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