[deliverable/linux.git] / sound / soc / codecs / cq93vc.c

/*
 * 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, codec->suspend_bias_level);

	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");
Commit	Line	Data
b56e972b MA	1	/*
	2	* ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
	3	*
	4	* Copyright (C) 2010 Texas Instruments, Inc
	5	*
	6	* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22	#include <linux/module.h>
	23	#include <linux/moduleparam.h>
	24	#include <linux/init.h>
	25	#include <linux/io.h>
	26	#include <linux/delay.h>
	27	#include <linux/pm.h>
	28	#include <linux/platform_device.h>
	29	#include <linux/device.h>
923a0042	30	#include <linux/slab.h>
b56e972b MA	31	#include <linux/clk.h>
	32	#include <linux/mfd/davinci_voicecodec.h>
	33
	34	#include <sound/core.h>
	35	#include <sound/pcm.h>
	36	#include <sound/pcm_params.h>
	37	#include <sound/soc.h>
	38	#include <sound/soc-dai.h>
	39	#include <sound/soc-dapm.h>
	40	#include <sound/initval.h>
	41
	42	#include <mach/dm365.h>
	43
	44	#include "cq93vc.h"
	45
	46	static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
	47	unsigned int reg)
	48	{
	49	struct davinci_vc *davinci_vc = codec->control_data;
	50
	51	return readl(davinci_vc->base + reg);
	52	}
	53
	54	static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
	55	unsigned int value)
	56	{
	57	struct davinci_vc *davinci_vc = codec->control_data;
	58
	59	writel(value, davinci_vc->base + reg);
	60
	61	return 0;
	62	}
	63
	64	static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
	65	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
	66	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
	67	};
	68
	69	static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
	70	{
	71	struct snd_soc_codec *codec = dai->codec;
	72	u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;
	73
	74	if (mute)
	75	cq93vc_write(codec, DAVINCI_VC_REG09,
	76	reg \| DAVINCI_VC_REG09_MUTE);
	77	else
	78	cq93vc_write(codec, DAVINCI_VC_REG09, reg);
	79
	80	return 0;
	81	}
	82
	83	static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	84	int clk_id, unsigned int freq, int dir)
	85	{
	86	struct snd_soc_codec *codec = codec_dai->codec;
	87	struct davinci_vc *davinci_vc = codec->control_data;
	88
	89	switch (freq) {
	90	case 22579200:
	91	case 27000000:
	92	case 33868800:
	93	davinci_vc->cq93vc.sysclk = freq;
	94	return 0;
95	}
96
97	return -EINVAL;
98	}
99
100	static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
101	enum snd_soc_bias_level level)
102	{
103	switch (level) {
104	case SND_SOC_BIAS_ON:
105	cq93vc_write(codec, DAVINCI_VC_REG12,
106	DAVINCI_VC_REG12_POWER_ALL_ON);
107	break;
108	case SND_SOC_BIAS_PREPARE:
109	break;
110	case SND_SOC_BIAS_STANDBY:
111	cq93vc_write(codec, DAVINCI_VC_REG12,
112	DAVINCI_VC_REG12_POWER_ALL_OFF);
113	break;
114	case SND_SOC_BIAS_OFF:
115	/* force all power off */
116	cq93vc_write(codec, DAVINCI_VC_REG12,
117	DAVINCI_VC_REG12_POWER_ALL_OFF);
118	break;
119	}
120	codec->bias_level = level;
121
122	return 0;
123	}
124
125	#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000)
126	#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 \| SNDRV_PCM_FMTBIT_S16_LE)
127
128	static struct snd_soc_dai_ops cq93vc_dai_ops = {
129	.digital_mute = cq93vc_mute,
130	.set_sysclk = cq93vc_set_dai_sysclk,
131	};
132
133	struct snd_soc_dai cq93vc_dai = {
134	.name = "CQ93VC",
135	.playback = {
136	.stream_name = "Playback",
137	.channels_min = 1,
138	.channels_max = 2,
139	.rates = CQ93VC_RATES,
140	.formats = CQ93VC_FORMATS,},
141	.capture = {
142	.stream_name = "Capture",
143	.channels_min = 1,
144	.channels_max = 2,
145	.rates = CQ93VC_RATES,
146	.formats = CQ93VC_FORMATS,},
147	.ops = &cq93vc_dai_ops,
148	};
149	EXPORT_SYMBOL_GPL(cq93vc_dai);
150
151	static int cq93vc_resume(struct platform_device *pdev)
152	{
153	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
154	struct snd_soc_codec *codec = socdev->card->codec;
155
156	cq93vc_set_bias_level(codec, codec->suspend_bias_level);
157
158	return 0;
159	}
160
161	static struct snd_soc_codec *cq93vc_codec;
162
163	static int cq93vc_probe(struct platform_device *pdev)
164	{
165	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
166	struct device *dev = &pdev->dev;
167	struct snd_soc_codec *codec;
168	int ret;
169
170	socdev->card->codec = cq93vc_codec;
171	codec = socdev->card->codec;
172
173	/* Register pcms */
174	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
175	if (ret < 0) {
176	dev_err(dev, "%s: failed to create pcms\n", pdev->name);
177	return ret;
178	}
179
180	/* Set controls */
181	snd_soc_add_controls(codec, cq93vc_snd_controls,
182	ARRAY_SIZE(cq93vc_snd_controls));
183
184	/* Off, with power on */
185	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
186
187	return 0;
188	}
189
190	static int cq93vc_remove(struct platform_device *pdev)
191	{
192	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
193
194	snd_soc_free_pcms(socdev);
195	snd_soc_dapm_free(socdev);
196
197	return 0;
198	}
199
200	struct snd_soc_codec_device soc_codec_dev_cq93vc = {
201	.probe = cq93vc_probe,
202	.remove = cq93vc_remove,
203	.resume = cq93vc_resume,
204	};
205	EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc);
206
207	static __init int cq93vc_codec_probe(struct platform_device *pdev)
208	{
209	struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
210	struct snd_soc_codec *codec;
211	int ret;
212
213	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
214	if (codec == NULL) {
215	dev_dbg(davinci_vc->dev,
216	"could not allocate memory for codec data\n");
217	return -ENOMEM;
218	}
219
220	davinci_vc->cq93vc.codec = codec;
221
222	cq93vc_dai.dev = &pdev->dev;
223
224	mutex_init(&codec->mutex);
225	INIT_LIST_HEAD(&codec->dapm_widgets);
226	INIT_LIST_HEAD(&codec->dapm_paths);
227	codec->dev = &pdev->dev;
228	codec->name = "CQ93VC";
229	codec->owner = THIS_MODULE;
230	codec->read = cq93vc_read;
231	codec->write = cq93vc_write;
232	codec->set_bias_level = cq93vc_set_bias_level;
233	codec->dai = &cq93vc_dai;
234	codec->num_dai = 1;
235	codec->control_data = davinci_vc;
236
237	cq93vc_codec = codec;
238
239	ret = snd_soc_register_codec(codec);
240	if (ret) {
241	dev_err(davinci_vc->dev, "failed to register codec\n");
242	goto fail1;
243	}
244
245	ret = snd_soc_register_dai(&cq93vc_dai);
246	if (ret) {
247	dev_err(davinci_vc->dev, "could register dai\n");
248	goto fail2;
249	}
250	return 0;
251
252	fail2:
253	snd_soc_unregister_codec(codec);
254
255	fail1:
256	kfree(codec);
257	cq93vc_codec = NULL;
258
259	return ret;
260	}
261
262	static int __devexit cq93vc_codec_remove(struct platform_device *pdev)
263	{
264	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
265	struct snd_soc_codec *codec = socdev->card->codec;
266
267	snd_soc_unregister_dai(&cq93vc_dai);
268	snd_soc_unregister_codec(&codec);
269
270	kfree(codec);
271	cq93vc_codec = NULL;
272
273	return 0;
274	}
275
276	static struct platform_driver cq93vc_codec_driver = {
277	.driver = {
278	.name = "cq93vc",
279	.owner = THIS_MODULE,
280	},
281	.probe = cq93vc_codec_probe,
282	.remove = __devexit_p(cq93vc_codec_remove),
283	};
284
285	static __init int cq93vc_init(void)
286	{
287	return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe);
288	}
289	module_init(cq93vc_init);
290
291	static __exit void cq93vc_exit(void)
292	{
293	platform_driver_unregister(&cq93vc_codec_driver);
294	}
295	module_exit(cq93vc_exit);
296
297	MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
298	MODULE_AUTHOR("Miguel Aguilar");
299	MODULE_LICENSE("GPL");