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- /*
- * thinkpad_acpi.c - ThinkPad ACPI Extras
- *
- *
- * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
- * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
- #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
- #define TPACPI_VERSION "0.26"
- #define TPACPI_SYSFS_VERSION 0x030000
- /*
- * Changelog:
- * 2007-10-20 changelog trimmed down
- *
- * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
- * drivers/misc.
- *
- * 2006-11-22 0.13 new maintainer
- * changelog now lives in git commit history, and will
- * not be updated further in-file.
- *
- * 2005-03-17 0.11 support for 600e, 770x
- * thanks to Jamie Lentin <lentinj@dial.pipex.com>
- *
- * 2005-01-16 0.9 use MODULE_VERSION
- * thanks to Henrik Brix Andersen <brix@gentoo.org>
- * fix parameter passing on module loading
- * thanks to Rusty Russell <rusty@rustcorp.com.au>
- * thanks to Jim Radford <radford@blackbean.org>
- * 2004-11-08 0.8 fix init error case, don't return from a macro
- * thanks to Chris Wright <chrisw@osdl.org>
- */
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/types.h>
- #include <linux/string.h>
- #include <linux/list.h>
- #include <linux/mutex.h>
- #include <linux/sched.h>
- #include <linux/sched/signal.h>
- #include <linux/kthread.h>
- #include <linux/freezer.h>
- #include <linux/delay.h>
- #include <linux/slab.h>
- #include <linux/nvram.h>
- #include <linux/proc_fs.h>
- #include <linux/seq_file.h>
- #include <linux/sysfs.h>
- #include <linux/backlight.h>
- #include <linux/bitops.h>
- #include <linux/fb.h>
- #include <linux/platform_device.h>
- #include <linux/hwmon.h>
- #include <linux/hwmon-sysfs.h>
- #include <linux/input.h>
- #include <linux/leds.h>
- #include <linux/rfkill.h>
- #include <linux/dmi.h>
- #include <linux/jiffies.h>
- #include <linux/workqueue.h>
- #include <linux/acpi.h>
- #include <linux/pci.h>
- #include <linux/power_supply.h>
- #include <linux/thinkpad_acpi.h>
- #include <sound/core.h>
- #include <sound/control.h>
- #include <sound/initval.h>
- #include <linux/uaccess.h>
- #include <acpi/battery.h>
- #include <acpi/video.h>
- /* ThinkPad CMOS commands */
- #define TP_CMOS_VOLUME_DOWN 0
- #define TP_CMOS_VOLUME_UP 1
- #define TP_CMOS_VOLUME_MUTE 2
- #define TP_CMOS_BRIGHTNESS_UP 4
- #define TP_CMOS_BRIGHTNESS_DOWN 5
- #define TP_CMOS_THINKLIGHT_ON 12
- #define TP_CMOS_THINKLIGHT_OFF 13
- /* NVRAM Addresses */
- enum tp_nvram_addr {
- TP_NVRAM_ADDR_HK2 = 0x57,
- TP_NVRAM_ADDR_THINKLIGHT = 0x58,
- TP_NVRAM_ADDR_VIDEO = 0x59,
- TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
- TP_NVRAM_ADDR_MIXER = 0x60,
- };
- /* NVRAM bit masks */
- enum {
- TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
- TP_NVRAM_MASK_HKT_ZOOM = 0x20,
- TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
- TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
- TP_NVRAM_MASK_THINKLIGHT = 0x10,
- TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
- TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
- TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
- TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
- TP_NVRAM_MASK_MUTE = 0x40,
- TP_NVRAM_MASK_HKT_VOLUME = 0x80,
- TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
- TP_NVRAM_POS_LEVEL_VOLUME = 0,
- };
- /* Misc NVRAM-related */
- enum {
- TP_NVRAM_LEVEL_VOLUME_MAX = 14,
- };
- /* ACPI HIDs */
- #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
- #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
- #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268"
- #define TPACPI_ACPI_EC_HID "PNP0C09"
- /* Input IDs */
- #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
- #define TPACPI_HKEY_INPUT_VERSION 0x4101
- /* ACPI \WGSV commands */
- enum {
- TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
- TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
- TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
- TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
- };
- /* TP_ACPI_WGSV_GET_STATE bits */
- enum {
- TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
- TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
- TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
- TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
- TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
- TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
- TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
- TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
- TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
- TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
- };
- /* HKEY events */
- enum tpacpi_hkey_event_t {
- /* Hotkey-related */
- TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
- TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
- TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
- TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */
- TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
- TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
- TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
- /* Reasons for waking up from S3/S4 */
- TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
- TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
- TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
- TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
- TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
- TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
- /* Auto-sleep after eject request */
- TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
- TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
- /* Misc bay events */
- TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
- TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
- or port replicator */
- TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
- dock or port replicator */
- /* User-interface events */
- TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
- TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
- TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
- TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
- TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016):
- * enter/leave tablet mode
- */
- TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
- TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
- TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
- /* Key-related user-interface events */
- TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
- TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
- TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
- /* Thermal events */
- TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
- TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
- TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
- TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
- TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */
- TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set
- * command completed. Related to
- * AML DYTC */
- TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation
- * changed. Related to AML GMTS */
- /* AC-related events */
- TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
- /* Further user-interface events */
- TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */
- TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */
- /* Misc */
- TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
- };
- /****************************************************************************
- * Main driver
- */
- #define TPACPI_NAME "thinkpad"
- #define TPACPI_DESC "ThinkPad ACPI Extras"
- #define TPACPI_FILE TPACPI_NAME "_acpi"
- #define TPACPI_URL "http://ibm-acpi.sf.net/"
- #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
- #define TPACPI_PROC_DIR "ibm"
- #define TPACPI_ACPI_EVENT_PREFIX "ibm"
- #define TPACPI_DRVR_NAME TPACPI_FILE
- #define TPACPI_DRVR_SHORTNAME "tpacpi"
- #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
- #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
- #define TPACPI_WORKQUEUE_NAME "ktpacpid"
- #define TPACPI_MAX_ACPI_ARGS 3
- /* Debugging printk groups */
- #define TPACPI_DBG_ALL 0xffff
- #define TPACPI_DBG_DISCLOSETASK 0x8000
- #define TPACPI_DBG_INIT 0x0001
- #define TPACPI_DBG_EXIT 0x0002
- #define TPACPI_DBG_RFKILL 0x0004
- #define TPACPI_DBG_HKEY 0x0008
- #define TPACPI_DBG_FAN 0x0010
- #define TPACPI_DBG_BRGHT 0x0020
- #define TPACPI_DBG_MIXER 0x0040
- #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
- #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
- #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
- /****************************************************************************
- * Driver-wide structs and misc. variables
- */
- struct ibm_struct;
- struct tp_acpi_drv_struct {
- const struct acpi_device_id *hid;
- struct acpi_driver *driver;
- void (*notify) (struct ibm_struct *, u32);
- acpi_handle *handle;
- u32 type;
- struct acpi_device *device;
- };
- struct ibm_struct {
- char *name;
- int (*read) (struct seq_file *);
- int (*write) (char *);
- void (*exit) (void);
- void (*resume) (void);
- void (*suspend) (void);
- void (*shutdown) (void);
- struct list_head all_drivers;
- struct tp_acpi_drv_struct *acpi;
- struct {
- u8 acpi_driver_registered:1;
- u8 acpi_notify_installed:1;
- u8 proc_created:1;
- u8 init_called:1;
- u8 experimental:1;
- } flags;
- };
- struct ibm_init_struct {
- char param[32];
- int (*init) (struct ibm_init_struct *);
- umode_t base_procfs_mode;
- struct ibm_struct *data;
- };
- static struct {
- u32 bluetooth:1;
- u32 hotkey:1;
- u32 hotkey_mask:1;
- u32 hotkey_wlsw:1;
- enum {
- TP_HOTKEY_TABLET_NONE = 0,
- TP_HOTKEY_TABLET_USES_MHKG,
- TP_HOTKEY_TABLET_USES_GMMS,
- } hotkey_tablet;
- u32 kbdlight:1;
- u32 light:1;
- u32 light_status:1;
- u32 bright_acpimode:1;
- u32 bright_unkfw:1;
- u32 wan:1;
- u32 uwb:1;
- u32 fan_ctrl_status_undef:1;
- u32 second_fan:1;
- u32 beep_needs_two_args:1;
- u32 mixer_no_level_control:1;
- u32 battery_force_primary:1;
- u32 input_device_registered:1;
- u32 platform_drv_registered:1;
- u32 platform_drv_attrs_registered:1;
- u32 sensors_pdrv_registered:1;
- u32 sensors_pdrv_attrs_registered:1;
- u32 sensors_pdev_attrs_registered:1;
- u32 hotkey_poll_active:1;
- u32 has_adaptive_kbd:1;
- } tp_features;
- static struct {
- u16 hotkey_mask_ff:1;
- u16 volume_ctrl_forbidden:1;
- } tp_warned;
- struct thinkpad_id_data {
- unsigned int vendor; /* ThinkPad vendor:
- * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
- char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
- char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
- u32 bios_model; /* 1Y = 0x3159, 0 = unknown */
- u32 ec_model;
- u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */
- u16 ec_release;
- char *model_str; /* ThinkPad T43 */
- char *nummodel_str; /* 9384A9C for a 9384-A9C model */
- };
- static struct thinkpad_id_data thinkpad_id;
- static enum {
- TPACPI_LIFE_INIT = 0,
- TPACPI_LIFE_RUNNING,
- TPACPI_LIFE_EXITING,
- } tpacpi_lifecycle;
- static int experimental;
- static u32 dbg_level;
- static struct workqueue_struct *tpacpi_wq;
- enum led_status_t {
- TPACPI_LED_OFF = 0,
- TPACPI_LED_ON,
- TPACPI_LED_BLINK,
- };
- /* tpacpi LED class */
- struct tpacpi_led_classdev {
- struct led_classdev led_classdev;
- int led;
- };
- /* brightness level capabilities */
- static unsigned int bright_maxlvl; /* 0 = unknown */
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- static int dbg_wlswemul;
- static bool tpacpi_wlsw_emulstate;
- static int dbg_bluetoothemul;
- static bool tpacpi_bluetooth_emulstate;
- static int dbg_wwanemul;
- static bool tpacpi_wwan_emulstate;
- static int dbg_uwbemul;
- static bool tpacpi_uwb_emulstate;
- #endif
- /*************************************************************************
- * Debugging helpers
- */
- #define dbg_printk(a_dbg_level, format, arg...) \
- do { \
- if (dbg_level & (a_dbg_level)) \
- printk(KERN_DEBUG pr_fmt("%s: " format), \
- __func__, ##arg); \
- } while (0)
- #ifdef CONFIG_THINKPAD_ACPI_DEBUG
- #define vdbg_printk dbg_printk
- static const char *str_supported(int is_supported);
- #else
- static inline const char *str_supported(int is_supported) { return ""; }
- #define vdbg_printk(a_dbg_level, format, arg...) \
- do { if (0) no_printk(format, ##arg); } while (0)
- #endif
- static void tpacpi_log_usertask(const char * const what)
- {
- printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
- what, task_tgid_vnr(current));
- }
- #define tpacpi_disclose_usertask(what, format, arg...) \
- do { \
- if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
- (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
- printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
- what, task_tgid_vnr(current), ## arg); \
- } \
- } while (0)
- /*
- * Quirk handling helpers
- *
- * ThinkPad IDs and versions seen in the field so far are
- * two or three characters from the set [0-9A-Z], i.e. base 36.
- *
- * We use values well outside that range as specials.
- */
- #define TPACPI_MATCH_ANY 0xffffffffU
- #define TPACPI_MATCH_ANY_VERSION 0xffffU
- #define TPACPI_MATCH_UNKNOWN 0U
- /* TPID('1', 'Y') == 0x3159 */
- #define TPID(__c1, __c2) (((__c1) << 8) | (__c2))
- #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3))
- #define TPVER TPID
- #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_IBM, \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
- #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
- #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPID3(__id1, __id2, __id3), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = (__quirk) }
- #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPACPI_MATCH_ANY, \
- .ec = TPID(__id1, __id2), \
- .quirks = (__quirk) }
- struct tpacpi_quirk {
- unsigned int vendor;
- u32 bios;
- u32 ec;
- unsigned long quirks;
- };
- /**
- * tpacpi_check_quirks() - search BIOS/EC version on a list
- * @qlist: array of &struct tpacpi_quirk
- * @qlist_size: number of elements in @qlist
- *
- * Iterates over a quirks list until one is found that matches the
- * ThinkPad's vendor, BIOS and EC model.
- *
- * Returns 0 if nothing matches, otherwise returns the quirks field of
- * the matching &struct tpacpi_quirk entry.
- *
- * The match criteria is: vendor, ec and bios much match.
- */
- static unsigned long __init tpacpi_check_quirks(
- const struct tpacpi_quirk *qlist,
- unsigned int qlist_size)
- {
- while (qlist_size) {
- if ((qlist->vendor == thinkpad_id.vendor ||
- qlist->vendor == TPACPI_MATCH_ANY) &&
- (qlist->bios == thinkpad_id.bios_model ||
- qlist->bios == TPACPI_MATCH_ANY) &&
- (qlist->ec == thinkpad_id.ec_model ||
- qlist->ec == TPACPI_MATCH_ANY))
- return qlist->quirks;
- qlist_size--;
- qlist++;
- }
- return 0;
- }
- static inline bool __pure __init tpacpi_is_lenovo(void)
- {
- return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
- }
- static inline bool __pure __init tpacpi_is_ibm(void)
- {
- return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
- }
- /****************************************************************************
- ****************************************************************************
- *
- * ACPI Helpers and device model
- *
- ****************************************************************************
- ****************************************************************************/
- /*************************************************************************
- * ACPI basic handles
- */
- static acpi_handle root_handle;
- static acpi_handle ec_handle;
- #define TPACPI_HANDLE(object, parent, paths...) \
- static acpi_handle object##_handle; \
- static const acpi_handle * const object##_parent __initconst = \
- &parent##_handle; \
- static char *object##_paths[] __initdata = { paths }
- TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
- TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
- TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
- /* T4x, X31, X40 */
- "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
- "\\CMS", /* R40, R40e */
- ); /* all others */
- TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
- "^HKEY", /* R30, R31 */
- "HKEY", /* all others */
- ); /* 570 */
- /*************************************************************************
- * ACPI helpers
- */
- static int acpi_evalf(acpi_handle handle,
- int *res, char *method, char *fmt, ...)
- {
- char *fmt0 = fmt;
- struct acpi_object_list params;
- union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
- struct acpi_buffer result, *resultp;
- union acpi_object out_obj;
- acpi_status status;
- va_list ap;
- char res_type;
- int success;
- int quiet;
- if (!*fmt) {
- pr_err("acpi_evalf() called with empty format\n");
- return 0;
- }
- if (*fmt == 'q') {
- quiet = 1;
- fmt++;
- } else
- quiet = 0;
- res_type = *(fmt++);
- params.count = 0;
- params.pointer = &in_objs[0];
- va_start(ap, fmt);
- while (*fmt) {
- char c = *(fmt++);
- switch (c) {
- case 'd': /* int */
- in_objs[params.count].integer.value = va_arg(ap, int);
- in_objs[params.count++].type = ACPI_TYPE_INTEGER;
- break;
- /* add more types as needed */
- default:
- pr_err("acpi_evalf() called with invalid format character '%c'\n",
- c);
- va_end(ap);
- return 0;
- }
- }
- va_end(ap);
- if (res_type != 'v') {
- result.length = sizeof(out_obj);
- result.pointer = &out_obj;
- resultp = &result;
- } else
- resultp = NULL;
- status = acpi_evaluate_object(handle, method, ¶ms, resultp);
- switch (res_type) {
- case 'd': /* int */
- success = (status == AE_OK &&
- out_obj.type == ACPI_TYPE_INTEGER);
- if (success && res)
- *res = out_obj.integer.value;
- break;
- case 'v': /* void */
- success = status == AE_OK;
- break;
- /* add more types as needed */
- default:
- pr_err("acpi_evalf() called with invalid format character '%c'\n",
- res_type);
- return 0;
- }
- if (!success && !quiet)
- pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
- method, fmt0, acpi_format_exception(status));
- return success;
- }
- static int acpi_ec_read(int i, u8 *p)
- {
- int v;
- if (ecrd_handle) {
- if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
- return 0;
- *p = v;
- } else {
- if (ec_read(i, p) < 0)
- return 0;
- }
- return 1;
- }
- static int acpi_ec_write(int i, u8 v)
- {
- if (ecwr_handle) {
- if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
- return 0;
- } else {
- if (ec_write(i, v) < 0)
- return 0;
- }
- return 1;
- }
- static int issue_thinkpad_cmos_command(int cmos_cmd)
- {
- if (!cmos_handle)
- return -ENXIO;
- if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
- return -EIO;
- return 0;
- }
- /*************************************************************************
- * ACPI device model
- */
- #define TPACPI_ACPIHANDLE_INIT(object) \
- drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
- object##_paths, ARRAY_SIZE(object##_paths))
- static void __init drv_acpi_handle_init(const char *name,
- acpi_handle *handle, const acpi_handle parent,
- char **paths, const int num_paths)
- {
- int i;
- acpi_status status;
- vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
- name);
- for (i = 0; i < num_paths; i++) {
- status = acpi_get_handle(parent, paths[i], handle);
- if (ACPI_SUCCESS(status)) {
- dbg_printk(TPACPI_DBG_INIT,
- "Found ACPI handle %s for %s\n",
- paths[i], name);
- return;
- }
- }
- vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
- name);
- *handle = NULL;
- }
- static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
- u32 level, void *context, void **return_value)
- {
- struct acpi_device *dev;
- if (!strcmp(context, "video")) {
- if (acpi_bus_get_device(handle, &dev))
- return AE_OK;
- if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
- return AE_OK;
- }
- *(acpi_handle *)return_value = handle;
- return AE_CTRL_TERMINATE;
- }
- static void __init tpacpi_acpi_handle_locate(const char *name,
- const char *hid,
- acpi_handle *handle)
- {
- acpi_status status;
- acpi_handle device_found;
- BUG_ON(!name || !handle);
- vdbg_printk(TPACPI_DBG_INIT,
- "trying to locate ACPI handle for %s, using HID %s\n",
- name, hid ? hid : "NULL");
- memset(&device_found, 0, sizeof(device_found));
- status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
- (void *)name, &device_found);
- *handle = NULL;
- if (ACPI_SUCCESS(status)) {
- *handle = device_found;
- dbg_printk(TPACPI_DBG_INIT,
- "Found ACPI handle for %s\n", name);
- } else {
- vdbg_printk(TPACPI_DBG_INIT,
- "Could not locate an ACPI handle for %s: %s\n",
- name, acpi_format_exception(status));
- }
- }
- static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
- {
- struct ibm_struct *ibm = data;
- if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
- return;
- if (!ibm || !ibm->acpi || !ibm->acpi->notify)
- return;
- ibm->acpi->notify(ibm, event);
- }
- static int __init setup_acpi_notify(struct ibm_struct *ibm)
- {
- acpi_status status;
- int rc;
- BUG_ON(!ibm->acpi);
- if (!*ibm->acpi->handle)
- return 0;
- vdbg_printk(TPACPI_DBG_INIT,
- "setting up ACPI notify for %s\n", ibm->name);
- rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
- if (rc < 0) {
- pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
- return -ENODEV;
- }
- ibm->acpi->device->driver_data = ibm;
- sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
- TPACPI_ACPI_EVENT_PREFIX,
- ibm->name);
- status = acpi_install_notify_handler(*ibm->acpi->handle,
- ibm->acpi->type, dispatch_acpi_notify, ibm);
- if (ACPI_FAILURE(status)) {
- if (status == AE_ALREADY_EXISTS) {
- pr_notice("another device driver is already handling %s events\n",
- ibm->name);
- } else {
- pr_err("acpi_install_notify_handler(%s) failed: %s\n",
- ibm->name, acpi_format_exception(status));
- }
- return -ENODEV;
- }
- ibm->flags.acpi_notify_installed = 1;
- return 0;
- }
- static int __init tpacpi_device_add(struct acpi_device *device)
- {
- return 0;
- }
- static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
- {
- int rc;
- dbg_printk(TPACPI_DBG_INIT,
- "registering %s as an ACPI driver\n", ibm->name);
- BUG_ON(!ibm->acpi);
- ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
- if (!ibm->acpi->driver) {
- pr_err("failed to allocate memory for ibm->acpi->driver\n");
- return -ENOMEM;
- }
- sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
- ibm->acpi->driver->ids = ibm->acpi->hid;
- ibm->acpi->driver->ops.add = &tpacpi_device_add;
- rc = acpi_bus_register_driver(ibm->acpi->driver);
- if (rc < 0) {
- pr_err("acpi_bus_register_driver(%s) failed: %d\n",
- ibm->name, rc);
- kfree(ibm->acpi->driver);
- ibm->acpi->driver = NULL;
- } else if (!rc)
- ibm->flags.acpi_driver_registered = 1;
- return rc;
- }
- /****************************************************************************
- ****************************************************************************
- *
- * Procfs Helpers
- *
- ****************************************************************************
- ****************************************************************************/
- static int dispatch_proc_show(struct seq_file *m, void *v)
- {
- struct ibm_struct *ibm = m->private;
- if (!ibm || !ibm->read)
- return -EINVAL;
- return ibm->read(m);
- }
- static int dispatch_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, dispatch_proc_show, PDE_DATA(inode));
- }
- static ssize_t dispatch_proc_write(struct file *file,
- const char __user *userbuf,
- size_t count, loff_t *pos)
- {
- struct ibm_struct *ibm = PDE_DATA(file_inode(file));
- char *kernbuf;
- int ret;
- if (!ibm || !ibm->write)
- return -EINVAL;
- if (count > PAGE_SIZE - 2)
- return -EINVAL;
- kernbuf = kmalloc(count + 2, GFP_KERNEL);
- if (!kernbuf)
- return -ENOMEM;
- if (copy_from_user(kernbuf, userbuf, count)) {
- kfree(kernbuf);
- return -EFAULT;
- }
- kernbuf[count] = 0;
- strcat(kernbuf, ",");
- ret = ibm->write(kernbuf);
- if (ret == 0)
- ret = count;
- kfree(kernbuf);
- return ret;
- }
- static const struct file_operations dispatch_proc_fops = {
- .owner = THIS_MODULE,
- .open = dispatch_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = dispatch_proc_write,
- };
- static char *next_cmd(char **cmds)
- {
- char *start = *cmds;
- char *end;
- while ((end = strchr(start, ',')) && end == start)
- start = end + 1;
- if (!end)
- return NULL;
- *end = 0;
- *cmds = end + 1;
- return start;
- }
- /****************************************************************************
- ****************************************************************************
- *
- * Device model: input, hwmon and platform
- *
- ****************************************************************************
- ****************************************************************************/
- static struct platform_device *tpacpi_pdev;
- static struct platform_device *tpacpi_sensors_pdev;
- static struct device *tpacpi_hwmon;
- static struct input_dev *tpacpi_inputdev;
- static struct mutex tpacpi_inputdev_send_mutex;
- static LIST_HEAD(tpacpi_all_drivers);
- #ifdef CONFIG_PM_SLEEP
- static int tpacpi_suspend_handler(struct device *dev)
- {
- struct ibm_struct *ibm, *itmp;
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->suspend)
- (ibm->suspend)();
- }
- return 0;
- }
- static int tpacpi_resume_handler(struct device *dev)
- {
- struct ibm_struct *ibm, *itmp;
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->resume)
- (ibm->resume)();
- }
- return 0;
- }
- #endif
- static SIMPLE_DEV_PM_OPS(tpacpi_pm,
- tpacpi_suspend_handler, tpacpi_resume_handler);
- static void tpacpi_shutdown_handler(struct platform_device *pdev)
- {
- struct ibm_struct *ibm, *itmp;
- list_for_each_entry_safe(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- if (ibm->shutdown)
- (ibm->shutdown)();
- }
- }
- static struct platform_driver tpacpi_pdriver = {
- .driver = {
- .name = TPACPI_DRVR_NAME,
- .pm = &tpacpi_pm,
- },
- .shutdown = tpacpi_shutdown_handler,
- };
- static struct platform_driver tpacpi_hwmon_pdriver = {
- .driver = {
- .name = TPACPI_HWMON_DRVR_NAME,
- },
- };
- /*************************************************************************
- * sysfs support helpers
- */
- struct attribute_set {
- unsigned int members, max_members;
- struct attribute_group group;
- };
- struct attribute_set_obj {
- struct attribute_set s;
- struct attribute *a;
- } __attribute__((packed));
- static struct attribute_set *create_attr_set(unsigned int max_members,
- const char *name)
- {
- struct attribute_set_obj *sobj;
- if (max_members == 0)
- return NULL;
- /* Allocates space for implicit NULL at the end too */
- sobj = kzalloc(sizeof(struct attribute_set_obj) +
- max_members * sizeof(struct attribute *),
- GFP_KERNEL);
- if (!sobj)
- return NULL;
- sobj->s.max_members = max_members;
- sobj->s.group.attrs = &sobj->a;
- sobj->s.group.name = name;
- return &sobj->s;
- }
- #define destroy_attr_set(_set) \
- kfree(_set);
- /* not multi-threaded safe, use it in a single thread per set */
- static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
- {
- if (!s || !attr)
- return -EINVAL;
- if (s->members >= s->max_members)
- return -ENOMEM;
- s->group.attrs[s->members] = attr;
- s->members++;
- return 0;
- }
- static int add_many_to_attr_set(struct attribute_set *s,
- struct attribute **attr,
- unsigned int count)
- {
- int i, res;
- for (i = 0; i < count; i++) {
- res = add_to_attr_set(s, attr[i]);
- if (res)
- return res;
- }
- return 0;
- }
- static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
- {
- sysfs_remove_group(kobj, &s->group);
- destroy_attr_set(s);
- }
- #define register_attr_set_with_sysfs(_attr_set, _kobj) \
- sysfs_create_group(_kobj, &_attr_set->group)
- static int parse_strtoul(const char *buf,
- unsigned long max, unsigned long *value)
- {
- char *endp;
- *value = simple_strtoul(skip_spaces(buf), &endp, 0);
- endp = skip_spaces(endp);
- if (*endp || *value > max)
- return -EINVAL;
- return 0;
- }
- static void tpacpi_disable_brightness_delay(void)
- {
- if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
- pr_notice("ACPI backlight control delay disabled\n");
- }
- static void printk_deprecated_attribute(const char * const what,
- const char * const details)
- {
- tpacpi_log_usertask("deprecated sysfs attribute");
- pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n",
- what, details);
- }
- /*************************************************************************
- * rfkill and radio control support helpers
- */
- /*
- * ThinkPad-ACPI firmware handling model:
- *
- * WLSW (master wireless switch) is event-driven, and is common to all
- * firmware-controlled radios. It cannot be controlled, just monitored,
- * as expected. It overrides all radio state in firmware
- *
- * The kernel, a masked-off hotkey, and WLSW can change the radio state
- * (TODO: verify how WLSW interacts with the returned radio state).
- *
- * The only time there are shadow radio state changes, is when
- * masked-off hotkeys are used.
- */
- /*
- * Internal driver API for radio state:
- *
- * int: < 0 = error, otherwise enum tpacpi_rfkill_state
- * bool: true means radio blocked (off)
- */
- enum tpacpi_rfkill_state {
- TPACPI_RFK_RADIO_OFF = 0,
- TPACPI_RFK_RADIO_ON
- };
- /* rfkill switches */
- enum tpacpi_rfk_id {
- TPACPI_RFK_BLUETOOTH_SW_ID = 0,
- TPACPI_RFK_WWAN_SW_ID,
- TPACPI_RFK_UWB_SW_ID,
- TPACPI_RFK_SW_MAX
- };
- static const char *tpacpi_rfkill_names[] = {
- [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
- [TPACPI_RFK_WWAN_SW_ID] = "wwan",
- [TPACPI_RFK_UWB_SW_ID] = "uwb",
- [TPACPI_RFK_SW_MAX] = NULL
- };
- /* ThinkPad-ACPI rfkill subdriver */
- struct tpacpi_rfk {
- struct rfkill *rfkill;
- enum tpacpi_rfk_id id;
- const struct tpacpi_rfk_ops *ops;
- };
- struct tpacpi_rfk_ops {
- /* firmware interface */
- int (*get_status)(void);
- int (*set_status)(const enum tpacpi_rfkill_state);
- };
- static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
- /* Query FW and update rfkill sw state for a given rfkill switch */
- static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
- {
- int status;
- if (!tp_rfk)
- return -ENODEV;
- status = (tp_rfk->ops->get_status)();
- if (status < 0)
- return status;
- rfkill_set_sw_state(tp_rfk->rfkill,
- (status == TPACPI_RFK_RADIO_OFF));
- return status;
- }
- /* Query FW and update rfkill sw state for all rfkill switches */
- static void tpacpi_rfk_update_swstate_all(void)
- {
- unsigned int i;
- for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
- tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
- }
- /*
- * Sync the HW-blocking state of all rfkill switches,
- * do notice it causes the rfkill core to schedule uevents
- */
- static void tpacpi_rfk_update_hwblock_state(bool blocked)
- {
- unsigned int i;
- struct tpacpi_rfk *tp_rfk;
- for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
- tp_rfk = tpacpi_rfkill_switches[i];
- if (tp_rfk) {
- if (rfkill_set_hw_state(tp_rfk->rfkill,
- blocked)) {
- /* ignore -- we track sw block */
- }
- }
- }
- }
- /* Call to get the WLSW state from the firmware */
- static int hotkey_get_wlsw(void);
- /* Call to query WLSW state and update all rfkill switches */
- static bool tpacpi_rfk_check_hwblock_state(void)
- {
- int res = hotkey_get_wlsw();
- int hw_blocked;
- /* When unknown or unsupported, we have to assume it is unblocked */
- if (res < 0)
- return false;
- hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
- tpacpi_rfk_update_hwblock_state(hw_blocked);
- return hw_blocked;
- }
- static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
- {
- struct tpacpi_rfk *tp_rfk = data;
- int res;
- dbg_printk(TPACPI_DBG_RFKILL,
- "request to change radio state to %s\n",
- blocked ? "blocked" : "unblocked");
- /* try to set radio state */
- res = (tp_rfk->ops->set_status)(blocked ?
- TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
- /* and update the rfkill core with whatever the FW really did */
- tpacpi_rfk_update_swstate(tp_rfk);
- return (res < 0) ? res : 0;
- }
- static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
- .set_block = tpacpi_rfk_hook_set_block,
- };
- static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
- const struct tpacpi_rfk_ops *tp_rfkops,
- const enum rfkill_type rfktype,
- const char *name,
- const bool set_default)
- {
- struct tpacpi_rfk *atp_rfk;
- int res;
- bool sw_state = false;
- bool hw_state;
- int sw_status;
- BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
- atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
- if (atp_rfk)
- atp_rfk->rfkill = rfkill_alloc(name,
- &tpacpi_pdev->dev,
- rfktype,
- &tpacpi_rfk_rfkill_ops,
- atp_rfk);
- if (!atp_rfk || !atp_rfk->rfkill) {
- pr_err("failed to allocate memory for rfkill class\n");
- kfree(atp_rfk);
- return -ENOMEM;
- }
- atp_rfk->id = id;
- atp_rfk->ops = tp_rfkops;
- sw_status = (tp_rfkops->get_status)();
- if (sw_status < 0) {
- pr_err("failed to read initial state for %s, error %d\n",
- name, sw_status);
- } else {
- sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
- if (set_default) {
- /* try to keep the initial state, since we ask the
- * firmware to preserve it across S5 in NVRAM */
- rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
- }
- }
- hw_state = tpacpi_rfk_check_hwblock_state();
- rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
- res = rfkill_register(atp_rfk->rfkill);
- if (res < 0) {
- pr_err("failed to register %s rfkill switch: %d\n", name, res);
- rfkill_destroy(atp_rfk->rfkill);
- kfree(atp_rfk);
- return res;
- }
- tpacpi_rfkill_switches[id] = atp_rfk;
- pr_info("rfkill switch %s: radio is %sblocked\n",
- name, (sw_state || hw_state) ? "" : "un");
- return 0;
- }
- static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
- {
- struct tpacpi_rfk *tp_rfk;
- BUG_ON(id >= TPACPI_RFK_SW_MAX);
- tp_rfk = tpacpi_rfkill_switches[id];
- if (tp_rfk) {
- rfkill_unregister(tp_rfk->rfkill);
- rfkill_destroy(tp_rfk->rfkill);
- tpacpi_rfkill_switches[id] = NULL;
- kfree(tp_rfk);
- }
- }
- static void printk_deprecated_rfkill_attribute(const char * const what)
- {
- printk_deprecated_attribute(what,
- "Please switch to generic rfkill before year 2010");
- }
- /* sysfs <radio> enable ------------------------------------------------ */
- static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
- struct device_attribute *attr,
- char *buf)
- {
- int status;
- printk_deprecated_rfkill_attribute(attr->attr.name);
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state()) {
- status = TPACPI_RFK_RADIO_OFF;
- } else {
- status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
- if (status < 0)
- return status;
- }
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
- }
- static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- int res;
- printk_deprecated_rfkill_attribute(attr->attr.name);
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state() && !!t)
- return -EPERM;
- res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
- tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
- return (res < 0) ? res : count;
- }
- /* procfs -------------------------------------------------------------- */
- static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
- {
- if (id >= TPACPI_RFK_SW_MAX)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- int status;
- /* This is in the ABI... */
- if (tpacpi_rfk_check_hwblock_state()) {
- status = TPACPI_RFK_RADIO_OFF;
- } else {
- status = tpacpi_rfk_update_swstate(
- tpacpi_rfkill_switches[id]);
- if (status < 0)
- return status;
- }
- seq_printf(m, "status:\t\t%s\n",
- (status == TPACPI_RFK_RADIO_ON) ?
- "enabled" : "disabled");
- seq_printf(m, "commands:\tenable, disable\n");
- }
- return 0;
- }
- static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
- {
- char *cmd;
- int status = -1;
- int res = 0;
- if (id >= TPACPI_RFK_SW_MAX)
- return -ENODEV;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "enable") == 0)
- status = TPACPI_RFK_RADIO_ON;
- else if (strlencmp(cmd, "disable") == 0)
- status = TPACPI_RFK_RADIO_OFF;
- else
- return -EINVAL;
- }
- if (status != -1) {
- tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
- (status == TPACPI_RFK_RADIO_ON) ?
- "enable" : "disable",
- tpacpi_rfkill_names[id]);
- res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
- tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
- }
- return res;
- }
- /*************************************************************************
- * thinkpad-acpi driver attributes
- */
- /* interface_version --------------------------------------------------- */
- static ssize_t interface_version_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
- }
- static DRIVER_ATTR_RO(interface_version);
- /* debug_level --------------------------------------------------------- */
- static ssize_t debug_level_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
- }
- static ssize_t debug_level_store(struct device_driver *drv, const char *buf,
- size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 0xffff, &t))
- return -EINVAL;
- dbg_level = t;
- return count;
- }
- static DRIVER_ATTR_RW(debug_level);
- /* version ------------------------------------------------------------- */
- static ssize_t version_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%s v%s\n",
- TPACPI_DESC, TPACPI_VERSION);
- }
- static DRIVER_ATTR_RO(version);
- /* --------------------------------------------------------------------- */
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- /* wlsw_emulstate ------------------------------------------------------ */
- static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
- }
- static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- if (tpacpi_wlsw_emulstate != !!t) {
- tpacpi_wlsw_emulstate = !!t;
- tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
- }
- return count;
- }
- static DRIVER_ATTR_RW(wlsw_emulstate);
- /* bluetooth_emulstate ------------------------------------------------- */
- static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
- }
- static ssize_t bluetooth_emulstate_store(struct device_driver *drv,
- const char *buf, size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- tpacpi_bluetooth_emulstate = !!t;
- return count;
- }
- static DRIVER_ATTR_RW(bluetooth_emulstate);
- /* wwan_emulstate ------------------------------------------------- */
- static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
- }
- static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- tpacpi_wwan_emulstate = !!t;
- return count;
- }
- static DRIVER_ATTR_RW(wwan_emulstate);
- /* uwb_emulstate ------------------------------------------------- */
- static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
- }
- static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf,
- size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- tpacpi_uwb_emulstate = !!t;
- return count;
- }
- static DRIVER_ATTR_RW(uwb_emulstate);
- #endif
- /* --------------------------------------------------------------------- */
- static struct driver_attribute *tpacpi_driver_attributes[] = {
- &driver_attr_debug_level, &driver_attr_version,
- &driver_attr_interface_version,
- };
- static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
- {
- int i, res;
- i = 0;
- res = 0;
- while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
- res = driver_create_file(drv, tpacpi_driver_attributes[i]);
- i++;
- }
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (!res && dbg_wlswemul)
- res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
- if (!res && dbg_bluetoothemul)
- res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
- if (!res && dbg_wwanemul)
- res = driver_create_file(drv, &driver_attr_wwan_emulstate);
- if (!res && dbg_uwbemul)
- res = driver_create_file(drv, &driver_attr_uwb_emulstate);
- #endif
- return res;
- }
- static void tpacpi_remove_driver_attributes(struct device_driver *drv)
- {
- int i;
- for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
- driver_remove_file(drv, tpacpi_driver_attributes[i]);
- #ifdef THINKPAD_ACPI_DEBUGFACILITIES
- driver_remove_file(drv, &driver_attr_wlsw_emulstate);
- driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
- driver_remove_file(drv, &driver_attr_wwan_emulstate);
- driver_remove_file(drv, &driver_attr_uwb_emulstate);
- #endif
- }
- /*************************************************************************
- * Firmware Data
- */
- /*
- * Table of recommended minimum BIOS versions
- *
- * Reasons for listing:
- * 1. Stable BIOS, listed because the unknown amount of
- * bugs and bad ACPI behaviour on older versions
- *
- * 2. BIOS or EC fw with known bugs that trigger on Linux
- *
- * 3. BIOS with known reduced functionality in older versions
- *
- * We recommend the latest BIOS and EC version.
- * We only support the latest BIOS and EC fw version as a rule.
- *
- * Sources: IBM ThinkPad Public Web Documents (update changelogs),
- * Information from users in ThinkWiki
- *
- * WARNING: we use this table also to detect that the machine is
- * a ThinkPad in some cases, so don't remove entries lightly.
- */
- #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
- { .vendor = (__v), \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = TPACPI_MATCH_ANY_VERSION << 16 \
- | TPVER(__bv1, __bv2) }
- #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
- __eid, __ev1, __ev2) \
- { .vendor = (__v), \
- .bios = TPID(__bid1, __bid2), \
- .ec = __eid, \
- .quirks = TPVER(__ev1, __ev2) << 16 \
- | TPVER(__bv1, __bv2) }
- #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
- TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
- /* Outdated IBM BIOSes often lack the EC id string */
- #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
- __bv1, __bv2, TPID(__id1, __id2), \
- __ev1, __ev2), \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
- __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
- __ev1, __ev2)
- /* Outdated IBM BIOSes often lack the EC id string */
- #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
- __eid1, __eid2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
- __bv1, __bv2, TPID(__eid1, __eid2), \
- __ev1, __ev2), \
- TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
- __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
- __ev1, __ev2)
- #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
- TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
- #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
- __bv1, __bv2, TPID(__id1, __id2), \
- __ev1, __ev2)
- #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
- __eid1, __eid2, __ev1, __ev2) \
- TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
- __bv1, __bv2, TPID(__eid1, __eid2), \
- __ev1, __ev2)
- static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
- /* Numeric models ------------------ */
- /* FW MODEL BIOS VERS */
- TPV_QI0('I', 'M', '6', '5'), /* 570 */
- TPV_QI0('I', 'U', '2', '6'), /* 570E */
- TPV_QI0('I', 'B', '5', '4'), /* 600 */
- TPV_QI0('I', 'H', '4', '7'), /* 600E */
- TPV_QI0('I', 'N', '3', '6'), /* 600E */
- TPV_QI0('I', 'T', '5', '5'), /* 600X */
- TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
- TPV_QI0('I', 'I', '4', '2'), /* 770X */
- TPV_QI0('I', 'O', '2', '3'), /* 770Z */
- /* A-series ------------------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('I', 'W', '5', '9'), /* A20m */
- TPV_QI0('I', 'V', '6', '9'), /* A20p */
- TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
- TPV_QI0('K', 'U', '3', '6'), /* A21e */
- TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
- TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
- TPV_QI0('1', 'B', '1', '7'), /* A22e */
- TPV_QI0('1', '3', '2', '0'), /* A22m */
- TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
- TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
- TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
- /* G-series ------------------------- */
- /* FW MODEL BIOS VERS */
- TPV_QI0('1', 'T', 'A', '6'), /* G40 */
- TPV_QI0('1', 'X', '5', '7'), /* G41 */
- /* R-series, T-series --------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('1', 'C', 'F', '0'), /* R30 */
- TPV_QI0('1', 'F', 'F', '1'), /* R31 */
- TPV_QI0('1', 'M', '9', '7'), /* R32 */
- TPV_QI0('1', 'O', '6', '1'), /* R40 */
- TPV_QI0('1', 'P', '6', '5'), /* R40 */
- TPV_QI0('1', 'S', '7', '0'), /* R40e */
- TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
- T40/p, T41/p, T42/p (1) */
- TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
- TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
- TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
- TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
- TPV_QI0('I', 'Y', '6', '1'), /* T20 */
- TPV_QI0('K', 'Z', '3', '4'), /* T21 */
- TPV_QI0('1', '6', '3', '2'), /* T22 */
- TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
- TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
- TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
- TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
- TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
- TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
- /* BIOS FW BIOS VERS EC FW EC VERS */
- TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
- TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
- /* X-series ------------------------- */
- /* FW MODEL BIOS VERS EC VERS */
- TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
- TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
- TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
- TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
- TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
- TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
- TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
- TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
- TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
- /* (0) - older versions lack DMI EC fw string and functionality */
- /* (1) - older versions known to lack functionality */
- };
- #undef TPV_QL1
- #undef TPV_QL0
- #undef TPV_QI2
- #undef TPV_QI1
- #undef TPV_QI0
- #undef TPV_Q_X
- #undef TPV_Q
- static void __init tpacpi_check_outdated_fw(void)
- {
- unsigned long fwvers;
- u16 ec_version, bios_version;
- fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
- ARRAY_SIZE(tpacpi_bios_version_qtable));
- if (!fwvers)
- return;
- bios_version = fwvers & 0xffffU;
- ec_version = (fwvers >> 16) & 0xffffU;
- /* note that unknown versions are set to 0x0000 and we use that */
- if ((bios_version > thinkpad_id.bios_release) ||
- (ec_version > thinkpad_id.ec_release &&
- ec_version != TPACPI_MATCH_ANY_VERSION)) {
- /*
- * The changelogs would let us track down the exact
- * reason, but it is just too much of a pain to track
- * it. We only list BIOSes that are either really
- * broken, or really stable to begin with, so it is
- * best if the user upgrades the firmware anyway.
- */
- pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
- pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n");
- }
- }
- static bool __init tpacpi_is_fw_known(void)
- {
- return tpacpi_check_quirks(tpacpi_bios_version_qtable,
- ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
- }
- /****************************************************************************
- ****************************************************************************
- *
- * Subdrivers
- *
- ****************************************************************************
- ****************************************************************************/
- /*************************************************************************
- * thinkpad-acpi metadata subdriver
- */
- static int thinkpad_acpi_driver_read(struct seq_file *m)
- {
- seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
- seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
- return 0;
- }
- static struct ibm_struct thinkpad_acpi_driver_data = {
- .name = "driver",
- .read = thinkpad_acpi_driver_read,
- };
- /*************************************************************************
- * Hotkey subdriver
- */
- /*
- * ThinkPad firmware event model
- *
- * The ThinkPad firmware has two main event interfaces: normal ACPI
- * notifications (which follow the ACPI standard), and a private event
- * interface.
- *
- * The private event interface also issues events for the hotkeys. As
- * the driver gained features, the event handling code ended up being
- * built around the hotkey subdriver. This will need to be refactored
- * to a more formal event API eventually.
- *
- * Some "hotkeys" are actually supposed to be used as event reports,
- * such as "brightness has changed", "volume has changed", depending on
- * the ThinkPad model and how the firmware is operating.
- *
- * Unlike other classes, hotkey-class events have mask/unmask control on
- * non-ancient firmware. However, how it behaves changes a lot with the
- * firmware model and version.
- */
- enum { /* hot key scan codes (derived from ACPI DSDT) */
- TP_ACPI_HOTKEYSCAN_FNF1 = 0,
- TP_ACPI_HOTKEYSCAN_FNF2,
- TP_ACPI_HOTKEYSCAN_FNF3,
- TP_ACPI_HOTKEYSCAN_FNF4,
- TP_ACPI_HOTKEYSCAN_FNF5,
- TP_ACPI_HOTKEYSCAN_FNF6,
- TP_ACPI_HOTKEYSCAN_FNF7,
- TP_ACPI_HOTKEYSCAN_FNF8,
- TP_ACPI_HOTKEYSCAN_FNF9,
- TP_ACPI_HOTKEYSCAN_FNF10,
- TP_ACPI_HOTKEYSCAN_FNF11,
- TP_ACPI_HOTKEYSCAN_FNF12,
- TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
- TP_ACPI_HOTKEYSCAN_FNINSERT,
- TP_ACPI_HOTKEYSCAN_FNDELETE,
- TP_ACPI_HOTKEYSCAN_FNHOME,
- TP_ACPI_HOTKEYSCAN_FNEND,
- TP_ACPI_HOTKEYSCAN_FNPAGEUP,
- TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
- TP_ACPI_HOTKEYSCAN_FNSPACE,
- TP_ACPI_HOTKEYSCAN_VOLUMEUP,
- TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
- TP_ACPI_HOTKEYSCAN_MUTE,
- TP_ACPI_HOTKEYSCAN_THINKPAD,
- TP_ACPI_HOTKEYSCAN_UNK1,
- TP_ACPI_HOTKEYSCAN_UNK2,
- TP_ACPI_HOTKEYSCAN_UNK3,
- TP_ACPI_HOTKEYSCAN_UNK4,
- TP_ACPI_HOTKEYSCAN_UNK5,
- TP_ACPI_HOTKEYSCAN_UNK6,
- TP_ACPI_HOTKEYSCAN_UNK7,
- TP_ACPI_HOTKEYSCAN_UNK8,
- /* Adaptive keyboard keycodes */
- TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
- TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START,
- TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
- TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
- TP_ACPI_HOTKEYSCAN_CLOUD,
- TP_ACPI_HOTKEYSCAN_UNK9,
- TP_ACPI_HOTKEYSCAN_VOICE,
- TP_ACPI_HOTKEYSCAN_UNK10,
- TP_ACPI_HOTKEYSCAN_GESTURES,
- TP_ACPI_HOTKEYSCAN_UNK11,
- TP_ACPI_HOTKEYSCAN_UNK12,
- TP_ACPI_HOTKEYSCAN_UNK13,
- TP_ACPI_HOTKEYSCAN_CONFIG,
- TP_ACPI_HOTKEYSCAN_NEW_TAB,
- TP_ACPI_HOTKEYSCAN_RELOAD,
- TP_ACPI_HOTKEYSCAN_BACK,
- TP_ACPI_HOTKEYSCAN_MIC_DOWN,
- TP_ACPI_HOTKEYSCAN_MIC_UP,
- TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
- TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
- TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
- /* Lenovo extended keymap, starting at 0x1300 */
- TP_ACPI_HOTKEYSCAN_EXTENDED_START,
- /* first new observed key (star, favorites) is 0x1311 */
- TP_ACPI_HOTKEYSCAN_STAR = 69,
- TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2,
- TP_ACPI_HOTKEYSCAN_CALCULATOR,
- TP_ACPI_HOTKEYSCAN_BLUETOOTH,
- TP_ACPI_HOTKEYSCAN_KEYBOARD,
- /* Hotkey keymap size */
- TPACPI_HOTKEY_MAP_LEN
- };
- enum { /* Keys/events available through NVRAM polling */
- TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
- TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
- };
- enum { /* Positions of some of the keys in hotkey masks */
- TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
- TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
- TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
- TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
- TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
- TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
- TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
- TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
- TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
- TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
- TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
- };
- enum { /* NVRAM to ACPI HKEY group map */
- TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
- TP_ACPI_HKEY_ZOOM_MASK |
- TP_ACPI_HKEY_DISPSWTCH_MASK |
- TP_ACPI_HKEY_HIBERNATE_MASK,
- TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
- TP_ACPI_HKEY_BRGHTDWN_MASK,
- TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
- TP_ACPI_HKEY_VOLDWN_MASK |
- TP_ACPI_HKEY_MUTE_MASK,
- };
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- struct tp_nvram_state {
- u16 thinkpad_toggle:1;
- u16 zoom_toggle:1;
- u16 display_toggle:1;
- u16 thinklight_toggle:1;
- u16 hibernate_toggle:1;
- u16 displayexp_toggle:1;
- u16 display_state:1;
- u16 brightness_toggle:1;
- u16 volume_toggle:1;
- u16 mute:1;
- u8 brightness_level;
- u8 volume_level;
- };
- /* kthread for the hotkey poller */
- static struct task_struct *tpacpi_hotkey_task;
- /*
- * Acquire mutex to write poller control variables as an
- * atomic block.
- *
- * Increment hotkey_config_change when changing them if you
- * want the kthread to forget old state.
- *
- * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
- */
- static struct mutex hotkey_thread_data_mutex;
- static unsigned int hotkey_config_change;
- /*
- * hotkey poller control variables
- *
- * Must be atomic or readers will also need to acquire mutex
- *
- * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
- * should be used only when the changes need to be taken as
- * a block, OR when one needs to force the kthread to forget
- * old state.
- */
- static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
- static unsigned int hotkey_poll_freq = 10; /* Hz */
- #define HOTKEY_CONFIG_CRITICAL_START \
- do { \
- mutex_lock(&hotkey_thread_data_mutex); \
- hotkey_config_change++; \
- } while (0);
- #define HOTKEY_CONFIG_CRITICAL_END \
- mutex_unlock(&hotkey_thread_data_mutex);
- #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
- #define hotkey_source_mask 0U
- #define HOTKEY_CONFIG_CRITICAL_START
- #define HOTKEY_CONFIG_CRITICAL_END
- #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
- static struct mutex hotkey_mutex;
- static enum { /* Reasons for waking up */
- TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
- TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
- TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
- } hotkey_wakeup_reason;
- static int hotkey_autosleep_ack;
- static u32 hotkey_orig_mask; /* events the BIOS had enabled */
- static u32 hotkey_all_mask; /* all events supported in fw */
- static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
- static u32 hotkey_reserved_mask; /* events better left disabled */
- static u32 hotkey_driver_mask; /* events needed by the driver */
- static u32 hotkey_user_mask; /* events visible to userspace */
- static u32 hotkey_acpi_mask; /* events enabled in firmware */
- static u16 *hotkey_keycode_map;
- static struct attribute_set *hotkey_dev_attributes;
- static void tpacpi_driver_event(const unsigned int hkey_event);
- static void hotkey_driver_event(const unsigned int scancode);
- static void hotkey_poll_setup(const bool may_warn);
- /* HKEY.MHKG() return bits */
- #define TP_HOTKEY_TABLET_MASK (1 << 3)
- enum {
- TP_ACPI_MULTI_MODE_INVALID = 0,
- TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0,
- TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1,
- TP_ACPI_MULTI_MODE_TABLET = 1 << 2,
- TP_ACPI_MULTI_MODE_FLAT = 1 << 3,
- TP_ACPI_MULTI_MODE_STAND = 1 << 4,
- TP_ACPI_MULTI_MODE_TENT = 1 << 5,
- TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6,
- };
- enum {
- /* The following modes are considered tablet mode for the purpose of
- * reporting the status to userspace. i.e. in all these modes it makes
- * sense to disable the laptop input devices such as touchpad and
- * keyboard.
- */
- TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT |
- TP_ACPI_MULTI_MODE_STAND_TENT,
- };
- static int hotkey_get_wlsw(void)
- {
- int status;
- if (!tp_features.hotkey_wlsw)
- return -ENODEV;
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wlswemul)
- return (tpacpi_wlsw_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- #endif
- if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
- return -EIO;
- return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- }
- static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode)
- {
- int type = (s >> 16) & 0xffff;
- int value = s & 0xffff;
- int mode = TP_ACPI_MULTI_MODE_INVALID;
- int valid_modes = 0;
- if (has_tablet_mode)
- *has_tablet_mode = 0;
- switch (type) {
- case 1:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND_TENT;
- break;
- case 2:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT;
- break;
- case 3:
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT;
- break;
- case 4:
- case 5:
- /* In mode 4, FLAT is not specified as a valid mode. However,
- * it can be seen at least on the X1 Yoga 2nd Generation.
- */
- valid_modes = TP_ACPI_MULTI_MODE_LAPTOP |
- TP_ACPI_MULTI_MODE_FLAT |
- TP_ACPI_MULTI_MODE_TABLET |
- TP_ACPI_MULTI_MODE_STAND |
- TP_ACPI_MULTI_MODE_TENT;
- break;
- default:
- pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n",
- type, value, TPACPI_MAIL);
- return 0;
- }
- if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE))
- *has_tablet_mode = 1;
- switch (value) {
- case 1:
- mode = TP_ACPI_MULTI_MODE_LAPTOP;
- break;
- case 2:
- mode = TP_ACPI_MULTI_MODE_FLAT;
- break;
- case 3:
- mode = TP_ACPI_MULTI_MODE_TABLET;
- break;
- case 4:
- if (type == 1)
- mode = TP_ACPI_MULTI_MODE_STAND_TENT;
- else
- mode = TP_ACPI_MULTI_MODE_STAND;
- break;
- case 5:
- mode = TP_ACPI_MULTI_MODE_TENT;
- break;
- default:
- if (type == 5 && value == 0xffff) {
- pr_warn("Multi mode status is undetected, assuming laptop\n");
- return 0;
- }
- }
- if (!(mode & valid_modes)) {
- pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n",
- value, type, TPACPI_MAIL);
- return 0;
- }
- return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE);
- }
- static int hotkey_get_tablet_mode(int *status)
- {
- int s;
- switch (tp_features.hotkey_tablet) {
- case TP_HOTKEY_TABLET_USES_MHKG:
- if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
- return -EIO;
- *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
- break;
- case TP_HOTKEY_TABLET_USES_GMMS:
- if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0))
- return -EIO;
- *status = hotkey_gmms_get_tablet_mode(s, NULL);
- break;
- default:
- break;
- }
- return 0;
- }
- /*
- * Reads current event mask from firmware, and updates
- * hotkey_acpi_mask accordingly. Also resets any bits
- * from hotkey_user_mask that are unavailable to be
- * delivered (shadow requirement of the userspace ABI).
- *
- * Call with hotkey_mutex held
- */
- static int hotkey_mask_get(void)
- {
- if (tp_features.hotkey_mask) {
- u32 m = 0;
- if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
- return -EIO;
- hotkey_acpi_mask = m;
- } else {
- /* no mask support doesn't mean no event support... */
- hotkey_acpi_mask = hotkey_all_mask;
- }
- /* sync userspace-visible mask */
- hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
- return 0;
- }
- static void hotkey_mask_warn_incomplete_mask(void)
- {
- /* log only what the user can fix... */
- const u32 wantedmask = hotkey_driver_mask &
- ~(hotkey_acpi_mask | hotkey_source_mask) &
- (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
- if (wantedmask)
- pr_notice("required events 0x%08x not enabled!\n", wantedmask);
- }
- /*
- * Set the firmware mask when supported
- *
- * Also calls hotkey_mask_get to update hotkey_acpi_mask.
- *
- * NOTE: does not set bits in hotkey_user_mask, but may reset them.
- *
- * Call with hotkey_mutex held
- */
- static int hotkey_mask_set(u32 mask)
- {
- int i;
- int rc = 0;
- const u32 fwmask = mask & ~hotkey_source_mask;
- if (tp_features.hotkey_mask) {
- for (i = 0; i < 32; i++) {
- if (!acpi_evalf(hkey_handle,
- NULL, "MHKM", "vdd", i + 1,
- !!(mask & (1 << i)))) {
- rc = -EIO;
- break;
- }
- }
- }
- /*
- * We *must* make an inconditional call to hotkey_mask_get to
- * refresh hotkey_acpi_mask and update hotkey_user_mask
- *
- * Take the opportunity to also log when we cannot _enable_
- * a given event.
- */
- if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
- pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n",
- fwmask, hotkey_acpi_mask);
- }
- if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
- hotkey_mask_warn_incomplete_mask();
- return rc;
- }
- /*
- * Sets hotkey_user_mask and tries to set the firmware mask
- *
- * Call with hotkey_mutex held
- */
- static int hotkey_user_mask_set(const u32 mask)
- {
- int rc;
- /* Give people a chance to notice they are doing something that
- * is bound to go boom on their users sooner or later */
- if (!tp_warned.hotkey_mask_ff &&
- (mask == 0xffff || mask == 0xffffff ||
- mask == 0xffffffff)) {
- tp_warned.hotkey_mask_ff = 1;
- pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n",
- mask);
- pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n");
- }
- /* Try to enable what the user asked for, plus whatever we need.
- * this syncs everything but won't enable bits in hotkey_user_mask */
- rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
- /* Enable the available bits in hotkey_user_mask */
- hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
- return rc;
- }
- /*
- * Sets the driver hotkey mask.
- *
- * Can be called even if the hotkey subdriver is inactive
- */
- static int tpacpi_hotkey_driver_mask_set(const u32 mask)
- {
- int rc;
- /* Do the right thing if hotkey_init has not been called yet */
- if (!tp_features.hotkey) {
- hotkey_driver_mask = mask;
- return 0;
- }
- mutex_lock(&hotkey_mutex);
- HOTKEY_CONFIG_CRITICAL_START
- hotkey_driver_mask = mask;
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_source_mask |= (mask & ~hotkey_all_mask);
- #endif
- HOTKEY_CONFIG_CRITICAL_END
- rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
- ~hotkey_source_mask);
- hotkey_poll_setup(true);
- mutex_unlock(&hotkey_mutex);
- return rc;
- }
- static int hotkey_status_get(int *status)
- {
- if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
- return -EIO;
- return 0;
- }
- static int hotkey_status_set(bool enable)
- {
- if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
- return -EIO;
- return 0;
- }
- static void tpacpi_input_send_tabletsw(void)
- {
- int state;
- if (tp_features.hotkey_tablet &&
- !hotkey_get_tablet_mode(&state)) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
- input_report_switch(tpacpi_inputdev,
- SW_TABLET_MODE, !!state);
- input_sync(tpacpi_inputdev);
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
- }
- /* Do NOT call without validating scancode first */
- static void tpacpi_input_send_key(const unsigned int scancode)
- {
- const unsigned int keycode = hotkey_keycode_map[scancode];
- if (keycode != KEY_RESERVED) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
- input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
- input_report_key(tpacpi_inputdev, keycode, 1);
- input_sync(tpacpi_inputdev);
- input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
- input_report_key(tpacpi_inputdev, keycode, 0);
- input_sync(tpacpi_inputdev);
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
- }
- /* Do NOT call without validating scancode first */
- static void tpacpi_input_send_key_masked(const unsigned int scancode)
- {
- hotkey_driver_event(scancode);
- if (hotkey_user_mask & (1 << scancode))
- tpacpi_input_send_key(scancode);
- }
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
- /* Do NOT call without validating scancode first */
- static void tpacpi_hotkey_send_key(unsigned int scancode)
- {
- tpacpi_input_send_key_masked(scancode);
- }
- static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
- {
- u8 d;
- if (m & TP_NVRAM_HKEY_GROUP_HK2) {
- d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
- n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
- n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
- n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
- n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
- }
- if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) {
- d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
- n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
- }
- if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
- d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
- n->displayexp_toggle =
- !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
- }
- if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
- d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
- n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
- n->brightness_toggle =
- !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
- }
- if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
- d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
- n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
- >> TP_NVRAM_POS_LEVEL_VOLUME;
- n->mute = !!(d & TP_NVRAM_MASK_MUTE);
- n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
- }
- }
- #define TPACPI_COMPARE_KEY(__scancode, __member) \
- do { \
- if ((event_mask & (1 << __scancode)) && \
- oldn->__member != newn->__member) \
- tpacpi_hotkey_send_key(__scancode); \
- } while (0)
- #define TPACPI_MAY_SEND_KEY(__scancode) \
- do { \
- if (event_mask & (1 << __scancode)) \
- tpacpi_hotkey_send_key(__scancode); \
- } while (0)
- static void issue_volchange(const unsigned int oldvol,
- const unsigned int newvol,
- const u32 event_mask)
- {
- unsigned int i = oldvol;
- while (i > newvol) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
- i--;
- }
- while (i < newvol) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- i++;
- }
- }
- static void issue_brightnesschange(const unsigned int oldbrt,
- const unsigned int newbrt,
- const u32 event_mask)
- {
- unsigned int i = oldbrt;
- while (i > newbrt) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
- i--;
- }
- while (i < newbrt) {
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
- i++;
- }
- }
- static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
- struct tp_nvram_state *newn,
- const u32 event_mask)
- {
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
- TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
- /*
- * Handle volume
- *
- * This code is supposed to duplicate the IBM firmware behaviour:
- * - Pressing MUTE issues mute hotkey message, even when already mute
- * - Pressing Volume up/down issues volume up/down hotkey messages,
- * even when already at maximum or minimum volume
- * - The act of unmuting issues volume up/down notification,
- * depending which key was used to unmute
- *
- * We are constrained to what the NVRAM can tell us, which is not much
- * and certainly not enough if more than one volume hotkey was pressed
- * since the last poll cycle.
- *
- * Just to make our life interesting, some newer Lenovo ThinkPads have
- * bugs in the BIOS and may fail to update volume_toggle properly.
- */
- if (newn->mute) {
- /* muted */
- if (!oldn->mute ||
- oldn->volume_toggle != newn->volume_toggle ||
- oldn->volume_level != newn->volume_level) {
- /* recently muted, or repeated mute keypress, or
- * multiple presses ending in mute */
- issue_volchange(oldn->volume_level, newn->volume_level,
- event_mask);
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
- }
- } else {
- /* unmute */
- if (oldn->mute) {
- /* recently unmuted, issue 'unmute' keypress */
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- }
- if (oldn->volume_level != newn->volume_level) {
- issue_volchange(oldn->volume_level, newn->volume_level,
- event_mask);
- } else if (oldn->volume_toggle != newn->volume_toggle) {
- /* repeated vol up/down keypress at end of scale ? */
- if (newn->volume_level == 0)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
- else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
- }
- }
- /* handle brightness */
- if (oldn->brightness_level != newn->brightness_level) {
- issue_brightnesschange(oldn->brightness_level,
- newn->brightness_level, event_mask);
- } else if (oldn->brightness_toggle != newn->brightness_toggle) {
- /* repeated key presses that didn't change state */
- if (newn->brightness_level == 0)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
- else if (newn->brightness_level >= bright_maxlvl
- && !tp_features.bright_unkfw)
- TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
- }
- #undef TPACPI_COMPARE_KEY
- #undef TPACPI_MAY_SEND_KEY
- }
- /*
- * Polling driver
- *
- * We track all events in hotkey_source_mask all the time, since
- * most of them are edge-based. We only issue those requested by
- * hotkey_user_mask or hotkey_driver_mask, though.
- */
- static int hotkey_kthread(void *data)
- {
- struct tp_nvram_state s[2] = { 0 };
- u32 poll_mask, event_mask;
- unsigned int si, so;
- unsigned long t;
- unsigned int change_detector;
- unsigned int poll_freq;
- bool was_frozen;
- if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
- goto exit;
- set_freezable();
- so = 0;
- si = 1;
- t = 0;
- /* Initial state for compares */
- mutex_lock(&hotkey_thread_data_mutex);
- change_detector = hotkey_config_change;
- poll_mask = hotkey_source_mask;
- event_mask = hotkey_source_mask &
- (hotkey_driver_mask | hotkey_user_mask);
- poll_freq = hotkey_poll_freq;
- mutex_unlock(&hotkey_thread_data_mutex);
- hotkey_read_nvram(&s[so], poll_mask);
- while (!kthread_should_stop()) {
- if (t == 0) {
- if (likely(poll_freq))
- t = 1000/poll_freq;
- else
- t = 100; /* should never happen... */
- }
- t = msleep_interruptible(t);
- if (unlikely(kthread_freezable_should_stop(&was_frozen)))
- break;
- if (t > 0 && !was_frozen)
- continue;
- mutex_lock(&hotkey_thread_data_mutex);
- if (was_frozen || hotkey_config_change != change_detector) {
- /* forget old state on thaw or config change */
- si = so;
- t = 0;
- change_detector = hotkey_config_change;
- }
- poll_mask = hotkey_source_mask;
- event_mask = hotkey_source_mask &
- (hotkey_driver_mask | hotkey_user_mask);
- poll_freq = hotkey_poll_freq;
- mutex_unlock(&hotkey_thread_data_mutex);
- if (likely(poll_mask)) {
- hotkey_read_nvram(&s[si], poll_mask);
- if (likely(si != so)) {
- hotkey_compare_and_issue_event(&s[so], &s[si],
- event_mask);
- }
- }
- so = si;
- si ^= 1;
- }
- exit:
- return 0;
- }
- /* call with hotkey_mutex held */
- static void hotkey_poll_stop_sync(void)
- {
- if (tpacpi_hotkey_task) {
- kthread_stop(tpacpi_hotkey_task);
- tpacpi_hotkey_task = NULL;
- }
- }
- /* call with hotkey_mutex held */
- static void hotkey_poll_setup(const bool may_warn)
- {
- const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
- const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
- if (hotkey_poll_freq > 0 &&
- (poll_driver_mask ||
- (poll_user_mask && tpacpi_inputdev->users > 0))) {
- if (!tpacpi_hotkey_task) {
- tpacpi_hotkey_task = kthread_run(hotkey_kthread,
- NULL, TPACPI_NVRAM_KTHREAD_NAME);
- if (IS_ERR(tpacpi_hotkey_task)) {
- tpacpi_hotkey_task = NULL;
- pr_err("could not create kernel thread for hotkey polling\n");
- }
- }
- } else {
- hotkey_poll_stop_sync();
- if (may_warn && (poll_driver_mask || poll_user_mask) &&
- hotkey_poll_freq == 0) {
- pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n",
- poll_user_mask, poll_driver_mask);
- }
- }
- }
- static void hotkey_poll_setup_safe(const bool may_warn)
- {
- mutex_lock(&hotkey_mutex);
- hotkey_poll_setup(may_warn);
- mutex_unlock(&hotkey_mutex);
- }
- /* call with hotkey_mutex held */
- static void hotkey_poll_set_freq(unsigned int freq)
- {
- if (!freq)
- hotkey_poll_stop_sync();
- hotkey_poll_freq = freq;
- }
- #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
- static void hotkey_poll_setup(const bool __unused)
- {
- }
- static void hotkey_poll_setup_safe(const bool __unused)
- {
- }
- #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
- static int hotkey_inputdev_open(struct input_dev *dev)
- {
- switch (tpacpi_lifecycle) {
- case TPACPI_LIFE_INIT:
- case TPACPI_LIFE_RUNNING:
- hotkey_poll_setup_safe(false);
- return 0;
- case TPACPI_LIFE_EXITING:
- return -EBUSY;
- }
- /* Should only happen if tpacpi_lifecycle is corrupt */
- BUG();
- return -EBUSY;
- }
- static void hotkey_inputdev_close(struct input_dev *dev)
- {
- /* disable hotkey polling when possible */
- if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
- !(hotkey_source_mask & hotkey_driver_mask))
- hotkey_poll_setup_safe(false);
- }
- /* sysfs hotkey enable ------------------------------------------------- */
- static ssize_t hotkey_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res, status;
- printk_deprecated_attribute("hotkey_enable",
- "Hotkey reporting is always enabled");
- res = hotkey_status_get(&status);
- if (res)
- return res;
- return snprintf(buf, PAGE_SIZE, "%d\n", status);
- }
- static ssize_t hotkey_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- printk_deprecated_attribute("hotkey_enable",
- "Hotkeys can be disabled through hotkey_mask");
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
- if (t == 0)
- return -EPERM;
- return count;
- }
- static DEVICE_ATTR_RW(hotkey_enable);
- /* sysfs hotkey mask --------------------------------------------------- */
- static ssize_t hotkey_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
- }
- static ssize_t hotkey_mask_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- int res;
- if (parse_strtoul(buf, 0xffffffffUL, &t))
- return -EINVAL;
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- res = hotkey_user_mask_set(t);
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_poll_setup(true);
- #endif
- mutex_unlock(&hotkey_mutex);
- tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
- return (res) ? res : count;
- }
- static DEVICE_ATTR_RW(hotkey_mask);
- /* sysfs hotkey bios_enabled ------------------------------------------- */
- static ssize_t hotkey_bios_enabled_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return sprintf(buf, "0\n");
- }
- static DEVICE_ATTR_RO(hotkey_bios_enabled);
- /* sysfs hotkey bios_mask ---------------------------------------------- */
- static ssize_t hotkey_bios_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- printk_deprecated_attribute("hotkey_bios_mask",
- "This attribute is useless.");
- return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
- }
- static DEVICE_ATTR_RO(hotkey_bios_mask);
- /* sysfs hotkey all_mask ----------------------------------------------- */
- static ssize_t hotkey_all_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n",
- hotkey_all_mask | hotkey_source_mask);
- }
- static DEVICE_ATTR_RO(hotkey_all_mask);
- /* sysfs hotkey all_mask ----------------------------------------------- */
- static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n",
- hotkey_adaptive_all_mask | hotkey_source_mask);
- }
- static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
- /* sysfs hotkey recommended_mask --------------------------------------- */
- static ssize_t hotkey_recommended_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n",
- (hotkey_all_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask);
- }
- static DEVICE_ATTR_RO(hotkey_recommended_mask);
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- /* sysfs hotkey hotkey_source_mask ------------------------------------- */
- static ssize_t hotkey_source_mask_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
- }
- static ssize_t hotkey_source_mask_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- u32 r_ev;
- int rc;
- if (parse_strtoul(buf, 0xffffffffUL, &t) ||
- ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
- return -EINVAL;
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- HOTKEY_CONFIG_CRITICAL_START
- hotkey_source_mask = t;
- HOTKEY_CONFIG_CRITICAL_END
- rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
- ~hotkey_source_mask);
- hotkey_poll_setup(true);
- /* check if events needed by the driver got disabled */
- r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
- & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
- mutex_unlock(&hotkey_mutex);
- if (rc < 0)
- pr_err("hotkey_source_mask: failed to update the firmware event mask!\n");
- if (r_ev)
- pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n",
- r_ev);
- tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
- return (rc < 0) ? rc : count;
- }
- static DEVICE_ATTR_RW(hotkey_source_mask);
- /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
- static ssize_t hotkey_poll_freq_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
- }
- static ssize_t hotkey_poll_freq_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 25, &t))
- return -EINVAL;
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- hotkey_poll_set_freq(t);
- hotkey_poll_setup(true);
- mutex_unlock(&hotkey_mutex);
- tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
- return count;
- }
- static DEVICE_ATTR_RW(hotkey_poll_freq);
- #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
- /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
- static ssize_t hotkey_radio_sw_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res;
- res = hotkey_get_wlsw();
- if (res < 0)
- return res;
- /* Opportunistic update */
- tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
- }
- static DEVICE_ATTR_RO(hotkey_radio_sw);
- static void hotkey_radio_sw_notify_change(void)
- {
- if (tp_features.hotkey_wlsw)
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "hotkey_radio_sw");
- }
- /* sysfs hotkey tablet mode (pollable) --------------------------------- */
- static ssize_t hotkey_tablet_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res, s;
- res = hotkey_get_tablet_mode(&s);
- if (res < 0)
- return res;
- return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
- }
- static DEVICE_ATTR_RO(hotkey_tablet_mode);
- static void hotkey_tablet_mode_notify_change(void)
- {
- if (tp_features.hotkey_tablet)
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "hotkey_tablet_mode");
- }
- /* sysfs wakeup reason (pollable) -------------------------------------- */
- static ssize_t hotkey_wakeup_reason_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
- }
- static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
- static void hotkey_wakeup_reason_notify_change(void)
- {
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "wakeup_reason");
- }
- /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
- static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
- }
- static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO,
- hotkey_wakeup_hotunplug_complete_show, NULL);
- static void hotkey_wakeup_hotunplug_complete_notify_change(void)
- {
- sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
- "wakeup_hotunplug_complete");
- }
- /* sysfs adaptive kbd mode --------------------------------------------- */
- static int adaptive_keyboard_get_mode(void);
- static int adaptive_keyboard_set_mode(int new_mode);
- enum ADAPTIVE_KEY_MODE {
- HOME_MODE,
- WEB_BROWSER_MODE,
- WEB_CONFERENCE_MODE,
- FUNCTION_MODE,
- LAYFLAT_MODE
- };
- static ssize_t adaptive_kbd_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int current_mode;
- current_mode = adaptive_keyboard_get_mode();
- if (current_mode < 0)
- return current_mode;
- return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
- }
- static ssize_t adaptive_kbd_mode_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- int res;
- if (parse_strtoul(buf, LAYFLAT_MODE, &t))
- return -EINVAL;
- res = adaptive_keyboard_set_mode(t);
- return (res < 0) ? res : count;
- }
- static DEVICE_ATTR_RW(adaptive_kbd_mode);
- static struct attribute *adaptive_kbd_attributes[] = {
- &dev_attr_adaptive_kbd_mode.attr,
- NULL
- };
- static const struct attribute_group adaptive_kbd_attr_group = {
- .attrs = adaptive_kbd_attributes,
- };
- /* --------------------------------------------------------------------- */
- static struct attribute *hotkey_attributes[] __initdata = {
- &dev_attr_hotkey_enable.attr,
- &dev_attr_hotkey_bios_enabled.attr,
- &dev_attr_hotkey_bios_mask.attr,
- &dev_attr_wakeup_reason.attr,
- &dev_attr_wakeup_hotunplug_complete.attr,
- &dev_attr_hotkey_mask.attr,
- &dev_attr_hotkey_all_mask.attr,
- &dev_attr_hotkey_adaptive_all_mask.attr,
- &dev_attr_hotkey_recommended_mask.attr,
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- &dev_attr_hotkey_source_mask.attr,
- &dev_attr_hotkey_poll_freq.attr,
- #endif
- };
- /*
- * Sync both the hw and sw blocking state of all switches
- */
- static void tpacpi_send_radiosw_update(void)
- {
- int wlsw;
- /*
- * We must sync all rfkill controllers *before* issuing any
- * rfkill input events, or we will race the rfkill core input
- * handler.
- *
- * tpacpi_inputdev_send_mutex works as a synchronization point
- * for the above.
- *
- * We optimize to avoid numerous calls to hotkey_get_wlsw.
- */
- wlsw = hotkey_get_wlsw();
- /* Sync hw blocking state first if it is hw-blocked */
- if (wlsw == TPACPI_RFK_RADIO_OFF)
- tpacpi_rfk_update_hwblock_state(true);
- /* Sync sw blocking state */
- tpacpi_rfk_update_swstate_all();
- /* Sync hw blocking state last if it is hw-unblocked */
- if (wlsw == TPACPI_RFK_RADIO_ON)
- tpacpi_rfk_update_hwblock_state(false);
- /* Issue rfkill input event for WLSW switch */
- if (!(wlsw < 0)) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
- input_report_switch(tpacpi_inputdev,
- SW_RFKILL_ALL, (wlsw > 0));
- input_sync(tpacpi_inputdev);
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
- /*
- * this can be unconditional, as we will poll state again
- * if userspace uses the notify to read data
- */
- hotkey_radio_sw_notify_change();
- }
- static void hotkey_exit(void)
- {
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- mutex_lock(&hotkey_mutex);
- hotkey_poll_stop_sync();
- mutex_unlock(&hotkey_mutex);
- #endif
- if (hotkey_dev_attributes)
- delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
- dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
- "restoring original HKEY status and mask\n");
- /* yes, there is a bitwise or below, we want the
- * functions to be called even if one of them fail */
- if (((tp_features.hotkey_mask &&
- hotkey_mask_set(hotkey_orig_mask)) |
- hotkey_status_set(false)) != 0)
- pr_err("failed to restore hot key mask to BIOS defaults\n");
- }
- static void __init hotkey_unmap(const unsigned int scancode)
- {
- if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
- clear_bit(hotkey_keycode_map[scancode],
- tpacpi_inputdev->keybit);
- hotkey_keycode_map[scancode] = KEY_RESERVED;
- }
- }
- /*
- * HKEY quirks:
- * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
- */
- #define TPACPI_HK_Q_INIMASK 0x0001
- static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
- TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
- TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
- TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
- TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
- TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
- TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
- TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
- TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
- TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
- TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
- TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
- TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
- TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
- TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
- TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
- TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
- TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
- TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
- TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
- };
- typedef u16 tpacpi_keymap_entry_t;
- typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
- static int hotkey_init_tablet_mode(void)
- {
- int in_tablet_mode = 0, res;
- char *type = NULL;
- if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) {
- int has_tablet_mode;
- in_tablet_mode = hotkey_gmms_get_tablet_mode(res,
- &has_tablet_mode);
- /*
- * The Yoga 11e series has 2 accelerometers described by a
- * BOSC0200 ACPI node. This setup relies on a Windows service
- * which calls special ACPI methods on this node to report
- * the laptop/tent/tablet mode to the EC. The bmc150 iio driver
- * does not support this, so skip the hotkey on these models.
- */
- if (has_tablet_mode && !acpi_dev_present("BOSC0200", "1", -1))
- tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS;
- type = "GMMS";
- } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
- /* For X41t, X60t, X61t Tablets... */
- tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG;
- in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK);
- type = "MHKG";
- }
- if (!tp_features.hotkey_tablet)
- return 0;
- pr_info("Tablet mode switch found (type: %s), currently in %s mode\n",
- type, in_tablet_mode ? "tablet" : "laptop");
- res = add_to_attr_set(hotkey_dev_attributes,
- &dev_attr_hotkey_tablet_mode.attr);
- if (res)
- return -1;
- return in_tablet_mode;
- }
- static int __init hotkey_init(struct ibm_init_struct *iibm)
- {
- /* Requirements for changing the default keymaps:
- *
- * 1. Many of the keys are mapped to KEY_RESERVED for very
- * good reasons. Do not change them unless you have deep
- * knowledge on the IBM and Lenovo ThinkPad firmware for
- * the various ThinkPad models. The driver behaves
- * differently for KEY_RESERVED: such keys have their
- * hot key mask *unset* in mask_recommended, and also
- * in the initial hot key mask programmed into the
- * firmware at driver load time, which means the firm-
- * ware may react very differently if you change them to
- * something else;
- *
- * 2. You must be subscribed to the linux-thinkpad and
- * ibm-acpi-devel mailing lists, and you should read the
- * list archives since 2007 if you want to change the
- * keymaps. This requirement exists so that you will
- * know the past history of problems with the thinkpad-
- * acpi driver keymaps, and also that you will be
- * listening to any bug reports;
- *
- * 3. Do not send thinkpad-acpi specific patches directly to
- * for merging, *ever*. Send them to the linux-acpi
- * mailinglist for comments. Merging is to be done only
- * through acpi-test and the ACPI maintainer.
- *
- * If the above is too much to ask, don't change the keymap.
- * Ask the thinkpad-acpi maintainer to do it, instead.
- */
- enum keymap_index {
- TPACPI_KEYMAP_IBM_GENERIC = 0,
- TPACPI_KEYMAP_LENOVO_GENERIC,
- };
- static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
- /* Generic keymap for IBM ThinkPads */
- [TPACPI_KEYMAP_IBM_GENERIC] = {
- /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
- KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
- KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
- KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
- /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
- KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
- KEY_UNKNOWN, /* 0x0D: FN+INSERT */
- KEY_UNKNOWN, /* 0x0E: FN+DELETE */
- /* brightness: firmware always reacts to them */
- KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
- KEY_RESERVED, /* 0x10: FN+END (brightness down) */
- /* Thinklight: firmware always react to it */
- KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
- KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
- KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
- /* Volume: firmware always react to it and reprograms
- * the built-in *extra* mixer. Never map it to control
- * another mixer by default. */
- KEY_RESERVED, /* 0x14: VOLUME UP */
- KEY_RESERVED, /* 0x15: VOLUME DOWN */
- KEY_RESERVED, /* 0x16: MUTE */
- KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
- /* (assignments unknown, please report if found) */
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- /* No assignments, only used for Adaptive keyboards. */
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- /* No assignment, used for newer Lenovo models */
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN
- },
- /* Generic keymap for Lenovo ThinkPads */
- [TPACPI_KEYMAP_LENOVO_GENERIC] = {
- /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
- KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
- KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
- KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
- /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
- KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
- KEY_UNKNOWN, /* 0x0D: FN+INSERT */
- KEY_UNKNOWN, /* 0x0E: FN+DELETE */
- /* These should be enabled --only-- when ACPI video
- * is disabled (i.e. in "vendor" mode), and are handled
- * in a special way by the init code */
- KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
- KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
- KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
- KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
- KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
- /* Volume: z60/z61, T60 (BIOS version?): firmware always
- * react to it and reprograms the built-in *extra* mixer.
- * Never map it to control another mixer by default.
- *
- * T60?, T61, R60?, R61: firmware and EC tries to send
- * these over the regular keyboard, so these are no-ops,
- * but there are still weird bugs re. MUTE, so do not
- * change unless you get test reports from all Lenovo
- * models. May cause the BIOS to interfere with the
- * HDA mixer.
- */
- KEY_RESERVED, /* 0x14: VOLUME UP */
- KEY_RESERVED, /* 0x15: VOLUME DOWN */
- KEY_RESERVED, /* 0x16: MUTE */
- KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
- /* (assignments unknown, please report if found) */
- KEY_UNKNOWN, KEY_UNKNOWN,
- /*
- * The mic mute button only sends 0x1a. It does not
- * automatically mute the mic or change the mute light.
- */
- KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
- /* (assignments unknown, please report if found) */
- KEY_UNKNOWN,
- /* Extra keys in use since the X240 / T440 / T540 */
- KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
- /*
- * These are the adaptive keyboard keycodes for Carbon X1 2014.
- * The first item in this list is the Mute button which is
- * emitted with 0x103 through
- * adaptive_keyboard_hotkey_notify_hotkey() when the sound
- * symbol is held.
- * We'll need to offset those by 0x20.
- */
- KEY_RESERVED, /* Mute held, 0x103 */
- KEY_BRIGHTNESS_MIN, /* Backlight off */
- KEY_RESERVED, /* Clipping tool */
- KEY_RESERVED, /* Cloud */
- KEY_RESERVED,
- KEY_VOICECOMMAND, /* Voice */
- KEY_RESERVED,
- KEY_RESERVED, /* Gestures */
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_RESERVED,
- KEY_CONFIG, /* Settings */
- KEY_RESERVED, /* New tab */
- KEY_REFRESH, /* Reload */
- KEY_BACK, /* Back */
- KEY_RESERVED, /* Microphone down */
- KEY_RESERVED, /* Microphone up */
- KEY_RESERVED, /* Microphone cancellation */
- KEY_RESERVED, /* Camera mode */
- KEY_RESERVED, /* Rotate display, 0x116 */
- /*
- * These are found in 2017 models (e.g. T470s, X270).
- * The lowest known value is 0x311, which according to
- * the manual should launch a user defined favorite
- * application.
- *
- * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START,
- * corresponding to 0x34.
- */
- /* (assignments unknown, please report if found) */
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
- KEY_UNKNOWN,
- KEY_FAVORITES, /* Favorite app, 0x311 */
- KEY_RESERVED, /* Clipping tool */
- KEY_CALC, /* Calculator (above numpad, P52) */
- KEY_BLUETOOTH, /* Bluetooth */
- KEY_KEYBOARD /* Keyboard, 0x315 */
- },
- };
- static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
- /* Generic maps (fallback) */
- {
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_KEYMAP_IBM_GENERIC,
- },
- {
- .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
- },
- };
- #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
- #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
- int res, i;
- int status;
- int hkeyv;
- bool radiosw_state = false;
- bool tabletsw_state = false;
- unsigned long quirks;
- unsigned long keymap_id;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "initializing hotkey subdriver\n");
- BUG_ON(!tpacpi_inputdev);
- BUG_ON(tpacpi_inputdev->open != NULL ||
- tpacpi_inputdev->close != NULL);
- TPACPI_ACPIHANDLE_INIT(hkey);
- mutex_init(&hotkey_mutex);
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- mutex_init(&hotkey_thread_data_mutex);
- #endif
- /* hotkey not supported on 570 */
- tp_features.hotkey = hkey_handle != NULL;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkeys are %s\n",
- str_supported(tp_features.hotkey));
- if (!tp_features.hotkey)
- return 1;
- quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
- ARRAY_SIZE(tpacpi_hotkey_qtable));
- tpacpi_disable_brightness_delay();
- /* MUST have enough space for all attributes to be added to
- * hotkey_dev_attributes */
- hotkey_dev_attributes = create_attr_set(
- ARRAY_SIZE(hotkey_attributes) + 2,
- NULL);
- if (!hotkey_dev_attributes)
- return -ENOMEM;
- res = add_many_to_attr_set(hotkey_dev_attributes,
- hotkey_attributes,
- ARRAY_SIZE(hotkey_attributes));
- if (res)
- goto err_exit;
- /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
- A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
- for HKEY interface version 0x100 */
- if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "firmware HKEY interface version: 0x%x\n",
- hkeyv);
- switch (hkeyv >> 8) {
- case 1:
- /*
- * MHKV 0x100 in A31, R40, R40e,
- * T4x, X31, and later
- */
- /* Paranoia check AND init hotkey_all_mask */
- if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
- "MHKA", "qd")) {
- pr_err("missing MHKA handler, please report this to %s\n",
- TPACPI_MAIL);
- /* Fallback: pre-init for FN+F3,F4,F12 */
- hotkey_all_mask = 0x080cU;
- } else {
- tp_features.hotkey_mask = 1;
- }
- break;
- case 2:
- /*
- * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
- */
- /* Paranoia check AND init hotkey_all_mask */
- if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
- "MHKA", "dd", 1)) {
- pr_err("missing MHKA handler, please report this to %s\n",
- TPACPI_MAIL);
- /* Fallback: pre-init for FN+F3,F4,F12 */
- hotkey_all_mask = 0x080cU;
- } else {
- tp_features.hotkey_mask = 1;
- }
- /*
- * Check if we have an adaptive keyboard, like on the
- * Lenovo Carbon X1 2014 (2nd Gen).
- */
- if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
- "MHKA", "dd", 2)) {
- if (hotkey_adaptive_all_mask != 0) {
- tp_features.has_adaptive_kbd = true;
- res = sysfs_create_group(
- &tpacpi_pdev->dev.kobj,
- &adaptive_kbd_attr_group);
- if (res)
- goto err_exit;
- }
- } else {
- tp_features.has_adaptive_kbd = false;
- hotkey_adaptive_all_mask = 0x0U;
- }
- break;
- default:
- pr_err("unknown version of the HKEY interface: 0x%x\n",
- hkeyv);
- pr_err("please report this to %s\n", TPACPI_MAIL);
- break;
- }
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkey masks are %s\n",
- str_supported(tp_features.hotkey_mask));
- /* Init hotkey_all_mask if not initialized yet */
- if (!tp_features.hotkey_mask && !hotkey_all_mask &&
- (quirks & TPACPI_HK_Q_INIMASK))
- hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
- /* Init hotkey_acpi_mask and hotkey_orig_mask */
- if (tp_features.hotkey_mask) {
- /* hotkey_source_mask *must* be zero for
- * the first hotkey_mask_get to return hotkey_orig_mask */
- res = hotkey_mask_get();
- if (res)
- goto err_exit;
- hotkey_orig_mask = hotkey_acpi_mask;
- } else {
- hotkey_orig_mask = hotkey_all_mask;
- hotkey_acpi_mask = hotkey_all_mask;
- }
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wlswemul) {
- tp_features.hotkey_wlsw = 1;
- radiosw_state = !!tpacpi_wlsw_emulstate;
- pr_info("radio switch emulation enabled\n");
- } else
- #endif
- /* Not all thinkpads have a hardware radio switch */
- if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
- tp_features.hotkey_wlsw = 1;
- radiosw_state = !!status;
- pr_info("radio switch found; radios are %s\n",
- enabled(status, 0));
- }
- if (tp_features.hotkey_wlsw)
- res = add_to_attr_set(hotkey_dev_attributes,
- &dev_attr_hotkey_radio_sw.attr);
- res = hotkey_init_tablet_mode();
- if (res < 0)
- goto err_exit;
- tabletsw_state = res;
- res = register_attr_set_with_sysfs(hotkey_dev_attributes,
- &tpacpi_pdev->dev.kobj);
- if (res)
- goto err_exit;
- /* Set up key map */
- hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
- GFP_KERNEL);
- if (!hotkey_keycode_map) {
- pr_err("failed to allocate memory for key map\n");
- res = -ENOMEM;
- goto err_exit;
- }
- keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
- ARRAY_SIZE(tpacpi_keymap_qtable));
- BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "using keymap number %lu\n", keymap_id);
- memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
- TPACPI_HOTKEY_MAP_SIZE);
- input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
- tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
- tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
- tpacpi_inputdev->keycode = hotkey_keycode_map;
- for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
- if (hotkey_keycode_map[i] != KEY_RESERVED) {
- input_set_capability(tpacpi_inputdev, EV_KEY,
- hotkey_keycode_map[i]);
- } else {
- if (i < sizeof(hotkey_reserved_mask)*8)
- hotkey_reserved_mask |= 1 << i;
- }
- }
- if (tp_features.hotkey_wlsw) {
- input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
- input_report_switch(tpacpi_inputdev,
- SW_RFKILL_ALL, radiosw_state);
- }
- if (tp_features.hotkey_tablet) {
- input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
- input_report_switch(tpacpi_inputdev,
- SW_TABLET_MODE, tabletsw_state);
- }
- /* Do not issue duplicate brightness change events to
- * userspace. tpacpi_detect_brightness_capabilities() must have
- * been called before this point */
- if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
- pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n");
- pr_notice("Disabling thinkpad-acpi brightness events by default...\n");
- /* Disable brightness up/down on Lenovo thinkpads when
- * ACPI is handling them, otherwise it is plain impossible
- * for userspace to do something even remotely sane */
- hotkey_reserved_mask |=
- (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
- | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
- hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
- hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
- }
- #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
- hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
- & ~hotkey_all_mask
- & ~hotkey_reserved_mask;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "hotkey source mask 0x%08x, polling freq %u\n",
- hotkey_source_mask, hotkey_poll_freq);
- #endif
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "enabling firmware HKEY event interface...\n");
- res = hotkey_status_set(true);
- if (res) {
- hotkey_exit();
- return res;
- }
- res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
- | hotkey_driver_mask)
- & ~hotkey_source_mask);
- if (res < 0 && res != -ENXIO) {
- hotkey_exit();
- return res;
- }
- hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
- hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
- tpacpi_inputdev->open = &hotkey_inputdev_open;
- tpacpi_inputdev->close = &hotkey_inputdev_close;
- hotkey_poll_setup_safe(true);
- return 0;
- err_exit:
- delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
- sysfs_remove_group(&tpacpi_pdev->dev.kobj,
- &adaptive_kbd_attr_group);
- hotkey_dev_attributes = NULL;
- return (res < 0) ? res : 1;
- }
- /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
- * mode, Web conference mode, Function mode and Lay-flat mode.
- * We support Home mode and Function mode currently.
- *
- * Will consider support rest of modes in future.
- *
- */
- static const int adaptive_keyboard_modes[] = {
- HOME_MODE,
- /* WEB_BROWSER_MODE = 2,
- WEB_CONFERENCE_MODE = 3, */
- FUNCTION_MODE
- };
- #define DFR_CHANGE_ROW 0x101
- #define DFR_SHOW_QUICKVIEW_ROW 0x102
- #define FIRST_ADAPTIVE_KEY 0x103
- /* press Fn key a while second, it will switch to Function Mode. Then
- * release Fn key, previous mode be restored.
- */
- static bool adaptive_keyboard_mode_is_saved;
- static int adaptive_keyboard_prev_mode;
- static int adaptive_keyboard_get_mode(void)
- {
- int mode = 0;
- if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode\n");
- return -EIO;
- }
- return mode;
- }
- static int adaptive_keyboard_set_mode(int new_mode)
- {
- if (new_mode < 0 ||
- new_mode > LAYFLAT_MODE)
- return -EINVAL;
- if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
- pr_err("Cannot set adaptive keyboard mode\n");
- return -EIO;
- }
- return 0;
- }
- static int adaptive_keyboard_get_next_mode(int mode)
- {
- size_t i;
- size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
- for (i = 0; i <= max_mode; i++) {
- if (adaptive_keyboard_modes[i] == mode)
- break;
- }
- if (i >= max_mode)
- i = 0;
- else
- i++;
- return adaptive_keyboard_modes[i];
- }
- static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
- {
- int current_mode = 0;
- int new_mode = 0;
- int keycode;
- switch (scancode) {
- case DFR_CHANGE_ROW:
- if (adaptive_keyboard_mode_is_saved) {
- new_mode = adaptive_keyboard_prev_mode;
- adaptive_keyboard_mode_is_saved = false;
- } else {
- current_mode = adaptive_keyboard_get_mode();
- if (current_mode < 0)
- return false;
- new_mode = adaptive_keyboard_get_next_mode(
- current_mode);
- }
- if (adaptive_keyboard_set_mode(new_mode) < 0)
- return false;
- return true;
- case DFR_SHOW_QUICKVIEW_ROW:
- current_mode = adaptive_keyboard_get_mode();
- if (current_mode < 0)
- return false;
- adaptive_keyboard_prev_mode = current_mode;
- adaptive_keyboard_mode_is_saved = true;
- if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
- return false;
- return true;
- default:
- if (scancode < FIRST_ADAPTIVE_KEY ||
- scancode >= FIRST_ADAPTIVE_KEY +
- TP_ACPI_HOTKEYSCAN_EXTENDED_START -
- TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
- pr_info("Unhandled adaptive keyboard key: 0x%x\n",
- scancode);
- return false;
- }
- keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY +
- TP_ACPI_HOTKEYSCAN_ADAPTIVE_START];
- if (keycode != KEY_RESERVED) {
- mutex_lock(&tpacpi_inputdev_send_mutex);
- input_report_key(tpacpi_inputdev, keycode, 1);
- input_sync(tpacpi_inputdev);
- input_report_key(tpacpi_inputdev, keycode, 0);
- input_sync(tpacpi_inputdev);
- mutex_unlock(&tpacpi_inputdev_send_mutex);
- }
- return true;
- }
- }
- static bool hotkey_notify_hotkey(const u32 hkey,
- bool *send_acpi_ev,
- bool *ignore_acpi_ev)
- {
- /* 0x1000-0x1FFF: key presses */
- unsigned int scancode = hkey & 0xfff;
- *send_acpi_ev = true;
- *ignore_acpi_ev = false;
- /*
- * Original events are in the 0x10XX range, the adaptive keyboard
- * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017
- * models, additional keys are emitted through 0x13XX.
- */
- switch ((hkey >> 8) & 0xf) {
- case 0:
- if (scancode > 0 &&
- scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) {
- /* HKEY event 0x1001 is scancode 0x00 */
- scancode--;
- if (!(hotkey_source_mask & (1 << scancode))) {
- tpacpi_input_send_key_masked(scancode);
- *send_acpi_ev = false;
- } else {
- *ignore_acpi_ev = true;
- }
- return true;
- }
- break;
- case 1:
- return adaptive_keyboard_hotkey_notify_hotkey(scancode);
- case 3:
- /* Extended keycodes start at 0x300 and our offset into the map
- * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode
- * will be positive, but might not be in the correct range.
- */
- scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START);
- if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START &&
- scancode < TPACPI_HOTKEY_MAP_LEN) {
- tpacpi_input_send_key(scancode);
- return true;
- }
- break;
- }
- return false;
- }
- static bool hotkey_notify_wakeup(const u32 hkey,
- bool *send_acpi_ev,
- bool *ignore_acpi_ev)
- {
- /* 0x2000-0x2FFF: Wakeup reason */
- *send_acpi_ev = true;
- *ignore_acpi_ev = false;
- switch (hkey) {
- case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
- case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
- *ignore_acpi_ev = true;
- break;
- case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
- case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
- *ignore_acpi_ev = true;
- break;
- case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
- case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
- pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
- /* how to auto-heal: */
- /* 2313: woke up from S3, go to S4/S5 */
- /* 2413: woke up from S4, go to S5 */
- break;
- default:
- return false;
- }
- if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
- pr_info("woke up due to a hot-unplug request...\n");
- hotkey_wakeup_reason_notify_change();
- }
- return true;
- }
- static bool hotkey_notify_dockevent(const u32 hkey,
- bool *send_acpi_ev,
- bool *ignore_acpi_ev)
- {
- /* 0x4000-0x4FFF: dock-related events */
- *send_acpi_ev = true;
- *ignore_acpi_ev = false;
- switch (hkey) {
- case TP_HKEY_EV_UNDOCK_ACK:
- /* ACPI undock operation completed after wakeup */
- hotkey_autosleep_ack = 1;
- pr_info("undocked\n");
- hotkey_wakeup_hotunplug_complete_notify_change();
- return true;
- case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
- pr_info("docked into hotplug port replicator\n");
- return true;
- case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
- pr_info("undocked from hotplug port replicator\n");
- return true;
- default:
- return false;
- }
- }
- static bool hotkey_notify_usrevent(const u32 hkey,
- bool *send_acpi_ev,
- bool *ignore_acpi_ev)
- {
- /* 0x5000-0x5FFF: human interface helpers */
- *send_acpi_ev = true;
- *ignore_acpi_ev = false;
- switch (hkey) {
- case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
- case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
- return true;
- case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
- case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- *send_acpi_ev = false;
- return true;
- case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
- case TP_HKEY_EV_LID_OPEN: /* Lid opened */
- case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
- /* do not propagate these events */
- *ignore_acpi_ev = true;
- return true;
- default:
- return false;
- }
- }
- static void thermal_dump_all_sensors(void);
- static bool hotkey_notify_6xxx(const u32 hkey,
- bool *send_acpi_ev,
- bool *ignore_acpi_ev)
- {
- /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
- *send_acpi_ev = true;
- *ignore_acpi_ev = false;
- switch (hkey) {
- case TP_HKEY_EV_THM_TABLE_CHANGED:
- pr_debug("EC reports: Thermal Table has changed\n");
- /* recommended action: do nothing, we don't have
- * Lenovo ATM information */
- return true;
- case TP_HKEY_EV_THM_CSM_COMPLETED:
- pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n");
- /* recommended action: do nothing, we don't have
- * Lenovo ATM information */
- return true;
- case TP_HKEY_EV_THM_TRANSFM_CHANGED:
- pr_debug("EC reports: Thermal Transformation changed (GMTS)\n");
- /* recommended action: do nothing, we don't have
- * Lenovo ATM information */
- return true;
- case TP_HKEY_EV_ALARM_BAT_HOT:
- pr_crit("THERMAL ALARM: battery is too hot!\n");
- /* recommended action: warn user through gui */
- break;
- case TP_HKEY_EV_ALARM_BAT_XHOT:
- pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
- /* recommended action: immediate sleep/hibernate */
- break;
- case TP_HKEY_EV_ALARM_SENSOR_HOT:
- pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n");
- /* recommended action: warn user through gui, that */
- /* some internal component is too hot */
- break;
- case TP_HKEY_EV_ALARM_SENSOR_XHOT:
- pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n");
- /* recommended action: immediate sleep/hibernate */
- break;
- case TP_HKEY_EV_AC_CHANGED:
- /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
- * AC status changed; can be triggered by plugging or
- * unplugging AC adapter, docking or undocking. */
- /* fallthrough */
- case TP_HKEY_EV_KEY_NUMLOCK:
- case TP_HKEY_EV_KEY_FN:
- /* key press events, we just ignore them as long as the EC
- * is still reporting them in the normal keyboard stream */
- *send_acpi_ev = false;
- *ignore_acpi_ev = true;
- return true;
- case TP_HKEY_EV_KEY_FN_ESC:
- /* Get the media key status to foce the status LED to update */
- acpi_evalf(hkey_handle, NULL, "GMKS", "v");
- *send_acpi_ev = false;
- *ignore_acpi_ev = true;
- return true;
- case TP_HKEY_EV_TABLET_CHANGED:
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- *send_acpi_ev = false;
- return true;
- case TP_HKEY_EV_PALM_DETECTED:
- case TP_HKEY_EV_PALM_UNDETECTED:
- /* palm detected hovering the keyboard, forward to user-space
- * via netlink for consumption */
- return true;
- default:
- /* report simply as unknown, no sensor dump */
- return false;
- }
- thermal_dump_all_sensors();
- return true;
- }
- static void hotkey_notify(struct ibm_struct *ibm, u32 event)
- {
- u32 hkey;
- bool send_acpi_ev;
- bool ignore_acpi_ev;
- bool known_ev;
- if (event != 0x80) {
- pr_err("unknown HKEY notification event %d\n", event);
- /* forward it to userspace, maybe it knows how to handle it */
- acpi_bus_generate_netlink_event(
- ibm->acpi->device->pnp.device_class,
- dev_name(&ibm->acpi->device->dev),
- event, 0);
- return;
- }
- while (1) {
- if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
- pr_err("failed to retrieve HKEY event\n");
- return;
- }
- if (hkey == 0) {
- /* queue empty */
- return;
- }
- send_acpi_ev = true;
- ignore_acpi_ev = false;
- switch (hkey >> 12) {
- case 1:
- /* 0x1000-0x1FFF: key presses */
- known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
- &ignore_acpi_ev);
- break;
- case 2:
- /* 0x2000-0x2FFF: Wakeup reason */
- known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
- &ignore_acpi_ev);
- break;
- case 3:
- /* 0x3000-0x3FFF: bay-related wakeups */
- switch (hkey) {
- case TP_HKEY_EV_BAYEJ_ACK:
- hotkey_autosleep_ack = 1;
- pr_info("bay ejected\n");
- hotkey_wakeup_hotunplug_complete_notify_change();
- known_ev = true;
- break;
- case TP_HKEY_EV_OPTDRV_EJ:
- /* FIXME: kick libata if SATA link offline */
- known_ev = true;
- break;
- default:
- known_ev = false;
- }
- break;
- case 4:
- /* 0x4000-0x4FFF: dock-related events */
- known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
- &ignore_acpi_ev);
- break;
- case 5:
- /* 0x5000-0x5FFF: human interface helpers */
- known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
- &ignore_acpi_ev);
- break;
- case 6:
- /* 0x6000-0x6FFF: thermal alarms/notices and
- * keyboard events */
- known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
- &ignore_acpi_ev);
- break;
- case 7:
- /* 0x7000-0x7FFF: misc */
- if (tp_features.hotkey_wlsw &&
- hkey == TP_HKEY_EV_RFKILL_CHANGED) {
- tpacpi_send_radiosw_update();
- send_acpi_ev = 0;
- known_ev = true;
- break;
- }
- /* fallthrough to default */
- default:
- known_ev = false;
- }
- if (!known_ev) {
- pr_notice("unhandled HKEY event 0x%04x\n", hkey);
- pr_notice("please report the conditions when this event happened to %s\n",
- TPACPI_MAIL);
- }
- /* netlink events */
- if (!ignore_acpi_ev && send_acpi_ev) {
- acpi_bus_generate_netlink_event(
- ibm->acpi->device->pnp.device_class,
- dev_name(&ibm->acpi->device->dev),
- event, hkey);
- }
- }
- }
- static void hotkey_suspend(void)
- {
- /* Do these on suspend, we get the events on early resume! */
- hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
- hotkey_autosleep_ack = 0;
- /* save previous mode of adaptive keyboard of X1 Carbon */
- if (tp_features.has_adaptive_kbd) {
- if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
- "GTRW", "dd", 0)) {
- pr_err("Cannot read adaptive keyboard mode.\n");
- }
- }
- }
- static void hotkey_resume(void)
- {
- tpacpi_disable_brightness_delay();
- if (hotkey_status_set(true) < 0 ||
- hotkey_mask_set(hotkey_acpi_mask) < 0)
- pr_err("error while attempting to reset the event firmware interface\n");
- tpacpi_send_radiosw_update();
- tpacpi_input_send_tabletsw();
- hotkey_tablet_mode_notify_change();
- hotkey_wakeup_reason_notify_change();
- hotkey_wakeup_hotunplug_complete_notify_change();
- hotkey_poll_setup_safe(false);
- /* restore previous mode of adapive keyboard of X1 Carbon */
- if (tp_features.has_adaptive_kbd) {
- if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
- adaptive_keyboard_prev_mode)) {
- pr_err("Cannot set adaptive keyboard mode.\n");
- }
- }
- }
- /* procfs -------------------------------------------------------------- */
- static int hotkey_read(struct seq_file *m)
- {
- int res, status;
- if (!tp_features.hotkey) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- res = hotkey_status_get(&status);
- if (!res)
- res = hotkey_mask_get();
- mutex_unlock(&hotkey_mutex);
- if (res)
- return res;
- seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
- if (hotkey_all_mask) {
- seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
- seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
- } else {
- seq_printf(m, "mask:\t\tnot supported\n");
- seq_printf(m, "commands:\tenable, disable, reset\n");
- }
- return 0;
- }
- static void hotkey_enabledisable_warn(bool enable)
- {
- tpacpi_log_usertask("procfs hotkey enable/disable");
- if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
- pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n")))
- pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n");
- }
- static int hotkey_write(char *buf)
- {
- int res;
- u32 mask;
- char *cmd;
- if (!tp_features.hotkey)
- return -ENODEV;
- if (mutex_lock_killable(&hotkey_mutex))
- return -ERESTARTSYS;
- mask = hotkey_user_mask;
- res = 0;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "enable") == 0) {
- hotkey_enabledisable_warn(1);
- } else if (strlencmp(cmd, "disable") == 0) {
- hotkey_enabledisable_warn(0);
- res = -EPERM;
- } else if (strlencmp(cmd, "reset") == 0) {
- mask = (hotkey_all_mask | hotkey_source_mask)
- & ~hotkey_reserved_mask;
- } else if (sscanf(cmd, "0x%x", &mask) == 1) {
- /* mask set */
- } else if (sscanf(cmd, "%x", &mask) == 1) {
- /* mask set */
- } else {
- res = -EINVAL;
- goto errexit;
- }
- }
- if (!res) {
- tpacpi_disclose_usertask("procfs hotkey",
- "set mask to 0x%08x\n", mask);
- res = hotkey_user_mask_set(mask);
- }
- errexit:
- mutex_unlock(&hotkey_mutex);
- return res;
- }
- static const struct acpi_device_id ibm_htk_device_ids[] = {
- {TPACPI_ACPI_IBM_HKEY_HID, 0},
- {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
- {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0},
- {"", 0},
- };
- static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
- .hid = ibm_htk_device_ids,
- .notify = hotkey_notify,
- .handle = &hkey_handle,
- .type = ACPI_DEVICE_NOTIFY,
- };
- static struct ibm_struct hotkey_driver_data = {
- .name = "hotkey",
- .read = hotkey_read,
- .write = hotkey_write,
- .exit = hotkey_exit,
- .resume = hotkey_resume,
- .suspend = hotkey_suspend,
- .acpi = &ibm_hotkey_acpidriver,
- };
- /*************************************************************************
- * Bluetooth subdriver
- */
- enum {
- /* ACPI GBDC/SBDC bits */
- TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
- TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
- TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
- 0 = disable, 1 = enable */
- };
- enum {
- /* ACPI \BLTH commands */
- TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
- TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
- TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
- TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
- TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
- };
- #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
- static int bluetooth_get_status(void)
- {
- int status;
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul)
- return (tpacpi_bluetooth_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- #endif
- if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
- return -EIO;
- return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- }
- static int bluetooth_set_status(enum tpacpi_rfkill_state state)
- {
- int status;
- vdbg_printk(TPACPI_DBG_RFKILL,
- "will attempt to %s bluetooth\n",
- (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul) {
- tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
- #endif
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_BLUETOOTH_RADIOSSW
- | TP_ACPI_BLUETOOTH_RESUMECTRL;
- else
- status = 0;
- if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
- return -EIO;
- return 0;
- }
- /* sysfs bluetooth enable ---------------------------------------------- */
- static ssize_t bluetooth_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
- attr, buf);
- }
- static ssize_t bluetooth_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
- attr, buf, count);
- }
- static DEVICE_ATTR_RW(bluetooth_enable);
- /* --------------------------------------------------------------------- */
- static struct attribute *bluetooth_attributes[] = {
- &dev_attr_bluetooth_enable.attr,
- NULL
- };
- static const struct attribute_group bluetooth_attr_group = {
- .attrs = bluetooth_attributes,
- };
- static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
- .get_status = bluetooth_get_status,
- .set_status = bluetooth_set_status,
- };
- static void bluetooth_shutdown(void)
- {
- /* Order firmware to save current state to NVRAM */
- if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
- TP_ACPI_BLTH_SAVE_STATE))
- pr_notice("failed to save bluetooth state to NVRAM\n");
- else
- vdbg_printk(TPACPI_DBG_RFKILL,
- "bluetooth state saved to NVRAM\n");
- }
- static void bluetooth_exit(void)
- {
- sysfs_remove_group(&tpacpi_pdev->dev.kobj,
- &bluetooth_attr_group);
- tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
- bluetooth_shutdown();
- }
- static const struct dmi_system_id bt_fwbug_list[] __initconst = {
- {
- .ident = "ThinkPad E485",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20KU"),
- },
- },
- {
- .ident = "ThinkPad E585",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20KV"),
- },
- },
- {
- .ident = "ThinkPad A285 - 20MW",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MW"),
- },
- },
- {
- .ident = "ThinkPad A285 - 20MX",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MX"),
- },
- },
- {
- .ident = "ThinkPad A485 - 20MU",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MU"),
- },
- },
- {
- .ident = "ThinkPad A485 - 20MV",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_BOARD_NAME, "20MV"),
- },
- },
- {}
- };
- static const struct pci_device_id fwbug_cards_ids[] __initconst = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) },
- {}
- };
- static int __init have_bt_fwbug(void)
- {
- /*
- * Some AMD based ThinkPads have a firmware bug that calling
- * "GBDC" will cause bluetooth on Intel wireless cards blocked
- */
- if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- FW_BUG "disable bluetooth subdriver for Intel cards\n");
- return 1;
- } else
- return 0;
- }
- static int __init bluetooth_init(struct ibm_init_struct *iibm)
- {
- int res;
- int status = 0;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing bluetooth subdriver\n");
- TPACPI_ACPIHANDLE_INIT(hkey);
- /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
- G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
- tp_features.bluetooth = !have_bt_fwbug() && hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GBDC", "qd");
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "bluetooth is %s, status 0x%02x\n",
- str_supported(tp_features.bluetooth),
- status);
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_bluetoothemul) {
- tp_features.bluetooth = 1;
- pr_info("bluetooth switch emulation enabled\n");
- } else
- #endif
- if (tp_features.bluetooth &&
- !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
- /* no bluetooth hardware present in system */
- tp_features.bluetooth = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "bluetooth hardware not installed\n");
- }
- if (!tp_features.bluetooth)
- return 1;
- res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
- &bluetooth_tprfk_ops,
- RFKILL_TYPE_BLUETOOTH,
- TPACPI_RFK_BLUETOOTH_SW_NAME,
- true);
- if (res)
- return res;
- res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
- &bluetooth_attr_group);
- if (res) {
- tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
- return res;
- }
- return 0;
- }
- /* procfs -------------------------------------------------------------- */
- static int bluetooth_read(struct seq_file *m)
- {
- return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
- }
- static int bluetooth_write(char *buf)
- {
- return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
- }
- static struct ibm_struct bluetooth_driver_data = {
- .name = "bluetooth",
- .read = bluetooth_read,
- .write = bluetooth_write,
- .exit = bluetooth_exit,
- .shutdown = bluetooth_shutdown,
- };
- /*************************************************************************
- * Wan subdriver
- */
- enum {
- /* ACPI GWAN/SWAN bits */
- TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
- TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
- TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
- 0 = disable, 1 = enable */
- };
- #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
- static int wan_get_status(void)
- {
- int status;
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul)
- return (tpacpi_wwan_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- #endif
- if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
- return -EIO;
- return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- }
- static int wan_set_status(enum tpacpi_rfkill_state state)
- {
- int status;
- vdbg_printk(TPACPI_DBG_RFKILL,
- "will attempt to %s wwan\n",
- (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul) {
- tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
- #endif
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_WANCARD_RADIOSSW
- | TP_ACPI_WANCARD_RESUMECTRL;
- else
- status = 0;
- if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
- return -EIO;
- return 0;
- }
- /* sysfs wan enable ---------------------------------------------------- */
- static ssize_t wan_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
- attr, buf);
- }
- static ssize_t wan_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
- attr, buf, count);
- }
- static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO,
- wan_enable_show, wan_enable_store);
- /* --------------------------------------------------------------------- */
- static struct attribute *wan_attributes[] = {
- &dev_attr_wwan_enable.attr,
- NULL
- };
- static const struct attribute_group wan_attr_group = {
- .attrs = wan_attributes,
- };
- static const struct tpacpi_rfk_ops wan_tprfk_ops = {
- .get_status = wan_get_status,
- .set_status = wan_set_status,
- };
- static void wan_shutdown(void)
- {
- /* Order firmware to save current state to NVRAM */
- if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
- TP_ACPI_WGSV_SAVE_STATE))
- pr_notice("failed to save WWAN state to NVRAM\n");
- else
- vdbg_printk(TPACPI_DBG_RFKILL,
- "WWAN state saved to NVRAM\n");
- }
- static void wan_exit(void)
- {
- sysfs_remove_group(&tpacpi_pdev->dev.kobj,
- &wan_attr_group);
- tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
- wan_shutdown();
- }
- static int __init wan_init(struct ibm_init_struct *iibm)
- {
- int res;
- int status = 0;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing wan subdriver\n");
- TPACPI_ACPIHANDLE_INIT(hkey);
- tp_features.wan = hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GWAN", "qd");
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "wan is %s, status 0x%02x\n",
- str_supported(tp_features.wan),
- status);
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wwanemul) {
- tp_features.wan = 1;
- pr_info("wwan switch emulation enabled\n");
- } else
- #endif
- if (tp_features.wan &&
- !(status & TP_ACPI_WANCARD_HWPRESENT)) {
- /* no wan hardware present in system */
- tp_features.wan = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "wan hardware not installed\n");
- }
- if (!tp_features.wan)
- return 1;
- res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
- &wan_tprfk_ops,
- RFKILL_TYPE_WWAN,
- TPACPI_RFK_WWAN_SW_NAME,
- true);
- if (res)
- return res;
- res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
- &wan_attr_group);
- if (res) {
- tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
- return res;
- }
- return 0;
- }
- /* procfs -------------------------------------------------------------- */
- static int wan_read(struct seq_file *m)
- {
- return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
- }
- static int wan_write(char *buf)
- {
- return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
- }
- static struct ibm_struct wan_driver_data = {
- .name = "wan",
- .read = wan_read,
- .write = wan_write,
- .exit = wan_exit,
- .shutdown = wan_shutdown,
- };
- /*************************************************************************
- * UWB subdriver
- */
- enum {
- /* ACPI GUWB/SUWB bits */
- TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
- TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
- };
- #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
- static int uwb_get_status(void)
- {
- int status;
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul)
- return (tpacpi_uwb_emulstate) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- #endif
- if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
- return -EIO;
- return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
- TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
- }
- static int uwb_set_status(enum tpacpi_rfkill_state state)
- {
- int status;
- vdbg_printk(TPACPI_DBG_RFKILL,
- "will attempt to %s UWB\n",
- (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul) {
- tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
- return 0;
- }
- #endif
- if (state == TPACPI_RFK_RADIO_ON)
- status = TP_ACPI_UWB_RADIOSSW;
- else
- status = 0;
- if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
- return -EIO;
- return 0;
- }
- /* --------------------------------------------------------------------- */
- static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
- .get_status = uwb_get_status,
- .set_status = uwb_set_status,
- };
- static void uwb_exit(void)
- {
- tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
- }
- static int __init uwb_init(struct ibm_init_struct *iibm)
- {
- int res;
- int status = 0;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "initializing uwb subdriver\n");
- TPACPI_ACPIHANDLE_INIT(hkey);
- tp_features.uwb = hkey_handle &&
- acpi_evalf(hkey_handle, &status, "GUWB", "qd");
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
- "uwb is %s, status 0x%02x\n",
- str_supported(tp_features.uwb),
- status);
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_uwbemul) {
- tp_features.uwb = 1;
- pr_info("uwb switch emulation enabled\n");
- } else
- #endif
- if (tp_features.uwb &&
- !(status & TP_ACPI_UWB_HWPRESENT)) {
- /* no uwb hardware present in system */
- tp_features.uwb = 0;
- dbg_printk(TPACPI_DBG_INIT,
- "uwb hardware not installed\n");
- }
- if (!tp_features.uwb)
- return 1;
- res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
- &uwb_tprfk_ops,
- RFKILL_TYPE_UWB,
- TPACPI_RFK_UWB_SW_NAME,
- false);
- return res;
- }
- static struct ibm_struct uwb_driver_data = {
- .name = "uwb",
- .exit = uwb_exit,
- .flags.experimental = 1,
- };
- /*************************************************************************
- * Video subdriver
- */
- #ifdef CONFIG_THINKPAD_ACPI_VIDEO
- enum video_access_mode {
- TPACPI_VIDEO_NONE = 0,
- TPACPI_VIDEO_570, /* 570 */
- TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
- TPACPI_VIDEO_NEW, /* all others */
- };
- enum { /* video status flags, based on VIDEO_570 */
- TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
- TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
- TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
- };
- enum { /* TPACPI_VIDEO_570 constants */
- TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
- TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
- * video_status_flags */
- TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
- TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
- };
- static enum video_access_mode video_supported;
- static int video_orig_autosw;
- static int video_autosw_get(void);
- static int video_autosw_set(int enable);
- TPACPI_HANDLE(vid, root,
- "\\_SB.PCI.AGP.VGA", /* 570 */
- "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
- "\\_SB.PCI0.VID0", /* 770e */
- "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
- "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
- "\\_SB.PCI0.AGP.VID", /* all others */
- ); /* R30, R31 */
- TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
- static int __init video_init(struct ibm_init_struct *iibm)
- {
- int ivga;
- vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
- TPACPI_ACPIHANDLE_INIT(vid);
- if (tpacpi_is_ibm())
- TPACPI_ACPIHANDLE_INIT(vid2);
- if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
- /* G41, assume IVGA doesn't change */
- vid_handle = vid2_handle;
- if (!vid_handle)
- /* video switching not supported on R30, R31 */
- video_supported = TPACPI_VIDEO_NONE;
- else if (tpacpi_is_ibm() &&
- acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
- /* 570 */
- video_supported = TPACPI_VIDEO_570;
- else if (tpacpi_is_ibm() &&
- acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
- /* 600e/x, 770e, 770x */
- video_supported = TPACPI_VIDEO_770;
- else
- /* all others */
- video_supported = TPACPI_VIDEO_NEW;
- vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
- str_supported(video_supported != TPACPI_VIDEO_NONE),
- video_supported);
- return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
- }
- static void video_exit(void)
- {
- dbg_printk(TPACPI_DBG_EXIT,
- "restoring original video autoswitch mode\n");
- if (video_autosw_set(video_orig_autosw))
- pr_err("error while trying to restore original video autoswitch mode\n");
- }
- static int video_outputsw_get(void)
- {
- int status = 0;
- int i;
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
- TP_ACPI_VIDEO_570_PHSCMD))
- return -EIO;
- status = i & TP_ACPI_VIDEO_570_PHSMASK;
- break;
- case TPACPI_VIDEO_770:
- if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_LCD;
- if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_CRT;
- break;
- case TPACPI_VIDEO_NEW:
- if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
- !acpi_evalf(NULL, &i, "\\VCDC", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_CRT;
- if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
- !acpi_evalf(NULL, &i, "\\VCDL", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_LCD;
- if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
- return -EIO;
- if (i)
- status |= TP_ACPI_VIDEO_S_DVI;
- break;
- default:
- return -ENOSYS;
- }
- return status;
- }
- static int video_outputsw_set(int status)
- {
- int autosw;
- int res = 0;
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- res = acpi_evalf(NULL, NULL,
- "\\_SB.PHS2", "vdd",
- TP_ACPI_VIDEO_570_PHS2CMD,
- status | TP_ACPI_VIDEO_570_PHS2SET);
- break;
- case TPACPI_VIDEO_770:
- autosw = video_autosw_get();
- if (autosw < 0)
- return autosw;
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(vid_handle, NULL,
- "ASWT", "vdd", status * 0x100, 0);
- if (!autosw && video_autosw_set(autosw)) {
- pr_err("video auto-switch left enabled due to error\n");
- return -EIO;
- }
- break;
- case TPACPI_VIDEO_NEW:
- res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
- acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
- break;
- default:
- return -ENOSYS;
- }
- return (res) ? 0 : -EIO;
- }
- static int video_autosw_get(void)
- {
- int autosw = 0;
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
- return -EIO;
- break;
- case TPACPI_VIDEO_770:
- case TPACPI_VIDEO_NEW:
- if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
- return -EIO;
- break;
- default:
- return -ENOSYS;
- }
- return autosw & 1;
- }
- static int video_autosw_set(int enable)
- {
- if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
- return -EIO;
- return 0;
- }
- static int video_outputsw_cycle(void)
- {
- int autosw = video_autosw_get();
- int res;
- if (autosw < 0)
- return autosw;
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
- break;
- case TPACPI_VIDEO_770:
- case TPACPI_VIDEO_NEW:
- res = video_autosw_set(1);
- if (res)
- return res;
- res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
- break;
- default:
- return -ENOSYS;
- }
- if (!autosw && video_autosw_set(autosw)) {
- pr_err("video auto-switch left enabled due to error\n");
- return -EIO;
- }
- return (res) ? 0 : -EIO;
- }
- static int video_expand_toggle(void)
- {
- switch (video_supported) {
- case TPACPI_VIDEO_570:
- return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
- 0 : -EIO;
- case TPACPI_VIDEO_770:
- return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
- 0 : -EIO;
- case TPACPI_VIDEO_NEW:
- return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
- 0 : -EIO;
- default:
- return -ENOSYS;
- }
- /* not reached */
- }
- static int video_read(struct seq_file *m)
- {
- int status, autosw;
- if (video_supported == TPACPI_VIDEO_NONE) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
- /* Even reads can crash X.org, so... */
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- status = video_outputsw_get();
- if (status < 0)
- return status;
- autosw = video_autosw_get();
- if (autosw < 0)
- return autosw;
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
- seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
- if (video_supported == TPACPI_VIDEO_NEW)
- seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
- seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
- seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
- seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
- if (video_supported == TPACPI_VIDEO_NEW)
- seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
- seq_printf(m, "commands:\tauto_enable, auto_disable\n");
- seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
- return 0;
- }
- static int video_write(char *buf)
- {
- char *cmd;
- int enable, disable, status;
- int res;
- if (video_supported == TPACPI_VIDEO_NONE)
- return -ENODEV;
- /* Even reads can crash X.org, let alone writes... */
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
- enable = 0;
- disable = 0;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "lcd_enable") == 0) {
- enable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strlencmp(cmd, "lcd_disable") == 0) {
- disable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strlencmp(cmd, "crt_enable") == 0) {
- enable |= TP_ACPI_VIDEO_S_CRT;
- } else if (strlencmp(cmd, "crt_disable") == 0) {
- disable |= TP_ACPI_VIDEO_S_CRT;
- } else if (video_supported == TPACPI_VIDEO_NEW &&
- strlencmp(cmd, "dvi_enable") == 0) {
- enable |= TP_ACPI_VIDEO_S_DVI;
- } else if (video_supported == TPACPI_VIDEO_NEW &&
- strlencmp(cmd, "dvi_disable") == 0) {
- disable |= TP_ACPI_VIDEO_S_DVI;
- } else if (strlencmp(cmd, "auto_enable") == 0) {
- res = video_autosw_set(1);
- if (res)
- return res;
- } else if (strlencmp(cmd, "auto_disable") == 0) {
- res = video_autosw_set(0);
- if (res)
- return res;
- } else if (strlencmp(cmd, "video_switch") == 0) {
- res = video_outputsw_cycle();
- if (res)
- return res;
- } else if (strlencmp(cmd, "expand_toggle") == 0) {
- res = video_expand_toggle();
- if (res)
- return res;
- } else
- return -EINVAL;
- }
- if (enable || disable) {
- status = video_outputsw_get();
- if (status < 0)
- return status;
- res = video_outputsw_set((status & ~disable) | enable);
- if (res)
- return res;
- }
- return 0;
- }
- static struct ibm_struct video_driver_data = {
- .name = "video",
- .read = video_read,
- .write = video_write,
- .exit = video_exit,
- };
- #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
- /*************************************************************************
- * Keyboard backlight subdriver
- */
- static enum led_brightness kbdlight_brightness;
- static DEFINE_MUTEX(kbdlight_mutex);
- static int kbdlight_set_level(int level)
- {
- int ret = 0;
- if (!hkey_handle)
- return -ENXIO;
- mutex_lock(&kbdlight_mutex);
- if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level))
- ret = -EIO;
- else
- kbdlight_brightness = level;
- mutex_unlock(&kbdlight_mutex);
- return ret;
- }
- static int kbdlight_get_level(void)
- {
- int status = 0;
- if (!hkey_handle)
- return -ENXIO;
- if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0))
- return -EIO;
- if (status < 0)
- return status;
- return status & 0x3;
- }
- static bool kbdlight_is_supported(void)
- {
- int status = 0;
- if (!hkey_handle)
- return false;
- if (!acpi_has_method(hkey_handle, "MLCG")) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n");
- return false;
- }
- if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n");
- return false;
- }
- if (status < 0) {
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status);
- return false;
- }
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status);
- /*
- * Guessed test for keyboard backlight:
- *
- * Machines with backlight keyboard return:
- * b010100000010000000XX - ThinkPad X1 Carbon 3rd
- * b110100010010000000XX - ThinkPad x230
- * b010100000010000000XX - ThinkPad x240
- * b010100000010000000XX - ThinkPad W541
- * (XX is current backlight level)
- *
- * Machines without backlight keyboard return:
- * b10100001000000000000 - ThinkPad x230
- * b10110001000000000000 - ThinkPad E430
- * b00000000000000000000 - ThinkPad E450
- *
- * Candidate BITs for detection test (XOR):
- * b01000000001000000000
- * ^
- */
- return status & BIT(9);
- }
- static int kbdlight_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
- {
- return kbdlight_set_level(brightness);
- }
- static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev)
- {
- int level;
- level = kbdlight_get_level();
- if (level < 0)
- return 0;
- return level;
- }
- static struct tpacpi_led_classdev tpacpi_led_kbdlight = {
- .led_classdev = {
- .name = "tpacpi::kbd_backlight",
- .max_brightness = 2,
- .flags = LED_BRIGHT_HW_CHANGED,
- .brightness_set_blocking = &kbdlight_sysfs_set,
- .brightness_get = &kbdlight_sysfs_get,
- }
- };
- static int __init kbdlight_init(struct ibm_init_struct *iibm)
- {
- int rc;
- vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n");
- TPACPI_ACPIHANDLE_INIT(hkey);
- if (!kbdlight_is_supported()) {
- tp_features.kbdlight = 0;
- vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n");
- return 1;
- }
- kbdlight_brightness = kbdlight_sysfs_get(NULL);
- tp_features.kbdlight = 1;
- rc = led_classdev_register(&tpacpi_pdev->dev,
- &tpacpi_led_kbdlight.led_classdev);
- if (rc < 0) {
- tp_features.kbdlight = 0;
- return rc;
- }
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask |
- TP_ACPI_HKEY_KBD_LIGHT_MASK);
- return 0;
- }
- static void kbdlight_exit(void)
- {
- if (tp_features.kbdlight)
- led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev);
- }
- static int kbdlight_set_level_and_update(int level)
- {
- int ret;
- struct led_classdev *led_cdev;
- ret = kbdlight_set_level(level);
- led_cdev = &tpacpi_led_kbdlight.led_classdev;
- if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED))
- led_cdev->brightness = level;
- return ret;
- }
- static int kbdlight_read(struct seq_file *m)
- {
- int level;
- if (!tp_features.kbdlight) {
- seq_printf(m, "status:\t\tnot supported\n");
- } else {
- level = kbdlight_get_level();
- if (level < 0)
- seq_printf(m, "status:\t\terror %d\n", level);
- else
- seq_printf(m, "status:\t\t%d\n", level);
- seq_printf(m, "commands:\t0, 1, 2\n");
- }
- return 0;
- }
- static int kbdlight_write(char *buf)
- {
- char *cmd;
- int level = -1;
- if (!tp_features.kbdlight)
- return -ENODEV;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "0") == 0)
- level = 0;
- else if (strlencmp(cmd, "1") == 0)
- level = 1;
- else if (strlencmp(cmd, "2") == 0)
- level = 2;
- else
- return -EINVAL;
- }
- if (level == -1)
- return -EINVAL;
- return kbdlight_set_level_and_update(level);
- }
- static void kbdlight_suspend(void)
- {
- struct led_classdev *led_cdev;
- if (!tp_features.kbdlight)
- return;
- led_cdev = &tpacpi_led_kbdlight.led_classdev;
- led_update_brightness(led_cdev);
- led_classdev_suspend(led_cdev);
- }
- static void kbdlight_resume(void)
- {
- if (!tp_features.kbdlight)
- return;
- led_classdev_resume(&tpacpi_led_kbdlight.led_classdev);
- }
- static struct ibm_struct kbdlight_driver_data = {
- .name = "kbdlight",
- .read = kbdlight_read,
- .write = kbdlight_write,
- .suspend = kbdlight_suspend,
- .resume = kbdlight_resume,
- .exit = kbdlight_exit,
- };
- /*************************************************************************
- * Light (thinklight) subdriver
- */
- TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
- TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
- static int light_get_status(void)
- {
- int status = 0;
- if (tp_features.light_status) {
- if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
- return -EIO;
- return (!!status);
- }
- return -ENXIO;
- }
- static int light_set_status(int status)
- {
- int rc;
- if (tp_features.light) {
- if (cmos_handle) {
- rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
- (status) ?
- TP_CMOS_THINKLIGHT_ON :
- TP_CMOS_THINKLIGHT_OFF);
- } else {
- rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
- (status) ? 1 : 0);
- }
- return (rc) ? 0 : -EIO;
- }
- return -ENXIO;
- }
- static int light_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
- {
- return light_set_status((brightness != LED_OFF) ?
- TPACPI_LED_ON : TPACPI_LED_OFF);
- }
- static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
- {
- return (light_get_status() == 1) ? LED_FULL : LED_OFF;
- }
- static struct tpacpi_led_classdev tpacpi_led_thinklight = {
- .led_classdev = {
- .name = "tpacpi::thinklight",
- .brightness_set_blocking = &light_sysfs_set,
- .brightness_get = &light_sysfs_get,
- }
- };
- static int __init light_init(struct ibm_init_struct *iibm)
- {
- int rc;
- vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
- if (tpacpi_is_ibm()) {
- TPACPI_ACPIHANDLE_INIT(ledb);
- TPACPI_ACPIHANDLE_INIT(lght);
- }
- TPACPI_ACPIHANDLE_INIT(cmos);
- /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
- tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
- if (tp_features.light)
- /* light status not supported on
- 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
- tp_features.light_status =
- acpi_evalf(ec_handle, NULL, "KBLT", "qv");
- vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
- str_supported(tp_features.light),
- str_supported(tp_features.light_status));
- if (!tp_features.light)
- return 1;
- rc = led_classdev_register(&tpacpi_pdev->dev,
- &tpacpi_led_thinklight.led_classdev);
- if (rc < 0) {
- tp_features.light = 0;
- tp_features.light_status = 0;
- } else {
- rc = 0;
- }
- return rc;
- }
- static void light_exit(void)
- {
- led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
- }
- static int light_read(struct seq_file *m)
- {
- int status;
- if (!tp_features.light) {
- seq_printf(m, "status:\t\tnot supported\n");
- } else if (!tp_features.light_status) {
- seq_printf(m, "status:\t\tunknown\n");
- seq_printf(m, "commands:\ton, off\n");
- } else {
- status = light_get_status();
- if (status < 0)
- return status;
- seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
- seq_printf(m, "commands:\ton, off\n");
- }
- return 0;
- }
- static int light_write(char *buf)
- {
- char *cmd;
- int newstatus = 0;
- if (!tp_features.light)
- return -ENODEV;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "on") == 0) {
- newstatus = 1;
- } else if (strlencmp(cmd, "off") == 0) {
- newstatus = 0;
- } else
- return -EINVAL;
- }
- return light_set_status(newstatus);
- }
- static struct ibm_struct light_driver_data = {
- .name = "light",
- .read = light_read,
- .write = light_write,
- .exit = light_exit,
- };
- /*************************************************************************
- * CMOS subdriver
- */
- /* sysfs cmos_command -------------------------------------------------- */
- static ssize_t cmos_command_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long cmos_cmd;
- int res;
- if (parse_strtoul(buf, 21, &cmos_cmd))
- return -EINVAL;
- res = issue_thinkpad_cmos_command(cmos_cmd);
- return (res) ? res : count;
- }
- static DEVICE_ATTR_WO(cmos_command);
- /* --------------------------------------------------------------------- */
- static int __init cmos_init(struct ibm_init_struct *iibm)
- {
- int res;
- vdbg_printk(TPACPI_DBG_INIT,
- "initializing cmos commands subdriver\n");
- TPACPI_ACPIHANDLE_INIT(cmos);
- vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
- str_supported(cmos_handle != NULL));
- res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
- if (res)
- return res;
- return (cmos_handle) ? 0 : 1;
- }
- static void cmos_exit(void)
- {
- device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
- }
- static int cmos_read(struct seq_file *m)
- {
- /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
- R30, R31, T20-22, X20-21 */
- if (!cmos_handle)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
- }
- return 0;
- }
- static int cmos_write(char *buf)
- {
- char *cmd;
- int cmos_cmd, res;
- while ((cmd = next_cmd(&buf))) {
- if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
- cmos_cmd >= 0 && cmos_cmd <= 21) {
- /* cmos_cmd set */
- } else
- return -EINVAL;
- res = issue_thinkpad_cmos_command(cmos_cmd);
- if (res)
- return res;
- }
- return 0;
- }
- static struct ibm_struct cmos_driver_data = {
- .name = "cmos",
- .read = cmos_read,
- .write = cmos_write,
- .exit = cmos_exit,
- };
- /*************************************************************************
- * LED subdriver
- */
- enum led_access_mode {
- TPACPI_LED_NONE = 0,
- TPACPI_LED_570, /* 570 */
- TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
- TPACPI_LED_NEW, /* all others */
- };
- enum { /* For TPACPI_LED_OLD */
- TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
- TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
- TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
- };
- static enum led_access_mode led_supported;
- static acpi_handle led_handle;
- #define TPACPI_LED_NUMLEDS 16
- static struct tpacpi_led_classdev *tpacpi_leds;
- static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
- static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
- /* there's a limit of 19 chars + NULL before 2.6.26 */
- "tpacpi::power",
- "tpacpi:orange:batt",
- "tpacpi:green:batt",
- "tpacpi::dock_active",
- "tpacpi::bay_active",
- "tpacpi::dock_batt",
- "tpacpi::unknown_led",
- "tpacpi::standby",
- "tpacpi::dock_status1",
- "tpacpi::dock_status2",
- "tpacpi::unknown_led2",
- "tpacpi::unknown_led3",
- "tpacpi::thinkvantage",
- };
- #define TPACPI_SAFE_LEDS 0x1081U
- static inline bool tpacpi_is_led_restricted(const unsigned int led)
- {
- #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
- return false;
- #else
- return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
- #endif
- }
- static int led_get_status(const unsigned int led)
- {
- int status;
- enum led_status_t led_s;
- switch (led_supported) {
- case TPACPI_LED_570:
- if (!acpi_evalf(ec_handle,
- &status, "GLED", "dd", 1 << led))
- return -EIO;
- led_s = (status == 0) ?
- TPACPI_LED_OFF :
- ((status == 1) ?
- TPACPI_LED_ON :
- TPACPI_LED_BLINK);
- tpacpi_led_state_cache[led] = led_s;
- return led_s;
- default:
- return -ENXIO;
- }
- /* not reached */
- }
- static int led_set_status(const unsigned int led,
- const enum led_status_t ledstatus)
- {
- /* off, on, blink. Index is led_status_t */
- static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
- static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
- int rc = 0;
- switch (led_supported) {
- case TPACPI_LED_570:
- /* 570 */
- if (unlikely(led > 7))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
- (1 << led), led_sled_arg1[ledstatus]))
- rc = -EIO;
- break;
- case TPACPI_LED_OLD:
- /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
- if (unlikely(led > 7))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
- if (rc >= 0)
- rc = ec_write(TPACPI_LED_EC_HLBL,
- (ledstatus == TPACPI_LED_BLINK) << led);
- if (rc >= 0)
- rc = ec_write(TPACPI_LED_EC_HLCL,
- (ledstatus != TPACPI_LED_OFF) << led);
- break;
- case TPACPI_LED_NEW:
- /* all others */
- if (unlikely(led >= TPACPI_LED_NUMLEDS))
- return -EINVAL;
- if (unlikely(tpacpi_is_led_restricted(led)))
- return -EPERM;
- if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
- led, led_led_arg1[ledstatus]))
- rc = -EIO;
- break;
- default:
- rc = -ENXIO;
- }
- if (!rc)
- tpacpi_led_state_cache[led] = ledstatus;
- return rc;
- }
- static int led_sysfs_set(struct led_classdev *led_cdev,
- enum led_brightness brightness)
- {
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
- enum led_status_t new_state;
- if (brightness == LED_OFF)
- new_state = TPACPI_LED_OFF;
- else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
- new_state = TPACPI_LED_ON;
- else
- new_state = TPACPI_LED_BLINK;
- return led_set_status(data->led, new_state);
- }
- static int led_sysfs_blink_set(struct led_classdev *led_cdev,
- unsigned long *delay_on, unsigned long *delay_off)
- {
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
- /* Can we choose the flash rate? */
- if (*delay_on == 0 && *delay_off == 0) {
- /* yes. set them to the hardware blink rate (1 Hz) */
- *delay_on = 500; /* ms */
- *delay_off = 500; /* ms */
- } else if ((*delay_on != 500) || (*delay_off != 500))
- return -EINVAL;
- return led_set_status(data->led, TPACPI_LED_BLINK);
- }
- static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
- {
- int rc;
- struct tpacpi_led_classdev *data = container_of(led_cdev,
- struct tpacpi_led_classdev, led_classdev);
- rc = led_get_status(data->led);
- if (rc == TPACPI_LED_OFF || rc < 0)
- rc = LED_OFF; /* no error handling in led class :( */
- else
- rc = LED_FULL;
- return rc;
- }
- static void led_exit(void)
- {
- unsigned int i;
- for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
- if (tpacpi_leds[i].led_classdev.name)
- led_classdev_unregister(&tpacpi_leds[i].led_classdev);
- }
- kfree(tpacpi_leds);
- }
- static int __init tpacpi_init_led(unsigned int led)
- {
- int rc;
- tpacpi_leds[led].led = led;
- /* LEDs with no name don't get registered */
- if (!tpacpi_led_names[led])
- return 0;
- tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set;
- tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
- if (led_supported == TPACPI_LED_570)
- tpacpi_leds[led].led_classdev.brightness_get =
- &led_sysfs_get;
- tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
- rc = led_classdev_register(&tpacpi_pdev->dev,
- &tpacpi_leds[led].led_classdev);
- if (rc < 0)
- tpacpi_leds[led].led_classdev.name = NULL;
- return rc;
- }
- static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
- TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
- TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
- TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
- TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
- TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
- TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
- TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
- TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
- TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
- TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
- TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
- TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
- TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
- TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
- TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
- TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
- TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
- TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
- TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
- TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
- /* (1) - may have excess leds enabled on MSB */
- /* Defaults (order matters, keep last, don't reorder!) */
- { /* Lenovo */
- .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = 0x1fffU,
- },
- { /* IBM ThinkPads with no EC version string */
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
- .quirks = 0x00ffU,
- },
- { /* IBM ThinkPads with EC version string */
- .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
- .quirks = 0x00bfU,
- },
- };
- #undef TPACPI_LEDQ_IBM
- #undef TPACPI_LEDQ_LNV
- static enum led_access_mode __init led_init_detect_mode(void)
- {
- acpi_status status;
- if (tpacpi_is_ibm()) {
- /* 570 */
- status = acpi_get_handle(ec_handle, "SLED", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_570;
- /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
- status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_OLD;
- }
- /* most others */
- status = acpi_get_handle(ec_handle, "LED", &led_handle);
- if (ACPI_SUCCESS(status))
- return TPACPI_LED_NEW;
- /* R30, R31, and unknown firmwares */
- led_handle = NULL;
- return TPACPI_LED_NONE;
- }
- static int __init led_init(struct ibm_init_struct *iibm)
- {
- unsigned int i;
- int rc;
- unsigned long useful_leds;
- vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
- led_supported = led_init_detect_mode();
- if (led_supported != TPACPI_LED_NONE) {
- useful_leds = tpacpi_check_quirks(led_useful_qtable,
- ARRAY_SIZE(led_useful_qtable));
- if (!useful_leds) {
- led_handle = NULL;
- led_supported = TPACPI_LED_NONE;
- }
- }
- vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
- str_supported(led_supported), led_supported);
- if (led_supported == TPACPI_LED_NONE)
- return 1;
- tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds),
- GFP_KERNEL);
- if (!tpacpi_leds) {
- pr_err("Out of memory for LED data\n");
- return -ENOMEM;
- }
- for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
- tpacpi_leds[i].led = -1;
- if (!tpacpi_is_led_restricted(i) &&
- test_bit(i, &useful_leds)) {
- rc = tpacpi_init_led(i);
- if (rc < 0) {
- led_exit();
- return rc;
- }
- }
- }
- #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
- pr_notice("warning: userspace override of important firmware LEDs is enabled\n");
- #endif
- return 0;
- }
- #define str_led_status(s) \
- ((s) == TPACPI_LED_OFF ? "off" : \
- ((s) == TPACPI_LED_ON ? "on" : "blinking"))
- static int led_read(struct seq_file *m)
- {
- if (!led_supported) {
- seq_printf(m, "status:\t\tnot supported\n");
- return 0;
- }
- seq_printf(m, "status:\t\tsupported\n");
- if (led_supported == TPACPI_LED_570) {
- /* 570 */
- int i, status;
- for (i = 0; i < 8; i++) {
- status = led_get_status(i);
- if (status < 0)
- return -EIO;
- seq_printf(m, "%d:\t\t%s\n",
- i, str_led_status(status));
- }
- }
- seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n");
- return 0;
- }
- static int led_write(char *buf)
- {
- char *cmd;
- int led, rc;
- enum led_status_t s;
- if (!led_supported)
- return -ENODEV;
- while ((cmd = next_cmd(&buf))) {
- if (sscanf(cmd, "%d", &led) != 1)
- return -EINVAL;
- if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
- tpacpi_leds[led].led < 0)
- return -ENODEV;
- if (strstr(cmd, "off")) {
- s = TPACPI_LED_OFF;
- } else if (strstr(cmd, "on")) {
- s = TPACPI_LED_ON;
- } else if (strstr(cmd, "blink")) {
- s = TPACPI_LED_BLINK;
- } else {
- return -EINVAL;
- }
- rc = led_set_status(led, s);
- if (rc < 0)
- return rc;
- }
- return 0;
- }
- static struct ibm_struct led_driver_data = {
- .name = "led",
- .read = led_read,
- .write = led_write,
- .exit = led_exit,
- };
- /*************************************************************************
- * Beep subdriver
- */
- TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
- #define TPACPI_BEEP_Q1 0x0001
- static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
- TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
- TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
- };
- static int __init beep_init(struct ibm_init_struct *iibm)
- {
- unsigned long quirks;
- vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
- TPACPI_ACPIHANDLE_INIT(beep);
- vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
- str_supported(beep_handle != NULL));
- quirks = tpacpi_check_quirks(beep_quirk_table,
- ARRAY_SIZE(beep_quirk_table));
- tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
- return (beep_handle) ? 0 : 1;
- }
- static int beep_read(struct seq_file *m)
- {
- if (!beep_handle)
- seq_printf(m, "status:\t\tnot supported\n");
- else {
- seq_printf(m, "status:\t\tsupported\n");
- seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
- }
- return 0;
- }
- static int beep_write(char *buf)
- {
- char *cmd;
- int beep_cmd;
- if (!beep_handle)
- return -ENODEV;
- while ((cmd = next_cmd(&buf))) {
- if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
- beep_cmd >= 0 && beep_cmd <= 17) {
- /* beep_cmd set */
- } else
- return -EINVAL;
- if (tp_features.beep_needs_two_args) {
- if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
- beep_cmd, 0))
- return -EIO;
- } else {
- if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
- beep_cmd))
- return -EIO;
- }
- }
- return 0;
- }
- static struct ibm_struct beep_driver_data = {
- .name = "beep",
- .read = beep_read,
- .write = beep_write,
- };
- /*************************************************************************
- * Thermal subdriver
- */
- enum thermal_access_mode {
- TPACPI_THERMAL_NONE = 0, /* No thermal support */
- TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
- TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
- TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
- TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
- };
- enum { /* TPACPI_THERMAL_TPEC_* */
- TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
- TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
- TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */
- TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
- TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
- };
- #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
- struct ibm_thermal_sensors_struct {
- s32 temp[TPACPI_MAX_THERMAL_SENSORS];
- };
- static enum thermal_access_mode thermal_read_mode;
- /* idx is zero-based */
- static int thermal_get_sensor(int idx, s32 *value)
- {
- int t;
- s8 tmp;
- char tmpi[5];
- t = TP_EC_THERMAL_TMP0;
- switch (thermal_read_mode) {
- #if TPACPI_MAX_THERMAL_SENSORS >= 16
- case TPACPI_THERMAL_TPEC_16:
- if (idx >= 8 && idx <= 15) {
- t = TP_EC_THERMAL_TMP8;
- idx -= 8;
- }
- /* fallthrough */
- #endif
- case TPACPI_THERMAL_TPEC_8:
- if (idx <= 7) {
- if (!acpi_ec_read(t + idx, &tmp))
- return -EIO;
- *value = tmp * 1000;
- return 0;
- }
- break;
- case TPACPI_THERMAL_ACPI_UPDT:
- if (idx <= 7) {
- snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
- if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
- return -EIO;
- if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
- return -EIO;
- *value = (t - 2732) * 100;
- return 0;
- }
- break;
- case TPACPI_THERMAL_ACPI_TMP07:
- if (idx <= 7) {
- snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
- if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
- return -EIO;
- if (t > 127 || t < -127)
- t = TP_EC_THERMAL_TMP_NA;
- *value = t * 1000;
- return 0;
- }
- break;
- case TPACPI_THERMAL_NONE:
- default:
- return -ENOSYS;
- }
- return -EINVAL;
- }
- static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
- {
- int res, i;
- int n;
- n = 8;
- i = 0;
- if (!s)
- return -EINVAL;
- if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
- n = 16;
- for (i = 0 ; i < n; i++) {
- res = thermal_get_sensor(i, &s->temp[i]);
- if (res)
- return res;
- }
- return n;
- }
- static void thermal_dump_all_sensors(void)
- {
- int n, i;
- struct ibm_thermal_sensors_struct t;
- n = thermal_get_sensors(&t);
- if (n <= 0)
- return;
- pr_notice("temperatures (Celsius):");
- for (i = 0; i < n; i++) {
- if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
- pr_cont(" %d", (int)(t.temp[i] / 1000));
- else
- pr_cont(" N/A");
- }
- pr_cont("\n");
- }
- /* sysfs temp##_input -------------------------------------------------- */
- static ssize_t thermal_temp_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- struct sensor_device_attribute *sensor_attr =
- to_sensor_dev_attr(attr);
- int idx = sensor_attr->index;
- s32 value;
- int res;
- res = thermal_get_sensor(idx, &value);
- if (res)
- return res;
- if (value == TPACPI_THERMAL_SENSOR_NA)
- return -ENXIO;
- return snprintf(buf, PAGE_SIZE, "%d\n", value);
- }
- #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
- SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
- thermal_temp_input_show, NULL, _idxB)
- static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
- THERMAL_SENSOR_ATTR_TEMP(1, 0),
- THERMAL_SENSOR_ATTR_TEMP(2, 1),
- THERMAL_SENSOR_ATTR_TEMP(3, 2),
- THERMAL_SENSOR_ATTR_TEMP(4, 3),
- THERMAL_SENSOR_ATTR_TEMP(5, 4),
- THERMAL_SENSOR_ATTR_TEMP(6, 5),
- THERMAL_SENSOR_ATTR_TEMP(7, 6),
- THERMAL_SENSOR_ATTR_TEMP(8, 7),
- THERMAL_SENSOR_ATTR_TEMP(9, 8),
- THERMAL_SENSOR_ATTR_TEMP(10, 9),
- THERMAL_SENSOR_ATTR_TEMP(11, 10),
- THERMAL_SENSOR_ATTR_TEMP(12, 11),
- THERMAL_SENSOR_ATTR_TEMP(13, 12),
- THERMAL_SENSOR_ATTR_TEMP(14, 13),
- THERMAL_SENSOR_ATTR_TEMP(15, 14),
- THERMAL_SENSOR_ATTR_TEMP(16, 15),
- };
- #define THERMAL_ATTRS(X) \
- &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
- static struct attribute *thermal_temp_input_attr[] = {
- THERMAL_ATTRS(8),
- THERMAL_ATTRS(9),
- THERMAL_ATTRS(10),
- THERMAL_ATTRS(11),
- THERMAL_ATTRS(12),
- THERMAL_ATTRS(13),
- THERMAL_ATTRS(14),
- THERMAL_ATTRS(15),
- THERMAL_ATTRS(0),
- THERMAL_ATTRS(1),
- THERMAL_ATTRS(2),
- THERMAL_ATTRS(3),
- THERMAL_ATTRS(4),
- THERMAL_ATTRS(5),
- THERMAL_ATTRS(6),
- THERMAL_ATTRS(7),
- NULL
- };
- static const struct attribute_group thermal_temp_input16_group = {
- .attrs = thermal_temp_input_attr
- };
- static const struct attribute_group thermal_temp_input8_group = {
- .attrs = &thermal_temp_input_attr[8]
- };
- #undef THERMAL_SENSOR_ATTR_TEMP
- #undef THERMAL_ATTRS
- /* --------------------------------------------------------------------- */
- static int __init thermal_init(struct ibm_init_struct *iibm)
- {
- u8 t, ta1, ta2, ver = 0;
- int i;
- int acpi_tmp7;
- int res;
- vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
- acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
- if (thinkpad_id.ec_model) {
- /*
- * Direct EC access mode: sensors at registers
- * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
- * non-implemented, thermal sensors return 0x80 when
- * not available
- * The above rule is unfortunately flawed. This has been seen with
- * 0xC2 (power supply ID) causing thermal control problems.
- * The EC version can be determined by offset 0xEF and at least for
- * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7
- * are not thermal registers.
- */
- if (!acpi_ec_read(TP_EC_FUNCREV, &ver))
- pr_warn("Thinkpad ACPI EC unable to access EC version\n");
- ta1 = ta2 = 0;
- for (i = 0; i < 8; i++) {
- if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
- ta1 |= t;
- } else {
- ta1 = 0;
- break;
- }
- if (ver < 3) {
- if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
- ta2 |= t;
- } else {
- ta1 = 0;
- break;
- }
- }
- }
- if (ta1 == 0) {
- /* This is sheer paranoia, but we handle it anyway */
- if (acpi_tmp7) {
- pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n");
- thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
- } else {
- pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n");
- thermal_read_mode = TPACPI_THERMAL_NONE;
- }
- } else {
- if (ver >= 3)
- thermal_read_mode = TPACPI_THERMAL_TPEC_8;
- else
- thermal_read_mode =
- (ta2 != 0) ?
- TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
- }
- } else if (acpi_tmp7) {
- if (tpacpi_is_ibm() &&
- acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
- /* 600e/x, 770e, 770x */
- thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
- } else {
- /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
- thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
- }
- } else {
- /* temperatures not supported on 570, G4x, R30, R31, R32 */
- thermal_read_mode = TPACPI_THERMAL_NONE;
- }
- vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
- str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
- thermal_read_mode);
- switch (thermal_read_mode) {
- case TPACPI_THERMAL_TPEC_16:
- res = sysfs_create_group(&tpacpi_hwmon->kobj,
- &thermal_temp_input16_group);
- if (res)
- return res;
- break;
- case TPACPI_THERMAL_TPEC_8:
- case TPACPI_THERMAL_ACPI_TMP07:
- case TPACPI_THERMAL_ACPI_UPDT:
- res = sysfs_create_group(&tpacpi_hwmon->kobj,
- &thermal_temp_input8_group);
- if (res)
- return res;
- break;
- case TPACPI_THERMAL_NONE:
- default:
- return 1;
- }
- return 0;
- }
- static void thermal_exit(void)
- {
- switch (thermal_read_mode) {
- case TPACPI_THERMAL_TPEC_16:
- sysfs_remove_group(&tpacpi_hwmon->kobj,
- &thermal_temp_input16_group);
- break;
- case TPACPI_THERMAL_TPEC_8:
- case TPACPI_THERMAL_ACPI_TMP07:
- case TPACPI_THERMAL_ACPI_UPDT:
- sysfs_remove_group(&tpacpi_hwmon->kobj,
- &thermal_temp_input8_group);
- break;
- case TPACPI_THERMAL_NONE:
- default:
- break;
- }
- }
- static int thermal_read(struct seq_file *m)
- {
- int n, i;
- struct ibm_thermal_sensors_struct t;
- n = thermal_get_sensors(&t);
- if (unlikely(n < 0))
- return n;
- seq_printf(m, "temperatures:\t");
- if (n > 0) {
- for (i = 0; i < (n - 1); i++)
- seq_printf(m, "%d ", t.temp[i] / 1000);
- seq_printf(m, "%d\n", t.temp[i] / 1000);
- } else
- seq_printf(m, "not supported\n");
- return 0;
- }
- static struct ibm_struct thermal_driver_data = {
- .name = "thermal",
- .read = thermal_read,
- .exit = thermal_exit,
- };
- /*************************************************************************
- * Backlight/brightness subdriver
- */
- #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
- /*
- * ThinkPads can read brightness from two places: EC HBRV (0x31), or
- * CMOS NVRAM byte 0x5E, bits 0-3.
- *
- * EC HBRV (0x31) has the following layout
- * Bit 7: unknown function
- * Bit 6: unknown function
- * Bit 5: Z: honour scale changes, NZ: ignore scale changes
- * Bit 4: must be set to zero to avoid problems
- * Bit 3-0: backlight brightness level
- *
- * brightness_get_raw returns status data in the HBRV layout
- *
- * WARNING: The X61 has been verified to use HBRV for something else, so
- * this should be used _only_ on IBM ThinkPads, and maybe with some careful
- * testing on the very early *60 Lenovo models...
- */
- enum {
- TP_EC_BACKLIGHT = 0x31,
- /* TP_EC_BACKLIGHT bitmasks */
- TP_EC_BACKLIGHT_LVLMSK = 0x1F,
- TP_EC_BACKLIGHT_CMDMSK = 0xE0,
- TP_EC_BACKLIGHT_MAPSW = 0x20,
- };
- enum tpacpi_brightness_access_mode {
- TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
- TPACPI_BRGHT_MODE_EC, /* EC control */
- TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
- TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
- TPACPI_BRGHT_MODE_MAX
- };
- static struct backlight_device *ibm_backlight_device;
- static enum tpacpi_brightness_access_mode brightness_mode =
- TPACPI_BRGHT_MODE_MAX;
- static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
- static struct mutex brightness_mutex;
- /* NVRAM brightness access,
- * call with brightness_mutex held! */
- static unsigned int tpacpi_brightness_nvram_get(void)
- {
- u8 lnvram;
- lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
- & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
- lnvram &= bright_maxlvl;
- return lnvram;
- }
- static void tpacpi_brightness_checkpoint_nvram(void)
- {
- u8 lec = 0;
- u8 b_nvram;
- if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
- return;
- vdbg_printk(TPACPI_DBG_BRGHT,
- "trying to checkpoint backlight level to NVRAM...\n");
- if (mutex_lock_killable(&brightness_mutex) < 0)
- return;
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- goto unlock;
- lec &= TP_EC_BACKLIGHT_LVLMSK;
- b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
- if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
- >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
- /* NVRAM needs update */
- b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
- TP_NVRAM_POS_LEVEL_BRIGHTNESS);
- b_nvram |= lec;
- nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
- dbg_printk(TPACPI_DBG_BRGHT,
- "updated NVRAM backlight level to %u (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- } else
- vdbg_printk(TPACPI_DBG_BRGHT,
- "NVRAM backlight level already is %u (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- unlock:
- mutex_unlock(&brightness_mutex);
- }
- /* call with brightness_mutex held! */
- static int tpacpi_brightness_get_raw(int *status)
- {
- u8 lec = 0;
- switch (brightness_mode) {
- case TPACPI_BRGHT_MODE_UCMS_STEP:
- *status = tpacpi_brightness_nvram_get();
- return 0;
- case TPACPI_BRGHT_MODE_EC:
- case TPACPI_BRGHT_MODE_ECNVRAM:
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- return -EIO;
- *status = lec;
- return 0;
- default:
- return -ENXIO;
- }
- }
- /* call with brightness_mutex held! */
- /* do NOT call with illegal backlight level value */
- static int tpacpi_brightness_set_ec(unsigned int value)
- {
- u8 lec = 0;
- if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
- return -EIO;
- if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
- (lec & TP_EC_BACKLIGHT_CMDMSK) |
- (value & TP_EC_BACKLIGHT_LVLMSK))))
- return -EIO;
- return 0;
- }
- /* call with brightness_mutex held! */
- static int tpacpi_brightness_set_ucmsstep(unsigned int value)
- {
- int cmos_cmd, inc;
- unsigned int current_value, i;
- current_value = tpacpi_brightness_nvram_get();
- if (value == current_value)
- return 0;
- cmos_cmd = (value > current_value) ?
- TP_CMOS_BRIGHTNESS_UP :
- TP_CMOS_BRIGHTNESS_DOWN;
- inc = (value > current_value) ? 1 : -1;
- for (i = current_value; i != value; i += inc)
- if (issue_thinkpad_cmos_command(cmos_cmd))
- return -EIO;
- return 0;
- }
- /* May return EINTR which can always be mapped to ERESTARTSYS */
- static int brightness_set(unsigned int value)
- {
- int res;
- if (value > bright_maxlvl)
- return -EINVAL;
- vdbg_printk(TPACPI_DBG_BRGHT,
- "set backlight level to %d\n", value);
- res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
- return res;
- switch (brightness_mode) {
- case TPACPI_BRGHT_MODE_EC:
- case TPACPI_BRGHT_MODE_ECNVRAM:
- res = tpacpi_brightness_set_ec(value);
- break;
- case TPACPI_BRGHT_MODE_UCMS_STEP:
- res = tpacpi_brightness_set_ucmsstep(value);
- break;
- default:
- res = -ENXIO;
- }
- mutex_unlock(&brightness_mutex);
- return res;
- }
- /* sysfs backlight class ----------------------------------------------- */
- static int brightness_update_status(struct backlight_device *bd)
- {
- unsigned int level =
- (bd->props.fb_blank == FB_BLANK_UNBLANK &&
- bd->props.power == FB_BLANK_UNBLANK) ?
- bd->props.brightness : 0;
- dbg_printk(TPACPI_DBG_BRGHT,
- "backlight: attempt to set level to %d\n",
- level);
- /* it is the backlight class's job (caller) to handle
- * EINTR and other errors properly */
- return brightness_set(level);
- }
- static int brightness_get(struct backlight_device *bd)
- {
- int status, res;
- res = mutex_lock_killable(&brightness_mutex);
- if (res < 0)
- return 0;
- res = tpacpi_brightness_get_raw(&status);
- mutex_unlock(&brightness_mutex);
- if (res < 0)
- return 0;
- return status & TP_EC_BACKLIGHT_LVLMSK;
- }
- static void tpacpi_brightness_notify_change(void)
- {
- backlight_force_update(ibm_backlight_device,
- BACKLIGHT_UPDATE_HOTKEY);
- }
- static const struct backlight_ops ibm_backlight_data = {
- .get_brightness = brightness_get,
- .update_status = brightness_update_status,
- };
- /* --------------------------------------------------------------------- */
- /*
- * Call _BCL method of video device. On some ThinkPads this will
- * switch the firmware to the ACPI brightness control mode.
- */
- static int __init tpacpi_query_bcl_levels(acpi_handle handle)
- {
- struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
- union acpi_object *obj;
- struct acpi_device *device, *child;
- int rc;
- if (acpi_bus_get_device(handle, &device))
- return 0;
- rc = 0;
- list_for_each_entry(child, &device->children, node) {
- acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
- NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- buffer.length = ACPI_ALLOCATE_BUFFER;
- continue;
- }
- obj = (union acpi_object *)buffer.pointer;
- if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
- pr_err("Unknown _BCL data, please report this to %s\n",
- TPACPI_MAIL);
- rc = 0;
- } else {
- rc = obj->package.count;
- }
- break;
- }
- kfree(buffer.pointer);
- return rc;
- }
- /*
- * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
- */
- static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
- {
- acpi_handle video_device;
- int bcl_levels = 0;
- tpacpi_acpi_handle_locate("video", NULL, &video_device);
- if (video_device)
- bcl_levels = tpacpi_query_bcl_levels(video_device);
- tp_features.bright_acpimode = (bcl_levels > 0);
- return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
- }
- /*
- * These are only useful for models that have only one possibility
- * of GPU. If the BIOS model handles both ATI and Intel, don't use
- * these quirks.
- */
- #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
- #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
- #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
- static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
- /* Models with ATI GPUs known to require ECNVRAM mode */
- TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
- /* Models with ATI GPUs that can use ECNVRAM */
- TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
- TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
- TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- /* Models with Intel Extreme Graphics 2 */
- TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
- TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
- /* Models with Intel GMA900 */
- TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
- TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
- TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
- };
- /*
- * Returns < 0 for error, otherwise sets tp_features.bright_*
- * and bright_maxlvl.
- */
- static void __init tpacpi_detect_brightness_capabilities(void)
- {
- unsigned int b;
- vdbg_printk(TPACPI_DBG_INIT,
- "detecting firmware brightness interface capabilities\n");
- /* we could run a quirks check here (same table used by
- * brightness_init) if needed */
- /*
- * We always attempt to detect acpi support, so as to switch
- * Lenovo Vista BIOS to ACPI brightness mode even if we are not
- * going to publish a backlight interface
- */
- b = tpacpi_check_std_acpi_brightness_support();
- switch (b) {
- case 16:
- bright_maxlvl = 15;
- break;
- case 8:
- case 0:
- bright_maxlvl = 7;
- break;
- default:
- tp_features.bright_unkfw = 1;
- bright_maxlvl = b - 1;
- }
- pr_debug("detected %u brightness levels\n", bright_maxlvl + 1);
- }
- static int __init brightness_init(struct ibm_init_struct *iibm)
- {
- struct backlight_properties props;
- int b;
- unsigned long quirks;
- vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
- mutex_init(&brightness_mutex);
- quirks = tpacpi_check_quirks(brightness_quirk_table,
- ARRAY_SIZE(brightness_quirk_table));
- /* tpacpi_detect_brightness_capabilities() must have run already */
- /* if it is unknown, we don't handle it: it wouldn't be safe */
- if (tp_features.bright_unkfw)
- return 1;
- if (!brightness_enable) {
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness support disabled by module parameter\n");
- return 1;
- }
- if (acpi_video_get_backlight_type() != acpi_backlight_vendor) {
- if (brightness_enable > 1) {
- pr_info("Standard ACPI backlight interface available, not loading native one\n");
- return 1;
- } else if (brightness_enable == 1) {
- pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n");
- return 1;
- }
- } else if (tp_features.bright_acpimode && brightness_enable > 1) {
- pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n");
- }
- /*
- * Check for module parameter bogosity, note that we
- * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
- * able to detect "unspecified"
- */
- if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
- return -EINVAL;
- /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
- if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
- brightness_mode == TPACPI_BRGHT_MODE_MAX) {
- if (quirks & TPACPI_BRGHT_Q_EC)
- brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
- else
- brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
- dbg_printk(TPACPI_DBG_BRGHT,
- "driver auto-selected brightness_mode=%d\n",
- brightness_mode);
- }
- /* Safety */
- if (!tpacpi_is_ibm() &&
- (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
- brightness_mode == TPACPI_BRGHT_MODE_EC))
- return -EINVAL;
- if (tpacpi_brightness_get_raw(&b) < 0)
- return 1;
- memset(&props, 0, sizeof(struct backlight_properties));
- props.type = BACKLIGHT_PLATFORM;
- props.max_brightness = bright_maxlvl;
- props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
- ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
- NULL, NULL,
- &ibm_backlight_data,
- &props);
- if (IS_ERR(ibm_backlight_device)) {
- int rc = PTR_ERR(ibm_backlight_device);
- ibm_backlight_device = NULL;
- pr_err("Could not register backlight device\n");
- return rc;
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness is supported\n");
- if (quirks & TPACPI_BRGHT_Q_ASK) {
- pr_notice("brightness: will use unverified default: brightness_mode=%d\n",
- brightness_mode);
- pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n",
- TPACPI_MAIL);
- }
- /* Added by mistake in early 2007. Probably useless, but it could
- * be working around some unknown firmware problem where the value
- * read at startup doesn't match the real hardware state... so leave
- * it in place just in case */
- backlight_update_status(ibm_backlight_device);
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
- "brightness: registering brightness hotkeys as change notification\n");
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
- | TP_ACPI_HKEY_BRGHTUP_MASK
- | TP_ACPI_HKEY_BRGHTDWN_MASK);
- return 0;
- }
- static void brightness_suspend(void)
- {
- tpacpi_brightness_checkpoint_nvram();
- }
- static void brightness_shutdown(void)
- {
- tpacpi_brightness_checkpoint_nvram();
- }
- static void brightness_exit(void)
- {
- if (ibm_backlight_device) {
- vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
- "calling backlight_device_unregister()\n");
- backlight_device_unregister(ibm_backlight_device);
- }
- tpacpi_brightness_checkpoint_nvram();
- }
- static int brightness_read(struct seq_file *m)
- {
- int level;
- level = brightness_get(NULL);
- if (level < 0) {
- seq_printf(m, "level:\t\tunreadable\n");
- } else {
- seq_printf(m, "level:\t\t%d\n", level);
- seq_printf(m, "commands:\tup, down\n");
- seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
- bright_maxlvl);
- }
- return 0;
- }
- static int brightness_write(char *buf)
- {
- int level;
- int rc;
- char *cmd;
- level = brightness_get(NULL);
- if (level < 0)
- return level;
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "up") == 0) {
- if (level < bright_maxlvl)
- level++;
- } else if (strlencmp(cmd, "down") == 0) {
- if (level > 0)
- level--;
- } else if (sscanf(cmd, "level %d", &level) == 1 &&
- level >= 0 && level <= bright_maxlvl) {
- /* new level set */
- } else
- return -EINVAL;
- }
- tpacpi_disclose_usertask("procfs brightness",
- "set level to %d\n", level);
- /*
- * Now we know what the final level should be, so we try to set it.
- * Doing it this way makes the syscall restartable in case of EINTR
- */
- rc = brightness_set(level);
- if (!rc && ibm_backlight_device)
- backlight_force_update(ibm_backlight_device,
- BACKLIGHT_UPDATE_SYSFS);
- return (rc == -EINTR) ? -ERESTARTSYS : rc;
- }
- static struct ibm_struct brightness_driver_data = {
- .name = "brightness",
- .read = brightness_read,
- .write = brightness_write,
- .exit = brightness_exit,
- .suspend = brightness_suspend,
- .shutdown = brightness_shutdown,
- };
- /*************************************************************************
- * Volume subdriver
- */
- /*
- * IBM ThinkPads have a simple volume controller with MUTE gating.
- * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
- *
- * Since the *61 series (and probably also the later *60 series), Lenovo
- * ThinkPads only implement the MUTE gate.
- *
- * EC register 0x30
- * Bit 6: MUTE (1 mutes sound)
- * Bit 3-0: Volume
- * Other bits should be zero as far as we know.
- *
- * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
- * bits 3-0 (volume). Other bits in NVRAM may have other functions,
- * such as bit 7 which is used to detect repeated presses of MUTE,
- * and we leave them unchanged.
- *
- * On newer Lenovo ThinkPads, the EC can automatically change the volume
- * in response to user input. Unfortunately, this rarely works well.
- * The laptop changes the state of its internal MUTE gate and, on some
- * models, sends KEY_MUTE, causing any user code that responds to the
- * mute button to get confused. The hardware MUTE gate is also
- * unnecessary, since user code can handle the mute button without
- * kernel or EC help.
- *
- * To avoid confusing userspace, we simply disable all EC-based mute
- * and volume controls when possible.
- */
- #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
- #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
- #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
- #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
- #if SNDRV_CARDS <= 32
- #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
- #else
- #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
- #endif
- static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
- static char *alsa_id = "ThinkPadEC";
- static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
- struct tpacpi_alsa_data {
- struct snd_card *card;
- struct snd_ctl_elem_id *ctl_mute_id;
- struct snd_ctl_elem_id *ctl_vol_id;
- };
- static struct snd_card *alsa_card;
- enum {
- TP_EC_AUDIO = 0x30,
- /* TP_EC_AUDIO bits */
- TP_EC_AUDIO_MUTESW = 6,
- /* TP_EC_AUDIO bitmasks */
- TP_EC_AUDIO_LVL_MSK = 0x0F,
- TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
- /* Maximum volume */
- TP_EC_VOLUME_MAX = 14,
- };
- enum tpacpi_volume_access_mode {
- TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
- TPACPI_VOL_MODE_EC, /* Pure EC control */
- TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
- TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
- TPACPI_VOL_MODE_MAX
- };
- enum tpacpi_volume_capabilities {
- TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
- TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
- TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
- TPACPI_VOL_CAP_MAX
- };
- enum tpacpi_mute_btn_mode {
- TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
- /* We don't know what mode 1 is. */
- TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
- TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
- };
- static enum tpacpi_volume_access_mode volume_mode =
- TPACPI_VOL_MODE_MAX;
- static enum tpacpi_volume_capabilities volume_capabilities;
- static bool volume_control_allowed;
- static bool software_mute_requested = true;
- static bool software_mute_active;
- static int software_mute_orig_mode;
- /*
- * Used to syncronize writers to TP_EC_AUDIO and
- * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
- */
- static struct mutex volume_mutex;
- static void tpacpi_volume_checkpoint_nvram(void)
- {
- u8 lec = 0;
- u8 b_nvram;
- u8 ec_mask;
- if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
- return;
- if (!volume_control_allowed)
- return;
- if (software_mute_active)
- return;
- vdbg_printk(TPACPI_DBG_MIXER,
- "trying to checkpoint mixer state to NVRAM...\n");
- if (tp_features.mixer_no_level_control)
- ec_mask = TP_EC_AUDIO_MUTESW_MSK;
- else
- ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
- if (mutex_lock_killable(&volume_mutex) < 0)
- return;
- if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
- goto unlock;
- lec &= ec_mask;
- b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
- if (lec != (b_nvram & ec_mask)) {
- /* NVRAM needs update */
- b_nvram &= ~ec_mask;
- b_nvram |= lec;
- nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
- dbg_printk(TPACPI_DBG_MIXER,
- "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- } else {
- vdbg_printk(TPACPI_DBG_MIXER,
- "NVRAM mixer status already is 0x%02x (0x%02x)\n",
- (unsigned int) lec, (unsigned int) b_nvram);
- }
- unlock:
- mutex_unlock(&volume_mutex);
- }
- static int volume_get_status_ec(u8 *status)
- {
- u8 s;
- if (!acpi_ec_read(TP_EC_AUDIO, &s))
- return -EIO;
- *status = s;
- dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
- return 0;
- }
- static int volume_get_status(u8 *status)
- {
- return volume_get_status_ec(status);
- }
- static int volume_set_status_ec(const u8 status)
- {
- if (!acpi_ec_write(TP_EC_AUDIO, status))
- return -EIO;
- dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
- /*
- * On X200s, and possibly on others, it can take a while for
- * reads to become correct.
- */
- msleep(1);
- return 0;
- }
- static int volume_set_status(const u8 status)
- {
- return volume_set_status_ec(status);
- }
- /* returns < 0 on error, 0 on no change, 1 on change */
- static int __volume_set_mute_ec(const bool mute)
- {
- int rc;
- u8 s, n;
- if (mutex_lock_killable(&volume_mutex) < 0)
- return -EINTR;
- rc = volume_get_status_ec(&s);
- if (rc)
- goto unlock;
- n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
- s & ~TP_EC_AUDIO_MUTESW_MSK;
- if (n != s) {
- rc = volume_set_status_ec(n);
- if (!rc)
- rc = 1;
- }
- unlock:
- mutex_unlock(&volume_mutex);
- return rc;
- }
- static int volume_alsa_set_mute(const bool mute)
- {
- dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
- (mute) ? "" : "un");
- return __volume_set_mute_ec(mute);
- }
- static int volume_set_mute(const bool mute)
- {
- int rc;
- dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
- (mute) ? "" : "un");
- rc = __volume_set_mute_ec(mute);
- return (rc < 0) ? rc : 0;
- }
- /* returns < 0 on error, 0 on no change, 1 on change */
- static int __volume_set_volume_ec(const u8 vol)
- {
- int rc;
- u8 s, n;
- if (vol > TP_EC_VOLUME_MAX)
- return -EINVAL;
- if (mutex_lock_killable(&volume_mutex) < 0)
- return -EINTR;
- rc = volume_get_status_ec(&s);
- if (rc)
- goto unlock;
- n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
- if (n != s) {
- rc = volume_set_status_ec(n);
- if (!rc)
- rc = 1;
- }
- unlock:
- mutex_unlock(&volume_mutex);
- return rc;
- }
- static int volume_set_software_mute(bool startup)
- {
- int result;
- if (!tpacpi_is_lenovo())
- return -ENODEV;
- if (startup) {
- if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
- "HAUM", "qd"))
- return -EIO;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "Initial HAUM setting was %d\n",
- software_mute_orig_mode);
- }
- if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
- (int)TP_EC_MUTE_BTN_NONE))
- return -EIO;
- if (result != TP_EC_MUTE_BTN_NONE)
- pr_warn("Unexpected SAUM result %d\n",
- result);
- /*
- * In software mute mode, the standard codec controls take
- * precendence, so we unmute the ThinkPad HW switch at
- * startup. Just on case there are SAUM-capable ThinkPads
- * with level controls, set max HW volume as well.
- */
- if (tp_features.mixer_no_level_control)
- result = volume_set_mute(false);
- else
- result = volume_set_status(TP_EC_VOLUME_MAX);
- if (result != 0)
- pr_warn("Failed to unmute the HW mute switch\n");
- return 0;
- }
- static void volume_exit_software_mute(void)
- {
- int r;
- if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
- || r != software_mute_orig_mode)
- pr_warn("Failed to restore mute mode\n");
- }
- static int volume_alsa_set_volume(const u8 vol)
- {
- dbg_printk(TPACPI_DBG_MIXER,
- "ALSA: trying to set volume level to %hu\n", vol);
- return __volume_set_volume_ec(vol);
- }
- static void volume_alsa_notify_change(void)
- {
- struct tpacpi_alsa_data *d;
- if (alsa_card && alsa_card->private_data) {
- d = alsa_card->private_data;
- if (d->ctl_mute_id)
- snd_ctl_notify(alsa_card,
- SNDRV_CTL_EVENT_MASK_VALUE,
- d->ctl_mute_id);
- if (d->ctl_vol_id)
- snd_ctl_notify(alsa_card,
- SNDRV_CTL_EVENT_MASK_VALUE,
- d->ctl_vol_id);
- }
- }
- static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_info *uinfo)
- {
- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
- uinfo->count = 1;
- uinfo->value.integer.min = 0;
- uinfo->value.integer.max = TP_EC_VOLUME_MAX;
- return 0;
- }
- static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- u8 s;
- int rc;
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
- ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
- return 0;
- }
- static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
- ucontrol->value.integer.value[0]);
- return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
- }
- #define volume_alsa_mute_info snd_ctl_boolean_mono_info
- static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- u8 s;
- int rc;
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
- ucontrol->value.integer.value[0] =
- (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
- return 0;
- }
- static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
- {
- tpacpi_disclose_usertask("ALSA", "%smute\n",
- ucontrol->value.integer.value[0] ?
- "un" : "");
- return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
- }
- static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Console Playback Volume",
- .index = 0,
- .access = SNDRV_CTL_ELEM_ACCESS_READ,
- .info = volume_alsa_vol_info,
- .get = volume_alsa_vol_get,
- };
- static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Console Playback Switch",
- .index = 0,
- .access = SNDRV_CTL_ELEM_ACCESS_READ,
- .info = volume_alsa_mute_info,
- .get = volume_alsa_mute_get,
- };
- static void volume_suspend(void)
- {
- tpacpi_volume_checkpoint_nvram();
- }
- static void volume_resume(void)
- {
- if (software_mute_active) {
- if (volume_set_software_mute(false) < 0)
- pr_warn("Failed to restore software mute\n");
- } else {
- volume_alsa_notify_change();
- }
- }
- static void volume_shutdown(void)
- {
- tpacpi_volume_checkpoint_nvram();
- }
- static void volume_exit(void)
- {
- if (alsa_card) {
- snd_card_free(alsa_card);
- alsa_card = NULL;
- }
- tpacpi_volume_checkpoint_nvram();
- if (software_mute_active)
- volume_exit_software_mute();
- }
- static int __init volume_create_alsa_mixer(void)
- {
- struct snd_card *card;
- struct tpacpi_alsa_data *data;
- struct snd_kcontrol *ctl_vol;
- struct snd_kcontrol *ctl_mute;
- int rc;
- rc = snd_card_new(&tpacpi_pdev->dev,
- alsa_index, alsa_id, THIS_MODULE,
- sizeof(struct tpacpi_alsa_data), &card);
- if (rc < 0 || !card) {
- pr_err("Failed to create ALSA card structures: %d\n", rc);
- return 1;
- }
- BUG_ON(!card->private_data);
- data = card->private_data;
- data->card = card;
- strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
- sizeof(card->driver));
- strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
- sizeof(card->shortname));
- snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "(unknown)");
- snprintf(card->longname, sizeof(card->longname),
- "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "unknown");
- if (volume_control_allowed) {
- volume_alsa_control_vol.put = volume_alsa_vol_put;
- volume_alsa_control_vol.access =
- SNDRV_CTL_ELEM_ACCESS_READWRITE;
- volume_alsa_control_mute.put = volume_alsa_mute_put;
- volume_alsa_control_mute.access =
- SNDRV_CTL_ELEM_ACCESS_READWRITE;
- }
- if (!tp_features.mixer_no_level_control) {
- ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
- rc = snd_ctl_add(card, ctl_vol);
- if (rc < 0) {
- pr_err("Failed to create ALSA volume control: %d\n",
- rc);
- goto err_exit;
- }
- data->ctl_vol_id = &ctl_vol->id;
- }
- ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
- rc = snd_ctl_add(card, ctl_mute);
- if (rc < 0) {
- pr_err("Failed to create ALSA mute control: %d\n", rc);
- goto err_exit;
- }
- data->ctl_mute_id = &ctl_mute->id;
- rc = snd_card_register(card);
- if (rc < 0) {
- pr_err("Failed to register ALSA card: %d\n", rc);
- goto err_exit;
- }
- alsa_card = card;
- return 0;
- err_exit:
- snd_card_free(card);
- return 1;
- }
- #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
- #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
- static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
- /* Whitelist volume level on all IBM by default */
- { .vendor = PCI_VENDOR_ID_IBM,
- .bios = TPACPI_MATCH_ANY,
- .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_VOL_Q_LEVEL },
- /* Lenovo models with volume control (needs confirmation) */
- TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
- TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
- TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
- TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
- TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
- TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
- TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
- /* Whitelist mute-only on all Lenovo by default */
- { .vendor = PCI_VENDOR_ID_LENOVO,
- .bios = TPACPI_MATCH_ANY,
- .ec = TPACPI_MATCH_ANY,
- .quirks = TPACPI_VOL_Q_MUTEONLY }
- };
- static int __init volume_init(struct ibm_init_struct *iibm)
- {
- unsigned long quirks;
- int rc;
- vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
- mutex_init(&volume_mutex);
- /*
- * Check for module parameter bogosity, note that we
- * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
- * able to detect "unspecified"
- */
- if (volume_mode > TPACPI_VOL_MODE_MAX)
- return -EINVAL;
- if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
- pr_err("UCMS step volume mode not implemented, please contact %s\n",
- TPACPI_MAIL);
- return 1;
- }
- if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
- return -EINVAL;
- /*
- * The ALSA mixer is our primary interface.
- * When disabled, don't install the subdriver at all
- */
- if (!alsa_enable) {
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "ALSA mixer disabled by parameter, not loading volume subdriver...\n");
- return 1;
- }
- quirks = tpacpi_check_quirks(volume_quirk_table,
- ARRAY_SIZE(volume_quirk_table));
- switch (volume_capabilities) {
- case TPACPI_VOL_CAP_AUTO:
- if (quirks & TPACPI_VOL_Q_MUTEONLY)
- tp_features.mixer_no_level_control = 1;
- else if (quirks & TPACPI_VOL_Q_LEVEL)
- tp_features.mixer_no_level_control = 0;
- else
- return 1; /* no mixer */
- break;
- case TPACPI_VOL_CAP_VOLMUTE:
- tp_features.mixer_no_level_control = 0;
- break;
- case TPACPI_VOL_CAP_MUTEONLY:
- tp_features.mixer_no_level_control = 1;
- break;
- default:
- return 1;
- }
- if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "using user-supplied volume_capabilities=%d\n",
- volume_capabilities);
- if (volume_mode == TPACPI_VOL_MODE_AUTO ||
- volume_mode == TPACPI_VOL_MODE_MAX) {
- volume_mode = TPACPI_VOL_MODE_ECNVRAM;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "driver auto-selected volume_mode=%d\n",
- volume_mode);
- } else {
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "using user-supplied volume_mode=%d\n",
- volume_mode);
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "mute is supported, volume control is %s\n",
- str_supported(!tp_features.mixer_no_level_control));
- if (software_mute_requested && volume_set_software_mute(true) == 0) {
- software_mute_active = true;
- } else {
- rc = volume_create_alsa_mixer();
- if (rc) {
- pr_err("Could not create the ALSA mixer interface\n");
- return rc;
- }
- pr_info("Console audio control enabled, mode: %s\n",
- (volume_control_allowed) ?
- "override (read/write)" :
- "monitor (read only)");
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
- "registering volume hotkeys as change notification\n");
- tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
- | TP_ACPI_HKEY_VOLUP_MASK
- | TP_ACPI_HKEY_VOLDWN_MASK
- | TP_ACPI_HKEY_MUTE_MASK);
- return 0;
- }
- static int volume_read(struct seq_file *m)
- {
- u8 status;
- if (volume_get_status(&status) < 0) {
- seq_printf(m, "level:\t\tunreadable\n");
- } else {
- if (tp_features.mixer_no_level_control)
- seq_printf(m, "level:\t\tunsupported\n");
- else
- seq_printf(m, "level:\t\t%d\n",
- status & TP_EC_AUDIO_LVL_MSK);
- seq_printf(m, "mute:\t\t%s\n",
- onoff(status, TP_EC_AUDIO_MUTESW));
- if (volume_control_allowed) {
- seq_printf(m, "commands:\tunmute, mute\n");
- if (!tp_features.mixer_no_level_control) {
- seq_printf(m, "commands:\tup, down\n");
- seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
- TP_EC_VOLUME_MAX);
- }
- }
- }
- return 0;
- }
- static int volume_write(char *buf)
- {
- u8 s;
- u8 new_level, new_mute;
- int l;
- char *cmd;
- int rc;
- /*
- * We do allow volume control at driver startup, so that the
- * user can set initial state through the volume=... parameter hack.
- */
- if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
- if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
- tp_warned.volume_ctrl_forbidden = 1;
- pr_notice("Console audio control in monitor mode, changes are not allowed\n");
- pr_notice("Use the volume_control=1 module parameter to enable volume control\n");
- }
- return -EPERM;
- }
- rc = volume_get_status(&s);
- if (rc < 0)
- return rc;
- new_level = s & TP_EC_AUDIO_LVL_MSK;
- new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
- while ((cmd = next_cmd(&buf))) {
- if (!tp_features.mixer_no_level_control) {
- if (strlencmp(cmd, "up") == 0) {
- if (new_mute)
- new_mute = 0;
- else if (new_level < TP_EC_VOLUME_MAX)
- new_level++;
- continue;
- } else if (strlencmp(cmd, "down") == 0) {
- if (new_mute)
- new_mute = 0;
- else if (new_level > 0)
- new_level--;
- continue;
- } else if (sscanf(cmd, "level %u", &l) == 1 &&
- l >= 0 && l <= TP_EC_VOLUME_MAX) {
- new_level = l;
- continue;
- }
- }
- if (strlencmp(cmd, "mute") == 0)
- new_mute = TP_EC_AUDIO_MUTESW_MSK;
- else if (strlencmp(cmd, "unmute") == 0)
- new_mute = 0;
- else
- return -EINVAL;
- }
- if (tp_features.mixer_no_level_control) {
- tpacpi_disclose_usertask("procfs volume", "%smute\n",
- new_mute ? "" : "un");
- rc = volume_set_mute(!!new_mute);
- } else {
- tpacpi_disclose_usertask("procfs volume",
- "%smute and set level to %d\n",
- new_mute ? "" : "un", new_level);
- rc = volume_set_status(new_mute | new_level);
- }
- volume_alsa_notify_change();
- return (rc == -EINTR) ? -ERESTARTSYS : rc;
- }
- static struct ibm_struct volume_driver_data = {
- .name = "volume",
- .read = volume_read,
- .write = volume_write,
- .exit = volume_exit,
- .suspend = volume_suspend,
- .resume = volume_resume,
- .shutdown = volume_shutdown,
- };
- #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
- #define alsa_card NULL
- static inline void volume_alsa_notify_change(void)
- {
- }
- static int __init volume_init(struct ibm_init_struct *iibm)
- {
- pr_info("volume: disabled as there is no ALSA support in this kernel\n");
- return 1;
- }
- static struct ibm_struct volume_driver_data = {
- .name = "volume",
- };
- #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
- /*************************************************************************
- * Fan subdriver
- */
- /*
- * FAN ACCESS MODES
- *
- * TPACPI_FAN_RD_ACPI_GFAN:
- * ACPI GFAN method: returns fan level
- *
- * see TPACPI_FAN_WR_ACPI_SFAN
- * EC 0x2f (HFSP) not available if GFAN exists
- *
- * TPACPI_FAN_WR_ACPI_SFAN:
- * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
- *
- * EC 0x2f (HFSP) might be available *for reading*, but do not use
- * it for writing.
- *
- * TPACPI_FAN_WR_TPEC:
- * ThinkPad EC register 0x2f (HFSP): fan control loop mode
- * Supported on almost all ThinkPads
- *
- * Fan speed changes of any sort (including those caused by the
- * disengaged mode) are usually done slowly by the firmware as the
- * maximum amount of fan duty cycle change per second seems to be
- * limited.
- *
- * Reading is not available if GFAN exists.
- * Writing is not available if SFAN exists.
- *
- * Bits
- * 7 automatic mode engaged;
- * (default operation mode of the ThinkPad)
- * fan level is ignored in this mode.
- * 6 full speed mode (takes precedence over bit 7);
- * not available on all thinkpads. May disable
- * the tachometer while the fan controller ramps up
- * the speed (which can take up to a few *minutes*).
- * Speeds up fan to 100% duty-cycle, which is far above
- * the standard RPM levels. It is not impossible that
- * it could cause hardware damage.
- * 5-3 unused in some models. Extra bits for fan level
- * in others, but still useless as all values above
- * 7 map to the same speed as level 7 in these models.
- * 2-0 fan level (0..7 usually)
- * 0x00 = stop
- * 0x07 = max (set when temperatures critical)
- * Some ThinkPads may have other levels, see
- * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
- *
- * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
- * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
- * does so, its initial value is meaningless (0x07).
- *
- * For firmware bugs, refer to:
- * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
- *
- * ----
- *
- * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
- * Main fan tachometer reading (in RPM)
- *
- * This register is present on all ThinkPads with a new-style EC, and
- * it is known not to be present on the A21m/e, and T22, as there is
- * something else in offset 0x84 according to the ACPI DSDT. Other
- * ThinkPads from this same time period (and earlier) probably lack the
- * tachometer as well.
- *
- * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
- * was never fixed by IBM to report the EC firmware version string
- * probably support the tachometer (like the early X models), so
- * detecting it is quite hard. We need more data to know for sure.
- *
- * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
- * might result.
- *
- * FIRMWARE BUG: may go stale while the EC is switching to full speed
- * mode.
- *
- * For firmware bugs, refer to:
- * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
- *
- * ----
- *
- * ThinkPad EC register 0x31 bit 0 (only on select models)
- *
- * When bit 0 of EC register 0x31 is zero, the tachometer registers
- * show the speed of the main fan. When bit 0 of EC register 0x31
- * is one, the tachometer registers show the speed of the auxiliary
- * fan.
- *
- * Fan control seems to affect both fans, regardless of the state
- * of this bit.
- *
- * So far, only the firmware for the X60/X61 non-tablet versions
- * seem to support this (firmware TP-7M).
- *
- * TPACPI_FAN_WR_ACPI_FANS:
- * ThinkPad X31, X40, X41. Not available in the X60.
- *
- * FANS ACPI handle: takes three arguments: low speed, medium speed,
- * high speed. ACPI DSDT seems to map these three speeds to levels
- * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
- * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
- *
- * The speeds are stored on handles
- * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
- *
- * There are three default speed sets, accessible as handles:
- * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
- *
- * ACPI DSDT switches which set is in use depending on various
- * factors.
- *
- * TPACPI_FAN_WR_TPEC is also available and should be used to
- * command the fan. The X31/X40/X41 seems to have 8 fan levels,
- * but the ACPI tables just mention level 7.
- */
- enum { /* Fan control constants */
- fan_status_offset = 0x2f, /* EC register 0x2f */
- fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
- * 0x84 must be read before 0x85 */
- fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
- bit 0 selects which fan is active */
- TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
- TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
- TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
- };
- enum fan_status_access_mode {
- TPACPI_FAN_NONE = 0, /* No fan status or control */
- TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
- TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
- };
- enum fan_control_access_mode {
- TPACPI_FAN_WR_NONE = 0, /* No fan control */
- TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
- TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
- TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
- };
- enum fan_control_commands {
- TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
- TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
- TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
- * and also watchdog cmd */
- };
- static bool fan_control_allowed;
- static enum fan_status_access_mode fan_status_access_mode;
- static enum fan_control_access_mode fan_control_access_mode;
- static enum fan_control_commands fan_control_commands;
- static u8 fan_control_initial_status;
- static u8 fan_control_desired_level;
- static u8 fan_control_resume_level;
- static int fan_watchdog_maxinterval;
- static struct mutex fan_mutex;
- static void fan_watchdog_fire(struct work_struct *ignored);
- static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
- TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
- TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
- "\\FSPD", /* 600e/x, 770e, 770x */
- ); /* all others */
- TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
- "JFNS", /* 770x-JL */
- ); /* all others */
- /*
- * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
- * HFSP register at boot, so it contains 0x07 but the Thinkpad could
- * be in auto mode (0x80).
- *
- * This is corrected by any write to HFSP either by the driver, or
- * by the firmware.
- *
- * We assume 0x07 really means auto mode while this quirk is active,
- * as this is far more likely than the ThinkPad being in level 7,
- * which is only used by the firmware during thermal emergencies.
- *
- * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
- * TP-70 (T43, R52), which are known to be buggy.
- */
- static void fan_quirk1_setup(void)
- {
- if (fan_control_initial_status == 0x07) {
- pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n");
- tp_features.fan_ctrl_status_undef = 1;
- }
- }
- static void fan_quirk1_handle(u8 *fan_status)
- {
- if (unlikely(tp_features.fan_ctrl_status_undef)) {
- if (*fan_status != fan_control_initial_status) {
- /* something changed the HFSP regisnter since
- * driver init time, so it is not undefined
- * anymore */
- tp_features.fan_ctrl_status_undef = 0;
- } else {
- /* Return most likely status. In fact, it
- * might be the only possible status */
- *fan_status = TP_EC_FAN_AUTO;
- }
- }
- }
- /* Select main fan on X60/X61, NOOP on others */
- static bool fan_select_fan1(void)
- {
- if (tp_features.second_fan) {
- u8 val;
- if (ec_read(fan_select_offset, &val) < 0)
- return false;
- val &= 0xFEU;
- if (ec_write(fan_select_offset, val) < 0)
- return false;
- }
- return true;
- }
- /* Select secondary fan on X60/X61 */
- static bool fan_select_fan2(void)
- {
- u8 val;
- if (!tp_features.second_fan)
- return false;
- if (ec_read(fan_select_offset, &val) < 0)
- return false;
- val |= 0x01U;
- if (ec_write(fan_select_offset, val) < 0)
- return false;
- return true;
- }
- /*
- * Call with fan_mutex held
- */
- static void fan_update_desired_level(u8 status)
- {
- if ((status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
- if (status > 7)
- fan_control_desired_level = 7;
- else
- fan_control_desired_level = status;
- }
- }
- static int fan_get_status(u8 *status)
- {
- u8 s;
- /* TODO:
- * Add TPACPI_FAN_RD_ACPI_FANS ? */
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_ACPI_GFAN: {
- /* 570, 600e/x, 770e, 770x */
- int res;
- if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
- return -EIO;
- if (likely(status))
- *status = res & 0x07;
- break;
- }
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
- return -EIO;
- if (likely(status)) {
- *status = s;
- fan_quirk1_handle(status);
- }
- break;
- default:
- return -ENXIO;
- }
- return 0;
- }
- static int fan_get_status_safe(u8 *status)
- {
- int rc;
- u8 s;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- rc = fan_get_status(&s);
- if (!rc)
- fan_update_desired_level(s);
- mutex_unlock(&fan_mutex);
- if (rc)
- return rc;
- if (status)
- *status = s;
- return 0;
- }
- static int fan_get_speed(unsigned int *speed)
- {
- u8 hi, lo;
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!fan_select_fan1()))
- return -EIO;
- if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
- !acpi_ec_read(fan_rpm_offset + 1, &hi)))
- return -EIO;
- if (likely(speed))
- *speed = (hi << 8) | lo;
- break;
- default:
- return -ENXIO;
- }
- return 0;
- }
- static int fan2_get_speed(unsigned int *speed)
- {
- u8 hi, lo;
- bool rc;
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- if (unlikely(!fan_select_fan2()))
- return -EIO;
- rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
- !acpi_ec_read(fan_rpm_offset + 1, &hi);
- fan_select_fan1(); /* play it safe */
- if (rc)
- return -EIO;
- if (likely(speed))
- *speed = (hi << 8) | lo;
- break;
- default:
- return -ENXIO;
- }
- return 0;
- }
- static int fan_set_level(int level)
- {
- if (!fan_control_allowed)
- return -EPERM;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- if (level >= 0 && level <= 7) {
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
- return -EIO;
- } else
- return -EINVAL;
- break;
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- if (!(level & TP_EC_FAN_AUTO) &&
- !(level & TP_EC_FAN_FULLSPEED) &&
- ((level < 0) || (level > 7)))
- return -EINVAL;
- /* safety net should the EC not support AUTO
- * or FULLSPEED mode bits and just ignore them */
- if (level & TP_EC_FAN_FULLSPEED)
- level |= 7; /* safety min speed 7 */
- else if (level & TP_EC_FAN_AUTO)
- level |= 4; /* safety min speed 4 */
- if (!acpi_ec_write(fan_status_offset, level))
- return -EIO;
- else
- tp_features.fan_ctrl_status_undef = 0;
- break;
- default:
- return -ENXIO;
- }
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0x%02x\n", level);
- return 0;
- }
- static int fan_set_level_safe(int level)
- {
- int rc;
- if (!fan_control_allowed)
- return -EPERM;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- if (level == TPACPI_FAN_LAST_LEVEL)
- level = fan_control_desired_level;
- rc = fan_set_level(level);
- if (!rc)
- fan_update_desired_level(level);
- mutex_unlock(&fan_mutex);
- return rc;
- }
- static int fan_set_enable(void)
- {
- u8 s;
- int rc;
- if (!fan_control_allowed)
- return -EPERM;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- rc = fan_get_status(&s);
- if (rc < 0)
- break;
- /* Don't go out of emergency fan mode */
- if (s != 7) {
- s &= 0x07;
- s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
- }
- if (!acpi_ec_write(fan_status_offset, s))
- rc = -EIO;
- else {
- tp_features.fan_ctrl_status_undef = 0;
- rc = 0;
- }
- break;
- case TPACPI_FAN_WR_ACPI_SFAN:
- rc = fan_get_status(&s);
- if (rc < 0)
- break;
- s &= 0x07;
- /* Set fan to at least level 4 */
- s |= 4;
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
- rc = -EIO;
- else
- rc = 0;
- break;
- default:
- rc = -ENXIO;
- }
- mutex_unlock(&fan_mutex);
- if (!rc)
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0x%02x\n",
- s);
- return rc;
- }
- static int fan_set_disable(void)
- {
- int rc;
- if (!fan_control_allowed)
- return -EPERM;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- rc = 0;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- if (!acpi_ec_write(fan_status_offset, 0x00))
- rc = -EIO;
- else {
- fan_control_desired_level = 0;
- tp_features.fan_ctrl_status_undef = 0;
- }
- break;
- case TPACPI_FAN_WR_ACPI_SFAN:
- if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
- rc = -EIO;
- else
- fan_control_desired_level = 0;
- break;
- default:
- rc = -ENXIO;
- }
- if (!rc)
- vdbg_printk(TPACPI_DBG_FAN,
- "fan control: set fan control register to 0\n");
- mutex_unlock(&fan_mutex);
- return rc;
- }
- static int fan_set_speed(int speed)
- {
- int rc;
- if (!fan_control_allowed)
- return -EPERM;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- rc = 0;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_FANS:
- if (speed >= 0 && speed <= 65535) {
- if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
- speed, speed, speed))
- rc = -EIO;
- } else
- rc = -EINVAL;
- break;
- default:
- rc = -ENXIO;
- }
- mutex_unlock(&fan_mutex);
- return rc;
- }
- static void fan_watchdog_reset(void)
- {
- if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
- return;
- if (fan_watchdog_maxinterval > 0 &&
- tpacpi_lifecycle != TPACPI_LIFE_EXITING)
- mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
- msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
- else
- cancel_delayed_work(&fan_watchdog_task);
- }
- static void fan_watchdog_fire(struct work_struct *ignored)
- {
- int rc;
- if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
- return;
- pr_notice("fan watchdog: enabling fan\n");
- rc = fan_set_enable();
- if (rc < 0) {
- pr_err("fan watchdog: error %d while enabling fan, will try again later...\n",
- rc);
- /* reschedule for later */
- fan_watchdog_reset();
- }
- }
- /*
- * SYSFS fan layout: hwmon compatible (device)
- *
- * pwm*_enable:
- * 0: "disengaged" mode
- * 1: manual mode
- * 2: native EC "auto" mode (recommended, hardware default)
- *
- * pwm*: set speed in manual mode, ignored otherwise.
- * 0 is level 0; 255 is level 7. Intermediate points done with linear
- * interpolation.
- *
- * fan*_input: tachometer reading, RPM
- *
- *
- * SYSFS fan layout: extensions
- *
- * fan_watchdog (driver):
- * fan watchdog interval in seconds, 0 disables (default), max 120
- */
- /* sysfs fan pwm1_enable ----------------------------------------------- */
- static ssize_t fan_pwm1_enable_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res, mode;
- u8 status;
- res = fan_get_status_safe(&status);
- if (res)
- return res;
- if (status & TP_EC_FAN_FULLSPEED) {
- mode = 0;
- } else if (status & TP_EC_FAN_AUTO) {
- mode = 2;
- } else
- mode = 1;
- return snprintf(buf, PAGE_SIZE, "%d\n", mode);
- }
- static ssize_t fan_pwm1_enable_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long t;
- int res, level;
- if (parse_strtoul(buf, 2, &t))
- return -EINVAL;
- tpacpi_disclose_usertask("hwmon pwm1_enable",
- "set fan mode to %lu\n", t);
- switch (t) {
- case 0:
- level = TP_EC_FAN_FULLSPEED;
- break;
- case 1:
- level = TPACPI_FAN_LAST_LEVEL;
- break;
- case 2:
- level = TP_EC_FAN_AUTO;
- break;
- case 3:
- /* reserved for software-controlled auto mode */
- return -ENOSYS;
- default:
- return -EINVAL;
- }
- res = fan_set_level_safe(level);
- if (res == -ENXIO)
- return -EINVAL;
- else if (res < 0)
- return res;
- fan_watchdog_reset();
- return count;
- }
- static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
- fan_pwm1_enable_show, fan_pwm1_enable_store);
- /* sysfs fan pwm1 ------------------------------------------------------ */
- static ssize_t fan_pwm1_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res;
- u8 status;
- res = fan_get_status_safe(&status);
- if (res)
- return res;
- if ((status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
- status = fan_control_desired_level;
- if (status > 7)
- status = 7;
- return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
- }
- static ssize_t fan_pwm1_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- unsigned long s;
- int rc;
- u8 status, newlevel;
- if (parse_strtoul(buf, 255, &s))
- return -EINVAL;
- tpacpi_disclose_usertask("hwmon pwm1",
- "set fan speed to %lu\n", s);
- /* scale down from 0-255 to 0-7 */
- newlevel = (s >> 5) & 0x07;
- if (mutex_lock_killable(&fan_mutex))
- return -ERESTARTSYS;
- rc = fan_get_status(&status);
- if (!rc && (status &
- (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
- rc = fan_set_level(newlevel);
- if (rc == -ENXIO)
- rc = -EINVAL;
- else if (!rc) {
- fan_update_desired_level(newlevel);
- fan_watchdog_reset();
- }
- }
- mutex_unlock(&fan_mutex);
- return (rc) ? rc : count;
- }
- static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store);
- /* sysfs fan fan1_input ------------------------------------------------ */
- static ssize_t fan_fan1_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res;
- unsigned int speed;
- res = fan_get_speed(&speed);
- if (res < 0)
- return res;
- return snprintf(buf, PAGE_SIZE, "%u\n", speed);
- }
- static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL);
- /* sysfs fan fan2_input ------------------------------------------------ */
- static ssize_t fan_fan2_input_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
- {
- int res;
- unsigned int speed;
- res = fan2_get_speed(&speed);
- if (res < 0)
- return res;
- return snprintf(buf, PAGE_SIZE, "%u\n", speed);
- }
- static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL);
- /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
- static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
- }
- static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf,
- size_t count)
- {
- unsigned long t;
- if (parse_strtoul(buf, 120, &t))
- return -EINVAL;
- if (!fan_control_allowed)
- return -EPERM;
- fan_watchdog_maxinterval = t;
- fan_watchdog_reset();
- tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
- return count;
- }
- static DRIVER_ATTR_RW(fan_watchdog);
- /* --------------------------------------------------------------------- */
- static struct attribute *fan_attributes[] = {
- &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr,
- &dev_attr_fan1_input.attr,
- NULL, /* for fan2_input */
- NULL
- };
- static const struct attribute_group fan_attr_group = {
- .attrs = fan_attributes,
- };
- #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
- #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
- #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
- { .vendor = PCI_VENDOR_ID_IBM, \
- .bios = TPACPI_MATCH_ANY, \
- .ec = TPID(__id1, __id2), \
- .quirks = __quirks }
- #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPACPI_MATCH_ANY, \
- .ec = TPID(__id1, __id2), \
- .quirks = __quirks }
- #define TPACPI_FAN_QB(__id1, __id2, __quirks) \
- { .vendor = PCI_VENDOR_ID_LENOVO, \
- .bios = TPID(__id1, __id2), \
- .ec = TPACPI_MATCH_ANY, \
- .quirks = __quirks }
- static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
- TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
- TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
- TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
- TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
- TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
- TPACPI_FAN_QB('N', '1', TPACPI_FAN_2FAN),
- };
- #undef TPACPI_FAN_QL
- #undef TPACPI_FAN_QI
- #undef TPACPI_FAN_QB
- static int __init fan_init(struct ibm_init_struct *iibm)
- {
- int rc;
- unsigned long quirks;
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "initializing fan subdriver\n");
- mutex_init(&fan_mutex);
- fan_status_access_mode = TPACPI_FAN_NONE;
- fan_control_access_mode = TPACPI_FAN_WR_NONE;
- fan_control_commands = 0;
- fan_watchdog_maxinterval = 0;
- tp_features.fan_ctrl_status_undef = 0;
- tp_features.second_fan = 0;
- fan_control_desired_level = 7;
- if (tpacpi_is_ibm()) {
- TPACPI_ACPIHANDLE_INIT(fans);
- TPACPI_ACPIHANDLE_INIT(gfan);
- TPACPI_ACPIHANDLE_INIT(sfan);
- }
- quirks = tpacpi_check_quirks(fan_quirk_table,
- ARRAY_SIZE(fan_quirk_table));
- if (gfan_handle) {
- /* 570, 600e/x, 770e, 770x */
- fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
- } else {
- /* all other ThinkPads: note that even old-style
- * ThinkPad ECs supports the fan control register */
- if (likely(acpi_ec_read(fan_status_offset,
- &fan_control_initial_status))) {
- fan_status_access_mode = TPACPI_FAN_RD_TPEC;
- if (quirks & TPACPI_FAN_Q1)
- fan_quirk1_setup();
- if (quirks & TPACPI_FAN_2FAN) {
- tp_features.second_fan = 1;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "secondary fan support enabled\n");
- }
- } else {
- pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n");
- return 1;
- }
- }
- if (sfan_handle) {
- /* 570, 770x-JL */
- fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
- fan_control_commands |=
- TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
- } else {
- if (!gfan_handle) {
- /* gfan without sfan means no fan control */
- /* all other models implement TP EC 0x2f control */
- if (fans_handle) {
- /* X31, X40, X41 */
- fan_control_access_mode =
- TPACPI_FAN_WR_ACPI_FANS;
- fan_control_commands |=
- TPACPI_FAN_CMD_SPEED |
- TPACPI_FAN_CMD_LEVEL |
- TPACPI_FAN_CMD_ENABLE;
- } else {
- fan_control_access_mode = TPACPI_FAN_WR_TPEC;
- fan_control_commands |=
- TPACPI_FAN_CMD_LEVEL |
- TPACPI_FAN_CMD_ENABLE;
- }
- }
- }
- vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "fan is %s, modes %d, %d\n",
- str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
- fan_control_access_mode != TPACPI_FAN_WR_NONE),
- fan_status_access_mode, fan_control_access_mode);
- /* fan control master switch */
- if (!fan_control_allowed) {
- fan_control_access_mode = TPACPI_FAN_WR_NONE;
- fan_control_commands = 0;
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
- "fan control features disabled by parameter\n");
- }
- /* update fan_control_desired_level */
- if (fan_status_access_mode != TPACPI_FAN_NONE)
- fan_get_status_safe(NULL);
- if (fan_status_access_mode != TPACPI_FAN_NONE ||
- fan_control_access_mode != TPACPI_FAN_WR_NONE) {
- if (tp_features.second_fan) {
- /* attach second fan tachometer */
- fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
- &dev_attr_fan2_input.attr;
- }
- rc = sysfs_create_group(&tpacpi_hwmon->kobj,
- &fan_attr_group);
- if (rc < 0)
- return rc;
- rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
- &driver_attr_fan_watchdog);
- if (rc < 0) {
- sysfs_remove_group(&tpacpi_hwmon->kobj,
- &fan_attr_group);
- return rc;
- }
- return 0;
- } else
- return 1;
- }
- static void fan_exit(void)
- {
- vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
- "cancelling any pending fan watchdog tasks\n");
- /* FIXME: can we really do this unconditionally? */
- sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group);
- driver_remove_file(&tpacpi_hwmon_pdriver.driver,
- &driver_attr_fan_watchdog);
- cancel_delayed_work(&fan_watchdog_task);
- flush_workqueue(tpacpi_wq);
- }
- static void fan_suspend(void)
- {
- int rc;
- if (!fan_control_allowed)
- return;
- /* Store fan status in cache */
- fan_control_resume_level = 0;
- rc = fan_get_status_safe(&fan_control_resume_level);
- if (rc < 0)
- pr_notice("failed to read fan level for later restore during resume: %d\n",
- rc);
- /* if it is undefined, don't attempt to restore it.
- * KEEP THIS LAST */
- if (tp_features.fan_ctrl_status_undef)
- fan_control_resume_level = 0;
- }
- static void fan_resume(void)
- {
- u8 current_level = 7;
- bool do_set = false;
- int rc;
- /* DSDT *always* updates status on resume */
- tp_features.fan_ctrl_status_undef = 0;
- if (!fan_control_allowed ||
- !fan_control_resume_level ||
- (fan_get_status_safe(¤t_level) < 0))
- return;
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- /* never decrease fan level */
- do_set = (fan_control_resume_level > current_level);
- break;
- case TPACPI_FAN_WR_ACPI_FANS:
- case TPACPI_FAN_WR_TPEC:
- /* never decrease fan level, scale is:
- * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
- *
- * We expect the firmware to set either 7 or AUTO, but we
- * handle FULLSPEED out of paranoia.
- *
- * So, we can safely only restore FULLSPEED or 7, anything
- * else could slow the fan. Restoring AUTO is useless, at
- * best that's exactly what the DSDT already set (it is the
- * slower it uses).
- *
- * Always keep in mind that the DSDT *will* have set the
- * fans to what the vendor supposes is the best level. We
- * muck with it only to speed the fan up.
- */
- if (fan_control_resume_level != 7 &&
- !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
- return;
- else
- do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
- (current_level != fan_control_resume_level);
- break;
- default:
- return;
- }
- if (do_set) {
- pr_notice("restoring fan level to 0x%02x\n",
- fan_control_resume_level);
- rc = fan_set_level_safe(fan_control_resume_level);
- if (rc < 0)
- pr_notice("failed to restore fan level: %d\n", rc);
- }
- }
- static int fan_read(struct seq_file *m)
- {
- int rc;
- u8 status;
- unsigned int speed = 0;
- switch (fan_status_access_mode) {
- case TPACPI_FAN_RD_ACPI_GFAN:
- /* 570, 600e/x, 770e, 770x */
- rc = fan_get_status_safe(&status);
- if (rc < 0)
- return rc;
- seq_printf(m, "status:\t\t%s\n"
- "level:\t\t%d\n",
- (status != 0) ? "enabled" : "disabled", status);
- break;
- case TPACPI_FAN_RD_TPEC:
- /* all except 570, 600e/x, 770e, 770x */
- rc = fan_get_status_safe(&status);
- if (rc < 0)
- return rc;
- seq_printf(m, "status:\t\t%s\n",
- (status != 0) ? "enabled" : "disabled");
- rc = fan_get_speed(&speed);
- if (rc < 0)
- return rc;
- seq_printf(m, "speed:\t\t%d\n", speed);
- if (status & TP_EC_FAN_FULLSPEED)
- /* Disengaged mode takes precedence */
- seq_printf(m, "level:\t\tdisengaged\n");
- else if (status & TP_EC_FAN_AUTO)
- seq_printf(m, "level:\t\tauto\n");
- else
- seq_printf(m, "level:\t\t%d\n", status);
- break;
- case TPACPI_FAN_NONE:
- default:
- seq_printf(m, "status:\t\tnot supported\n");
- }
- if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
- seq_printf(m, "commands:\tlevel <level>");
- switch (fan_control_access_mode) {
- case TPACPI_FAN_WR_ACPI_SFAN:
- seq_printf(m, " (<level> is 0-7)\n");
- break;
- default:
- seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n");
- break;
- }
- }
- if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
- seq_printf(m, "commands:\tenable, disable\n"
- "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n");
- if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
- seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n");
- return 0;
- }
- static int fan_write_cmd_level(const char *cmd, int *rc)
- {
- int level;
- if (strlencmp(cmd, "level auto") == 0)
- level = TP_EC_FAN_AUTO;
- else if ((strlencmp(cmd, "level disengaged") == 0) |
- (strlencmp(cmd, "level full-speed") == 0))
- level = TP_EC_FAN_FULLSPEED;
- else if (sscanf(cmd, "level %d", &level) != 1)
- return 0;
- *rc = fan_set_level_safe(level);
- if (*rc == -ENXIO)
- pr_err("level command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan",
- "set level to %d\n", level);
- return 1;
- }
- static int fan_write_cmd_enable(const char *cmd, int *rc)
- {
- if (strlencmp(cmd, "enable") != 0)
- return 0;
- *rc = fan_set_enable();
- if (*rc == -ENXIO)
- pr_err("enable command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan", "enable\n");
- return 1;
- }
- static int fan_write_cmd_disable(const char *cmd, int *rc)
- {
- if (strlencmp(cmd, "disable") != 0)
- return 0;
- *rc = fan_set_disable();
- if (*rc == -ENXIO)
- pr_err("disable command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan", "disable\n");
- return 1;
- }
- static int fan_write_cmd_speed(const char *cmd, int *rc)
- {
- int speed;
- /* TODO:
- * Support speed <low> <medium> <high> ? */
- if (sscanf(cmd, "speed %d", &speed) != 1)
- return 0;
- *rc = fan_set_speed(speed);
- if (*rc == -ENXIO)
- pr_err("speed command accepted for unsupported access mode %d\n",
- fan_control_access_mode);
- else if (!*rc)
- tpacpi_disclose_usertask("procfs fan",
- "set speed to %d\n", speed);
- return 1;
- }
- static int fan_write_cmd_watchdog(const char *cmd, int *rc)
- {
- int interval;
- if (sscanf(cmd, "watchdog %d", &interval) != 1)
- return 0;
- if (interval < 0 || interval > 120)
- *rc = -EINVAL;
- else {
- fan_watchdog_maxinterval = interval;
- tpacpi_disclose_usertask("procfs fan",
- "set watchdog timer to %d\n",
- interval);
- }
- return 1;
- }
- static int fan_write(char *buf)
- {
- char *cmd;
- int rc = 0;
- while (!rc && (cmd = next_cmd(&buf))) {
- if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
- fan_write_cmd_level(cmd, &rc)) &&
- !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
- (fan_write_cmd_enable(cmd, &rc) ||
- fan_write_cmd_disable(cmd, &rc) ||
- fan_write_cmd_watchdog(cmd, &rc))) &&
- !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
- fan_write_cmd_speed(cmd, &rc))
- )
- rc = -EINVAL;
- else if (!rc)
- fan_watchdog_reset();
- }
- return rc;
- }
- static struct ibm_struct fan_driver_data = {
- .name = "fan",
- .read = fan_read,
- .write = fan_write,
- .exit = fan_exit,
- .suspend = fan_suspend,
- .resume = fan_resume,
- };
- /*************************************************************************
- * Mute LED subdriver
- */
- struct tp_led_table {
- acpi_string name;
- int on_value;
- int off_value;
- int state;
- };
- static struct tp_led_table led_tables[] = {
- [TPACPI_LED_MUTE] = {
- .name = "SSMS",
- .on_value = 1,
- .off_value = 0,
- },
- [TPACPI_LED_MICMUTE] = {
- .name = "MMTS",
- .on_value = 2,
- .off_value = 0,
- },
- };
- static int mute_led_on_off(struct tp_led_table *t, bool state)
- {
- acpi_handle temp;
- int output;
- if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) {
- pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
- return -EIO;
- }
- if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
- state ? t->on_value : t->off_value))
- return -EIO;
- t->state = state;
- return state;
- }
- int tpacpi_led_set(int whichled, bool on)
- {
- struct tp_led_table *t;
- if (whichled < 0 || whichled >= TPACPI_LED_MAX)
- return -EINVAL;
- t = &led_tables[whichled];
- if (t->state < 0 || t->state == on)
- return t->state;
- return mute_led_on_off(t, on);
- }
- EXPORT_SYMBOL_GPL(tpacpi_led_set);
- static int mute_led_init(struct ibm_init_struct *iibm)
- {
- acpi_handle temp;
- int i;
- for (i = 0; i < TPACPI_LED_MAX; i++) {
- struct tp_led_table *t = &led_tables[i];
- if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
- mute_led_on_off(t, false);
- else
- t->state = -ENODEV;
- }
- return 0;
- }
- static void mute_led_exit(void)
- {
- int i;
- for (i = 0; i < TPACPI_LED_MAX; i++)
- tpacpi_led_set(i, false);
- }
- static void mute_led_resume(void)
- {
- int i;
- for (i = 0; i < TPACPI_LED_MAX; i++) {
- struct tp_led_table *t = &led_tables[i];
- if (t->state >= 0)
- mute_led_on_off(t, t->state);
- }
- }
- static struct ibm_struct mute_led_driver_data = {
- .name = "mute_led",
- .exit = mute_led_exit,
- .resume = mute_led_resume,
- };
- /*
- * Battery Wear Control Driver
- * Contact: Ognjen Galic <smclt30p@gmail.com>
- */
- /* Metadata */
- #define GET_START "BCTG"
- #define SET_START "BCCS"
- #define GET_STOP "BCSG"
- #define SET_STOP "BCSS"
- #define START_ATTR "charge_start_threshold"
- #define STOP_ATTR "charge_stop_threshold"
- enum {
- BAT_ANY = 0,
- BAT_PRIMARY = 1,
- BAT_SECONDARY = 2
- };
- enum {
- /* Error condition bit */
- METHOD_ERR = BIT(31),
- };
- enum {
- /* This is used in the get/set helpers */
- THRESHOLD_START,
- THRESHOLD_STOP,
- };
- struct tpacpi_battery_data {
- int charge_start;
- int start_support;
- int charge_stop;
- int stop_support;
- };
- struct tpacpi_battery_driver_data {
- struct tpacpi_battery_data batteries[3];
- int individual_addressing;
- };
- static struct tpacpi_battery_driver_data battery_info;
- /* ACPI helpers/functions/probes */
- /**
- * This evaluates a ACPI method call specific to the battery
- * ACPI extension. The specifics are that an error is marked
- * in the 32rd bit of the response, so we just check that here.
- */
- static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
- {
- int response;
- if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
- acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
- return AE_ERROR;
- }
- if (response & METHOD_ERR) {
- acpi_handle_err(hkey_handle,
- "%s evaluated but flagged as error", method);
- return AE_ERROR;
- }
- *ret = response;
- return AE_OK;
- }
- static int tpacpi_battery_get(int what, int battery, int *ret)
- {
- switch (what) {
- case THRESHOLD_START:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
- return -ENODEV;
- /* The value is in the low 8 bits of the response */
- *ret = *ret & 0xFF;
- return 0;
- case THRESHOLD_STOP:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
- return -ENODEV;
- /* Value is in lower 8 bits */
- *ret = *ret & 0xFF;
- /*
- * On the stop value, if we return 0 that
- * does not make any sense. 0 means Default, which
- * means that charging stops at 100%, so we return
- * that.
- */
- if (*ret == 0)
- *ret = 100;
- return 0;
- default:
- pr_crit("wrong parameter: %d", what);
- return -EINVAL;
- }
- }
- static int tpacpi_battery_set(int what, int battery, int value)
- {
- int param, ret;
- /* The first 8 bits are the value of the threshold */
- param = value;
- /* The battery ID is in bits 8-9, 2 bits */
- param |= battery << 8;
- switch (what) {
- case THRESHOLD_START:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
- pr_err("failed to set charge threshold on battery %d",
- battery);
- return -ENODEV;
- }
- return 0;
- case THRESHOLD_STOP:
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
- pr_err("failed to set stop threshold: %d", battery);
- return -ENODEV;
- }
- return 0;
- default:
- pr_crit("wrong parameter: %d", what);
- return -EINVAL;
- }
- }
- static int tpacpi_battery_probe(int battery)
- {
- int ret = 0;
- memset(&battery_info.batteries[battery], 0,
- sizeof(battery_info.batteries[battery]));
- /*
- * 1) Get the current start threshold
- * 2) Check for support
- * 3) Get the current stop threshold
- * 4) Check for support
- */
- if (acpi_has_method(hkey_handle, GET_START)) {
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
- pr_err("Error probing battery %d\n", battery);
- return -ENODEV;
- }
- /* Individual addressing is in bit 9 */
- if (ret & BIT(9))
- battery_info.individual_addressing = true;
- /* Support is marked in bit 8 */
- if (ret & BIT(8))
- battery_info.batteries[battery].start_support = 1;
- else
- return -ENODEV;
- if (tpacpi_battery_get(THRESHOLD_START, battery,
- &battery_info.batteries[battery].charge_start)) {
- pr_err("Error probing battery %d\n", battery);
- return -ENODEV;
- }
- }
- if (acpi_has_method(hkey_handle, GET_STOP)) {
- if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
- pr_err("Error probing battery stop; %d\n", battery);
- return -ENODEV;
- }
- /* Support is marked in bit 8 */
- if (ret & BIT(8))
- battery_info.batteries[battery].stop_support = 1;
- else
- return -ENODEV;
- if (tpacpi_battery_get(THRESHOLD_STOP, battery,
- &battery_info.batteries[battery].charge_stop)) {
- pr_err("Error probing battery stop: %d\n", battery);
- return -ENODEV;
- }
- }
- pr_info("battery %d registered (start %d, stop %d)",
- battery,
- battery_info.batteries[battery].charge_start,
- battery_info.batteries[battery].charge_stop);
- return 0;
- }
- /* General helper functions */
- static int tpacpi_battery_get_id(const char *battery_name)
- {
- if (strcmp(battery_name, "BAT0") == 0 ||
- tp_features.battery_force_primary)
- return BAT_PRIMARY;
- if (strcmp(battery_name, "BAT1") == 0)
- return BAT_SECONDARY;
- /*
- * If for some reason the battery is not BAT0 nor is it
- * BAT1, we will assume it's the default, first battery,
- * AKA primary.
- */
- pr_warn("unknown battery %s, assuming primary", battery_name);
- return BAT_PRIMARY;
- }
- /* sysfs interface */
- static ssize_t tpacpi_battery_store(int what,
- struct device *dev,
- const char *buf, size_t count)
- {
- struct power_supply *supply = to_power_supply(dev);
- unsigned long value;
- int battery, rval;
- /*
- * Some systems have support for more than
- * one battery. If that is the case,
- * tpacpi_battery_probe marked that addressing
- * them individually is supported, so we do that
- * based on the device struct.
- *
- * On systems that are not supported, we assume
- * the primary as most of the ACPI calls fail
- * with "Any Battery" as the parameter.
- */
- if (battery_info.individual_addressing)
- /* BAT_PRIMARY or BAT_SECONDARY */
- battery = tpacpi_battery_get_id(supply->desc->name);
- else
- battery = BAT_PRIMARY;
- rval = kstrtoul(buf, 10, &value);
- if (rval)
- return rval;
- switch (what) {
- case THRESHOLD_START:
- if (!battery_info.batteries[battery].start_support)
- return -ENODEV;
- /* valid values are [0, 99] */
- if (value < 0 || value > 99)
- return -EINVAL;
- if (value > battery_info.batteries[battery].charge_stop)
- return -EINVAL;
- if (tpacpi_battery_set(THRESHOLD_START, battery, value))
- return -ENODEV;
- battery_info.batteries[battery].charge_start = value;
- return count;
- case THRESHOLD_STOP:
- if (!battery_info.batteries[battery].stop_support)
- return -ENODEV;
- /* valid values are [1, 100] */
- if (value < 1 || value > 100)
- return -EINVAL;
- if (value < battery_info.batteries[battery].charge_start)
- return -EINVAL;
- battery_info.batteries[battery].charge_stop = value;
- /*
- * When 100 is passed to stop, we need to flip
- * it to 0 as that the EC understands that as
- * "Default", which will charge to 100%
- */
- if (value == 100)
- value = 0;
- if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
- return -EINVAL;
- return count;
- default:
- pr_crit("Wrong parameter: %d", what);
- return -EINVAL;
- }
- return count;
- }
- static ssize_t tpacpi_battery_show(int what,
- struct device *dev,
- char *buf)
- {
- struct power_supply *supply = to_power_supply(dev);
- int ret, battery;
- /*
- * Some systems have support for more than
- * one battery. If that is the case,
- * tpacpi_battery_probe marked that addressing
- * them individually is supported, so we;
- * based on the device struct.
- *
- * On systems that are not supported, we assume
- * the primary as most of the ACPI calls fail
- * with "Any Battery" as the parameter.
- */
- if (battery_info.individual_addressing)
- /* BAT_PRIMARY or BAT_SECONDARY */
- battery = tpacpi_battery_get_id(supply->desc->name);
- else
- battery = BAT_PRIMARY;
- if (tpacpi_battery_get(what, battery, &ret))
- return -ENODEV;
- return sprintf(buf, "%d\n", ret);
- }
- static ssize_t charge_start_threshold_show(struct device *device,
- struct device_attribute *attr,
- char *buf)
- {
- return tpacpi_battery_show(THRESHOLD_START, device, buf);
- }
- static ssize_t charge_stop_threshold_show(struct device *device,
- struct device_attribute *attr,
- char *buf)
- {
- return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
- }
- static ssize_t charge_start_threshold_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
- }
- static ssize_t charge_stop_threshold_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
- {
- return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
- }
- static DEVICE_ATTR_RW(charge_start_threshold);
- static DEVICE_ATTR_RW(charge_stop_threshold);
- static struct attribute *tpacpi_battery_attrs[] = {
- &dev_attr_charge_start_threshold.attr,
- &dev_attr_charge_stop_threshold.attr,
- NULL,
- };
- ATTRIBUTE_GROUPS(tpacpi_battery);
- /* ACPI battery hooking */
- static int tpacpi_battery_add(struct power_supply *battery)
- {
- int batteryid = tpacpi_battery_get_id(battery->desc->name);
- if (tpacpi_battery_probe(batteryid))
- return -ENODEV;
- if (device_add_groups(&battery->dev, tpacpi_battery_groups))
- return -ENODEV;
- return 0;
- }
- static int tpacpi_battery_remove(struct power_supply *battery)
- {
- device_remove_groups(&battery->dev, tpacpi_battery_groups);
- return 0;
- }
- static struct acpi_battery_hook battery_hook = {
- .add_battery = tpacpi_battery_add,
- .remove_battery = tpacpi_battery_remove,
- .name = "ThinkPad Battery Extension",
- };
- /* Subdriver init/exit */
- static const struct tpacpi_quirk battery_quirk_table[] __initconst = {
- /*
- * Individual addressing is broken on models that expose the
- * primary battery as BAT1.
- */
- TPACPI_Q_LNV('J', '7', true), /* B5400 */
- TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */
- TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */
- TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */
- TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */
- TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */
- };
- static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
- {
- memset(&battery_info, 0, sizeof(battery_info));
- tp_features.battery_force_primary = tpacpi_check_quirks(
- battery_quirk_table,
- ARRAY_SIZE(battery_quirk_table));
- battery_hook_register(&battery_hook);
- return 0;
- }
- static void tpacpi_battery_exit(void)
- {
- battery_hook_unregister(&battery_hook);
- }
- static struct ibm_struct battery_driver_data = {
- .name = "battery",
- .exit = tpacpi_battery_exit,
- };
- /****************************************************************************
- ****************************************************************************
- *
- * Infrastructure
- *
- ****************************************************************************
- ****************************************************************************/
- /*
- * HKEY event callout for other subdrivers go here
- * (yes, it is ugly, but it is quick, safe, and gets the job done
- */
- static void tpacpi_driver_event(const unsigned int hkey_event)
- {
- if (ibm_backlight_device) {
- switch (hkey_event) {
- case TP_HKEY_EV_BRGHT_UP:
- case TP_HKEY_EV_BRGHT_DOWN:
- tpacpi_brightness_notify_change();
- }
- }
- if (alsa_card) {
- switch (hkey_event) {
- case TP_HKEY_EV_VOL_UP:
- case TP_HKEY_EV_VOL_DOWN:
- case TP_HKEY_EV_VOL_MUTE:
- volume_alsa_notify_change();
- }
- }
- if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) {
- enum led_brightness brightness;
- mutex_lock(&kbdlight_mutex);
- /*
- * Check the brightness actually changed, setting the brightness
- * through kbdlight_set_level() also triggers this event.
- */
- brightness = kbdlight_sysfs_get(NULL);
- if (kbdlight_brightness != brightness) {
- kbdlight_brightness = brightness;
- led_classdev_notify_brightness_hw_changed(
- &tpacpi_led_kbdlight.led_classdev, brightness);
- }
- mutex_unlock(&kbdlight_mutex);
- }
- }
- static void hotkey_driver_event(const unsigned int scancode)
- {
- tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
- }
- /* --------------------------------------------------------------------- */
- /* /proc support */
- static struct proc_dir_entry *proc_dir;
- /*
- * Module and infrastructure proble, init and exit handling
- */
- static bool force_load;
- #ifdef CONFIG_THINKPAD_ACPI_DEBUG
- static const char * __init str_supported(int is_supported)
- {
- static char text_unsupported[] __initdata = "not supported";
- return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
- }
- #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
- static void ibm_exit(struct ibm_struct *ibm)
- {
- dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
- list_del_init(&ibm->all_drivers);
- if (ibm->flags.acpi_notify_installed) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: acpi_remove_notify_handler\n", ibm->name);
- BUG_ON(!ibm->acpi);
- acpi_remove_notify_handler(*ibm->acpi->handle,
- ibm->acpi->type,
- dispatch_acpi_notify);
- ibm->flags.acpi_notify_installed = 0;
- }
- if (ibm->flags.proc_created) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: remove_proc_entry\n", ibm->name);
- remove_proc_entry(ibm->name, proc_dir);
- ibm->flags.proc_created = 0;
- }
- if (ibm->flags.acpi_driver_registered) {
- dbg_printk(TPACPI_DBG_EXIT,
- "%s: acpi_bus_unregister_driver\n", ibm->name);
- BUG_ON(!ibm->acpi);
- acpi_bus_unregister_driver(ibm->acpi->driver);
- kfree(ibm->acpi->driver);
- ibm->acpi->driver = NULL;
- ibm->flags.acpi_driver_registered = 0;
- }
- if (ibm->flags.init_called && ibm->exit) {
- ibm->exit();
- ibm->flags.init_called = 0;
- }
- dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
- }
- static int __init ibm_init(struct ibm_init_struct *iibm)
- {
- int ret;
- struct ibm_struct *ibm = iibm->data;
- struct proc_dir_entry *entry;
- BUG_ON(ibm == NULL);
- INIT_LIST_HEAD(&ibm->all_drivers);
- if (ibm->flags.experimental && !experimental)
- return 0;
- dbg_printk(TPACPI_DBG_INIT,
- "probing for %s\n", ibm->name);
- if (iibm->init) {
- ret = iibm->init(iibm);
- if (ret > 0)
- return 0; /* probe failed */
- if (ret)
- return ret;
- ibm->flags.init_called = 1;
- }
- if (ibm->acpi) {
- if (ibm->acpi->hid) {
- ret = register_tpacpi_subdriver(ibm);
- if (ret)
- goto err_out;
- }
- if (ibm->acpi->notify) {
- ret = setup_acpi_notify(ibm);
- if (ret == -ENODEV) {
- pr_notice("disabling subdriver %s\n",
- ibm->name);
- ret = 0;
- goto err_out;
- }
- if (ret < 0)
- goto err_out;
- }
- }
- dbg_printk(TPACPI_DBG_INIT,
- "%s installed\n", ibm->name);
- if (ibm->read) {
- umode_t mode = iibm->base_procfs_mode;
- if (!mode)
- mode = S_IRUGO;
- if (ibm->write)
- mode |= S_IWUSR;
- entry = proc_create_data(ibm->name, mode, proc_dir,
- &dispatch_proc_fops, ibm);
- if (!entry) {
- pr_err("unable to create proc entry %s\n", ibm->name);
- ret = -ENODEV;
- goto err_out;
- }
- ibm->flags.proc_created = 1;
- }
- list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
- return 0;
- err_out:
- dbg_printk(TPACPI_DBG_INIT,
- "%s: at error exit path with result %d\n",
- ibm->name, ret);
- ibm_exit(ibm);
- return (ret < 0) ? ret : 0;
- }
- /* Probing */
- static char __init tpacpi_parse_fw_id(const char * const s,
- u32 *model, u16 *release)
- {
- int i;
- if (!s || strlen(s) < 8)
- goto invalid;
- for (i = 0; i < 8; i++)
- if (!((s[i] >= '0' && s[i] <= '9') ||
- (s[i] >= 'A' && s[i] <= 'Z')))
- goto invalid;
- /*
- * Most models: xxyTkkWW (#.##c)
- * Ancient 570/600 and -SL lacks (#.##c)
- */
- if (s[3] == 'T' || s[3] == 'N') {
- *model = TPID(s[0], s[1]);
- *release = TPVER(s[4], s[5]);
- return s[2];
- /* New models: xxxyTkkW (#.##c); T550 and some others */
- } else if (s[4] == 'T' || s[4] == 'N') {
- *model = TPID3(s[0], s[1], s[2]);
- *release = TPVER(s[5], s[6]);
- return s[3];
- }
- invalid:
- return '\0';
- }
- /* returns 0 - probe ok, or < 0 - probe error.
- * Probe ok doesn't mean thinkpad found.
- * On error, kfree() cleanup on tp->* is not performed, caller must do it */
- static int __must_check __init get_thinkpad_model_data(
- struct thinkpad_id_data *tp)
- {
- const struct dmi_device *dev = NULL;
- char ec_fw_string[18];
- char const *s;
- char t;
- if (!tp)
- return -EINVAL;
- memset(tp, 0, sizeof(*tp));
- if (dmi_name_in_vendors("IBM"))
- tp->vendor = PCI_VENDOR_ID_IBM;
- else if (dmi_name_in_vendors("LENOVO"))
- tp->vendor = PCI_VENDOR_ID_LENOVO;
- else
- return 0;
- s = dmi_get_system_info(DMI_BIOS_VERSION);
- tp->bios_version_str = kstrdup(s, GFP_KERNEL);
- if (s && !tp->bios_version_str)
- return -ENOMEM;
- /* Really ancient ThinkPad 240X will fail this, which is fine */
- t = tpacpi_parse_fw_id(tp->bios_version_str,
- &tp->bios_model, &tp->bios_release);
- if (t != 'E' && t != 'C')
- return 0;
- /*
- * ThinkPad T23 or newer, A31 or newer, R50e or newer,
- * X32 or newer, all Z series; Some models must have an
- * up-to-date BIOS or they will not be detected.
- *
- * See http://thinkwiki.org/wiki/List_of_DMI_IDs
- */
- while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
- if (sscanf(dev->name,
- "IBM ThinkPad Embedded Controller -[%17c",
- ec_fw_string) == 1) {
- ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
- ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
- tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
- if (!tp->ec_version_str)
- return -ENOMEM;
- t = tpacpi_parse_fw_id(ec_fw_string,
- &tp->ec_model, &tp->ec_release);
- if (t != 'H') {
- pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n",
- ec_fw_string);
- pr_notice("please report this to %s\n",
- TPACPI_MAIL);
- }
- break;
- }
- }
- s = dmi_get_system_info(DMI_PRODUCT_VERSION);
- if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
- tp->model_str = kstrdup(s, GFP_KERNEL);
- if (!tp->model_str)
- return -ENOMEM;
- } else {
- s = dmi_get_system_info(DMI_BIOS_VENDOR);
- if (s && !(strncasecmp(s, "Lenovo", 6))) {
- tp->model_str = kstrdup(s, GFP_KERNEL);
- if (!tp->model_str)
- return -ENOMEM;
- }
- }
- s = dmi_get_system_info(DMI_PRODUCT_NAME);
- tp->nummodel_str = kstrdup(s, GFP_KERNEL);
- if (s && !tp->nummodel_str)
- return -ENOMEM;
- return 0;
- }
- static int __init probe_for_thinkpad(void)
- {
- int is_thinkpad;
- if (acpi_disabled)
- return -ENODEV;
- /* It would be dangerous to run the driver in this case */
- if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
- return -ENODEV;
- /*
- * Non-ancient models have better DMI tagging, but very old models
- * don't. tpacpi_is_fw_known() is a cheat to help in that case.
- */
- is_thinkpad = (thinkpad_id.model_str != NULL) ||
- (thinkpad_id.ec_model != 0) ||
- tpacpi_is_fw_known();
- /* The EC handler is required */
- tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
- if (!ec_handle) {
- if (is_thinkpad)
- pr_err("Not yet supported ThinkPad detected!\n");
- return -ENODEV;
- }
- if (!is_thinkpad && !force_load)
- return -ENODEV;
- return 0;
- }
- static void __init thinkpad_acpi_init_banner(void)
- {
- pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
- pr_info("%s\n", TPACPI_URL);
- pr_info("ThinkPad BIOS %s, EC %s\n",
- (thinkpad_id.bios_version_str) ?
- thinkpad_id.bios_version_str : "unknown",
- (thinkpad_id.ec_version_str) ?
- thinkpad_id.ec_version_str : "unknown");
- BUG_ON(!thinkpad_id.vendor);
- if (thinkpad_id.model_str)
- pr_info("%s %s, model %s\n",
- (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
- "IBM" : ((thinkpad_id.vendor ==
- PCI_VENDOR_ID_LENOVO) ?
- "Lenovo" : "Unknown vendor"),
- thinkpad_id.model_str,
- (thinkpad_id.nummodel_str) ?
- thinkpad_id.nummodel_str : "unknown");
- }
- /* Module init, exit, parameters */
- static struct ibm_init_struct ibms_init[] __initdata = {
- {
- .data = &thinkpad_acpi_driver_data,
- },
- {
- .init = hotkey_init,
- .data = &hotkey_driver_data,
- },
- {
- .init = bluetooth_init,
- .data = &bluetooth_driver_data,
- },
- {
- .init = wan_init,
- .data = &wan_driver_data,
- },
- {
- .init = uwb_init,
- .data = &uwb_driver_data,
- },
- #ifdef CONFIG_THINKPAD_ACPI_VIDEO
- {
- .init = video_init,
- .base_procfs_mode = S_IRUSR,
- .data = &video_driver_data,
- },
- #endif
- {
- .init = kbdlight_init,
- .data = &kbdlight_driver_data,
- },
- {
- .init = light_init,
- .data = &light_driver_data,
- },
- {
- .init = cmos_init,
- .data = &cmos_driver_data,
- },
- {
- .init = led_init,
- .data = &led_driver_data,
- },
- {
- .init = beep_init,
- .data = &beep_driver_data,
- },
- {
- .init = thermal_init,
- .data = &thermal_driver_data,
- },
- {
- .init = brightness_init,
- .data = &brightness_driver_data,
- },
- {
- .init = volume_init,
- .data = &volume_driver_data,
- },
- {
- .init = fan_init,
- .data = &fan_driver_data,
- },
- {
- .init = mute_led_init,
- .data = &mute_led_driver_data,
- },
- {
- .init = tpacpi_battery_init,
- .data = &battery_driver_data,
- },
- };
- static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
- {
- unsigned int i;
- struct ibm_struct *ibm;
- if (!kp || !kp->name || !val)
- return -EINVAL;
- for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
- ibm = ibms_init[i].data;
- WARN_ON(ibm == NULL);
- if (!ibm || !ibm->name)
- continue;
- if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
- if (strlen(val) > sizeof(ibms_init[i].param) - 2)
- return -ENOSPC;
- strcpy(ibms_init[i].param, val);
- strcat(ibms_init[i].param, ",");
- return 0;
- }
- }
- return -EINVAL;
- }
- module_param(experimental, int, 0444);
- MODULE_PARM_DESC(experimental,
- "Enables experimental features when non-zero");
- module_param_named(debug, dbg_level, uint, 0);
- MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
- module_param(force_load, bool, 0444);
- MODULE_PARM_DESC(force_load,
- "Attempts to load the driver even on a mis-identified ThinkPad when true");
- module_param_named(fan_control, fan_control_allowed, bool, 0444);
- MODULE_PARM_DESC(fan_control,
- "Enables setting fan parameters features when true");
- module_param_named(brightness_mode, brightness_mode, uint, 0444);
- MODULE_PARM_DESC(brightness_mode,
- "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
- module_param(brightness_enable, uint, 0444);
- MODULE_PARM_DESC(brightness_enable,
- "Enables backlight control when 1, disables when 0");
- #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
- module_param_named(volume_mode, volume_mode, uint, 0444);
- MODULE_PARM_DESC(volume_mode,
- "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
- module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
- MODULE_PARM_DESC(volume_capabilities,
- "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only");
- module_param_named(volume_control, volume_control_allowed, bool, 0444);
- MODULE_PARM_DESC(volume_control,
- "Enables software override for the console audio control when true");
- module_param_named(software_mute, software_mute_requested, bool, 0444);
- MODULE_PARM_DESC(software_mute,
- "Request full software mute control");
- /* ALSA module API parameters */
- module_param_named(index, alsa_index, int, 0444);
- MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
- module_param_named(id, alsa_id, charp, 0444);
- MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
- module_param_named(enable, alsa_enable, bool, 0444);
- MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
- #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
- /* The module parameter can't be read back, that's why 0 is used here */
- #define TPACPI_PARAM(feature) \
- module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
- MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation")
- TPACPI_PARAM(hotkey);
- TPACPI_PARAM(bluetooth);
- TPACPI_PARAM(video);
- TPACPI_PARAM(light);
- TPACPI_PARAM(cmos);
- TPACPI_PARAM(led);
- TPACPI_PARAM(beep);
- TPACPI_PARAM(brightness);
- TPACPI_PARAM(volume);
- TPACPI_PARAM(fan);
- #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- module_param(dbg_wlswemul, uint, 0444);
- MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
- module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
- MODULE_PARM_DESC(wlsw_state,
- "Initial state of the emulated WLSW switch");
- module_param(dbg_bluetoothemul, uint, 0444);
- MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
- module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
- MODULE_PARM_DESC(bluetooth_state,
- "Initial state of the emulated bluetooth switch");
- module_param(dbg_wwanemul, uint, 0444);
- MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
- module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
- MODULE_PARM_DESC(wwan_state,
- "Initial state of the emulated WWAN switch");
- module_param(dbg_uwbemul, uint, 0444);
- MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
- module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
- MODULE_PARM_DESC(uwb_state,
- "Initial state of the emulated UWB switch");
- #endif
- static void thinkpad_acpi_module_exit(void)
- {
- struct ibm_struct *ibm, *itmp;
- tpacpi_lifecycle = TPACPI_LIFE_EXITING;
- list_for_each_entry_safe_reverse(ibm, itmp,
- &tpacpi_all_drivers,
- all_drivers) {
- ibm_exit(ibm);
- }
- dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
- if (tpacpi_inputdev) {
- if (tp_features.input_device_registered)
- input_unregister_device(tpacpi_inputdev);
- else
- input_free_device(tpacpi_inputdev);
- kfree(hotkey_keycode_map);
- }
- if (tpacpi_hwmon)
- hwmon_device_unregister(tpacpi_hwmon);
- if (tpacpi_sensors_pdev)
- platform_device_unregister(tpacpi_sensors_pdev);
- if (tpacpi_pdev)
- platform_device_unregister(tpacpi_pdev);
- if (tp_features.sensors_pdrv_attrs_registered)
- tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
- if (tp_features.platform_drv_attrs_registered)
- tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
- if (tp_features.sensors_pdrv_registered)
- platform_driver_unregister(&tpacpi_hwmon_pdriver);
- if (tp_features.platform_drv_registered)
- platform_driver_unregister(&tpacpi_pdriver);
- if (proc_dir)
- remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
- if (tpacpi_wq)
- destroy_workqueue(tpacpi_wq);
- kfree(thinkpad_id.bios_version_str);
- kfree(thinkpad_id.ec_version_str);
- kfree(thinkpad_id.model_str);
- kfree(thinkpad_id.nummodel_str);
- }
- static int __init thinkpad_acpi_module_init(void)
- {
- int ret, i;
- tpacpi_lifecycle = TPACPI_LIFE_INIT;
- /* Driver-level probe */
- ret = get_thinkpad_model_data(&thinkpad_id);
- if (ret) {
- pr_err("unable to get DMI data: %d\n", ret);
- thinkpad_acpi_module_exit();
- return ret;
- }
- ret = probe_for_thinkpad();
- if (ret) {
- thinkpad_acpi_module_exit();
- return ret;
- }
- /* Driver initialization */
- thinkpad_acpi_init_banner();
- tpacpi_check_outdated_fw();
- TPACPI_ACPIHANDLE_INIT(ecrd);
- TPACPI_ACPIHANDLE_INIT(ecwr);
- tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
- if (!tpacpi_wq) {
- thinkpad_acpi_module_exit();
- return -ENOMEM;
- }
- proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
- if (!proc_dir) {
- pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
- thinkpad_acpi_module_exit();
- return -ENODEV;
- }
- ret = platform_driver_register(&tpacpi_pdriver);
- if (ret) {
- pr_err("unable to register main platform driver\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tp_features.platform_drv_registered = 1;
- ret = platform_driver_register(&tpacpi_hwmon_pdriver);
- if (ret) {
- pr_err("unable to register hwmon platform driver\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tp_features.sensors_pdrv_registered = 1;
- ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
- if (!ret) {
- tp_features.platform_drv_attrs_registered = 1;
- ret = tpacpi_create_driver_attributes(
- &tpacpi_hwmon_pdriver.driver);
- }
- if (ret) {
- pr_err("unable to create sysfs driver attributes\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tp_features.sensors_pdrv_attrs_registered = 1;
- /* Device initialization */
- tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
- NULL, 0);
- if (IS_ERR(tpacpi_pdev)) {
- ret = PTR_ERR(tpacpi_pdev);
- tpacpi_pdev = NULL;
- pr_err("unable to register platform device\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tpacpi_sensors_pdev = platform_device_register_simple(
- TPACPI_HWMON_DRVR_NAME,
- -1, NULL, 0);
- if (IS_ERR(tpacpi_sensors_pdev)) {
- ret = PTR_ERR(tpacpi_sensors_pdev);
- tpacpi_sensors_pdev = NULL;
- pr_err("unable to register hwmon platform device\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- tp_features.sensors_pdev_attrs_registered = 1;
- tpacpi_hwmon = hwmon_device_register_with_groups(
- &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL);
- if (IS_ERR(tpacpi_hwmon)) {
- ret = PTR_ERR(tpacpi_hwmon);
- tpacpi_hwmon = NULL;
- pr_err("unable to register hwmon device\n");
- thinkpad_acpi_module_exit();
- return ret;
- }
- mutex_init(&tpacpi_inputdev_send_mutex);
- tpacpi_inputdev = input_allocate_device();
- if (!tpacpi_inputdev) {
- thinkpad_acpi_module_exit();
- return -ENOMEM;
- } else {
- /* Prepare input device, but don't register */
- tpacpi_inputdev->name = "ThinkPad Extra Buttons";
- tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
- tpacpi_inputdev->id.bustype = BUS_HOST;
- tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
- tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
- tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
- tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
- }
- /* Init subdriver dependencies */
- tpacpi_detect_brightness_capabilities();
- /* Init subdrivers */
- for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
- ret = ibm_init(&ibms_init[i]);
- if (ret >= 0 && *ibms_init[i].param)
- ret = ibms_init[i].data->write(ibms_init[i].param);
- if (ret < 0) {
- thinkpad_acpi_module_exit();
- return ret;
- }
- }
- tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
- ret = input_register_device(tpacpi_inputdev);
- if (ret < 0) {
- pr_err("unable to register input device\n");
- thinkpad_acpi_module_exit();
- return ret;
- } else {
- tp_features.input_device_registered = 1;
- }
- return 0;
- }
- MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
- /*
- * This will autoload the driver in almost every ThinkPad
- * in widespread use.
- *
- * Only _VERY_ old models, like the 240, 240x and 570 lack
- * the HKEY event interface.
- */
- MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
- /*
- * DMI matching for module autoloading
- *
- * See http://thinkwiki.org/wiki/List_of_DMI_IDs
- * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
- *
- * Only models listed in thinkwiki will be supported, so add yours
- * if it is not there yet.
- */
- #define IBM_BIOS_MODULE_ALIAS(__type) \
- MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
- /* Ancient thinkpad BIOSes have to be identified by
- * BIOS type or model number, and there are far less
- * BIOS types than model numbers... */
- IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
- MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
- MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
- MODULE_DESCRIPTION(TPACPI_DESC);
- MODULE_VERSION(TPACPI_VERSION);
- MODULE_LICENSE("GPL");
- module_init(thinkpad_acpi_module_init);
- module_exit(thinkpad_acpi_module_exit);
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