ak4535.c 13 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * ak4535.c -- AK4535 ALSA Soc Audio driver
  4. *
  5. * Copyright 2005 Openedhand Ltd.
  6. *
  7. * Author: Richard Purdie <[email protected]>
  8. *
  9. * Based on wm8753.c by Liam Girdwood
  10. */
  11. #include <linux/module.h>
  12. #include <linux/moduleparam.h>
  13. #include <linux/init.h>
  14. #include <linux/delay.h>
  15. #include <linux/pm.h>
  16. #include <linux/i2c.h>
  17. #include <linux/regmap.h>
  18. #include <linux/slab.h>
  19. #include <sound/core.h>
  20. #include <sound/pcm.h>
  21. #include <sound/pcm_params.h>
  22. #include <sound/soc.h>
  23. #include <sound/initval.h>
  24. #include "ak4535.h"
  25. /* codec private data */
  26. struct ak4535_priv {
  27. struct regmap *regmap;
  28. unsigned int sysclk;
  29. };
  30. /*
  31. * ak4535 register cache
  32. */
  33. static const struct reg_default ak4535_reg_defaults[] = {
  34. { 0, 0x00 },
  35. { 1, 0x80 },
  36. { 2, 0x00 },
  37. { 3, 0x03 },
  38. { 4, 0x02 },
  39. { 5, 0x00 },
  40. { 6, 0x11 },
  41. { 7, 0x01 },
  42. { 8, 0x00 },
  43. { 9, 0x40 },
  44. { 10, 0x36 },
  45. { 11, 0x10 },
  46. { 12, 0x00 },
  47. { 13, 0x00 },
  48. { 14, 0x57 },
  49. };
  50. static bool ak4535_volatile(struct device *dev, unsigned int reg)
  51. {
  52. switch (reg) {
  53. case AK4535_STATUS:
  54. return true;
  55. default:
  56. return false;
  57. }
  58. }
  59. static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
  60. static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
  61. static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
  62. static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
  63. static const char *ak4535_mic_select[] = {"Internal", "External"};
  64. static const struct soc_enum ak4535_enum[] = {
  65. SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
  66. SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
  67. SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
  68. SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
  69. SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
  70. };
  71. static const struct snd_kcontrol_new ak4535_snd_controls[] = {
  72. SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
  73. SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
  74. SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
  75. SOC_ENUM("Headphone Output", ak4535_enum[2]),
  76. SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
  77. SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
  78. SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
  79. SOC_ENUM("Mic Select", ak4535_enum[4]),
  80. SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
  81. SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
  82. SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
  83. SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
  84. SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
  85. SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
  86. SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
  87. SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
  88. SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
  89. SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
  90. SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
  91. };
  92. /* Mono 1 Mixer */
  93. static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
  94. SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
  95. SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
  96. };
  97. /* Stereo Mixer */
  98. static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
  99. SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
  100. SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
  101. SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
  102. };
  103. /* Input Mixer */
  104. static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
  105. SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
  106. SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
  107. };
  108. /* Input mux */
  109. static const struct snd_kcontrol_new ak4535_input_mux_control =
  110. SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
  111. /* HP L switch */
  112. static const struct snd_kcontrol_new ak4535_hpl_control =
  113. SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
  114. /* HP R switch */
  115. static const struct snd_kcontrol_new ak4535_hpr_control =
  116. SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
  117. /* mono 2 switch */
  118. static const struct snd_kcontrol_new ak4535_mono2_control =
  119. SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
  120. /* Line out switch */
  121. static const struct snd_kcontrol_new ak4535_line_control =
  122. SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
  123. /* ak4535 dapm widgets */
  124. static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
  125. SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
  126. &ak4535_stereo_mixer_controls[0],
  127. ARRAY_SIZE(ak4535_stereo_mixer_controls)),
  128. SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
  129. &ak4535_mono1_mixer_controls[0],
  130. ARRAY_SIZE(ak4535_mono1_mixer_controls)),
  131. SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
  132. &ak4535_input_mixer_controls[0],
  133. ARRAY_SIZE(ak4535_input_mixer_controls)),
  134. SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
  135. &ak4535_input_mux_control),
  136. SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
  137. SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
  138. &ak4535_mono2_control),
  139. /* speaker powersave bit */
  140. SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
  141. SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
  142. &ak4535_line_control),
  143. SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
  144. &ak4535_hpl_control),
  145. SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
  146. &ak4535_hpr_control),
  147. SND_SOC_DAPM_OUTPUT("LOUT"),
  148. SND_SOC_DAPM_OUTPUT("HPL"),
  149. SND_SOC_DAPM_OUTPUT("ROUT"),
  150. SND_SOC_DAPM_OUTPUT("HPR"),
  151. SND_SOC_DAPM_OUTPUT("SPP"),
  152. SND_SOC_DAPM_OUTPUT("SPN"),
  153. SND_SOC_DAPM_OUTPUT("MOUT1"),
  154. SND_SOC_DAPM_OUTPUT("MOUT2"),
  155. SND_SOC_DAPM_OUTPUT("MICOUT"),
  156. SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
  157. SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
  158. SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
  159. SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
  160. SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
  161. SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
  162. SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
  163. SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
  164. SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
  165. SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
  166. SND_SOC_DAPM_INPUT("MICIN"),
  167. SND_SOC_DAPM_INPUT("MICEXT"),
  168. SND_SOC_DAPM_INPUT("AUX"),
  169. SND_SOC_DAPM_INPUT("MIN"),
  170. SND_SOC_DAPM_INPUT("AIN"),
  171. };
  172. static const struct snd_soc_dapm_route ak4535_audio_map[] = {
  173. /*stereo mixer */
  174. {"Stereo Mixer", "Playback Switch", "DAC"},
  175. {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
  176. {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
  177. /* mono1 mixer */
  178. {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
  179. {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
  180. /* Mic */
  181. {"Mic", NULL, "AIN"},
  182. {"Input Mux", "Internal", "Mic Int Bias"},
  183. {"Input Mux", "External", "Mic Ext Bias"},
  184. {"Mic Int Bias", NULL, "MICIN"},
  185. {"Mic Ext Bias", NULL, "MICEXT"},
  186. {"MICOUT", NULL, "Input Mux"},
  187. /* line out */
  188. {"LOUT", NULL, "Line Out Enable"},
  189. {"ROUT", NULL, "Line Out Enable"},
  190. {"Line Out Enable", "Switch", "Line Out"},
  191. {"Line Out", NULL, "Stereo Mixer"},
  192. /* mono1 out */
  193. {"MOUT1", NULL, "Mono Out"},
  194. {"Mono Out", NULL, "Mono1 Mixer"},
  195. /* left HP */
  196. {"HPL", NULL, "Left HP Enable"},
  197. {"Left HP Enable", "Switch", "HP L Amp"},
  198. {"HP L Amp", NULL, "Stereo Mixer"},
  199. /* right HP */
  200. {"HPR", NULL, "Right HP Enable"},
  201. {"Right HP Enable", "Switch", "HP R Amp"},
  202. {"HP R Amp", NULL, "Stereo Mixer"},
  203. /* speaker */
  204. {"SPP", NULL, "Speaker Enable"},
  205. {"SPN", NULL, "Speaker Enable"},
  206. {"Speaker Enable", "Switch", "Spk Amp"},
  207. {"Spk Amp", NULL, "MIN"},
  208. /* mono 2 */
  209. {"MOUT2", NULL, "Mono 2 Enable"},
  210. {"Mono 2 Enable", "Switch", "Stereo Mixer"},
  211. /* Aux In */
  212. {"Aux In", NULL, "AUX"},
  213. /* ADC */
  214. {"ADC", NULL, "Input Mixer"},
  215. {"Input Mixer", "Mic Capture Switch", "Mic"},
  216. {"Input Mixer", "Aux Capture Switch", "Aux In"},
  217. };
  218. static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
  219. int clk_id, unsigned int freq, int dir)
  220. {
  221. struct snd_soc_component *component = codec_dai->component;
  222. struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
  223. ak4535->sysclk = freq;
  224. return 0;
  225. }
  226. static int ak4535_hw_params(struct snd_pcm_substream *substream,
  227. struct snd_pcm_hw_params *params,
  228. struct snd_soc_dai *dai)
  229. {
  230. struct snd_soc_component *component = dai->component;
  231. struct ak4535_priv *ak4535 = snd_soc_component_get_drvdata(component);
  232. u8 mode2 = snd_soc_component_read(component, AK4535_MODE2) & ~(0x3 << 5);
  233. int rate = params_rate(params), fs = 256;
  234. if (rate)
  235. fs = ak4535->sysclk / rate;
  236. /* set fs */
  237. switch (fs) {
  238. case 1024:
  239. mode2 |= (0x2 << 5);
  240. break;
  241. case 512:
  242. mode2 |= (0x1 << 5);
  243. break;
  244. case 256:
  245. break;
  246. }
  247. /* set rate */
  248. snd_soc_component_write(component, AK4535_MODE2, mode2);
  249. return 0;
  250. }
  251. static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
  252. unsigned int fmt)
  253. {
  254. struct snd_soc_component *component = codec_dai->component;
  255. u8 mode1 = 0;
  256. /* interface format */
  257. switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
  258. case SND_SOC_DAIFMT_I2S:
  259. mode1 = 0x0002;
  260. break;
  261. case SND_SOC_DAIFMT_LEFT_J:
  262. mode1 = 0x0001;
  263. break;
  264. default:
  265. return -EINVAL;
  266. }
  267. /* use 32 fs for BCLK to save power */
  268. mode1 |= 0x4;
  269. snd_soc_component_write(component, AK4535_MODE1, mode1);
  270. return 0;
  271. }
  272. static int ak4535_mute(struct snd_soc_dai *dai, int mute, int direction)
  273. {
  274. struct snd_soc_component *component = dai->component;
  275. u16 mute_reg = snd_soc_component_read(component, AK4535_DAC);
  276. if (!mute)
  277. snd_soc_component_write(component, AK4535_DAC, mute_reg & ~0x20);
  278. else
  279. snd_soc_component_write(component, AK4535_DAC, mute_reg | 0x20);
  280. return 0;
  281. }
  282. static int ak4535_set_bias_level(struct snd_soc_component *component,
  283. enum snd_soc_bias_level level)
  284. {
  285. switch (level) {
  286. case SND_SOC_BIAS_ON:
  287. snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0);
  288. break;
  289. case SND_SOC_BIAS_PREPARE:
  290. snd_soc_component_update_bits(component, AK4535_DAC, 0x20, 0x20);
  291. break;
  292. case SND_SOC_BIAS_STANDBY:
  293. snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0x80);
  294. snd_soc_component_update_bits(component, AK4535_PM2, 0x80, 0);
  295. break;
  296. case SND_SOC_BIAS_OFF:
  297. snd_soc_component_update_bits(component, AK4535_PM1, 0x80, 0);
  298. break;
  299. }
  300. return 0;
  301. }
  302. #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
  303. SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
  304. SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
  305. static const struct snd_soc_dai_ops ak4535_dai_ops = {
  306. .hw_params = ak4535_hw_params,
  307. .set_fmt = ak4535_set_dai_fmt,
  308. .mute_stream = ak4535_mute,
  309. .set_sysclk = ak4535_set_dai_sysclk,
  310. .no_capture_mute = 1,
  311. };
  312. static struct snd_soc_dai_driver ak4535_dai = {
  313. .name = "ak4535-hifi",
  314. .playback = {
  315. .stream_name = "Playback",
  316. .channels_min = 1,
  317. .channels_max = 2,
  318. .rates = AK4535_RATES,
  319. .formats = SNDRV_PCM_FMTBIT_S16_LE,},
  320. .capture = {
  321. .stream_name = "Capture",
  322. .channels_min = 1,
  323. .channels_max = 2,
  324. .rates = AK4535_RATES,
  325. .formats = SNDRV_PCM_FMTBIT_S16_LE,},
  326. .ops = &ak4535_dai_ops,
  327. };
  328. static int ak4535_resume(struct snd_soc_component *component)
  329. {
  330. snd_soc_component_cache_sync(component);
  331. return 0;
  332. }
  333. static const struct regmap_config ak4535_regmap = {
  334. .reg_bits = 8,
  335. .val_bits = 8,
  336. .max_register = AK4535_STATUS,
  337. .volatile_reg = ak4535_volatile,
  338. .cache_type = REGCACHE_RBTREE,
  339. .reg_defaults = ak4535_reg_defaults,
  340. .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
  341. };
  342. static const struct snd_soc_component_driver soc_component_dev_ak4535 = {
  343. .resume = ak4535_resume,
  344. .set_bias_level = ak4535_set_bias_level,
  345. .controls = ak4535_snd_controls,
  346. .num_controls = ARRAY_SIZE(ak4535_snd_controls),
  347. .dapm_widgets = ak4535_dapm_widgets,
  348. .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
  349. .dapm_routes = ak4535_audio_map,
  350. .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
  351. .suspend_bias_off = 1,
  352. .idle_bias_on = 1,
  353. .use_pmdown_time = 1,
  354. .endianness = 1,
  355. };
  356. static int ak4535_i2c_probe(struct i2c_client *i2c)
  357. {
  358. struct ak4535_priv *ak4535;
  359. int ret;
  360. ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
  361. GFP_KERNEL);
  362. if (ak4535 == NULL)
  363. return -ENOMEM;
  364. ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
  365. if (IS_ERR(ak4535->regmap)) {
  366. ret = PTR_ERR(ak4535->regmap);
  367. dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
  368. return ret;
  369. }
  370. i2c_set_clientdata(i2c, ak4535);
  371. ret = devm_snd_soc_register_component(&i2c->dev,
  372. &soc_component_dev_ak4535, &ak4535_dai, 1);
  373. return ret;
  374. }
  375. static const struct i2c_device_id ak4535_i2c_id[] = {
  376. { "ak4535", 0 },
  377. { }
  378. };
  379. MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
  380. static struct i2c_driver ak4535_i2c_driver = {
  381. .driver = {
  382. .name = "ak4535",
  383. },
  384. .probe_new = ak4535_i2c_probe,
  385. .id_table = ak4535_i2c_id,
  386. };
  387. module_i2c_driver(ak4535_i2c_driver);
  388. MODULE_DESCRIPTION("Soc AK4535 driver");
  389. MODULE_AUTHOR("Richard Purdie");
  390. MODULE_LICENSE("GPL");