[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"

enum ad1836_type {
	AD1835,
	AD1836,
	AD1838,
};

/* codec private data */
struct ad1836_priv {
	enum snd_soc_control_type control_type;
	void *control_data;
	enum ad1836_type type;
};

/*
 * 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 ad183x_dac_controls[] = {
	AD1836_DAC_VOLUME(1),
	AD1836_DAC_SWITCH(1),
	AD1836_DAC_VOLUME(2),
	AD1836_DAC_SWITCH(2),
	AD1836_DAC_VOLUME(3),
	AD1836_DAC_SWITCH(3),
	AD1836_DAC_VOLUME(4),
	AD1836_DAC_SWITCH(4),
};

static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
};

static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
	{ "DAC1OUT", NULL, "DAC" },
	{ "DAC2OUT", NULL, "DAC" },
	{ "DAC3OUT", NULL, "DAC" },
	{ "DAC4OUT", NULL, "DAC" },
};

static const struct snd_kcontrol_new ad183x_adc_controls[] = {
	AD1836_ADC_SWITCH(1),
	AD1836_ADC_SWITCH(2),
	AD1836_ADC_SWITCH(3),
};

static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("ADC1IN"),
	SND_SOC_DAPM_INPUT("ADC2IN"),
};

static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
	{ "ADC", NULL, "ADC1IN" },
	{ "ADC", NULL, "ADC2IN" },
};

static const struct snd_kcontrol_new ad183x_controls[] = {
	/* 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 ad183x_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),
};

static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
	{ "DAC", NULL, "ADC_PWR" },
	{ "ADC", NULL, "ADC_PWR" },
};

/*
 * 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 */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, 0);
}

static int ad1836_soc_resume(struct snd_soc_codec *codec)
{
	/* restore clock control mode */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
}
#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,
};

#define AD183X_DAI(_name, num_dacs, num_adcs) \
{ \
	.name = _name "-hifi", \
	.playback = { \
		.stream_name = "Playback", \
		.channels_min = 2, \
		.channels_max = (num_dacs) * 2, \
		.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 = (num_adcs) * 2, \
		.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 struct snd_soc_dai_driver ad183x_dais[] = {
	[AD1835] = AD183X_DAI("ad1835", 4, 1),
	[AD1836] = AD183X_DAI("ad1836", 3, 2),
	[AD1838] = AD183X_DAI("ad1838", 3, 1),
};

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 num_dacs, num_adcs;
	int ret = 0;
	int i;

	num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
	num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;

	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);
	/* volume */
	for (i = 1; i <= num_dacs; ++i) {
		snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
		snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
	}

	if (ad1836->type == AD1836) {
		/* left/right diff:PGA/MUX */
		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
	} else {
		snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
	}

	ret = snd_soc_add_controls(codec, ad183x_dac_controls, num_dacs * 2);
	if (ret)
		return ret;

	ret = snd_soc_add_controls(codec, ad183x_adc_controls, num_adcs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
	if (ret)
		return ret;

	ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
	if (ret)
		return ret;

	return ret;
}

/* power down chip */
static int ad1836_remove(struct snd_soc_codec *codec)
{
	/* reset clock control mode */
	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
		AD1836_ADC_SERFMT_MASK, 0);
}

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),

	.controls = ad183x_controls,
	.num_controls = ARRAY_SIZE(ad183x_controls),
	.dapm_widgets = ad183x_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
	.dapm_routes = ad183x_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
};

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;

	ad1836->type = spi_get_device_id(spi)->driver_data;

	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, &ad183x_dais[ad1836->type], 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 const struct spi_device_id ad1836_ids[] = {
	{ "ad1835", AD1835 },
	{ "ad1836", AD1836 },
	{ "ad1837", AD1835 },
	{ "ad1838", AD1838 },
	{ "ad1839", AD1838 },
	{ },
};
MODULE_DEVICE_TABLE(spi, ad1836_ids);

static struct spi_driver ad1836_spi_driver = {
	.driver = {
		.name	= "ad1836-codec",
		.owner	= THIS_MODULE,
	},
	.probe		= ad1836_spi_probe,
	.remove		= __devexit_p(ad1836_spi_remove),
	.id_table	= ad1836_ids,
};

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
874ce77b LPC	33	enum ad1836_type {
	34	AD1835,
	35	AD1836,
	36	AD1838,
	37	};
	38
7eaae41e BS	39	/* codec private data */
7eaae41e BS	40	struct ad1836_priv {
f0fba2ad LG	41	enum snd_soc_control_type control_type;
f0fba2ad LG	42	void *control_data;
874ce77b	43	enum ad1836_type type;
7eaae41e BS	44	};
7eaae41e BS	45
7eaae41e BS	46	/*
	47	* AD1836 volume/mute/de-emphasis etc. controls
	48	*/
	49	static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
	50
	51	static const struct soc_enum ad1836_deemp_enum =
	52	SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
	53
90bc11d1 LPC	54	#define AD1836_DAC_VOLUME(x) \
	55	SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
	56	AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
	57
	58	#define AD1836_DAC_SWITCH(x) \
	59	SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
	60	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	61
	62	#define AD1836_ADC_SWITCH(x) \
	63	SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
	64	AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
	65
874ce77b	66	static const struct snd_kcontrol_new ad183x_dac_controls[] = {
90bc11d1	67	AD1836_DAC_VOLUME(1),
874ce77b	68	AD1836_DAC_SWITCH(1),
90bc11d1	69	AD1836_DAC_VOLUME(2),
874ce77b	70	AD1836_DAC_SWITCH(2),
90bc11d1	71	AD1836_DAC_VOLUME(3),
874ce77b LPC	72	AD1836_DAC_SWITCH(3),
	73	AD1836_DAC_VOLUME(4),
	74	AD1836_DAC_SWITCH(4),
	75	};
	76
	77	static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
	78	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
	79	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
	80	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
	81	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
	82	};
	83
	84	static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
	85	{ "DAC1OUT", NULL, "DAC" },
	86	{ "DAC2OUT", NULL, "DAC" },
	87	{ "DAC3OUT", NULL, "DAC" },
	88	{ "DAC4OUT", NULL, "DAC" },
	89	};
7eaae41e	90
874ce77b	91	static const struct snd_kcontrol_new ad183x_adc_controls[] = {
90bc11d1 LPC	92	AD1836_ADC_SWITCH(1),
90bc11d1 LPC	93	AD1836_ADC_SWITCH(2),
874ce77b LPC	94	AD1836_ADC_SWITCH(3),
874ce77b LPC	95	};
7eaae41e	96
874ce77b LPC	97	static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
	98	SND_SOC_DAPM_INPUT("ADC1IN"),
	99	SND_SOC_DAPM_INPUT("ADC2IN"),
	100	};
	101
	102	static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
	103	{ "ADC", NULL, "ADC1IN" },
	104	{ "ADC", NULL, "ADC2IN" },
	105	};
7eaae41e	106
874ce77b	107	static const struct snd_kcontrol_new ad183x_controls[] = {
7eaae41e BS	108	/* ADC high-pass filter */
	109	SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
	110	AD1836_ADC_HIGHPASS_FILTER, 1, 0),
	111
	112	/* DAC de-emphasis */
	113	SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
	114	};
	115
874ce77b	116	static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
7eaae41e BS	117	SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
	118	AD1836_DAC_POWERDOWN, 1),
	119	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
	120	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
	121	AD1836_ADC_POWERDOWN, 1, NULL, 0),
7eaae41e BS	122	};
7eaae41e BS	123
874ce77b	124	static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
7eaae41e BS	125	{ "DAC", NULL, "ADC_PWR" },
7eaae41e BS	126	{ "ADC", NULL, "ADC_PWR" },
7eaae41e BS	127	};
	128
	129	/*
	130	* DAI ops entries
	131	*/
	132
	133	static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
	134	unsigned int fmt)
	135	{
	136	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	137	/* at present, we support adc aux mode to interface with
	138	* blackfin sport tdm mode
	139	*/
	140	case SND_SOC_DAIFMT_DSP_A:
	141	break;
	142	default:
	143	return -EINVAL;
	144	}
	145
	146	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	147	case SND_SOC_DAIFMT_IB_IF:
	148	break;
	149	default:
	150	return -EINVAL;
	151	}
	152
	153	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	154	/* ALCLK,ABCLK are both output, AD1836 can only be master */
	155	case SND_SOC_DAIFMT_CBM_CFM:
	156	break;
	157	default:
	158	return -EINVAL;
	159	}
	160
	161	return 0;
	162	}
	163
	164	static int ad1836_hw_params(struct snd_pcm_substream *substream,
	165	struct snd_pcm_hw_params *params,
	166	struct snd_soc_dai *dai)
	167	{
	168	int word_len = 0;
	169
	170	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	171	struct snd_soc_codec *codec = rtd->codec;
7eaae41e BS	172
	173	/* bit size */
	174	switch (params_format(params)) {
	175	case SNDRV_PCM_FORMAT_S16_LE:
	176	word_len = 3;
	177	break;
	178	case SNDRV_PCM_FORMAT_S20_3LE:
	179	word_len = 1;
	180	break;
	181	case SNDRV_PCM_FORMAT_S24_LE:
	182	case SNDRV_PCM_FORMAT_S32_LE:
	183	word_len = 0;
	184	break;
	185	}
	186
	187	snd_soc_update_bits(codec, AD1836_DAC_CTRL1,
	188	AD1836_DAC_WORD_LEN_MASK, word_len);
	189
	190	snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
	191	AD1836_ADC_WORD_LEN_MASK, word_len);
	192
	193	return 0;
	194	}
	195
84549d23	196	#ifdef CONFIG_PM
f0fba2ad	197	static int ad1836_soc_suspend(struct snd_soc_codec *codec,
84549d23 BS	198	pm_message_t state)
84549d23 BS	199	{
84549d23	200	/* reset clock control mode */
2cf03428 LPC	201	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
2cf03428 LPC	202	AD1836_ADC_SERFMT_MASK, 0);
84549d23 BS	203	}
84549d23 BS	204
f0fba2ad	205	static int ad1836_soc_resume(struct snd_soc_codec *codec)
84549d23	206	{
84549d23	207	/* restore clock control mode */
2cf03428 LPC	208	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
2cf03428 LPC	209	AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
84549d23 BS	210	}
	211	#else
	212	#define ad1836_soc_suspend NULL
	213	#define ad1836_soc_resume NULL
	214	#endif
	215
7eaae41e BS	216	static struct snd_soc_dai_ops ad1836_dai_ops = {
	217	.hw_params = ad1836_hw_params,
	218	.set_fmt = ad1836_set_dai_fmt,
	219	};
	220
874ce77b LPC	221	#define AD183X_DAI(_name, num_dacs, num_adcs) \
	222	{ \
	223	.name = _name "-hifi", \
	224	.playback = { \
	225	.stream_name = "Playback", \
	226	.channels_min = 2, \
	227	.channels_max = (num_dacs) * 2, \
	228	.rates = SNDRV_PCM_RATE_48000, \
	229	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	230	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	231	}, \
	232	.capture = { \
	233	.stream_name = "Capture", \
	234	.channels_min = 2, \
	235	.channels_max = (num_adcs) * 2, \
	236	.rates = SNDRV_PCM_RATE_48000, \
	237	.formats = SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S16_LE \| \
	238	SNDRV_PCM_FMTBIT_S20_3LE \| SNDRV_PCM_FMTBIT_S24_LE, \
	239	}, \
	240	.ops = &ad1836_dai_ops, \
	241	}
	242
	243	static struct snd_soc_dai_driver ad183x_dais[] = {
	244	[AD1835] = AD183X_DAI("ad1835", 4, 1),
	245	[AD1836] = AD183X_DAI("ad1836", 3, 2),
	246	[AD1838] = AD183X_DAI("ad1838", 3, 1),
7eaae41e	247	};
7eaae41e	248
f0fba2ad	249	static int ad1836_probe(struct snd_soc_codec *codec)
7eaae41e	250	{
f0fba2ad	251	struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
ce6120cc	252	struct snd_soc_dapm_context *dapm = &codec->dapm;
874ce77b	253	int num_dacs, num_adcs;
f0fba2ad	254	int ret = 0;
874ce77b LPC	255	int i;
	256
	257	num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
	258	num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
7eaae41e	259
f0fba2ad	260	codec->control_data = ad1836->control_data;
63b62ab0 BS	261	ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
	262	if (ret < 0) {
	263	dev_err(codec->dev, "failed to set cache I/O: %d\n",
	264	ret);
63b62ab0 BS	265	return ret;
	266	}
	267
7eaae41e BS	268	/* default setting for ad1836 */
7eaae41e BS	269	/* de-emphasis: 48kHz, power-on dac */
63b62ab0	270	snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
7eaae41e	271	/* unmute dac channels */
63b62ab0	272	snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
7eaae41e	273	/* high-pass filter enable, power-on adc */
63b62ab0	274	snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
7eaae41e	275	/* unmute adc channles, adc aux mode */
63b62ab0	276	snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
7eaae41e	277	/* volume */
874ce77b LPC	278	for (i = 1; i <= num_dacs; ++i) {
	279	snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
	280	snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
	281	}
	282
	283	if (ad1836->type == AD1836) {
	284	/* left/right diff:PGA/MUX */
	285	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
	286	} else {
	287	snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
	288	}
	289
	290	ret = snd_soc_add_controls(codec, ad183x_dac_controls, num_dacs * 2);
	291	if (ret)
	292	return ret;
	293
	294	ret = snd_soc_add_controls(codec, ad183x_adc_controls, num_adcs);
	295	if (ret)
	296	return ret;
	297
	298	ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
	299	if (ret)
	300	return ret;
	301
	302	ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
	303	if (ret)
	304	return ret;
	305
	306	ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
	307	if (ret)
	308	return ret;
	309
	310	ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
	311	if (ret)
	312	return ret;
7eaae41e	313
7eaae41e BS	314	return ret;
	315	}
	316
	317	/* power down chip */
f0fba2ad	318	static int ad1836_remove(struct snd_soc_codec *codec)
7eaae41e	319	{
f0fba2ad	320	/* reset clock control mode */
2cf03428 LPC	321	return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
2cf03428 LPC	322	AD1836_ADC_SERFMT_MASK, 0);
7eaae41e BS	323	}
7eaae41e BS	324
f0fba2ad	325	static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
7eaae41e BS	326	.probe = ad1836_probe,
7eaae41e BS	327	.remove = ad1836_remove,
84549d23 BS	328	.suspend = ad1836_soc_suspend,
84549d23 BS	329	.resume = ad1836_soc_resume,
f0fba2ad LG	330	.reg_cache_size = AD1836_NUM_REGS,
f0fba2ad LG	331	.reg_word_size = sizeof(u16),
874ce77b LPC	332
	333	.controls = ad183x_controls,
	334	.num_controls = ARRAY_SIZE(ad183x_controls),
	335	.dapm_widgets = ad183x_dapm_widgets,
	336	.num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
	337	.dapm_routes = ad183x_dapm_routes,
	338	.num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
f0fba2ad LG	339	};
	340
	341	static int __devinit ad1836_spi_probe(struct spi_device *spi)
	342	{
	343	struct ad1836_priv *ad1836;
	344	int ret;
	345
	346	ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
	347	if (ad1836 == NULL)
	348	return -ENOMEM;
	349
874ce77b LPC	350	ad1836->type = spi_get_device_id(spi)->driver_data;
874ce77b LPC	351
f0fba2ad LG	352	spi_set_drvdata(spi, ad1836);
	353	ad1836->control_data = spi;
	354	ad1836->control_type = SND_SOC_SPI;
	355
	356	ret = snd_soc_register_codec(&spi->dev,
874ce77b	357	&soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
f0fba2ad LG	358	if (ret < 0)
	359	kfree(ad1836);
	360	return ret;
	361	}
	362
	363	static int __devexit ad1836_spi_remove(struct spi_device *spi)
	364	{
	365	snd_soc_unregister_codec(&spi->dev);
	366	kfree(spi_get_drvdata(spi));
	367	return 0;
	368	}
874ce77b LPC	369	static const struct spi_device_id ad1836_ids[] = {
	370	{ "ad1835", AD1835 },
	371	{ "ad1836", AD1836 },
	372	{ "ad1837", AD1835 },
	373	{ "ad1838", AD1838 },
	374	{ "ad1839", AD1838 },
	375	{ },
	376	};
	377	MODULE_DEVICE_TABLE(spi, ad1836_ids);
f0fba2ad LG	378
	379	static struct spi_driver ad1836_spi_driver = {
	380	.driver = {
	381	.name = "ad1836-codec",
	382	.owner = THIS_MODULE,
	383	},
	384	.probe = ad1836_spi_probe,
	385	.remove = __devexit_p(ad1836_spi_remove),
874ce77b	386	.id_table = ad1836_ids,
7eaae41e	387	};
7eaae41e BS	388
	389	static int __init ad1836_init(void)
	390	{
	391	int ret;
	392
	393	ret = spi_register_driver(&ad1836_spi_driver);
	394	if (ret != 0) {
	395	printk(KERN_ERR "Failed to register ad1836 SPI driver: %d\n",
	396	ret);
	397	}
	398
	399	return ret;
	400	}
	401	module_init(ad1836_init);
	402
	403	static void __exit ad1836_exit(void)
	404	{
	405	spi_unregister_driver(&ad1836_spi_driver);
	406	}
	407	module_exit(ad1836_exit);
	408
	409	MODULE_DESCRIPTION("ASoC ad1836 driver");
	410	MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
	411	MODULE_LICENSE("GPL");