[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 <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"

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 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 = 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_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);

	return ret;

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_SPI_MASTER)
static int __devinit wm8711_spi_probe(struct spi_device *spi)
{
	struct snd_soc_codec *codec;
	struct wm8711_priv *wm8711;

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

	codec = &wm8711->codec;
	codec->control_data = spi;
	codec->dev = &spi->dev;

	dev_set_drvdata(&spi->dev, wm8711);

	return wm8711_register(wm8711, SND_SOC_SPI);
}

static int __devexit wm8711_spi_remove(struct spi_device *spi)
{
	struct wm8711_priv *wm8711 = dev_get_drvdata(&spi->dev);

	wm8711_unregister(wm8711);

	return 0;
}

static struct spi_driver wm8711_spi_driver = {
	.driver = {
		.name	= "wm8711",
		.bus	= &spi_bus_type,
		.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 *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
#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>
bd6d4177 MA	23	#include <sound/core.h>
	24	#include <sound/pcm.h>
	25	#include <sound/pcm_params.h>
	26	#include <sound/soc.h>
	27	#include <sound/soc-dapm.h>
b5ab887e	28	#include <sound/tlv.h>
bd6d4177 MA	29	#include <sound/initval.h>
	30
	31	#include "wm8711.h"
	32
318b0b8d	33	static struct snd_soc_codec *wm8711_codec;
bd6d4177 MA	34
	35	/* codec private data */
	36	struct wm8711_priv {
318b0b8d MB	37	struct snd_soc_codec codec;
318b0b8d MB	38	u16 reg_cache[WM8711_CACHEREGNUM];
bd6d4177 MA	39	unsigned int sysclk;
	40	};
	41
	42	/*
	43	* wm8711 register cache
	44	* We can't read the WM8711 register space when we are
	45	* using 2 wire for device control, so we cache them instead.
	46	* There is no point in caching the reset register
	47	*/
	48	static const u16 wm8711_reg[WM8711_CACHEREGNUM] = {
	49	0x0079, 0x0079, 0x000a, 0x0008,
	50	0x009f, 0x000a, 0x0000, 0x0000
	51	};
	52
d97d2e35	53	#define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0)
bd6d4177	54
b5ab887e MB	55	static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
b5ab887e MB	56
bd6d4177 MA	57	static const struct snd_kcontrol_new wm8711_snd_controls[] = {
bd6d4177 MA	58
b5ab887e MB	59	SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
b5ab887e MB	60	0, 127, 0, out_tlv),
bd6d4177 MA	61	SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
	62	7, 1, 0),
	63
	64	};
	65
bd6d4177 MA	66	/* Output Mixer */
	67	static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
	68	SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
	69	SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
	70	};
	71
	72	static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
	73	SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
	74	&wm8711_output_mixer_controls[0],
	75	ARRAY_SIZE(wm8711_output_mixer_controls)),
	76	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
	77	SND_SOC_DAPM_OUTPUT("LOUT"),
	78	SND_SOC_DAPM_OUTPUT("LHPOUT"),
	79	SND_SOC_DAPM_OUTPUT("ROUT"),
	80	SND_SOC_DAPM_OUTPUT("RHPOUT"),
	81	};
	82
	83	static const struct snd_soc_dapm_route intercon[] = {
	84	/* output mixer */
	85	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	86	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	87
	88	/* outputs */
	89	{"RHPOUT", NULL, "Output Mixer"},
	90	{"ROUT", NULL, "Output Mixer"},
	91	{"LHPOUT", NULL, "Output Mixer"},
	92	{"LOUT", NULL, "Output Mixer"},
	93	};
	94
	95	static int wm8711_add_widgets(struct snd_soc_codec *codec)
	96	{
	97	snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
	98	ARRAY_SIZE(wm8711_dapm_widgets));
	99
	100	snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
	101
bd6d4177 MA	102	return 0;
	103	}
	104
	105	struct _coeff_div {
	106	u32 mclk;
	107	u32 rate;
	108	u16 fs;
	109	u8 sr:4;
	110	u8 bosr:1;
	111	u8 usb:1;
	112	};
	113
	114	/* codec mclk clock divider coefficients */
	115	static const struct _coeff_div coeff_div[] = {
	116	/* 48k */
	117	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	118	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	119	{12000000, 48000, 250, 0x0, 0x0, 0x1},
	120
	121	/* 32k */
	122	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	123	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	124	{12000000, 32000, 375, 0x6, 0x0, 0x1},
	125
	126	/* 8k */
	127	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	128	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	129	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	130	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	131	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
	132
	133	/* 96k */
	134	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	135	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	136	{12000000, 96000, 125, 0x7, 0x0, 0x1},
	137
	138	/* 44.1k */
	139	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	140	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	141	{12000000, 44100, 272, 0x8, 0x1, 0x1},
	142
	143	/* 88.2k */
	144	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	145	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	146	{12000000, 88200, 136, 0xf, 0x1, 0x1},
	147	};
	148
	149	static inline int get_coeff(int mclk, int rate)
	150	{
	151	int i;
	152
	153	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
	154	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
	155	return i;
	156	}
	157	return 0;
	158	}
	159
	160	static int wm8711_hw_params(struct snd_pcm_substream *substream,
	161	struct snd_pcm_hw_params *params,
	162	struct snd_soc_dai *dai)
	163	{
	164	struct snd_soc_codec *codec = dai->codec;
	165	struct wm8711_priv *wm8711 = codec->private_data;
d97d2e35	166	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
bd6d4177 MA	167	int i = get_coeff(wm8711->sysclk, params_rate(params));
	168	u16 srate = (coeff_div[i].sr << 2) \|
	169	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
	170
d97d2e35	171	snd_soc_write(codec, WM8711_SRATE, srate);
bd6d4177 MA	172
	173	/* bit size */
	174	switch (params_format(params)) {
	175	case SNDRV_PCM_FORMAT_S16_LE:
	176	break;
	177	case SNDRV_PCM_FORMAT_S20_3LE:
	178	iface \|= 0x0004;
	179	break;
	180	case SNDRV_PCM_FORMAT_S24_LE:
	181	iface \|= 0x0008;
	182	break;
	183	}
	184
d97d2e35	185	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	186	return 0;
	187	}
	188
	189	static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
	190	struct snd_soc_dai *dai)
	191	{
	192	struct snd_soc_codec *codec = dai->codec;
	193
	194	/* set active */
d97d2e35	195	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
bd6d4177 MA	196
	197	return 0;
	198	}
	199
	200	static void wm8711_shutdown(struct snd_pcm_substream *substream,
	201	struct snd_soc_dai *dai)
	202	{
	203	struct snd_soc_codec *codec = dai->codec;
	204
	205	/* deactivate */
	206	if (!codec->active) {
	207	udelay(50);
d97d2e35	208	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	209	}
	210	}
	211
	212	static int wm8711_mute(struct snd_soc_dai *dai, int mute)
	213	{
	214	struct snd_soc_codec *codec = dai->codec;
d97d2e35	215	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
bd6d4177 MA	216
bd6d4177 MA	217	if (mute)
d97d2e35	218	snd_soc_write(codec, WM8711_APDIGI, mute_reg \| 0x8);
bd6d4177	219	else
d97d2e35	220	snd_soc_write(codec, WM8711_APDIGI, mute_reg);
bd6d4177 MA	221
	222	return 0;
	223	}
	224
	225	static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	226	int clk_id, unsigned int freq, int dir)
	227	{
	228	struct snd_soc_codec *codec = codec_dai->codec;
	229	struct wm8711_priv *wm8711 = codec->private_data;
	230
	231	switch (freq) {
	232	case 11289600:
	233	case 12000000:
	234	case 12288000:
	235	case 16934400:
	236	case 18432000:
	237	wm8711->sysclk = freq;
	238	return 0;
	239	}
	240	return -EINVAL;
	241	}
	242
	243	static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
	244	unsigned int fmt)
	245	{
	246	struct snd_soc_codec *codec = codec_dai->codec;
	247	u16 iface = 0;
	248
	249	/* set master/slave audio interface */
	250	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	251	case SND_SOC_DAIFMT_CBM_CFM:
	252	iface \|= 0x0040;
	253	break;
	254	case SND_SOC_DAIFMT_CBS_CFS:
	255	break;
	256	default:
	257	return -EINVAL;
	258	}
	259
	260	/* interface format */
	261	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	262	case SND_SOC_DAIFMT_I2S:
	263	iface \|= 0x0002;
	264	break;
	265	case SND_SOC_DAIFMT_RIGHT_J:
	266	break;
	267	case SND_SOC_DAIFMT_LEFT_J:
	268	iface \|= 0x0001;
	269	break;
	270	case SND_SOC_DAIFMT_DSP_A:
	271	iface \|= 0x0003;
	272	break;
	273	case SND_SOC_DAIFMT_DSP_B:
	274	iface \|= 0x0013;
	275	break;
	276	default:
	277	return -EINVAL;
	278	}
	279
	280	/* clock inversion */
	281	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	282	case SND_SOC_DAIFMT_NB_NF:
	283	break;
	284	case SND_SOC_DAIFMT_IB_IF:
285	iface \|= 0x0090;
286	break;
287	case SND_SOC_DAIFMT_IB_NF:
288	iface \|= 0x0080;
289	break;
290	case SND_SOC_DAIFMT_NB_IF:
291	iface \|= 0x0010;
292	break;
293	default:
294	return -EINVAL;
295	}
296
297	/* set iface */
d97d2e35	298	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	299	return 0;
	300	}
	301
	302
	303	static int wm8711_set_bias_level(struct snd_soc_codec *codec,
	304	enum snd_soc_bias_level level)
	305	{
d97d2e35	306	u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
bd6d4177 MA	307
	308	switch (level) {
	309	case SND_SOC_BIAS_ON:
d97d2e35	310	snd_soc_write(codec, WM8711_PWR, reg);
bd6d4177 MA	311	break;
	312	case SND_SOC_BIAS_PREPARE:
	313	break;
	314	case SND_SOC_BIAS_STANDBY:
d97d2e35	315	snd_soc_write(codec, WM8711_PWR, reg \| 0x0040);
bd6d4177 MA	316	break;
bd6d4177 MA	317	case SND_SOC_BIAS_OFF:
d97d2e35 MB	318	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
d97d2e35 MB	319	snd_soc_write(codec, WM8711_PWR, 0xffff);
bd6d4177 MA	320	break;
	321	}
	322	codec->bias_level = level;
	323	return 0;
	324	}
	325
431f7771	326	#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
bd6d4177 MA	327
	328	#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	329	SNDRV_PCM_FMTBIT_S24_LE)
	330
	331	static struct snd_soc_dai_ops wm8711_ops = {
	332	.prepare = wm8711_pcm_prepare,
	333	.hw_params = wm8711_hw_params,
	334	.shutdown = wm8711_shutdown,
	335	.digital_mute = wm8711_mute,
	336	.set_sysclk = wm8711_set_dai_sysclk,
	337	.set_fmt = wm8711_set_dai_fmt,
	338	};
	339
	340	struct snd_soc_dai wm8711_dai = {
	341	.name = "WM8711",
	342	.playback = {
	343	.stream_name = "Playback",
	344	.channels_min = 1,
	345	.channels_max = 2,
	346	.rates = WM8711_RATES,
431f7771 MB	347	.formats = WM8711_FORMATS,
431f7771 MB	348	},
bd6d4177 MA	349	.ops = &wm8711_ops,
	350	};
	351	EXPORT_SYMBOL_GPL(wm8711_dai);
	352
	353	static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
	354	{
	355	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	356	struct snd_soc_codec *codec = socdev->card->codec;
	357
d97d2e35	358	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	359	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	360	return 0;
	361	}
	362
	363	static int wm8711_resume(struct platform_device *pdev)
	364	{
	365	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	366	struct snd_soc_codec *codec = socdev->card->codec;
	367	int i;
	368	u8 data[2];
	369	u16 *cache = codec->reg_cache;
	370
	371	/* Sync reg_cache with the hardware */
	372	for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
	373	data[0] = (i << 1) \| ((cache[i] >> 8) & 0x0001);
	374	data[1] = cache[i] & 0x00ff;
	375	codec->hw_write(codec->control_data, data, 2);
	376	}
	377	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	378	wm8711_set_bias_level(codec, codec->suspend_bias_level);
	379	return 0;
	380	}
	381
318b0b8d	382	static int wm8711_probe(struct platform_device *pdev)
bd6d4177	383	{
318b0b8d MB	384	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	385	struct snd_soc_codec *codec;
	386	int ret = 0;
bd6d4177	387
318b0b8d MB	388	if (wm8711_codec == NULL) {
	389	dev_err(&pdev->dev, "Codec device not registered\n");
	390	return -ENODEV;
	391	}
bd6d4177	392
318b0b8d MB	393	socdev->card->codec = wm8711_codec;
318b0b8d MB	394	codec = wm8711_codec;
bd6d4177 MA	395
	396	/* register pcms */
	397	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	398	if (ret < 0) {
318b0b8d	399	dev_err(codec->dev, "failed to create pcms: %d\n", ret);
bd6d4177 MA	400	goto pcm_err;
	401	}
	402
318b0b8d MB	403	snd_soc_add_controls(codec, wm8711_snd_controls,
318b0b8d MB	404	ARRAY_SIZE(wm8711_snd_controls));
bd6d4177	405	wm8711_add_widgets(codec);
318b0b8d	406
bd6d4177 MA	407	return ret;
bd6d4177 MA	408
bd6d4177	409	pcm_err:
bd6d4177 MA	410	return ret;
	411	}
	412
318b0b8d MB	413	/* power down chip */
	414	static int wm8711_remove(struct platform_device *pdev)
	415	{
	416	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
bd6d4177	417
318b0b8d MB	418	snd_soc_free_pcms(socdev);
318b0b8d MB	419	snd_soc_dapm_free(socdev);
bd6d4177	420
318b0b8d MB	421	return 0;
318b0b8d MB	422	}
bd6d4177	423
318b0b8d MB	424	struct snd_soc_codec_device soc_codec_dev_wm8711 = {
	425	.probe = wm8711_probe,
	426	.remove = wm8711_remove,
	427	.suspend = wm8711_suspend,
	428	.resume = wm8711_resume,
	429	};
	430	EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
bd6d4177	431
d97d2e35 MB	432	static int wm8711_register(struct wm8711_priv *wm8711,
d97d2e35 MB	433	enum snd_soc_control_type control)
bd6d4177	434	{
bd6d4177	435	int ret;
318b0b8d MB	436	struct snd_soc_codec *codec = &wm8711->codec;
318b0b8d MB	437	u16 reg;
bd6d4177	438
318b0b8d MB	439	if (wm8711_codec) {
	440	dev_err(codec->dev, "Another WM8711 is registered\n");
	441	return -EINVAL;
bd6d4177 MA	442	}
bd6d4177 MA	443
318b0b8d MB	444	mutex_init(&codec->mutex);
	445	INIT_LIST_HEAD(&codec->dapm_widgets);
	446	INIT_LIST_HEAD(&codec->dapm_paths);
bd6d4177	447
318b0b8d MB	448	codec->private_data = wm8711;
	449	codec->name = "WM8711";
	450	codec->owner = THIS_MODULE;
318b0b8d MB	451	codec->bias_level = SND_SOC_BIAS_OFF;
	452	codec->set_bias_level = wm8711_set_bias_level;
	453	codec->dai = &wm8711_dai;
	454	codec->num_dai = 1;
	455	codec->reg_cache_size = WM8711_CACHEREGNUM;
	456	codec->reg_cache = &wm8711->reg_cache;
bd6d4177	457
318b0b8d	458	memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg));
bd6d4177	459
d97d2e35 MB	460	ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
	461	if (ret < 0) {
	462	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	463	goto err;
	464	}
	465
318b0b8d	466	ret = wm8711_reset(codec);
bd6d4177	467	if (ret < 0) {
318b0b8d	468	dev_err(codec->dev, "Failed to issue reset\n");
d97d2e35	469	goto err;
bd6d4177	470	}
bd6d4177	471
318b0b8d	472	wm8711_dai.dev = codec->dev;
bd6d4177	473
318b0b8d MB	474	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	475
	476	/* Latch the update bits */
d97d2e35 MB	477	reg = snd_soc_read(codec, WM8711_LOUT1V);
	478	snd_soc_write(codec, WM8711_LOUT1V, reg \| 0x0100);
	479	reg = snd_soc_read(codec, WM8711_ROUT1V);
	480	snd_soc_write(codec, WM8711_ROUT1V, reg \| 0x0100);
318b0b8d MB	481
	482	wm8711_codec = codec;
	483
	484	ret = snd_soc_register_codec(codec);
	485	if (ret != 0) {
	486	dev_err(codec->dev, "Failed to register codec: %d\n", ret);
d97d2e35	487	goto err;
318b0b8d MB	488	}
	489
	490	ret = snd_soc_register_dai(&wm8711_dai);
	491	if (ret != 0) {
	492	dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
d97d2e35	493	goto err_codec;
318b0b8d	494	}
bd6d4177	495
bd6d4177	496	return 0;
d97d2e35 MB	497
	498	err_codec:
	499	snd_soc_unregister_codec(codec);
	500	err:
	501	kfree(wm8711);
	502	return ret;
bd6d4177 MA	503	}
bd6d4177 MA	504
318b0b8d	505	static void wm8711_unregister(struct wm8711_priv *wm8711)
bd6d4177	506	{
318b0b8d MB	507	wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF);
	508	snd_soc_unregister_dai(&wm8711_dai);
	509	snd_soc_unregister_codec(&wm8711->codec);
	510	kfree(wm8711);
	511	wm8711_codec = NULL;
bd6d4177 MA	512	}
bd6d4177 MA	513
08aff8cd MB	514	#if defined(CONFIG_SPI_MASTER)
	515	static int __devinit wm8711_spi_probe(struct spi_device *spi)
	516	{
	517	struct snd_soc_codec *codec;
	518	struct wm8711_priv *wm8711;
	519
	520	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	521	if (wm8711 == NULL)
	522	return -ENOMEM;
	523
	524	codec = &wm8711->codec;
	525	codec->control_data = spi;
	526	codec->dev = &spi->dev;
	527
	528	dev_set_drvdata(&spi->dev, wm8711);
	529
	530	return wm8711_register(wm8711, SND_SOC_SPI);
	531	}
	532
	533	static int __devexit wm8711_spi_remove(struct spi_device *spi)
	534	{
	535	struct wm8711_priv *wm8711 = dev_get_drvdata(&spi->dev);
	536
	537	wm8711_unregister(wm8711);
	538
	539	return 0;
	540	}
	541
08aff8cd MB	542	static struct spi_driver wm8711_spi_driver = {
	543	.driver = {
	544	.name = "wm8711",
	545	.bus = &spi_bus_type,
	546	.owner = THIS_MODULE,
	547	},
	548	.probe = wm8711_spi_probe,
08aff8cd MB	549	.remove = __devexit_p(wm8711_spi_remove),
	550	};
	551	#endif /* CONFIG_SPI_MASTER */
	552
318b0b8d MB	553	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	554	static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
	555	const struct i2c_device_id *id)
bd6d4177	556	{
bd6d4177	557	struct wm8711_priv *wm8711;
318b0b8d	558	struct snd_soc_codec *codec;
bd6d4177 MA	559
bd6d4177 MA	560	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
318b0b8d	561	if (wm8711 == NULL)
bd6d4177	562	return -ENOMEM;
bd6d4177	563
318b0b8d MB	564	codec = &wm8711->codec;
318b0b8d MB	565	codec->hw_write = (hw_write_t)i2c_master_send;
bd6d4177	566
318b0b8d MB	567	i2c_set_clientdata(i2c, wm8711);
318b0b8d MB	568	codec->control_data = i2c;
bd6d4177	569
318b0b8d	570	codec->dev = &i2c->dev;
bd6d4177	571
d97d2e35	572	return wm8711_register(wm8711, SND_SOC_I2C);
318b0b8d	573	}
bd6d4177	574
318b0b8d MB	575	static __devexit int wm8711_i2c_remove(struct i2c_client *client)
	576	{
	577	struct wm8711_priv *wm8711 = i2c_get_clientdata(client);
	578	wm8711_unregister(wm8711);
bd6d4177 MA	579	return 0;
	580	}
	581
318b0b8d MB	582	static const struct i2c_device_id wm8711_i2c_id[] = {
	583	{ "wm8711", 0 },
	584	{ }
bd6d4177	585	};
318b0b8d MB	586	MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
	587
	588	static struct i2c_driver wm8711_i2c_driver = {
	589	.driver = {
	590	.name = "WM8711 I2C Codec",
	591	.owner = THIS_MODULE,
	592	},
	593	.probe = wm8711_i2c_probe,
	594	.remove = __devexit_p(wm8711_i2c_remove),
	595	.id_table = wm8711_i2c_id,
	596	};
	597	#endif
bd6d4177 MA	598
	599	static int __init wm8711_modinit(void)
	600	{
318b0b8d MB	601	int ret;
	602	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	603	ret = i2c_add_driver(&wm8711_i2c_driver);
	604	if (ret != 0) {
	605	printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
	606	ret);
	607	}
08aff8cd MB	608	#endif
08aff8cd MB	609	#if defined(CONFIG_SPI_MASTER)
bb262767	610	ret = spi_register_driver(&wm8711_spi_driver);
08aff8cd	611	if (ret != 0) {
bb262767	612	printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
08aff8cd MB	613	ret);
08aff8cd MB	614	}
318b0b8d MB	615	#endif
318b0b8d MB	616	return 0;
bd6d4177 MA	617	}
	618	module_init(wm8711_modinit);
	619
	620	static void __exit wm8711_exit(void)
	621	{
318b0b8d MB	622	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	623	i2c_del_driver(&wm8711_i2c_driver);
	624	#endif
08aff8cd	625	#if defined(CONFIG_SPI_MASTER)
bb262767	626	spi_unregister_driver(&wm8711_spi_driver);
08aff8cd	627	#endif
bd6d4177 MA	628	}
	629	module_exit(wm8711_exit);
	630
	631	MODULE_DESCRIPTION("ASoC WM8711 driver");
	632	MODULE_AUTHOR("Mike Arthur");
	633	MODULE_LICENSE("GPL");