summaryrefslogtreecommitdiff
path: root/sound/soc/imx/imx-3stack-cs42888.c
blob: 935a4e544029b4b951df7325f6eb0f2c0104ee1a (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
/*
 * Copyright (C) 2010 Freescale  Semiconductor, Inc. All Rights Reserved.
 */

/*
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/soc-dai.h>

#include <mach/hardware.h>
#include <mach/clock.h>

#include "imx-pcm.h"
#include "imx-esai.h"
#include "../codecs/cs42888.h"

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
#include <linux/mxc_asrc.h>
#endif

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
static unsigned int asrc_rates[] = {
	0,
	8000,
	11025,
	16000,
	22050,
	32000,
	44100,
	48000,
	64000,
	88200,
	96000,
	176400,
	192000,
};

struct asrc_esai {
	unsigned int cpu_dai_rates;
	unsigned int codec_dai_rates;
	enum asrc_pair_index asrc_index;
	unsigned int output_sample_rate;
};

static struct asrc_esai asrc_esai_data;

#endif

struct imx_3stack_pcm_state {
	int lr_clk_active;
};

static struct imx_3stack_pcm_state clk_state;

static int imx_3stack_startup(struct snd_pcm_substream *substream)
{
	clk_state.lr_clk_active++;
#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
	if (asrc_esai_data.output_sample_rate >= 32000) {
		struct snd_soc_pcm_runtime *rtd = substream->private_data;
		struct snd_soc_dai_link *pcm_link = rtd->dai;
		struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
		struct snd_soc_dai *codec_dai = pcm_link->codec_dai;
		asrc_esai_data.cpu_dai_rates = cpu_dai->playback.rates;
		asrc_esai_data.codec_dai_rates = codec_dai->playback.rates;
		cpu_dai->playback.rates =
		    SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT;
		codec_dai->playback.rates =
		    SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT;
	}
#endif

	return 0;
}

static void imx_3stack_shutdown(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai_link *pcm_link = rtd->dai;

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
	if (asrc_esai_data.output_sample_rate >= 32000) {
		struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
		codec_dai->playback.rates = asrc_esai_data.codec_dai_rates;
		cpu_dai->playback.rates = asrc_esai_data.cpu_dai_rates;
		asrc_release_pair(asrc_esai_data.asrc_index);
	}
#endif

	clk_state.lr_clk_active--;
}

static int imx_3stack_surround_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_link *pcm_link = rtd->dai;
	struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
	struct snd_soc_dai *codec_dai = pcm_link->codec_dai;
	unsigned int rate = params_rate(params);
	u32 dai_format;
	unsigned int mclk_freq = 0, lrclk_ratio = 0;
	unsigned int channel = params_channels(params);
	struct imx_esai *esai_mode = (struct imx_esai *)cpu_dai->private_data;
	if (clk_state.lr_clk_active > 1)
		return 0;

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
	if (asrc_esai_data.output_sample_rate >= 32000) {
		unsigned int asrc_input_rate = rate;
		struct mxc_runtime_data *pcm_data =
		    substream->runtime->private_data;
		struct asrc_config config;
		int retVal = 0;;

		retVal = asrc_req_pair(channel, &asrc_esai_data.asrc_index);
		if (retVal < 0) {
			pr_err("Fail to request asrc pair\n");
			return -1;
		}

		config.pair = asrc_esai_data.asrc_index;
		config.channel_num = channel;
		config.input_sample_rate = asrc_input_rate;
		config.output_sample_rate = asrc_esai_data.output_sample_rate;
		config.inclk = INCLK_NONE;
		config.word_width = 32;
		config.outclk = OUTCLK_ESAI_TX;
		retVal = asrc_config_pair(&config);
		if (retVal < 0) {
			pr_err("Fail to config asrc\n");
			asrc_release_pair(asrc_esai_data.asrc_index);
			return retVal;
		}
		rate = asrc_esai_data.output_sample_rate;
		pcm_data->asrc_index = asrc_esai_data.asrc_index;
		pcm_data->asrc_enable = 1;
	}
#endif

	switch (rate) {
	case 32000:
		lrclk_ratio = 3;
		mclk_freq = 12288000;
		break;
	case 48000:
		lrclk_ratio = 3;
		mclk_freq = 12288000;
		break;
	case 64000:
		lrclk_ratio = 1;
		mclk_freq = 12288000;
		break;
	case 96000:
		lrclk_ratio = 1;
		mclk_freq = 12288000;
		break;
	case 128000:
		lrclk_ratio = 1;
		mclk_freq = 12288000;
		break;
	case 44100:
		lrclk_ratio = 3;
		mclk_freq = 11289600;
		break;
	case 88200:
		lrclk_ratio = 1;
		mclk_freq = 11289600;
		break;
	case 176400:
		lrclk_ratio = 0;
		mclk_freq = 11289600;
		break;
	case 192000:
		lrclk_ratio = 0;
		mclk_freq = 12288000;
		break;
	default:
		pr_info("Rate not support.\n");
		return -EINVAL;;
	}

	dai_format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
	    SND_SOC_DAIFMT_CBS_CFS;

	esai_mode->sync_mode = 0;
	esai_mode->network_mode = 1;

	/* set cpu DAI configuration */
	snd_soc_dai_set_fmt(cpu_dai, dai_format);
	/* set i.MX active slot mask */
	snd_soc_dai_set_tdm_slot(cpu_dai, channel == 1 ? 0x1 : 0x3, 2);
	/* set the ESAI system clock as output */
	snd_soc_dai_set_sysclk(cpu_dai, ESAI_CLK_EXTAL,
		mclk_freq, SND_SOC_CLOCK_OUT);
	/* set the ratio */
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PSR, 1);
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PM, 0);
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_FP, lrclk_ratio);
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PSR, 1);
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PM, 0);
	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_FP, lrclk_ratio);


	/* set codec DAI configuration */
	snd_soc_dai_set_fmt(codec_dai, dai_format);
	/* set codec Master clock */
	snd_soc_dai_set_sysclk(codec_dai, 0, mclk_freq, SND_SOC_CLOCK_IN);

	return 0;
}

static struct snd_soc_ops imx_3stack_surround_ops = {
	.startup = imx_3stack_startup,
	.shutdown = imx_3stack_shutdown,
	.hw_params = imx_3stack_surround_hw_params,
};

static const struct snd_soc_dapm_widget imx_3stack_dapm_widgets[] = {
	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
	SND_SOC_DAPM_LINE("Line In Jack", NULL),
};

static const struct snd_soc_dapm_route audio_map[] = {
	/* Line out jack */
	{"Line Out Jack", NULL, "AOUT1L"},
	{"Line Out Jack", NULL, "AOUT1R"},
	{"Line Out Jack", NULL, "AOUT2L"},
	{"Line Out Jack", NULL, "AOUT2R"},
	{"Line Out Jack", NULL, "AOUT3L"},
	{"Line Out Jack", NULL, "AOUT3R"},
	{"Line Out Jack", NULL, "AOUT4L"},
	{"Line Out Jack", NULL, "AOUT4R"},
	{"AIN1L", NULL, "Line In Jack"},
	{"AIN1R", NULL, "Line In Jack"},
	{"AIN2L", NULL, "Line In Jack"},
	{"AIN2R", NULL, "Line In Jack"},
};

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
static int asrc_func;

static const char *asrc_function[] =
    { "disable", "32KHz", "44.1KHz",
	"48KHz", "64KHz", "88.2KHz", "96KHz", "176.4KHz", "192KHz"
};

static const struct soc_enum asrc_enum[] = {
	SOC_ENUM_SINGLE_EXT(9, asrc_function),
};

static int asrc_get_rate(struct snd_kcontrol *kcontrol,
			 struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.enumerated.item[0] = asrc_func;
	return 0;
}

static int asrc_set_rate(struct snd_kcontrol *kcontrol,
			 struct snd_ctl_elem_value *ucontrol)
{
	if (asrc_func == ucontrol->value.enumerated.item[0])
		return 0;

	asrc_func = ucontrol->value.enumerated.item[0];
	asrc_esai_data.output_sample_rate = asrc_rates[asrc_func + 4];

	return 1;
}

static const struct snd_kcontrol_new asrc_controls[] = {
	SOC_ENUM_EXT("ASRC", asrc_enum[0], asrc_get_rate,
		     asrc_set_rate),
};

#endif

static int imx_3stack_cs42888_init(struct snd_soc_codec *codec)
{

#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
	int i;
	int ret;
	for (i = 0; i < ARRAY_SIZE(asrc_controls); i++) {
		ret = snd_ctl_add(codec->card,
				  snd_soc_cnew(&asrc_controls[i], codec, NULL));
		if (ret < 0)
			return ret;
	}
	asrc_esai_data.output_sample_rate = asrc_rates[asrc_func + 4];
#endif

	snd_soc_dapm_new_controls(codec, imx_3stack_dapm_widgets,
				  ARRAY_SIZE(imx_3stack_dapm_widgets));

	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	snd_soc_dapm_sync(codec);

	return 0;
}

static struct snd_soc_dai_link imx_3stack_dai = {
	.name = "cs42888",
	.stream_name = "cs42888",
	.codec_dai = &cs42888_dai,
	.init = imx_3stack_cs42888_init,
	.ops = &imx_3stack_surround_ops,
};

static int imx_3stack_card_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	kfree(socdev->codec_data);
	return 0;
}

static struct snd_soc_card snd_soc_card_imx_3stack = {
	.name = "imx-3stack",
	.platform = &imx_soc_platform,
	.dai_link = &imx_3stack_dai,
	.num_links = 1,
	.remove = imx_3stack_card_remove,
};

static struct snd_soc_device imx_3stack_snd_devdata = {
	.card = &snd_soc_card_imx_3stack,
	.codec_dev = &soc_codec_device_cs42888,
};

/*
 * This function will register the snd_soc_pcm_link drivers.
 */
static int __devinit imx_3stack_cs42888_probe(struct platform_device *pdev)
{
	imx_3stack_dai.cpu_dai = &imx_esai_dai[2];
	imx_3stack_dai.cpu_dai->dev = &pdev->dev;

	return 0;
}

static int __devexit imx_3stack_cs42888_remove(struct platform_device *pdev)
{
	return 0;
}

static struct platform_driver imx_3stack_cs42888_driver = {
	.probe = imx_3stack_cs42888_probe,
	.remove = __devexit_p(imx_3stack_cs42888_remove),
	.driver = {
		   .name = "imx-3stack-cs42888",
		   .owner = THIS_MODULE,
		   },
};

static struct platform_device *imx_3stack_snd_device;

static int __init imx_3stack_asoc_init(void)
{
	int ret;
	ret = platform_driver_register(&imx_3stack_cs42888_driver);
	if (ret < 0)
		goto exit;

	imx_3stack_snd_device = platform_device_alloc("soc-audio", 1);
	if (!imx_3stack_snd_device)
		goto err_device_alloc;
	platform_set_drvdata(imx_3stack_snd_device, &imx_3stack_snd_devdata);
	imx_3stack_snd_devdata.dev = &imx_3stack_snd_device->dev;
	ret = platform_device_add(imx_3stack_snd_device);
	if (0 == ret && snd_soc_card_imx_3stack.codec != NULL)
		goto exit;

	platform_device_unregister(imx_3stack_snd_device);
err_device_alloc:
	platform_driver_unregister(&imx_3stack_cs42888_driver);
exit:
	return ret;
}

static void __exit imx_3stack_asoc_exit(void)
{
	platform_driver_unregister(&imx_3stack_cs42888_driver);
	platform_device_unregister(imx_3stack_snd_device);
}

module_init(imx_3stack_asoc_init);
module_exit(imx_3stack_asoc_exit);

MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("ALSA SoC cs42888 imx_3stack");
MODULE_LICENSE("GPL");