[deliverable/linux.git] / sound / soc / codecs / wm8711.c

/*
 * wm8711.c  --  WM8711 ALSA SoC Audio driver
 *
 * Copyright 2006 Wolfson Microelectronics
 *
 * Author: Mike Arthur <linux@wolfsonmicro.com>
 *
 * Based on wm8731.c by Richard Purdie
 *
 * 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/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/initval.h>

#include "wm8711.h"

/* codec private data */
struct wm8711_priv {
	enum snd_soc_control_type bus_type;
	unsigned int sysclk;
};

/*
 * wm8711 register cache
 * We can't read the WM8711 register space when we are
 * using 2 wire for device control, so we cache them instead.
 * There is no point in caching the reset register
 */
static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
	0x0079, 0x0079, 0x000a, 0x0008,
	0x009f, 0x000a, 0x0000, 0x0000
};

#define wm8711_reset(c)	snd_soc_write(c, WM8711_RESET, 0)

static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);

static const struct snd_kcontrol_new wm8711_snd_controls[] = {

SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
		 0, 127, 0, out_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
	7, 1, 0),

};

/* Output Mixer */
static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
};

static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
	&wm8711_output_mixer_controls[0],
	ARRAY_SIZE(wm8711_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
};

static const struct snd_soc_dapm_route intercon[] = {
	/* output mixer */
	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	{"Output Mixer", "HiFi Playback Switch", "DAC"},

	/* outputs */
	{"RHPOUT", NULL, "Output Mixer"},
	{"ROUT", NULL, "Output Mixer"},
	{"LHPOUT", NULL, "Output Mixer"},
	{"LOUT", NULL, "Output Mixer"},
};

static int wm8711_add_widgets(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	snd_soc_dapm_new_controls(dapm, wm8711_dapm_widgets,
				  ARRAY_SIZE(wm8711_dapm_widgets));
	snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));

	return 0;
}

struct _coeff_div {
	u32 mclk;
	u32 rate;
	u16 fs;
	u8 sr:4;
	u8 bosr:1;
	u8 usb:1;
};

/* codec mclk clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
	/* 48k */
	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	{12000000, 48000, 250, 0x0, 0x0, 0x1},

	/* 32k */
	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	{12000000, 32000, 375, 0x6, 0x0, 0x1},

	/* 8k */
	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	{12000000, 8000, 1500, 0x3, 0x0, 0x1},

	/* 96k */
	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	{12000000, 96000, 125, 0x7, 0x0, 0x1},

	/* 44.1k */
	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	{12000000, 44100, 272, 0x8, 0x1, 0x1},

	/* 88.2k */
	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	{12000000, 88200, 136, 0xf, 0x1, 0x1},
};

static inline int get_coeff(int mclk, int rate)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
		if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
			return i;
	}
	return 0;
}

static int wm8711_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;
	struct wm8711_priv *wm8711 =  snd_soc_codec_get_drvdata(codec);
	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
	int i = get_coeff(wm8711->sysclk, params_rate(params));
	u16 srate = (coeff_div[i].sr << 2) |
		(coeff_div[i].bosr << 1) | coeff_div[i].usb;

	snd_soc_write(codec, WM8711_SRATE, srate);

	/* bit size */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		iface |= 0x0004;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		iface |= 0x0008;
		break;
	}

	snd_soc_write(codec, WM8711_IFACE, iface);
	return 0;
}

static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;

	/* set active */
	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);

	return 0;
}

static void wm8711_shutdown(struct snd_pcm_substream *substream,
			    struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;

	/* deactivate */
	if (!codec->active) {
		udelay(50);
		snd_soc_write(codec, WM8711_ACTIVE, 0x0);
	}
}

static int wm8711_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;

	if (mute)
		snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
	else
		snd_soc_write(codec, WM8711_APDIGI, mute_reg);

	return 0;
}

static int wm8711_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 wm8711_priv *wm8711 =  snd_soc_codec_get_drvdata(codec);

	switch (freq) {
	case 11289600:
	case 12000000:
	case 12288000:
	case 16934400:
	case 18432000:
		wm8711->sysclk = freq;
		return 0;
	}
	return -EINVAL;
}

static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
		unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	u16 iface = 0;

	/* set master/slave audio interface */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		iface |= 0x0040;
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		break;
	default:
		return -EINVAL;
	}

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		iface |= 0x0002;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		iface |= 0x0001;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		iface |= 0x0003;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		iface |= 0x0013;
		break;
	default:
		return -EINVAL;
	}

	/* clock inversion */
	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		break;
	case SND_SOC_DAIFMT_IB_IF:
		iface |= 0x0090;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		iface |= 0x0080;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		iface |= 0x0010;
		break;
	default:
		return -EINVAL;
	}

	/* set iface */
	snd_soc_write(codec, WM8711_IFACE, iface);
	return 0;
}


static int wm8711_set_bias_level(struct snd_soc_codec *codec,
	enum snd_soc_bias_level level)
{
	u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;

	switch (level) {
	case SND_SOC_BIAS_ON:
		snd_soc_write(codec, WM8711_PWR, reg);
		break;
	case SND_SOC_BIAS_PREPARE:
		break;
	case SND_SOC_BIAS_STANDBY:
		snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
		break;
	case SND_SOC_BIAS_OFF:
		snd_soc_write(codec, WM8711_ACTIVE, 0x0);
		snd_soc_write(codec, WM8711_PWR, 0xffff);
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

#define WM8711_RATES SNDRV_PCM_RATE_8000_96000

#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
	SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_ops wm8711_ops = {
	.prepare = wm8711_pcm_prepare,
	.hw_params = wm8711_hw_params,
	.shutdown = wm8711_shutdown,
	.digital_mute = wm8711_mute,
	.set_sysclk = wm8711_set_dai_sysclk,
	.set_fmt = wm8711_set_dai_fmt,
};

static struct snd_soc_dai_driver wm8711_dai = {
	.name = "wm8711-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = WM8711_RATES,
		.formats = WM8711_FORMATS,
	},
	.ops = &wm8711_ops,
};

static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
{
	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static int wm8711_resume(struct snd_soc_codec *codec)
{
	int i;
	u8 data[2];
	u16 *cache = codec->reg_cache;

	/* Sync reg_cache with the hardware */
	for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
		data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
		data[1] = cache[i] & 0x00ff;
		codec->hw_write(codec->control_data, data, 2);
	}
	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	return 0;
}

static int wm8711_probe(struct snd_soc_codec *codec)
{
	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
	int ret, reg;

	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
		return ret;
	}

	ret = wm8711_reset(codec);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to issue reset\n");
		return ret;
	}

	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	/* Latch the update bits */
	reg = snd_soc_read(codec, WM8711_LOUT1V);
	snd_soc_write(codec, WM8711_LOUT1V, reg | 0x0100);
	reg = snd_soc_read(codec, WM8711_ROUT1V);
	snd_soc_write(codec, WM8711_ROUT1V, reg | 0x0100);

	snd_soc_add_controls(codec, wm8711_snd_controls,
			     ARRAY_SIZE(wm8711_snd_controls));
	wm8711_add_widgets(codec);

	return ret;

}

/* power down chip */
static int wm8711_remove(struct snd_soc_codec *codec)
{
	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
	.probe =	wm8711_probe,
	.remove =	wm8711_remove,
	.suspend =	wm8711_suspend,
	.resume =	wm8711_resume,
	.set_bias_level = wm8711_set_bias_level,
	.reg_cache_size = ARRAY_SIZE(wm8711_reg),
	.reg_word_size = sizeof(u16),
	.reg_cache_default = wm8711_reg,
};

#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8711_spi_probe(struct spi_device *spi)
{
	struct wm8711_priv *wm8711;
	int ret;

	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	if (wm8711 == NULL)
		return -ENOMEM;

	spi_set_drvdata(spi, wm8711);
	wm8711->bus_type = SND_SOC_SPI;

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_wm8711, &wm8711_dai, 1);
	if (ret < 0)
		kfree(wm8711);
	return ret;
}

static int __devexit wm8711_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	kfree(spi_get_drvdata(spi));
	return 0;
}

static struct spi_driver wm8711_spi_driver = {
	.driver = {
		.name	= "wm8711-codec",
		.owner	= THIS_MODULE,
	},
	.probe		= wm8711_spi_probe,
	.remove		= __devexit_p(wm8711_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8711_i2c_probe(struct i2c_client *client,
				      const struct i2c_device_id *id)
{
	struct wm8711_priv *wm8711;
	int ret;

	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	if (wm8711 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(client, wm8711);
	wm8711->bus_type = SND_SOC_I2C;

	ret =  snd_soc_register_codec(&client->dev,
			&soc_codec_dev_wm8711, &wm8711_dai, 1);
	if (ret < 0)
		kfree(wm8711);
	return ret;
}

static __devexit int wm8711_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	kfree(i2c_get_clientdata(client));
	return 0;
}

static const struct i2c_device_id wm8711_i2c_id[] = {
	{ "wm8711", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);

static struct i2c_driver wm8711_i2c_driver = {
	.driver = {
		.name = "wm8711-codec",
		.owner = THIS_MODULE,
	},
	.probe =    wm8711_i2c_probe,
	.remove =   __devexit_p(wm8711_i2c_remove),
	.id_table = wm8711_i2c_id,
};
#endif

static int __init wm8711_modinit(void)
{
	int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&wm8711_i2c_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
		       ret);
	}
#endif
#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&wm8711_spi_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
		       ret);
	}
#endif
	return 0;
}
module_init(wm8711_modinit);

static void __exit wm8711_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&wm8711_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&wm8711_spi_driver);
#endif
}
module_exit(wm8711_exit);

MODULE_DESCRIPTION("ASoC WM8711 driver");
MODULE_AUTHOR("Mike Arthur");
MODULE_LICENSE("GPL");
Commit	Line	Data
bd6d4177 MA	1	/*
	2	* wm8711.c -- WM8711 ALSA SoC Audio driver
	3	*
	4	* Copyright 2006 Wolfson Microelectronics
	5	*
	6	* Author: Mike Arthur <linux@wolfsonmicro.com>
	7	*
	8	* Based on wm8731.c by Richard Purdie
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/moduleparam.h>
	17	#include <linux/init.h>
	18	#include <linux/delay.h>
	19	#include <linux/pm.h>
	20	#include <linux/i2c.h>
	21	#include <linux/platform_device.h>
bb262767	22	#include <linux/spi/spi.h>
5a0e3ad6	23	#include <linux/slab.h>
bd6d4177 MA	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/pcm_params.h>
	27	#include <sound/soc.h>
b5ab887e	28	#include <sound/tlv.h>
bd6d4177 MA	29	#include <sound/initval.h>
	30
	31	#include "wm8711.h"
	32
bd6d4177 MA	33	/* codec private data */
bd6d4177 MA	34	struct wm8711_priv {
f0fba2ad	35	enum snd_soc_control_type bus_type;
bd6d4177 MA	36	unsigned int sysclk;
	37	};
	38
	39	/*
	40	* wm8711 register cache
	41	* We can't read the WM8711 register space when we are
	42	* using 2 wire for device control, so we cache them instead.
	43	* There is no point in caching the reset register
	44	*/
	45	static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
	46	0x0079, 0x0079, 0x000a, 0x0008,
	47	0x009f, 0x000a, 0x0000, 0x0000
	48	};
	49
d97d2e35	50	#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
bd6d4177	51
b5ab887e MB	52	static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
b5ab887e MB	53
bd6d4177 MA	54	static const struct snd_kcontrol_new wm8711_snd_controls[] = {
bd6d4177 MA	55
b5ab887e MB	56	SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
b5ab887e MB	57	0, 127, 0, out_tlv),
bd6d4177 MA	58	SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
	59	7, 1, 0),
	60
	61	};
	62
bd6d4177 MA	63	/* Output Mixer */
	64	static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
	65	SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
	66	SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
	67	};
	68
	69	static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
	70	SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
	71	&wm8711_output_mixer_controls[0],
	72	ARRAY_SIZE(wm8711_output_mixer_controls)),
	73	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
	74	SND_SOC_DAPM_OUTPUT("LOUT"),
	75	SND_SOC_DAPM_OUTPUT("LHPOUT"),
	76	SND_SOC_DAPM_OUTPUT("ROUT"),
	77	SND_SOC_DAPM_OUTPUT("RHPOUT"),
	78	};
	79
	80	static const struct snd_soc_dapm_route intercon[] = {
	81	/* output mixer */
	82	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	83	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	84
	85	/* outputs */
	86	{"RHPOUT", NULL, "Output Mixer"},
	87	{"ROUT", NULL, "Output Mixer"},
	88	{"LHPOUT", NULL, "Output Mixer"},
	89	{"LOUT", NULL, "Output Mixer"},
	90	};
	91
	92	static int wm8711_add_widgets(struct snd_soc_codec *codec)
	93	{
ce6120cc	94	struct snd_soc_dapm_context *dapm = &codec->dapm;
bd6d4177	95
ce6120cc LG	96	snd_soc_dapm_new_controls(dapm, wm8711_dapm_widgets,
	97	ARRAY_SIZE(wm8711_dapm_widgets));
	98	snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
bd6d4177	99
bd6d4177 MA	100	return 0;
	101	}
	102
	103	struct _coeff_div {
	104	u32 mclk;
	105	u32 rate;
	106	u16 fs;
	107	u8 sr:4;
	108	u8 bosr:1;
	109	u8 usb:1;
	110	};
	111
	112	/* codec mclk clock divider coefficients */
	113	static const struct _coeff_div coeff_div[] = {
	114	/* 48k */
	115	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	116	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	117	{12000000, 48000, 250, 0x0, 0x0, 0x1},
	118
	119	/* 32k */
	120	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	121	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	122	{12000000, 32000, 375, 0x6, 0x0, 0x1},
	123
	124	/* 8k */
	125	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	126	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	127	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	128	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	129	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
	130
	131	/* 96k */
	132	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	133	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	134	{12000000, 96000, 125, 0x7, 0x0, 0x1},
	135
	136	/* 44.1k */
	137	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	138	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	139	{12000000, 44100, 272, 0x8, 0x1, 0x1},
	140
	141	/* 88.2k */
	142	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	143	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	144	{12000000, 88200, 136, 0xf, 0x1, 0x1},
	145	};
	146
	147	static inline int get_coeff(int mclk, int rate)
	148	{
	149	int i;
	150
	151	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
	152	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
	153	return i;
	154	}
	155	return 0;
	156	}
	157
	158	static int wm8711_hw_params(struct snd_pcm_substream *substream,
	159	struct snd_pcm_hw_params *params,
	160	struct snd_soc_dai *dai)
	161	{
	162	struct snd_soc_codec *codec = dai->codec;
f0fba2ad	163	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
d97d2e35	164	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
bd6d4177 MA	165	int i = get_coeff(wm8711->sysclk, params_rate(params));
	166	u16 srate = (coeff_div[i].sr << 2) \|
	167	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
	168
d97d2e35	169	snd_soc_write(codec, WM8711_SRATE, srate);
bd6d4177 MA	170
	171	/* bit size */
	172	switch (params_format(params)) {
	173	case SNDRV_PCM_FORMAT_S16_LE:
	174	break;
	175	case SNDRV_PCM_FORMAT_S20_3LE:
	176	iface \|= 0x0004;
	177	break;
	178	case SNDRV_PCM_FORMAT_S24_LE:
	179	iface \|= 0x0008;
	180	break;
	181	}
	182
d97d2e35	183	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	184	return 0;
	185	}
	186
	187	static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
	188	struct snd_soc_dai *dai)
	189	{
	190	struct snd_soc_codec *codec = dai->codec;
	191
	192	/* set active */
d97d2e35	193	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
bd6d4177 MA	194
	195	return 0;
	196	}
	197
	198	static void wm8711_shutdown(struct snd_pcm_substream *substream,
	199	struct snd_soc_dai *dai)
	200	{
	201	struct snd_soc_codec *codec = dai->codec;
	202
	203	/* deactivate */
	204	if (!codec->active) {
	205	udelay(50);
d97d2e35	206	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	207	}
	208	}
	209
	210	static int wm8711_mute(struct snd_soc_dai *dai, int mute)
	211	{
	212	struct snd_soc_codec *codec = dai->codec;
d97d2e35	213	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
bd6d4177 MA	214
bd6d4177 MA	215	if (mute)
d97d2e35	216	snd_soc_write(codec, WM8711_APDIGI, mute_reg \| 0x8);
bd6d4177	217	else
d97d2e35	218	snd_soc_write(codec, WM8711_APDIGI, mute_reg);
bd6d4177 MA	219
	220	return 0;
	221	}
	222
	223	static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	224	int clk_id, unsigned int freq, int dir)
	225	{
	226	struct snd_soc_codec *codec = codec_dai->codec;
f0fba2ad	227	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
bd6d4177 MA	228
	229	switch (freq) {
	230	case 11289600:
	231	case 12000000:
	232	case 12288000:
	233	case 16934400:
	234	case 18432000:
	235	wm8711->sysclk = freq;
	236	return 0;
	237	}
	238	return -EINVAL;
	239	}
	240
	241	static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
	242	unsigned int fmt)
	243	{
	244	struct snd_soc_codec *codec = codec_dai->codec;
	245	u16 iface = 0;
	246
	247	/* set master/slave audio interface */
	248	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	249	case SND_SOC_DAIFMT_CBM_CFM:
	250	iface \|= 0x0040;
	251	break;
	252	case SND_SOC_DAIFMT_CBS_CFS:
	253	break;
	254	default:
	255	return -EINVAL;
	256	}
	257
	258	/* interface format */
	259	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	260	case SND_SOC_DAIFMT_I2S:
	261	iface \|= 0x0002;
	262	break;
	263	case SND_SOC_DAIFMT_RIGHT_J:
	264	break;
	265	case SND_SOC_DAIFMT_LEFT_J:
	266	iface \|= 0x0001;
	267	break;
	268	case SND_SOC_DAIFMT_DSP_A:
	269	iface \|= 0x0003;
	270	break;
	271	case SND_SOC_DAIFMT_DSP_B:
	272	iface \|= 0x0013;
	273	break;
	274	default:
	275	return -EINVAL;
	276	}
	277
	278	/* clock inversion */
	279	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	280	case SND_SOC_DAIFMT_NB_NF:
	281	break;
	282	case SND_SOC_DAIFMT_IB_IF:
	283	iface \|= 0x0090;
	284	break;
	285	case SND_SOC_DAIFMT_IB_NF:
	286	iface \|= 0x0080;
	287	break;
	288	case SND_SOC_DAIFMT_NB_IF:
	289	iface \|= 0x0010;
	290	break;
	291	default:
292	return -EINVAL;
293	}
294
295	/* set iface */
d97d2e35	296	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	297	return 0;
	298	}
	299
	300
	301	static int wm8711_set_bias_level(struct snd_soc_codec *codec,
	302	enum snd_soc_bias_level level)
	303	{
d97d2e35	304	u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
bd6d4177 MA	305
	306	switch (level) {
	307	case SND_SOC_BIAS_ON:
d97d2e35	308	snd_soc_write(codec, WM8711_PWR, reg);
bd6d4177 MA	309	break;
	310	case SND_SOC_BIAS_PREPARE:
	311	break;
	312	case SND_SOC_BIAS_STANDBY:
d97d2e35	313	snd_soc_write(codec, WM8711_PWR, reg \| 0x0040);
bd6d4177 MA	314	break;
bd6d4177 MA	315	case SND_SOC_BIAS_OFF:
d97d2e35 MB	316	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
d97d2e35 MB	317	snd_soc_write(codec, WM8711_PWR, 0xffff);
bd6d4177 MA	318	break;
bd6d4177 MA	319	}
ce6120cc	320	codec->dapm.bias_level = level;
bd6d4177 MA	321	return 0;
	322	}
	323
431f7771	324	#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
bd6d4177 MA	325
	326	#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	327	SNDRV_PCM_FMTBIT_S24_LE)
	328
	329	static struct snd_soc_dai_ops wm8711_ops = {
	330	.prepare = wm8711_pcm_prepare,
	331	.hw_params = wm8711_hw_params,
	332	.shutdown = wm8711_shutdown,
	333	.digital_mute = wm8711_mute,
	334	.set_sysclk = wm8711_set_dai_sysclk,
	335	.set_fmt = wm8711_set_dai_fmt,
	336	};
	337
f0fba2ad LG	338	static struct snd_soc_dai_driver wm8711_dai = {
f0fba2ad LG	339	.name = "wm8711-hifi",
bd6d4177 MA	340	.playback = {
	341	.stream_name = "Playback",
	342	.channels_min = 1,
	343	.channels_max = 2,
	344	.rates = WM8711_RATES,
431f7771 MB	345	.formats = WM8711_FORMATS,
431f7771 MB	346	},
bd6d4177 MA	347	.ops = &wm8711_ops,
bd6d4177 MA	348	};
bd6d4177	349
f0fba2ad	350	static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
bd6d4177	351	{
d97d2e35	352	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	353	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	354	return 0;
	355	}
	356
f0fba2ad	357	static int wm8711_resume(struct snd_soc_codec *codec)
bd6d4177	358	{
bd6d4177 MA	359	int i;
	360	u8 data[2];
	361	u16 *cache = codec->reg_cache;
	362
	363	/* Sync reg_cache with the hardware */
	364	for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
	365	data[0] = (i << 1) \| ((cache[i] >> 8) & 0x0001);
	366	data[1] = cache[i] & 0x00ff;
	367	codec->hw_write(codec->control_data, data, 2);
	368	}
	369	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
29e189c2	370
bd6d4177 MA	371	return 0;
	372	}
	373
f0fba2ad	374	static int wm8711_probe(struct snd_soc_codec *codec)
bd6d4177	375	{
f0fba2ad LG	376	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
f0fba2ad LG	377	int ret, reg;
bd6d4177	378
f0fba2ad	379	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
d97d2e35 MB	380	if (ret < 0) {
d97d2e35 MB	381	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
f0fba2ad	382	return ret;
d97d2e35 MB	383	}
d97d2e35 MB	384
318b0b8d	385	ret = wm8711_reset(codec);
bd6d4177	386	if (ret < 0) {
318b0b8d	387	dev_err(codec->dev, "Failed to issue reset\n");
f0fba2ad	388	return ret;
bd6d4177	389	}
bd6d4177	390
318b0b8d MB	391	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	392
	393	/* Latch the update bits */
d97d2e35 MB	394	reg = snd_soc_read(codec, WM8711_LOUT1V);
	395	snd_soc_write(codec, WM8711_LOUT1V, reg \| 0x0100);
	396	reg = snd_soc_read(codec, WM8711_ROUT1V);
	397	snd_soc_write(codec, WM8711_ROUT1V, reg \| 0x0100);
318b0b8d	398
f0fba2ad LG	399	snd_soc_add_controls(codec, wm8711_snd_controls,
	400	ARRAY_SIZE(wm8711_snd_controls));
	401	wm8711_add_widgets(codec);
d97d2e35	402
d97d2e35	403	return ret;
f0fba2ad	404
bd6d4177 MA	405	}
bd6d4177 MA	406
f0fba2ad LG	407	/* power down chip */
f0fba2ad LG	408	static int wm8711_remove(struct snd_soc_codec *codec)
bd6d4177	409	{
f0fba2ad LG	410	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
f0fba2ad LG	411	return 0;
bd6d4177 MA	412	}
bd6d4177 MA	413
f0fba2ad LG	414	static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
	415	.probe = wm8711_probe,
	416	.remove = wm8711_remove,
	417	.suspend = wm8711_suspend,
	418	.resume = wm8711_resume,
	419	.set_bias_level = wm8711_set_bias_level,
e5eec34c	420	.reg_cache_size = ARRAY_SIZE(wm8711_reg),
f0fba2ad LG	421	.reg_word_size = sizeof(u16),
	422	.reg_cache_default = wm8711_reg,
	423	};
	424
08aff8cd MB	425	#if defined(CONFIG_SPI_MASTER)
	426	static int __devinit wm8711_spi_probe(struct spi_device *spi)
	427	{
08aff8cd	428	struct wm8711_priv *wm8711;
f0fba2ad	429	int ret;
08aff8cd MB	430
	431	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	432	if (wm8711 == NULL)
	433	return -ENOMEM;
	434
f0fba2ad	435	spi_set_drvdata(spi, wm8711);
f0fba2ad	436	wm8711->bus_type = SND_SOC_SPI;
08aff8cd	437
f0fba2ad LG	438	ret = snd_soc_register_codec(&spi->dev,
	439	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	440	if (ret < 0)
	441	kfree(wm8711);
	442	return ret;
08aff8cd MB	443	}
	444
	445	static int __devexit wm8711_spi_remove(struct spi_device *spi)
	446	{
f0fba2ad LG	447	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	448	kfree(spi_get_drvdata(spi));
08aff8cd MB	449	return 0;
	450	}
	451
08aff8cd MB	452	static struct spi_driver wm8711_spi_driver = {
08aff8cd MB	453	.driver = {
f0fba2ad	454	.name = "wm8711-codec",
08aff8cd MB	455	.owner = THIS_MODULE,
	456	},
	457	.probe = wm8711_spi_probe,
08aff8cd MB	458	.remove = __devexit_p(wm8711_spi_remove),
	459	};
	460	#endif /* CONFIG_SPI_MASTER */
	461
318b0b8d	462	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
f0fba2ad	463	static __devinit int wm8711_i2c_probe(struct i2c_client *client,
318b0b8d	464	const struct i2c_device_id *id)
bd6d4177	465	{
bd6d4177	466	struct wm8711_priv *wm8711;
f0fba2ad	467	int ret;
bd6d4177 MA	468
bd6d4177 MA	469	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
318b0b8d	470	if (wm8711 == NULL)
bd6d4177	471	return -ENOMEM;
bd6d4177	472
f0fba2ad	473	i2c_set_clientdata(client, wm8711);
f0fba2ad	474	wm8711->bus_type = SND_SOC_I2C;
bd6d4177	475
f0fba2ad LG	476	ret = snd_soc_register_codec(&client->dev,
	477	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	478	if (ret < 0)
	479	kfree(wm8711);
	480	return ret;
318b0b8d	481	}
bd6d4177	482
318b0b8d MB	483	static __devexit int wm8711_i2c_remove(struct i2c_client *client)
318b0b8d MB	484	{
f0fba2ad LG	485	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	486	kfree(i2c_get_clientdata(client));
bd6d4177 MA	487	return 0;
	488	}
	489
318b0b8d MB	490	static const struct i2c_device_id wm8711_i2c_id[] = {
	491	{ "wm8711", 0 },
	492	{ }
bd6d4177	493	};
318b0b8d MB	494	MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
	495
	496	static struct i2c_driver wm8711_i2c_driver = {
	497	.driver = {
f0fba2ad	498	.name = "wm8711-codec",
318b0b8d MB	499	.owner = THIS_MODULE,
	500	},
	501	.probe = wm8711_i2c_probe,
	502	.remove = __devexit_p(wm8711_i2c_remove),
	503	.id_table = wm8711_i2c_id,
	504	};
	505	#endif
bd6d4177 MA	506
	507	static int __init wm8711_modinit(void)
	508	{
318b0b8d MB	509	int ret;
	510	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	511	ret = i2c_add_driver(&wm8711_i2c_driver);
	512	if (ret != 0) {
	513	printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
	514	ret);
	515	}
08aff8cd MB	516	#endif
08aff8cd MB	517	#if defined(CONFIG_SPI_MASTER)
bb262767	518	ret = spi_register_driver(&wm8711_spi_driver);
08aff8cd	519	if (ret != 0) {
bb262767	520	printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
08aff8cd MB	521	ret);
08aff8cd MB	522	}
318b0b8d MB	523	#endif
318b0b8d MB	524	return 0;
bd6d4177 MA	525	}
	526	module_init(wm8711_modinit);
	527
	528	static void __exit wm8711_exit(void)
	529	{
318b0b8d MB	530	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	531	i2c_del_driver(&wm8711_i2c_driver);
	532	#endif
08aff8cd	533	#if defined(CONFIG_SPI_MASTER)
bb262767	534	spi_unregister_driver(&wm8711_spi_driver);
08aff8cd	535	#endif
bd6d4177 MA	536	}
	537	module_exit(wm8711_exit);
	538
	539	MODULE_DESCRIPTION("ASoC WM8711 driver");
	540	MODULE_AUTHOR("Mike Arthur");
	541	MODULE_LICENSE("GPL");