n810.c 8.9 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * n810.c -- SoC audio for Nokia N810
  4. *
  5. * Copyright (C) 2008 Nokia Corporation
  6. *
  7. * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
  8. */
  9. #include <linux/clk.h>
  10. #include <linux/i2c.h>
  11. #include <linux/platform_device.h>
  12. #include <sound/core.h>
  13. #include <sound/pcm.h>
  14. #include <sound/soc.h>
  15. #include <asm/mach-types.h>
  16. #include <linux/gpio.h>
  17. #include <linux/module.h>
  18. #include <linux/platform_data/asoc-ti-mcbsp.h>
  19. #include "omap-mcbsp.h"
  20. #define N810_HEADSET_AMP_GPIO 10
  21. #define N810_SPEAKER_AMP_GPIO 101
  22. enum {
  23. N810_JACK_DISABLED,
  24. N810_JACK_HP,
  25. N810_JACK_HS,
  26. N810_JACK_MIC,
  27. };
  28. static struct clk *sys_clkout2;
  29. static struct clk *sys_clkout2_src;
  30. static struct clk *func96m_clk;
  31. static int n810_spk_func;
  32. static int n810_jack_func;
  33. static int n810_dmic_func;
  34. static void n810_ext_control(struct snd_soc_dapm_context *dapm)
  35. {
  36. int hp = 0, line1l = 0;
  37. switch (n810_jack_func) {
  38. case N810_JACK_HS:
  39. line1l = 1;
  40. fallthrough;
  41. case N810_JACK_HP:
  42. hp = 1;
  43. break;
  44. case N810_JACK_MIC:
  45. line1l = 1;
  46. break;
  47. }
  48. snd_soc_dapm_mutex_lock(dapm);
  49. if (n810_spk_func)
  50. snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  51. else
  52. snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  53. if (hp)
  54. snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  55. else
  56. snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  57. if (line1l)
  58. snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
  59. else
  60. snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
  61. if (n810_dmic_func)
  62. snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  63. else
  64. snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  65. snd_soc_dapm_sync_unlocked(dapm);
  66. snd_soc_dapm_mutex_unlock(dapm);
  67. }
  68. static int n810_startup(struct snd_pcm_substream *substream)
  69. {
  70. struct snd_pcm_runtime *runtime = substream->runtime;
  71. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  72. snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
  73. n810_ext_control(&rtd->card->dapm);
  74. return clk_prepare_enable(sys_clkout2);
  75. }
  76. static void n810_shutdown(struct snd_pcm_substream *substream)
  77. {
  78. clk_disable_unprepare(sys_clkout2);
  79. }
  80. static int n810_hw_params(struct snd_pcm_substream *substream,
  81. struct snd_pcm_hw_params *params)
  82. {
  83. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  84. struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  85. int err;
  86. /* Set the codec system clock for DAC and ADC */
  87. err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
  88. SND_SOC_CLOCK_IN);
  89. return err;
  90. }
  91. static const struct snd_soc_ops n810_ops = {
  92. .startup = n810_startup,
  93. .hw_params = n810_hw_params,
  94. .shutdown = n810_shutdown,
  95. };
  96. static int n810_get_spk(struct snd_kcontrol *kcontrol,
  97. struct snd_ctl_elem_value *ucontrol)
  98. {
  99. ucontrol->value.enumerated.item[0] = n810_spk_func;
  100. return 0;
  101. }
  102. static int n810_set_spk(struct snd_kcontrol *kcontrol,
  103. struct snd_ctl_elem_value *ucontrol)
  104. {
  105. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  106. if (n810_spk_func == ucontrol->value.enumerated.item[0])
  107. return 0;
  108. n810_spk_func = ucontrol->value.enumerated.item[0];
  109. n810_ext_control(&card->dapm);
  110. return 1;
  111. }
  112. static int n810_get_jack(struct snd_kcontrol *kcontrol,
  113. struct snd_ctl_elem_value *ucontrol)
  114. {
  115. ucontrol->value.enumerated.item[0] = n810_jack_func;
  116. return 0;
  117. }
  118. static int n810_set_jack(struct snd_kcontrol *kcontrol,
  119. struct snd_ctl_elem_value *ucontrol)
  120. {
  121. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  122. if (n810_jack_func == ucontrol->value.enumerated.item[0])
  123. return 0;
  124. n810_jack_func = ucontrol->value.enumerated.item[0];
  125. n810_ext_control(&card->dapm);
  126. return 1;
  127. }
  128. static int n810_get_input(struct snd_kcontrol *kcontrol,
  129. struct snd_ctl_elem_value *ucontrol)
  130. {
  131. ucontrol->value.enumerated.item[0] = n810_dmic_func;
  132. return 0;
  133. }
  134. static int n810_set_input(struct snd_kcontrol *kcontrol,
  135. struct snd_ctl_elem_value *ucontrol)
  136. {
  137. struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  138. if (n810_dmic_func == ucontrol->value.enumerated.item[0])
  139. return 0;
  140. n810_dmic_func = ucontrol->value.enumerated.item[0];
  141. n810_ext_control(&card->dapm);
  142. return 1;
  143. }
  144. static int n810_spk_event(struct snd_soc_dapm_widget *w,
  145. struct snd_kcontrol *k, int event)
  146. {
  147. if (SND_SOC_DAPM_EVENT_ON(event))
  148. gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
  149. else
  150. gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
  151. return 0;
  152. }
  153. static int n810_jack_event(struct snd_soc_dapm_widget *w,
  154. struct snd_kcontrol *k, int event)
  155. {
  156. if (SND_SOC_DAPM_EVENT_ON(event))
  157. gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
  158. else
  159. gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
  160. return 0;
  161. }
  162. static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
  163. SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
  164. SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
  165. SND_SOC_DAPM_MIC("DMic", NULL),
  166. SND_SOC_DAPM_MIC("HS Mic", NULL),
  167. };
  168. static const struct snd_soc_dapm_route audio_map[] = {
  169. {"Headphone Jack", NULL, "HPLOUT"},
  170. {"Headphone Jack", NULL, "HPROUT"},
  171. {"Ext Spk", NULL, "LLOUT"},
  172. {"Ext Spk", NULL, "RLOUT"},
  173. {"DMic Rate 64", NULL, "DMic"},
  174. {"DMic", NULL, "Mic Bias"},
  175. /*
  176. * Note that the mic bias is coming from Retu/Vilma and we don't have
  177. * control over it atm. The analog HS mic is not working. <- TODO
  178. */
  179. {"LINE1L", NULL, "HS Mic"},
  180. };
  181. static const char *spk_function[] = {"Off", "On"};
  182. static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
  183. static const char *input_function[] = {"ADC", "Digital Mic"};
  184. static const struct soc_enum n810_enum[] = {
  185. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
  186. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
  187. SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
  188. };
  189. static const struct snd_kcontrol_new aic33_n810_controls[] = {
  190. SOC_ENUM_EXT("Speaker Function", n810_enum[0],
  191. n810_get_spk, n810_set_spk),
  192. SOC_ENUM_EXT("Jack Function", n810_enum[1],
  193. n810_get_jack, n810_set_jack),
  194. SOC_ENUM_EXT("Input Select", n810_enum[2],
  195. n810_get_input, n810_set_input),
  196. };
  197. /* Digital audio interface glue - connects codec <--> CPU */
  198. SND_SOC_DAILINK_DEFS(aic33,
  199. DAILINK_COMP_ARRAY(COMP_CPU("48076000.mcbsp")),
  200. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
  201. "tlv320aic3x-hifi")),
  202. DAILINK_COMP_ARRAY(COMP_PLATFORM("48076000.mcbsp")));
  203. static struct snd_soc_dai_link n810_dai = {
  204. .name = "TLV320AIC33",
  205. .stream_name = "AIC33",
  206. .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  207. SND_SOC_DAIFMT_CBM_CFM,
  208. .ops = &n810_ops,
  209. SND_SOC_DAILINK_REG(aic33),
  210. };
  211. /* Audio machine driver */
  212. static struct snd_soc_card snd_soc_n810 = {
  213. .name = "N810",
  214. .owner = THIS_MODULE,
  215. .dai_link = &n810_dai,
  216. .num_links = 1,
  217. .controls = aic33_n810_controls,
  218. .num_controls = ARRAY_SIZE(aic33_n810_controls),
  219. .dapm_widgets = aic33_dapm_widgets,
  220. .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
  221. .dapm_routes = audio_map,
  222. .num_dapm_routes = ARRAY_SIZE(audio_map),
  223. .fully_routed = true,
  224. };
  225. static struct platform_device *n810_snd_device;
  226. static int __init n810_soc_init(void)
  227. {
  228. int err;
  229. struct device *dev;
  230. if (!of_have_populated_dt() ||
  231. (!of_machine_is_compatible("nokia,n810") &&
  232. !of_machine_is_compatible("nokia,n810-wimax")))
  233. return -ENODEV;
  234. n810_snd_device = platform_device_alloc("soc-audio", -1);
  235. if (!n810_snd_device)
  236. return -ENOMEM;
  237. platform_set_drvdata(n810_snd_device, &snd_soc_n810);
  238. err = platform_device_add(n810_snd_device);
  239. if (err)
  240. goto err1;
  241. dev = &n810_snd_device->dev;
  242. sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
  243. if (IS_ERR(sys_clkout2_src)) {
  244. dev_err(dev, "Could not get sys_clkout2_src clock\n");
  245. err = PTR_ERR(sys_clkout2_src);
  246. goto err2;
  247. }
  248. sys_clkout2 = clk_get(dev, "sys_clkout2");
  249. if (IS_ERR(sys_clkout2)) {
  250. dev_err(dev, "Could not get sys_clkout2\n");
  251. err = PTR_ERR(sys_clkout2);
  252. goto err3;
  253. }
  254. /*
  255. * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
  256. * 96 MHz as its parent in order to get 12 MHz
  257. */
  258. func96m_clk = clk_get(dev, "func_96m_ck");
  259. if (IS_ERR(func96m_clk)) {
  260. dev_err(dev, "Could not get func 96M clock\n");
  261. err = PTR_ERR(func96m_clk);
  262. goto err4;
  263. }
  264. clk_set_parent(sys_clkout2_src, func96m_clk);
  265. clk_set_rate(sys_clkout2, 12000000);
  266. if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
  267. (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
  268. err = -EINVAL;
  269. goto err4;
  270. }
  271. gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
  272. gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
  273. return 0;
  274. err4:
  275. clk_put(sys_clkout2);
  276. err3:
  277. clk_put(sys_clkout2_src);
  278. err2:
  279. platform_device_del(n810_snd_device);
  280. err1:
  281. platform_device_put(n810_snd_device);
  282. return err;
  283. }
  284. static void __exit n810_soc_exit(void)
  285. {
  286. gpio_free(N810_SPEAKER_AMP_GPIO);
  287. gpio_free(N810_HEADSET_AMP_GPIO);
  288. clk_put(sys_clkout2_src);
  289. clk_put(sys_clkout2);
  290. clk_put(func96m_clk);
  291. platform_device_unregister(n810_snd_device);
  292. }
  293. module_init(n810_soc_init);
  294. module_exit(n810_soc_exit);
  295. MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
  296. MODULE_DESCRIPTION("ALSA SoC Nokia N810");
  297. MODULE_LICENSE("GPL");