summaryrefslogtreecommitdiffstats
path: root/sound/soc/davinci/davinci-evm.c
blob: cab98a580053bd9978e2ba8317583654fe09cf74 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
/*
 * ASoC driver for TI DAVINCI EVM platform
 *
 * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
 * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/platform_data/edma.h>
#include <linux/i2c.h>
#include <linux/of_platform.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

#include <asm/dma.h>
#include <asm/mach-types.h>

#include <linux/edma.h>

#include "davinci-pcm.h"
#include "davinci-i2s.h"

struct snd_soc_card_drvdata_davinci {
	struct clk *mclk;
	unsigned sysclk;
};

static int evm_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *soc_card = rtd->codec->card;
	struct snd_soc_card_drvdata_davinci *drvdata =
		snd_soc_card_get_drvdata(soc_card);

	if (drvdata->mclk)
		return clk_prepare_enable(drvdata->mclk);

	return 0;
}

static void evm_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *soc_card = rtd->codec->card;
	struct snd_soc_card_drvdata_davinci *drvdata =
		snd_soc_card_get_drvdata(soc_card);

	if (drvdata->mclk)
		clk_disable_unprepare(drvdata->mclk);
}

static int evm_hw_params(struct snd_pcm_substream *substream,
			 struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *soc_card = codec->card;
	int ret = 0;
	unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
			   snd_soc_card_get_drvdata(soc_card))->sysclk;

	/* set the codec system clock */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	/* set the CPU system clock */
	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops evm_ops = {
	.startup = evm_startup,
	.shutdown = evm_shutdown,
	.hw_params = evm_hw_params,
};

/* davinci-evm machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

/* davinci-evm machine audio_mapnections to the codec pins */
static const struct snd_soc_dapm_route audio_map[] = {
	/* Headphone connected to HPLOUT, HPROUT */
	{"Headphone Jack", NULL, "HPLOUT"},
	{"Headphone Jack", NULL, "HPROUT"},

	/* Line Out connected to LLOUT, RLOUT */
	{"Line Out", NULL, "LLOUT"},
	{"Line Out", NULL, "RLOUT"},

	/* Mic connected to (MIC3L | MIC3R) */
	{"MIC3L", NULL, "Mic Bias"},
	{"MIC3R", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Mic Jack"},

	/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
	{"LINE1L", NULL, "Line In"},
	{"LINE2L", NULL, "Line In"},
	{"LINE1R", NULL, "Line In"},
	{"LINE2R", NULL, "Line In"},
};

/* Logic for a aic3x as connected on a davinci-evm */
static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_card *card = rtd->card;
	struct snd_soc_codec *codec = rtd->codec;
	struct device_node *np = codec->card->dev->of_node;
	int ret;

	/* Add davinci-evm specific widgets */
	snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
				  ARRAY_SIZE(aic3x_dapm_widgets));

	if (np) {
		ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
		if (ret)
			return ret;
	} else {
		/* Set up davinci-evm specific audio path audio_map */
		snd_soc_dapm_add_routes(&card->dapm, audio_map,
					ARRAY_SIZE(audio_map));
	}

	/* not connected */
	snd_soc_dapm_nc_pin(&codec->dapm, "MONO_LOUT");
	snd_soc_dapm_nc_pin(&codec->dapm, "HPLCOM");
	snd_soc_dapm_nc_pin(&codec->dapm, "HPRCOM");

	return 0;
}

/* davinci-evm digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link dm6446_evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai_name = "davinci-mcbsp",
	.codec_dai_name = "tlv320aic3x-hifi",
	.codec_name = "tlv320aic3x-codec.1-001b",
	.platform_name = "davinci-mcbsp",
	.init = evm_aic3x_init,
	.ops = &evm_ops,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
};

static struct snd_soc_dai_link dm355_evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai_name = "davinci-mcbsp.1",
	.codec_dai_name = "tlv320aic3x-hifi",
	.codec_name = "tlv320aic3x-codec.1-001b",
	.platform_name = "davinci-mcbsp.1",
	.init = evm_aic3x_init,
	.ops = &evm_ops,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
};

static struct snd_soc_dai_link dm365_evm_dai = {
#ifdef CONFIG_SND_DM365_AIC3X_CODEC
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai_name = "davinci-mcbsp",
	.codec_dai_name = "tlv320aic3x-hifi",
	.codec_name = "tlv320aic3x-codec.1-0018",
	.platform_name = "davinci-mcbsp",
	.init = evm_aic3x_init,
	.ops = &evm_ops,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
#elif defined(CONFIG_SND_DM365_VOICE_CODEC)
	.name = "Voice Codec - CQ93VC",
	.stream_name = "CQ93",
	.cpu_dai_name = "davinci-vcif",
	.codec_dai_name = "cq93vc-hifi",
	.codec_name = "cq93vc-codec",
	.platform_name = "davinci-vcif",
#endif
};

static struct snd_soc_dai_link dm6467_evm_dai[] = {
	{
		.name = "TLV320AIC3X",
		.stream_name = "AIC3X",
		.cpu_dai_name= "davinci-mcasp.0",
		.codec_dai_name = "tlv320aic3x-hifi",
		.platform_name = "davinci-mcasp.0",
		.codec_name = "tlv320aic3x-codec.0-001a",
		.init = evm_aic3x_init,
		.ops = &evm_ops,
		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
			   SND_SOC_DAIFMT_IB_NF,
	},
	{
		.name = "McASP",
		.stream_name = "spdif",
		.cpu_dai_name= "davinci-mcasp.1",
		.codec_dai_name = "dit-hifi",
		.codec_name = "spdif_dit",
		.platform_name = "davinci-mcasp.1",
		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
			   SND_SOC_DAIFMT_IB_NF,
	},
};

static struct snd_soc_dai_link da830_evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai_name = "davinci-mcasp.1",
	.codec_dai_name = "tlv320aic3x-hifi",
	.codec_name = "tlv320aic3x-codec.1-0018",
	.platform_name = "davinci-mcasp.1",
	.init = evm_aic3x_init,
	.ops = &evm_ops,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
};

static struct snd_soc_dai_link da850_evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai_name= "davinci-mcasp.0",
	.codec_dai_name = "tlv320aic3x-hifi",
	.codec_name = "tlv320aic3x-codec.1-0018",
	.platform_name = "davinci-mcasp.0",
	.init = evm_aic3x_init,
	.ops = &evm_ops,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
};

/* davinci dm6446 evm audio machine driver */
/*
 * ASP0 in DM6446 EVM is clocked by U55, as configured by
 * board-dm644x-evm.c using GPIOs from U18.  There are six
 * options; here we "know" we use a 48 KHz sample rate.
 */
static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
	.sysclk = 12288000,
};

static struct snd_soc_card dm6446_snd_soc_card_evm = {
	.name = "DaVinci DM6446 EVM",
	.owner = THIS_MODULE,
	.dai_link = &dm6446_evm_dai,
	.num_links = 1,
	.drvdata = &dm6446_snd_soc_card_drvdata,
};

/* davinci dm355 evm audio machine driver */
/* ASP1 on DM355 EVM is clocked by an external oscillator */
static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
	.sysclk = 27000000,
};

static struct snd_soc_card dm355_snd_soc_card_evm = {
	.name = "DaVinci DM355 EVM",
	.owner = THIS_MODULE,
	.dai_link = &dm355_evm_dai,
	.num_links = 1,
	.drvdata = &dm355_snd_soc_card_drvdata,
};

/* davinci dm365 evm audio machine driver */
static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
	.sysclk = 27000000,
};

static struct snd_soc_card dm365_snd_soc_card_evm = {
	.name = "DaVinci DM365 EVM",
	.owner = THIS_MODULE,
	.dai_link = &dm365_evm_dai,
	.num_links = 1,
	.drvdata = &dm365_snd_soc_card_drvdata,
};

/* davinci dm6467 evm audio machine driver */
static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
	.sysclk = 27000000,
};

static struct snd_soc_card dm6467_snd_soc_card_evm = {
	.name = "DaVinci DM6467 EVM",
	.owner = THIS_MODULE,
	.dai_link = dm6467_evm_dai,
	.num_links = ARRAY_SIZE(dm6467_evm_dai),
	.drvdata = &dm6467_snd_soc_card_drvdata,
};

static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
	.sysclk = 24576000,
};

static struct snd_soc_card da830_snd_soc_card = {
	.name = "DA830/OMAP-L137 EVM",
	.owner = THIS_MODULE,
	.dai_link = &da830_evm_dai,
	.num_links = 1,
	.drvdata = &da830_snd_soc_card_drvdata,
};

static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
	.sysclk = 24576000,
};

static struct snd_soc_card da850_snd_soc_card = {
	.name = "DA850/OMAP-L138 EVM",
	.owner = THIS_MODULE,
	.dai_link = &da850_evm_dai,
	.num_links = 1,
	.drvdata = &da850_snd_soc_card_drvdata,
};

#if defined(CONFIG_OF)

/*
 * The struct is used as place holder. It will be completely
 * filled with data from dt node.
 */
static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
	.name		= "TLV320AIC3X",
	.stream_name	= "AIC3X",
	.codec_dai_name	= "tlv320aic3x-hifi",
	.ops            = &evm_ops,
	.init           = evm_aic3x_init,
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
		   SND_SOC_DAIFMT_IB_NF,
};

static const struct of_device_id davinci_evm_dt_ids[] = {
	{
		.compatible = "ti,da830-evm-audio",
		.data = (void *) &evm_dai_tlv320aic3x,
	},
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);

/* davinci evm audio machine driver */
static struct snd_soc_card evm_soc_card = {
	.owner = THIS_MODULE,
	.num_links = 1,
};

static int davinci_evm_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	const struct of_device_id *match =
		of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
	struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data;
	struct snd_soc_card_drvdata_davinci *drvdata = NULL;
	struct clk *mclk;
	int ret = 0;

	evm_soc_card.dai_link = dai;

	dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0);
	if (!dai->codec_of_node)
		return -EINVAL;

	dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
	if (!dai->cpu_of_node)
		return -EINVAL;

	dai->platform_of_node = dai->cpu_of_node;

	evm_soc_card.dev = &pdev->dev;
	ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
	if (ret)
		return ret;

	mclk = devm_clk_get(&pdev->dev, "mclk");
	if (PTR_ERR(mclk) == -EPROBE_DEFER) {
		return -EPROBE_DEFER;
	} else if (IS_ERR(mclk)) {
		dev_dbg(&pdev->dev, "mclk not found.\n");
		mclk = NULL;
	}

	drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
	if (!drvdata)
		return -ENOMEM;

	drvdata->mclk = mclk;

	ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);

	if (ret < 0) {
		if (!drvdata->mclk) {
			dev_err(&pdev->dev,
				"No clock or clock rate defined.\n");
			return -EINVAL;
		}
		drvdata->sysclk = clk_get_rate(drvdata->mclk);
	} else if (drvdata->mclk) {
		unsigned int requestd_rate = drvdata->sysclk;
		clk_set_rate(drvdata->mclk, drvdata->sysclk);
		drvdata->sysclk = clk_get_rate(drvdata->mclk);
		if (drvdata->sysclk != requestd_rate)
			dev_warn(&pdev->dev,
				 "Could not get requested rate %u using %u.\n",
				 requestd_rate, drvdata->sysclk);
	}

	snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
	ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);

	if (ret)
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);

	return ret;
}

static int davinci_evm_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);

	return 0;
}

static struct platform_driver davinci_evm_driver = {
	.probe		= davinci_evm_probe,
	.remove		= davinci_evm_remove,
	.driver		= {
		.name	= "davinci_evm",
		.owner	= THIS_MODULE,
		.pm	= &snd_soc_pm_ops,
		.of_match_table = of_match_ptr(davinci_evm_dt_ids),
	},
};
#endif

static struct platform_device *evm_snd_device;

static int __init evm_init(void)
{
	struct snd_soc_card *evm_snd_dev_data;
	int index;
	int ret;

	/*
	 * If dtb is there, the devices will be created dynamically.
	 * Only register platfrom driver structure.
	 */
#if defined(CONFIG_OF)
	if (of_have_populated_dt())
		return platform_driver_register(&davinci_evm_driver);
#endif

	if (machine_is_davinci_evm()) {
		evm_snd_dev_data = &dm6446_snd_soc_card_evm;
		index = 0;
	} else if (machine_is_davinci_dm355_evm()) {
		evm_snd_dev_data = &dm355_snd_soc_card_evm;
		index = 1;
	} else if (machine_is_davinci_dm365_evm()) {
		evm_snd_dev_data = &dm365_snd_soc_card_evm;
		index = 0;
	} else if (machine_is_davinci_dm6467_evm()) {
		evm_snd_dev_data = &dm6467_snd_soc_card_evm;
		index = 0;
	} else if (machine_is_davinci_da830_evm()) {
		evm_snd_dev_data = &da830_snd_soc_card;
		index = 1;
	} else if (machine_is_davinci_da850_evm()) {
		evm_snd_dev_data = &da850_snd_soc_card;
		index = 0;
	} else
		return -EINVAL;

	evm_snd_device = platform_device_alloc("soc-audio", index);
	if (!evm_snd_device)
		return -ENOMEM;

	platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
	ret = platform_device_add(evm_snd_device);
	if (ret)
		platform_device_put(evm_snd_device);

	return ret;
}

static void __exit evm_exit(void)
{
#if defined(CONFIG_OF)
	if (of_have_populated_dt()) {
		platform_driver_unregister(&davinci_evm_driver);
		return;
	}
#endif

	platform_device_unregister(evm_snd_device);
}

module_init(evm_init);
module_exit(evm_exit);

MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
MODULE_LICENSE("GPL");