aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/cq93vc.c
blob: a320fb5a0e26afefba683311539584a71c6ade7c (plain) (blame)
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
/*
 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
 *
 * Copyright (C) 2010 Texas Instruments, Inc
 *
 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/mfd/davinci_voicecodec.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>

#include <mach/dm365.h>

#include "cq93vc.h"

static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
						unsigned int reg)
{
	struct davinci_vc *davinci_vc = codec->control_data;

	return readl(davinci_vc->base + reg);
}

static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
		       unsigned int value)
{
	struct davinci_vc *davinci_vc = codec->control_data;

	writel(value, davinci_vc->base + reg);

	return 0;
}

static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
};

static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;

	if (mute)
		cq93vc_write(codec, DAVINCI_VC_REG09,
			     reg | DAVINCI_VC_REG09_MUTE);
	else
		cq93vc_write(codec, DAVINCI_VC_REG09, reg);

	return 0;
}

static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
				 int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct davinci_vc *davinci_vc = codec->control_data;

	switch (freq) {
	case 22579200:
	case 27000000:
	case 33868800:
		davinci_vc->cq93vc.sysclk = freq;
		return 0;
	}

	return -EINVAL;
}

static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
				enum snd_soc_bias_level level)
{
	switch (level) {
	case SND_SOC_BIAS_ON:
		cq93vc_write(codec, DAVINCI_VC_REG12,
			     DAVINCI_VC_REG12_POWER_ALL_ON);
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		cq93vc_write(codec, DAVINCI_VC_REG12,
			     DAVINCI_VC_REG12_POWER_ALL_OFF);
		break;
	case SND_SOC_BIAS_OFF:
		/* force all power off */
		cq93vc_write(codec, DAVINCI_VC_REG12,
			     DAVINCI_VC_REG12_POWER_ALL_OFF);
		break;
	}
	codec->bias_level = level;

	return 0;
}

#define CQ93VC_RATES	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
#define CQ93VC_FORMATS	(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)

static struct snd_soc_dai_ops cq93vc_dai_ops = {
	.digital_mute	= cq93vc_mute,
	.set_sysclk	= cq93vc_set_dai_sysclk,
};

struct snd_soc_dai cq93vc_dai = {
	.name = "CQ93VC",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = CQ93VC_RATES,
		.formats = CQ93VC_FORMATS,},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = CQ93VC_RATES,
		.formats = CQ93VC_FORMATS,},
	.ops = &cq93vc_dai_ops,
};
EXPORT_SYMBOL_GPL(cq93vc_dai);

static int cq93vc_resume(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;

	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static struct snd_soc_codec *cq93vc_codec;

static int cq93vc_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct device *dev = &pdev->dev;
	struct snd_soc_codec *codec;
	int ret;

	socdev->card->codec = cq93vc_codec;
	codec = socdev->card->codec;

	/* Register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0) {
		dev_err(dev, "%s: failed to create pcms\n", pdev->name);
		return ret;
	}

	/* Set controls */
	snd_soc_add_controls(codec, cq93vc_snd_controls,
			     ARRAY_SIZE(cq93vc_snd_controls));

	/* Off, with power on */
	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static int cq93vc_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	snd_soc_free_pcms(socdev);
	snd_soc_dapm_free(socdev);

	return 0;
}

struct snd_soc_codec_device soc_codec_dev_cq93vc = {
	.probe = cq93vc_probe,
	.remove = cq93vc_remove,
	.resume = cq93vc_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc);

static __init int cq93vc_codec_probe(struct platform_device *pdev)
{
	struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret;

	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
	if (codec == NULL) {
		dev_dbg(davinci_vc->dev,
			"could not allocate memory for codec data\n");
		return -ENOMEM;
	}

	davinci_vc->cq93vc.codec = codec;

	cq93vc_dai.dev = &pdev->dev;

	mutex_init(&codec->mutex);
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);
	codec->dev = &pdev->dev;
	codec->name = "CQ93VC";
	codec->owner = THIS_MODULE;
	codec->read = cq93vc_read;
	codec->write = cq93vc_write;
	codec->set_bias_level = cq93vc_set_bias_level;
	codec->dai = &cq93vc_dai;
	codec->num_dai = 1;
	codec->control_data = davinci_vc;

	cq93vc_codec = codec;

	ret = snd_soc_register_codec(codec);
	if (ret) {
		dev_err(davinci_vc->dev, "failed to register codec\n");
		goto fail1;
	}

	ret = snd_soc_register_dai(&cq93vc_dai);
	if (ret) {
		dev_err(davinci_vc->dev, "could register dai\n");
		goto fail2;
	}
	return 0;

fail2:
	snd_soc_unregister_codec(codec);

fail1:
	kfree(codec);
	cq93vc_codec = NULL;

	return ret;
}

static int __devexit cq93vc_codec_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;

	snd_soc_unregister_dai(&cq93vc_dai);
	snd_soc_unregister_codec(&codec);

	kfree(codec);
	cq93vc_codec = NULL;

	return 0;
}

static struct platform_driver cq93vc_codec_driver = {
	.driver = {
		   .name = "cq93vc",
		   .owner = THIS_MODULE,
		   },
	.probe = cq93vc_codec_probe,
	.remove = __devexit_p(cq93vc_codec_remove),
};

static __init int cq93vc_init(void)
{
	return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe);
}
module_init(cq93vc_init);

static __exit void cq93vc_exit(void)
{
	platform_driver_unregister(&cq93vc_codec_driver);
}
module_exit(cq93vc_exit);

MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
MODULE_AUTHOR("Miguel Aguilar");
MODULE_LICENSE("GPL");