[net-next-2.6.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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>

#include "wm8711.h"

static struct snd_soc_codec *wm8711_codec;

/* codec private data */
struct wm8711_priv {
	struct snd_soc_codec codec;
	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 struct snd_kcontrol_new wm8711_snd_controls[] = {

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

};

/* add non dapm controls */
static int wm8711_add_controls(struct snd_soc_codec *codec)
{
	int err, i;

	for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) {
		err = snd_ctl_add(codec->card,
				snd_soc_cnew(&wm8711_snd_controls[i], codec,
					NULL));
		if (err < 0)
			return err;
	}

	return 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));

	snd_soc_dapm_new_widgets(codec);
	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 = codec->private_data;
	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 = codec->private_data;

	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 | SNDRV_PCM_RATE_11025 |\
		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
		SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
		SNDRV_PCM_RATE_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,
};

struct snd_soc_dai wm8711_dai = {
	.name = "WM8711",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = WM8711_RATES,
		.formats = WM8711_FORMATS,},
	.ops = &wm8711_ops,
};
EXPORT_SYMBOL_GPL(wm8711_dai);

static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;

	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static int wm8711_resume(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->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);
	wm8711_set_bias_level(codec, codec->suspend_bias_level);
	return 0;
}

static int wm8711_probe(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret = 0;

	if (wm8711_codec == NULL) {
		dev_err(&pdev->dev, "Codec device not registered\n");
		return -ENODEV;
	}

	socdev->card->codec = wm8711_codec;
	codec = wm8711_codec;

	/* register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0) {
		dev_err(codec->dev, "failed to create pcms: %d\n", ret);
		goto pcm_err;
	}

	snd_soc_add_controls(codec, wm8711_snd_controls,
			     ARRAY_SIZE(wm8711_snd_controls));
	wm8711_add_widgets(codec);
	ret = snd_soc_init_card(socdev);
	if (ret < 0) {
		dev_err(codec->dev, "failed to register card: %d\n", ret);
		goto card_err;
	}

	return ret;

card_err:
	snd_soc_free_pcms(socdev);
	snd_soc_dapm_free(socdev);
pcm_err:
	return ret;
}

/* power down chip */
static int wm8711_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	snd_soc_free_pcms(socdev);
	snd_soc_dapm_free(socdev);

	return 0;
}

struct snd_soc_codec_device soc_codec_dev_wm8711 = {
	.probe = 	wm8711_probe,
	.remove = 	wm8711_remove,
	.suspend = 	wm8711_suspend,
	.resume =	wm8711_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);

static int wm8711_register(struct wm8711_priv *wm8711,
			   enum snd_soc_control_type control)
{
	int ret;
	struct snd_soc_codec *codec = &wm8711->codec;
	u16 reg;

	if (wm8711_codec) {
		dev_err(codec->dev, "Another WM8711 is registered\n");
		return -EINVAL;
	}

	mutex_init(&codec->mutex);
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);

	codec->private_data = wm8711;
	codec->name = "WM8711";
	codec->owner = THIS_MODULE;
	codec->bias_level = SND_SOC_BIAS_OFF;
	codec->set_bias_level = wm8711_set_bias_level;
	codec->dai = &wm8711_dai;
	codec->num_dai = 1;
	codec->reg_cache_size = WM8711_CACHEREGNUM;
	codec->reg_cache = &wm8711->reg_cache;

	memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg));

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

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

	wm8711_dai.dev = codec->dev;

	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);

	wm8711_codec = codec;

	ret = snd_soc_register_codec(codec);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to register codec: %d\n", ret);
		goto err;
	}

	ret = snd_soc_register_dai(&wm8711_dai);
	if (ret != 0) {
		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
		goto err_codec;
	}

	return 0;

err_codec:
	snd_soc_unregister_codec(codec);
err:
	kfree(wm8711);
	return ret;
}

static void wm8711_unregister(struct wm8711_priv *wm8711)
{
	wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF);
	snd_soc_unregister_dai(&wm8711_dai);
	snd_soc_unregister_codec(&wm8711->codec);
	kfree(wm8711);
	wm8711_codec = NULL;
}

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct wm8711_priv *wm8711;
	struct snd_soc_codec *codec;

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

	codec = &wm8711->codec;
	codec->hw_write = (hw_write_t)i2c_master_send;

	i2c_set_clientdata(i2c, wm8711);
	codec->control_data = i2c;

	codec->dev = &i2c->dev;

	return wm8711_register(wm8711, SND_SOC_I2C);
}

static __devexit int wm8711_i2c_remove(struct i2c_client *client)
{
	struct wm8711_priv *wm8711 = i2c_get_clientdata(client);
	wm8711_unregister(wm8711);
	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 I2C 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
	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
}
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>
	22	#include <sound/core.h>
	23	#include <sound/pcm.h>
	24	#include <sound/pcm_params.h>
	25	#include <sound/soc.h>
	26	#include <sound/soc-dapm.h>
	27	#include <sound/initval.h>
	28
	29	#include "wm8711.h"
	30
318b0b8d	31	static struct snd_soc_codec *wm8711_codec;
bd6d4177 MA	32
	33	/* codec private data */
	34	struct wm8711_priv {
318b0b8d MB	35	struct snd_soc_codec codec;
318b0b8d MB	36	u16 reg_cache[WM8711_CACHEREGNUM];
bd6d4177 MA	37	unsigned int sysclk;
	38	};
	39
	40	/*
	41	* wm8711 register cache
	42	* We can't read the WM8711 register space when we are
	43	* using 2 wire for device control, so we cache them instead.
	44	* There is no point in caching the reset register
	45	*/
	46	static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
	47	0x0079, 0x0079, 0x000a, 0x0008,
	48	0x009f, 0x000a, 0x0000, 0x0000
	49	};
	50
d97d2e35	51	#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
bd6d4177 MA	52
	53	static const struct snd_kcontrol_new wm8711_snd_controls[] = {
	54
	55	SOC_DOUBLE_R("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
	56	0, 127, 0),
	57	SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
	58	7, 1, 0),
	59
	60	};
	61
	62	/* add non dapm controls */
	63	static int wm8711_add_controls(struct snd_soc_codec *codec)
	64	{
	65	int err, i;
	66
	67	for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) {
	68	err = snd_ctl_add(codec->card,
	69	snd_soc_cnew(&wm8711_snd_controls[i], codec,
	70	NULL));
	71	if (err < 0)
	72	return err;
	73	}
	74
	75	return 0;
	76	}
	77
	78	/* Output Mixer */
	79	static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
	80	SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
	81	SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
	82	};
	83
	84	static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
	85	SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
	86	&wm8711_output_mixer_controls[0],
	87	ARRAY_SIZE(wm8711_output_mixer_controls)),
	88	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
	89	SND_SOC_DAPM_OUTPUT("LOUT"),
	90	SND_SOC_DAPM_OUTPUT("LHPOUT"),
	91	SND_SOC_DAPM_OUTPUT("ROUT"),
	92	SND_SOC_DAPM_OUTPUT("RHPOUT"),
	93	};
	94
	95	static const struct snd_soc_dapm_route intercon[] = {
	96	/* output mixer */
	97	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	98	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	99
	100	/* outputs */
	101	{"RHPOUT", NULL, "Output Mixer"},
	102	{"ROUT", NULL, "Output Mixer"},
	103	{"LHPOUT", NULL, "Output Mixer"},
	104	{"LOUT", NULL, "Output Mixer"},
	105	};
	106
	107	static int wm8711_add_widgets(struct snd_soc_codec *codec)
	108	{
	109	snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
	110	ARRAY_SIZE(wm8711_dapm_widgets));
	111
	112	snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
	113
	114	snd_soc_dapm_new_widgets(codec);
	115	return 0;
116	}
117
118	struct _coeff_div {
119	u32 mclk;
120	u32 rate;
121	u16 fs;
122	u8 sr:4;
123	u8 bosr:1;
124	u8 usb:1;
125	};
126
127	/* codec mclk clock divider coefficients */
128	static const struct _coeff_div coeff_div[] = {
129	/* 48k */
130	{12288000, 48000, 256, 0x0, 0x0, 0x0},
131	{18432000, 48000, 384, 0x0, 0x1, 0x0},
132	{12000000, 48000, 250, 0x0, 0x0, 0x1},
133
134	/* 32k */
135	{12288000, 32000, 384, 0x6, 0x0, 0x0},
136	{18432000, 32000, 576, 0x6, 0x1, 0x0},
137	{12000000, 32000, 375, 0x6, 0x0, 0x1},
138
139	/* 8k */
140	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
141	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
142	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
143	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
144	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
145
146	/* 96k */
147	{12288000, 96000, 128, 0x7, 0x0, 0x0},
148	{18432000, 96000, 192, 0x7, 0x1, 0x0},
149	{12000000, 96000, 125, 0x7, 0x0, 0x1},
150
151	/* 44.1k */
152	{11289600, 44100, 256, 0x8, 0x0, 0x0},
153	{16934400, 44100, 384, 0x8, 0x1, 0x0},
154	{12000000, 44100, 272, 0x8, 0x1, 0x1},
155
156	/* 88.2k */
157	{11289600, 88200, 128, 0xf, 0x0, 0x0},
158	{16934400, 88200, 192, 0xf, 0x1, 0x0},
159	{12000000, 88200, 136, 0xf, 0x1, 0x1},
160	};
161
162	static inline int get_coeff(int mclk, int rate)
163	{
164	int i;
165
166	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
167	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
168	return i;
169	}
170	return 0;
171	}
172
173	static int wm8711_hw_params(struct snd_pcm_substream *substream,
174	struct snd_pcm_hw_params *params,
175	struct snd_soc_dai *dai)
176	{
177	struct snd_soc_codec *codec = dai->codec;
178	struct wm8711_priv *wm8711 = codec->private_data;
d97d2e35	179	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
bd6d4177 MA	180	int i = get_coeff(wm8711->sysclk, params_rate(params));
	181	u16 srate = (coeff_div[i].sr << 2) \|
	182	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
	183
d97d2e35	184	snd_soc_write(codec, WM8711_SRATE, srate);
bd6d4177 MA	185
	186	/* bit size */
	187	switch (params_format(params)) {
	188	case SNDRV_PCM_FORMAT_S16_LE:
	189	break;
	190	case SNDRV_PCM_FORMAT_S20_3LE:
	191	iface \|= 0x0004;
	192	break;
	193	case SNDRV_PCM_FORMAT_S24_LE:
	194	iface \|= 0x0008;
	195	break;
	196	}
	197
d97d2e35	198	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	199	return 0;
	200	}
	201
	202	static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
	203	struct snd_soc_dai *dai)
	204	{
	205	struct snd_soc_codec *codec = dai->codec;
	206
	207	/* set active */
d97d2e35	208	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
bd6d4177 MA	209
	210	return 0;
	211	}
	212
	213	static void wm8711_shutdown(struct snd_pcm_substream *substream,
	214	struct snd_soc_dai *dai)
	215	{
	216	struct snd_soc_codec *codec = dai->codec;
	217
	218	/* deactivate */
	219	if (!codec->active) {
	220	udelay(50);
d97d2e35	221	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	222	}
	223	}
	224
	225	static int wm8711_mute(struct snd_soc_dai *dai, int mute)
	226	{
	227	struct snd_soc_codec *codec = dai->codec;
d97d2e35	228	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
bd6d4177 MA	229
bd6d4177 MA	230	if (mute)
d97d2e35	231	snd_soc_write(codec, WM8711_APDIGI, mute_reg \| 0x8);
bd6d4177	232	else
d97d2e35	233	snd_soc_write(codec, WM8711_APDIGI, mute_reg);
bd6d4177 MA	234
	235	return 0;
	236	}
	237
	238	static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	239	int clk_id, unsigned int freq, int dir)
	240	{
	241	struct snd_soc_codec *codec = codec_dai->codec;
	242	struct wm8711_priv *wm8711 = codec->private_data;
	243
	244	switch (freq) {
	245	case 11289600:
	246	case 12000000:
	247	case 12288000:
	248	case 16934400:
	249	case 18432000:
	250	wm8711->sysclk = freq;
	251	return 0;
	252	}
	253	return -EINVAL;
	254	}
	255
	256	static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
	257	unsigned int fmt)
	258	{
	259	struct snd_soc_codec *codec = codec_dai->codec;
	260	u16 iface = 0;
	261
	262	/* set master/slave audio interface */
	263	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	264	case SND_SOC_DAIFMT_CBM_CFM:
	265	iface \|= 0x0040;
	266	break;
	267	case SND_SOC_DAIFMT_CBS_CFS:
	268	break;
	269	default:
	270	return -EINVAL;
	271	}
	272
	273	/* interface format */
	274	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	275	case SND_SOC_DAIFMT_I2S:
	276	iface \|= 0x0002;
	277	break;
	278	case SND_SOC_DAIFMT_RIGHT_J:
	279	break;
	280	case SND_SOC_DAIFMT_LEFT_J:
	281	iface \|= 0x0001;
	282	break;
	283	case SND_SOC_DAIFMT_DSP_A:
	284	iface \|= 0x0003;
	285	break;
	286	case SND_SOC_DAIFMT_DSP_B:
	287	iface \|= 0x0013;
	288	break;
	289	default:
	290	return -EINVAL;
	291	}
	292
	293	/* clock inversion */
	294	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	295	case SND_SOC_DAIFMT_NB_NF:
	296	break;
	297	case SND_SOC_DAIFMT_IB_IF:
298	iface \|= 0x0090;
299	break;
300	case SND_SOC_DAIFMT_IB_NF:
301	iface \|= 0x0080;
302	break;
303	case SND_SOC_DAIFMT_NB_IF:
304	iface \|= 0x0010;
305	break;
306	default:
307	return -EINVAL;
308	}
309
310	/* set iface */
d97d2e35	311	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	312	return 0;
	313	}
	314
	315
	316	static int wm8711_set_bias_level(struct snd_soc_codec *codec,
	317	enum snd_soc_bias_level level)
	318	{
d97d2e35	319	u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
bd6d4177 MA	320
	321	switch (level) {
	322	case SND_SOC_BIAS_ON:
d97d2e35	323	snd_soc_write(codec, WM8711_PWR, reg);
bd6d4177 MA	324	break;
	325	case SND_SOC_BIAS_PREPARE:
	326	break;
	327	case SND_SOC_BIAS_STANDBY:
d97d2e35	328	snd_soc_write(codec, WM8711_PWR, reg \| 0x0040);
bd6d4177 MA	329	break;
bd6d4177 MA	330	case SND_SOC_BIAS_OFF:
d97d2e35 MB	331	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
d97d2e35 MB	332	snd_soc_write(codec, WM8711_PWR, 0xffff);
bd6d4177 MA	333	break;
	334	}
	335	codec->bias_level = level;
	336	return 0;
	337	}
	338
	339	#define WM8711_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	340	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \|\
	341	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \|\
	342	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \|\
	343	SNDRV_PCM_RATE_96000)
	344
	345	#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	346	SNDRV_PCM_FMTBIT_S24_LE)
	347
	348	static struct snd_soc_dai_ops wm8711_ops = {
	349	.prepare = wm8711_pcm_prepare,
	350	.hw_params = wm8711_hw_params,
	351	.shutdown = wm8711_shutdown,
	352	.digital_mute = wm8711_mute,
	353	.set_sysclk = wm8711_set_dai_sysclk,
	354	.set_fmt = wm8711_set_dai_fmt,
	355	};
	356
	357	struct snd_soc_dai wm8711_dai = {
	358	.name = "WM8711",
	359	.playback = {
	360	.stream_name = "Playback",
	361	.channels_min = 1,
	362	.channels_max = 2,
	363	.rates = WM8711_RATES,
	364	.formats = WM8711_FORMATS,},
	365	.ops = &wm8711_ops,
	366	};
	367	EXPORT_SYMBOL_GPL(wm8711_dai);
	368
	369	static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
	370	{
	371	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	372	struct snd_soc_codec *codec = socdev->card->codec;
	373
d97d2e35	374	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	375	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	376	return 0;
	377	}
	378
	379	static int wm8711_resume(struct platform_device *pdev)
	380	{
	381	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	382	struct snd_soc_codec *codec = socdev->card->codec;
	383	int i;
	384	u8 data[2];
	385	u16 *cache = codec->reg_cache;
	386
	387	/* Sync reg_cache with the hardware */
	388	for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
	389	data[0] = (i << 1) \| ((cache[i] >> 8) & 0x0001);
	390	data[1] = cache[i] & 0x00ff;
	391	codec->hw_write(codec->control_data, data, 2);
	392	}
	393	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	394	wm8711_set_bias_level(codec, codec->suspend_bias_level);
	395	return 0;
	396	}
	397
318b0b8d	398	static int wm8711_probe(struct platform_device *pdev)
bd6d4177	399	{
318b0b8d MB	400	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	401	struct snd_soc_codec *codec;
	402	int ret = 0;
bd6d4177	403
318b0b8d MB	404	if (wm8711_codec == NULL) {
	405	dev_err(&pdev->dev, "Codec device not registered\n");
	406	return -ENODEV;
	407	}
bd6d4177	408
318b0b8d MB	409	socdev->card->codec = wm8711_codec;
318b0b8d MB	410	codec = wm8711_codec;
bd6d4177 MA	411
	412	/* register pcms */
	413	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	414	if (ret < 0) {
318b0b8d	415	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
bd6d4177 MA	416	goto pcm_err;
	417	}
	418
318b0b8d MB	419	snd_soc_add_controls(codec, wm8711_snd_controls,
318b0b8d MB	420	ARRAY_SIZE(wm8711_snd_controls));
bd6d4177 MA	421	wm8711_add_widgets(codec);
	422	ret = snd_soc_init_card(socdev);
	423	if (ret < 0) {
318b0b8d	424	dev_err(codec->dev, "failed to register card: %d\n", ret);
bd6d4177 MA	425	goto card_err;
bd6d4177 MA	426	}
318b0b8d	427
bd6d4177 MA	428	return ret;
	429
	430	card_err:
	431	snd_soc_free_pcms(socdev);
	432	snd_soc_dapm_free(socdev);
	433	pcm_err:
bd6d4177 MA	434	return ret;
	435	}
	436
318b0b8d MB	437	/* power down chip */
	438	static int wm8711_remove(struct platform_device *pdev)
	439	{
	440	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
bd6d4177	441
318b0b8d MB	442	snd_soc_free_pcms(socdev);
318b0b8d MB	443	snd_soc_dapm_free(socdev);
bd6d4177	444
318b0b8d MB	445	return 0;
318b0b8d MB	446	}
bd6d4177	447
318b0b8d MB	448	struct snd_soc_codec_device soc_codec_dev_wm8711 = {
	449	.probe = wm8711_probe,
	450	.remove = wm8711_remove,
	451	.suspend = wm8711_suspend,
	452	.resume = wm8711_resume,
	453	};
	454	EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
bd6d4177	455
d97d2e35 MB	456	static int wm8711_register(struct wm8711_priv *wm8711,
d97d2e35 MB	457	enum snd_soc_control_type control)
bd6d4177	458	{
bd6d4177	459	int ret;
318b0b8d MB	460	struct snd_soc_codec *codec = &wm8711->codec;
318b0b8d MB	461	u16 reg;
bd6d4177	462
318b0b8d MB	463	if (wm8711_codec) {
	464	dev_err(codec->dev, "Another WM8711 is registered\n");
	465	return -EINVAL;
bd6d4177 MA	466	}
bd6d4177 MA	467
318b0b8d MB	468	mutex_init(&codec->mutex);
	469	INIT_LIST_HEAD(&codec->dapm_widgets);
	470	INIT_LIST_HEAD(&codec->dapm_paths);
bd6d4177	471
318b0b8d MB	472	codec->private_data = wm8711;
	473	codec->name = "WM8711";
	474	codec->owner = THIS_MODULE;
318b0b8d MB	475	codec->bias_level = SND_SOC_BIAS_OFF;
	476	codec->set_bias_level = wm8711_set_bias_level;
	477	codec->dai = &wm8711_dai;
	478	codec->num_dai = 1;
	479	codec->reg_cache_size = WM8711_CACHEREGNUM;
	480	codec->reg_cache = &wm8711->reg_cache;
bd6d4177	481
318b0b8d	482	memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg));
bd6d4177	483
d97d2e35 MB	484	ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
	485	if (ret < 0) {
	486	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	487	goto err;
	488	}
	489
318b0b8d	490	ret = wm8711_reset(codec);
bd6d4177	491	if (ret < 0) {
318b0b8d	492	dev_err(codec->dev, "Failed to issue reset\n");
d97d2e35	493	goto err;
bd6d4177	494	}
bd6d4177	495
318b0b8d	496	wm8711_dai.dev = codec->dev;
bd6d4177	497
318b0b8d MB	498	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	499
	500	/* Latch the update bits */
d97d2e35 MB	501	reg = snd_soc_read(codec, WM8711_LOUT1V);
	502	snd_soc_write(codec, WM8711_LOUT1V, reg \| 0x0100);
	503	reg = snd_soc_read(codec, WM8711_ROUT1V);
	504	snd_soc_write(codec, WM8711_ROUT1V, reg \| 0x0100);
318b0b8d MB	505
	506	wm8711_codec = codec;
	507
	508	ret = snd_soc_register_codec(codec);
	509	if (ret != 0) {
	510	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
d97d2e35	511	goto err;
318b0b8d MB	512	}
	513
	514	ret = snd_soc_register_dai(&wm8711_dai);
	515	if (ret != 0) {
	516	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
d97d2e35	517	goto err_codec;
318b0b8d	518	}
bd6d4177	519
bd6d4177	520	return 0;
d97d2e35 MB	521
	522	err_codec:
	523	snd_soc_unregister_codec(codec);
	524	err:
	525	kfree(wm8711);
	526	return ret;
bd6d4177 MA	527	}
bd6d4177 MA	528
318b0b8d	529	static void wm8711_unregister(struct wm8711_priv *wm8711)
bd6d4177	530	{
318b0b8d MB	531	wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF);
	532	snd_soc_unregister_dai(&wm8711_dai);
	533	snd_soc_unregister_codec(&wm8711->codec);
	534	kfree(wm8711);
	535	wm8711_codec = NULL;
bd6d4177 MA	536	}
bd6d4177 MA	537
318b0b8d MB	538	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	539	static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
	540	const struct i2c_device_id *id)
bd6d4177	541	{
bd6d4177	542	struct wm8711_priv *wm8711;
318b0b8d	543	struct snd_soc_codec *codec;
bd6d4177 MA	544
bd6d4177 MA	545	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
318b0b8d	546	if (wm8711 == NULL)
bd6d4177	547	return -ENOMEM;
bd6d4177	548
318b0b8d MB	549	codec = &wm8711->codec;
318b0b8d MB	550	codec->hw_write = (hw_write_t)i2c_master_send;
bd6d4177	551
318b0b8d MB	552	i2c_set_clientdata(i2c, wm8711);
318b0b8d MB	553	codec->control_data = i2c;
bd6d4177	554
318b0b8d	555	codec->dev = &i2c->dev;
bd6d4177	556
d97d2e35	557	return wm8711_register(wm8711, SND_SOC_I2C);
318b0b8d	558	}
bd6d4177	559
318b0b8d MB	560	static __devexit int wm8711_i2c_remove(struct i2c_client *client)
	561	{
	562	struct wm8711_priv *wm8711 = i2c_get_clientdata(client);
	563	wm8711_unregister(wm8711);
bd6d4177 MA	564	return 0;
	565	}
	566
318b0b8d MB	567	static const struct i2c_device_id wm8711_i2c_id[] = {
	568	{ "wm8711", 0 },
	569	{ }
bd6d4177	570	};
318b0b8d MB	571	MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
	572
	573	static struct i2c_driver wm8711_i2c_driver = {
	574	.driver = {
	575	.name = "WM8711 I2C Codec",
	576	.owner = THIS_MODULE,
	577	},
	578	.probe = wm8711_i2c_probe,
	579	.remove = __devexit_p(wm8711_i2c_remove),
	580	.id_table = wm8711_i2c_id,
	581	};
	582	#endif
bd6d4177 MA	583
	584	static int __init wm8711_modinit(void)
	585	{
318b0b8d MB	586	int ret;
	587	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	588	ret = i2c_add_driver(&wm8711_i2c_driver);
	589	if (ret != 0) {
	590	printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
	591	ret);
	592	}
	593	#endif
	594	return 0;
bd6d4177 MA	595	}
	596	module_init(wm8711_modinit);
	597
	598	static void __exit wm8711_exit(void)
	599	{
318b0b8d MB	600	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	601	i2c_del_driver(&wm8711_i2c_driver);
	602	#endif
bd6d4177 MA	603	}
	604	module_exit(wm8711_exit);
	605
	606	MODULE_DESCRIPTION("ASoC WM8711 driver");
	607	MODULE_AUTHOR("Mike Arthur");
	608	MODULE_LICENSE("GPL");