pac7302.c 27 KB

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  1. /*
  2. * Pixart PAC7302 driver
  3. *
  4. * Copyright (C) 2008-2012 Jean-Francois Moine <http://moinejf.free.fr>
  5. * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
  6. *
  7. * Separated from Pixart PAC7311 library by Márton Németh
  8. * Camera button input handling by Márton Németh <nm127@freemail.hu>
  9. * Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu>
  10. *
  11. * This program is free software; you can redistribute it and/or modify
  12. * it under the terms of the GNU General Public License as published by
  13. * the Free Software Foundation; either version 2 of the License, or
  14. * any later version.
  15. *
  16. * This program is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU General Public License for more details.
  20. */
  21. /*
  22. * Some documentation about various registers as determined by trial and error.
  23. *
  24. * Register page 0:
  25. *
  26. * Address Description
  27. * 0x01 Red balance control
  28. * 0x02 Green balance control
  29. * 0x03 Blue balance control
  30. * The Windows driver uses a quadratic approach to map
  31. * the settable values (0-200) on register values:
  32. * min=0x20, default=0x40, max=0x80
  33. * 0x0f-0x20 Color and saturation control
  34. * 0xa2-0xab Brightness, contrast and gamma control
  35. * 0xb6 Sharpness control (bits 0-4)
  36. *
  37. * Register page 1:
  38. *
  39. * Address Description
  40. * 0x78 Global control, bit 6 controls the LED (inverted)
  41. * 0x80 Compression balance, 2 interesting settings:
  42. * 0x0f Default
  43. * 0x50 Values >= this switch the camera to a lower compression,
  44. * using the same table for both luminance and chrominance.
  45. * This gives a sharper picture. Only usable when running
  46. * at < 15 fps! Note currently the driver does not use this
  47. * as the quality gain is small and the generated JPG-s are
  48. * only understood by v4l-utils >= 0.8.9
  49. *
  50. * Register page 3:
  51. *
  52. * Address Description
  53. * 0x02 Clock divider 3-63, fps = 90 / val. Must be a multiple of 3 on
  54. * the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
  55. * 0x03 Variable framerate ctrl reg2==3: 0 -> ~30 fps, 255 -> ~22fps
  56. * 0x04 Another var framerate ctrl reg2==3, reg3==0: 0 -> ~30 fps,
  57. * 63 -> ~27 fps, the 2 msb's must always be 1 !!
  58. * 0x05 Another var framerate ctrl reg2==3, reg3==0, reg4==0xc0:
  59. * 1 -> ~30 fps, 2 -> ~20 fps
  60. * 0x0e Exposure bits 0-7, 0-448, 0 = use full frame time
  61. * 0x0f Exposure bit 8, 0-448, 448 = no exposure at all
  62. * 0x10 Gain 0-31
  63. * 0x12 Another gain 0-31, unlike 0x10 this one seems to start with an
  64. * amplification value of 1 rather then 0 at its lowest setting
  65. * 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
  66. * 0x80 Another framerate control, best left at 1, moving it from 1 to
  67. * 2 causes the framerate to become 3/4th of what it was, and
  68. * also seems to cause pixel averaging, resulting in an effective
  69. * resolution of 320x240 and thus a much blockier image
  70. *
  71. * The registers are accessed in the following functions:
  72. *
  73. * Page | Register | Function
  74. * -----+------------+---------------------------------------------------
  75. * 0 | 0x01 | setredbalance()
  76. * 0 | 0x03 | setbluebalance()
  77. * 0 | 0x0f..0x20 | setcolors()
  78. * 0 | 0xa2..0xab | setbrightcont()
  79. * 0 | 0xb6 | setsharpness()
  80. * 0 | 0xc6 | setwhitebalance()
  81. * 0 | 0xdc | setbrightcont(), setcolors()
  82. * 3 | 0x02 | setexposure()
  83. * 3 | 0x10, 0x12 | setgain()
  84. * 3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip()
  85. * 3 | 0x21 | sethvflip()
  86. */
  87. #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  88. #include <linux/input.h>
  89. #include "gspca.h"
  90. /* Include pac common sof detection functions */
  91. #include "pac_common.h"
  92. #define PAC7302_RGB_BALANCE_MIN 0
  93. #define PAC7302_RGB_BALANCE_MAX 200
  94. #define PAC7302_RGB_BALANCE_DEFAULT 100
  95. #define PAC7302_GAIN_DEFAULT 15
  96. #define PAC7302_GAIN_KNEE 42
  97. #define PAC7302_EXPOSURE_DEFAULT 66 /* 33 ms / 30 fps */
  98. #define PAC7302_EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
  99. MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, Thomas Kaiser thomas@kaiser-linux.li");
  100. MODULE_DESCRIPTION("Pixart PAC7302");
  101. MODULE_LICENSE("GPL");
  102. struct sd {
  103. struct gspca_dev gspca_dev; /* !! must be the first item */
  104. struct { /* brightness / contrast cluster */
  105. struct v4l2_ctrl *brightness;
  106. struct v4l2_ctrl *contrast;
  107. };
  108. struct v4l2_ctrl *saturation;
  109. struct v4l2_ctrl *white_balance;
  110. struct v4l2_ctrl *red_balance;
  111. struct v4l2_ctrl *blue_balance;
  112. struct { /* flip cluster */
  113. struct v4l2_ctrl *hflip;
  114. struct v4l2_ctrl *vflip;
  115. };
  116. struct v4l2_ctrl *sharpness;
  117. u8 flags;
  118. #define FL_HFLIP 0x01 /* mirrored by default */
  119. #define FL_VFLIP 0x02 /* vertical flipped by default */
  120. u8 sof_read;
  121. s8 autogain_ignore_frames;
  122. atomic_t avg_lum;
  123. };
  124. static const struct v4l2_pix_format vga_mode[] = {
  125. {640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
  126. .bytesperline = 640,
  127. .sizeimage = 640 * 480 * 3 / 8 + 590,
  128. .colorspace = V4L2_COLORSPACE_JPEG,
  129. },
  130. };
  131. #define LOAD_PAGE3 255
  132. #define END_OF_SEQUENCE 0
  133. static const u8 init_7302[] = {
  134. /* index,value */
  135. 0xff, 0x01, /* page 1 */
  136. 0x78, 0x00, /* deactivate */
  137. 0xff, 0x01,
  138. 0x78, 0x40, /* led off */
  139. };
  140. static const u8 start_7302[] = {
  141. /* index, len, [value]* */
  142. 0xff, 1, 0x00, /* page 0 */
  143. 0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80,
  144. 0x00, 0x00, 0x00, 0x00,
  145. 0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00,
  146. 0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7,
  147. 0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11,
  148. 0x26, 2, 0xaa, 0xaa,
  149. 0x2e, 1, 0x31,
  150. 0x38, 1, 0x01,
  151. 0x3a, 3, 0x14, 0xff, 0x5a,
  152. 0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11,
  153. 0x00, 0x54, 0x11,
  154. 0x55, 1, 0x00,
  155. 0x62, 4, 0x10, 0x1e, 0x1e, 0x18,
  156. 0x6b, 1, 0x00,
  157. 0x6e, 3, 0x08, 0x06, 0x00,
  158. 0x72, 3, 0x00, 0xff, 0x00,
  159. 0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c,
  160. 0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50,
  161. 0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00,
  162. 0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9,
  163. 0xd2, 0xeb,
  164. 0xaf, 1, 0x02,
  165. 0xb5, 2, 0x08, 0x08,
  166. 0xb8, 2, 0x08, 0x88,
  167. 0xc4, 4, 0xae, 0x01, 0x04, 0x01,
  168. 0xcc, 1, 0x00,
  169. 0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9,
  170. 0xc1, 0xd7, 0xec,
  171. 0xdc, 1, 0x01,
  172. 0xff, 1, 0x01, /* page 1 */
  173. 0x12, 3, 0x02, 0x00, 0x01,
  174. 0x3e, 2, 0x00, 0x00,
  175. 0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2,
  176. 0x7c, 1, 0x00,
  177. 0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20,
  178. 0x02, 0x00,
  179. 0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04,
  180. 0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
  181. 0x07, 0x00, 0x01, 0x07, 0x04, 0x01,
  182. 0xd8, 1, 0x01,
  183. 0xdb, 2, 0x00, 0x01,
  184. 0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00,
  185. 0xe6, 4, 0x00, 0x00, 0x00, 0x01,
  186. 0xeb, 1, 0x00,
  187. 0xff, 1, 0x02, /* page 2 */
  188. 0x22, 1, 0x00,
  189. 0xff, 1, 0x03, /* page 3 */
  190. 0, LOAD_PAGE3, /* load the page 3 */
  191. 0x11, 1, 0x01,
  192. 0xff, 1, 0x02, /* page 2 */
  193. 0x13, 1, 0x00,
  194. 0x22, 4, 0x1f, 0xa4, 0xf0, 0x96,
  195. 0x27, 2, 0x14, 0x0c,
  196. 0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22,
  197. 0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
  198. 0x6e, 1, 0x08,
  199. 0xff, 1, 0x01, /* page 1 */
  200. 0x78, 1, 0x00,
  201. 0, END_OF_SEQUENCE /* end of sequence */
  202. };
  203. #define SKIP 0xaa
  204. /* page 3 - the value SKIP says skip the index - see reg_w_page() */
  205. static const u8 page3_7302[] = {
  206. 0x90, 0x40, 0x03, 0x00, 0xc0, 0x01, 0x14, 0x16,
  207. 0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
  208. 0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  209. 0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
  210. 0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
  211. 0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
  212. 0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
  213. 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  214. 0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
  215. SKIP, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
  216. 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  217. 0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
  218. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  219. 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
  220. 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
  221. 0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
  222. 0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
  223. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  224. 0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
  225. 0x00
  226. };
  227. static void reg_w_buf(struct gspca_dev *gspca_dev,
  228. u8 index,
  229. const u8 *buffer, int len)
  230. {
  231. int ret;
  232. if (gspca_dev->usb_err < 0)
  233. return;
  234. memcpy(gspca_dev->usb_buf, buffer, len);
  235. ret = usb_control_msg(gspca_dev->dev,
  236. usb_sndctrlpipe(gspca_dev->dev, 0),
  237. 0, /* request */
  238. USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  239. 0, /* value */
  240. index, gspca_dev->usb_buf, len,
  241. 500);
  242. if (ret < 0) {
  243. pr_err("reg_w_buf failed i: %02x error %d\n",
  244. index, ret);
  245. gspca_dev->usb_err = ret;
  246. }
  247. }
  248. static void reg_w(struct gspca_dev *gspca_dev,
  249. u8 index,
  250. u8 value)
  251. {
  252. int ret;
  253. if (gspca_dev->usb_err < 0)
  254. return;
  255. gspca_dev->usb_buf[0] = value;
  256. ret = usb_control_msg(gspca_dev->dev,
  257. usb_sndctrlpipe(gspca_dev->dev, 0),
  258. 0, /* request */
  259. USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  260. 0, index, gspca_dev->usb_buf, 1,
  261. 500);
  262. if (ret < 0) {
  263. pr_err("reg_w() failed i: %02x v: %02x error %d\n",
  264. index, value, ret);
  265. gspca_dev->usb_err = ret;
  266. }
  267. }
  268. static void reg_w_seq(struct gspca_dev *gspca_dev,
  269. const u8 *seq, int len)
  270. {
  271. while (--len >= 0) {
  272. reg_w(gspca_dev, seq[0], seq[1]);
  273. seq += 2;
  274. }
  275. }
  276. /* load the beginning of a page */
  277. static void reg_w_page(struct gspca_dev *gspca_dev,
  278. const u8 *page, int len)
  279. {
  280. int index;
  281. int ret = 0;
  282. if (gspca_dev->usb_err < 0)
  283. return;
  284. for (index = 0; index < len; index++) {
  285. if (page[index] == SKIP) /* skip this index */
  286. continue;
  287. gspca_dev->usb_buf[0] = page[index];
  288. ret = usb_control_msg(gspca_dev->dev,
  289. usb_sndctrlpipe(gspca_dev->dev, 0),
  290. 0, /* request */
  291. USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
  292. 0, index, gspca_dev->usb_buf, 1,
  293. 500);
  294. if (ret < 0) {
  295. pr_err("reg_w_page() failed i: %02x v: %02x error %d\n",
  296. index, page[index], ret);
  297. gspca_dev->usb_err = ret;
  298. break;
  299. }
  300. }
  301. }
  302. /* output a variable sequence */
  303. static void reg_w_var(struct gspca_dev *gspca_dev,
  304. const u8 *seq,
  305. const u8 *page3, unsigned int page3_len)
  306. {
  307. int index, len;
  308. for (;;) {
  309. index = *seq++;
  310. len = *seq++;
  311. switch (len) {
  312. case END_OF_SEQUENCE:
  313. return;
  314. case LOAD_PAGE3:
  315. reg_w_page(gspca_dev, page3, page3_len);
  316. break;
  317. default:
  318. if (len > USB_BUF_SZ) {
  319. gspca_err(gspca_dev, "Incorrect variable sequence\n");
  320. return;
  321. }
  322. while (len > 0) {
  323. if (len < 8) {
  324. reg_w_buf(gspca_dev,
  325. index, seq, len);
  326. seq += len;
  327. break;
  328. }
  329. reg_w_buf(gspca_dev, index, seq, 8);
  330. seq += 8;
  331. index += 8;
  332. len -= 8;
  333. }
  334. }
  335. }
  336. /* not reached */
  337. }
  338. /* this function is called at probe time for pac7302 */
  339. static int sd_config(struct gspca_dev *gspca_dev,
  340. const struct usb_device_id *id)
  341. {
  342. struct sd *sd = (struct sd *) gspca_dev;
  343. struct cam *cam;
  344. cam = &gspca_dev->cam;
  345. cam->cam_mode = vga_mode; /* only 640x480 */
  346. cam->nmodes = ARRAY_SIZE(vga_mode);
  347. sd->flags = id->driver_info;
  348. return 0;
  349. }
  350. static void setbrightcont(struct gspca_dev *gspca_dev)
  351. {
  352. struct sd *sd = (struct sd *) gspca_dev;
  353. int i, v;
  354. static const u8 max[10] =
  355. {0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
  356. 0xd4, 0xec};
  357. static const u8 delta[10] =
  358. {0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
  359. 0x11, 0x0b};
  360. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  361. for (i = 0; i < 10; i++) {
  362. v = max[i];
  363. v += (sd->brightness->val - (s32)sd->brightness->maximum)
  364. * 150 / (s32)sd->brightness->maximum; /* 200 ? */
  365. v -= delta[i] * sd->contrast->val / (s32)sd->contrast->maximum;
  366. if (v < 0)
  367. v = 0;
  368. else if (v > 0xff)
  369. v = 0xff;
  370. reg_w(gspca_dev, 0xa2 + i, v);
  371. }
  372. reg_w(gspca_dev, 0xdc, 0x01);
  373. }
  374. static void setcolors(struct gspca_dev *gspca_dev)
  375. {
  376. struct sd *sd = (struct sd *) gspca_dev;
  377. int i, v;
  378. static const int a[9] =
  379. {217, -212, 0, -101, 170, -67, -38, -315, 355};
  380. static const int b[9] =
  381. {19, 106, 0, 19, 106, 1, 19, 106, 1};
  382. reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
  383. reg_w(gspca_dev, 0x11, 0x01);
  384. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  385. for (i = 0; i < 9; i++) {
  386. v = a[i] * sd->saturation->val / (s32)sd->saturation->maximum;
  387. v += b[i];
  388. reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
  389. reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
  390. }
  391. reg_w(gspca_dev, 0xdc, 0x01);
  392. }
  393. static void setwhitebalance(struct gspca_dev *gspca_dev)
  394. {
  395. struct sd *sd = (struct sd *) gspca_dev;
  396. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  397. reg_w(gspca_dev, 0xc6, sd->white_balance->val);
  398. reg_w(gspca_dev, 0xdc, 0x01);
  399. }
  400. static u8 rgbbalance_ctrl_to_reg_value(s32 rgb_ctrl_val)
  401. {
  402. const unsigned int k = 1000; /* precision factor */
  403. unsigned int norm;
  404. /* Normed value [0...k] */
  405. norm = k * (rgb_ctrl_val - PAC7302_RGB_BALANCE_MIN)
  406. / (PAC7302_RGB_BALANCE_MAX - PAC7302_RGB_BALANCE_MIN);
  407. /* Qudratic apporach improves control at small (register) values: */
  408. return 64 * norm * norm / (k*k) + 32 * norm / k + 32;
  409. /* Y = 64*X*X + 32*X + 32
  410. * => register values 0x20-0x80; Windows driver uses these limits */
  411. /* NOTE: for full value range (0x00-0xff) use
  412. * Y = 254*X*X + X
  413. * => 254 * norm * norm / (k*k) + 1 * norm / k */
  414. }
  415. static void setredbalance(struct gspca_dev *gspca_dev)
  416. {
  417. struct sd *sd = (struct sd *) gspca_dev;
  418. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  419. reg_w(gspca_dev, 0x01,
  420. rgbbalance_ctrl_to_reg_value(sd->red_balance->val));
  421. reg_w(gspca_dev, 0xdc, 0x01);
  422. }
  423. static void setbluebalance(struct gspca_dev *gspca_dev)
  424. {
  425. struct sd *sd = (struct sd *) gspca_dev;
  426. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  427. reg_w(gspca_dev, 0x03,
  428. rgbbalance_ctrl_to_reg_value(sd->blue_balance->val));
  429. reg_w(gspca_dev, 0xdc, 0x01);
  430. }
  431. static void setgain(struct gspca_dev *gspca_dev)
  432. {
  433. u8 reg10, reg12;
  434. if (gspca_dev->gain->val < 32) {
  435. reg10 = gspca_dev->gain->val;
  436. reg12 = 0;
  437. } else {
  438. reg10 = 31;
  439. reg12 = gspca_dev->gain->val - 31;
  440. }
  441. reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
  442. reg_w(gspca_dev, 0x10, reg10);
  443. reg_w(gspca_dev, 0x12, reg12);
  444. /* load registers to sensor (Bit 0, auto clear) */
  445. reg_w(gspca_dev, 0x11, 0x01);
  446. }
  447. static void setexposure(struct gspca_dev *gspca_dev)
  448. {
  449. u8 clockdiv;
  450. u16 exposure;
  451. /*
  452. * Register 2 of frame 3 contains the clock divider configuring the
  453. * no fps according to the formula: 90 / reg. sd->exposure is the
  454. * desired exposure time in 0.5 ms.
  455. */
  456. clockdiv = (90 * gspca_dev->exposure->val + 1999) / 2000;
  457. /*
  458. * Note clockdiv = 3 also works, but when running at 30 fps, depending
  459. * on the scene being recorded, the camera switches to another
  460. * quantization table for certain JPEG blocks, and we don't know how
  461. * to decompress these blocks. So we cap the framerate at 15 fps.
  462. */
  463. if (clockdiv < 6)
  464. clockdiv = 6;
  465. else if (clockdiv > 63)
  466. clockdiv = 63;
  467. /*
  468. * Register 2 MUST be a multiple of 3, except when between 6 and 12?
  469. * Always round up, otherwise we cannot get the desired frametime
  470. * using the partial frame time exposure control.
  471. */
  472. if (clockdiv < 6 || clockdiv > 12)
  473. clockdiv = ((clockdiv + 2) / 3) * 3;
  474. /*
  475. * frame exposure time in ms = 1000 * clockdiv / 90 ->
  476. * exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90)
  477. */
  478. exposure = (gspca_dev->exposure->val * 45 * 448) / (1000 * clockdiv);
  479. /* 0 = use full frametime, 448 = no exposure, reverse it */
  480. exposure = 448 - exposure;
  481. reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
  482. reg_w(gspca_dev, 0x02, clockdiv);
  483. reg_w(gspca_dev, 0x0e, exposure & 0xff);
  484. reg_w(gspca_dev, 0x0f, exposure >> 8);
  485. /* load registers to sensor (Bit 0, auto clear) */
  486. reg_w(gspca_dev, 0x11, 0x01);
  487. }
  488. static void sethvflip(struct gspca_dev *gspca_dev)
  489. {
  490. struct sd *sd = (struct sd *) gspca_dev;
  491. u8 data, hflip, vflip;
  492. hflip = sd->hflip->val;
  493. if (sd->flags & FL_HFLIP)
  494. hflip = !hflip;
  495. vflip = sd->vflip->val;
  496. if (sd->flags & FL_VFLIP)
  497. vflip = !vflip;
  498. reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
  499. data = (hflip ? 0x08 : 0x00) | (vflip ? 0x04 : 0x00);
  500. reg_w(gspca_dev, 0x21, data);
  501. /* load registers to sensor (Bit 0, auto clear) */
  502. reg_w(gspca_dev, 0x11, 0x01);
  503. }
  504. static void setsharpness(struct gspca_dev *gspca_dev)
  505. {
  506. struct sd *sd = (struct sd *) gspca_dev;
  507. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  508. reg_w(gspca_dev, 0xb6, sd->sharpness->val);
  509. reg_w(gspca_dev, 0xdc, 0x01);
  510. }
  511. /* this function is called at probe and resume time for pac7302 */
  512. static int sd_init(struct gspca_dev *gspca_dev)
  513. {
  514. reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
  515. return gspca_dev->usb_err;
  516. }
  517. static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
  518. {
  519. struct gspca_dev *gspca_dev =
  520. container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
  521. struct sd *sd = (struct sd *)gspca_dev;
  522. gspca_dev->usb_err = 0;
  523. if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
  524. /* when switching to autogain set defaults to make sure
  525. we are on a valid point of the autogain gain /
  526. exposure knee graph, and give this change time to
  527. take effect before doing autogain. */
  528. gspca_dev->exposure->val = PAC7302_EXPOSURE_DEFAULT;
  529. gspca_dev->gain->val = PAC7302_GAIN_DEFAULT;
  530. sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
  531. }
  532. if (!gspca_dev->streaming)
  533. return 0;
  534. switch (ctrl->id) {
  535. case V4L2_CID_BRIGHTNESS:
  536. setbrightcont(gspca_dev);
  537. break;
  538. case V4L2_CID_SATURATION:
  539. setcolors(gspca_dev);
  540. break;
  541. case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
  542. setwhitebalance(gspca_dev);
  543. break;
  544. case V4L2_CID_RED_BALANCE:
  545. setredbalance(gspca_dev);
  546. break;
  547. case V4L2_CID_BLUE_BALANCE:
  548. setbluebalance(gspca_dev);
  549. break;
  550. case V4L2_CID_AUTOGAIN:
  551. if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
  552. setexposure(gspca_dev);
  553. if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
  554. setgain(gspca_dev);
  555. break;
  556. case V4L2_CID_HFLIP:
  557. sethvflip(gspca_dev);
  558. break;
  559. case V4L2_CID_SHARPNESS:
  560. setsharpness(gspca_dev);
  561. break;
  562. default:
  563. return -EINVAL;
  564. }
  565. return gspca_dev->usb_err;
  566. }
  567. static const struct v4l2_ctrl_ops sd_ctrl_ops = {
  568. .s_ctrl = sd_s_ctrl,
  569. };
  570. /* this function is called at probe time */
  571. static int sd_init_controls(struct gspca_dev *gspca_dev)
  572. {
  573. struct sd *sd = (struct sd *) gspca_dev;
  574. struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
  575. gspca_dev->vdev.ctrl_handler = hdl;
  576. v4l2_ctrl_handler_init(hdl, 12);
  577. sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  578. V4L2_CID_BRIGHTNESS, 0, 32, 1, 16);
  579. sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  580. V4L2_CID_CONTRAST, 0, 255, 1, 127);
  581. sd->saturation = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  582. V4L2_CID_SATURATION, 0, 255, 1, 127);
  583. sd->white_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  584. V4L2_CID_WHITE_BALANCE_TEMPERATURE,
  585. 0, 255, 1, 55);
  586. sd->red_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  587. V4L2_CID_RED_BALANCE,
  588. PAC7302_RGB_BALANCE_MIN,
  589. PAC7302_RGB_BALANCE_MAX,
  590. 1, PAC7302_RGB_BALANCE_DEFAULT);
  591. sd->blue_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  592. V4L2_CID_BLUE_BALANCE,
  593. PAC7302_RGB_BALANCE_MIN,
  594. PAC7302_RGB_BALANCE_MAX,
  595. 1, PAC7302_RGB_BALANCE_DEFAULT);
  596. gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  597. V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
  598. gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  599. V4L2_CID_EXPOSURE, 0, 1023, 1,
  600. PAC7302_EXPOSURE_DEFAULT);
  601. gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  602. V4L2_CID_GAIN, 0, 62, 1,
  603. PAC7302_GAIN_DEFAULT);
  604. sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  605. V4L2_CID_HFLIP, 0, 1, 1, 0);
  606. sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  607. V4L2_CID_VFLIP, 0, 1, 1, 0);
  608. sd->sharpness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
  609. V4L2_CID_SHARPNESS, 0, 15, 1, 8);
  610. if (hdl->error) {
  611. pr_err("Could not initialize controls\n");
  612. return hdl->error;
  613. }
  614. v4l2_ctrl_cluster(2, &sd->brightness);
  615. v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
  616. v4l2_ctrl_cluster(2, &sd->hflip);
  617. return 0;
  618. }
  619. /* -- start the camera -- */
  620. static int sd_start(struct gspca_dev *gspca_dev)
  621. {
  622. struct sd *sd = (struct sd *) gspca_dev;
  623. reg_w_var(gspca_dev, start_7302,
  624. page3_7302, sizeof(page3_7302));
  625. sd->sof_read = 0;
  626. sd->autogain_ignore_frames = 0;
  627. atomic_set(&sd->avg_lum, 270 + sd->brightness->val);
  628. /* start stream */
  629. reg_w(gspca_dev, 0xff, 0x01);
  630. reg_w(gspca_dev, 0x78, 0x01);
  631. return gspca_dev->usb_err;
  632. }
  633. static void sd_stopN(struct gspca_dev *gspca_dev)
  634. {
  635. /* stop stream */
  636. reg_w(gspca_dev, 0xff, 0x01);
  637. reg_w(gspca_dev, 0x78, 0x00);
  638. }
  639. /* called on streamoff with alt 0 and on disconnect for pac7302 */
  640. static void sd_stop0(struct gspca_dev *gspca_dev)
  641. {
  642. if (!gspca_dev->present)
  643. return;
  644. reg_w(gspca_dev, 0xff, 0x01);
  645. reg_w(gspca_dev, 0x78, 0x40);
  646. }
  647. static void do_autogain(struct gspca_dev *gspca_dev)
  648. {
  649. struct sd *sd = (struct sd *) gspca_dev;
  650. int avg_lum = atomic_read(&sd->avg_lum);
  651. int desired_lum;
  652. const int deadzone = 30;
  653. if (sd->autogain_ignore_frames < 0)
  654. return;
  655. if (sd->autogain_ignore_frames > 0) {
  656. sd->autogain_ignore_frames--;
  657. } else {
  658. desired_lum = 270 + sd->brightness->val;
  659. if (gspca_expo_autogain(gspca_dev, avg_lum, desired_lum,
  660. deadzone, PAC7302_GAIN_KNEE,
  661. PAC7302_EXPOSURE_KNEE))
  662. sd->autogain_ignore_frames =
  663. PAC_AUTOGAIN_IGNORE_FRAMES;
  664. }
  665. }
  666. /* JPEG header */
  667. static const u8 jpeg_header[] = {
  668. 0xff, 0xd8, /* SOI: Start of Image */
  669. 0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
  670. 0x00, 0x11, /* length = 17 bytes (including this length field) */
  671. 0x08, /* Precision: 8 */
  672. 0x02, 0x80, /* height = 640 (image rotated) */
  673. 0x01, 0xe0, /* width = 480 */
  674. 0x03, /* Number of image components: 3 */
  675. 0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
  676. 0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
  677. 0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
  678. 0xff, 0xda, /* SOS: Start Of Scan */
  679. 0x00, 0x0c, /* length = 12 bytes (including this length field) */
  680. 0x03, /* number of components: 3 */
  681. 0x01, 0x00, /* selector 1, table 0x00 */
  682. 0x02, 0x11, /* selector 2, table 0x11 */
  683. 0x03, 0x11, /* selector 3, table 0x11 */
  684. 0x00, 0x3f, /* Spectral selection: 0 .. 63 */
  685. 0x00 /* Successive approximation: 0 */
  686. };
  687. /* this function is run at interrupt level */
  688. static void sd_pkt_scan(struct gspca_dev *gspca_dev,
  689. u8 *data, /* isoc packet */
  690. int len) /* iso packet length */
  691. {
  692. struct sd *sd = (struct sd *) gspca_dev;
  693. u8 *image;
  694. u8 *sof;
  695. sof = pac_find_sof(gspca_dev, &sd->sof_read, data, len);
  696. if (sof) {
  697. int n, lum_offset, footer_length;
  698. /*
  699. * 6 bytes after the FF D9 EOF marker a number of lumination
  700. * bytes are send corresponding to different parts of the
  701. * image, the 14th and 15th byte after the EOF seem to
  702. * correspond to the center of the image.
  703. */
  704. lum_offset = 61 + sizeof pac_sof_marker;
  705. footer_length = 74;
  706. /* Finish decoding current frame */
  707. n = (sof - data) - (footer_length + sizeof pac_sof_marker);
  708. if (n < 0) {
  709. gspca_dev->image_len += n;
  710. n = 0;
  711. } else {
  712. gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
  713. }
  714. image = gspca_dev->image;
  715. if (image != NULL
  716. && image[gspca_dev->image_len - 2] == 0xff
  717. && image[gspca_dev->image_len - 1] == 0xd9)
  718. gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
  719. n = sof - data;
  720. len -= n;
  721. data = sof;
  722. /* Get average lumination */
  723. if (gspca_dev->last_packet_type == LAST_PACKET &&
  724. n >= lum_offset)
  725. atomic_set(&sd->avg_lum, data[-lum_offset] +
  726. data[-lum_offset + 1]);
  727. /* Start the new frame with the jpeg header */
  728. /* The PAC7302 has the image rotated 90 degrees */
  729. gspca_frame_add(gspca_dev, FIRST_PACKET,
  730. jpeg_header, sizeof jpeg_header);
  731. }
  732. gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
  733. }
  734. #ifdef CONFIG_VIDEO_ADV_DEBUG
  735. static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
  736. const struct v4l2_dbg_register *reg)
  737. {
  738. u8 index;
  739. u8 value;
  740. /*
  741. * reg->reg: bit0..15: reserved for register index (wIndex is 16bit
  742. * long on the USB bus)
  743. */
  744. if (reg->match.addr == 0 &&
  745. (reg->reg < 0x000000ff) &&
  746. (reg->val <= 0x000000ff)
  747. ) {
  748. /* Currently writing to page 0 is only supported. */
  749. /* reg_w() only supports 8bit index */
  750. index = reg->reg;
  751. value = reg->val;
  752. /*
  753. * Note that there shall be no access to other page
  754. * by any other function between the page switch and
  755. * the actual register write.
  756. */
  757. reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
  758. reg_w(gspca_dev, index, value);
  759. reg_w(gspca_dev, 0xdc, 0x01);
  760. }
  761. return gspca_dev->usb_err;
  762. }
  763. #endif
  764. #if IS_ENABLED(CONFIG_INPUT)
  765. static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
  766. u8 *data, /* interrupt packet data */
  767. int len) /* interrupt packet length */
  768. {
  769. int ret = -EINVAL;
  770. u8 data0, data1;
  771. if (len == 2) {
  772. data0 = data[0];
  773. data1 = data[1];
  774. if ((data0 == 0x00 && data1 == 0x11) ||
  775. (data0 == 0x22 && data1 == 0x33) ||
  776. (data0 == 0x44 && data1 == 0x55) ||
  777. (data0 == 0x66 && data1 == 0x77) ||
  778. (data0 == 0x88 && data1 == 0x99) ||
  779. (data0 == 0xaa && data1 == 0xbb) ||
  780. (data0 == 0xcc && data1 == 0xdd) ||
  781. (data0 == 0xee && data1 == 0xff)) {
  782. input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
  783. input_sync(gspca_dev->input_dev);
  784. input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
  785. input_sync(gspca_dev->input_dev);
  786. ret = 0;
  787. }
  788. }
  789. return ret;
  790. }
  791. #endif
  792. /* sub-driver description for pac7302 */
  793. static const struct sd_desc sd_desc = {
  794. .name = KBUILD_MODNAME,
  795. .config = sd_config,
  796. .init = sd_init,
  797. .init_controls = sd_init_controls,
  798. .start = sd_start,
  799. .stopN = sd_stopN,
  800. .stop0 = sd_stop0,
  801. .pkt_scan = sd_pkt_scan,
  802. .dq_callback = do_autogain,
  803. #ifdef CONFIG_VIDEO_ADV_DEBUG
  804. .set_register = sd_dbg_s_register,
  805. #endif
  806. #if IS_ENABLED(CONFIG_INPUT)
  807. .int_pkt_scan = sd_int_pkt_scan,
  808. #endif
  809. };
  810. /* -- module initialisation -- */
  811. static const struct usb_device_id device_table[] = {
  812. {USB_DEVICE(0x06f8, 0x3009)},
  813. {USB_DEVICE(0x06f8, 0x301b)},
  814. {USB_DEVICE(0x093a, 0x2620)},
  815. {USB_DEVICE(0x093a, 0x2621)},
  816. {USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
  817. {USB_DEVICE(0x093a, 0x2623), .driver_info = FL_VFLIP},
  818. {USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
  819. {USB_DEVICE(0x093a, 0x2625)},
  820. {USB_DEVICE(0x093a, 0x2626)},
  821. {USB_DEVICE(0x093a, 0x2627), .driver_info = FL_VFLIP},
  822. {USB_DEVICE(0x093a, 0x2628)},
  823. {USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP},
  824. {USB_DEVICE(0x093a, 0x262a)},
  825. {USB_DEVICE(0x093a, 0x262c)},
  826. {USB_DEVICE(0x145f, 0x013c)},
  827. {USB_DEVICE(0x1ae7, 0x2001)}, /* SpeedLink Snappy Mic SL-6825-SBK */
  828. {}
  829. };
  830. MODULE_DEVICE_TABLE(usb, device_table);
  831. /* -- device connect -- */
  832. static int sd_probe(struct usb_interface *intf,
  833. const struct usb_device_id *id)
  834. {
  835. return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
  836. THIS_MODULE);
  837. }
  838. static struct usb_driver sd_driver = {
  839. .name = KBUILD_MODNAME,
  840. .id_table = device_table,
  841. .probe = sd_probe,
  842. .disconnect = gspca_disconnect,
  843. #ifdef CONFIG_PM
  844. .suspend = gspca_suspend,
  845. .resume = gspca_resume,
  846. .reset_resume = gspca_resume,
  847. #endif
  848. };
  849. module_usb_driver(sd_driver);