rk3288_hdmi_analog.c 6.8 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Rockchip machine ASoC driver for RK3288 boards that have an HDMI and analog
  4. * audio output
  5. *
  6. * Copyright (c) 2016, Collabora Ltd.
  7. *
  8. * Authors: Sjoerd Simons <sjoerd.simons@collabora.com>,
  9. * Romain Perier <romain.perier@collabora.com>
  10. */
  11. #include <linux/module.h>
  12. #include <linux/platform_device.h>
  13. #include <linux/slab.h>
  14. #include <linux/gpio.h>
  15. #include <linux/of_gpio.h>
  16. #include <sound/core.h>
  17. #include <sound/jack.h>
  18. #include <sound/pcm.h>
  19. #include <sound/pcm_params.h>
  20. #include <sound/soc.h>
  21. #include <sound/soc-dapm.h>
  22. #include "rockchip_i2s.h"
  23. #define DRV_NAME "rk3288-snd-hdmi-analog"
  24. struct rk_drvdata {
  25. int gpio_hp_en;
  26. int gpio_hp_det;
  27. };
  28. static int rk_hp_power(struct snd_soc_dapm_widget *w,
  29. struct snd_kcontrol *k, int event)
  30. {
  31. struct rk_drvdata *machine = snd_soc_card_get_drvdata(w->dapm->card);
  32. if (!gpio_is_valid(machine->gpio_hp_en))
  33. return 0;
  34. gpio_set_value_cansleep(machine->gpio_hp_en,
  35. SND_SOC_DAPM_EVENT_ON(event));
  36. return 0;
  37. }
  38. static struct snd_soc_jack headphone_jack;
  39. static struct snd_soc_jack_pin headphone_jack_pins[] = {
  40. {
  41. .pin = "Analog",
  42. .mask = SND_JACK_HEADPHONE
  43. },
  44. };
  45. static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {
  46. SND_SOC_DAPM_HP("Analog", rk_hp_power),
  47. SND_SOC_DAPM_LINE("HDMI", NULL),
  48. };
  49. static const struct snd_kcontrol_new rk_mc_controls[] = {
  50. SOC_DAPM_PIN_SWITCH("Analog"),
  51. SOC_DAPM_PIN_SWITCH("HDMI"),
  52. };
  53. static int rk_hw_params(struct snd_pcm_substream *substream,
  54. struct snd_pcm_hw_params *params)
  55. {
  56. int ret = 0;
  57. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  58. struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  59. struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  60. int mclk;
  61. switch (params_rate(params)) {
  62. case 8000:
  63. case 16000:
  64. case 24000:
  65. case 32000:
  66. case 48000:
  67. case 64000:
  68. case 96000:
  69. mclk = 12288000;
  70. break;
  71. case 192000:
  72. mclk = 24576000;
  73. break;
  74. case 11025:
  75. case 22050:
  76. case 44100:
  77. case 88200:
  78. mclk = 11289600;
  79. break;
  80. default:
  81. return -EINVAL;
  82. }
  83. ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
  84. SND_SOC_CLOCK_OUT);
  85. if (ret && ret != -ENOTSUPP) {
  86. dev_err(codec_dai->dev, "Can't set cpu clock %d\n", ret);
  87. return ret;
  88. }
  89. ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  90. SND_SOC_CLOCK_IN);
  91. if (ret && ret != -ENOTSUPP) {
  92. dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);
  93. return ret;
  94. }
  95. return 0;
  96. }
  97. static struct snd_soc_jack_gpio rk_hp_jack_gpio = {
  98. .name = "Headphone detection",
  99. .report = SND_JACK_HEADPHONE,
  100. .debounce_time = 150
  101. };
  102. static int rk_init(struct snd_soc_pcm_runtime *runtime)
  103. {
  104. struct rk_drvdata *machine = snd_soc_card_get_drvdata(runtime->card);
  105. /* Enable Headset Jack detection */
  106. if (gpio_is_valid(machine->gpio_hp_det)) {
  107. snd_soc_card_jack_new(runtime->card, "Headphone Jack",
  108. SND_JACK_HEADPHONE, &headphone_jack,
  109. headphone_jack_pins,
  110. ARRAY_SIZE(headphone_jack_pins));
  111. rk_hp_jack_gpio.gpio = machine->gpio_hp_det;
  112. snd_soc_jack_add_gpios(&headphone_jack, 1, &rk_hp_jack_gpio);
  113. }
  114. return 0;
  115. }
  116. static const struct snd_soc_ops rk_ops = {
  117. .hw_params = rk_hw_params,
  118. };
  119. SND_SOC_DAILINK_DEFS(audio,
  120. DAILINK_COMP_ARRAY(COMP_EMPTY()),
  121. DAILINK_COMP_ARRAY(COMP_CODEC(NULL, NULL),
  122. COMP_CODEC("hdmi-audio-codec.2.auto", "i2s-hifi")),
  123. DAILINK_COMP_ARRAY(COMP_EMPTY()));
  124. static struct snd_soc_dai_link rk_dailink = {
  125. .name = "Codecs",
  126. .stream_name = "Audio",
  127. .init = rk_init,
  128. .ops = &rk_ops,
  129. /* Set codecs as slave */
  130. .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  131. SND_SOC_DAIFMT_CBS_CFS,
  132. SND_SOC_DAILINK_REG(audio),
  133. };
  134. static struct snd_soc_card snd_soc_card_rk = {
  135. .name = "ROCKCHIP-I2S",
  136. .dai_link = &rk_dailink,
  137. .num_links = 1,
  138. .num_aux_devs = 0,
  139. .dapm_widgets = rk_dapm_widgets,
  140. .num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),
  141. .controls = rk_mc_controls,
  142. .num_controls = ARRAY_SIZE(rk_mc_controls),
  143. };
  144. static int snd_rk_mc_probe(struct platform_device *pdev)
  145. {
  146. int ret = 0;
  147. struct snd_soc_card *card = &snd_soc_card_rk;
  148. struct device_node *np = pdev->dev.of_node;
  149. struct rk_drvdata *machine;
  150. struct of_phandle_args args;
  151. machine = devm_kzalloc(&pdev->dev, sizeof(struct rk_drvdata),
  152. GFP_KERNEL);
  153. if (!machine)
  154. return -ENOMEM;
  155. card->dev = &pdev->dev;
  156. machine->gpio_hp_det = of_get_named_gpio(np,
  157. "rockchip,hp-det-gpios", 0);
  158. if (!gpio_is_valid(machine->gpio_hp_det) && machine->gpio_hp_det != -ENODEV)
  159. return machine->gpio_hp_det;
  160. machine->gpio_hp_en = of_get_named_gpio(np,
  161. "rockchip,hp-en-gpios", 0);
  162. if (!gpio_is_valid(machine->gpio_hp_en) && machine->gpio_hp_en != -ENODEV)
  163. return machine->gpio_hp_en;
  164. if (gpio_is_valid(machine->gpio_hp_en)) {
  165. ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
  166. GPIOF_OUT_INIT_LOW, "hp_en");
  167. if (ret) {
  168. dev_err(card->dev, "cannot get hp_en gpio\n");
  169. return ret;
  170. }
  171. }
  172. ret = snd_soc_of_parse_card_name(card, "rockchip,model");
  173. if (ret) {
  174. dev_err(card->dev, "SoC parse card name failed %d\n", ret);
  175. return ret;
  176. }
  177. rk_dailink.codecs[0].of_node = of_parse_phandle(np,
  178. "rockchip,audio-codec",
  179. 0);
  180. if (!rk_dailink.codecs[0].of_node) {
  181. dev_err(&pdev->dev,
  182. "Property 'rockchip,audio-codec' missing or invalid\n");
  183. return -EINVAL;
  184. }
  185. ret = of_parse_phandle_with_fixed_args(np, "rockchip,audio-codec",
  186. 0, 0, &args);
  187. if (ret) {
  188. dev_err(&pdev->dev,
  189. "Unable to parse property 'rockchip,audio-codec'\n");
  190. return ret;
  191. }
  192. ret = snd_soc_get_dai_name(&args, &rk_dailink.codecs[0].dai_name);
  193. if (ret) {
  194. dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
  195. return ret;
  196. }
  197. rk_dailink.cpus->of_node = of_parse_phandle(np, "rockchip,i2s-controller",
  198. 0);
  199. if (!rk_dailink.cpus->of_node) {
  200. dev_err(&pdev->dev,
  201. "Property 'rockchip,i2s-controller' missing or invalid\n");
  202. return -EINVAL;
  203. }
  204. rk_dailink.platforms->of_node = rk_dailink.cpus->of_node;
  205. ret = snd_soc_of_parse_audio_routing(card, "rockchip,routing");
  206. if (ret) {
  207. dev_err(&pdev->dev,
  208. "Unable to parse 'rockchip,routing' property\n");
  209. return ret;
  210. }
  211. snd_soc_card_set_drvdata(card, machine);
  212. ret = devm_snd_soc_register_card(&pdev->dev, card);
  213. if (ret == -EPROBE_DEFER)
  214. return -EPROBE_DEFER;
  215. if (ret) {
  216. dev_err(&pdev->dev,
  217. "Soc register card failed %d\n", ret);
  218. return ret;
  219. }
  220. return ret;
  221. }
  222. static const struct of_device_id rockchip_sound_of_match[] = {
  223. { .compatible = "rockchip,rk3288-hdmi-analog", },
  224. {},
  225. };
  226. MODULE_DEVICE_TABLE(of, rockchip_sound_of_match);
  227. static struct platform_driver rockchip_sound_driver = {
  228. .probe = snd_rk_mc_probe,
  229. .driver = {
  230. .name = DRV_NAME,
  231. .pm = &snd_soc_pm_ops,
  232. .of_match_table = rockchip_sound_of_match,
  233. },
  234. };
  235. module_platform_driver(rockchip_sound_driver);
  236. MODULE_AUTHOR("Sjoerd Simons <sjoerd.simons@collabora.com>");
  237. MODULE_DESCRIPTION("Rockchip RK3288 machine ASoC driver");
  238. MODULE_LICENSE("GPL v2");
  239. MODULE_ALIAS("platform:" DRV_NAME);