[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>

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;

	if (mute)
		reg = DAVINCI_VC_REG09_MUTE;
	else
		reg = 0;

	snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
			    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->dev->platform_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:
		snd_soc_write(codec, DAVINCI_VC_REG12,
			     DAVINCI_VC_REG12_POWER_ALL_ON);
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		snd_soc_write(codec, DAVINCI_VC_REG12,
			     DAVINCI_VC_REG12_POWER_ALL_OFF);
		break;
	case SND_SOC_BIAS_OFF:
		/* force all power off */
		snd_soc_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;

	snd_soc_codec_set_cache_io(codec, davinci_vc->regmap);

	/* 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 = {
	.set_bias_level = cq93vc_set_bias_level,
	.probe = cq93vc_probe,
	.remove = cq93vc_remove,
	.resume = cq93vc_resume,
	.controls = cq93vc_snd_controls,
	.num_controls = ARRAY_SIZE(cq93vc_snd_controls),
};

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 const struct snd_kcontrol_new cq93vc_snd_controls[] = {
	42	SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
	43	SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
	44	};
	45
	46	static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
	47	{
	48	struct snd_soc_codec *codec = dai->codec;
1201939a	49	u8 reg;
b56e972b MA	50
b56e972b MA	51	if (mute)
1201939a	52	reg = DAVINCI_VC_REG09_MUTE;
b56e972b	53	else
1201939a MB	54	reg = 0;
	55
	56	snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
	57	reg);
b56e972b MA	58
	59	return 0;
	60	}
	61
	62	static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	63	int clk_id, unsigned int freq, int dir)
	64	{
	65	struct snd_soc_codec *codec = codec_dai->codec;
8ecb5344	66	struct davinci_vc *davinci_vc = codec->dev->platform_data;
b56e972b MA	67
	68	switch (freq) {
	69	case 22579200:
	70	case 27000000:
	71	case 33868800:
	72	davinci_vc->cq93vc.sysclk = freq;
	73	return 0;
	74	}
	75
	76	return -EINVAL;
	77	}
	78
	79	static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
	80	enum snd_soc_bias_level level)
	81	{
	82	switch (level) {
	83	case SND_SOC_BIAS_ON:
1201939a	84	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	85	DAVINCI_VC_REG12_POWER_ALL_ON);
	86	break;
	87	case SND_SOC_BIAS_PREPARE:
	88	break;
	89	case SND_SOC_BIAS_STANDBY:
1201939a	90	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	91	DAVINCI_VC_REG12_POWER_ALL_OFF);
	92	break;
	93	case SND_SOC_BIAS_OFF:
	94	/* force all power off */
1201939a	95	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	96	DAVINCI_VC_REG12_POWER_ALL_OFF);
	97	break;
	98	}
ce6120cc	99	codec->dapm.bias_level = level;
b56e972b MA	100
	101	return 0;
	102	}
	103
	104	#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000)
	105	#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 \| SNDRV_PCM_FMTBIT_S16_LE)
	106
85e7652d	107	static const struct snd_soc_dai_ops cq93vc_dai_ops = {
b56e972b MA	108	.digital_mute = cq93vc_mute,
	109	.set_sysclk = cq93vc_set_dai_sysclk,
	110	};
	111
f0fba2ad LG	112	static struct snd_soc_dai_driver cq93vc_dai = {
f0fba2ad LG	113	.name = "cq93vc-hifi",
b56e972b MA	114	.playback = {
	115	.stream_name = "Playback",
	116	.channels_min = 1,
	117	.channels_max = 2,
	118	.rates = CQ93VC_RATES,
	119	.formats = CQ93VC_FORMATS,},
	120	.capture = {
	121	.stream_name = "Capture",
	122	.channels_min = 1,
	123	.channels_max = 2,
	124	.rates = CQ93VC_RATES,
	125	.formats = CQ93VC_FORMATS,},
	126	.ops = &cq93vc_dai_ops,
	127	};
b56e972b	128
f0fba2ad	129	static int cq93vc_resume(struct snd_soc_codec *codec)
b56e972b	130	{
29e189c2	131	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
b56e972b MA	132
	133	return 0;
	134	}
	135
f0fba2ad	136	static int cq93vc_probe(struct snd_soc_codec *codec)
b56e972b	137	{
cb5811cf	138	struct davinci_vc *davinci_vc = codec->dev->platform_data;
f0fba2ad LG	139
f0fba2ad LG	140	davinci_vc->cq93vc.codec = codec;
d33c3335	141
092eba93	142	snd_soc_codec_set_cache_io(codec, davinci_vc->regmap);
b56e972b	143
b56e972b MA	144	/* Off, with power on */
	145	cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	146
	147	return 0;
	148	}
	149
f0fba2ad	150	static int cq93vc_remove(struct snd_soc_codec *codec)
b56e972b	151	{
f0fba2ad	152	cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
b56e972b MA	153
	154	return 0;
	155	}
	156
f0fba2ad	157	static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
f0fba2ad	158	.set_bias_level = cq93vc_set_bias_level,
b56e972b MA	159	.probe = cq93vc_probe,
	160	.remove = cq93vc_remove,
	161	.resume = cq93vc_resume,
6f88063c MB	162	.controls = cq93vc_snd_controls,
6f88063c MB	163	.num_controls = ARRAY_SIZE(cq93vc_snd_controls),
b56e972b	164	};
b56e972b	165
f0fba2ad	166	static int cq93vc_platform_probe(struct platform_device *pdev)
b56e972b	167	{
f0fba2ad LG	168	return snd_soc_register_codec(&pdev->dev,
f0fba2ad LG	169	&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
b56e972b MA	170	}
b56e972b MA	171
f0fba2ad	172	static int cq93vc_platform_remove(struct platform_device *pdev)
b56e972b	173	{
f0fba2ad	174	snd_soc_unregister_codec(&pdev->dev);
b56e972b MA	175	return 0;
	176	}
	177
	178	static struct platform_driver cq93vc_codec_driver = {
	179	.driver = {
f0fba2ad LG	180	.name = "cq93vc-codec",
	181	.owner = THIS_MODULE,
	182	},
	183
	184	.probe = cq93vc_platform_probe,
7a79e94e	185	.remove = cq93vc_platform_remove,
b56e972b MA	186	};
b56e972b MA	187
5bbcc3c0	188	module_platform_driver(cq93vc_codec_driver);
b56e972b MA	189
	190	MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
	191	MODULE_AUTHOR("Miguel Aguilar");
	192	MODULE_LICENSE("GPL");