tfa9879.c 8.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. //
  3. // tfa9879.c -- driver for NXP Semiconductors TFA9879
  4. //
  5. // Copyright (C) 2014 Axentia Technologies AB
  6. // Author: Peter Rosin <peda@axentia.se>
  7. #include <linux/module.h>
  8. #include <linux/init.h>
  9. #include <linux/i2c.h>
  10. #include <linux/regmap.h>
  11. #include <sound/soc.h>
  12. #include <sound/tlv.h>
  13. #include <sound/pcm_params.h>
  14. #include "tfa9879.h"
  15. struct tfa9879_priv {
  16. struct regmap *regmap;
  17. int lsb_justified;
  18. };
  19. static int tfa9879_hw_params(struct snd_pcm_substream *substream,
  20. struct snd_pcm_hw_params *params,
  21. struct snd_soc_dai *dai)
  22. {
  23. struct snd_soc_component *component = dai->component;
  24. struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
  25. int fs;
  26. int i2s_set = 0;
  27. switch (params_rate(params)) {
  28. case 8000:
  29. fs = TFA9879_I2S_FS_8000;
  30. break;
  31. case 11025:
  32. fs = TFA9879_I2S_FS_11025;
  33. break;
  34. case 12000:
  35. fs = TFA9879_I2S_FS_12000;
  36. break;
  37. case 16000:
  38. fs = TFA9879_I2S_FS_16000;
  39. break;
  40. case 22050:
  41. fs = TFA9879_I2S_FS_22050;
  42. break;
  43. case 24000:
  44. fs = TFA9879_I2S_FS_24000;
  45. break;
  46. case 32000:
  47. fs = TFA9879_I2S_FS_32000;
  48. break;
  49. case 44100:
  50. fs = TFA9879_I2S_FS_44100;
  51. break;
  52. case 48000:
  53. fs = TFA9879_I2S_FS_48000;
  54. break;
  55. case 64000:
  56. fs = TFA9879_I2S_FS_64000;
  57. break;
  58. case 88200:
  59. fs = TFA9879_I2S_FS_88200;
  60. break;
  61. case 96000:
  62. fs = TFA9879_I2S_FS_96000;
  63. break;
  64. default:
  65. return -EINVAL;
  66. }
  67. switch (params_width(params)) {
  68. case 16:
  69. i2s_set = TFA9879_I2S_SET_LSB_J_16;
  70. break;
  71. case 24:
  72. i2s_set = TFA9879_I2S_SET_LSB_J_24;
  73. break;
  74. default:
  75. return -EINVAL;
  76. }
  77. if (tfa9879->lsb_justified)
  78. snd_soc_component_update_bits(component,
  79. TFA9879_SERIAL_INTERFACE_1,
  80. TFA9879_I2S_SET_MASK,
  81. i2s_set << TFA9879_I2S_SET_SHIFT);
  82. snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
  83. TFA9879_I2S_FS_MASK,
  84. fs << TFA9879_I2S_FS_SHIFT);
  85. return 0;
  86. }
  87. static int tfa9879_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
  88. {
  89. struct snd_soc_component *component = dai->component;
  90. snd_soc_component_update_bits(component, TFA9879_MISC_CONTROL,
  91. TFA9879_S_MUTE_MASK,
  92. !!mute << TFA9879_S_MUTE_SHIFT);
  93. return 0;
  94. }
  95. static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
  96. {
  97. struct snd_soc_component *component = dai->component;
  98. struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
  99. int i2s_set;
  100. int sck_pol;
  101. switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
  102. case SND_SOC_DAIFMT_CBS_CFS:
  103. break;
  104. default:
  105. return -EINVAL;
  106. }
  107. switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
  108. case SND_SOC_DAIFMT_NB_NF:
  109. sck_pol = TFA9879_SCK_POL_NORMAL;
  110. break;
  111. case SND_SOC_DAIFMT_IB_NF:
  112. sck_pol = TFA9879_SCK_POL_INVERSE;
  113. break;
  114. default:
  115. return -EINVAL;
  116. }
  117. switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
  118. case SND_SOC_DAIFMT_I2S:
  119. tfa9879->lsb_justified = 0;
  120. i2s_set = TFA9879_I2S_SET_I2S_24;
  121. break;
  122. case SND_SOC_DAIFMT_LEFT_J:
  123. tfa9879->lsb_justified = 0;
  124. i2s_set = TFA9879_I2S_SET_MSB_J_24;
  125. break;
  126. case SND_SOC_DAIFMT_RIGHT_J:
  127. tfa9879->lsb_justified = 1;
  128. i2s_set = TFA9879_I2S_SET_LSB_J_24;
  129. break;
  130. default:
  131. return -EINVAL;
  132. }
  133. snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
  134. TFA9879_SCK_POL_MASK,
  135. sck_pol << TFA9879_SCK_POL_SHIFT);
  136. snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
  137. TFA9879_I2S_SET_MASK,
  138. i2s_set << TFA9879_I2S_SET_SHIFT);
  139. return 0;
  140. }
  141. static const struct reg_default tfa9879_regs[] = {
  142. { TFA9879_DEVICE_CONTROL, 0x0000 }, /* 0x00 */
  143. { TFA9879_SERIAL_INTERFACE_1, 0x0a18 }, /* 0x01 */
  144. { TFA9879_PCM_IOM2_FORMAT_1, 0x0007 }, /* 0x02 */
  145. { TFA9879_SERIAL_INTERFACE_2, 0x0a18 }, /* 0x03 */
  146. { TFA9879_PCM_IOM2_FORMAT_2, 0x0007 }, /* 0x04 */
  147. { TFA9879_EQUALIZER_A1, 0x59dd }, /* 0x05 */
  148. { TFA9879_EQUALIZER_A2, 0xc63e }, /* 0x06 */
  149. { TFA9879_EQUALIZER_B1, 0x651a }, /* 0x07 */
  150. { TFA9879_EQUALIZER_B2, 0xe53e }, /* 0x08 */
  151. { TFA9879_EQUALIZER_C1, 0x4616 }, /* 0x09 */
  152. { TFA9879_EQUALIZER_C2, 0xd33e }, /* 0x0a */
  153. { TFA9879_EQUALIZER_D1, 0x4df3 }, /* 0x0b */
  154. { TFA9879_EQUALIZER_D2, 0xea3e }, /* 0x0c */
  155. { TFA9879_EQUALIZER_E1, 0x5ee0 }, /* 0x0d */
  156. { TFA9879_EQUALIZER_E2, 0xf93e }, /* 0x0e */
  157. { TFA9879_BYPASS_CONTROL, 0x0093 }, /* 0x0f */
  158. { TFA9879_DYNAMIC_RANGE_COMPR, 0x92ba }, /* 0x10 */
  159. { TFA9879_BASS_TREBLE, 0x12a5 }, /* 0x11 */
  160. { TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
  161. { TFA9879_VOLUME_CONTROL, 0x10bd }, /* 0x13 */
  162. { TFA9879_MISC_CONTROL, 0x0000 }, /* 0x14 */
  163. };
  164. static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
  165. {
  166. return reg == TFA9879_MISC_STATUS;
  167. }
  168. static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
  169. static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
  170. static const char * const tb_freq_text[] = {
  171. "Low", "Mid", "High"
  172. };
  173. static const struct soc_enum treble_freq_enum =
  174. SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
  175. ARRAY_SIZE(tb_freq_text), tb_freq_text);
  176. static const struct soc_enum bass_freq_enum =
  177. SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
  178. ARRAY_SIZE(tb_freq_text), tb_freq_text);
  179. static const struct snd_kcontrol_new tfa9879_controls[] = {
  180. SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
  181. TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
  182. SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
  183. TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
  184. SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
  185. TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
  186. SOC_ENUM("Treble Corner Freq", treble_freq_enum),
  187. SOC_ENUM("Bass Corner Freq", bass_freq_enum),
  188. };
  189. static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
  190. SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
  191. SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
  192. SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
  193. SND_SOC_DAPM_OUTPUT("LINEOUT"),
  194. SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
  195. NULL, 0),
  196. };
  197. static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
  198. { "DAC", NULL, "AIFINL" },
  199. { "DAC", NULL, "AIFINR" },
  200. { "LINEOUT", NULL, "DAC" },
  201. { "DAC", NULL, "POWER" },
  202. };
  203. static const struct snd_soc_component_driver tfa9879_component = {
  204. .controls = tfa9879_controls,
  205. .num_controls = ARRAY_SIZE(tfa9879_controls),
  206. .dapm_widgets = tfa9879_dapm_widgets,
  207. .num_dapm_widgets = ARRAY_SIZE(tfa9879_dapm_widgets),
  208. .dapm_routes = tfa9879_dapm_routes,
  209. .num_dapm_routes = ARRAY_SIZE(tfa9879_dapm_routes),
  210. .idle_bias_on = 1,
  211. .use_pmdown_time = 1,
  212. .endianness = 1,
  213. .non_legacy_dai_naming = 1,
  214. };
  215. static const struct regmap_config tfa9879_regmap = {
  216. .reg_bits = 8,
  217. .val_bits = 16,
  218. .volatile_reg = tfa9879_volatile_reg,
  219. .max_register = TFA9879_MISC_STATUS,
  220. .reg_defaults = tfa9879_regs,
  221. .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
  222. .cache_type = REGCACHE_RBTREE,
  223. };
  224. static const struct snd_soc_dai_ops tfa9879_dai_ops = {
  225. .hw_params = tfa9879_hw_params,
  226. .mute_stream = tfa9879_mute_stream,
  227. .set_fmt = tfa9879_set_fmt,
  228. .no_capture_mute = 1,
  229. };
  230. #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
  231. #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
  232. SNDRV_PCM_FMTBIT_S24_LE)
  233. static struct snd_soc_dai_driver tfa9879_dai = {
  234. .name = "tfa9879-hifi",
  235. .playback = {
  236. .stream_name = "Playback",
  237. .channels_min = 2,
  238. .channels_max = 2,
  239. .rates = TFA9879_RATES,
  240. .formats = TFA9879_FORMATS, },
  241. .ops = &tfa9879_dai_ops,
  242. };
  243. static int tfa9879_i2c_probe(struct i2c_client *i2c)
  244. {
  245. struct tfa9879_priv *tfa9879;
  246. int i;
  247. tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
  248. if (!tfa9879)
  249. return -ENOMEM;
  250. i2c_set_clientdata(i2c, tfa9879);
  251. tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
  252. if (IS_ERR(tfa9879->regmap))
  253. return PTR_ERR(tfa9879->regmap);
  254. /* Ensure the device is in reset state */
  255. for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
  256. regmap_write(tfa9879->regmap,
  257. tfa9879_regs[i].reg, tfa9879_regs[i].def);
  258. return devm_snd_soc_register_component(&i2c->dev, &tfa9879_component,
  259. &tfa9879_dai, 1);
  260. }
  261. static const struct i2c_device_id tfa9879_i2c_id[] = {
  262. { "tfa9879", 0 },
  263. { }
  264. };
  265. MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
  266. static const struct of_device_id tfa9879_of_match[] = {
  267. { .compatible = "nxp,tfa9879", },
  268. { }
  269. };
  270. MODULE_DEVICE_TABLE(of, tfa9879_of_match);
  271. static struct i2c_driver tfa9879_i2c_driver = {
  272. .driver = {
  273. .name = "tfa9879",
  274. .of_match_table = tfa9879_of_match,
  275. },
  276. .probe_new = tfa9879_i2c_probe,
  277. .id_table = tfa9879_i2c_id,
  278. };
  279. module_i2c_driver(tfa9879_i2c_driver);
  280. MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
  281. MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
  282. MODULE_LICENSE("GPL");