n810.c 9.4 KB

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  1. /*
  2. * n810.c -- SoC audio for Nokia N810
  3. *
  4. * Copyright (C) 2008 Nokia Corporation
  5. *
  6. * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License
  10. * version 2 as published by the Free Software Foundation.
  11. *
  12. * This program is distributed in the hope that it will be useful, but
  13. * WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15. * General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20. * 02110-1301 USA
  21. *
  22. */
  23. #include <linux/clk.h>
  24. #include <linux/i2c.h>
  25. #include <linux/platform_device.h>
  26. #include <sound/core.h>
  27. #include <sound/pcm.h>
  28. #include <sound/soc.h>
  29. #include <asm/mach-types.h>
  30. #include <linux/gpio.h>
  31. #include <linux/module.h>
  32. #include <linux/platform_data/asoc-ti-mcbsp.h>
  33. #include "omap-mcbsp.h"
  34. #define N810_HEADSET_AMP_GPIO 10
  35. #define N810_SPEAKER_AMP_GPIO 101
  36. enum {
  37. N810_JACK_DISABLED,
  38. N810_JACK_HP,
  39. N810_JACK_HS,
  40. N810_JACK_MIC,
  41. };
  42. static struct clk *sys_clkout2;
  43. static struct clk *sys_clkout2_src;
  44. static struct clk *func96m_clk;
  45. static int n810_spk_func;
  46. static int n810_jack_func;
  47. static int n810_dmic_func;
  48. static void n810_ext_control(struct snd_soc_dapm_context *dapm)
  49. {
  50. int hp = 0, line1l = 0;
  51. switch (n810_jack_func) {
  52. case N810_JACK_HS:
  53. line1l = 1;
  54. case N810_JACK_HP:
  55. hp = 1;
  56. break;
  57. case N810_JACK_MIC:
  58. line1l = 1;
  59. break;
  60. }
  61. snd_soc_dapm_mutex_lock(dapm);
  62. if (n810_spk_func)
  63. snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  64. else
  65. snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  66. if (hp)
  67. snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  68. else
  69. snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  70. if (line1l)
  71. snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
  72. else
  73. snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
  74. if (n810_dmic_func)
  75. snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  76. else
  77. snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  78. snd_soc_dapm_sync_unlocked(dapm);
  79. snd_soc_dapm_mutex_unlock(dapm);
  80. }
  81. static int n810_startup(struct snd_pcm_substream *substream)
  82. {
  83. struct snd_pcm_runtime *runtime = substream->runtime;
  84. struct snd_soc_pcm_runtime *rtd = substream->private_data;
  85. snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
  86. n810_ext_control(&rtd->card->dapm);
  87. return clk_prepare_enable(sys_clkout2);
  88. }
  89. static void n810_shutdown(struct snd_pcm_substream *substream)
  90. {
  91. clk_disable_unprepare(sys_clkout2);
  92. }
  93. static int n810_hw_params(struct snd_pcm_substream *substream,
  94. struct snd_pcm_hw_params *params)
  95. {
  96. struct snd_soc_pcm_runtime *rtd = substream->private_data;
  97. struct snd_soc_dai *codec_dai = rtd->codec_dai;
  98. int err;
  99. /* Set the codec system clock for DAC and ADC */
  100. err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
  101. SND_SOC_CLOCK_IN);
  102. return err;
  103. }
  104. static const struct snd_soc_ops n810_ops = {
  105. .startup = n810_startup,
  106. .hw_params = n810_hw_params,
  107. .shutdown = n810_shutdown,
  108. };
  109. static int n810_get_spk(struct snd_kcontrol *kcontrol,
  110. struct snd_ctl_elem_value *ucontrol)
  111. {
  112. ucontrol->value.enumerated.item[0] = n810_spk_func;
  113. return 0;
  114. }
  115. static int n810_set_spk(struct snd_kcontrol *kcontrol,
  116. struct snd_ctl_elem_value *ucontrol)
  117. {
  118. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  119. if (n810_spk_func == ucontrol->value.enumerated.item[0])
  120. return 0;
  121. n810_spk_func = ucontrol->value.enumerated.item[0];
  122. n810_ext_control(&card->dapm);
  123. return 1;
  124. }
  125. static int n810_get_jack(struct snd_kcontrol *kcontrol,
  126. struct snd_ctl_elem_value *ucontrol)
  127. {
  128. ucontrol->value.enumerated.item[0] = n810_jack_func;
  129. return 0;
  130. }
  131. static int n810_set_jack(struct snd_kcontrol *kcontrol,
  132. struct snd_ctl_elem_value *ucontrol)
  133. {
  134. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  135. if (n810_jack_func == ucontrol->value.enumerated.item[0])
  136. return 0;
  137. n810_jack_func = ucontrol->value.enumerated.item[0];
  138. n810_ext_control(&card->dapm);
  139. return 1;
  140. }
  141. static int n810_get_input(struct snd_kcontrol *kcontrol,
  142. struct snd_ctl_elem_value *ucontrol)
  143. {
  144. ucontrol->value.enumerated.item[0] = n810_dmic_func;
  145. return 0;
  146. }
  147. static int n810_set_input(struct snd_kcontrol *kcontrol,
  148. struct snd_ctl_elem_value *ucontrol)
  149. {
  150. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  151. if (n810_dmic_func == ucontrol->value.enumerated.item[0])
  152. return 0;
  153. n810_dmic_func = ucontrol->value.enumerated.item[0];
  154. n810_ext_control(&card->dapm);
  155. return 1;
  156. }
  157. static int n810_spk_event(struct snd_soc_dapm_widget *w,
  158. struct snd_kcontrol *k, int event)
  159. {
  160. if (SND_SOC_DAPM_EVENT_ON(event))
  161. gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
  162. else
  163. gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
  164. return 0;
  165. }
  166. static int n810_jack_event(struct snd_soc_dapm_widget *w,
  167. struct snd_kcontrol *k, int event)
  168. {
  169. if (SND_SOC_DAPM_EVENT_ON(event))
  170. gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
  171. else
  172. gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
  173. return 0;
  174. }
  175. static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
  176. SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
  177. SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
  178. SND_SOC_DAPM_MIC("DMic", NULL),
  179. SND_SOC_DAPM_MIC("HS Mic", NULL),
  180. };
  181. static const struct snd_soc_dapm_route audio_map[] = {
  182. {"Headphone Jack", NULL, "HPLOUT"},
  183. {"Headphone Jack", NULL, "HPROUT"},
  184. {"Ext Spk", NULL, "LLOUT"},
  185. {"Ext Spk", NULL, "RLOUT"},
  186. {"DMic Rate 64", NULL, "DMic"},
  187. {"DMic", NULL, "Mic Bias"},
  188. /*
  189. * Note that the mic bias is coming from Retu/Vilma and we don't have
  190. * control over it atm. The analog HS mic is not working. <- TODO
  191. */
  192. {"LINE1L", NULL, "HS Mic"},
  193. };
  194. static const char *spk_function[] = {"Off", "On"};
  195. static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
  196. static const char *input_function[] = {"ADC", "Digital Mic"};
  197. static const struct soc_enum n810_enum[] = {
  198. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
  199. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
  200. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
  201. };
  202. static const struct snd_kcontrol_new aic33_n810_controls[] = {
  203. SOC_ENUM_EXT("Speaker Function", n810_enum[0],
  204. n810_get_spk, n810_set_spk),
  205. SOC_ENUM_EXT("Jack Function", n810_enum[1],
  206. n810_get_jack, n810_set_jack),
  207. SOC_ENUM_EXT("Input Select", n810_enum[2],
  208. n810_get_input, n810_set_input),
  209. };
  210. /* Digital audio interface glue - connects codec <--> CPU */
  211. static struct snd_soc_dai_link n810_dai = {
  212. .name = "TLV320AIC33",
  213. .stream_name = "AIC33",
  214. .cpu_dai_name = "48076000.mcbsp",
  215. .platform_name = "48076000.mcbsp",
  216. .codec_name = "tlv320aic3x-codec.1-0018",
  217. .codec_dai_name = "tlv320aic3x-hifi",
  218. .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  219. SND_SOC_DAIFMT_CBM_CFM,
  220. .ops = &n810_ops,
  221. };
  222. /* Audio machine driver */
  223. static struct snd_soc_card snd_soc_n810 = {
  224. .name = "N810",
  225. .owner = THIS_MODULE,
  226. .dai_link = &n810_dai,
  227. .num_links = 1,
  228. .controls = aic33_n810_controls,
  229. .num_controls = ARRAY_SIZE(aic33_n810_controls),
  230. .dapm_widgets = aic33_dapm_widgets,
  231. .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
  232. .dapm_routes = audio_map,
  233. .num_dapm_routes = ARRAY_SIZE(audio_map),
  234. .fully_routed = true,
  235. };
  236. static struct platform_device *n810_snd_device;
  237. static int __init n810_soc_init(void)
  238. {
  239. int err;
  240. struct device *dev;
  241. if (!of_have_populated_dt() ||
  242. (!of_machine_is_compatible("nokia,n810") &&
  243. !of_machine_is_compatible("nokia,n810-wimax")))
  244. return -ENODEV;
  245. n810_snd_device = platform_device_alloc("soc-audio", -1);
  246. if (!n810_snd_device)
  247. return -ENOMEM;
  248. platform_set_drvdata(n810_snd_device, &snd_soc_n810);
  249. err = platform_device_add(n810_snd_device);
  250. if (err)
  251. goto err1;
  252. dev = &n810_snd_device->dev;
  253. sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
  254. if (IS_ERR(sys_clkout2_src)) {
  255. dev_err(dev, "Could not get sys_clkout2_src clock\n");
  256. err = PTR_ERR(sys_clkout2_src);
  257. goto err2;
  258. }
  259. sys_clkout2 = clk_get(dev, "sys_clkout2");
  260. if (IS_ERR(sys_clkout2)) {
  261. dev_err(dev, "Could not get sys_clkout2\n");
  262. err = PTR_ERR(sys_clkout2);
  263. goto err3;
  264. }
  265. /*
  266. * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
  267. * 96 MHz as its parent in order to get 12 MHz
  268. */
  269. func96m_clk = clk_get(dev, "func_96m_ck");
  270. if (IS_ERR(func96m_clk)) {
  271. dev_err(dev, "Could not get func 96M clock\n");
  272. err = PTR_ERR(func96m_clk);
  273. goto err4;
  274. }
  275. clk_set_parent(sys_clkout2_src, func96m_clk);
  276. clk_set_rate(sys_clkout2, 12000000);
  277. if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
  278. (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
  279. err = -EINVAL;
  280. goto err4;
  281. }
  282. gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
  283. gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
  284. return 0;
  285. err4:
  286. clk_put(sys_clkout2);
  287. err3:
  288. clk_put(sys_clkout2_src);
  289. err2:
  290. platform_device_del(n810_snd_device);
  291. err1:
  292. platform_device_put(n810_snd_device);
  293. return err;
  294. }
  295. static void __exit n810_soc_exit(void)
  296. {
  297. gpio_free(N810_SPEAKER_AMP_GPIO);
  298. gpio_free(N810_HEADSET_AMP_GPIO);
  299. clk_put(sys_clkout2_src);
  300. clk_put(sys_clkout2);
  301. clk_put(func96m_clk);
  302. platform_device_unregister(n810_snd_device);
  303. }
  304. module_init(n810_soc_init);
  305. module_exit(n810_soc_exit);
  306. MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
  307. MODULE_DESCRIPTION("ALSA SoC Nokia N810");
  308. MODULE_LICENSE("GPL");