[deliverable/linux.git] / sound / soc / codecs / ad1836.c

/*
 * File:         sound/soc/codecs/ad1836.c
 * Author:       Barry Song <Barry.Song@analog.com>
 *
 * Created:      Aug 04 2009
 * Description:  Driver for AD1836 sound chip
 *
 * Modified:
 *               Copyright 2009 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * 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.
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/spi/spi.h>
#include "ad1836.h"

/* codec private data */
struct ad1836_priv {
	enum snd_soc_control_type control_type;
	void *control_data;
};

/*
 * AD1836 volume/mute/de-emphasis etc. controls
 */
static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};

static const struct soc_enum ad1836_deemp_enum =
	SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);

#define AD1836_DAC_VOLUME(x) \
	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
			AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)

#define AD1836_DAC_SWITCH(x) \
	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
			AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)

#define AD1836_ADC_SWITCH(x) \
	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
		AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)

static const struct snd_kcontrol_new ad1836_snd_controls[] = {
	/* DAC volume control */
	AD1836_DAC_VOLUME(1),
	AD1836_DAC_VOLUME(2),
	AD1836_DAC_VOLUME(3),

	/* ADC switch control */
	AD1836_ADC_SWITCH(1),
	AD1836_ADC_SWITCH(2),

	/* DAC switch control */
	AD1836_DAC_SWITCH(1),
	AD1836_DAC_SWITCH(2),
	AD1836_DAC_SWITCH(3),

	/* ADC high-pass filter */
	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
			AD1836_ADC_HIGHPASS_FILTER, 1, 0),

	/* DAC de-emphasis */
	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
};

static const struct snd_soc_dapm_widget ad1836_dapm_widgets[] = {
	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
				AD1836_DAC_POWERDOWN, 1),
	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
				AD1836_ADC_POWERDOWN, 1, NULL, 0),
	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	SND_SOC_DAPM_INPUT("ADC1IN"),
	SND_SOC_DAPM_INPUT("ADC2IN"),
};

static const struct snd_soc_dapm_route audio_paths[] = {
	{ "DAC", NULL, "ADC_PWR" },
	{ "ADC", NULL, "ADC_PWR" },
	{ "DAC1OUT", "DAC1 Switch", "DAC" },
	{ "DAC2OUT", "DAC2 Switch", "DAC" },
	{ "DAC3OUT", "DAC3 Switch", "DAC" },
	{ "ADC", "ADC1 Switch", "ADC1IN" },
	{ "ADC", "ADC2 Switch", "ADC2IN" },
};

/*
 * DAI ops entries
 */

static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	/* at present, we support adc aux mode to interface with
	 * blackfin sport tdm mode
	 */
	case SND_SOC_DAIFMT_DSP_A:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_IB_IF:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	case SND_SOC_DAIFMT_CBM_CFM:
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int ad1836_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params,
		struct snd_soc_dai *dai)
{
	int word_len = 0;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;

	/* bit size */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		word_len = 3;
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		word_len = 1;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
	case SNDRV_PCM_FORMAT_S32_LE:
		word_len = 0;
		break;
	}

	snd_soc_update_bits(codec, AD1836_DAC_CTRL1,
		AD1836_DAC_WORD_LEN_MASK, word_len);

	snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_WORD_LEN_MASK, word_len);

	return 0;
}

#ifdef CONFIG_PM
static int ad1836_soc_suspend(struct snd_soc_codec *codec,
		pm_message_t state)
{
	/* reset clock control mode */
	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
	adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK;

	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
}

static int ad1836_soc_resume(struct snd_soc_codec *codec)
{
	/* restore clock control mode */
	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
	adc_ctrl2 |= AD1836_ADC_AUX;

	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
}
#else
#define ad1836_soc_suspend NULL
#define ad1836_soc_resume  NULL
#endif

static struct snd_soc_dai_ops ad1836_dai_ops = {
	.hw_params = ad1836_hw_params,
	.set_fmt = ad1836_set_dai_fmt,
};

/* codec DAI instance */
static struct snd_soc_dai_driver ad1836_dai = {
	.name = "ad1836-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 6,
		.rates = SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 4,
		.rates = SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
	},
	.ops = &ad1836_dai_ops,
};

static int ad1836_probe(struct snd_soc_codec *codec)
{
	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret = 0;

	codec->control_data = ad1836->control_data;
	ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
	if (ret < 0) {
		dev_err(codec->dev, "failed to set cache I/O: %d\n",
				ret);
		return ret;
	}

	/* default setting for ad1836 */
	/* de-emphasis: 48kHz, power-on dac */
	snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
	/* unmute dac channels */
	snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
	/* high-pass filter enable, power-on adc */
	snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
	/* unmute adc channles, adc aux mode */
	snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
	/* left/right diff:PGA/MUX */
	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
	/* volume */
	snd_soc_write(codec, AD1836_DAC_L_VOL(1), 0x3FF);
	snd_soc_write(codec, AD1836_DAC_R_VOL(1), 0x3FF);
	snd_soc_write(codec, AD1836_DAC_L_VOL(2), 0x3FF);
	snd_soc_write(codec, AD1836_DAC_R_VOL(2), 0x3FF);
	snd_soc_write(codec, AD1836_DAC_L_VOL(3), 0x3FF);
	snd_soc_write(codec, AD1836_DAC_R_VOL(3), 0x3FF);

	snd_soc_add_controls(codec, ad1836_snd_controls,
			     ARRAY_SIZE(ad1836_snd_controls));
	snd_soc_dapm_new_controls(dapm, ad1836_dapm_widgets,
				  ARRAY_SIZE(ad1836_dapm_widgets));
	snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));

	return ret;
}

/* power down chip */
static int ad1836_remove(struct snd_soc_codec *codec)
{
	/* reset clock control mode */
	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
	adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK;

	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
}

static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
	.probe = 	ad1836_probe,
	.remove = 	ad1836_remove,
	.suspend =      ad1836_soc_suspend,
	.resume =       ad1836_soc_resume,
	.reg_cache_size = AD1836_NUM_REGS,
	.reg_word_size = sizeof(u16),
};

static int __devinit ad1836_spi_probe(struct spi_device *spi)
{
	struct ad1836_priv *ad1836;
	int ret;

	ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
	if (ad1836 == NULL)
		return -ENOMEM;

	spi_set_drvdata(spi, ad1836);
	ad1836->control_data = spi;
	ad1836->control_type = SND_SOC_SPI;

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_ad1836, &ad1836_dai, 1);
	if (ret < 0)
		kfree(ad1836);
	return ret;
}

static int __devexit ad1836_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	kfree(spi_get_drvdata(spi));
	return 0;
}

static struct spi_driver ad1836_spi_driver = {
	.driver = {
		.name	= "ad1836-codec",
		.owner	= THIS_MODULE,
	},
	.probe		= ad1836_spi_probe,
	.remove		= __devexit_p(ad1836_spi_remove),
};

static int __init ad1836_init(void)
{
	int ret;

	ret = spi_register_driver(&ad1836_spi_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register ad1836 SPI driver: %d\n",
				ret);
	}

	return ret;
}
module_init(ad1836_init);

static void __exit ad1836_exit(void)
{
	spi_unregister_driver(&ad1836_spi_driver);
}
module_exit(ad1836_exit);

MODULE_DESCRIPTION("ASoC ad1836 driver");
MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
7eaae41e BS	1	/*
	2	* File: sound/soc/codecs/ad1836.c
	3	* Author: Barry Song <Barry.Song@analog.com>
	4	*
	5	* Created: Aug 04 2009
	6	* Description: Driver for AD1836 sound chip
	7	*
	8	* Modified:
	9	* Copyright 2009 Analog Devices Inc.
	10	*
	11	* Bugs: Enter bugs at http://blackfin.uclinux.org/
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*/
	18
	19	#include <linux/init.h>
5a0e3ad6	20	#include <linux/slab.h>
7eaae41e	21	#include <linux/module.h>
7eaae41e BS	22	#include <linux/kernel.h>
	23	#include <linux/device.h>
	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/pcm_params.h>
	27	#include <sound/initval.h>
	28	#include <sound/soc.h>
	29	#include <sound/tlv.h>
7eaae41e BS	30	#include <linux/spi/spi.h>
	31	#include "ad1836.h"
	32
	33	/* codec private data */
	34	struct ad1836_priv {
f0fba2ad LG	35	enum snd_soc_control_type control_type;
f0fba2ad LG	36	void *control_data;
7eaae41e BS	37	};
7eaae41e BS	38
7eaae41e BS	39	/*
	40	* AD1836 volume/mute/de-emphasis etc. controls
	41	*/
	42	static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
	43
	44	static const struct soc_enum ad1836_deemp_enum =
	45	SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
	46
90bc11d1 LPC	47	#define AD1836_DAC_VOLUME(x) \
	48	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
	49	AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
	50
	51	#define AD1836_DAC_SWITCH(x) \
	52	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
	53	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	54
	55	#define AD1836_ADC_SWITCH(x) \
	56	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
	57	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	58
7eaae41e BS	59	static const struct snd_kcontrol_new ad1836_snd_controls[] = {
7eaae41e BS	60	/* DAC volume control */
90bc11d1 LPC	61	AD1836_DAC_VOLUME(1),
	62	AD1836_DAC_VOLUME(2),
	63	AD1836_DAC_VOLUME(3),
7eaae41e BS	64
7eaae41e BS	65	/* ADC switch control */
90bc11d1 LPC	66	AD1836_ADC_SWITCH(1),
90bc11d1 LPC	67	AD1836_ADC_SWITCH(2),
7eaae41e BS	68
7eaae41e BS	69	/* DAC switch control */
90bc11d1 LPC	70	AD1836_DAC_SWITCH(1),
	71	AD1836_DAC_SWITCH(2),
	72	AD1836_DAC_SWITCH(3),
7eaae41e BS	73
	74	/* ADC high-pass filter */
	75	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
	76	AD1836_ADC_HIGHPASS_FILTER, 1, 0),
	77
	78	/* DAC de-emphasis */
	79	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
	80	};
	81
	82	static const struct snd_soc_dapm_widget ad1836_dapm_widgets[] = {
	83	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
	84	AD1836_DAC_POWERDOWN, 1),
	85	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	86	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
	87	AD1836_ADC_POWERDOWN, 1, NULL, 0),
	88	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	89	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	90	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	91	SND_SOC_DAPM_INPUT("ADC1IN"),
	92	SND_SOC_DAPM_INPUT("ADC2IN"),
	93	};
	94
	95	static const struct snd_soc_dapm_route audio_paths[] = {
	96	{ "DAC", NULL, "ADC_PWR" },
	97	{ "ADC", NULL, "ADC_PWR" },
	98	{ "DAC1OUT", "DAC1 Switch", "DAC" },
	99	{ "DAC2OUT", "DAC2 Switch", "DAC" },
	100	{ "DAC3OUT", "DAC3 Switch", "DAC" },
	101	{ "ADC", "ADC1 Switch", "ADC1IN" },
	102	{ "ADC", "ADC2 Switch", "ADC2IN" },
	103	};
	104
	105	/*
	106	* DAI ops entries
	107	*/
	108
	109	static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
	110	unsigned int fmt)
	111	{
	112	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	113	/* at present, we support adc aux mode to interface with
	114	* blackfin sport tdm mode
	115	*/
	116	case SND_SOC_DAIFMT_DSP_A:
	117	break;
	118	default:
	119	return -EINVAL;
	120	}
	121
	122	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	123	case SND_SOC_DAIFMT_IB_IF:
	124	break;
	125	default:
	126	return -EINVAL;
	127	}
	128
	129	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	130	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	131	case SND_SOC_DAIFMT_CBM_CFM:
	132	break;
	133	default:
	134	return -EINVAL;
	135	}
	136
137	return 0;
138	}
139
140	static int ad1836_hw_params(struct snd_pcm_substream *substream,
141	struct snd_pcm_hw_params *params,
142	struct snd_soc_dai *dai)
143	{
144	int word_len = 0;
145
146	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	147	struct snd_soc_codec *codec = rtd->codec;
7eaae41e BS	148
	149	/* bit size */
	150	switch (params_format(params)) {
	151	case SNDRV_PCM_FORMAT_S16_LE:
	152	word_len = 3;
	153	break;
	154	case SNDRV_PCM_FORMAT_S20_3LE:
	155	word_len = 1;
	156	break;
	157	case SNDRV_PCM_FORMAT_S24_LE:
	158	case SNDRV_PCM_FORMAT_S32_LE:
	159	word_len = 0;
	160	break;
	161	}
	162
	163	snd_soc_update_bits(codec, AD1836_DAC_CTRL1,
	164	AD1836_DAC_WORD_LEN_MASK, word_len);
	165
	166	snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
	167	AD1836_ADC_WORD_LEN_MASK, word_len);
	168
	169	return 0;
	170	}
	171
84549d23	172	#ifdef CONFIG_PM
f0fba2ad	173	static int ad1836_soc_suspend(struct snd_soc_codec *codec,
84549d23 BS	174	pm_message_t state)
84549d23 BS	175	{
84549d23	176	/* reset clock control mode */
63b62ab0	177	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
84549d23 BS	178	adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK;
84549d23 BS	179
63b62ab0	180	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
84549d23 BS	181	}
84549d23 BS	182
f0fba2ad	183	static int ad1836_soc_resume(struct snd_soc_codec *codec)
84549d23	184	{
84549d23	185	/* restore clock control mode */
63b62ab0	186	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
84549d23 BS	187	adc_ctrl2 \|= AD1836_ADC_AUX;
84549d23 BS	188
63b62ab0	189	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
84549d23 BS	190	}
	191	#else
	192	#define ad1836_soc_suspend NULL
	193	#define ad1836_soc_resume NULL
	194	#endif
	195
7eaae41e BS	196	static struct snd_soc_dai_ops ad1836_dai_ops = {
	197	.hw_params = ad1836_hw_params,
	198	.set_fmt = ad1836_set_dai_fmt,
	199	};
	200
	201	/* codec DAI instance */
f0fba2ad LG	202	static struct snd_soc_dai_driver ad1836_dai = {
f0fba2ad LG	203	.name = "ad1836-hifi",
7eaae41e BS	204	.playback = {
	205	.stream_name = "Playback",
	206	.channels_min = 2,
	207	.channels_max = 6,
	208	.rates = SNDRV_PCM_RATE_48000,
	209	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	210	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	211	},
	212	.capture = {
	213	.stream_name = "Capture",
	214	.channels_min = 2,
	215	.channels_max = 4,
	216	.rates = SNDRV_PCM_RATE_48000,
	217	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \|
	218	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE,
	219	},
	220	.ops = &ad1836_dai_ops,
	221	};
7eaae41e	222
f0fba2ad	223	static int ad1836_probe(struct snd_soc_codec *codec)
7eaae41e	224	{
f0fba2ad	225	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
ce6120cc	226	struct snd_soc_dapm_context *dapm = &codec->dapm;
f0fba2ad	227	int ret = 0;
7eaae41e	228
f0fba2ad	229	codec->control_data = ad1836->control_data;
63b62ab0 BS	230	ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
	231	if (ret < 0) {
	232	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	233	ret);
63b62ab0 BS	234	return ret;
	235	}
	236
7eaae41e BS	237	/* default setting for ad1836 */
7eaae41e BS	238	/* de-emphasis: 48kHz, power-on dac */
63b62ab0	239	snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
7eaae41e	240	/* unmute dac channels */
63b62ab0	241	snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
7eaae41e	242	/* high-pass filter enable, power-on adc */
63b62ab0	243	snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
7eaae41e	244	/* unmute adc channles, adc aux mode */
63b62ab0	245	snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
7eaae41e	246	/* left/right diff:PGA/MUX */
63b62ab0	247	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
7eaae41e	248	/* volume */
90bc11d1 LPC	249	snd_soc_write(codec, AD1836_DAC_L_VOL(1), 0x3FF);
	250	snd_soc_write(codec, AD1836_DAC_R_VOL(1), 0x3FF);
	251	snd_soc_write(codec, AD1836_DAC_L_VOL(2), 0x3FF);
	252	snd_soc_write(codec, AD1836_DAC_R_VOL(2), 0x3FF);
	253	snd_soc_write(codec, AD1836_DAC_L_VOL(3), 0x3FF);
	254	snd_soc_write(codec, AD1836_DAC_R_VOL(3), 0x3FF);
7eaae41e	255
7eaae41e BS	256	snd_soc_add_controls(codec, ad1836_snd_controls,
7eaae41e BS	257	ARRAY_SIZE(ad1836_snd_controls));
ce6120cc	258	snd_soc_dapm_new_controls(dapm, ad1836_dapm_widgets,
7eaae41e	259	ARRAY_SIZE(ad1836_dapm_widgets));
ce6120cc	260	snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
7eaae41e	261
7eaae41e BS	262	return ret;
	263	}
	264
	265	/* power down chip */
f0fba2ad	266	static int ad1836_remove(struct snd_soc_codec *codec)
7eaae41e	267	{
f0fba2ad LG	268	/* reset clock control mode */
	269	u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
	270	adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK;
7eaae41e	271
f0fba2ad	272	return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
7eaae41e BS	273	}
7eaae41e BS	274
f0fba2ad	275	static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
7eaae41e BS	276	.probe = ad1836_probe,
7eaae41e BS	277	.remove = ad1836_remove,
84549d23 BS	278	.suspend = ad1836_soc_suspend,
84549d23 BS	279	.resume = ad1836_soc_resume,
f0fba2ad LG	280	.reg_cache_size = AD1836_NUM_REGS,
	281	.reg_word_size = sizeof(u16),
	282	};
	283
	284	static int __devinit ad1836_spi_probe(struct spi_device *spi)
	285	{
	286	struct ad1836_priv *ad1836;
	287	int ret;
	288
	289	ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
	290	if (ad1836 == NULL)
	291	return -ENOMEM;
	292
	293	spi_set_drvdata(spi, ad1836);
	294	ad1836->control_data = spi;
	295	ad1836->control_type = SND_SOC_SPI;
	296
	297	ret = snd_soc_register_codec(&spi->dev,
	298	&soc_codec_dev_ad1836, &ad1836_dai, 1);
	299	if (ret < 0)
	300	kfree(ad1836);
	301	return ret;
	302	}
	303
	304	static int __devexit ad1836_spi_remove(struct spi_device *spi)
	305	{
	306	snd_soc_unregister_codec(&spi->dev);
	307	kfree(spi_get_drvdata(spi));
	308	return 0;
	309	}
	310
	311	static struct spi_driver ad1836_spi_driver = {
	312	.driver = {
	313	.name = "ad1836-codec",
	314	.owner = THIS_MODULE,
	315	},
	316	.probe = ad1836_spi_probe,
	317	.remove = __devexit_p(ad1836_spi_remove),
7eaae41e	318	};
7eaae41e BS	319
	320	static int __init ad1836_init(void)
	321	{
	322	int ret;
	323
	324	ret = spi_register_driver(&ad1836_spi_driver);
	325	if (ret != 0) {
	326	printk(KERN_ERR "Failed to register ad1836 SPI driver: %d\n",
	327	ret);
	328	}
	329
	330	return ret;
	331	}
	332	module_init(ad1836_init);
	333
	334	static void __exit ad1836_exit(void)
	335	{
	336	spi_unregister_driver(&ad1836_spi_driver);
	337	}
	338	module_exit(ad1836_exit);
	339
	340	MODULE_DESCRIPTION("ASoC ad1836 driver");
	341	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
	342	MODULE_LICENSE("GPL");