ad1836.c 11 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * Audio Codec driver supporting:
  4. * AD1835A, AD1836, AD1837A, AD1838A, AD1839A
  5. *
  6. * Copyright 2009-2011 Analog Devices Inc.
  7. */
  8. #include <linux/init.h>
  9. #include <linux/slab.h>
  10. #include <linux/module.h>
  11. #include <linux/kernel.h>
  12. #include <linux/device.h>
  13. #include <sound/core.h>
  14. #include <sound/pcm.h>
  15. #include <sound/pcm_params.h>
  16. #include <sound/initval.h>
  17. #include <sound/soc.h>
  18. #include <sound/tlv.h>
  19. #include <linux/spi/spi.h>
  20. #include <linux/regmap.h>
  21. #include "ad1836.h"
  22. enum ad1836_type {
  23. AD1835,
  24. AD1836,
  25. AD1838,
  26. };
  27. /* codec private data */
  28. struct ad1836_priv {
  29. enum ad1836_type type;
  30. struct regmap *regmap;
  31. };
  32. /*
  33. * AD1836 volume/mute/de-emphasis etc. controls
  34. */
  35. static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
  36. static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
  37. AD1836_DAC_CTRL1, 8, ad1836_deemp);
  38. #define AD1836_DAC_VOLUME(x) \
  39. SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
  40. AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
  41. #define AD1836_DAC_SWITCH(x) \
  42. SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
  43. AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  44. #define AD1836_ADC_SWITCH(x) \
  45. SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
  46. AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
  47. static const struct snd_kcontrol_new ad183x_dac_controls[] = {
  48. AD1836_DAC_VOLUME(1),
  49. AD1836_DAC_SWITCH(1),
  50. AD1836_DAC_VOLUME(2),
  51. AD1836_DAC_SWITCH(2),
  52. AD1836_DAC_VOLUME(3),
  53. AD1836_DAC_SWITCH(3),
  54. AD1836_DAC_VOLUME(4),
  55. AD1836_DAC_SWITCH(4),
  56. };
  57. static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
  58. SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  59. SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  60. SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  61. SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  62. };
  63. static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
  64. { "DAC1OUT", NULL, "DAC" },
  65. { "DAC2OUT", NULL, "DAC" },
  66. { "DAC3OUT", NULL, "DAC" },
  67. { "DAC4OUT", NULL, "DAC" },
  68. };
  69. static const struct snd_kcontrol_new ad183x_adc_controls[] = {
  70. AD1836_ADC_SWITCH(1),
  71. AD1836_ADC_SWITCH(2),
  72. AD1836_ADC_SWITCH(3),
  73. };
  74. static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
  75. SND_SOC_DAPM_INPUT("ADC1IN"),
  76. SND_SOC_DAPM_INPUT("ADC2IN"),
  77. };
  78. static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
  79. { "ADC", NULL, "ADC1IN" },
  80. { "ADC", NULL, "ADC2IN" },
  81. };
  82. static const struct snd_kcontrol_new ad183x_controls[] = {
  83. /* ADC high-pass filter */
  84. SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
  85. AD1836_ADC_HIGHPASS_FILTER, 1, 0),
  86. /* DAC de-emphasis */
  87. SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
  88. };
  89. static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
  90. SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
  91. AD1836_DAC_POWERDOWN, 1),
  92. SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  93. SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
  94. AD1836_ADC_POWERDOWN, 1, NULL, 0),
  95. };
  96. static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
  97. { "DAC", NULL, "ADC_PWR" },
  98. { "ADC", NULL, "ADC_PWR" },
  99. };
  100. static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
  101. static const struct snd_kcontrol_new ad1836_controls[] = {
  102. SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
  103. ad1836_in_tlv),
  104. };
  105. /*
  106. * DAI ops entries
  107. */
  108. static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
  109. unsigned int fmt)
  110. {
  111. switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
  112. /* at present, we support adc aux mode to interface with
  113. * blackfin sport tdm mode
  114. */
  115. case SND_SOC_DAIFMT_DSP_A:
  116. break;
  117. default:
  118. return -EINVAL;
  119. }
  120. switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
  121. case SND_SOC_DAIFMT_IB_IF:
  122. break;
  123. default:
  124. return -EINVAL;
  125. }
  126. switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  127. /* ALCLK,ABCLK are both output, AD1836 can only be master */
  128. case SND_SOC_DAIFMT_CBM_CFM:
  129. break;
  130. default:
  131. return -EINVAL;
  132. }
  133. return 0;
  134. }
  135. static int ad1836_hw_params(struct snd_pcm_substream *substream,
  136. struct snd_pcm_hw_params *params,
  137. struct snd_soc_dai *dai)
  138. {
  139. struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(dai->component);
  140. int word_len = 0;
  141. /* bit size */
  142. switch (params_width(params)) {
  143. case 16:
  144. word_len = AD1836_WORD_LEN_16;
  145. break;
  146. case 20:
  147. word_len = AD1836_WORD_LEN_20;
  148. break;
  149. case 24:
  150. case 32:
  151. word_len = AD1836_WORD_LEN_24;
  152. break;
  153. default:
  154. return -EINVAL;
  155. }
  156. regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
  157. AD1836_DAC_WORD_LEN_MASK,
  158. word_len << AD1836_DAC_WORD_LEN_OFFSET);
  159. regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
  160. AD1836_ADC_WORD_LEN_MASK,
  161. word_len << AD1836_ADC_WORD_OFFSET);
  162. return 0;
  163. }
  164. static const struct snd_soc_dai_ops ad1836_dai_ops = {
  165. .hw_params = ad1836_hw_params,
  166. .set_fmt = ad1836_set_dai_fmt,
  167. };
  168. #define AD183X_DAI(_name, num_dacs, num_adcs) \
  169. { \
  170. .name = _name "-hifi", \
  171. .playback = { \
  172. .stream_name = "Playback", \
  173. .channels_min = 2, \
  174. .channels_max = (num_dacs) * 2, \
  175. .rates = SNDRV_PCM_RATE_48000, \
  176. .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
  177. SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
  178. }, \
  179. .capture = { \
  180. .stream_name = "Capture", \
  181. .channels_min = 2, \
  182. .channels_max = (num_adcs) * 2, \
  183. .rates = SNDRV_PCM_RATE_48000, \
  184. .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
  185. SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
  186. }, \
  187. .ops = &ad1836_dai_ops, \
  188. }
  189. static struct snd_soc_dai_driver ad183x_dais[] = {
  190. [AD1835] = AD183X_DAI("ad1835", 4, 1),
  191. [AD1836] = AD183X_DAI("ad1836", 3, 2),
  192. [AD1838] = AD183X_DAI("ad1838", 3, 1),
  193. };
  194. #ifdef CONFIG_PM
  195. static int ad1836_suspend(struct snd_soc_component *component)
  196. {
  197. struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
  198. /* reset clock control mode */
  199. return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
  200. AD1836_ADC_SERFMT_MASK, 0);
  201. }
  202. static int ad1836_resume(struct snd_soc_component *component)
  203. {
  204. struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
  205. /* restore clock control mode */
  206. return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
  207. AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
  208. }
  209. #else
  210. #define ad1836_suspend NULL
  211. #define ad1836_resume NULL
  212. #endif
  213. static int ad1836_probe(struct snd_soc_component *component)
  214. {
  215. struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
  216. struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
  217. int num_dacs, num_adcs;
  218. int ret = 0;
  219. int i;
  220. num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
  221. num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
  222. /* default setting for ad1836 */
  223. /* de-emphasis: 48kHz, power-on dac */
  224. regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
  225. /* unmute dac channels */
  226. regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
  227. /* high-pass filter enable, power-on adc */
  228. regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
  229. /* unmute adc channles, adc aux mode */
  230. regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
  231. /* volume */
  232. for (i = 1; i <= num_dacs; ++i) {
  233. regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
  234. regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
  235. }
  236. if (ad1836->type == AD1836) {
  237. /* left/right diff:PGA/MUX */
  238. regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
  239. ret = snd_soc_add_component_controls(component, ad1836_controls,
  240. ARRAY_SIZE(ad1836_controls));
  241. if (ret)
  242. return ret;
  243. } else {
  244. regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
  245. }
  246. ret = snd_soc_add_component_controls(component, ad183x_dac_controls, num_dacs * 2);
  247. if (ret)
  248. return ret;
  249. ret = snd_soc_add_component_controls(component, ad183x_adc_controls, num_adcs);
  250. if (ret)
  251. return ret;
  252. ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
  253. if (ret)
  254. return ret;
  255. ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
  256. if (ret)
  257. return ret;
  258. ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
  259. if (ret)
  260. return ret;
  261. ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
  262. if (ret)
  263. return ret;
  264. return ret;
  265. }
  266. /* power down chip */
  267. static void ad1836_remove(struct snd_soc_component *component)
  268. {
  269. struct ad1836_priv *ad1836 = snd_soc_component_get_drvdata(component);
  270. /* reset clock control mode */
  271. regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
  272. AD1836_ADC_SERFMT_MASK, 0);
  273. }
  274. static const struct snd_soc_component_driver soc_component_dev_ad1836 = {
  275. .probe = ad1836_probe,
  276. .remove = ad1836_remove,
  277. .suspend = ad1836_suspend,
  278. .resume = ad1836_resume,
  279. .controls = ad183x_controls,
  280. .num_controls = ARRAY_SIZE(ad183x_controls),
  281. .dapm_widgets = ad183x_dapm_widgets,
  282. .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
  283. .dapm_routes = ad183x_dapm_routes,
  284. .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
  285. .idle_bias_on = 1,
  286. .use_pmdown_time = 1,
  287. .endianness = 1,
  288. .non_legacy_dai_naming = 1,
  289. };
  290. static const struct reg_default ad1836_reg_defaults[] = {
  291. { AD1836_DAC_CTRL1, 0x0000 },
  292. { AD1836_DAC_CTRL2, 0x0000 },
  293. { AD1836_DAC_L_VOL(0), 0x0000 },
  294. { AD1836_DAC_R_VOL(0), 0x0000 },
  295. { AD1836_DAC_L_VOL(1), 0x0000 },
  296. { AD1836_DAC_R_VOL(1), 0x0000 },
  297. { AD1836_DAC_L_VOL(2), 0x0000 },
  298. { AD1836_DAC_R_VOL(2), 0x0000 },
  299. { AD1836_DAC_L_VOL(3), 0x0000 },
  300. { AD1836_DAC_R_VOL(3), 0x0000 },
  301. { AD1836_ADC_CTRL1, 0x0000 },
  302. { AD1836_ADC_CTRL2, 0x0000 },
  303. { AD1836_ADC_CTRL3, 0x0000 },
  304. };
  305. static const struct regmap_config ad1836_regmap_config = {
  306. .val_bits = 12,
  307. .reg_bits = 4,
  308. .read_flag_mask = 0x08,
  309. .max_register = AD1836_ADC_CTRL3,
  310. .reg_defaults = ad1836_reg_defaults,
  311. .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
  312. .cache_type = REGCACHE_RBTREE,
  313. };
  314. static int ad1836_spi_probe(struct spi_device *spi)
  315. {
  316. struct ad1836_priv *ad1836;
  317. int ret;
  318. ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
  319. GFP_KERNEL);
  320. if (ad1836 == NULL)
  321. return -ENOMEM;
  322. ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
  323. if (IS_ERR(ad1836->regmap))
  324. return PTR_ERR(ad1836->regmap);
  325. ad1836->type = spi_get_device_id(spi)->driver_data;
  326. spi_set_drvdata(spi, ad1836);
  327. ret = devm_snd_soc_register_component(&spi->dev,
  328. &soc_component_dev_ad1836, &ad183x_dais[ad1836->type], 1);
  329. return ret;
  330. }
  331. static const struct spi_device_id ad1836_ids[] = {
  332. { "ad1835", AD1835 },
  333. { "ad1836", AD1836 },
  334. { "ad1837", AD1835 },
  335. { "ad1838", AD1838 },
  336. { "ad1839", AD1838 },
  337. { },
  338. };
  339. MODULE_DEVICE_TABLE(spi, ad1836_ids);
  340. static struct spi_driver ad1836_spi_driver = {
  341. .driver = {
  342. .name = "ad1836",
  343. },
  344. .probe = ad1836_spi_probe,
  345. .id_table = ad1836_ids,
  346. };
  347. module_spi_driver(ad1836_spi_driver);
  348. MODULE_DESCRIPTION("ASoC ad1836 driver");
  349. MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
  350. MODULE_LICENSE("GPL");