[GitHub/mt8127/android_kernel_alcatel_ttab.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>

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 const 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 = codec->dev->platform_data;

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

	/* Set controls */
	snd_soc_add_codec_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 = cq93vc_platform_remove,
};

module_platform_driver(cq93vc_codec_driver);

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>
b56e972b MA	40
b56e972b MA	41	static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
	42	unsigned int reg)
	43	{
	44	struct davinci_vc *davinci_vc = codec->control_data;
	45
	46	return readl(davinci_vc->base + reg);
	47	}
	48
	49	static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
	50	unsigned int value)
	51	{
	52	struct davinci_vc *davinci_vc = codec->control_data;
	53
	54	writel(value, davinci_vc->base + reg);
	55
	56	return 0;
	57	}
	58
	59	static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
	60	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
	61	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
	62	};
	63
	64	static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
	65	{
	66	struct snd_soc_codec *codec = dai->codec;
	67	u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;
	68
	69	if (mute)
	70	cq93vc_write(codec, DAVINCI_VC_REG09,
	71	reg \| DAVINCI_VC_REG09_MUTE);
	72	else
	73	cq93vc_write(codec, DAVINCI_VC_REG09, reg);
	74
	75	return 0;
	76	}
	77
	78	static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	79	int clk_id, unsigned int freq, int dir)
	80	{
	81	struct snd_soc_codec *codec = codec_dai->codec;
	82	struct davinci_vc *davinci_vc = codec->control_data;
	83
	84	switch (freq) {
	85	case 22579200:
	86	case 27000000:
	87	case 33868800:
	88	davinci_vc->cq93vc.sysclk = freq;
	89	return 0;
	90	}
	91
	92	return -EINVAL;
	93	}
	94
	95	static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
	96	enum snd_soc_bias_level level)
	97	{
	98	switch (level) {
	99	case SND_SOC_BIAS_ON:
	100	cq93vc_write(codec, DAVINCI_VC_REG12,
	101	DAVINCI_VC_REG12_POWER_ALL_ON);
	102	break;
	103	case SND_SOC_BIAS_PREPARE:
	104	break;
105	case SND_SOC_BIAS_STANDBY:
106	cq93vc_write(codec, DAVINCI_VC_REG12,
107	DAVINCI_VC_REG12_POWER_ALL_OFF);
108	break;
109	case SND_SOC_BIAS_OFF:
110	/* force all power off */
111	cq93vc_write(codec, DAVINCI_VC_REG12,
112	DAVINCI_VC_REG12_POWER_ALL_OFF);
113	break;
114	}
ce6120cc	115	codec->dapm.bias_level = level;
b56e972b MA	116
	117	return 0;
	118	}
	119
	120	#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000)
	121	#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 \| SNDRV_PCM_FMTBIT_S16_LE)
	122
85e7652d	123	static const struct snd_soc_dai_ops cq93vc_dai_ops = {
b56e972b MA	124	.digital_mute = cq93vc_mute,
	125	.set_sysclk = cq93vc_set_dai_sysclk,
	126	};
	127
f0fba2ad LG	128	static struct snd_soc_dai_driver cq93vc_dai = {
f0fba2ad LG	129	.name = "cq93vc-hifi",
b56e972b MA	130	.playback = {
	131	.stream_name = "Playback",
	132	.channels_min = 1,
	133	.channels_max = 2,
	134	.rates = CQ93VC_RATES,
	135	.formats = CQ93VC_FORMATS,},
	136	.capture = {
	137	.stream_name = "Capture",
	138	.channels_min = 1,
	139	.channels_max = 2,
	140	.rates = CQ93VC_RATES,
	141	.formats = CQ93VC_FORMATS,},
	142	.ops = &cq93vc_dai_ops,
	143	};
b56e972b	144
f0fba2ad	145	static int cq93vc_resume(struct snd_soc_codec *codec)
b56e972b	146	{
29e189c2	147	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
b56e972b MA	148
	149	return 0;
	150	}
	151
f0fba2ad	152	static int cq93vc_probe(struct snd_soc_codec *codec)
b56e972b	153	{
cb5811cf	154	struct davinci_vc *davinci_vc = codec->dev->platform_data;
f0fba2ad LG	155
	156	davinci_vc->cq93vc.codec = codec;
	157	codec->control_data = davinci_vc;
b56e972b MA	158
b56e972b MA	159	/* Set controls */
022658be	160	snd_soc_add_codec_controls(codec, cq93vc_snd_controls,
b56e972b MA	161	ARRAY_SIZE(cq93vc_snd_controls));
	162
	163	/* Off, with power on */
	164	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	165
	166	return 0;
	167	}
	168
f0fba2ad	169	static int cq93vc_remove(struct snd_soc_codec *codec)
b56e972b	170	{
f0fba2ad	171	cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
b56e972b MA	172
	173	return 0;
	174	}
	175
f0fba2ad LG	176	static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
	177	.read = cq93vc_read,
	178	.write = cq93vc_write,
	179	.set_bias_level = cq93vc_set_bias_level,
b56e972b MA	180	.probe = cq93vc_probe,
	181	.remove = cq93vc_remove,
	182	.resume = cq93vc_resume,
	183	};
b56e972b	184
f0fba2ad	185	static int cq93vc_platform_probe(struct platform_device *pdev)
b56e972b	186	{
f0fba2ad LG	187	return snd_soc_register_codec(&pdev->dev,
f0fba2ad LG	188	&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
b56e972b MA	189	}
b56e972b MA	190
f0fba2ad	191	static int cq93vc_platform_remove(struct platform_device *pdev)
b56e972b	192	{
f0fba2ad	193	snd_soc_unregister_codec(&pdev->dev);
b56e972b MA	194	return 0;
	195	}
	196
	197	static struct platform_driver cq93vc_codec_driver = {
	198	.driver = {
f0fba2ad LG	199	.name = "cq93vc-codec",
	200	.owner = THIS_MODULE,
	201	},
	202
	203	.probe = cq93vc_platform_probe,
7a79e94e	204	.remove = cq93vc_platform_remove,
b56e972b MA	205	};
b56e972b MA	206
5bbcc3c0	207	module_platform_driver(cq93vc_codec_driver);
b56e972b MA	208
	209	MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
	210	MODULE_AUTHOR("Miguel Aguilar");
	211	MODULE_LICENSE("GPL");