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

/*
 * wm8776.c  --  WM8776 ALSA SoC Audio driver
 *
 * Copyright 2009-12 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"

enum wm8776_chip_type {
	WM8775 = 1,
	WM8776,
};

/* 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[] = {
	{ "wm8775", WM8775 },
	{ "wm8776", WM8776 },
	{ }
};
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	*
656baaeb	4	* Copyright 2009-12 Wolfson Microelectronics plc
924914ee MB	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
fdd48f9d MB	33	enum wm8776_chip_type {
	34	WM8775 = 1,
	35	WM8776,
	36	};
	37
924914ee MB	38	/* codec private data */
924914ee MB	39	struct wm8776_priv {
f0fba2ad	40	enum snd_soc_control_type control_type;
924914ee MB	41	int sysclk[2];
	42	};
	43
924914ee MB	44	static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
	45	0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */
	46	0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */
	47	0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */
	48	0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */
	49	0xa6, 0x01, 0x01
	50	};
	51
924914ee MB	52	static int wm8776_reset(struct snd_soc_codec *codec)
924914ee MB	53	{
35b1207b	54	return snd_soc_write(codec, WM8776_RESET, 0);
924914ee MB	55	}
	56
	57	static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
	58	static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
	59	static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
	60
	61	static const struct snd_kcontrol_new wm8776_snd_controls[] = {
	62	SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
	63	0, 127, 0, hp_tlv),
	64	SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
	65	0, 255, 0, dac_tlv),
	66	SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
	67
	68	SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
	69
	70	SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
	71	0, 255, 0, adc_tlv),
	72	SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
	73	SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
	74	SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
	75	};
	76
	77	static const struct snd_kcontrol_new inmix_controls[] = {
	78	SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
	79	SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
	80	SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
	81	SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
	82	SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
	83	};
	84
	85	static const struct snd_kcontrol_new outmix_controls[] = {
	86	SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
	87	SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
	88	SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
	89	};
	90
	91	static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
	92	SND_SOC_DAPM_INPUT("AUX"),
924914ee MB	93
	94	SND_SOC_DAPM_INPUT("AIN1"),
	95	SND_SOC_DAPM_INPUT("AIN2"),
	96	SND_SOC_DAPM_INPUT("AIN3"),
	97	SND_SOC_DAPM_INPUT("AIN4"),
	98	SND_SOC_DAPM_INPUT("AIN5"),
	99
	100	SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
	101	inmix_controls, ARRAY_SIZE(inmix_controls)),
	102
	103	SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
	104	SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
	105
	106	SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
	107	outmix_controls, ARRAY_SIZE(outmix_controls)),
	108
	109	SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
	110
	111	SND_SOC_DAPM_OUTPUT("VOUT"),
	112
	113	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	114	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	115	};
	116
	117	static const struct snd_soc_dapm_route routes[] = {
	118	{ "Input Mixer", "AIN1 Switch", "AIN1" },
	119	{ "Input Mixer", "AIN2 Switch", "AIN2" },
	120	{ "Input Mixer", "AIN3 Switch", "AIN3" },
	121	{ "Input Mixer", "AIN4 Switch", "AIN4" },
	122	{ "Input Mixer", "AIN5 Switch", "AIN5" },
	123
	124	{ "ADC", NULL, "Input Mixer" },
	125
	126	{ "Output Mixer", "DAC Switch", "DAC" },
	127	{ "Output Mixer", "AUX Switch", "AUX" },
	128	{ "Output Mixer", "Bypass Switch", "Input Mixer" },
	129
	130	{ "VOUT", NULL, "Output Mixer" },
	131
	132	{ "Headphone PGA", NULL, "Output Mixer" },
	133
	134	{ "HPOUTL", NULL, "Headphone PGA" },
	135	{ "HPOUTR", NULL, "Headphone PGA" },
	136	};
	137
	138	static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
	139	{
	140	struct snd_soc_codec *codec = dai->codec;
	141	int reg, iface, master;
	142
f0fba2ad	143	switch (dai->driver->id) {
924914ee MB	144	case WM8776_DAI_DAC:
	145	reg = WM8776_DACIFCTRL;
	146	master = 0x80;
	147	break;
	148	case WM8776_DAI_ADC:
	149	reg = WM8776_ADCIFCTRL;
	150	master = 0x100;
	151	break;
	152	default:
	153	return -EINVAL;
	154	}
	155
	156	iface = 0;
	157
	158	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	159	case SND_SOC_DAIFMT_CBM_CFM:
	160	break;
	161	case SND_SOC_DAIFMT_CBS_CFS:
	162	master = 0;
	163	break;
	164	default:
	165	return -EINVAL;
	166	}
	167
	168	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	169	case SND_SOC_DAIFMT_I2S:
	170	iface \|= 0x0002;
	171	break;
	172	case SND_SOC_DAIFMT_RIGHT_J:
	173	break;
	174	case SND_SOC_DAIFMT_LEFT_J:
	175	iface \|= 0x0001;
	176	break;
924914ee MB	177	default:
	178	return -EINVAL;
	179	}
	180
	181	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	182	case SND_SOC_DAIFMT_NB_NF:
	183	break;
	184	case SND_SOC_DAIFMT_IB_IF:
	185	iface \|= 0x00c;
	186	break;
	187	case SND_SOC_DAIFMT_IB_NF:
	188	iface \|= 0x008;
	189	break;
	190	case SND_SOC_DAIFMT_NB_IF:
	191	iface \|= 0x004;
	192	break;
	193	default:
	194	return -EINVAL;
	195	}
	196
	197	/* Finally, write out the values */
	198	snd_soc_update_bits(codec, reg, 0xf, iface);
	199	snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);
	200
	201	return 0;
	202	}
	203
	204	static int mclk_ratios[] = {
	205	128,
	206	192,
	207	256,
	208	384,
	209	512,
	210	768,
	211	};
	212
	213	static int wm8776_hw_params(struct snd_pcm_substream *substream,
	214	struct snd_pcm_hw_params *params,
	215	struct snd_soc_dai *dai)
	216	{
	217	struct snd_soc_codec *codec = dai->codec;
b2c812e2	218	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee MB	219	int iface_reg, iface;
	220	int ratio_shift, master;
	221	int i;
	222
f0fba2ad	223	switch (dai->driver->id) {
924914ee MB	224	case WM8776_DAI_DAC:
	225	iface_reg = WM8776_DACIFCTRL;
	226	master = 0x80;
	227	ratio_shift = 4;
	228	break;
	229	case WM8776_DAI_ADC:
	230	iface_reg = WM8776_ADCIFCTRL;
	231	master = 0x100;
	232	ratio_shift = 0;
	233	break;
	234	default:
	235	return -EINVAL;
	236	}
	237
924914ee	238	/* Set word length */
d1dc698a TT	239	switch (snd_pcm_format_width(params_format(params))) {
	240	case 16:
	241	iface = 0;
990fc3d0	242	break;
d1dc698a TT	243	case 20:
d1dc698a TT	244	iface = 0x10;
924914ee	245	break;
d1dc698a TT	246	case 24:
d1dc698a TT	247	iface = 0x20;
924914ee	248	break;
d1dc698a TT	249	case 32:
d1dc698a TT	250	iface = 0x30;
924914ee	251	break;
d1dc698a TT	252	default:
	253	dev_err(codec->dev, "Unsupported sample size: %i\n",
	254	snd_pcm_format_width(params_format(params)));
	255	return -EINVAL;
924914ee MB	256	}
	257
	258	/* Only need to set MCLK/LRCLK ratio if we're master */
	259	if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
	260	for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
f0fba2ad	261	if (wm8776->sysclk[dai->driver->id] / params_rate(params)
924914ee MB	262	== mclk_ratios[i])
	263	break;
	264	}
	265
	266	if (i == ARRAY_SIZE(mclk_ratios)) {
	267	dev_err(codec->dev,
	268	"Unable to configure MCLK ratio %d/%d\n",
f0fba2ad	269	wm8776->sysclk[dai->driver->id], params_rate(params));
924914ee MB	270	return -EINVAL;
	271	}
	272
	273	dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
	274
	275	snd_soc_update_bits(codec, WM8776_MSTRCTRL,
	276	0x7 << ratio_shift, i << ratio_shift);
	277	} else {
	278	dev_dbg(codec->dev, "DAI in slave mode\n");
	279	}
	280
	281	snd_soc_update_bits(codec, iface_reg, 0x30, iface);
	282
	283	return 0;
	284	}
	285
	286	static int wm8776_mute(struct snd_soc_dai *dai, int mute)
	287	{
	288	struct snd_soc_codec *codec = dai->codec;
	289
	290	return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
	291	}
	292
	293	static int wm8776_set_sysclk(struct snd_soc_dai *dai,
	294	int clk_id, unsigned int freq, int dir)
	295	{
	296	struct snd_soc_codec *codec = dai->codec;
b2c812e2	297	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee	298
f0fba2ad	299	BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));
924914ee	300
f0fba2ad	301	wm8776->sysclk[dai->driver->id] = freq;
924914ee MB	302
	303	return 0;
	304	}
	305
	306	static int wm8776_set_bias_level(struct snd_soc_codec *codec,
	307	enum snd_soc_bias_level level)
	308	{
	309	switch (level) {
	310	case SND_SOC_BIAS_ON:
	311	break;
	312	case SND_SOC_BIAS_PREPARE:
	313	break;
	314	case SND_SOC_BIAS_STANDBY:
ce6120cc	315	if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
abe11d0a AL	316	snd_soc_cache_sync(codec);
abe11d0a AL	317
924914ee MB	318	/* Disable the global powerdown; DAPM does the rest */
	319	snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
	320	}
	321
	322	break;
	323	case SND_SOC_BIAS_OFF:
	324	snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
	325	break;
	326	}
	327
ce6120cc	328	codec->dapm.bias_level = level;
924914ee MB	329	return 0;
	330	}
	331
924914ee MB	332	#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S20_3LE \|\
	333	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S32_LE)
	334
85e7652d	335	static const struct snd_soc_dai_ops wm8776_dac_ops = {
924914ee MB	336	.digital_mute = wm8776_mute,
	337	.hw_params = wm8776_hw_params,
	338	.set_fmt = wm8776_set_fmt,
	339	.set_sysclk = wm8776_set_sysclk,
	340	};
	341
85e7652d	342	static const struct snd_soc_dai_ops wm8776_adc_ops = {
924914ee MB	343	.hw_params = wm8776_hw_params,
	344	.set_fmt = wm8776_set_fmt,
	345	.set_sysclk = wm8776_set_sysclk,
	346	};
	347
f0fba2ad	348	static struct snd_soc_dai_driver wm8776_dai[] = {
924914ee	349	{
f0fba2ad LG	350	.name = "wm8776-hifi-playback",
f0fba2ad LG	351	.id = WM8776_DAI_DAC,
924914ee MB	352	.playback = {
	353	.stream_name = "Playback",
	354	.channels_min = 2,
	355	.channels_max = 2,
0016226d TT	356	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	357	.rate_min = 32000,
	358	.rate_max = 192000,
924914ee MB	359	.formats = WM8776_FORMATS,
	360	},
	361	.ops = &wm8776_dac_ops,
	362	},
	363	{
f0fba2ad LG	364	.name = "wm8776-hifi-capture",
f0fba2ad LG	365	.id = WM8776_DAI_ADC,
924914ee MB	366	.capture = {
	367	.stream_name = "Capture",
	368	.channels_min = 2,
	369	.channels_max = 2,
0016226d TT	370	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	371	.rate_min = 32000,
	372	.rate_max = 96000,
924914ee MB	373	.formats = WM8776_FORMATS,
	374	},
	375	.ops = &wm8776_adc_ops,
	376	},
	377	};
924914ee MB	378
924914ee MB	379	#ifdef CONFIG_PM
84b315ee	380	static int wm8776_suspend(struct snd_soc_codec *codec)
924914ee	381	{
924914ee MB	382	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
	383
	384	return 0;
	385	}
	386
f0fba2ad	387	static int wm8776_resume(struct snd_soc_codec *codec)
924914ee	388	{
924914ee	389	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
924914ee MB	390	return 0;
	391	}
	392	#else
	393	#define wm8776_suspend NULL
	394	#define wm8776_resume NULL
	395	#endif
	396
f0fba2ad	397	static int wm8776_probe(struct snd_soc_codec *codec)
924914ee	398	{
f0fba2ad	399	struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
924914ee MB	400	int ret = 0;
924914ee MB	401
f0fba2ad LG	402	ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
	403	if (ret < 0) {
	404	dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
	405	return ret;
924914ee MB	406	}
924914ee MB	407
f0fba2ad	408	ret = wm8776_reset(codec);
924914ee	409	if (ret < 0) {
f0fba2ad LG	410	dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
f0fba2ad LG	411	return ret;
924914ee MB	412	}
924914ee MB	413
f0fba2ad LG	414	wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
	415
	416	/* Latch the update bits; right channel only since we always
	417	* update both. */
	418	snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
	419	snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
	420
924914ee	421	return ret;
924914ee MB	422	}
	423
	424	/* power down chip */
f0fba2ad	425	static int wm8776_remove(struct snd_soc_codec *codec)
924914ee	426	{
f0fba2ad	427	wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
924914ee MB	428	return 0;
	429	}
	430
f0fba2ad	431	static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
924914ee MB	432	.probe = wm8776_probe,
	433	.remove = wm8776_remove,
	434	.suspend = wm8776_suspend,
	435	.resume = wm8776_resume,
f0fba2ad	436	.set_bias_level = wm8776_set_bias_level,
e5eec34c	437	.reg_cache_size = ARRAY_SIZE(wm8776_reg),
f0fba2ad LG	438	.reg_word_size = sizeof(u16),
f0fba2ad LG	439	.reg_cache_default = wm8776_reg,
1db3c98e MB	440
	441	.controls = wm8776_snd_controls,
	442	.num_controls = ARRAY_SIZE(wm8776_snd_controls),
	443	.dapm_widgets = wm8776_dapm_widgets,
	444	.num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
	445	.dapm_routes = routes,
	446	.num_dapm_routes = ARRAY_SIZE(routes),
924914ee	447	};
924914ee	448
b6de4315 MB	449	static const struct of_device_id wm8776_of_match[] = {
	450	{ .compatible = "wlf,wm8776", },
	451	{ }
	452	};
	453	MODULE_DEVICE_TABLE(of, wm8776_of_match);
	454
924914ee	455	#if defined(CONFIG_SPI_MASTER)
924914ee MB	456	static int __devinit wm8776_spi_probe(struct spi_device *spi)
924914ee MB	457	{
924914ee	458	struct wm8776_priv *wm8776;
f0fba2ad	459	int ret;
924914ee	460
bf97ca9a MB	461	wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
bf97ca9a MB	462	GFP_KERNEL);
924914ee MB	463	if (wm8776 == NULL)
	464	return -ENOMEM;
	465
f0fba2ad LG	466	wm8776->control_type = SND_SOC_SPI;
f0fba2ad LG	467	spi_set_drvdata(spi, wm8776);
924914ee	468
f0fba2ad LG	469	ret = snd_soc_register_codec(&spi->dev,
f0fba2ad LG	470	&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
bf97ca9a	471
f0fba2ad	472	return ret;
924914ee MB	473	}
	474
	475	static int __devexit wm8776_spi_remove(struct spi_device *spi)
	476	{
f0fba2ad	477	snd_soc_unregister_codec(&spi->dev);
924914ee MB	478	return 0;
	479	}
	480
924914ee MB	481	static struct spi_driver wm8776_spi_driver = {
924914ee MB	482	.driver = {
1e3ad571	483	.name = "wm8776",
924914ee	484	.owner = THIS_MODULE,
b6de4315	485	.of_match_table = wm8776_of_match,
924914ee MB	486	},
924914ee MB	487	.probe = wm8776_spi_probe,
924914ee MB	488	.remove = __devexit_p(wm8776_spi_remove),
	489	};
	490	#endif /* CONFIG_SPI_MASTER */
	491
	492	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	493	static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
	494	const struct i2c_device_id *id)
	495	{
	496	struct wm8776_priv *wm8776;
f0fba2ad	497	int ret;
924914ee	498
bf97ca9a MB	499	wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
bf97ca9a MB	500	GFP_KERNEL);
924914ee MB	501	if (wm8776 == NULL)
	502	return -ENOMEM;
	503
924914ee	504	i2c_set_clientdata(i2c, wm8776);
f0fba2ad	505	wm8776->control_type = SND_SOC_I2C;
924914ee	506
f0fba2ad LG	507	ret = snd_soc_register_codec(&i2c->dev,
f0fba2ad LG	508	&soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
bf97ca9a	509
f0fba2ad	510	return ret;
924914ee MB	511	}
	512
	513	static __devexit int wm8776_i2c_remove(struct i2c_client *client)
	514	{
f0fba2ad	515	snd_soc_unregister_codec(&client->dev);
924914ee MB	516	return 0;
	517	}
	518
924914ee	519	static const struct i2c_device_id wm8776_i2c_id[] = {
fdd48f9d MB	520	{ "wm8775", WM8775 },
fdd48f9d MB	521	{ "wm8776", WM8776 },
924914ee MB	522	{ }
	523	};
	524	MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
	525
	526	static struct i2c_driver wm8776_i2c_driver = {
	527	.driver = {
1e3ad571	528	.name = "wm8776",
924914ee	529	.owner = THIS_MODULE,
b6de4315	530	.of_match_table = wm8776_of_match,
924914ee MB	531	},
	532	.probe = wm8776_i2c_probe,
	533	.remove = __devexit_p(wm8776_i2c_remove),
924914ee MB	534	.id_table = wm8776_i2c_id,
	535	};
	536	#endif
	537
	538	static int __init wm8776_modinit(void)
	539	{
f0fba2ad	540	int ret = 0;
924914ee MB	541	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	542	ret = i2c_add_driver(&wm8776_i2c_driver);
	543	if (ret != 0) {
f0fba2ad	544	printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
924914ee MB	545	ret);
	546	}
	547	#endif
	548	#if defined(CONFIG_SPI_MASTER)
	549	ret = spi_register_driver(&wm8776_spi_driver);
	550	if (ret != 0) {
f0fba2ad	551	printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
924914ee MB	552	ret);
	553	}
	554	#endif
f0fba2ad	555	return ret;
924914ee MB	556	}
	557	module_init(wm8776_modinit);
	558
	559	static void __exit wm8776_exit(void)
	560	{
	561	#if defined(CONFIG_I2C) \|\| defined(CONFIG_I2C_MODULE)
	562	i2c_del_driver(&wm8776_i2c_driver);
	563	#endif
	564	#if defined(CONFIG_SPI_MASTER)
	565	spi_unregister_driver(&wm8776_spi_driver);
	566	#endif
	567	}
	568	module_exit(wm8776_exit);
	569
	570	MODULE_DESCRIPTION("ASoC WM8776 driver");
	571	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	572	MODULE_LICENSE("GPL");