[deliverable/linux.git] / sound / soc / codecs / wm8728.c

/*
 * wm8728.c  --  WM8728 ALSA SoC Audio driver
 *
 * Copyright 2008 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "wm8728.h"

/*
 * We can't read the WM8728 register space so we cache them instead.
 * Note that the defaults here aren't the physical defaults, we latch
 * the volume update bits, mute the output and enable infinite zero
 * detect.
 */
static const struct reg_default wm8728_reg_defaults[] = {
	{ 0, 0x1ff },
	{ 1, 0x1ff },
	{ 2, 0x001 },
	{ 3, 0x100 },
};

/* codec private data */
struct wm8728_priv {
	struct regmap *regmap;
};

static const DECLARE_TLV_DB_SCALE(wm8728_tlv, -12750, 50, 1);

static const struct snd_kcontrol_new wm8728_snd_controls[] = {

SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8728_DACLVOL, WM8728_DACRVOL,
		 0, 255, 0, wm8728_tlv),

SOC_SINGLE("Deemphasis", WM8728_DACCTL, 1, 1, 0),
};

/*
 * DAPM controls.
 */
static const struct snd_soc_dapm_widget wm8728_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};

static const struct snd_soc_dapm_route wm8728_intercon[] = {
	{"VOUTL", NULL, "DAC"},
	{"VOUTR", NULL, "DAC"},
};

static int wm8728_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u16 mute_reg = snd_soc_read(codec, WM8728_DACCTL);

	if (mute)
		snd_soc_write(codec, WM8728_DACCTL, mute_reg | 1);
	else
		snd_soc_write(codec, WM8728_DACCTL, mute_reg & ~1);

	return 0;
}

static int wm8728_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	u16 dac = snd_soc_read(codec, WM8728_DACCTL);

	dac &= ~0x18;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		dac |= 0x10;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		dac |= 0x08;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_write(codec, WM8728_DACCTL, dac);

	return 0;
}

static int wm8728_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u16 iface = snd_soc_read(codec, WM8728_IFCTL);

	/* Currently only I2S is supported by the driver, though the
	 * hardware is more flexible.
	 */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		iface |= 1;
		break;
	default:
		return -EINVAL;
	}

	/* The hardware only support full slave mode */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		iface &= ~0x22;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		iface |=  0x20;
		iface &= ~0x02;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		iface |= 0x02;
		iface &= ~0x20;
		break;
	case SND_SOC_DAIFMT_IB_IF:
		iface |= 0x22;
		break;
	default:
		return -EINVAL;
	}

	snd_soc_write(codec, WM8728_IFCTL, iface);
	return 0;
}

static int wm8728_set_bias_level(struct snd_soc_codec *codec,
				 enum snd_soc_bias_level level)
{
	struct wm8728_priv *wm8728 = snd_soc_codec_get_drvdata(codec);
	u16 reg;

	switch (level) {
	case SND_SOC_BIAS_ON:
	case SND_SOC_BIAS_PREPARE:
	case SND_SOC_BIAS_STANDBY:
		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
			/* Power everything up... */
			reg = snd_soc_read(codec, WM8728_DACCTL);
			snd_soc_write(codec, WM8728_DACCTL, reg & ~0x4);

			/* ..then sync in the register cache. */
			regcache_sync(wm8728->regmap);
		}
		break;

	case SND_SOC_BIAS_OFF:
		reg = snd_soc_read(codec, WM8728_DACCTL);
		snd_soc_write(codec, WM8728_DACCTL, reg | 0x4);
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

#define WM8728_RATES (SNDRV_PCM_RATE_8000_192000)

#define WM8728_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
	SNDRV_PCM_FMTBIT_S24_LE)

static const struct snd_soc_dai_ops wm8728_dai_ops = {
	.hw_params	= wm8728_hw_params,
	.digital_mute	= wm8728_mute,
	.set_fmt	= wm8728_set_dai_fmt,
};

static struct snd_soc_dai_driver wm8728_dai = {
	.name = "wm8728-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = WM8728_RATES,
		.formats = WM8728_FORMATS,
	},
	.ops = &wm8728_dai_ops,
};

static int wm8728_suspend(struct snd_soc_codec *codec)
{
	wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static int wm8728_resume(struct snd_soc_codec *codec)
{
	wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static int wm8728_probe(struct snd_soc_codec *codec)
{
	int ret;

	ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
	if (ret < 0) {
		printk(KERN_ERR "wm8728: failed to configure cache I/O: %d\n",
		       ret);
		return ret;
	}

	/* power on device */
	wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return ret;
}

static int wm8728_remove(struct snd_soc_codec *codec)
{
	wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm8728 = {
	.probe =	wm8728_probe,
	.remove =	wm8728_remove,
	.suspend =	wm8728_suspend,
	.resume =	wm8728_resume,
	.set_bias_level = wm8728_set_bias_level,
	.controls = wm8728_snd_controls,
	.num_controls = ARRAY_SIZE(wm8728_snd_controls),
	.dapm_widgets = wm8728_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8728_dapm_widgets),
	.dapm_routes = wm8728_intercon,
	.num_dapm_routes = ARRAY_SIZE(wm8728_intercon),
};

static const struct of_device_id wm8728_of_match[] = {
	{ .compatible = "wlf,wm8728", },
	{ }
};
MODULE_DEVICE_TABLE(of, wm8728_of_match);

static const struct regmap_config wm8728_regmap = {
	.reg_bits = 7,
	.val_bits = 9,
	.max_register = WM8728_IFCTL,

	.reg_defaults = wm8728_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(wm8728_reg_defaults),
	.cache_type = REGCACHE_RBTREE,
};

#if defined(CONFIG_SPI_MASTER)
static int wm8728_spi_probe(struct spi_device *spi)
{
	struct wm8728_priv *wm8728;
	int ret;

	wm8728 = devm_kzalloc(&spi->dev, sizeof(struct wm8728_priv),
			      GFP_KERNEL);
	if (wm8728 == NULL)
		return -ENOMEM;

	wm8728->regmap = devm_regmap_init_spi(spi, &wm8728_regmap);
	if (IS_ERR(wm8728->regmap))
		return PTR_ERR(wm8728->regmap);

	spi_set_drvdata(spi, wm8728);

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_wm8728, &wm8728_dai, 1);

	return ret;
}

static int wm8728_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);

	return 0;
}

static struct spi_driver wm8728_spi_driver = {
	.driver = {
		.name	= "wm8728",
		.owner	= THIS_MODULE,
		.of_match_table = wm8728_of_match,
	},
	.probe		= wm8728_spi_probe,
	.remove		= wm8728_spi_remove,
};
#endif /* CONFIG_SPI_MASTER */

#if IS_ENABLED(CONFIG_I2C)
static int wm8728_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct wm8728_priv *wm8728;
	int ret;

	wm8728 = devm_kzalloc(&i2c->dev, sizeof(struct wm8728_priv),
			      GFP_KERNEL);
	if (wm8728 == NULL)
		return -ENOMEM;

	wm8728->regmap = devm_regmap_init_i2c(i2c, &wm8728_regmap);
	if (IS_ERR(wm8728->regmap))
		return PTR_ERR(wm8728->regmap);

	i2c_set_clientdata(i2c, wm8728);

	ret =  snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_wm8728, &wm8728_dai, 1);

	return ret;
}

static int wm8728_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	return 0;
}

static const struct i2c_device_id wm8728_i2c_id[] = {
	{ "wm8728", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8728_i2c_id);

static struct i2c_driver wm8728_i2c_driver = {
	.driver = {
		.name = "wm8728",
		.owner = THIS_MODULE,
		.of_match_table = wm8728_of_match,
	},
	.probe =    wm8728_i2c_probe,
	.remove =   wm8728_i2c_remove,
	.id_table = wm8728_i2c_id,
};
#endif

static int __init wm8728_modinit(void)
{
	int ret = 0;
#if IS_ENABLED(CONFIG_I2C)
	ret = i2c_add_driver(&wm8728_i2c_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register wm8728 I2C driver: %d\n",
		       ret);
	}
#endif
#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&wm8728_spi_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register wm8728 SPI driver: %d\n",
		       ret);
	}
#endif
	return ret;
}
module_init(wm8728_modinit);

static void __exit wm8728_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
	i2c_del_driver(&wm8728_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&wm8728_spi_driver);
#endif
}
module_exit(wm8728_exit);

MODULE_DESCRIPTION("ASoC WM8728 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
71cfc902 MB	1	/*
	2	* wm8728.c -- WM8728 ALSA SoC Audio driver
	3	*
	4	* Copyright 2008 Wolfson Microelectronics plc
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.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 version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/moduleparam.h>
	15	#include <linux/init.h>
	16	#include <linux/delay.h>
	17	#include <linux/pm.h>
	18	#include <linux/i2c.h>
	19	#include <linux/platform_device.h>
d16383ef	20	#include <linux/regmap.h>
71cfc902	21	#include <linux/spi/spi.h>
5a0e3ad6	22	#include <linux/slab.h>
45b4d043	23	#include <linux/of_device.h>
71cfc902 MB	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/pcm_params.h>
	27	#include <sound/soc.h>
71cfc902 MB	28	#include <sound/initval.h>
	29	#include <sound/tlv.h>
	30
	31	#include "wm8728.h"
	32
71cfc902 MB	33	/*
	34	* We can't read the WM8728 register space so we cache them instead.
	35	* Note that the defaults here aren't the physical defaults, we latch
	36	* the volume update bits, mute the output and enable infinite zero
	37	* detect.
	38	*/
d16383ef MB	39	static const struct reg_default wm8728_reg_defaults[] = {
	40	{ 0, 0x1ff },
	41	{ 1, 0x1ff },
	42	{ 2, 0x001 },
	43	{ 3, 0x100 },
71cfc902 MB	44	};
71cfc902 MB	45
f0fba2ad LG	46	/* codec private data */
f0fba2ad LG	47	struct wm8728_priv {
d16383ef	48	struct regmap *regmap;
f0fba2ad LG	49	};
f0fba2ad LG	50
71cfc902 MB	51	static const DECLARE_TLV_DB_SCALE(wm8728_tlv, -12750, 50, 1);
	52
	53	static const struct snd_kcontrol_new wm8728_snd_controls[] = {
	54
	55	SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8728_DACLVOL, WM8728_DACRVOL,
	56	0, 255, 0, wm8728_tlv),
	57
	58	SOC_SINGLE("Deemphasis", WM8728_DACCTL, 1, 1, 0),
	59	};
	60
71cfc902 MB	61	/*
	62	* DAPM controls.
	63	*/
	64	static const struct snd_soc_dapm_widget wm8728_dapm_widgets[] = {
	65	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
	66	SND_SOC_DAPM_OUTPUT("VOUTL"),
	67	SND_SOC_DAPM_OUTPUT("VOUTR"),
	68	};
	69
8428edf9	70	static const struct snd_soc_dapm_route wm8728_intercon[] = {
71cfc902 MB	71	{"VOUTL", NULL, "DAC"},
	72	{"VOUTR", NULL, "DAC"},
	73	};
	74
71cfc902 MB	75	static int wm8728_mute(struct snd_soc_dai *dai, int mute)
	76	{
	77	struct snd_soc_codec *codec = dai->codec;
17a52fd6	78	u16 mute_reg = snd_soc_read(codec, WM8728_DACCTL);
71cfc902 MB	79
71cfc902 MB	80	if (mute)
17a52fd6	81	snd_soc_write(codec, WM8728_DACCTL, mute_reg \| 1);
71cfc902	82	else
17a52fd6	83	snd_soc_write(codec, WM8728_DACCTL, mute_reg & ~1);
71cfc902 MB	84
	85	return 0;
	86	}
	87
	88	static int wm8728_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	89	struct snd_pcm_hw_params *params,
dee89c4d MB	90	struct snd_soc_dai *dai)
71cfc902	91	{
e6968a17	92	struct snd_soc_codec *codec = dai->codec;
17a52fd6	93	u16 dac = snd_soc_read(codec, WM8728_DACCTL);
71cfc902 MB	94
	95	dac &= ~0x18;
	96
	97	switch (params_format(params)) {
	98	case SNDRV_PCM_FORMAT_S16_LE:
	99	break;
	100	case SNDRV_PCM_FORMAT_S20_3LE:
	101	dac \|= 0x10;
	102	break;
	103	case SNDRV_PCM_FORMAT_S24_LE:
	104	dac \|= 0x08;
	105	break;
	106	default:
	107	return -EINVAL;
	108	}
	109
17a52fd6	110	snd_soc_write(codec, WM8728_DACCTL, dac);
71cfc902 MB	111
	112	return 0;
	113	}
	114
	115	static int wm8728_set_dai_fmt(struct snd_soc_dai *codec_dai,
	116	unsigned int fmt)
	117	{
	118	struct snd_soc_codec *codec = codec_dai->codec;
17a52fd6	119	u16 iface = snd_soc_read(codec, WM8728_IFCTL);
71cfc902 MB	120
	121	/* Currently only I2S is supported by the driver, though the
	122	* hardware is more flexible.
	123	*/
	124	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	125	case SND_SOC_DAIFMT_I2S:
	126	iface \|= 1;
	127	break;
	128	default:
	129	return -EINVAL;
	130	}
	131
	132	/* The hardware only support full slave mode */
	133	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	134	case SND_SOC_DAIFMT_CBS_CFS:
	135	break;
	136	default:
	137	return -EINVAL;
	138	}
	139
	140	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	141	case SND_SOC_DAIFMT_NB_NF:
	142	iface &= ~0x22;
	143	break;
	144	case SND_SOC_DAIFMT_IB_NF:
	145	iface \|= 0x20;
	146	iface &= ~0x02;
	147	break;
	148	case SND_SOC_DAIFMT_NB_IF:
	149	iface \|= 0x02;
	150	iface &= ~0x20;
	151	break;
	152	case SND_SOC_DAIFMT_IB_IF:
	153	iface \|= 0x22;
	154	break;
	155	default:
	156	return -EINVAL;
	157	}
	158
17a52fd6	159	snd_soc_write(codec, WM8728_IFCTL, iface);
71cfc902 MB	160	return 0;
	161	}
	162
	163	static int wm8728_set_bias_level(struct snd_soc_codec *codec,
	164	enum snd_soc_bias_level level)
	165	{
d16383ef	166	struct wm8728_priv *wm8728 = snd_soc_codec_get_drvdata(codec);
71cfc902	167	u16 reg;
71cfc902 MB	168
	169	switch (level) {
	170	case SND_SOC_BIAS_ON:
	171	case SND_SOC_BIAS_PREPARE:
	172	case SND_SOC_BIAS_STANDBY:
ce6120cc	173	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
71cfc902	174	/* Power everything up... */
17a52fd6 MB	175	reg = snd_soc_read(codec, WM8728_DACCTL);
17a52fd6 MB	176	snd_soc_write(codec, WM8728_DACCTL, reg & ~0x4);
71cfc902 MB	177
71cfc902 MB	178	/* ..then sync in the register cache. */
d16383ef	179	regcache_sync(wm8728->regmap);
71cfc902 MB	180	}
	181	break;
	182
	183	case SND_SOC_BIAS_OFF:
17a52fd6 MB	184	reg = snd_soc_read(codec, WM8728_DACCTL);
17a52fd6 MB	185	snd_soc_write(codec, WM8728_DACCTL, reg \| 0x4);
71cfc902 MB	186	break;
71cfc902 MB	187	}
ce6120cc	188	codec->dapm.bias_level = level;
71cfc902 MB	189	return 0;
	190	}
	191
	192	#define WM8728_RATES (SNDRV_PCM_RATE_8000_192000)
	193
	194	#define WM8728_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	195	SNDRV_PCM_FMTBIT_S24_LE)
	196
85e7652d	197	static const struct snd_soc_dai_ops wm8728_dai_ops = {
6335d055 EM	198	.hw_params = wm8728_hw_params,
	199	.digital_mute = wm8728_mute,
	200	.set_fmt = wm8728_set_dai_fmt,
	201	};
	202
f0fba2ad LG	203	static struct snd_soc_dai_driver wm8728_dai = {
f0fba2ad LG	204	.name = "wm8728-hifi",
71cfc902 MB	205	.playback = {
	206	.stream_name = "Playback",
	207	.channels_min = 2,
	208	.channels_max = 2,
	209	.rates = WM8728_RATES,
	210	.formats = WM8728_FORMATS,
	211	},
6335d055	212	.ops = &wm8728_dai_ops,
71cfc902	213	};
71cfc902	214
84b315ee	215	static int wm8728_suspend(struct snd_soc_codec *codec)
71cfc902	216	{
71cfc902 MB	217	wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);
	218
	219	return 0;
	220	}
	221
f0fba2ad	222	static int wm8728_resume(struct snd_soc_codec *codec)
71cfc902	223	{
29e189c2	224	wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
71cfc902 MB	225
	226	return 0;
	227	}
	228
f0fba2ad	229	static int wm8728_probe(struct snd_soc_codec *codec)
71cfc902	230	{
f0fba2ad	231	int ret;
71cfc902	232
d16383ef	233	ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
17a52fd6 MB	234	if (ret < 0) {
	235	printk(KERN_ERR "wm8728: failed to configure cache I/O: %d\n",
	236	ret);
f0fba2ad	237	return ret;
71cfc902 MB	238	}
	239
	240	/* power on device */
	241	wm8728_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	242
71cfc902	243	return ret;
71cfc902 MB	244	}
71cfc902 MB	245
f0fba2ad	246	static int wm8728_remove(struct snd_soc_codec *codec)
71cfc902	247	{
f0fba2ad	248	wm8728_set_bias_level(codec, SND_SOC_BIAS_OFF);
71cfc902 MB	249	return 0;
	250	}
	251
f0fba2ad LG	252	static struct snd_soc_codec_driver soc_codec_dev_wm8728 = {
	253	.probe = wm8728_probe,
	254	.remove = wm8728_remove,
	255	.suspend = wm8728_suspend,
	256	.resume = wm8728_resume,
	257	.set_bias_level = wm8728_set_bias_level,
e41d5a3b MB	258	.controls = wm8728_snd_controls,
e41d5a3b MB	259	.num_controls = ARRAY_SIZE(wm8728_snd_controls),
8428edf9 LG	260	.dapm_widgets = wm8728_dapm_widgets,
	261	.num_dapm_widgets = ARRAY_SIZE(wm8728_dapm_widgets),
	262	.dapm_routes = wm8728_intercon,
	263	.num_dapm_routes = ARRAY_SIZE(wm8728_intercon),
71cfc902 MB	264	};
71cfc902 MB	265
45b4d043 MB	266	static const struct of_device_id wm8728_of_match[] = {
	267	{ .compatible = "wlf,wm8728", },
	268	{ }
	269	};
	270	MODULE_DEVICE_TABLE(of, wm8728_of_match);
	271
d16383ef MB	272	static const struct regmap_config wm8728_regmap = {
	273	.reg_bits = 7,
	274	.val_bits = 9,
	275	.max_register = WM8728_IFCTL,
	276
	277	.reg_defaults = wm8728_reg_defaults,
	278	.num_reg_defaults = ARRAY_SIZE(wm8728_reg_defaults),
	279	.cache_type = REGCACHE_RBTREE,
	280	};
	281
71cfc902	282	#if defined(CONFIG_SPI_MASTER)
7a79e94e	283	static int wm8728_spi_probe(struct spi_device *spi)
71cfc902	284	{
f0fba2ad	285	struct wm8728_priv *wm8728;
71cfc902 MB	286	int ret;
71cfc902 MB	287
1a9585b0 MB	288	wm8728 = devm_kzalloc(&spi->dev, sizeof(struct wm8728_priv),
1a9585b0 MB	289	GFP_KERNEL);
f0fba2ad LG	290	if (wm8728 == NULL)
f0fba2ad LG	291	return -ENOMEM;
71cfc902	292
d16383ef MB	293	wm8728->regmap = devm_regmap_init_spi(spi, &wm8728_regmap);
	294	if (IS_ERR(wm8728->regmap))
	295	return PTR_ERR(wm8728->regmap);
	296
f0fba2ad	297	spi_set_drvdata(spi, wm8728);
71cfc902	298
f0fba2ad LG	299	ret = snd_soc_register_codec(&spi->dev,
f0fba2ad LG	300	&soc_codec_dev_wm8728, &wm8728_dai, 1);
1a9585b0	301
71cfc902 MB	302	return ret;
	303	}
	304
7a79e94e	305	static int wm8728_spi_remove(struct spi_device *spi)
71cfc902	306	{
f0fba2ad	307	snd_soc_unregister_codec(&spi->dev);
1a9585b0	308
71cfc902 MB	309	return 0;
	310	}
	311
	312	static struct spi_driver wm8728_spi_driver = {
	313	.driver = {
0473e61b	314	.name = "wm8728",
71cfc902	315	.owner = THIS_MODULE,
45b4d043	316	.of_match_table = wm8728_of_match,
71cfc902 MB	317	},
71cfc902 MB	318	.probe = wm8728_spi_probe,
7a79e94e	319	.remove = wm8728_spi_remove,
71cfc902	320	};
71cfc902 MB	321	#endif /* CONFIG_SPI_MASTER */
71cfc902 MB	322
5c153716	323	#if IS_ENABLED(CONFIG_I2C)
7a79e94e BP	324	static int wm8728_i2c_probe(struct i2c_client *i2c,
7a79e94e BP	325	const struct i2c_device_id *id)
71cfc902	326	{
f0fba2ad LG	327	struct wm8728_priv *wm8728;
f0fba2ad LG	328	int ret;
71cfc902	329
1a9585b0 MB	330	wm8728 = devm_kzalloc(&i2c->dev, sizeof(struct wm8728_priv),
1a9585b0 MB	331	GFP_KERNEL);
f0fba2ad	332	if (wm8728 == NULL)
71cfc902 MB	333	return -ENOMEM;
71cfc902 MB	334
d16383ef MB	335	wm8728->regmap = devm_regmap_init_i2c(i2c, &wm8728_regmap);
	336	if (IS_ERR(wm8728->regmap))
	337	return PTR_ERR(wm8728->regmap);
	338
f0fba2ad	339	i2c_set_clientdata(i2c, wm8728);
f0fba2ad LG	340
	341	ret = snd_soc_register_codec(&i2c->dev,
	342	&soc_codec_dev_wm8728, &wm8728_dai, 1);
1a9585b0	343
f0fba2ad LG	344	return ret;
	345	}
	346
7a79e94e	347	static int wm8728_i2c_remove(struct i2c_client *client)
f0fba2ad LG	348	{
f0fba2ad LG	349	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	350	return 0;
f0fba2ad LG	351	}
71cfc902	352
f0fba2ad LG	353	static const struct i2c_device_id wm8728_i2c_id[] = {
	354	{ "wm8728", 0 },
	355	{ }
	356	};
	357	MODULE_DEVICE_TABLE(i2c, wm8728_i2c_id);
	358
	359	static struct i2c_driver wm8728_i2c_driver = {
	360	.driver = {
0473e61b	361	.name = "wm8728",
f0fba2ad	362	.owner = THIS_MODULE,
45b4d043	363	.of_match_table = wm8728_of_match,
f0fba2ad LG	364	},
f0fba2ad LG	365	.probe = wm8728_i2c_probe,
7a79e94e	366	.remove = wm8728_i2c_remove,
f0fba2ad LG	367	.id_table = wm8728_i2c_id,
	368	};
	369	#endif
71cfc902	370
f0fba2ad LG	371	static int __init wm8728_modinit(void)
	372	{
	373	int ret = 0;
5c153716	374	#if IS_ENABLED(CONFIG_I2C)
f0fba2ad LG	375	ret = i2c_add_driver(&wm8728_i2c_driver);
	376	if (ret != 0) {
	377	printk(KERN_ERR "Failed to register wm8728 I2C driver: %d\n",
	378	ret);
71cfc902 MB	379	}
	380	#endif
	381	#if defined(CONFIG_SPI_MASTER)
f0fba2ad LG	382	ret = spi_register_driver(&wm8728_spi_driver);
	383	if (ret != 0) {
	384	printk(KERN_ERR "Failed to register wm8728 SPI driver: %d\n",
	385	ret);
71cfc902 MB	386	}
71cfc902 MB	387	#endif
71cfc902 MB	388	return ret;
71cfc902 MB	389	}
f0fba2ad	390	module_init(wm8728_modinit);
71cfc902	391
f0fba2ad	392	static void __exit wm8728_exit(void)
71cfc902	393	{
5c153716	394	#if IS_ENABLED(CONFIG_I2C)
71cfc902 MB	395	i2c_del_driver(&wm8728_i2c_driver);
	396	#endif
	397	#if defined(CONFIG_SPI_MASTER)
	398	spi_unregister_driver(&wm8728_spi_driver);
	399	#endif
64089b84 MB	400	}
	401	module_exit(wm8728_exit);
	402
71cfc902 MB	403	MODULE_DESCRIPTION("ASoC WM8728 driver");
	404	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	405	MODULE_LICENSE("GPL");