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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
9#include <linux/module.h>
10#include <linux/moduleparam.h>
11#include <linux/timer.h>
12#include <linux/interrupt.h>
13#include <linux/platform_device.h>
14#include <linux/i2c.h>
15#include <linux/of_platform.h>
16#include <linux/clk.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/soc.h>
20
21#include <asm/dma.h>
22#include <asm/mach-types.h>
23
24struct snd_soc_card_drvdata_davinci {
25 struct clk *mclk;
26 unsigned sysclk;
27};
28
29static int evm_startup(struct snd_pcm_substream *substream)
30{
31 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
32 struct snd_soc_card *soc_card = rtd->card;
33 struct snd_soc_card_drvdata_davinci *drvdata =
34 snd_soc_card_get_drvdata(soc_card);
35
36 if (drvdata->mclk)
37 return clk_prepare_enable(drvdata->mclk);
38
39 return 0;
40}
41
42static void evm_shutdown(struct snd_pcm_substream *substream)
43{
44 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
45 struct snd_soc_card *soc_card = rtd->card;
46 struct snd_soc_card_drvdata_davinci *drvdata =
47 snd_soc_card_get_drvdata(soc_card);
48
49 clk_disable_unprepare(drvdata->mclk);
50}
51
52static int evm_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params)
54{
55 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
56 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
57 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
58 struct snd_soc_card *soc_card = rtd->card;
59 int ret = 0;
60 unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
61 snd_soc_card_get_drvdata(soc_card))->sysclk;
62
63 /* set the codec system clock */
64 ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
65 if (ret < 0)
66 return ret;
67
68 /* set the CPU system clock */
69 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
70 if (ret < 0 && ret != -ENOTSUPP)
71 return ret;
72
73 return 0;
74}
75
76static const struct snd_soc_ops evm_ops = {
77 .startup = evm_startup,
78 .shutdown = evm_shutdown,
79 .hw_params = evm_hw_params,
80};
81
82/* davinci-evm machine dapm widgets */
83static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
84 SND_SOC_DAPM_HP("Headphone Jack", NULL),
85 SND_SOC_DAPM_LINE("Line Out", NULL),
86 SND_SOC_DAPM_MIC("Mic Jack", NULL),
87 SND_SOC_DAPM_LINE("Line In", NULL),
88};
89
90/* davinci-evm machine audio_mapnections to the codec pins */
91static const struct snd_soc_dapm_route audio_map[] = {
92 /* Headphone connected to HPLOUT, HPROUT */
93 {"Headphone Jack", NULL, "HPLOUT"},
94 {"Headphone Jack", NULL, "HPROUT"},
95
96 /* Line Out connected to LLOUT, RLOUT */
97 {"Line Out", NULL, "LLOUT"},
98 {"Line Out", NULL, "RLOUT"},
99
100 /* Mic connected to (MIC3L | MIC3R) */
101 {"MIC3L", NULL, "Mic Bias"},
102 {"MIC3R", NULL, "Mic Bias"},
103 {"Mic Bias", NULL, "Mic Jack"},
104
105 /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
106 {"LINE1L", NULL, "Line In"},
107 {"LINE2L", NULL, "Line In"},
108 {"LINE1R", NULL, "Line In"},
109 {"LINE2R", NULL, "Line In"},
110};
111
112/* Logic for a aic3x as connected on a davinci-evm */
113static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
114{
115 struct snd_soc_card *card = rtd->card;
116 struct device_node *np = card->dev->of_node;
117 int ret;
118
119 /* Add davinci-evm specific widgets */
120 snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
121 ARRAY_SIZE(aic3x_dapm_widgets));
122
123 if (np) {
124 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
125 if (ret)
126 return ret;
127 } else {
128 /* Set up davinci-evm specific audio path audio_map */
129 snd_soc_dapm_add_routes(&card->dapm, audio_map,
130 ARRAY_SIZE(audio_map));
131 }
132
133 /* not connected */
134 snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT");
135 snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM");
136 snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM");
137
138 return 0;
139}
140
141/* davinci-evm digital audio interface glue - connects codec <--> CPU */
142SND_SOC_DAILINK_DEFS(dm6446,
143 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
144 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
145 "tlv320aic3x-hifi")),
146 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
147
148static struct snd_soc_dai_link dm6446_evm_dai = {
149 .name = "TLV320AIC3X",
150 .stream_name = "AIC3X",
151 .init = evm_aic3x_init,
152 .ops = &evm_ops,
153 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
154 SND_SOC_DAIFMT_IB_NF,
155 SND_SOC_DAILINK_REG(dm6446),
156};
157
158SND_SOC_DAILINK_DEFS(dm355,
159 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp.1")),
160 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
161 "tlv320aic3x-hifi")),
162 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp.1")));
163
164static struct snd_soc_dai_link dm355_evm_dai = {
165 .name = "TLV320AIC3X",
166 .stream_name = "AIC3X",
167 .init = evm_aic3x_init,
168 .ops = &evm_ops,
169 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
170 SND_SOC_DAIFMT_IB_NF,
171 SND_SOC_DAILINK_REG(dm355),
172};
173
174#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
175SND_SOC_DAILINK_DEFS(dm365,
176 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
177 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
178 "tlv320aic3x-hifi")),
179 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
180#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
181SND_SOC_DAILINK_DEFS(dm365,
182 DAILINK_COMP_ARRAY(COMP_CPU("davinci-vcif")),
183 DAILINK_COMP_ARRAY(COMP_CODEC("cq93vc-codec", "cq93vc-hifi")),
184 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-vcif")));
185#endif
186
187static struct snd_soc_dai_link dm365_evm_dai = {
188#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
189 .name = "TLV320AIC3X",
190 .stream_name = "AIC3X",
191 .init = evm_aic3x_init,
192 .ops = &evm_ops,
193 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
194 SND_SOC_DAIFMT_IB_NF,
195 SND_SOC_DAILINK_REG(dm365),
196#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
197 .name = "Voice Codec - CQ93VC",
198 .stream_name = "CQ93",
199 SND_SOC_DAILINK_REG(dm365),
200#endif
201};
202
203SND_SOC_DAILINK_DEFS(dm6467_aic3x,
204 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
205 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.0-001a",
206 "tlv320aic3x-hifi")),
207 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
208
209SND_SOC_DAILINK_DEFS(dm6467_spdif,
210 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
211 DAILINK_COMP_ARRAY(COMP_CODEC("spdif_dit", "dit-hifi")),
212 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
213
214static struct snd_soc_dai_link dm6467_evm_dai[] = {
215 {
216 .name = "TLV320AIC3X",
217 .stream_name = "AIC3X",
218 .init = evm_aic3x_init,
219 .ops = &evm_ops,
220 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
221 SND_SOC_DAIFMT_IB_NF,
222 SND_SOC_DAILINK_REG(dm6467_aic3x),
223 },
224 {
225 .name = "McASP",
226 .stream_name = "spdif",
227 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
228 SND_SOC_DAIFMT_IB_NF,
229 SND_SOC_DAILINK_REG(dm6467_spdif),
230 },
231};
232
233SND_SOC_DAILINK_DEFS(da830,
234 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
235 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
236 "tlv320aic3x-hifi")),
237 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
238
239static struct snd_soc_dai_link da830_evm_dai = {
240 .name = "TLV320AIC3X",
241 .stream_name = "AIC3X",
242 .init = evm_aic3x_init,
243 .ops = &evm_ops,
244 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
245 SND_SOC_DAIFMT_IB_NF,
246 SND_SOC_DAILINK_REG(da830),
247};
248
249SND_SOC_DAILINK_DEFS(da850,
250 DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
251 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
252 "tlv320aic3x-hifi")),
253 DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
254
255static struct snd_soc_dai_link da850_evm_dai = {
256 .name = "TLV320AIC3X",
257 .stream_name = "AIC3X",
258 .init = evm_aic3x_init,
259 .ops = &evm_ops,
260 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
261 SND_SOC_DAIFMT_IB_NF,
262 SND_SOC_DAILINK_REG(da850),
263};
264
265/* davinci dm6446 evm audio machine driver */
266/*
267 * ASP0 in DM6446 EVM is clocked by U55, as configured by
268 * board-dm644x-evm.c using GPIOs from U18. There are six
269 * options; here we "know" we use a 48 KHz sample rate.
270 */
271static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
272 .sysclk = 12288000,
273};
274
275static struct snd_soc_card dm6446_snd_soc_card_evm = {
276 .name = "DaVinci DM6446 EVM",
277 .owner = THIS_MODULE,
278 .dai_link = &dm6446_evm_dai,
279 .num_links = 1,
280 .drvdata = &dm6446_snd_soc_card_drvdata,
281};
282
283/* davinci dm355 evm audio machine driver */
284/* ASP1 on DM355 EVM is clocked by an external oscillator */
285static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
286 .sysclk = 27000000,
287};
288
289static struct snd_soc_card dm355_snd_soc_card_evm = {
290 .name = "DaVinci DM355 EVM",
291 .owner = THIS_MODULE,
292 .dai_link = &dm355_evm_dai,
293 .num_links = 1,
294 .drvdata = &dm355_snd_soc_card_drvdata,
295};
296
297/* davinci dm365 evm audio machine driver */
298static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
299 .sysclk = 27000000,
300};
301
302static struct snd_soc_card dm365_snd_soc_card_evm = {
303 .name = "DaVinci DM365 EVM",
304 .owner = THIS_MODULE,
305 .dai_link = &dm365_evm_dai,
306 .num_links = 1,
307 .drvdata = &dm365_snd_soc_card_drvdata,
308};
309
310/* davinci dm6467 evm audio machine driver */
311static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
312 .sysclk = 27000000,
313};
314
315static struct snd_soc_card dm6467_snd_soc_card_evm = {
316 .name = "DaVinci DM6467 EVM",
317 .owner = THIS_MODULE,
318 .dai_link = dm6467_evm_dai,
319 .num_links = ARRAY_SIZE(dm6467_evm_dai),
320 .drvdata = &dm6467_snd_soc_card_drvdata,
321};
322
323static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
324 .sysclk = 24576000,
325};
326
327static struct snd_soc_card da830_snd_soc_card = {
328 .name = "DA830/OMAP-L137 EVM",
329 .owner = THIS_MODULE,
330 .dai_link = &da830_evm_dai,
331 .num_links = 1,
332 .drvdata = &da830_snd_soc_card_drvdata,
333};
334
335static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
336 .sysclk = 24576000,
337};
338
339static struct snd_soc_card da850_snd_soc_card = {
340 .name = "DA850/OMAP-L138 EVM",
341 .owner = THIS_MODULE,
342 .dai_link = &da850_evm_dai,
343 .num_links = 1,
344 .drvdata = &da850_snd_soc_card_drvdata,
345};
346
347#if defined(CONFIG_OF)
348
349/*
350 * The struct is used as place holder. It will be completely
351 * filled with data from dt node.
352 */
353SND_SOC_DAILINK_DEFS(evm,
354 DAILINK_COMP_ARRAY(COMP_EMPTY()),
355 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")),
356 DAILINK_COMP_ARRAY(COMP_EMPTY()));
357
358static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
359 .name = "TLV320AIC3X",
360 .stream_name = "AIC3X",
361 .ops = &evm_ops,
362 .init = evm_aic3x_init,
363 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
364 SND_SOC_DAIFMT_IB_NF,
365 SND_SOC_DAILINK_REG(evm),
366};
367
368static const struct of_device_id davinci_evm_dt_ids[] = {
369 {
370 .compatible = "ti,da830-evm-audio",
371 .data = (void *) &evm_dai_tlv320aic3x,
372 },
373 { /* sentinel */ }
374};
375MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
376
377/* davinci evm audio machine driver */
378static struct snd_soc_card evm_soc_card = {
379 .owner = THIS_MODULE,
380 .num_links = 1,
381};
382
383static int davinci_evm_probe(struct platform_device *pdev)
384{
385 struct device_node *np = pdev->dev.of_node;
386 const struct of_device_id *match;
387 struct snd_soc_dai_link *dai;
388 struct snd_soc_card_drvdata_davinci *drvdata = NULL;
389 struct clk *mclk;
390 int ret = 0;
391
392 match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
393 if (!match) {
394 dev_err(&pdev->dev, "Error: No device match found\n");
395 return -ENODEV;
396 }
397
398 dai = (struct snd_soc_dai_link *) match->data;
399
400 evm_soc_card.dai_link = dai;
401
402 dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0);
403 if (!dai->codecs->of_node)
404 return -EINVAL;
405
406 dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
407 if (!dai->cpus->of_node)
408 return -EINVAL;
409
410 dai->platforms->of_node = dai->cpus->of_node;
411
412 evm_soc_card.dev = &pdev->dev;
413 ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
414 if (ret)
415 return ret;
416
417 mclk = devm_clk_get(&pdev->dev, "mclk");
418 if (PTR_ERR(mclk) == -EPROBE_DEFER) {
419 return -EPROBE_DEFER;
420 } else if (IS_ERR(mclk)) {
421 dev_dbg(&pdev->dev, "mclk not found.\n");
422 mclk = NULL;
423 }
424
425 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
426 if (!drvdata)
427 return -ENOMEM;
428
429 drvdata->mclk = mclk;
430
431 ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
432
433 if (ret < 0) {
434 if (!drvdata->mclk) {
435 dev_err(&pdev->dev,
436 "No clock or clock rate defined.\n");
437 return -EINVAL;
438 }
439 drvdata->sysclk = clk_get_rate(drvdata->mclk);
440 } else if (drvdata->mclk) {
441 unsigned int requestd_rate = drvdata->sysclk;
442 clk_set_rate(drvdata->mclk, drvdata->sysclk);
443 drvdata->sysclk = clk_get_rate(drvdata->mclk);
444 if (drvdata->sysclk != requestd_rate)
445 dev_warn(&pdev->dev,
446 "Could not get requested rate %u using %u.\n",
447 requestd_rate, drvdata->sysclk);
448 }
449
450 snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
451 ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
452
453 if (ret)
454 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
455
456 return ret;
457}
458
459static struct platform_driver davinci_evm_driver = {
460 .probe = davinci_evm_probe,
461 .driver = {
462 .name = "davinci_evm",
463 .pm = &snd_soc_pm_ops,
464 .of_match_table = of_match_ptr(davinci_evm_dt_ids),
465 },
466};
467#endif
468
469static struct platform_device *evm_snd_device;
470
471static int __init evm_init(void)
472{
473 struct snd_soc_card *evm_snd_dev_data;
474 int index;
475 int ret;
476
477 /*
478 * If dtb is there, the devices will be created dynamically.
479 * Only register platfrom driver structure.
480 */
481#if defined(CONFIG_OF)
482 if (of_have_populated_dt())
483 return platform_driver_register(&davinci_evm_driver);
484#endif
485
486 if (machine_is_davinci_evm()) {
487 evm_snd_dev_data = &dm6446_snd_soc_card_evm;
488 index = 0;
489 } else if (machine_is_davinci_dm355_evm()) {
490 evm_snd_dev_data = &dm355_snd_soc_card_evm;
491 index = 1;
492 } else if (machine_is_davinci_dm365_evm()) {
493 evm_snd_dev_data = &dm365_snd_soc_card_evm;
494 index = 0;
495 } else if (machine_is_davinci_dm6467_evm()) {
496 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
497 index = 0;
498 } else if (machine_is_davinci_da830_evm()) {
499 evm_snd_dev_data = &da830_snd_soc_card;
500 index = 1;
501 } else if (machine_is_davinci_da850_evm()) {
502 evm_snd_dev_data = &da850_snd_soc_card;
503 index = 0;
504 } else
505 return -EINVAL;
506
507 evm_snd_device = platform_device_alloc("soc-audio", index);
508 if (!evm_snd_device)
509 return -ENOMEM;
510
511 platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
512 ret = platform_device_add(evm_snd_device);
513 if (ret)
514 platform_device_put(evm_snd_device);
515
516 return ret;
517}
518
519static void __exit evm_exit(void)
520{
521#if defined(CONFIG_OF)
522 if (of_have_populated_dt()) {
523 platform_driver_unregister(&davinci_evm_driver);
524 return;
525 }
526#endif
527
528 platform_device_unregister(evm_snd_device);
529}
530
531module_init(evm_init);
532module_exit(evm_exit);
533
534MODULE_AUTHOR("Vladimir Barinov");
535MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
536MODULE_LICENSE("GPL");
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
9#include <linux/module.h>
10#include <linux/moduleparam.h>
11#include <linux/timer.h>
12#include <linux/interrupt.h>
13#include <linux/platform_device.h>
14#include <linux/i2c.h>
15#include <linux/of_platform.h>
16#include <linux/clk.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/soc.h>
20
21#include <asm/dma.h>
22#include <asm/mach-types.h>
23
24struct snd_soc_card_drvdata_davinci {
25 struct clk *mclk;
26 unsigned sysclk;
27};
28
29static int evm_startup(struct snd_pcm_substream *substream)
30{
31 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
32 struct snd_soc_card *soc_card = rtd->card;
33 struct snd_soc_card_drvdata_davinci *drvdata =
34 snd_soc_card_get_drvdata(soc_card);
35
36 if (drvdata->mclk)
37 return clk_prepare_enable(drvdata->mclk);
38
39 return 0;
40}
41
42static void evm_shutdown(struct snd_pcm_substream *substream)
43{
44 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
45 struct snd_soc_card *soc_card = rtd->card;
46 struct snd_soc_card_drvdata_davinci *drvdata =
47 snd_soc_card_get_drvdata(soc_card);
48
49 clk_disable_unprepare(drvdata->mclk);
50}
51
52static int evm_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params)
54{
55 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
56 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
57 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
58 struct snd_soc_card *soc_card = rtd->card;
59 int ret = 0;
60 unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
61 snd_soc_card_get_drvdata(soc_card))->sysclk;
62
63 /* set the codec system clock */
64 ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
65 if (ret < 0)
66 return ret;
67
68 /* set the CPU system clock */
69 ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
70 if (ret < 0 && ret != -ENOTSUPP)
71 return ret;
72
73 return 0;
74}
75
76static const struct snd_soc_ops evm_ops = {
77 .startup = evm_startup,
78 .shutdown = evm_shutdown,
79 .hw_params = evm_hw_params,
80};
81
82/* davinci-evm machine dapm widgets */
83static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
84 SND_SOC_DAPM_HP("Headphone Jack", NULL),
85 SND_SOC_DAPM_LINE("Line Out", NULL),
86 SND_SOC_DAPM_MIC("Mic Jack", NULL),
87 SND_SOC_DAPM_LINE("Line In", NULL),
88};
89
90/* davinci-evm machine audio_mapnections to the codec pins */
91static const struct snd_soc_dapm_route audio_map[] = {
92 /* Headphone connected to HPLOUT, HPROUT */
93 {"Headphone Jack", NULL, "HPLOUT"},
94 {"Headphone Jack", NULL, "HPROUT"},
95
96 /* Line Out connected to LLOUT, RLOUT */
97 {"Line Out", NULL, "LLOUT"},
98 {"Line Out", NULL, "RLOUT"},
99
100 /* Mic connected to (MIC3L | MIC3R) */
101 {"MIC3L", NULL, "Mic Bias"},
102 {"MIC3R", NULL, "Mic Bias"},
103 {"Mic Bias", NULL, "Mic Jack"},
104
105 /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
106 {"LINE1L", NULL, "Line In"},
107 {"LINE2L", NULL, "Line In"},
108 {"LINE1R", NULL, "Line In"},
109 {"LINE2R", NULL, "Line In"},
110};
111
112/* Logic for a aic3x as connected on a davinci-evm */
113static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
114{
115 struct snd_soc_card *card = rtd->card;
116 struct device_node *np = card->dev->of_node;
117 int ret;
118
119 /* Add davinci-evm specific widgets */
120 snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
121 ARRAY_SIZE(aic3x_dapm_widgets));
122
123 if (np) {
124 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
125 if (ret)
126 return ret;
127 } else {
128 /* Set up davinci-evm specific audio path audio_map */
129 snd_soc_dapm_add_routes(&card->dapm, audio_map,
130 ARRAY_SIZE(audio_map));
131 }
132
133 /* not connected */
134 snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT");
135 snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM");
136 snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM");
137
138 return 0;
139}
140
141/*
142 * The struct is used as place holder. It will be completely
143 * filled with data from dt node.
144 */
145SND_SOC_DAILINK_DEFS(evm,
146 DAILINK_COMP_ARRAY(COMP_EMPTY()),
147 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")),
148 DAILINK_COMP_ARRAY(COMP_EMPTY()));
149
150static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
151 .name = "TLV320AIC3X",
152 .stream_name = "AIC3X",
153 .ops = &evm_ops,
154 .init = evm_aic3x_init,
155 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
156 SND_SOC_DAIFMT_IB_NF,
157 SND_SOC_DAILINK_REG(evm),
158};
159
160static const struct of_device_id davinci_evm_dt_ids[] = {
161 {
162 .compatible = "ti,da830-evm-audio",
163 .data = (void *) &evm_dai_tlv320aic3x,
164 },
165 { /* sentinel */ }
166};
167MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
168
169/* davinci evm audio machine driver */
170static struct snd_soc_card evm_soc_card = {
171 .owner = THIS_MODULE,
172 .num_links = 1,
173};
174
175static int davinci_evm_probe(struct platform_device *pdev)
176{
177 struct device_node *np = pdev->dev.of_node;
178 struct snd_soc_dai_link *dai;
179 struct snd_soc_card_drvdata_davinci *drvdata = NULL;
180 struct clk *mclk;
181 int ret = 0;
182
183 dai = (struct snd_soc_dai_link *) device_get_match_data(&pdev->dev);
184 if (!dai) {
185 dev_err(&pdev->dev, "Error: No device match found\n");
186 return -ENODEV;
187 }
188
189 evm_soc_card.dai_link = dai;
190
191 dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0);
192 if (!dai->codecs->of_node)
193 return -EINVAL;
194
195 dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
196 if (!dai->cpus->of_node)
197 return -EINVAL;
198
199 dai->platforms->of_node = dai->cpus->of_node;
200
201 evm_soc_card.dev = &pdev->dev;
202 ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
203 if (ret)
204 return ret;
205
206 mclk = devm_clk_get(&pdev->dev, "mclk");
207 if (PTR_ERR(mclk) == -EPROBE_DEFER) {
208 return -EPROBE_DEFER;
209 } else if (IS_ERR(mclk)) {
210 dev_dbg(&pdev->dev, "mclk not found.\n");
211 mclk = NULL;
212 }
213
214 drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
215 if (!drvdata)
216 return -ENOMEM;
217
218 drvdata->mclk = mclk;
219
220 ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
221
222 if (ret < 0) {
223 if (!drvdata->mclk) {
224 dev_err(&pdev->dev,
225 "No clock or clock rate defined.\n");
226 return -EINVAL;
227 }
228 drvdata->sysclk = clk_get_rate(drvdata->mclk);
229 } else if (drvdata->mclk) {
230 unsigned int requestd_rate = drvdata->sysclk;
231 clk_set_rate(drvdata->mclk, drvdata->sysclk);
232 drvdata->sysclk = clk_get_rate(drvdata->mclk);
233 if (drvdata->sysclk != requestd_rate)
234 dev_warn(&pdev->dev,
235 "Could not get requested rate %u using %u.\n",
236 requestd_rate, drvdata->sysclk);
237 }
238
239 snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
240 ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
241
242 if (ret)
243 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
244
245 return ret;
246}
247
248static struct platform_driver davinci_evm_driver = {
249 .probe = davinci_evm_probe,
250 .driver = {
251 .name = "davinci_evm",
252 .pm = &snd_soc_pm_ops,
253 .of_match_table = davinci_evm_dt_ids,
254 },
255};
256
257module_platform_driver(davinci_evm_driver);
258
259MODULE_AUTHOR("Vladimir Barinov");
260MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
261MODULE_LICENSE("GPL");