[mirror_ubuntu-bionic-kernel.git] / sound / soc / codecs / wm8711.c

/*
 * wm8711.c  --  WM8711 ALSA SoC Audio driver
 *
 * Copyright 2006 Wolfson Microelectronics
 *
 * Author: Mike Arthur <Mike.Arthur@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 <linux/of_device.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:
		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
			snd_soc_cache_sync(codec);

		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)
{
	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;

	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 */
	snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
	snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 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),
};

static const struct of_device_id wm8711_of_match[] = {
	{ .compatible = "wlf,wm8711", },
	{ }
};
MODULE_DEVICE_TABLE(of, wm8711_of_match);

#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",
		.owner	= THIS_MODULE,
		.of_match_table = wm8711_of_match,
	},
	.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",
		.owner = THIS_MODULE,
		.of_match_table = wm8711_of_match,
	},
	.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	*
9a185b9a	6	* Author: Mike Arthur <Mike.Arthur@wolfsonmicro.com>
bd6d4177 MA	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>
1552c8f6	24	#include <linux/of_device.h>
bd6d4177 MA	25	#include <sound/core.h>
	26	#include <sound/pcm.h>
	27	#include <sound/pcm_params.h>
	28	#include <sound/soc.h>
b5ab887e	29	#include <sound/tlv.h>
bd6d4177 MA	30	#include <sound/initval.h>
	31
	32	#include "wm8711.h"
	33
bd6d4177 MA	34	/* codec private data */
bd6d4177 MA	35	struct wm8711_priv {
f0fba2ad	36	enum snd_soc_control_type bus_type;
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	52
b5ab887e MB	53	static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
b5ab887e MB	54
bd6d4177 MA	55	static const struct snd_kcontrol_new wm8711_snd_controls[] = {
bd6d4177 MA	56
b5ab887e MB	57	SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
b5ab887e MB	58	0, 127, 0, out_tlv),
bd6d4177 MA	59	SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
	60	7, 1, 0),
	61
	62	};
	63
bd6d4177 MA	64	/* Output Mixer */
	65	static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
	66	SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
	67	SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
	68	};
	69
	70	static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
	71	SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
	72	&wm8711_output_mixer_controls[0],
	73	ARRAY_SIZE(wm8711_output_mixer_controls)),
	74	SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
	75	SND_SOC_DAPM_OUTPUT("LOUT"),
	76	SND_SOC_DAPM_OUTPUT("LHPOUT"),
	77	SND_SOC_DAPM_OUTPUT("ROUT"),
	78	SND_SOC_DAPM_OUTPUT("RHPOUT"),
	79	};
	80
20314000	81	static const struct snd_soc_dapm_route wm8711_intercon[] = {
bd6d4177 MA	82	/* output mixer */
	83	{"Output Mixer", "Line Bypass Switch", "Line Input"},
	84	{"Output Mixer", "HiFi Playback Switch", "DAC"},
	85
	86	/* outputs */
	87	{"RHPOUT", NULL, "Output Mixer"},
	88	{"ROUT", NULL, "Output Mixer"},
	89	{"LHPOUT", NULL, "Output Mixer"},
	90	{"LOUT", NULL, "Output Mixer"},
	91	};
	92
bd6d4177 MA	93	struct _coeff_div {
	94	u32 mclk;
	95	u32 rate;
	96	u16 fs;
	97	u8 sr:4;
	98	u8 bosr:1;
	99	u8 usb:1;
	100	};
	101
	102	/* codec mclk clock divider coefficients */
	103	static const struct _coeff_div coeff_div[] = {
	104	/* 48k */
	105	{12288000, 48000, 256, 0x0, 0x0, 0x0},
	106	{18432000, 48000, 384, 0x0, 0x1, 0x0},
	107	{12000000, 48000, 250, 0x0, 0x0, 0x1},
	108
	109	/* 32k */
	110	{12288000, 32000, 384, 0x6, 0x0, 0x0},
	111	{18432000, 32000, 576, 0x6, 0x1, 0x0},
	112	{12000000, 32000, 375, 0x6, 0x0, 0x1},
	113
	114	/* 8k */
	115	{12288000, 8000, 1536, 0x3, 0x0, 0x0},
	116	{18432000, 8000, 2304, 0x3, 0x1, 0x0},
	117	{11289600, 8000, 1408, 0xb, 0x0, 0x0},
	118	{16934400, 8000, 2112, 0xb, 0x1, 0x0},
	119	{12000000, 8000, 1500, 0x3, 0x0, 0x1},
	120
	121	/* 96k */
	122	{12288000, 96000, 128, 0x7, 0x0, 0x0},
	123	{18432000, 96000, 192, 0x7, 0x1, 0x0},
	124	{12000000, 96000, 125, 0x7, 0x0, 0x1},
	125
	126	/* 44.1k */
	127	{11289600, 44100, 256, 0x8, 0x0, 0x0},
	128	{16934400, 44100, 384, 0x8, 0x1, 0x0},
	129	{12000000, 44100, 272, 0x8, 0x1, 0x1},
	130
	131	/* 88.2k */
	132	{11289600, 88200, 128, 0xf, 0x0, 0x0},
	133	{16934400, 88200, 192, 0xf, 0x1, 0x0},
	134	{12000000, 88200, 136, 0xf, 0x1, 0x1},
	135	};
	136
	137	static inline int get_coeff(int mclk, int rate)
	138	{
	139	int i;
	140
	141	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
	142	if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
	143	return i;
	144	}
	145	return 0;
	146	}
	147
	148	static int wm8711_hw_params(struct snd_pcm_substream *substream,
	149	struct snd_pcm_hw_params *params,
	150	struct snd_soc_dai *dai)
	151	{
	152	struct snd_soc_codec *codec = dai->codec;
f0fba2ad	153	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
d97d2e35	154	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
bd6d4177 MA	155	int i = get_coeff(wm8711->sysclk, params_rate(params));
	156	u16 srate = (coeff_div[i].sr << 2) \|
	157	(coeff_div[i].bosr << 1) \| coeff_div[i].usb;
	158
d97d2e35	159	snd_soc_write(codec, WM8711_SRATE, srate);
bd6d4177 MA	160
	161	/* bit size */
	162	switch (params_format(params)) {
	163	case SNDRV_PCM_FORMAT_S16_LE:
	164	break;
	165	case SNDRV_PCM_FORMAT_S20_3LE:
	166	iface \|= 0x0004;
	167	break;
	168	case SNDRV_PCM_FORMAT_S24_LE:
	169	iface \|= 0x0008;
	170	break;
	171	}
	172
d97d2e35	173	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	174	return 0;
	175	}
	176
	177	static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
	178	struct snd_soc_dai *dai)
	179	{
	180	struct snd_soc_codec *codec = dai->codec;
	181
	182	/* set active */
d97d2e35	183	snd_soc_write(codec, WM8711_ACTIVE, 0x0001);
bd6d4177 MA	184
	185	return 0;
	186	}
	187
	188	static void wm8711_shutdown(struct snd_pcm_substream *substream,
	189	struct snd_soc_dai *dai)
	190	{
	191	struct snd_soc_codec *codec = dai->codec;
	192
	193	/* deactivate */
	194	if (!codec->active) {
	195	udelay(50);
d97d2e35	196	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	197	}
	198	}
	199
	200	static int wm8711_mute(struct snd_soc_dai *dai, int mute)
	201	{
	202	struct snd_soc_codec *codec = dai->codec;
d97d2e35	203	u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
bd6d4177 MA	204
bd6d4177 MA	205	if (mute)
d97d2e35	206	snd_soc_write(codec, WM8711_APDIGI, mute_reg \| 0x8);
bd6d4177	207	else
d97d2e35	208	snd_soc_write(codec, WM8711_APDIGI, mute_reg);
bd6d4177 MA	209
	210	return 0;
	211	}
	212
	213	static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
	214	int clk_id, unsigned int freq, int dir)
	215	{
	216	struct snd_soc_codec *codec = codec_dai->codec;
f0fba2ad	217	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
bd6d4177 MA	218
	219	switch (freq) {
	220	case 11289600:
	221	case 12000000:
	222	case 12288000:
	223	case 16934400:
	224	case 18432000:
	225	wm8711->sysclk = freq;
	226	return 0;
	227	}
	228	return -EINVAL;
	229	}
	230
	231	static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
	232	unsigned int fmt)
	233	{
	234	struct snd_soc_codec *codec = codec_dai->codec;
	235	u16 iface = 0;
	236
	237	/* set master/slave audio interface */
	238	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	239	case SND_SOC_DAIFMT_CBM_CFM:
	240	iface \|= 0x0040;
	241	break;
	242	case SND_SOC_DAIFMT_CBS_CFS:
	243	break;
	244	default:
	245	return -EINVAL;
	246	}
	247
	248	/* interface format */
	249	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	250	case SND_SOC_DAIFMT_I2S:
	251	iface \|= 0x0002;
	252	break;
	253	case SND_SOC_DAIFMT_RIGHT_J:
	254	break;
	255	case SND_SOC_DAIFMT_LEFT_J:
	256	iface \|= 0x0001;
	257	break;
	258	case SND_SOC_DAIFMT_DSP_A:
	259	iface \|= 0x0003;
	260	break;
	261	case SND_SOC_DAIFMT_DSP_B:
	262	iface \|= 0x0013;
	263	break;
	264	default:
	265	return -EINVAL;
	266	}
	267
	268	/* clock inversion */
	269	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	270	case SND_SOC_DAIFMT_NB_NF:
	271	break;
	272	case SND_SOC_DAIFMT_IB_IF:
	273	iface \|= 0x0090;
	274	break;
	275	case SND_SOC_DAIFMT_IB_NF:
	276	iface \|= 0x0080;
	277	break;
	278	case SND_SOC_DAIFMT_NB_IF:
	279	iface \|= 0x0010;
	280	break;
	281	default:
282	return -EINVAL;
283	}
284
285	/* set iface */
d97d2e35	286	snd_soc_write(codec, WM8711_IFACE, iface);
bd6d4177 MA	287	return 0;
	288	}
	289
bd6d4177 MA	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:
960622da AL	302	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
	303	snd_soc_cache_sync(codec);
	304
d97d2e35	305	snd_soc_write(codec, WM8711_PWR, reg \| 0x0040);
bd6d4177 MA	306	break;
bd6d4177 MA	307	case SND_SOC_BIAS_OFF:
d97d2e35 MB	308	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
d97d2e35 MB	309	snd_soc_write(codec, WM8711_PWR, 0xffff);
bd6d4177 MA	310	break;
bd6d4177 MA	311	}
ce6120cc	312	codec->dapm.bias_level = level;
bd6d4177 MA	313	return 0;
	314	}
	315
431f7771	316	#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
bd6d4177 MA	317
	318	#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	319	SNDRV_PCM_FMTBIT_S24_LE)
	320
	321	static struct snd_soc_dai_ops wm8711_ops = {
	322	.prepare = wm8711_pcm_prepare,
	323	.hw_params = wm8711_hw_params,
	324	.shutdown = wm8711_shutdown,
	325	.digital_mute = wm8711_mute,
	326	.set_sysclk = wm8711_set_dai_sysclk,
	327	.set_fmt = wm8711_set_dai_fmt,
	328	};
	329
f0fba2ad LG	330	static struct snd_soc_dai_driver wm8711_dai = {
f0fba2ad LG	331	.name = "wm8711-hifi",
bd6d4177 MA	332	.playback = {
	333	.stream_name = "Playback",
	334	.channels_min = 1,
	335	.channels_max = 2,
	336	.rates = WM8711_RATES,
431f7771 MB	337	.formats = WM8711_FORMATS,
431f7771 MB	338	},
bd6d4177 MA	339	.ops = &wm8711_ops,
bd6d4177 MA	340	};
bd6d4177	341
f0fba2ad	342	static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state)
bd6d4177	343	{
d97d2e35	344	snd_soc_write(codec, WM8711_ACTIVE, 0x0);
bd6d4177 MA	345	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
	346	return 0;
	347	}
	348
f0fba2ad	349	static int wm8711_resume(struct snd_soc_codec *codec)
bd6d4177	350	{
bd6d4177	351	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
bd6d4177 MA	352	return 0;
	353	}
	354
f0fba2ad	355	static int wm8711_probe(struct snd_soc_codec *codec)
bd6d4177	356	{
f0fba2ad	357	struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
d434bc32	358	int ret;
bd6d4177	359
f0fba2ad	360	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type);
d97d2e35 MB	361	if (ret < 0) {
d97d2e35 MB	362	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
f0fba2ad	363	return ret;
d97d2e35 MB	364	}
d97d2e35 MB	365
318b0b8d	366	ret = wm8711_reset(codec);
bd6d4177	367	if (ret < 0) {
318b0b8d	368	dev_err(codec->dev, "Failed to issue reset\n");
f0fba2ad	369	return ret;
bd6d4177	370	}
bd6d4177	371
318b0b8d MB	372	wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	373
	374	/* Latch the update bits */
11b9ce62 AL	375	snd_soc_update_bits(codec, WM8711_LOUT1V, 0x0100, 0x0100);
11b9ce62 AL	376	snd_soc_update_bits(codec, WM8711_ROUT1V, 0x0100, 0x0100);
318b0b8d	377
f0fba2ad LG	378	snd_soc_add_controls(codec, wm8711_snd_controls,
f0fba2ad LG	379	ARRAY_SIZE(wm8711_snd_controls));
d97d2e35	380
d97d2e35	381	return ret;
f0fba2ad	382
bd6d4177 MA	383	}
bd6d4177 MA	384
f0fba2ad LG	385	/* power down chip */
f0fba2ad LG	386	static int wm8711_remove(struct snd_soc_codec *codec)
bd6d4177	387	{
f0fba2ad LG	388	wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
f0fba2ad LG	389	return 0;
bd6d4177 MA	390	}
bd6d4177 MA	391
f0fba2ad LG	392	static struct snd_soc_codec_driver soc_codec_dev_wm8711 = {
	393	.probe = wm8711_probe,
	394	.remove = wm8711_remove,
	395	.suspend = wm8711_suspend,
	396	.resume = wm8711_resume,
	397	.set_bias_level = wm8711_set_bias_level,
e5eec34c	398	.reg_cache_size = ARRAY_SIZE(wm8711_reg),
f0fba2ad LG	399	.reg_word_size = sizeof(u16),
f0fba2ad LG	400	.reg_cache_default = wm8711_reg,
20314000 LG	401	.dapm_widgets = wm8711_dapm_widgets,
	402	.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
	403	.dapm_routes = wm8711_intercon,
	404	.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
f0fba2ad LG	405	};
f0fba2ad LG	406
1552c8f6 MB	407	static const struct of_device_id wm8711_of_match[] = {
	408	{ .compatible = "wlf,wm8711", },
	409	{ }
	410	};
	411	MODULE_DEVICE_TABLE(of, wm8711_of_match);
	412
08aff8cd MB	413	#if defined(CONFIG_SPI_MASTER)
	414	static int __devinit wm8711_spi_probe(struct spi_device *spi)
	415	{
08aff8cd	416	struct wm8711_priv *wm8711;
f0fba2ad	417	int ret;
08aff8cd MB	418
	419	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
	420	if (wm8711 == NULL)
	421	return -ENOMEM;
	422
f0fba2ad	423	spi_set_drvdata(spi, wm8711);
f0fba2ad	424	wm8711->bus_type = SND_SOC_SPI;
08aff8cd	425
f0fba2ad LG	426	ret = snd_soc_register_codec(&spi->dev,
	427	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	428	if (ret < 0)
	429	kfree(wm8711);
	430	return ret;
08aff8cd MB	431	}
	432
	433	static int __devexit wm8711_spi_remove(struct spi_device *spi)
	434	{
f0fba2ad LG	435	snd_soc_unregister_codec(&spi->dev);
f0fba2ad LG	436	kfree(spi_get_drvdata(spi));
08aff8cd MB	437	return 0;
	438	}
	439
08aff8cd MB	440	static struct spi_driver wm8711_spi_driver = {
08aff8cd MB	441	.driver = {
0473e61b	442	.name = "wm8711",
08aff8cd	443	.owner = THIS_MODULE,
1552c8f6	444	.of_match_table = wm8711_of_match,
08aff8cd MB	445	},
08aff8cd MB	446	.probe = wm8711_spi_probe,
08aff8cd MB	447	.remove = __devexit_p(wm8711_spi_remove),
	448	};
	449	#endif /* CONFIG_SPI_MASTER */
	450
318b0b8d	451	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
f0fba2ad	452	static __devinit int wm8711_i2c_probe(struct i2c_client *client,
318b0b8d	453	const struct i2c_device_id *id)
bd6d4177	454	{
bd6d4177	455	struct wm8711_priv *wm8711;
f0fba2ad	456	int ret;
bd6d4177 MA	457
bd6d4177 MA	458	wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
318b0b8d	459	if (wm8711 == NULL)
bd6d4177	460	return -ENOMEM;
bd6d4177	461
f0fba2ad	462	i2c_set_clientdata(client, wm8711);
f0fba2ad	463	wm8711->bus_type = SND_SOC_I2C;
bd6d4177	464
f0fba2ad LG	465	ret = snd_soc_register_codec(&client->dev,
	466	&soc_codec_dev_wm8711, &wm8711_dai, 1);
	467	if (ret < 0)
	468	kfree(wm8711);
	469	return ret;
318b0b8d	470	}
bd6d4177	471
318b0b8d MB	472	static __devexit int wm8711_i2c_remove(struct i2c_client *client)
318b0b8d MB	473	{
f0fba2ad LG	474	snd_soc_unregister_codec(&client->dev);
f0fba2ad LG	475	kfree(i2c_get_clientdata(client));
bd6d4177 MA	476	return 0;
	477	}
	478
318b0b8d MB	479	static const struct i2c_device_id wm8711_i2c_id[] = {
	480	{ "wm8711", 0 },
	481	{ }
bd6d4177	482	};
318b0b8d MB	483	MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
	484
	485	static struct i2c_driver wm8711_i2c_driver = {
	486	.driver = {
0473e61b	487	.name = "wm8711",
318b0b8d	488	.owner = THIS_MODULE,
1552c8f6	489	.of_match_table = wm8711_of_match,
318b0b8d MB	490	},
	491	.probe = wm8711_i2c_probe,
	492	.remove = __devexit_p(wm8711_i2c_remove),
	493	.id_table = wm8711_i2c_id,
	494	};
	495	#endif
bd6d4177 MA	496
	497	static int __init wm8711_modinit(void)
	498	{
318b0b8d MB	499	int ret;
	500	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	501	ret = i2c_add_driver(&wm8711_i2c_driver);
	502	if (ret != 0) {
	503	printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
	504	ret);
	505	}
08aff8cd MB	506	#endif
08aff8cd MB	507	#if defined(CONFIG_SPI_MASTER)
bb262767	508	ret = spi_register_driver(&wm8711_spi_driver);
08aff8cd	509	if (ret != 0) {
bb262767	510	printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
08aff8cd MB	511	ret);
08aff8cd MB	512	}
318b0b8d MB	513	#endif
318b0b8d MB	514	return 0;
bd6d4177 MA	515	}
	516	module_init(wm8711_modinit);
	517
	518	static void __exit wm8711_exit(void)
	519	{
318b0b8d MB	520	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	521	i2c_del_driver(&wm8711_i2c_driver);
	522	#endif
08aff8cd	523	#if defined(CONFIG_SPI_MASTER)
bb262767	524	spi_unregister_driver(&wm8711_spi_driver);
08aff8cd	525	#endif
bd6d4177 MA	526	}
	527	module_exit(wm8711_exit);
	528
	529	MODULE_DESCRIPTION("ASoC WM8711 driver");
	530	MODULE_AUTHOR("Mike Arthur");
	531	MODULE_LICENSE("GPL");