[GitHub/mt8127/android_kernel_alcatel_ttab.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/soc-dapm.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;
	u16 reg_cache[WM8711_CACHEREGNUM];
	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)
{
	snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
				  ARRAY_SIZE(wm8711_dapm_widgets));

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