davinci-evm.c 14 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * ASoC driver for TI DAVINCI EVM platform
  4. *
  5. * Author: Vladimir Barinov, <[email protected]>
  6. * Copyright: (C) 2007 MontaVista Software, Inc., <[email protected]>
  7. */
  8. #include <linux/module.h>
  9. #include <linux/moduleparam.h>
  10. #include <linux/timer.h>
  11. #include <linux/interrupt.h>
  12. #include <linux/platform_device.h>
  13. #include <linux/i2c.h>
  14. #include <linux/of_platform.h>
  15. #include <linux/clk.h>
  16. #include <sound/core.h>
  17. #include <sound/pcm.h>
  18. #include <sound/soc.h>
  19. #include <asm/dma.h>
  20. #include <asm/mach-types.h>
  21. struct snd_soc_card_drvdata_davinci {
  22. struct clk *mclk;
  23. unsigned sysclk;
  24. };
  25. static int evm_startup(struct snd_pcm_substream *substream)
  26. {
  27. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  28. struct snd_soc_card *soc_card = rtd->card;
  29. struct snd_soc_card_drvdata_davinci *drvdata =
  30. snd_soc_card_get_drvdata(soc_card);
  31. if (drvdata->mclk)
  32. return clk_prepare_enable(drvdata->mclk);
  33. return 0;
  34. }
  35. static void evm_shutdown(struct snd_pcm_substream *substream)
  36. {
  37. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  38. struct snd_soc_card *soc_card = rtd->card;
  39. struct snd_soc_card_drvdata_davinci *drvdata =
  40. snd_soc_card_get_drvdata(soc_card);
  41. clk_disable_unprepare(drvdata->mclk);
  42. }
  43. static int evm_hw_params(struct snd_pcm_substream *substream,
  44. struct snd_pcm_hw_params *params)
  45. {
  46. struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  47. struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  48. struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
  49. struct snd_soc_card *soc_card = rtd->card;
  50. int ret = 0;
  51. unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
  52. snd_soc_card_get_drvdata(soc_card))->sysclk;
  53. /* set the codec system clock */
  54. ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  55. if (ret < 0)
  56. return ret;
  57. /* set the CPU system clock */
  58. ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  59. if (ret < 0 && ret != -ENOTSUPP)
  60. return ret;
  61. return 0;
  62. }
  63. static const struct snd_soc_ops evm_ops = {
  64. .startup = evm_startup,
  65. .shutdown = evm_shutdown,
  66. .hw_params = evm_hw_params,
  67. };
  68. /* davinci-evm machine dapm widgets */
  69. static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  70. SND_SOC_DAPM_HP("Headphone Jack", NULL),
  71. SND_SOC_DAPM_LINE("Line Out", NULL),
  72. SND_SOC_DAPM_MIC("Mic Jack", NULL),
  73. SND_SOC_DAPM_LINE("Line In", NULL),
  74. };
  75. /* davinci-evm machine audio_mapnections to the codec pins */
  76. static const struct snd_soc_dapm_route audio_map[] = {
  77. /* Headphone connected to HPLOUT, HPROUT */
  78. {"Headphone Jack", NULL, "HPLOUT"},
  79. {"Headphone Jack", NULL, "HPROUT"},
  80. /* Line Out connected to LLOUT, RLOUT */
  81. {"Line Out", NULL, "LLOUT"},
  82. {"Line Out", NULL, "RLOUT"},
  83. /* Mic connected to (MIC3L | MIC3R) */
  84. {"MIC3L", NULL, "Mic Bias"},
  85. {"MIC3R", NULL, "Mic Bias"},
  86. {"Mic Bias", NULL, "Mic Jack"},
  87. /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
  88. {"LINE1L", NULL, "Line In"},
  89. {"LINE2L", NULL, "Line In"},
  90. {"LINE1R", NULL, "Line In"},
  91. {"LINE2R", NULL, "Line In"},
  92. };
  93. /* Logic for a aic3x as connected on a davinci-evm */
  94. static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
  95. {
  96. struct snd_soc_card *card = rtd->card;
  97. struct device_node *np = card->dev->of_node;
  98. int ret;
  99. /* Add davinci-evm specific widgets */
  100. snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
  101. ARRAY_SIZE(aic3x_dapm_widgets));
  102. if (np) {
  103. ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
  104. if (ret)
  105. return ret;
  106. } else {
  107. /* Set up davinci-evm specific audio path audio_map */
  108. snd_soc_dapm_add_routes(&card->dapm, audio_map,
  109. ARRAY_SIZE(audio_map));
  110. }
  111. /* not connected */
  112. snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT");
  113. snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM");
  114. snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM");
  115. return 0;
  116. }
  117. /* davinci-evm digital audio interface glue - connects codec <--> CPU */
  118. SND_SOC_DAILINK_DEFS(dm6446,
  119. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
  120. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
  121. "tlv320aic3x-hifi")),
  122. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
  123. static struct snd_soc_dai_link dm6446_evm_dai = {
  124. .name = "TLV320AIC3X",
  125. .stream_name = "AIC3X",
  126. .init = evm_aic3x_init,
  127. .ops = &evm_ops,
  128. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  129. SND_SOC_DAIFMT_IB_NF,
  130. SND_SOC_DAILINK_REG(dm6446),
  131. };
  132. SND_SOC_DAILINK_DEFS(dm355,
  133. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp.1")),
  134. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
  135. "tlv320aic3x-hifi")),
  136. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp.1")));
  137. static struct snd_soc_dai_link dm355_evm_dai = {
  138. .name = "TLV320AIC3X",
  139. .stream_name = "AIC3X",
  140. .init = evm_aic3x_init,
  141. .ops = &evm_ops,
  142. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  143. SND_SOC_DAIFMT_IB_NF,
  144. SND_SOC_DAILINK_REG(dm355),
  145. };
  146. #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
  147. SND_SOC_DAILINK_DEFS(dm365,
  148. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
  149. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
  150. "tlv320aic3x-hifi")),
  151. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
  152. #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
  153. SND_SOC_DAILINK_DEFS(dm365,
  154. DAILINK_COMP_ARRAY(COMP_CPU("davinci-vcif")),
  155. DAILINK_COMP_ARRAY(COMP_CODEC("cq93vc-codec", "cq93vc-hifi")),
  156. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-vcif")));
  157. #endif
  158. static struct snd_soc_dai_link dm365_evm_dai = {
  159. #ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
  160. .name = "TLV320AIC3X",
  161. .stream_name = "AIC3X",
  162. .init = evm_aic3x_init,
  163. .ops = &evm_ops,
  164. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  165. SND_SOC_DAIFMT_IB_NF,
  166. SND_SOC_DAILINK_REG(dm365),
  167. #elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
  168. .name = "Voice Codec - CQ93VC",
  169. .stream_name = "CQ93",
  170. SND_SOC_DAILINK_REG(dm365),
  171. #endif
  172. };
  173. SND_SOC_DAILINK_DEFS(dm6467_aic3x,
  174. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
  175. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.0-001a",
  176. "tlv320aic3x-hifi")),
  177. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
  178. SND_SOC_DAILINK_DEFS(dm6467_spdif,
  179. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
  180. DAILINK_COMP_ARRAY(COMP_CODEC("spdif_dit", "dit-hifi")),
  181. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
  182. static struct snd_soc_dai_link dm6467_evm_dai[] = {
  183. {
  184. .name = "TLV320AIC3X",
  185. .stream_name = "AIC3X",
  186. .init = evm_aic3x_init,
  187. .ops = &evm_ops,
  188. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  189. SND_SOC_DAIFMT_IB_NF,
  190. SND_SOC_DAILINK_REG(dm6467_aic3x),
  191. },
  192. {
  193. .name = "McASP",
  194. .stream_name = "spdif",
  195. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  196. SND_SOC_DAIFMT_IB_NF,
  197. SND_SOC_DAILINK_REG(dm6467_spdif),
  198. },
  199. };
  200. SND_SOC_DAILINK_DEFS(da830,
  201. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
  202. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
  203. "tlv320aic3x-hifi")),
  204. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
  205. static struct snd_soc_dai_link da830_evm_dai = {
  206. .name = "TLV320AIC3X",
  207. .stream_name = "AIC3X",
  208. .init = evm_aic3x_init,
  209. .ops = &evm_ops,
  210. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  211. SND_SOC_DAIFMT_IB_NF,
  212. SND_SOC_DAILINK_REG(da830),
  213. };
  214. SND_SOC_DAILINK_DEFS(da850,
  215. DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
  216. DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
  217. "tlv320aic3x-hifi")),
  218. DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
  219. static struct snd_soc_dai_link da850_evm_dai = {
  220. .name = "TLV320AIC3X",
  221. .stream_name = "AIC3X",
  222. .init = evm_aic3x_init,
  223. .ops = &evm_ops,
  224. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  225. SND_SOC_DAIFMT_IB_NF,
  226. SND_SOC_DAILINK_REG(da850),
  227. };
  228. /* davinci dm6446 evm audio machine driver */
  229. /*
  230. * ASP0 in DM6446 EVM is clocked by U55, as configured by
  231. * board-dm644x-evm.c using GPIOs from U18. There are six
  232. * options; here we "know" we use a 48 KHz sample rate.
  233. */
  234. static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
  235. .sysclk = 12288000,
  236. };
  237. static struct snd_soc_card dm6446_snd_soc_card_evm = {
  238. .name = "DaVinci DM6446 EVM",
  239. .owner = THIS_MODULE,
  240. .dai_link = &dm6446_evm_dai,
  241. .num_links = 1,
  242. .drvdata = &dm6446_snd_soc_card_drvdata,
  243. };
  244. /* davinci dm355 evm audio machine driver */
  245. /* ASP1 on DM355 EVM is clocked by an external oscillator */
  246. static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
  247. .sysclk = 27000000,
  248. };
  249. static struct snd_soc_card dm355_snd_soc_card_evm = {
  250. .name = "DaVinci DM355 EVM",
  251. .owner = THIS_MODULE,
  252. .dai_link = &dm355_evm_dai,
  253. .num_links = 1,
  254. .drvdata = &dm355_snd_soc_card_drvdata,
  255. };
  256. /* davinci dm365 evm audio machine driver */
  257. static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
  258. .sysclk = 27000000,
  259. };
  260. static struct snd_soc_card dm365_snd_soc_card_evm = {
  261. .name = "DaVinci DM365 EVM",
  262. .owner = THIS_MODULE,
  263. .dai_link = &dm365_evm_dai,
  264. .num_links = 1,
  265. .drvdata = &dm365_snd_soc_card_drvdata,
  266. };
  267. /* davinci dm6467 evm audio machine driver */
  268. static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
  269. .sysclk = 27000000,
  270. };
  271. static struct snd_soc_card dm6467_snd_soc_card_evm = {
  272. .name = "DaVinci DM6467 EVM",
  273. .owner = THIS_MODULE,
  274. .dai_link = dm6467_evm_dai,
  275. .num_links = ARRAY_SIZE(dm6467_evm_dai),
  276. .drvdata = &dm6467_snd_soc_card_drvdata,
  277. };
  278. static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
  279. .sysclk = 24576000,
  280. };
  281. static struct snd_soc_card da830_snd_soc_card = {
  282. .name = "DA830/OMAP-L137 EVM",
  283. .owner = THIS_MODULE,
  284. .dai_link = &da830_evm_dai,
  285. .num_links = 1,
  286. .drvdata = &da830_snd_soc_card_drvdata,
  287. };
  288. static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
  289. .sysclk = 24576000,
  290. };
  291. static struct snd_soc_card da850_snd_soc_card = {
  292. .name = "DA850/OMAP-L138 EVM",
  293. .owner = THIS_MODULE,
  294. .dai_link = &da850_evm_dai,
  295. .num_links = 1,
  296. .drvdata = &da850_snd_soc_card_drvdata,
  297. };
  298. #if defined(CONFIG_OF)
  299. /*
  300. * The struct is used as place holder. It will be completely
  301. * filled with data from dt node.
  302. */
  303. SND_SOC_DAILINK_DEFS(evm,
  304. DAILINK_COMP_ARRAY(COMP_EMPTY()),
  305. DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")),
  306. DAILINK_COMP_ARRAY(COMP_EMPTY()));
  307. static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
  308. .name = "TLV320AIC3X",
  309. .stream_name = "AIC3X",
  310. .ops = &evm_ops,
  311. .init = evm_aic3x_init,
  312. .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
  313. SND_SOC_DAIFMT_IB_NF,
  314. SND_SOC_DAILINK_REG(evm),
  315. };
  316. static const struct of_device_id davinci_evm_dt_ids[] = {
  317. {
  318. .compatible = "ti,da830-evm-audio",
  319. .data = (void *) &evm_dai_tlv320aic3x,
  320. },
  321. { /* sentinel */ }
  322. };
  323. MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
  324. /* davinci evm audio machine driver */
  325. static struct snd_soc_card evm_soc_card = {
  326. .owner = THIS_MODULE,
  327. .num_links = 1,
  328. };
  329. static int davinci_evm_probe(struct platform_device *pdev)
  330. {
  331. struct device_node *np = pdev->dev.of_node;
  332. const struct of_device_id *match;
  333. struct snd_soc_dai_link *dai;
  334. struct snd_soc_card_drvdata_davinci *drvdata = NULL;
  335. struct clk *mclk;
  336. int ret = 0;
  337. match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
  338. if (!match) {
  339. dev_err(&pdev->dev, "Error: No device match found\n");
  340. return -ENODEV;
  341. }
  342. dai = (struct snd_soc_dai_link *) match->data;
  343. evm_soc_card.dai_link = dai;
  344. dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0);
  345. if (!dai->codecs->of_node)
  346. return -EINVAL;
  347. dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
  348. if (!dai->cpus->of_node)
  349. return -EINVAL;
  350. dai->platforms->of_node = dai->cpus->of_node;
  351. evm_soc_card.dev = &pdev->dev;
  352. ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
  353. if (ret)
  354. return ret;
  355. mclk = devm_clk_get(&pdev->dev, "mclk");
  356. if (PTR_ERR(mclk) == -EPROBE_DEFER) {
  357. return -EPROBE_DEFER;
  358. } else if (IS_ERR(mclk)) {
  359. dev_dbg(&pdev->dev, "mclk not found.\n");
  360. mclk = NULL;
  361. }
  362. drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
  363. if (!drvdata)
  364. return -ENOMEM;
  365. drvdata->mclk = mclk;
  366. ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
  367. if (ret < 0) {
  368. if (!drvdata->mclk) {
  369. dev_err(&pdev->dev,
  370. "No clock or clock rate defined.\n");
  371. return -EINVAL;
  372. }
  373. drvdata->sysclk = clk_get_rate(drvdata->mclk);
  374. } else if (drvdata->mclk) {
  375. unsigned int requestd_rate = drvdata->sysclk;
  376. clk_set_rate(drvdata->mclk, drvdata->sysclk);
  377. drvdata->sysclk = clk_get_rate(drvdata->mclk);
  378. if (drvdata->sysclk != requestd_rate)
  379. dev_warn(&pdev->dev,
  380. "Could not get requested rate %u using %u.\n",
  381. requestd_rate, drvdata->sysclk);
  382. }
  383. snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
  384. ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
  385. if (ret)
  386. dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
  387. return ret;
  388. }
  389. static struct platform_driver davinci_evm_driver = {
  390. .probe = davinci_evm_probe,
  391. .driver = {
  392. .name = "davinci_evm",
  393. .pm = &snd_soc_pm_ops,
  394. .of_match_table = of_match_ptr(davinci_evm_dt_ids),
  395. },
  396. };
  397. #endif
  398. static struct platform_device *evm_snd_device;
  399. static int __init evm_init(void)
  400. {
  401. struct snd_soc_card *evm_snd_dev_data;
  402. int index;
  403. int ret;
  404. /*
  405. * If dtb is there, the devices will be created dynamically.
  406. * Only register platfrom driver structure.
  407. */
  408. #if defined(CONFIG_OF)
  409. if (of_have_populated_dt())
  410. return platform_driver_register(&davinci_evm_driver);
  411. #endif
  412. if (machine_is_davinci_evm()) {
  413. evm_snd_dev_data = &dm6446_snd_soc_card_evm;
  414. index = 0;
  415. } else if (machine_is_davinci_dm355_evm()) {
  416. evm_snd_dev_data = &dm355_snd_soc_card_evm;
  417. index = 1;
  418. } else if (machine_is_davinci_dm365_evm()) {
  419. evm_snd_dev_data = &dm365_snd_soc_card_evm;
  420. index = 0;
  421. } else if (machine_is_davinci_dm6467_evm()) {
  422. evm_snd_dev_data = &dm6467_snd_soc_card_evm;
  423. index = 0;
  424. } else if (machine_is_davinci_da830_evm()) {
  425. evm_snd_dev_data = &da830_snd_soc_card;
  426. index = 1;
  427. } else if (machine_is_davinci_da850_evm()) {
  428. evm_snd_dev_data = &da850_snd_soc_card;
  429. index = 0;
  430. } else
  431. return -EINVAL;
  432. evm_snd_device = platform_device_alloc("soc-audio", index);
  433. if (!evm_snd_device)
  434. return -ENOMEM;
  435. platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
  436. ret = platform_device_add(evm_snd_device);
  437. if (ret)
  438. platform_device_put(evm_snd_device);
  439. return ret;
  440. }
  441. static void __exit evm_exit(void)
  442. {
  443. #if defined(CONFIG_OF)
  444. if (of_have_populated_dt()) {
  445. platform_driver_unregister(&davinci_evm_driver);
  446. return;
  447. }
  448. #endif
  449. platform_device_unregister(evm_snd_device);
  450. }
  451. module_init(evm_init);
  452. module_exit(evm_exit);
  453. MODULE_AUTHOR("Vladimir Barinov");
  454. MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
  455. MODULE_LICENSE("GPL");