[deliverable/linux.git] / sound / soc / codecs / wm9705.c

/*
 * wm9705.c  --  ALSA Soc WM9705 codec support
 *
 * Copyright 2008 Ian Molton <spyro@f2s.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation; Version 2 of the  License only.
 *
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>

#include "wm9705.h"

/*
 * WM9705 register cache
 */
static const u16 wm9705_reg[] = {
	0x6150, 0x8000, 0x8000, 0x8000, /* 0x0  */
	0x0000, 0x8000, 0x8008, 0x8008, /* 0x8  */
	0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
	0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
	0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
	0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
	0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
	0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
	0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
	0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
};

static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
};

static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
	"Line", "Stereo Mix", "Mono Mix", "Phone"};

static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
			    AC97_GENERAL_PURPOSE, 8, wm9705_mic);
static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
			    AC97_REC_SEL, 8, wm9705_rec_sel);
static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
			    AC97_REC_SEL, 0, wm9705_rec_sel);

/* Headphone Mixer */
static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
};

/* Mic source */
static const struct snd_kcontrol_new wm9705_mic_src_controls =
	SOC_DAPM_ENUM("Route", wm9705_enum_mic);

/* Capture source */
static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);

/* DAPM widgets */
static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
		&wm9705_mic_src_controls),
	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
		&wm9705_capture_selectl_controls),
	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
		&wm9705_capture_selectr_controls),
	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
		SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
		SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
		&wm9705_hp_mixer_controls[0],
		ARRAY_SIZE(wm9705_hp_mixer_controls)),
	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	SND_SOC_DAPM_OUTPUT("LOUT"),
	SND_SOC_DAPM_OUTPUT("ROUT"),
	SND_SOC_DAPM_OUTPUT("MONOOUT"),
	SND_SOC_DAPM_INPUT("PHONE"),
	SND_SOC_DAPM_INPUT("LINEINL"),
	SND_SOC_DAPM_INPUT("LINEINR"),
	SND_SOC_DAPM_INPUT("CDINL"),
	SND_SOC_DAPM_INPUT("CDINR"),
	SND_SOC_DAPM_INPUT("PCBEEP"),
	SND_SOC_DAPM_INPUT("MIC1"),
	SND_SOC_DAPM_INPUT("MIC2"),
};

/* Audio map
 * WM9705 has no switches to disable the route from the inputs to the HP mixer
 * so in order to prevent active inputs from forcing the audio outputs to be
 * constantly enabled, we use the mutes on those inputs to simulate such
 * controls.
 */
static const struct snd_soc_dapm_route wm9705_audio_map[] = {
	/* HP mixer */
	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
	{"HP Mixer", "CD Playback Switch", "CD PGA"},
	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
	{"HP Mixer", "Line Playback Switch", "Line PGA"},
	{"HP Mixer", NULL, "Left DAC"},
	{"HP Mixer", NULL, "Right DAC"},

	/* mono mixer */
	{"Mono Mixer", NULL, "HP Mixer"},

	/* outputs */
	{"Headphone PGA", NULL, "HP Mixer"},
	{"HPOUTL", NULL, "Headphone PGA"},
	{"HPOUTR", NULL, "Headphone PGA"},
	{"Line out PGA", NULL, "HP Mixer"},
	{"LOUT", NULL, "Line out PGA"},
	{"ROUT", NULL, "Line out PGA"},
	{"Mono PGA", NULL, "Mono Mixer"},
	{"MONOOUT", NULL, "Mono PGA"},

	/* inputs */
	{"CD PGA", NULL, "CDINL"},
	{"CD PGA", NULL, "CDINR"},
	{"Line PGA", NULL, "LINEINL"},
	{"Line PGA", NULL, "LINEINR"},
	{"Phone PGA", NULL, "PHONE"},
	{"Mic Source", "Mic 1", "MIC1"},
	{"Mic Source", "Mic 2", "MIC2"},
	{"Mic PGA", NULL, "Mic Source"},
	{"PCBEEP PGA", NULL, "PCBEEP"},

	/* Left capture selector */
	{"Left Capture Source", "Mic", "Mic Source"},
	{"Left Capture Source", "CD", "CDINL"},
	{"Left Capture Source", "Line", "LINEINL"},
	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
	{"Left Capture Source", "Mono Mix", "HP Mixer"},
	{"Left Capture Source", "Phone", "PHONE"},

	/* Right capture source */
	{"Right Capture Source", "Mic", "Mic Source"},
	{"Right Capture Source", "CD", "CDINR"},
	{"Right Capture Source", "Line", "LINEINR"},
	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
	{"Right Capture Source", "Mono Mix", "HP Mixer"},
	{"Right Capture Source", "Phone", "PHONE"},

	{"ADC PGA", NULL, "Left Capture Source"},
	{"ADC PGA", NULL, "Right Capture Source"},

	/* ADC's */
	{"Left ADC",  NULL, "ADC PGA"},
	{"Right ADC", NULL, "ADC PGA"},
};

/* We use a register cache to enhance read performance. */
static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	u16 *cache = codec->reg_cache;

	switch (reg) {
	case AC97_RESET:
	case AC97_VENDOR_ID1:
	case AC97_VENDOR_ID2:
		return soc_ac97_ops->read(ac97, reg);
	default:
		reg = reg >> 1;

		if (reg >= (ARRAY_SIZE(wm9705_reg)))
			return -EIO;

		return cache[reg];
	}
}

static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
	unsigned int val)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	u16 *cache = codec->reg_cache;

	soc_ac97_ops->write(ac97, reg, val);
	reg = reg >> 1;
	if (reg < (ARRAY_SIZE(wm9705_reg)))
		cache[reg] = val;

	return 0;
}

static int ac97_prepare(struct snd_pcm_substream *substream,
			struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	int reg;
	u16 vra;

	vra = ac97_read(codec, AC97_EXTENDED_STATUS);
	ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
		reg = AC97_PCM_FRONT_DAC_RATE;
	else
		reg = AC97_PCM_LR_ADC_RATE;

	return ac97_write(codec, reg, substream->runtime->rate);
}

#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
			SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
			SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
			SNDRV_PCM_RATE_48000)

static const struct snd_soc_dai_ops wm9705_dai_ops = {
	.prepare	= ac97_prepare,
};

static struct snd_soc_dai_driver wm9705_dai[] = {
	{
		.name = "wm9705-hifi",
		.playback = {
			.stream_name = "HiFi Playback",
			.channels_min = 1,
			.channels_max = 2,
			.rates = WM9705_AC97_RATES,
			.formats = SND_SOC_STD_AC97_FMTS,
		},
		.capture = {
			.stream_name = "HiFi Capture",
			.channels_min = 1,
			.channels_max = 2,
			.rates = WM9705_AC97_RATES,
			.formats = SND_SOC_STD_AC97_FMTS,
		},
		.ops = &wm9705_dai_ops,
	},
	{
		.name = "wm9705-aux",
		.playback = {
			.stream_name = "Aux Playback",
			.channels_min = 1,
			.channels_max = 1,
			.rates = WM9705_AC97_RATES,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
		},
	}
};

static int wm9705_reset(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);

	if (soc_ac97_ops->reset) {
		soc_ac97_ops->reset(ac97);
		if (ac97_read(codec, 0) == wm9705_reg[0])
			return 0; /* Success */
	}

	dev_err(codec->dev, "Failed to reset: AC97 link error\n");

	return -EIO;
}

#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);

	soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);

	return 0;
}

static int wm9705_soc_resume(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	int i, ret;
	u16 *cache = codec->reg_cache;

	ret = wm9705_reset(codec);
	if (ret < 0)
		return ret;

	for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
		soc_ac97_ops->write(ac97, i, cache[i>>1]);
	}

	return 0;
}
#else
#define wm9705_soc_suspend NULL
#define wm9705_soc_resume NULL
#endif

static int wm9705_soc_probe(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97;
	int ret = 0;

	ac97 = snd_soc_alloc_ac97_codec(codec);
	if (IS_ERR(ac97)) {
		ret = PTR_ERR(ac97);
		dev_err(codec->dev, "Failed to register AC97 codec\n");
		return ret;
	}

	ret = wm9705_reset(codec);
	if (ret)
		goto err_put_device;

	ret = device_add(&ac97->dev);
	if (ret)
		goto err_put_device;

	snd_soc_codec_set_drvdata(codec, ac97);

	return 0;

err_put_device:
	put_device(&ac97->dev);
	return ret;
}

static int wm9705_soc_remove(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);

	snd_soc_free_ac97_codec(ac97);
	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
	.probe = 	wm9705_soc_probe,
	.remove = 	wm9705_soc_remove,
	.suspend =	wm9705_soc_suspend,
	.resume =	wm9705_soc_resume,
	.read = ac97_read,
	.write = ac97_write,
	.reg_cache_size = ARRAY_SIZE(wm9705_reg),
	.reg_word_size = sizeof(u16),
	.reg_cache_step = 2,
	.reg_cache_default = wm9705_reg,

	.controls = wm9705_snd_ac97_controls,
	.num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls),
	.dapm_widgets = wm9705_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
	.dapm_routes = wm9705_audio_map,
	.num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
};

static int wm9705_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
}

static int wm9705_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

static struct platform_driver wm9705_codec_driver = {
	.driver = {
			.name = "wm9705-codec",
	},

	.probe = wm9705_probe,
	.remove = wm9705_remove,
};

module_platform_driver(wm9705_codec_driver);

MODULE_DESCRIPTION("ASoC WM9705 driver");
MODULE_AUTHOR("Ian Molton");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
2aceefef IM	1	/*
	2	* wm9705.c -- ALSA Soc WM9705 codec support
	3	*
	4	* Copyright 2008 Ian Molton <spyro@f2s.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; Version 2 of the License only.
	9	*
	10	*/
	11
	12	#include <linux/init.h>
5a0e3ad6	13	#include <linux/slab.h>
2aceefef IM	14	#include <linux/module.h>
	15	#include <linux/kernel.h>
	16	#include <linux/device.h>
	17	#include <sound/core.h>
	18	#include <sound/pcm.h>
	19	#include <sound/ac97_codec.h>
	20	#include <sound/initval.h>
	21	#include <sound/soc.h>
2aceefef	22
01e097d6 MB	23	#include "wm9705.h"
01e097d6 MB	24
2aceefef IM	25	/*
	26	* WM9705 register cache
	27	*/
	28	static const u16 wm9705_reg[] = {
	29	0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
	30	0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
	31	0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
	32	0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
	33	0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
	34	0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
	35	0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
	36	0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
	37	0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
	38	0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
	39	0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
	40	0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
	41	0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
	42	0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
	43	0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
	44	0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
	45	};
	46
	47	static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
	48	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
	49	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
	50	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
	51	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
	52	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
	53	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
	54	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
	55	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
	56	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
	57	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
	58	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
	59	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
	60	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
	61	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
927b0aea IM	62	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
927b0aea IM	63	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
2aceefef IM	64	};
	65
	66	static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
	67	static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
	68	"Line", "Stereo Mix", "Mono Mix", "Phone"};
	69
09981dcb TI	70	static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
	71	AC97_GENERAL_PURPOSE, 8, wm9705_mic);
	72	static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
	73	AC97_REC_SEL, 8, wm9705_rec_sel);
	74	static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
	75	AC97_REC_SEL, 0, wm9705_rec_sel);
2aceefef IM	76
	77	/* Headphone Mixer */
	78	static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
	79	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
	80	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
	81	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
	82	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
	83	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
	84	};
	85
	86	/* Mic source */
	87	static const struct snd_kcontrol_new wm9705_mic_src_controls =
	88	SOC_DAPM_ENUM("Route", wm9705_enum_mic);
	89
	90	/* Capture source */
	91	static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
	92	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
	93	static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
	94	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
	95
	96	/* DAPM widgets */
	97	static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
	98	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
	99	&wm9705_mic_src_controls),
	100	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
	101	&wm9705_capture_selectl_controls),
	102	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
	103	&wm9705_capture_selectr_controls),
	104	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
	105	SND_SOC_NOPM, 0, 0),
	106	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
	107	SND_SOC_NOPM, 0, 0),
	108	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
	109	&wm9705_hp_mixer_controls[0],
	110	ARRAY_SIZE(wm9705_hp_mixer_controls)),
	111	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
	112	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
	113	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
	114	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	115	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	116	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	117	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	118	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	119	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	120	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	121	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	122	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	123	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	124	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	125	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	126	SND_SOC_DAPM_OUTPUT("LOUT"),
	127	SND_SOC_DAPM_OUTPUT("ROUT"),
	128	SND_SOC_DAPM_OUTPUT("MONOOUT"),
	129	SND_SOC_DAPM_INPUT("PHONE"),
	130	SND_SOC_DAPM_INPUT("LINEINL"),
	131	SND_SOC_DAPM_INPUT("LINEINR"),
	132	SND_SOC_DAPM_INPUT("CDINL"),
	133	SND_SOC_DAPM_INPUT("CDINR"),
	134	SND_SOC_DAPM_INPUT("PCBEEP"),
	135	SND_SOC_DAPM_INPUT("MIC1"),
	136	SND_SOC_DAPM_INPUT("MIC2"),
	137	};
	138
	139	/* Audio map
140	* WM9705 has no switches to disable the route from the inputs to the HP mixer
141	* so in order to prevent active inputs from forcing the audio outputs to be
142	* constantly enabled, we use the mutes on those inputs to simulate such
143	* controls.
144	*/
97a58d6e	145	static const struct snd_soc_dapm_route wm9705_audio_map[] = {
2aceefef IM	146	/* HP mixer */
	147	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
	148	{"HP Mixer", "CD Playback Switch", "CD PGA"},
	149	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
	150	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
	151	{"HP Mixer", "Line Playback Switch", "Line PGA"},
	152	{"HP Mixer", NULL, "Left DAC"},
	153	{"HP Mixer", NULL, "Right DAC"},
	154
	155	/* mono mixer */
	156	{"Mono Mixer", NULL, "HP Mixer"},
	157
	158	/* outputs */
	159	{"Headphone PGA", NULL, "HP Mixer"},
	160	{"HPOUTL", NULL, "Headphone PGA"},
	161	{"HPOUTR", NULL, "Headphone PGA"},
	162	{"Line out PGA", NULL, "HP Mixer"},
	163	{"LOUT", NULL, "Line out PGA"},
	164	{"ROUT", NULL, "Line out PGA"},
	165	{"Mono PGA", NULL, "Mono Mixer"},
	166	{"MONOOUT", NULL, "Mono PGA"},
	167
	168	/* inputs */
	169	{"CD PGA", NULL, "CDINL"},
	170	{"CD PGA", NULL, "CDINR"},
	171	{"Line PGA", NULL, "LINEINL"},
	172	{"Line PGA", NULL, "LINEINR"},
	173	{"Phone PGA", NULL, "PHONE"},
	174	{"Mic Source", "Mic 1", "MIC1"},
	175	{"Mic Source", "Mic 2", "MIC2"},
	176	{"Mic PGA", NULL, "Mic Source"},
	177	{"PCBEEP PGA", NULL, "PCBEEP"},
	178
	179	/* Left capture selector */
	180	{"Left Capture Source", "Mic", "Mic Source"},
	181	{"Left Capture Source", "CD", "CDINL"},
	182	{"Left Capture Source", "Line", "LINEINL"},
	183	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
	184	{"Left Capture Source", "Mono Mix", "HP Mixer"},
	185	{"Left Capture Source", "Phone", "PHONE"},
	186
	187	/* Right capture source */
	188	{"Right Capture Source", "Mic", "Mic Source"},
	189	{"Right Capture Source", "CD", "CDINR"},
	190	{"Right Capture Source", "Line", "LINEINR"},
	191	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
	192	{"Right Capture Source", "Mono Mix", "HP Mixer"},
	193	{"Right Capture Source", "Phone", "PHONE"},
	194
	195	{"ADC PGA", NULL, "Left Capture Source"},
	196	{"ADC PGA", NULL, "Right Capture Source"},
	197
	198	/* ADC's */
	199	{"Left ADC", NULL, "ADC PGA"},
	200	{"Right ADC", NULL, "ADC PGA"},
	201	};
	202
2aceefef IM	203	/* We use a register cache to enhance read performance. */
	204	static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
	205	{
358a8bb5	206	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
2aceefef IM	207	u16 *cache = codec->reg_cache;
	208
	209	switch (reg) {
	210	case AC97_RESET:
	211	case AC97_VENDOR_ID1:
	212	case AC97_VENDOR_ID2:
358a8bb5	213	return soc_ac97_ops->read(ac97, reg);
2aceefef IM	214	default:
	215	reg = reg >> 1;
	216
	217	if (reg >= (ARRAY_SIZE(wm9705_reg)))
	218	return -EIO;
	219
	220	return cache[reg];
	221	}
	222	}
	223
	224	static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
	225	unsigned int val)
	226	{
358a8bb5	227	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
2aceefef IM	228	u16 *cache = codec->reg_cache;
2aceefef IM	229
358a8bb5	230	soc_ac97_ops->write(ac97, reg, val);
2aceefef IM	231	reg = reg >> 1;
	232	if (reg < (ARRAY_SIZE(wm9705_reg)))
	233	cache[reg] = val;
	234
	235	return 0;
	236	}
	237
	238	static int ac97_prepare(struct snd_pcm_substream *substream,
	239	struct snd_soc_dai *dai)
	240	{
e6968a17	241	struct snd_soc_codec *codec = dai->codec;
2aceefef IM	242	int reg;
	243	u16 vra;
	244
	245	vra = ac97_read(codec, AC97_EXTENDED_STATUS);
	246	ac97_write(codec, AC97_EXTENDED_STATUS, vra \| 0x1);
	247
	248	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	249	reg = AC97_PCM_FRONT_DAC_RATE;
	250	else
	251	reg = AC97_PCM_LR_ADC_RATE;
	252
019ec505	253	return ac97_write(codec, reg, substream->runtime->rate);
2aceefef IM	254	}
	255
	256	#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \| \
	257	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \| \
	258	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	259	SNDRV_PCM_RATE_48000)
	260
85e7652d	261	static const struct snd_soc_dai_ops wm9705_dai_ops = {
6335d055 EM	262	.prepare = ac97_prepare,
	263	};
	264
f0fba2ad	265	static struct snd_soc_dai_driver wm9705_dai[] = {
2aceefef	266	{
f0fba2ad	267	.name = "wm9705-hifi",
2aceefef IM	268	.playback = {
	269	.stream_name = "HiFi Playback",
	270	.channels_min = 1,
	271	.channels_max = 2,
	272	.rates = WM9705_AC97_RATES,
33f503c9	273	.formats = SND_SOC_STD_AC97_FMTS,
2aceefef IM	274	},
	275	.capture = {
	276	.stream_name = "HiFi Capture",
	277	.channels_min = 1,
	278	.channels_max = 2,
	279	.rates = WM9705_AC97_RATES,
33f503c9	280	.formats = SND_SOC_STD_AC97_FMTS,
2aceefef	281	},
6335d055	282	.ops = &wm9705_dai_ops,
2aceefef IM	283	},
2aceefef IM	284	{
f0fba2ad	285	.name = "wm9705-aux",
2aceefef IM	286	.playback = {
	287	.stream_name = "Aux Playback",
	288	.channels_min = 1,
	289	.channels_max = 1,
	290	.rates = WM9705_AC97_RATES,
	291	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	292	},
	293	}
	294	};
2aceefef IM	295
	296	static int wm9705_reset(struct snd_soc_codec *codec)
	297	{
358a8bb5 LPC	298	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
358a8bb5 LPC	299
b047e1cc	300	if (soc_ac97_ops->reset) {
358a8bb5	301	soc_ac97_ops->reset(ac97);
2aceefef IM	302	if (ac97_read(codec, 0) == wm9705_reg[0])
	303	return 0; /* Success */
	304	}
	305
9cf766f6 LPC	306	dev_err(codec->dev, "Failed to reset: AC97 link error\n");
9cf766f6 LPC	307
2aceefef IM	308	return -EIO;
	309	}
	310
0a11b168	311	#ifdef CONFIG_PM
84b315ee	312	static int wm9705_soc_suspend(struct snd_soc_codec *codec)
0a11b168	313	{
358a8bb5 LPC	314	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	315
	316	soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
0a11b168 MB	317
	318	return 0;
	319	}
	320
f0fba2ad	321	static int wm9705_soc_resume(struct snd_soc_codec *codec)
0a11b168	322	{
358a8bb5	323	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
0a11b168 MB	324	int i, ret;
	325	u16 *cache = codec->reg_cache;
	326
	327	ret = wm9705_reset(codec);
9cf766f6	328	if (ret < 0)
0a11b168	329	return ret;
0a11b168 MB	330
0a11b168 MB	331	for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
358a8bb5	332	soc_ac97_ops->write(ac97, i, cache[i>>1]);
0a11b168 MB	333	}
	334
	335	return 0;
	336	}
	337	#else
	338	#define wm9705_soc_suspend NULL
	339	#define wm9705_soc_resume NULL
	340	#endif
	341
f0fba2ad	342	static int wm9705_soc_probe(struct snd_soc_codec *codec)
2aceefef	343	{
358a8bb5	344	struct snd_ac97 *ac97;
2aceefef IM	345	int ret = 0;
2aceefef IM	346
f8d71be5	347	ac97 = snd_soc_alloc_ac97_codec(codec);
358a8bb5 LPC	348	if (IS_ERR(ac97)) {
358a8bb5 LPC	349	ret = PTR_ERR(ac97);
9cf766f6	350	dev_err(codec->dev, "Failed to register AC97 codec\n");
f0fba2ad	351	return ret;
2aceefef IM	352	}
2aceefef IM	353
2aceefef IM	354	ret = wm9705_reset(codec);
2aceefef IM	355	if (ret)
f8d71be5 LPC	356	goto err_put_device;
	357
	358	ret = device_add(&ac97->dev);
	359	if (ret)
	360	goto err_put_device;
	361
	362	snd_soc_codec_set_drvdata(codec, ac97);
2aceefef	363
2aceefef IM	364	return 0;
2aceefef IM	365
f8d71be5 LPC	366	err_put_device:
f8d71be5 LPC	367	put_device(&ac97->dev);
2aceefef IM	368	return ret;
	369	}
	370
f0fba2ad	371	static int wm9705_soc_remove(struct snd_soc_codec *codec)
2aceefef	372	{
358a8bb5 LPC	373	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	374
	375	snd_soc_free_ac97_codec(ac97);
2aceefef IM	376	return 0;
	377	}
	378
f0fba2ad	379	static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
2aceefef IM	380	.probe = wm9705_soc_probe,
2aceefef IM	381	.remove = wm9705_soc_remove,
0a11b168 MB	382	.suspend = wm9705_soc_suspend,
0a11b168 MB	383	.resume = wm9705_soc_resume,
f0fba2ad LG	384	.read = ac97_read,
f0fba2ad LG	385	.write = ac97_write,
e5eec34c	386	.reg_cache_size = ARRAY_SIZE(wm9705_reg),
f0fba2ad LG	387	.reg_word_size = sizeof(u16),
	388	.reg_cache_step = 2,
	389	.reg_cache_default = wm9705_reg,
d7cabb08 LPC	390
	391	.controls = wm9705_snd_ac97_controls,
	392	.num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls),
97a58d6e LG	393	.dapm_widgets = wm9705_dapm_widgets,
	394	.num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
	395	.dapm_routes = wm9705_audio_map,
	396	.num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
f0fba2ad LG	397	};
f0fba2ad LG	398
7a79e94e	399	static int wm9705_probe(struct platform_device *pdev)
f0fba2ad LG	400	{
	401	return snd_soc_register_codec(&pdev->dev,
	402	&soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
	403	}
	404
7a79e94e	405	static int wm9705_remove(struct platform_device *pdev)
f0fba2ad LG	406	{
	407	snd_soc_unregister_codec(&pdev->dev);
	408	return 0;
	409	}
	410
	411	static struct platform_driver wm9705_codec_driver = {
	412	.driver = {
	413	.name = "wm9705-codec",
f0fba2ad LG	414	},
	415
	416	.probe = wm9705_probe,
7a79e94e	417	.remove = wm9705_remove,
2aceefef	418	};
f0fba2ad	419
5bbcc3c0	420	module_platform_driver(wm9705_codec_driver);
2aceefef IM	421
	422	MODULE_DESCRIPTION("ASoC WM9705 driver");
	423	MODULE_AUTHOR("Ian Molton");
	424	MODULE_LICENSE("GPL v2");