wm1133-ev1.c 8.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. //
  3. // wm1133-ev1.c - Audio for WM1133-EV1 on i.MX31ADS
  4. //
  5. // Copyright (c) 2010 Wolfson Microelectronics plc
  6. // Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  7. //
  8. // Based on an earlier driver for the same hardware by Liam Girdwood.
  9. #include <linux/platform_device.h>
  10. #include <linux/clk.h>
  11. #include <linux/module.h>
  12. #include <sound/core.h>
  13. #include <sound/jack.h>
  14. #include <sound/pcm.h>
  15. #include <sound/pcm_params.h>
  16. #include <sound/soc.h>
  17. #include "imx-ssi.h"
  18. #include "../codecs/wm8350.h"
  19. #include "imx-audmux.h"
  20. /* There is a silicon mic on the board optionally connected via a solder pad
  21. * SP1. Define this to enable it.
  22. */
  23. #undef USE_SIMIC
  24. struct _wm8350_audio {
  25. unsigned int channels;
  26. snd_pcm_format_t format;
  27. unsigned int rate;
  28. unsigned int sysclk;
  29. unsigned int bclkdiv;
  30. unsigned int clkdiv;
  31. unsigned int lr_rate;
  32. };
  33. /* in order of power consumption per rate (lowest first) */
  34. static const struct _wm8350_audio wm8350_audio[] = {
  35. /* 16bit mono modes */
  36. {1, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000 >> 1,
  37. WM8350_BCLK_DIV_48, WM8350_DACDIV_3, 16,},
  38. /* 16 bit stereo modes */
  39. {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 12288000,
  40. WM8350_BCLK_DIV_48, WM8350_DACDIV_6, 32,},
  41. {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 12288000,
  42. WM8350_BCLK_DIV_24, WM8350_DACDIV_3, 32,},
  43. {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 12288000,
  44. WM8350_BCLK_DIV_12, WM8350_DACDIV_1_5, 32,},
  45. {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 12288000,
  46. WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  47. {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 24576000,
  48. WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  49. {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 11289600,
  50. WM8350_BCLK_DIV_32, WM8350_DACDIV_4, 32,},
  51. {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 11289600,
  52. WM8350_BCLK_DIV_16, WM8350_DACDIV_2, 32,},
  53. {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 11289600,
  54. WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  55. {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 22579200,
  56. WM8350_BCLK_DIV_8, WM8350_DACDIV_1, 32,},
  57. /* 24bit stereo modes */
  58. {2, SNDRV_PCM_FORMAT_S24_LE, 48000, 12288000,
  59. WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  60. {2, SNDRV_PCM_FORMAT_S24_LE, 96000, 24576000,
  61. WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  62. {2, SNDRV_PCM_FORMAT_S24_LE, 44100, 11289600,
  63. WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  64. {2, SNDRV_PCM_FORMAT_S24_LE, 88200, 22579200,
  65. WM8350_BCLK_DIV_4, WM8350_DACDIV_1, 64,},
  66. };
  67. static int wm1133_ev1_hw_params(struct snd_pcm_substream *substream,
  68. struct snd_pcm_hw_params *params)
  69. {
  70. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  71. struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  72. struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  73. int i, found = 0;
  74. snd_pcm_format_t format = params_format(params);
  75. unsigned int rate = params_rate(params);
  76. unsigned int channels = params_channels(params);
  77. /* find the correct audio parameters */
  78. for (i = 0; i < ARRAY_SIZE(wm8350_audio); i++) {
  79. if (rate == wm8350_audio[i].rate &&
  80. format == wm8350_audio[i].format &&
  81. channels == wm8350_audio[i].channels) {
  82. found = 1;
  83. break;
  84. }
  85. }
  86. if (!found)
  87. return -EINVAL;
  88. /* codec FLL input is 14.75 MHz from MCLK */
  89. snd_soc_dai_set_pll(codec_dai, 0, 0, 14750000, wm8350_audio[i].sysclk);
  90. /* TODO: The SSI driver should figure this out for us */
  91. switch (channels) {
  92. case 2:
  93. snd_soc_dai_set_tdm_slot(cpu_dai, 0x3, 0x3, 2, 0);
  94. break;
  95. case 1:
  96. snd_soc_dai_set_tdm_slot(cpu_dai, 0x1, 0x1, 1, 0);
  97. break;
  98. default:
  99. return -EINVAL;
  100. }
  101. /* set MCLK as the codec system clock for DAC and ADC */
  102. snd_soc_dai_set_sysclk(codec_dai, WM8350_MCLK_SEL_PLL_MCLK,
  103. wm8350_audio[i].sysclk, SND_SOC_CLOCK_IN);
  104. /* set codec BCLK division for sample rate */
  105. snd_soc_dai_set_clkdiv(codec_dai, WM8350_BCLK_CLKDIV,
  106. wm8350_audio[i].bclkdiv);
  107. /* DAI is synchronous and clocked with DAC LRCLK & ADC LRC */
  108. snd_soc_dai_set_clkdiv(codec_dai,
  109. WM8350_DACLR_CLKDIV, wm8350_audio[i].lr_rate);
  110. snd_soc_dai_set_clkdiv(codec_dai,
  111. WM8350_ADCLR_CLKDIV, wm8350_audio[i].lr_rate);
  112. /* now configure DAC and ADC clocks */
  113. snd_soc_dai_set_clkdiv(codec_dai,
  114. WM8350_DAC_CLKDIV, wm8350_audio[i].clkdiv);
  115. snd_soc_dai_set_clkdiv(codec_dai,
  116. WM8350_ADC_CLKDIV, wm8350_audio[i].clkdiv);
  117. return 0;
  118. }
  119. static const struct snd_soc_ops wm1133_ev1_ops = {
  120. .hw_params = wm1133_ev1_hw_params,
  121. };
  122. static const struct snd_soc_dapm_widget wm1133_ev1_widgets[] = {
  123. #ifdef USE_SIMIC
  124. SND_SOC_DAPM_MIC("SiMIC", NULL),
  125. #endif
  126. SND_SOC_DAPM_MIC("Mic1 Jack", NULL),
  127. SND_SOC_DAPM_MIC("Mic2 Jack", NULL),
  128. SND_SOC_DAPM_LINE("Line In Jack", NULL),
  129. SND_SOC_DAPM_LINE("Line Out Jack", NULL),
  130. SND_SOC_DAPM_HP("Headphone Jack", NULL),
  131. };
  132. /* imx32ads soc_card audio map */
  133. static const struct snd_soc_dapm_route wm1133_ev1_map[] = {
  134. #ifdef USE_SIMIC
  135. /* SiMIC --> IN1LN (with automatic bias) via SP1 */
  136. { "IN1LN", NULL, "Mic Bias" },
  137. { "Mic Bias", NULL, "SiMIC" },
  138. #endif
  139. /* Mic 1 Jack --> IN1LN and IN1LP (with automatic bias) */
  140. { "IN1LN", NULL, "Mic Bias" },
  141. { "IN1LP", NULL, "Mic1 Jack" },
  142. { "Mic Bias", NULL, "Mic1 Jack" },
  143. /* Mic 2 Jack --> IN1RN and IN1RP (with automatic bias) */
  144. { "IN1RN", NULL, "Mic Bias" },
  145. { "IN1RP", NULL, "Mic2 Jack" },
  146. { "Mic Bias", NULL, "Mic2 Jack" },
  147. /* Line in Jack --> AUX (L+R) */
  148. { "IN3R", NULL, "Line In Jack" },
  149. { "IN3L", NULL, "Line In Jack" },
  150. /* Out1 --> Headphone Jack */
  151. { "Headphone Jack", NULL, "OUT1R" },
  152. { "Headphone Jack", NULL, "OUT1L" },
  153. /* Out1 --> Line Out Jack */
  154. { "Line Out Jack", NULL, "OUT2R" },
  155. { "Line Out Jack", NULL, "OUT2L" },
  156. };
  157. static struct snd_soc_jack hp_jack;
  158. static struct snd_soc_jack_pin hp_jack_pins[] = {
  159. { .pin = "Headphone Jack", .mask = SND_JACK_HEADPHONE },
  160. };
  161. static struct snd_soc_jack mic_jack;
  162. static struct snd_soc_jack_pin mic_jack_pins[] = {
  163. { .pin = "Mic1 Jack", .mask = SND_JACK_MICROPHONE },
  164. { .pin = "Mic2 Jack", .mask = SND_JACK_MICROPHONE },
  165. };
  166. static int wm1133_ev1_init(struct snd_soc_pcm_runtime *rtd)
  167. {
  168. struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
  169. /* Headphone jack detection */
  170. snd_soc_card_jack_new(rtd->card, "Headphone", SND_JACK_HEADPHONE,
  171. &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
  172. wm8350_hp_jack_detect(component, WM8350_JDR, &hp_jack, SND_JACK_HEADPHONE);
  173. /* Microphone jack detection */
  174. snd_soc_card_jack_new(rtd->card, "Microphone",
  175. SND_JACK_MICROPHONE | SND_JACK_BTN_0, &mic_jack,
  176. mic_jack_pins, ARRAY_SIZE(mic_jack_pins));
  177. wm8350_mic_jack_detect(component, &mic_jack, SND_JACK_MICROPHONE,
  178. SND_JACK_BTN_0);
  179. snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "Mic Bias");
  180. return 0;
  181. }
  182. SND_SOC_DAILINK_DEFS(ev1,
  183. DAILINK_COMP_ARRAY(COMP_CPU("imx-ssi.0")),
  184. DAILINK_COMP_ARRAY(COMP_CODEC("wm8350-codec.0-0x1a", "wm8350-hifi")),
  185. DAILINK_COMP_ARRAY(COMP_PLATFORM("imx-ssi.0")));
  186. static struct snd_soc_dai_link wm1133_ev1_dai = {
  187. .name = "WM1133-EV1",
  188. .stream_name = "Audio",
  189. .init = wm1133_ev1_init,
  190. .ops = &wm1133_ev1_ops,
  191. .symmetric_rates = 1,
  192. .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  193. SND_SOC_DAIFMT_CBM_CFM,
  194. SND_SOC_DAILINK_REG(ev1),
  195. };
  196. static struct snd_soc_card wm1133_ev1 = {
  197. .name = "WM1133-EV1",
  198. .owner = THIS_MODULE,
  199. .dai_link = &wm1133_ev1_dai,
  200. .num_links = 1,
  201. .dapm_widgets = wm1133_ev1_widgets,
  202. .num_dapm_widgets = ARRAY_SIZE(wm1133_ev1_widgets),
  203. .dapm_routes = wm1133_ev1_map,
  204. .num_dapm_routes = ARRAY_SIZE(wm1133_ev1_map),
  205. };
  206. static struct platform_device *wm1133_ev1_snd_device;
  207. static int __init wm1133_ev1_audio_init(void)
  208. {
  209. int ret;
  210. unsigned int ptcr, pdcr;
  211. /* SSI0 mastered by port 5 */
  212. ptcr = IMX_AUDMUX_V2_PTCR_SYN |
  213. IMX_AUDMUX_V2_PTCR_TFSDIR |
  214. IMX_AUDMUX_V2_PTCR_TFSEL(MX31_AUDMUX_PORT5_SSI_PINS_5) |
  215. IMX_AUDMUX_V2_PTCR_TCLKDIR |
  216. IMX_AUDMUX_V2_PTCR_TCSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
  217. pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT5_SSI_PINS_5);
  218. imx_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
  219. ptcr = IMX_AUDMUX_V2_PTCR_SYN;
  220. pdcr = IMX_AUDMUX_V2_PDCR_RXDSEL(MX31_AUDMUX_PORT1_SSI0);
  221. imx_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
  222. wm1133_ev1_snd_device = platform_device_alloc("soc-audio", -1);
  223. if (!wm1133_ev1_snd_device)
  224. return -ENOMEM;
  225. platform_set_drvdata(wm1133_ev1_snd_device, &wm1133_ev1);
  226. ret = platform_device_add(wm1133_ev1_snd_device);
  227. if (ret)
  228. platform_device_put(wm1133_ev1_snd_device);
  229. return ret;
  230. }
  231. module_init(wm1133_ev1_audio_init);
  232. static void __exit wm1133_ev1_audio_exit(void)
  233. {
  234. platform_device_unregister(wm1133_ev1_snd_device);
  235. }
  236. module_exit(wm1133_ev1_audio_exit);
  237. MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
  238. MODULE_DESCRIPTION("Audio for WM1133-EV1 on i.MX31ADS");
  239. MODULE_LICENSE("GPL");