[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 <linux/spi/spi.h>

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

#include <mach/dm365.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->dapm.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,
};

static struct snd_soc_dai_driver cq93vc_dai = {
	.name = "cq93vc-hifi",
	.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,
};

static int cq93vc_resume(struct snd_soc_codec *codec)
{
	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static int cq93vc_probe(struct snd_soc_codec *codec)
{
	struct davinci_vc *davinci_vc = snd_soc_codec_get_drvdata(codec);

	davinci_vc->cq93vc.codec = codec;
	codec->control_data = davinci_vc;

	/* 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 snd_soc_codec *codec)
{
	cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
	.read = cq93vc_read,
	.write = cq93vc_write,
	.set_bias_level = cq93vc_set_bias_level,
	.probe = cq93vc_probe,
	.remove = cq93vc_remove,
	.resume = cq93vc_resume,
};

static int cq93vc_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
}

static int cq93vc_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

static struct platform_driver cq93vc_codec_driver = {
	.driver = {
			.name = "cq93vc-codec",
			.owner = THIS_MODULE,
	},

	.probe = cq93vc_platform_probe,
	.remove = __devexit_p(cq93vc_platform_remove),
};

static int __init cq93vc_init(void)
{
	return platform_driver_register(&cq93vc_codec_driver);
}
module_init(cq93vc_init);

static void __exit 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>
b56e972b MA	32	#include <linux/mfd/davinci_voicecodec.h>
f0fba2ad	33	#include <linux/spi/spi.h>
b56e972b MA	34
	35	#include <sound/core.h>
	36	#include <sound/pcm.h>
	37	#include <sound/pcm_params.h>
	38	#include <sound/soc.h>
b56e972b MA	39	#include <sound/initval.h>
	40
	41	#include <mach/dm365.h>
	42
b56e972b MA	43	static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
	44	unsigned int reg)
	45	{
	46	struct davinci_vc *davinci_vc = codec->control_data;
	47
	48	return readl(davinci_vc->base + reg);
	49	}
	50
	51	static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
	52	unsigned int value)
	53	{
	54	struct davinci_vc *davinci_vc = codec->control_data;
	55
	56	writel(value, davinci_vc->base + reg);
	57
	58	return 0;
	59	}
	60
	61	static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
	62	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
	63	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
	64	};
	65
	66	static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
	67	{
	68	struct snd_soc_codec *codec = dai->codec;
	69	u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;
	70
	71	if (mute)
	72	cq93vc_write(codec, DAVINCI_VC_REG09,
	73	reg \| DAVINCI_VC_REG09_MUTE);
	74	else
	75	cq93vc_write(codec, DAVINCI_VC_REG09, reg);
	76
	77	return 0;
	78	}
	79
	80	static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	81	int clk_id, unsigned int freq, int dir)
	82	{
	83	struct snd_soc_codec *codec = codec_dai->codec;
	84	struct davinci_vc *davinci_vc = codec->control_data;
	85
	86	switch (freq) {
	87	case 22579200:
	88	case 27000000:
	89	case 33868800:
	90	davinci_vc->cq93vc.sysclk = freq;
	91	return 0;
	92	}
	93
	94	return -EINVAL;
	95	}
	96
	97	static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
	98	enum snd_soc_bias_level level)
	99	{
	100	switch (level) {
	101	case SND_SOC_BIAS_ON:
	102	cq93vc_write(codec, DAVINCI_VC_REG12,
	103	DAVINCI_VC_REG12_POWER_ALL_ON);
	104	break;
	105	case SND_SOC_BIAS_PREPARE:
	106	break;
107	case SND_SOC_BIAS_STANDBY:
108	cq93vc_write(codec, DAVINCI_VC_REG12,
109	DAVINCI_VC_REG12_POWER_ALL_OFF);
110	break;
111	case SND_SOC_BIAS_OFF:
112	/* force all power off */
113	cq93vc_write(codec, DAVINCI_VC_REG12,
114	DAVINCI_VC_REG12_POWER_ALL_OFF);
115	break;
116	}
ce6120cc	117	codec->dapm.bias_level = level;
b56e972b MA	118
	119	return 0;
	120	}
	121
	122	#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000)
	123	#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 \| SNDRV_PCM_FMTBIT_S16_LE)
	124
	125	static struct snd_soc_dai_ops cq93vc_dai_ops = {
	126	.digital_mute = cq93vc_mute,
	127	.set_sysclk = cq93vc_set_dai_sysclk,
	128	};
	129
f0fba2ad LG	130	static struct snd_soc_dai_driver cq93vc_dai = {
f0fba2ad LG	131	.name = "cq93vc-hifi",
b56e972b MA	132	.playback = {
	133	.stream_name = "Playback",
	134	.channels_min = 1,
	135	.channels_max = 2,
	136	.rates = CQ93VC_RATES,
	137	.formats = CQ93VC_FORMATS,},
	138	.capture = {
	139	.stream_name = "Capture",
	140	.channels_min = 1,
	141	.channels_max = 2,
	142	.rates = CQ93VC_RATES,
	143	.formats = CQ93VC_FORMATS,},
	144	.ops = &cq93vc_dai_ops,
	145	};
b56e972b	146
f0fba2ad	147	static int cq93vc_resume(struct snd_soc_codec *codec)
b56e972b	148	{
29e189c2	149	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
b56e972b MA	150
	151	return 0;
	152	}
	153
f0fba2ad	154	static int cq93vc_probe(struct snd_soc_codec *codec)
b56e972b	155	{
0fa63b69	156	struct davinci_vc *davinci_vc = snd_soc_codec_get_drvdata(codec);
f0fba2ad LG	157
	158	davinci_vc->cq93vc.codec = codec;
	159	codec->control_data = davinci_vc;
b56e972b MA	160
	161	/* Set controls */
	162	snd_soc_add_controls(codec, cq93vc_snd_controls,
	163	ARRAY_SIZE(cq93vc_snd_controls));
	164
	165	/* Off, with power on */
	166	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	167
	168	return 0;
	169	}
	170
f0fba2ad	171	static int cq93vc_remove(struct snd_soc_codec *codec)
b56e972b	172	{
f0fba2ad	173	cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
b56e972b MA	174
	175	return 0;
	176	}
	177
f0fba2ad LG	178	static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
	179	.read = cq93vc_read,
	180	.write = cq93vc_write,
	181	.set_bias_level = cq93vc_set_bias_level,
b56e972b MA	182	.probe = cq93vc_probe,
	183	.remove = cq93vc_remove,
	184	.resume = cq93vc_resume,
	185	};
b56e972b	186
f0fba2ad	187	static int cq93vc_platform_probe(struct platform_device *pdev)
b56e972b	188	{
f0fba2ad LG	189	return snd_soc_register_codec(&pdev->dev,
f0fba2ad LG	190	&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
b56e972b MA	191	}
b56e972b MA	192
f0fba2ad	193	static int cq93vc_platform_remove(struct platform_device *pdev)
b56e972b	194	{
f0fba2ad	195	snd_soc_unregister_codec(&pdev->dev);
b56e972b MA	196	return 0;
	197	}
	198
	199	static struct platform_driver cq93vc_codec_driver = {
	200	.driver = {
f0fba2ad LG	201	.name = "cq93vc-codec",
	202	.owner = THIS_MODULE,
	203	},
	204
	205	.probe = cq93vc_platform_probe,
	206	.remove = __devexit_p(cq93vc_platform_remove),
b56e972b MA	207	};
b56e972b MA	208
f0fba2ad	209	static int __init cq93vc_init(void)
b56e972b	210	{
f0fba2ad	211	return platform_driver_register(&cq93vc_codec_driver);
b56e972b MA	212	}
	213	module_init(cq93vc_init);
	214
f0fba2ad	215	static void __exit cq93vc_exit(void)
b56e972b MA	216	{
	217	platform_driver_unregister(&cq93vc_codec_driver);
	218	}
	219	module_exit(cq93vc_exit);
	220
	221	MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
	222	MODULE_AUTHOR("Miguel Aguilar");
	223	MODULE_LICENSE("GPL");