[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)
{
	switch (freq) {
	case 22579200:
	case 27000000:
	case 33868800:
		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;
	}

	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 struct regmap *cq93vc_get_regmap(struct device *dev)
{
	struct davinci_vc *davinci_vc = dev->platform_data;

	return davinci_vc->regmap;
}

static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
	.set_bias_level = cq93vc_set_bias_level,
	.get_regmap = cq93vc_get_regmap,
	.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",
	},

	.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	{
b56e972b MA	65	switch (freq) {
	66	case 22579200:
	67	case 27000000:
	68	case 33868800:
b56e972b MA	69	return 0;
	70	}
	71
	72	return -EINVAL;
	73	}
	74
	75	static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
	76	enum snd_soc_bias_level level)
	77	{
	78	switch (level) {
	79	case SND_SOC_BIAS_ON:
1201939a	80	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	81	DAVINCI_VC_REG12_POWER_ALL_ON);
	82	break;
	83	case SND_SOC_BIAS_PREPARE:
	84	break;
	85	case SND_SOC_BIAS_STANDBY:
1201939a	86	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	87	DAVINCI_VC_REG12_POWER_ALL_OFF);
	88	break;
	89	case SND_SOC_BIAS_OFF:
	90	/* force all power off */
1201939a	91	snd_soc_write(codec, DAVINCI_VC_REG12,
b56e972b MA	92	DAVINCI_VC_REG12_POWER_ALL_OFF);
	93	break;
	94	}
b56e972b MA	95
	96	return 0;
	97	}
	98
	99	#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000)
	100	#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 \| SNDRV_PCM_FMTBIT_S16_LE)
	101
85e7652d	102	static const struct snd_soc_dai_ops cq93vc_dai_ops = {
b56e972b MA	103	.digital_mute = cq93vc_mute,
	104	.set_sysclk = cq93vc_set_dai_sysclk,
	105	};
	106
f0fba2ad LG	107	static struct snd_soc_dai_driver cq93vc_dai = {
f0fba2ad LG	108	.name = "cq93vc-hifi",
b56e972b MA	109	.playback = {
	110	.stream_name = "Playback",
	111	.channels_min = 1,
	112	.channels_max = 2,
	113	.rates = CQ93VC_RATES,
	114	.formats = CQ93VC_FORMATS,},
	115	.capture = {
	116	.stream_name = "Capture",
	117	.channels_min = 1,
	118	.channels_max = 2,
	119	.rates = CQ93VC_RATES,
	120	.formats = CQ93VC_FORMATS,},
	121	.ops = &cq93vc_dai_ops,
	122	};
b56e972b	123
7a34b1c1	124	static struct regmap cq93vc_get_regmap(struct device dev)
49101a25	125	{
a8784dd0	126	struct davinci_vc *davinci_vc = dev->platform_data;
49101a25 XL	127
	128	return davinci_vc->regmap;
	129	}
	130
f0fba2ad	131	static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
f0fba2ad	132	.set_bias_level = cq93vc_set_bias_level,
49101a25	133	.get_regmap = cq93vc_get_regmap,
6f88063c MB	134	.controls = cq93vc_snd_controls,
6f88063c MB	135	.num_controls = ARRAY_SIZE(cq93vc_snd_controls),
b56e972b	136	};
b56e972b	137
f0fba2ad	138	static int cq93vc_platform_probe(struct platform_device *pdev)
b56e972b	139	{
f0fba2ad LG	140	return snd_soc_register_codec(&pdev->dev,
f0fba2ad LG	141	&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
b56e972b MA	142	}
b56e972b MA	143
f0fba2ad	144	static int cq93vc_platform_remove(struct platform_device *pdev)
b56e972b	145	{
f0fba2ad	146	snd_soc_unregister_codec(&pdev->dev);
b56e972b MA	147	return 0;
	148	}
	149
	150	static struct platform_driver cq93vc_codec_driver = {
	151	.driver = {
f0fba2ad	152	.name = "cq93vc-codec",
f0fba2ad LG	153	},
	154
	155	.probe = cq93vc_platform_probe,
7a79e94e	156	.remove = cq93vc_platform_remove,
b56e972b MA	157	};
b56e972b MA	158
5bbcc3c0	159	module_platform_driver(cq93vc_codec_driver);
b56e972b MA	160
	161	MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
	162	MODULE_AUTHOR("Miguel Aguilar");
	163	MODULE_LICENSE("GPL");