[mirror_ubuntu-bionic-kernel.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 wm8711_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"},
};

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));

	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,
	.dapm_widgets = wm8711_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
	.dapm_routes = wm8711_intercon,
	.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
};

#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
20314000	80	static const struct snd_soc_dapm_route wm8711_intercon[] = {
bd6d4177 MA	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
bd6d4177 MA	92	struct _coeff_div {
	93	u32 mclk;
	94	u32 rate;
	95	u16 fs;
	96	u8 sr:4;
	97	u8 bosr:1;
	98	u8 usb:1;
	99	};
	100
	101	/* codec mclk clock divider coefficients */
	102	static const struct _coeff_div coeff_div[] = {
	103	/* 48k */
	104	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	105	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	106	{12000000, 48000, 250, 0x0, 0x0, 0x1},
	107
	108	/* 32k */
	109	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	110	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	111	{12000000, 32000, 375, 0x6, 0x0, 0x1},
	112
	113	/* 8k */
	114	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	115	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	116	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	117	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	118	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
	119
	120	/* 96k */
	121	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	122	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	123	{12000000, 96000, 125, 0x7, 0x0, 0x1},
	124
	125	/* 44.1k */
	126	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	127	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	128	{12000000, 44100, 272, 0x8, 0x1, 0x1},
	129
	130	/* 88.2k */
	131	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	132	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	133	{12000000, 88200, 136, 0xf, 0x1, 0x1},
	134	};
	135
	136	static inline int get_coeff(int mclk, int rate)
	137	{
	138	int i;
	139
	140	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
	141	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
	142	return i;
	143	}
	144	return 0;
	145	}
	146
	147	static int wm8711_hw_params(struct snd_pcm_substream *substream,
	148	struct snd_pcm_hw_params *params,
	149	struct snd_soc_dai *dai)
	150	{
	151	struct snd_soc_codec *codec = dai->codec;
f0fba2ad	152	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
d97d2e35	153	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
bd6d4177 MA	154	int i = get_coeff(wm8711->sysclk, params_rate(params));
	155	u16 srate = (coeff_div[i].sr << 2) \|
	156	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
	157
d97d2e35	158	snd_soc_write(codec, WM8711_SRATE, srate);
bd6d4177 MA	159
	160	/* bit size */
	161	switch (params_format(params)) {
	162	case SNDRV_PCM_FORMAT_S16_LE:
	163	break;
	164	case SNDRV_PCM_FORMAT_S20_3LE:
	165	iface \|= 0x0004;
	166	break;
	167	case SNDRV_PCM_FORMAT_S24_LE:
	168	iface \|= 0x0008;
	169	break;
	170	}
	171
d97d2e35	172	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	173	return 0;
	174	}
	175
	176	static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
	177	struct snd_soc_dai *dai)
	178	{
	179	struct snd_soc_codec *codec = dai->codec;
	180
	181	/* set active */
d97d2e35	182	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
bd6d4177 MA	183
	184	return 0;
	185	}
	186
	187	static void wm8711_shutdown(struct snd_pcm_substream *substream,
	188	struct snd_soc_dai *dai)
	189	{
	190	struct snd_soc_codec *codec = dai->codec;
	191
	192	/* deactivate */
	193	if (!codec->active) {
	194	udelay(50);
d97d2e35	195	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	196	}
	197	}
	198
	199	static int wm8711_mute(struct snd_soc_dai *dai, int mute)
	200	{
	201	struct snd_soc_codec *codec = dai->codec;
d97d2e35	202	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
bd6d4177 MA	203
bd6d4177 MA	204	if (mute)
d97d2e35	205	snd_soc_write(codec, WM8711_APDIGI, mute_reg \| 0x8);
bd6d4177	206	else
d97d2e35	207	snd_soc_write(codec, WM8711_APDIGI, mute_reg);
bd6d4177 MA	208
	209	return 0;
	210	}
	211
	212	static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	213	int clk_id, unsigned int freq, int dir)
	214	{
	215	struct snd_soc_codec *codec = codec_dai->codec;
f0fba2ad	216	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
bd6d4177 MA	217
	218	switch (freq) {
	219	case 11289600:
	220	case 12000000:
	221	case 12288000:
	222	case 16934400:
	223	case 18432000:
	224	wm8711->sysclk = freq;
	225	return 0;
	226	}
	227	return -EINVAL;
	228	}
	229
	230	static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
	231	unsigned int fmt)
	232	{
	233	struct snd_soc_codec *codec = codec_dai->codec;
	234	u16 iface = 0;
	235
	236	/* set master/slave audio interface */
	237	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	238	case SND_SOC_DAIFMT_CBM_CFM:
	239	iface \|= 0x0040;
	240	break;
	241	case SND_SOC_DAIFMT_CBS_CFS:
	242	break;
	243	default:
	244	return -EINVAL;
	245	}
	246
	247	/* interface format */
	248	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	249	case SND_SOC_DAIFMT_I2S:
	250	iface \|= 0x0002;
	251	break;
	252	case SND_SOC_DAIFMT_RIGHT_J:
	253	break;
	254	case SND_SOC_DAIFMT_LEFT_J:
	255	iface \|= 0x0001;
	256	break;
	257	case SND_SOC_DAIFMT_DSP_A:
	258	iface \|= 0x0003;
	259	break;
	260	case SND_SOC_DAIFMT_DSP_B:
	261	iface \|= 0x0013;
	262	break;
	263	default:
	264	return -EINVAL;
	265	}
	266
	267	/* clock inversion */
	268	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	269	case SND_SOC_DAIFMT_NB_NF:
	270	break;
	271	case SND_SOC_DAIFMT_IB_IF:
	272	iface \|= 0x0090;
	273	break;
	274	case SND_SOC_DAIFMT_IB_NF:
	275	iface \|= 0x0080;
	276	break;
	277	case SND_SOC_DAIFMT_NB_IF:
	278	iface \|= 0x0010;
	279	break;
	280	default:
281	return -EINVAL;
282	}
283
284	/* set iface */
d97d2e35	285	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	286	return 0;
	287	}
	288
	289
	290	static int wm8711_set_bias_level(struct snd_soc_codec *codec,
	291	enum snd_soc_bias_level level)
	292	{
d97d2e35	293	u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
bd6d4177 MA	294
	295	switch (level) {
	296	case SND_SOC_BIAS_ON:
d97d2e35	297	snd_soc_write(codec, WM8711_PWR, reg);
bd6d4177 MA	298	break;
	299	case SND_SOC_BIAS_PREPARE:
	300	break;
	301	case SND_SOC_BIAS_STANDBY:
d97d2e35	302	snd_soc_write(codec, WM8711_PWR, reg \| 0x0040);
bd6d4177 MA	303	break;
bd6d4177 MA	304	case SND_SOC_BIAS_OFF:
d97d2e35 MB	305	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
d97d2e35 MB	306	snd_soc_write(codec, WM8711_PWR, 0xffff);
bd6d4177 MA	307	break;
bd6d4177 MA	308	}
ce6120cc	309	codec->dapm.bias_level = level;
bd6d4177 MA	310	return 0;
	311	}
	312
431f7771	313	#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
bd6d4177 MA	314
	315	#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	316	SNDRV_PCM_FMTBIT_S24_LE)
	317
	318	static struct snd_soc_dai_ops wm8711_ops = {
	319	.prepare = wm8711_pcm_prepare,
	320	.hw_params = wm8711_hw_params,
	321	.shutdown = wm8711_shutdown,
	322	.digital_mute = wm8711_mute,
	323	.set_sysclk = wm8711_set_dai_sysclk,
	324	.set_fmt = wm8711_set_dai_fmt,
	325	};
	326
f0fba2ad LG	327	static struct snd_soc_dai_driver wm8711_dai = {
f0fba2ad LG	328	.name = "wm8711-hifi",
bd6d4177 MA	329	.playback = {
	330	.stream_name = "Playback",
	331	.channels_min = 1,
	332	.channels_max = 2,
	333	.rates = WM8711_RATES,
431f7771 MB	334	.formats = WM8711_FORMATS,
431f7771 MB	335	},
bd6d4177 MA	336	.ops = &wm8711_ops,
bd6d4177 MA	337	};
bd6d4177	338
f0fba2ad	339	static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
bd6d4177	340	{
d97d2e35	341	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	342	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	343	return 0;
	344	}
	345
f0fba2ad	346	static int wm8711_resume(struct snd_soc_codec *codec)
bd6d4177	347	{
bd6d4177 MA	348	int i;
	349	u8 data[2];
	350	u16 *cache = codec->reg_cache;
	351
	352	/* Sync reg_cache with the hardware */
	353	for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
	354	data[0] = (i << 1) \| ((cache[i] >> 8) & 0x0001);
	355	data[1] = cache[i] & 0x00ff;
	356	codec->hw_write(codec->control_data, data, 2);
	357	}
	358	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
29e189c2	359
bd6d4177 MA	360	return 0;
	361	}
	362
f0fba2ad	363	static int wm8711_probe(struct snd_soc_codec *codec)
bd6d4177	364	{
f0fba2ad LG	365	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
f0fba2ad LG	366	int ret, reg;
bd6d4177	367
f0fba2ad	368	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
d97d2e35 MB	369	if (ret < 0) {
d97d2e35 MB	370	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
f0fba2ad	371	return ret;
d97d2e35 MB	372	}
d97d2e35 MB	373
318b0b8d	374	ret = wm8711_reset(codec);
bd6d4177	375	if (ret < 0) {
318b0b8d	376	dev_err(codec->dev, "Failed to issue reset\n");
f0fba2ad	377	return ret;
bd6d4177	378	}
bd6d4177	379
318b0b8d MB	380	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	381
	382	/* Latch the update bits */
d97d2e35 MB	383	reg = snd_soc_read(codec, WM8711_LOUT1V);
	384	snd_soc_write(codec, WM8711_LOUT1V, reg \| 0x0100);
	385	reg = snd_soc_read(codec, WM8711_ROUT1V);
	386	snd_soc_write(codec, WM8711_ROUT1V, reg \| 0x0100);
318b0b8d	387
f0fba2ad LG	388	snd_soc_add_controls(codec, wm8711_snd_controls,
f0fba2ad LG	389	ARRAY_SIZE(wm8711_snd_controls));
d97d2e35	390
d97d2e35	391	return ret;
f0fba2ad	392
bd6d4177 MA	393	}
bd6d4177 MA	394
f0fba2ad LG	395	/* power down chip */
f0fba2ad LG	396	static int wm8711_remove(struct snd_soc_codec *codec)
bd6d4177	397	{
f0fba2ad LG	398	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
f0fba2ad LG	399	return 0;
bd6d4177 MA	400	}
bd6d4177 MA	401
f0fba2ad LG	402	static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
	403	.probe = wm8711_probe,
	404	.remove = wm8711_remove,
	405	.suspend = wm8711_suspend,
	406	.resume = wm8711_resume,
	407	.set_bias_level = wm8711_set_bias_level,
e5eec34c	408	.reg_cache_size = ARRAY_SIZE(wm8711_reg),
f0fba2ad LG	409	.reg_word_size = sizeof(u16),
f0fba2ad LG	410	.reg_cache_default = wm8711_reg,
20314000 LG	411	.dapm_widgets = wm8711_dapm_widgets,
	412	.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
	413	.dapm_routes = wm8711_intercon,
	414	.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
f0fba2ad LG	415	};
f0fba2ad LG	416
08aff8cd MB	417	#if defined(CONFIG_SPI_MASTER)
	418	static int __devinit wm8711_spi_probe(struct spi_device *spi)
	419	{
08aff8cd	420	struct wm8711_priv *wm8711;
f0fba2ad	421	int ret;
08aff8cd MB	422
	423	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	424	if (wm8711 == NULL)
	425	return -ENOMEM;
	426
f0fba2ad	427	spi_set_drvdata(spi, wm8711);
f0fba2ad	428	wm8711->bus_type = SND_SOC_SPI;
08aff8cd	429
f0fba2ad LG	430	ret = snd_soc_register_codec(&spi->dev,
	431	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	432	if (ret < 0)
	433	kfree(wm8711);
	434	return ret;
08aff8cd MB	435	}
	436
	437	static int __devexit wm8711_spi_remove(struct spi_device *spi)
	438	{
f0fba2ad LG	439	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	440	kfree(spi_get_drvdata(spi));
08aff8cd MB	441	return 0;
	442	}
	443
08aff8cd MB	444	static struct spi_driver wm8711_spi_driver = {
08aff8cd MB	445	.driver = {
f0fba2ad	446	.name = "wm8711-codec",
08aff8cd MB	447	.owner = THIS_MODULE,
	448	},
	449	.probe = wm8711_spi_probe,
08aff8cd MB	450	.remove = __devexit_p(wm8711_spi_remove),
	451	};
	452	#endif /* CONFIG_SPI_MASTER */
	453
318b0b8d	454	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
f0fba2ad	455	static __devinit int wm8711_i2c_probe(struct i2c_client *client,
318b0b8d	456	const struct i2c_device_id *id)
bd6d4177	457	{
bd6d4177	458	struct wm8711_priv *wm8711;
f0fba2ad	459	int ret;
bd6d4177 MA	460
bd6d4177 MA	461	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
318b0b8d	462	if (wm8711 == NULL)
bd6d4177	463	return -ENOMEM;
bd6d4177	464
f0fba2ad	465	i2c_set_clientdata(client, wm8711);
f0fba2ad	466	wm8711->bus_type = SND_SOC_I2C;
bd6d4177	467
f0fba2ad LG	468	ret = snd_soc_register_codec(&client->dev,
	469	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	470	if (ret < 0)
	471	kfree(wm8711);
	472	return ret;
318b0b8d	473	}
bd6d4177	474
318b0b8d MB	475	static __devexit int wm8711_i2c_remove(struct i2c_client *client)
318b0b8d MB	476	{
f0fba2ad LG	477	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	478	kfree(i2c_get_clientdata(client));
bd6d4177 MA	479	return 0;
	480	}
	481
318b0b8d MB	482	static const struct i2c_device_id wm8711_i2c_id[] = {
	483	{ "wm8711", 0 },
	484	{ }
bd6d4177	485	};
318b0b8d MB	486	MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
	487
	488	static struct i2c_driver wm8711_i2c_driver = {
	489	.driver = {
f0fba2ad	490	.name = "wm8711-codec",
318b0b8d MB	491	.owner = THIS_MODULE,
	492	},
	493	.probe = wm8711_i2c_probe,
	494	.remove = __devexit_p(wm8711_i2c_remove),
	495	.id_table = wm8711_i2c_id,
	496	};
	497	#endif
bd6d4177 MA	498
	499	static int __init wm8711_modinit(void)
	500	{
318b0b8d MB	501	int ret;
	502	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	503	ret = i2c_add_driver(&wm8711_i2c_driver);
	504	if (ret != 0) {
	505	printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
	506	ret);
	507	}
08aff8cd MB	508	#endif
08aff8cd MB	509	#if defined(CONFIG_SPI_MASTER)
bb262767	510	ret = spi_register_driver(&wm8711_spi_driver);
08aff8cd	511	if (ret != 0) {
bb262767	512	printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
08aff8cd MB	513	ret);
08aff8cd MB	514	}
318b0b8d MB	515	#endif
318b0b8d MB	516	return 0;
bd6d4177 MA	517	}
	518	module_init(wm8711_modinit);
	519
	520	static void __exit wm8711_exit(void)
	521	{
318b0b8d MB	522	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	523	i2c_del_driver(&wm8711_i2c_driver);
	524	#endif
08aff8cd	525	#if defined(CONFIG_SPI_MASTER)
bb262767	526	spi_unregister_driver(&wm8711_spi_driver);
08aff8cd	527	#endif
bd6d4177 MA	528	}
	529	module_exit(wm8711_exit);
	530
	531	MODULE_DESCRIPTION("ASoC WM8711 driver");
	532	MODULE_AUTHOR("Mike Arthur");
	533	MODULE_LICENSE("GPL");