[deliverable/linux.git] / sound / soc / codecs / wm8776.c

/*
 * wm8776.c  --  WM8776 ALSA SoC Audio driver
 *
 * Copyright 2009 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 * 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.
 *
 * TODO: Input ALC/limiter support
 */

#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/of_device.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include "wm8776.h"

/* codec private data */
struct wm8776_priv {
	enum snd_soc_control_type control_type;
	int sysclk[2];
};

static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
	0x79, 0x79, 0x79, 0xff, 0xff,  /* 4 */
	0xff, 0x00, 0x90, 0x00, 0x00,  /* 9 */
	0x22, 0x22, 0x22, 0x08, 0xcf,  /* 14 */
	0xcf, 0x7b, 0x00, 0x32, 0x00,  /* 19 */
	0xa6, 0x01, 0x01
};

static int wm8776_reset(struct snd_soc_codec *codec)
{
	return snd_soc_write(codec, WM8776_RESET, 0);
}

static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);

static const struct snd_kcontrol_new wm8776_snd_controls[] = {
SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
		 0, 127, 0, hp_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
		 0, 255, 0, dac_tlv),
SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),

SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),

SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
		 0, 255, 0, adc_tlv),
SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
};

static const struct snd_kcontrol_new inmix_controls[] = {
SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
};

static const struct snd_kcontrol_new outmix_controls[] = {
SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
};

static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("AUX"),

SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
SND_SOC_DAPM_INPUT("AIN3"),
SND_SOC_DAPM_INPUT("AIN4"),
SND_SOC_DAPM_INPUT("AIN5"),

SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
		   inmix_controls, ARRAY_SIZE(inmix_controls)),

SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),

SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
		   outmix_controls, ARRAY_SIZE(outmix_controls)),

SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),

SND_SOC_DAPM_OUTPUT("VOUT"),

SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
};

static const struct snd_soc_dapm_route routes[] = {
	{ "Input Mixer", "AIN1 Switch", "AIN1" },
	{ "Input Mixer", "AIN2 Switch", "AIN2" },
	{ "Input Mixer", "AIN3 Switch", "AIN3" },
	{ "Input Mixer", "AIN4 Switch", "AIN4" },
	{ "Input Mixer", "AIN5 Switch", "AIN5" },

	{ "ADC", NULL, "Input Mixer" },

	{ "Output Mixer", "DAC Switch", "DAC" },
	{ "Output Mixer", "AUX Switch", "AUX" },
	{ "Output Mixer", "Bypass Switch", "Input Mixer" },

	{ "VOUT", NULL, "Output Mixer" },

	{ "Headphone PGA", NULL, "Output Mixer" },

	{ "HPOUTL", NULL, "Headphone PGA" },
	{ "HPOUTR", NULL, "Headphone PGA" },
};

static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
	struct snd_soc_codec *codec = dai->codec;
	int reg, iface, master;

	switch (dai->driver->id) {
	case WM8776_DAI_DAC:
		reg = WM8776_DACIFCTRL;
		master = 0x80;
		break;
	case WM8776_DAI_ADC:
		reg = WM8776_ADCIFCTRL;
		master = 0x100;
		break;
	default:
		return -EINVAL;
	}

	iface = 0;

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
		master = 0;
		break;
	default:
		return -EINVAL;
	}

	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;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	case SND_SOC_DAIFMT_NB_NF:
		break;
	case SND_SOC_DAIFMT_IB_IF:
		iface |= 0x00c;
		break;
	case SND_SOC_DAIFMT_IB_NF:
		iface |= 0x008;
		break;
	case SND_SOC_DAIFMT_NB_IF:
		iface |= 0x004;
		break;
	default:
		return -EINVAL;
	}

	/* Finally, write out the values */
	snd_soc_update_bits(codec, reg, 0xf, iface);
	snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);

	return 0;
}

static int mclk_ratios[] = {
	128,
	192,
	256,
	384,
	512,
	768,
};

static int wm8776_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 wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
	int iface_reg, iface;
	int ratio_shift, master;
	int i;

	switch (dai->driver->id) {
	case WM8776_DAI_DAC:
		iface_reg = WM8776_DACIFCTRL;
		master = 0x80;
		ratio_shift = 4;
		break;
	case WM8776_DAI_ADC:
		iface_reg = WM8776_ADCIFCTRL;
		master = 0x100;
		ratio_shift = 0;
		break;
	default:
		return -EINVAL;
	}

	/* Set word length */
	switch (snd_pcm_format_width(params_format(params))) {
	case 16:
		iface = 0;
		break;
	case 20:
		iface = 0x10;
		break;
	case 24:
		iface = 0x20;
		break;
	case 32:
		iface = 0x30;
		break;
	default:
		dev_err(codec->dev, "Unsupported sample size: %i\n",
			snd_pcm_format_width(params_format(params)));
		return -EINVAL;
	}

	/* Only need to set MCLK/LRCLK ratio if we're master */
	if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
		for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
			if (wm8776->sysclk[dai->driver->id] / params_rate(params)
			    == mclk_ratios[i])
				break;
		}

		if (i == ARRAY_SIZE(mclk_ratios)) {
			dev_err(codec->dev,
				"Unable to configure MCLK ratio %d/%d\n",
				wm8776->sysclk[dai->driver->id], params_rate(params));
			return -EINVAL;
		}

		dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);

		snd_soc_update_bits(codec, WM8776_MSTRCTRL,
				    0x7 << ratio_shift, i << ratio_shift);
	} else {
		dev_dbg(codec->dev, "DAI in slave mode\n");
	}

	snd_soc_update_bits(codec, iface_reg, 0x30, iface);

	return 0;
}

static int wm8776_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;

	return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
}

static int wm8776_set_sysclk(struct snd_soc_dai *dai,
			     int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = dai->codec;
	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);

	BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));

	wm8776->sysclk[dai->driver->id] = freq;

	return 0;
}

static int wm8776_set_bias_level(struct snd_soc_codec *codec,
				 enum snd_soc_bias_level level)
{
	switch (level) {
	case SND_SOC_BIAS_ON:
		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);

			/* Disable the global powerdown; DAPM does the rest */
			snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
		}

		break;
	case SND_SOC_BIAS_OFF:
		snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
		break;
	}

	codec->dapm.bias_level = level;
	return 0;
}

#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dai_ops wm8776_dac_ops = {
	.digital_mute	= wm8776_mute,
	.hw_params      = wm8776_hw_params,
	.set_fmt        = wm8776_set_fmt,
	.set_sysclk     = wm8776_set_sysclk,
};

static const struct snd_soc_dai_ops wm8776_adc_ops = {
	.hw_params      = wm8776_hw_params,
	.set_fmt        = wm8776_set_fmt,
	.set_sysclk     = wm8776_set_sysclk,
};

static struct snd_soc_dai_driver wm8776_dai[] = {
	{
		.name = "wm8776-hifi-playback",
		.id	= WM8776_DAI_DAC,
		.playback = {
			.stream_name = "Playback",
			.channels_min = 2,
			.channels_max = 2,
			.rates = SNDRV_PCM_RATE_CONTINUOUS,
			.rate_min = 32000,
			.rate_max = 192000,
			.formats = WM8776_FORMATS,
		},
		.ops = &wm8776_dac_ops,
	},
	{
		.name = "wm8776-hifi-capture",
		.id	= WM8776_DAI_ADC,
		.capture = {
			.stream_name = "Capture",
			.channels_min = 2,
			.channels_max = 2,
			.rates = SNDRV_PCM_RATE_CONTINUOUS,
			.rate_min = 32000,
			.rate_max = 96000,
			.formats = WM8776_FORMATS,
		},
		.ops = &wm8776_adc_ops,
	},
};

#ifdef CONFIG_PM
static int wm8776_suspend(struct snd_soc_codec *codec)
{
	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);

	return 0;
}

static int wm8776_resume(struct snd_soc_codec *codec)
{
	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	return 0;
}
#else
#define wm8776_suspend NULL
#define wm8776_resume NULL
#endif

static int wm8776_probe(struct snd_soc_codec *codec)
{
	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
	int ret = 0;

	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
		return ret;
	}

	ret = wm8776_reset(codec);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
		return ret;
	}

	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

	/* Latch the update bits; right channel only since we always
	 * update both. */
	snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
	snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);

	return ret;
}

/* power down chip */
static int wm8776_remove(struct snd_soc_codec *codec)
{
	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
	.probe = 	wm8776_probe,
	.remove = 	wm8776_remove,
	.suspend = 	wm8776_suspend,
	.resume =	wm8776_resume,
	.set_bias_level = wm8776_set_bias_level,
	.reg_cache_size = ARRAY_SIZE(wm8776_reg),
	.reg_word_size = sizeof(u16),
	.reg_cache_default = wm8776_reg,

	.controls = wm8776_snd_controls,
	.num_controls = ARRAY_SIZE(wm8776_snd_controls),
	.dapm_widgets = wm8776_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
	.dapm_routes = routes,
	.num_dapm_routes = ARRAY_SIZE(routes),
};

static const struct of_device_id wm8776_of_match[] = {
	{ .compatible = "wlf,wm8776", },
	{ }
};
MODULE_DEVICE_TABLE(of, wm8776_of_match);

#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8776_spi_probe(struct spi_device *spi)
{
	struct wm8776_priv *wm8776;
	int ret;

	wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
			      GFP_KERNEL);
	if (wm8776 == NULL)
		return -ENOMEM;

	wm8776->control_type = SND_SOC_SPI;
	spi_set_drvdata(spi, wm8776);

	ret = snd_soc_register_codec(&spi->dev,
			&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));

	return ret;
}

static int __devexit wm8776_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	return 0;
}

static struct spi_driver wm8776_spi_driver = {
	.driver = {
		.name	= "wm8776",
		.owner	= THIS_MODULE,
		.of_match_table = wm8776_of_match,
	},
	.probe		= wm8776_spi_probe,
	.remove		= __devexit_p(wm8776_spi_remove),
};
#endif /* CONFIG_SPI_MASTER */

#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
				      const struct i2c_device_id *id)
{
	struct wm8776_priv *wm8776;
	int ret;

	wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
			      GFP_KERNEL);
	if (wm8776 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, wm8776);
	wm8776->control_type = SND_SOC_I2C;

	ret =  snd_soc_register_codec(&i2c->dev,
			&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));

	return ret;
}

static __devexit int wm8776_i2c_remove(struct i2c_client *client)
{
	snd_soc_unregister_codec(&client->dev);
	return 0;
}

static const struct i2c_device_id wm8776_i2c_id[] = {
	{ "wm8776", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);

static struct i2c_driver wm8776_i2c_driver = {
	.driver = {
		.name = "wm8776",
		.owner = THIS_MODULE,
		.of_match_table = wm8776_of_match,
	},
	.probe =    wm8776_i2c_probe,
	.remove =   __devexit_p(wm8776_i2c_remove),
	.id_table = wm8776_i2c_id,
};
#endif

static int __init wm8776_modinit(void)
{
	int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	ret = i2c_add_driver(&wm8776_i2c_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
		       ret);
	}
#endif
#if defined(CONFIG_SPI_MASTER)
	ret = spi_register_driver(&wm8776_spi_driver);
	if (ret != 0) {
		printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
		       ret);
	}
#endif
	return ret;
}
module_init(wm8776_modinit);

static void __exit wm8776_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
	i2c_del_driver(&wm8776_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
	spi_unregister_driver(&wm8776_spi_driver);
#endif
}
module_exit(wm8776_exit);

MODULE_DESCRIPTION("ASoC WM8776 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
924914ee MB	1	/*
	2	* wm8776.c -- WM8776 ALSA SoC Audio driver
	3	*
	4	* Copyright 2009 Wolfson Microelectronics plc
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	* TODO: Input ALC/limiter support
	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>
b6de4315	21	#include <linux/of_device.h>
924914ee	22	#include <linux/spi/spi.h>
5a0e3ad6	23	#include <linux/slab.h>
924914ee MB	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/pcm_params.h>
	27	#include <sound/soc.h>
924914ee MB	28	#include <sound/initval.h>
	29	#include <sound/tlv.h>
	30
	31	#include "wm8776.h"
	32
924914ee MB	33	/* codec private data */
924914ee MB	34	struct wm8776_priv {
f0fba2ad	35	enum snd_soc_control_type control_type;
924914ee MB	36	int sysclk[2];
	37	};
	38
924914ee MB	39	static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
	40	0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */
	41	0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */
	42	0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */
	43	0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */
	44	0xa6, 0x01, 0x01
	45	};
	46
924914ee MB	47	static int wm8776_reset(struct snd_soc_codec *codec)
924914ee MB	48	{
35b1207b	49	return snd_soc_write(codec, WM8776_RESET, 0);
924914ee MB	50	}
	51
	52	static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
	53	static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
	54	static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
	55
	56	static const struct snd_kcontrol_new wm8776_snd_controls[] = {
	57	SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
	58	0, 127, 0, hp_tlv),
	59	SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
	60	0, 255, 0, dac_tlv),
	61	SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
	62
	63	SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
	64
	65	SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
	66	0, 255, 0, adc_tlv),
	67	SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
	68	SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
	69	SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
	70	};
	71
	72	static const struct snd_kcontrol_new inmix_controls[] = {
	73	SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
	74	SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
	75	SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
	76	SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
	77	SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
	78	};
	79
	80	static const struct snd_kcontrol_new outmix_controls[] = {
	81	SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
	82	SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
	83	SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
	84	};
	85
	86	static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
	87	SND_SOC_DAPM_INPUT("AUX"),
924914ee MB	88
	89	SND_SOC_DAPM_INPUT("AIN1"),
	90	SND_SOC_DAPM_INPUT("AIN2"),
	91	SND_SOC_DAPM_INPUT("AIN3"),
	92	SND_SOC_DAPM_INPUT("AIN4"),
	93	SND_SOC_DAPM_INPUT("AIN5"),
	94
	95	SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
	96	inmix_controls, ARRAY_SIZE(inmix_controls)),
	97
	98	SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
	99	SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
	100
	101	SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
	102	outmix_controls, ARRAY_SIZE(outmix_controls)),
	103
	104	SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
	105
	106	SND_SOC_DAPM_OUTPUT("VOUT"),
	107
	108	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	109	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	110	};
	111
	112	static const struct snd_soc_dapm_route routes[] = {
	113	{ "Input Mixer", "AIN1 Switch", "AIN1" },
	114	{ "Input Mixer", "AIN2 Switch", "AIN2" },
	115	{ "Input Mixer", "AIN3 Switch", "AIN3" },
	116	{ "Input Mixer", "AIN4 Switch", "AIN4" },
	117	{ "Input Mixer", "AIN5 Switch", "AIN5" },
	118
	119	{ "ADC", NULL, "Input Mixer" },
	120
	121	{ "Output Mixer", "DAC Switch", "DAC" },
	122	{ "Output Mixer", "AUX Switch", "AUX" },
	123	{ "Output Mixer", "Bypass Switch", "Input Mixer" },
	124
	125	{ "VOUT", NULL, "Output Mixer" },
	126
	127	{ "Headphone PGA", NULL, "Output Mixer" },
	128
	129	{ "HPOUTL", NULL, "Headphone PGA" },
	130	{ "HPOUTR", NULL, "Headphone PGA" },
	131	};
	132
	133	static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	134	{
	135	struct snd_soc_codec *codec = dai->codec;
	136	int reg, iface, master;
	137
f0fba2ad	138	switch (dai->driver->id) {
924914ee MB	139	case WM8776_DAI_DAC:
	140	reg = WM8776_DACIFCTRL;
	141	master = 0x80;
	142	break;
	143	case WM8776_DAI_ADC:
	144	reg = WM8776_ADCIFCTRL;
	145	master = 0x100;
	146	break;
	147	default:
	148	return -EINVAL;
	149	}
	150
	151	iface = 0;
	152
	153	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	154	case SND_SOC_DAIFMT_CBM_CFM:
	155	break;
	156	case SND_SOC_DAIFMT_CBS_CFS:
	157	master = 0;
	158	break;
	159	default:
	160	return -EINVAL;
	161	}
	162
	163	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	164	case SND_SOC_DAIFMT_I2S:
	165	iface \|= 0x0002;
	166	break;
	167	case SND_SOC_DAIFMT_RIGHT_J:
	168	break;
	169	case SND_SOC_DAIFMT_LEFT_J:
	170	iface \|= 0x0001;
	171	break;
924914ee MB	172	default:
	173	return -EINVAL;
	174	}
	175
	176	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	177	case SND_SOC_DAIFMT_NB_NF:
	178	break;
	179	case SND_SOC_DAIFMT_IB_IF:
	180	iface \|= 0x00c;
	181	break;
	182	case SND_SOC_DAIFMT_IB_NF:
	183	iface \|= 0x008;
	184	break;
	185	case SND_SOC_DAIFMT_NB_IF:
	186	iface \|= 0x004;
	187	break;
	188	default:
	189	return -EINVAL;
	190	}
	191
	192	/* Finally, write out the values */
	193	snd_soc_update_bits(codec, reg, 0xf, iface);
	194	snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);
	195
	196	return 0;
	197	}
	198
	199	static int mclk_ratios[] = {
	200	128,
	201	192,
	202	256,
	203	384,
	204	512,
	205	768,
	206	};
	207
	208	static int wm8776_hw_params(struct snd_pcm_substream *substream,
	209	struct snd_pcm_hw_params *params,
	210	struct snd_soc_dai *dai)
	211	{
	212	struct snd_soc_codec *codec = dai->codec;
b2c812e2	213	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee MB	214	int iface_reg, iface;
	215	int ratio_shift, master;
	216	int i;
	217
f0fba2ad	218	switch (dai->driver->id) {
924914ee MB	219	case WM8776_DAI_DAC:
	220	iface_reg = WM8776_DACIFCTRL;
	221	master = 0x80;
	222	ratio_shift = 4;
	223	break;
	224	case WM8776_DAI_ADC:
	225	iface_reg = WM8776_ADCIFCTRL;
	226	master = 0x100;
	227	ratio_shift = 0;
	228	break;
	229	default:
	230	return -EINVAL;
	231	}
	232
924914ee	233	/* Set word length */
d1dc698a TT	234	switch (snd_pcm_format_width(params_format(params))) {
	235	case 16:
	236	iface = 0;
990fc3d0	237	break;
d1dc698a TT	238	case 20:
d1dc698a TT	239	iface = 0x10;
924914ee	240	break;
d1dc698a TT	241	case 24:
d1dc698a TT	242	iface = 0x20;
924914ee	243	break;
d1dc698a TT	244	case 32:
d1dc698a TT	245	iface = 0x30;
924914ee	246	break;
d1dc698a TT	247	default:
	248	dev_err(codec->dev, "Unsupported sample size: %i\n",
	249	snd_pcm_format_width(params_format(params)));
	250	return -EINVAL;
924914ee MB	251	}
	252
	253	/* Only need to set MCLK/LRCLK ratio if we're master */
	254	if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
	255	for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
f0fba2ad	256	if (wm8776->sysclk[dai->driver->id] / params_rate(params)
924914ee MB	257	== mclk_ratios[i])
	258	break;
	259	}
	260
	261	if (i == ARRAY_SIZE(mclk_ratios)) {
	262	dev_err(codec->dev,
	263	"Unable to configure MCLK ratio %d/%d\n",
f0fba2ad	264	wm8776->sysclk[dai->driver->id], params_rate(params));
924914ee MB	265	return -EINVAL;
	266	}
	267
	268	dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
	269
	270	snd_soc_update_bits(codec, WM8776_MSTRCTRL,
	271	0x7 << ratio_shift, i << ratio_shift);
	272	} else {
	273	dev_dbg(codec->dev, "DAI in slave mode\n");
	274	}
	275
	276	snd_soc_update_bits(codec, iface_reg, 0x30, iface);
	277
	278	return 0;
	279	}
	280
	281	static int wm8776_mute(struct snd_soc_dai *dai, int mute)
	282	{
	283	struct snd_soc_codec *codec = dai->codec;
	284
	285	return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
	286	}
	287
	288	static int wm8776_set_sysclk(struct snd_soc_dai *dai,
	289	int clk_id, unsigned int freq, int dir)
	290	{
	291	struct snd_soc_codec *codec = dai->codec;
b2c812e2	292	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee	293
f0fba2ad	294	BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));
924914ee	295
f0fba2ad	296	wm8776->sysclk[dai->driver->id] = freq;
924914ee MB	297
	298	return 0;
	299	}
	300
	301	static int wm8776_set_bias_level(struct snd_soc_codec *codec,
	302	enum snd_soc_bias_level level)
	303	{
	304	switch (level) {
	305	case SND_SOC_BIAS_ON:
	306	break;
	307	case SND_SOC_BIAS_PREPARE:
	308	break;
	309	case SND_SOC_BIAS_STANDBY:
ce6120cc	310	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
abe11d0a AL	311	snd_soc_cache_sync(codec);
abe11d0a AL	312
924914ee MB	313	/* Disable the global powerdown; DAPM does the rest */
	314	snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
	315	}
	316
	317	break;
	318	case SND_SOC_BIAS_OFF:
	319	snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
	320	break;
	321	}
	322
ce6120cc	323	codec->dapm.bias_level = level;
924914ee MB	324	return 0;
	325	}
	326
924914ee MB	327	#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	328	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S32_LE)
	329
85e7652d	330	static const struct snd_soc_dai_ops wm8776_dac_ops = {
924914ee MB	331	.digital_mute = wm8776_mute,
	332	.hw_params = wm8776_hw_params,
	333	.set_fmt = wm8776_set_fmt,
	334	.set_sysclk = wm8776_set_sysclk,
	335	};
	336
85e7652d	337	static const struct snd_soc_dai_ops wm8776_adc_ops = {
924914ee MB	338	.hw_params = wm8776_hw_params,
	339	.set_fmt = wm8776_set_fmt,
	340	.set_sysclk = wm8776_set_sysclk,
	341	};
	342
f0fba2ad	343	static struct snd_soc_dai_driver wm8776_dai[] = {
924914ee	344	{
f0fba2ad LG	345	.name = "wm8776-hifi-playback",
f0fba2ad LG	346	.id = WM8776_DAI_DAC,
924914ee MB	347	.playback = {
	348	.stream_name = "Playback",
	349	.channels_min = 2,
	350	.channels_max = 2,
0016226d TT	351	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	352	.rate_min = 32000,
	353	.rate_max = 192000,
924914ee MB	354	.formats = WM8776_FORMATS,
	355	},
	356	.ops = &wm8776_dac_ops,
	357	},
	358	{
f0fba2ad LG	359	.name = "wm8776-hifi-capture",
f0fba2ad LG	360	.id = WM8776_DAI_ADC,
924914ee MB	361	.capture = {
	362	.stream_name = "Capture",
	363	.channels_min = 2,
	364	.channels_max = 2,
0016226d TT	365	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	366	.rate_min = 32000,
	367	.rate_max = 96000,
924914ee MB	368	.formats = WM8776_FORMATS,
	369	},
	370	.ops = &wm8776_adc_ops,
	371	},
	372	};
924914ee MB	373
924914ee MB	374	#ifdef CONFIG_PM
84b315ee	375	static int wm8776_suspend(struct snd_soc_codec *codec)
924914ee	376	{
924914ee MB	377	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
	378
	379	return 0;
	380	}
	381
f0fba2ad	382	static int wm8776_resume(struct snd_soc_codec *codec)
924914ee	383	{
924914ee	384	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
924914ee MB	385	return 0;
	386	}
	387	#else
	388	#define wm8776_suspend NULL
	389	#define wm8776_resume NULL
	390	#endif
	391
f0fba2ad	392	static int wm8776_probe(struct snd_soc_codec *codec)
924914ee	393	{
f0fba2ad	394	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee MB	395	int ret = 0;
924914ee MB	396
f0fba2ad LG	397	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
	398	if (ret < 0) {
	399	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	400	return ret;
924914ee MB	401	}
924914ee MB	402
f0fba2ad	403	ret = wm8776_reset(codec);
924914ee	404	if (ret < 0) {
f0fba2ad LG	405	dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
f0fba2ad LG	406	return ret;
924914ee MB	407	}
924914ee MB	408
f0fba2ad LG	409	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	410
	411	/* Latch the update bits; right channel only since we always
	412	* update both. */
	413	snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
	414	snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
	415
924914ee	416	return ret;
924914ee MB	417	}
	418
	419	/* power down chip */
f0fba2ad	420	static int wm8776_remove(struct snd_soc_codec *codec)
924914ee	421	{
f0fba2ad	422	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
924914ee MB	423	return 0;
	424	}
	425
f0fba2ad	426	static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
924914ee MB	427	.probe = wm8776_probe,
	428	.remove = wm8776_remove,
	429	.suspend = wm8776_suspend,
	430	.resume = wm8776_resume,
f0fba2ad	431	.set_bias_level = wm8776_set_bias_level,
e5eec34c	432	.reg_cache_size = ARRAY_SIZE(wm8776_reg),
f0fba2ad LG	433	.reg_word_size = sizeof(u16),
f0fba2ad LG	434	.reg_cache_default = wm8776_reg,
1db3c98e MB	435
	436	.controls = wm8776_snd_controls,
	437	.num_controls = ARRAY_SIZE(wm8776_snd_controls),
	438	.dapm_widgets = wm8776_dapm_widgets,
	439	.num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
	440	.dapm_routes = routes,
	441	.num_dapm_routes = ARRAY_SIZE(routes),
924914ee	442	};
924914ee	443
b6de4315 MB	444	static const struct of_device_id wm8776_of_match[] = {
	445	{ .compatible = "wlf,wm8776", },
	446	{ }
	447	};
	448	MODULE_DEVICE_TABLE(of, wm8776_of_match);
	449
924914ee	450	#if defined(CONFIG_SPI_MASTER)
924914ee MB	451	static int __devinit wm8776_spi_probe(struct spi_device *spi)
924914ee MB	452	{
924914ee	453	struct wm8776_priv *wm8776;
f0fba2ad	454	int ret;
924914ee	455
bf97ca9a MB	456	wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
bf97ca9a MB	457	GFP_KERNEL);
924914ee MB	458	if (wm8776 == NULL)
	459	return -ENOMEM;
	460
f0fba2ad LG	461	wm8776->control_type = SND_SOC_SPI;
f0fba2ad LG	462	spi_set_drvdata(spi, wm8776);
924914ee	463
f0fba2ad LG	464	ret = snd_soc_register_codec(&spi->dev,
f0fba2ad LG	465	&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
bf97ca9a	466
f0fba2ad	467	return ret;
924914ee MB	468	}
	469
	470	static int __devexit wm8776_spi_remove(struct spi_device *spi)
	471	{
f0fba2ad	472	snd_soc_unregister_codec(&spi->dev);
924914ee MB	473	return 0;
	474	}
	475
924914ee MB	476	static struct spi_driver wm8776_spi_driver = {
924914ee MB	477	.driver = {
1e3ad571	478	.name = "wm8776",
924914ee	479	.owner = THIS_MODULE,
b6de4315	480	.of_match_table = wm8776_of_match,
924914ee MB	481	},
924914ee MB	482	.probe = wm8776_spi_probe,
924914ee MB	483	.remove = __devexit_p(wm8776_spi_remove),
	484	};
	485	#endif /* CONFIG_SPI_MASTER */
	486
	487	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	488	static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
	489	const struct i2c_device_id *id)
	490	{
	491	struct wm8776_priv *wm8776;
f0fba2ad	492	int ret;
924914ee	493
bf97ca9a MB	494	wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
bf97ca9a MB	495	GFP_KERNEL);
924914ee MB	496	if (wm8776 == NULL)
	497	return -ENOMEM;
	498
924914ee	499	i2c_set_clientdata(i2c, wm8776);
f0fba2ad	500	wm8776->control_type = SND_SOC_I2C;
924914ee	501
f0fba2ad LG	502	ret = snd_soc_register_codec(&i2c->dev,
f0fba2ad LG	503	&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
bf97ca9a	504
f0fba2ad	505	return ret;
924914ee MB	506	}
	507
	508	static __devexit int wm8776_i2c_remove(struct i2c_client *client)
	509	{
f0fba2ad	510	snd_soc_unregister_codec(&client->dev);
924914ee MB	511	return 0;
	512	}
	513
924914ee MB	514	static const struct i2c_device_id wm8776_i2c_id[] = {
	515	{ "wm8776", 0 },
	516	{ }
	517	};
	518	MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
	519
	520	static struct i2c_driver wm8776_i2c_driver = {
	521	.driver = {
1e3ad571	522	.name = "wm8776",
924914ee	523	.owner = THIS_MODULE,
b6de4315	524	.of_match_table = wm8776_of_match,
924914ee MB	525	},
	526	.probe = wm8776_i2c_probe,
	527	.remove = __devexit_p(wm8776_i2c_remove),
924914ee MB	528	.id_table = wm8776_i2c_id,
	529	};
	530	#endif
	531
	532	static int __init wm8776_modinit(void)
	533	{
f0fba2ad	534	int ret = 0;
924914ee MB	535	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	536	ret = i2c_add_driver(&wm8776_i2c_driver);
	537	if (ret != 0) {
f0fba2ad	538	printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
924914ee MB	539	ret);
	540	}
	541	#endif
	542	#if defined(CONFIG_SPI_MASTER)
	543	ret = spi_register_driver(&wm8776_spi_driver);
	544	if (ret != 0) {
f0fba2ad	545	printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
924914ee MB	546	ret);
	547	}
	548	#endif
f0fba2ad	549	return ret;
924914ee MB	550	}
	551	module_init(wm8776_modinit);
	552
	553	static void __exit wm8776_exit(void)
	554	{
	555	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	556	i2c_del_driver(&wm8776_i2c_driver);
	557	#endif
	558	#if defined(CONFIG_SPI_MASTER)
	559	spi_unregister_driver(&wm8776_spi_driver);
	560	#endif
	561	}
	562	module_exit(wm8776_exit);
	563
	564	MODULE_DESCRIPTION("ASoC WM8776 driver");
	565	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	566	MODULE_LICENSE("GPL");