[net-next-2.6.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 <sound/soc-dapm.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 const struct soc_enum wm9705_enum_mic =
	SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
static const struct soc_enum wm9705_enum_rec_l =
	SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
static const struct soc_enum wm9705_enum_rec_r =
	SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, 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 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"},
};

static int wm9705_add_widgets(struct snd_soc_codec *codec)
{
	snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets,
					ARRAY_SIZE(wm9705_dapm_widgets));
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	return 0;
}

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

	switch (reg) {
	case AC97_RESET:
	case AC97_VENDOR_ID1:
	case AC97_VENDOR_ID2:
		return soc_ac97_ops.read(codec->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)
{
	u16 *cache = codec->reg_cache;

	soc_ac97_ops.write(codec->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_pcm_runtime *runtime = substream->runtime;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_device *socdev = rtd->socdev;
	struct snd_soc_codec *codec = socdev->card->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, 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 struct snd_soc_dai_ops wm9705_dai_ops = {
	.prepare	= ac97_prepare,
};

struct snd_soc_dai wm9705_dai[] = {
	{
		.name = "AC97 HiFi",
		.ac97_control = 1,
		.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 = "AC97 Aux",
		.playback = {
			.stream_name = "Aux Playback",
			.channels_min = 1,
			.channels_max = 1,
			.rates = WM9705_AC97_RATES,
			.formats = SNDRV_PCM_FMTBIT_S16_LE,
		},
	}
};
EXPORT_SYMBOL_GPL(wm9705_dai);

static int wm9705_reset(struct snd_soc_codec *codec)
{
	if (soc_ac97_ops.reset) {
		soc_ac97_ops.reset(codec->ac97);
		if (ac97_read(codec, 0) == wm9705_reg[0])
			return 0; /* Success */
	}

	return -EIO;
}

#ifdef CONFIG_PM
static int wm9705_soc_suspend(struct platform_device *pdev, pm_message_t msg)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;

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

	return 0;
}

static int wm9705_soc_resume(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;
	int i, ret;
	u16 *cache = codec->reg_cache;

	ret = wm9705_reset(codec);
	if (ret < 0) {
		printk(KERN_ERR "could not reset AC97 codec\n");
		return ret;
	}

	for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
		soc_ac97_ops.write(codec->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 platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec;
	int ret = 0;

	printk(KERN_INFO "WM9705 SoC Audio Codec\n");

	socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec),
				      GFP_KERNEL);
	if (socdev->card->codec == NULL)
		return -ENOMEM;
	codec = socdev->card->codec;
	mutex_init(&codec->mutex);

	codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL);
	if (codec->reg_cache == NULL) {
		ret = -ENOMEM;
		goto cache_err;
	}
	codec->reg_cache_size = sizeof(wm9705_reg);
	codec->reg_cache_step = 2;

	codec->name = "WM9705";
	codec->owner = THIS_MODULE;
	codec->dai = wm9705_dai;
	codec->num_dai = ARRAY_SIZE(wm9705_dai);
	codec->write = ac97_write;
	codec->read = ac97_read;
	INIT_LIST_HEAD(&codec->dapm_widgets);
	INIT_LIST_HEAD(&codec->dapm_paths);

	ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
	if (ret < 0) {
		printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
		goto codec_err;
	}

	/* register pcms */
	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	if (ret < 0)
		goto pcm_err;

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

	snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
				ARRAY_SIZE(wm9705_snd_ac97_controls));
	wm9705_add_widgets(codec);

	return 0;

reset_err:
	snd_soc_free_pcms(socdev);
pcm_err:
	snd_soc_free_ac97_codec(codec);
codec_err:
	kfree(codec->reg_cache);
cache_err:
	kfree(socdev->card->codec);
	socdev->card->codec = NULL;
	return ret;
}

static int wm9705_soc_remove(struct platform_device *pdev)
{
	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	struct snd_soc_codec *codec = socdev->card->codec;

	if (codec == NULL)
		return 0;

	snd_soc_dapm_free(socdev);
	snd_soc_free_pcms(socdev);
	snd_soc_free_ac97_codec(codec);
	kfree(codec->reg_cache);
	kfree(codec);
	return 0;
}

struct snd_soc_codec_device soc_codec_dev_wm9705 = {
	.probe = 	wm9705_soc_probe,
	.remove = 	wm9705_soc_remove,
	.suspend =	wm9705_soc_suspend,
	.resume =	wm9705_soc_resume,
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705);

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>
	22	#include <sound/soc-dapm.h>
	23
01e097d6 MB	24	#include "wm9705.h"
01e097d6 MB	25
2aceefef IM	26	/*
	27	* WM9705 register cache
	28	*/
	29	static const u16 wm9705_reg[] = {
	30	0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
	31	0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
	32	0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
	33	0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
	34	0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
	35	0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
	36	0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
	37	0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
	38	0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
	39	0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
	40	0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
	41	0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
	42	0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
	43	0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
	44	0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
	45	0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
	46	};
	47
	48	static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
	49	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
	50	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
	51	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
	52	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
	53	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
	54	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
	55	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
	56	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
	57	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
	58	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
	59	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
	60	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
	61	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
	62	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
927b0aea IM	63	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
927b0aea IM	64	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
2aceefef IM	65	};
	66
	67	static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
	68	static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
	69	"Line", "Stereo Mix", "Mono Mix", "Phone"};
	70
	71	static const struct soc_enum wm9705_enum_mic =
	72	SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
	73	static const struct soc_enum wm9705_enum_rec_l =
	74	SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
	75	static const struct soc_enum wm9705_enum_rec_r =
	76	SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel);
	77
	78	/* Headphone Mixer */
	79	static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
	80	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
	81	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
	82	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
	83	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
	84	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
	85	};
	86
	87	/* Mic source */
	88	static const struct snd_kcontrol_new wm9705_mic_src_controls =
	89	SOC_DAPM_ENUM("Route", wm9705_enum_mic);
	90
	91	/* Capture source */
	92	static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
	93	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
	94	static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
	95	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
	96
	97	/* DAPM widgets */
	98	static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
	99	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
	100	&wm9705_mic_src_controls),
	101	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
	102	&wm9705_capture_selectl_controls),
	103	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
	104	&wm9705_capture_selectr_controls),
	105	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
	106	SND_SOC_NOPM, 0, 0),
	107	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
	108	SND_SOC_NOPM, 0, 0),
	109	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
	110	&wm9705_hp_mixer_controls[0],
	111	ARRAY_SIZE(wm9705_hp_mixer_controls)),
	112	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
	113	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
	114	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
	115	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	116	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	117	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	118	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	119	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	120	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	121	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	122	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	123	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	124	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
	125	SND_SOC_DAPM_OUTPUT("HPOUTL"),
	126	SND_SOC_DAPM_OUTPUT("HPOUTR"),
	127	SND_SOC_DAPM_OUTPUT("LOUT"),
	128	SND_SOC_DAPM_OUTPUT("ROUT"),
129	SND_SOC_DAPM_OUTPUT("MONOOUT"),
130	SND_SOC_DAPM_INPUT("PHONE"),
131	SND_SOC_DAPM_INPUT("LINEINL"),
132	SND_SOC_DAPM_INPUT("LINEINR"),
133	SND_SOC_DAPM_INPUT("CDINL"),
134	SND_SOC_DAPM_INPUT("CDINR"),
135	SND_SOC_DAPM_INPUT("PCBEEP"),
136	SND_SOC_DAPM_INPUT("MIC1"),
137	SND_SOC_DAPM_INPUT("MIC2"),
138	};
139
140	/* Audio map
141	* WM9705 has no switches to disable the route from the inputs to the HP mixer
142	* so in order to prevent active inputs from forcing the audio outputs to be
143	* constantly enabled, we use the mutes on those inputs to simulate such
144	* controls.
145	*/
146	static const struct snd_soc_dapm_route audio_map[] = {
147	/* HP mixer */
148	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
149	{"HP Mixer", "CD Playback Switch", "CD PGA"},
150	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
151	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
152	{"HP Mixer", "Line Playback Switch", "Line PGA"},
153	{"HP Mixer", NULL, "Left DAC"},
154	{"HP Mixer", NULL, "Right DAC"},
155
156	/* mono mixer */
157	{"Mono Mixer", NULL, "HP Mixer"},
158
159	/* outputs */
160	{"Headphone PGA", NULL, "HP Mixer"},
161	{"HPOUTL", NULL, "Headphone PGA"},
162	{"HPOUTR", NULL, "Headphone PGA"},
163	{"Line out PGA", NULL, "HP Mixer"},
164	{"LOUT", NULL, "Line out PGA"},
165	{"ROUT", NULL, "Line out PGA"},
166	{"Mono PGA", NULL, "Mono Mixer"},
167	{"MONOOUT", NULL, "Mono PGA"},
168
169	/* inputs */
170	{"CD PGA", NULL, "CDINL"},
171	{"CD PGA", NULL, "CDINR"},
172	{"Line PGA", NULL, "LINEINL"},
173	{"Line PGA", NULL, "LINEINR"},
174	{"Phone PGA", NULL, "PHONE"},
175	{"Mic Source", "Mic 1", "MIC1"},
176	{"Mic Source", "Mic 2", "MIC2"},
177	{"Mic PGA", NULL, "Mic Source"},
178	{"PCBEEP PGA", NULL, "PCBEEP"},
179
180	/* Left capture selector */
181	{"Left Capture Source", "Mic", "Mic Source"},
182	{"Left Capture Source", "CD", "CDINL"},
183	{"Left Capture Source", "Line", "LINEINL"},
184	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
185	{"Left Capture Source", "Mono Mix", "HP Mixer"},
186	{"Left Capture Source", "Phone", "PHONE"},
187
188	/* Right capture source */
189	{"Right Capture Source", "Mic", "Mic Source"},
190	{"Right Capture Source", "CD", "CDINR"},
191	{"Right Capture Source", "Line", "LINEINR"},
192	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
193	{"Right Capture Source", "Mono Mix", "HP Mixer"},
194	{"Right Capture Source", "Phone", "PHONE"},
195
196	{"ADC PGA", NULL, "Left Capture Source"},
197	{"ADC PGA", NULL, "Right Capture Source"},
198
199	/* ADC's */
200	{"Left ADC", NULL, "ADC PGA"},
201	{"Right ADC", NULL, "ADC PGA"},
202	};
203
204	static int wm9705_add_widgets(struct snd_soc_codec *codec)
205	{
206	snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets,
207	ARRAY_SIZE(wm9705_dapm_widgets));
208	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
2aceefef IM	209
	210	return 0;
	211	}
	212
	213	/* We use a register cache to enhance read performance. */
	214	static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
	215	{
	216	u16 *cache = codec->reg_cache;
	217
	218	switch (reg) {
	219	case AC97_RESET:
	220	case AC97_VENDOR_ID1:
	221	case AC97_VENDOR_ID2:
	222	return soc_ac97_ops.read(codec->ac97, reg);
	223	default:
	224	reg = reg >> 1;
	225
	226	if (reg >= (ARRAY_SIZE(wm9705_reg)))
	227	return -EIO;
	228
	229	return cache[reg];
	230	}
	231	}
	232
	233	static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
	234	unsigned int val)
	235	{
	236	u16 *cache = codec->reg_cache;
	237
	238	soc_ac97_ops.write(codec->ac97, reg, val);
	239	reg = reg >> 1;
	240	if (reg < (ARRAY_SIZE(wm9705_reg)))
	241	cache[reg] = val;
	242
	243	return 0;
	244	}
	245
	246	static int ac97_prepare(struct snd_pcm_substream *substream,
	247	struct snd_soc_dai *dai)
	248	{
	249	struct snd_pcm_runtime *runtime = substream->runtime;
	250	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	251	struct snd_soc_device *socdev = rtd->socdev;
6627a653	252	struct snd_soc_codec *codec = socdev->card->codec;
2aceefef IM	253	int reg;
	254	u16 vra;
	255
	256	vra = ac97_read(codec, AC97_EXTENDED_STATUS);
	257	ac97_write(codec, AC97_EXTENDED_STATUS, vra \| 0x1);
	258
	259	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	260	reg = AC97_PCM_FRONT_DAC_RATE;
	261	else
	262	reg = AC97_PCM_LR_ADC_RATE;
	263
	264	return ac97_write(codec, reg, runtime->rate);
	265	}
	266
	267	#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \| \
	268	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \| \
	269	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	270	SNDRV_PCM_RATE_48000)
	271
6335d055 EM	272	static struct snd_soc_dai_ops wm9705_dai_ops = {
	273	.prepare = ac97_prepare,
	274	};
	275
2aceefef IM	276	struct snd_soc_dai wm9705_dai[] = {
	277	{
	278	.name = "AC97 HiFi",
	279	.ac97_control = 1,
	280	.playback = {
	281	.stream_name = "HiFi Playback",
	282	.channels_min = 1,
	283	.channels_max = 2,
	284	.rates = WM9705_AC97_RATES,
33f503c9	285	.formats = SND_SOC_STD_AC97_FMTS,
2aceefef IM	286	},
	287	.capture = {
	288	.stream_name = "HiFi Capture",
	289	.channels_min = 1,
	290	.channels_max = 2,
	291	.rates = WM9705_AC97_RATES,
33f503c9	292	.formats = SND_SOC_STD_AC97_FMTS,
2aceefef	293	},
6335d055	294	.ops = &wm9705_dai_ops,
2aceefef IM	295	},
	296	{
	297	.name = "AC97 Aux",
	298	.playback = {
	299	.stream_name = "Aux Playback",
	300	.channels_min = 1,
	301	.channels_max = 1,
	302	.rates = WM9705_AC97_RATES,
	303	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	304	},
	305	}
	306	};
	307	EXPORT_SYMBOL_GPL(wm9705_dai);
	308
	309	static int wm9705_reset(struct snd_soc_codec *codec)
	310	{
	311	if (soc_ac97_ops.reset) {
	312	soc_ac97_ops.reset(codec->ac97);
	313	if (ac97_read(codec, 0) == wm9705_reg[0])
	314	return 0; /* Success */
	315	}
	316
	317	return -EIO;
	318	}
	319
0a11b168	320	#ifdef CONFIG_PM
516ef69f	321	static int wm9705_soc_suspend(struct platform_device *pdev, pm_message_t msg)
0a11b168 MB	322	{
	323	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	324	struct snd_soc_codec *codec = socdev->card->codec;
	325
	326	soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
	327
	328	return 0;
	329	}
	330
	331	static int wm9705_soc_resume(struct platform_device *pdev)
	332	{
	333	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	334	struct snd_soc_codec *codec = socdev->card->codec;
	335	int i, ret;
	336	u16 *cache = codec->reg_cache;
	337
	338	ret = wm9705_reset(codec);
	339	if (ret < 0) {
	340	printk(KERN_ERR "could not reset AC97 codec\n");
	341	return ret;
	342	}
	343
	344	for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
	345	soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
	346	}
	347
	348	return 0;
	349	}
	350	#else
	351	#define wm9705_soc_suspend NULL
	352	#define wm9705_soc_resume NULL
	353	#endif
	354
2aceefef IM	355	static int wm9705_soc_probe(struct platform_device *pdev)
	356	{
	357	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
	358	struct snd_soc_codec *codec;
	359	int ret = 0;
	360
	361	printk(KERN_INFO "WM9705 SoC Audio Codec\n");
	362
6627a653 MB	363	socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec),
	364	GFP_KERNEL);
	365	if (socdev->card->codec == NULL)
2aceefef	366	return -ENOMEM;
6627a653	367	codec = socdev->card->codec;
2aceefef IM	368	mutex_init(&codec->mutex);
	369
	370	codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL);
	371	if (codec->reg_cache == NULL) {
	372	ret = -ENOMEM;
	373	goto cache_err;
	374	}
	375	codec->reg_cache_size = sizeof(wm9705_reg);
	376	codec->reg_cache_step = 2;
	377
	378	codec->name = "WM9705";
	379	codec->owner = THIS_MODULE;
	380	codec->dai = wm9705_dai;
	381	codec->num_dai = ARRAY_SIZE(wm9705_dai);
	382	codec->write = ac97_write;
	383	codec->read = ac97_read;
	384	INIT_LIST_HEAD(&codec->dapm_widgets);
	385	INIT_LIST_HEAD(&codec->dapm_paths);
	386
	387	ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
	388	if (ret < 0) {
	389	printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
	390	goto codec_err;
	391	}
	392
	393	/* register pcms */
	394	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
	395	if (ret < 0)
	396	goto pcm_err;
	397
	398	ret = wm9705_reset(codec);
	399	if (ret)
	400	goto reset_err;
	401
	402	snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
	403	ARRAY_SIZE(wm9705_snd_ac97_controls));
	404	wm9705_add_widgets(codec);
	405
2aceefef IM	406	return 0;
2aceefef IM	407
a22eaf4c TI	408	reset_err:
a22eaf4c TI	409	snd_soc_free_pcms(socdev);
2aceefef IM	410	pcm_err:
	411	snd_soc_free_ac97_codec(codec);
	412	codec_err:
	413	kfree(codec->reg_cache);
	414	cache_err:
6627a653 MB	415	kfree(socdev->card->codec);
6627a653 MB	416	socdev->card->codec = NULL;
2aceefef IM	417	return ret;
	418	}
	419
	420	static int wm9705_soc_remove(struct platform_device *pdev)
	421	{
	422	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
6627a653	423	struct snd_soc_codec *codec = socdev->card->codec;
2aceefef IM	424
	425	if (codec == NULL)
	426	return 0;
	427
	428	snd_soc_dapm_free(socdev);
	429	snd_soc_free_pcms(socdev);
	430	snd_soc_free_ac97_codec(codec);
	431	kfree(codec->reg_cache);
	432	kfree(codec);
	433	return 0;
	434	}
	435
	436	struct snd_soc_codec_device soc_codec_dev_wm9705 = {
	437	.probe = wm9705_soc_probe,
	438	.remove = wm9705_soc_remove,
0a11b168 MB	439	.suspend = wm9705_soc_suspend,
0a11b168 MB	440	.resume = wm9705_soc_resume,
2aceefef IM	441	};
	442	EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705);
	443
	444	MODULE_DESCRIPTION("ASoC WM9705 driver");
	445	MODULE_AUTHOR("Ian Molton");
	446	MODULE_LICENSE("GPL v2");