[deliverable/linux.git] / sound / soc / codecs / stac9766.c

/*
 * stac9766.c  --  ALSA SoC STAC9766 codec support
 *
 * Copyright 2009 Jon Smirl, Digispeaker
 * Author: Jon Smirl <jonsmirl@gmail.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;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  Features:-
 *
 *   o Support for AC97 Codec, S/PDIF
 */

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

#include "stac9766.h"

/*
 * STAC9766 register cache
 */
static const u16 stac9766_reg[] = {
	0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
	0x0000, 0x0000, 0x8008, 0x8008, /* e */
	0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
	0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
	0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
	0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
	0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
	0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
	0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
	0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
	0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
	0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
	0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
	0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
	0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
};

static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
			"Line", "Stereo Mix", "Mono Mix", "Phone"};
static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
static const char *stac9766_record_all_mux[] = {"All analog",
	"Analog plus DAC"};
static const char *stac9766_boost1[] = {"0dB", "10dB"};
static const char *stac9766_boost2[] = {"0dB", "20dB"};
static const char *stac9766_stereo_mic[] = {"Off", "On"};

static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
			    AC97_REC_SEL, 8, 0, stac9766_record_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
			    AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
			    AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
			    AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
			    AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
			    AC97_STAC_ANALOG_SPECIAL, 12,
			    stac9766_record_all_mux);
static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
			    AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
			    AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
			    AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);

static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);

static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
	SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
	SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
	SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
		       master_tlv),
	SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
	SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
		       master_tlv),
	SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),

	SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
	SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),


	SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
	SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
	SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
	SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
	SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),

	SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
	SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
	SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
	SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
	SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),

	SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
	SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
	SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
	SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
	SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
	SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
	SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
	SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),

	SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
	SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
	SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
	SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
	SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),

	SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
	SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
	SOC_ENUM("Record All Mux", stac9766_record_all_enum),
	SOC_ENUM("Record Mux", stac9766_record_enum),
	SOC_ENUM("Mono Mux", stac9766_mono_enum),
	SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
};

static int stac9766_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;

	if (reg > AC97_STAC_PAGE0) {
		stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
		soc_ac97_ops->write(ac97, reg, val);
		stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
		return 0;
	}
	if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
		return -EIO;

	soc_ac97_ops->write(ac97, reg, val);
	cache[reg / 2] = val;
	return 0;
}

static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
				       unsigned int reg)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	u16 val = 0, *cache = codec->reg_cache;

	if (reg > AC97_STAC_PAGE0) {
		stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
		val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0);
		stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
		return val;
	}
	if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
		return -EIO;

	if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
		reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
		reg == AC97_VENDOR_ID2) {

		val = soc_ac97_ops->read(ac97, reg);
		return val;
	}
	return cache[reg / 2];
}

static int ac97_analog_prepare(struct snd_pcm_substream *substream,
			       struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct snd_pcm_runtime *runtime = substream->runtime;
	unsigned short reg, vra;

	vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);

	vra |= 0x1; /* enable variable rate audio */
	vra &= ~0x4; /* disable SPDIF output */

	stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);

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

	return stac9766_ac97_write(codec, reg, runtime->rate);
}

static int ac97_digital_prepare(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct snd_pcm_runtime *runtime = substream->runtime;
	unsigned short reg, vra;

	stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);

	vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
	vra |= 0x5; /* Enable VRA and SPDIF out */

	stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);

	reg = AC97_PCM_FRONT_DAC_RATE;

	return stac9766_ac97_write(codec, reg, runtime->rate);
}

static int stac9766_set_bias_level(struct snd_soc_codec *codec,
				   enum snd_soc_bias_level level)
{
	switch (level) {
	case SND_SOC_BIAS_ON: /* full On */
	case SND_SOC_BIAS_PREPARE: /* partial On */
	case SND_SOC_BIAS_STANDBY: /* Off, with power */
		stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
		break;
	case SND_SOC_BIAS_OFF: /* Off, without power */
		/* disable everything including AC link */
		stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
		break;
	}
	codec->dapm.bias_level = level;
	return 0;
}

static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);

	if (try_warm && soc_ac97_ops->warm_reset) {
		soc_ac97_ops->warm_reset(ac97);
		if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
			return 1;
	}

	soc_ac97_ops->reset(ac97);
	if (soc_ac97_ops->warm_reset)
		soc_ac97_ops->warm_reset(ac97);
	if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
		return -EIO;
	return 0;
}

static int stac9766_codec_resume(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	u16 id, reset;

	reset = 0;
	/* give the codec an AC97 warm reset to start the link */
reset:
	if (reset > 5) {
		dev_err(codec->dev, "Failed to resume\n");
		return -EIO;
	}
	ac97->bus->ops->warm_reset(ac97);
	id = soc_ac97_ops->read(ac97, AC97_VENDOR_ID2);
	if (id != 0x4c13) {
		stac9766_reset(codec, 0);
		reset++;
		goto reset;
	}

	return 0;
}

static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
	.prepare = ac97_analog_prepare,
};

static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
	.prepare = ac97_digital_prepare,
};

static struct snd_soc_dai_driver stac9766_dai[] = {
{
	.name = "stac9766-hifi-analog",

	/* stream cababilities */
	.playback = {
		.stream_name = "stac9766 analog",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SND_SOC_STD_AC97_FMTS,
	},
	.capture = {
		.stream_name = "stac9766 analog",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SND_SOC_STD_AC97_FMTS,
	},
	/* alsa ops */
	.ops = &stac9766_dai_ops_analog,
},
{
	.name = "stac9766-hifi-IEC958",

	/* stream cababilities */
	.playback = {
		.stream_name = "stac9766 IEC958",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_32000 | \
			SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
	},
	/* alsa ops */
	.ops = &stac9766_dai_ops_digital,
}
};

static int stac9766_codec_probe(struct snd_soc_codec *codec)
{
	struct snd_ac97 *ac97;
	int ret = 0;

	ac97 = snd_soc_new_ac97_codec(codec);
	if (IS_ERR(ac97))
		return PTR_ERR(ac97);

	snd_soc_codec_set_drvdata(codec, ac97);

	/* do a cold reset for the controller and then try
	 * a warm reset followed by an optional cold reset for codec */
	stac9766_reset(codec, 0);
	ret = stac9766_reset(codec, 1);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to reset: AC97 link error\n");
		goto codec_err;
	}

	return 0;

codec_err:
	snd_soc_free_ac97_codec(ac97);
	return ret;
}

static int stac9766_codec_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_stac9766 = {
	.controls = stac9766_snd_ac97_controls,
	.num_controls = ARRAY_SIZE(stac9766_snd_ac97_controls),
	.write = stac9766_ac97_write,
	.read = stac9766_ac97_read,
	.set_bias_level = stac9766_set_bias_level,
	.suspend_bias_off = true,
	.probe = stac9766_codec_probe,
	.remove = stac9766_codec_remove,
	.resume = stac9766_codec_resume,
	.reg_cache_size = ARRAY_SIZE(stac9766_reg),
	.reg_word_size = sizeof(u16),
	.reg_cache_step = 2,
	.reg_cache_default = stac9766_reg,
};

static int stac9766_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
}

static int stac9766_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

static struct platform_driver stac9766_codec_driver = {
	.driver = {
			.name = "stac9766-codec",
	},

	.probe = stac9766_probe,
	.remove = stac9766_remove,
};

module_platform_driver(stac9766_codec_driver);

MODULE_DESCRIPTION("ASoC stac9766 driver");
MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
3c166c7f JS	1	/*
	2	* stac9766.c -- ALSA SoC STAC9766 codec support
	3	*
	4	* Copyright 2009 Jon Smirl, Digispeaker
	5	* Author: Jon Smirl <jonsmirl@gmail.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*
	12	* Features:-
	13	*
	14	* o Support for AC97 Codec, S/PDIF
	15	*/
	16
	17	#include <linux/init.h>
5a0e3ad6	18	#include <linux/slab.h>
3c166c7f JS	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <sound/core.h>
	22	#include <sound/pcm.h>
	23	#include <sound/ac97_codec.h>
	24	#include <sound/initval.h>
	25	#include <sound/pcm_params.h>
	26	#include <sound/soc.h>
	27	#include <sound/tlv.h>
3c166c7f JS	28
	29	#include "stac9766.h"
	30
3c166c7f JS	31	/*
	32	* STAC9766 register cache
	33	*/
	34	static const u16 stac9766_reg[] = {
	35	0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
	36	0x0000, 0x0000, 0x8008, 0x8008, /* e */
	37	0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
	38	0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
	39	0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
	40	0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
	41	0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
	42	0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
	43	0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
	44	0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
	45	0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
	46	0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
	47	0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
	48	0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
	49	0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
	50	0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
	51	};
	52
05e1efa2 MB	53	static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
05e1efa2 MB	54	"Line", "Stereo Mix", "Mono Mix", "Phone"};
3c166c7f JS	55	static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
	56	static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
	57	static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
	58	static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
05e1efa2 MB	59	static const char *stac9766_record_all_mux[] = {"All analog",
05e1efa2 MB	60	"Analog plus DAC"};
3c166c7f JS	61	static const char *stac9766_boost1[] = {"0dB", "10dB"};
	62	static const char *stac9766_boost2[] = {"0dB", "20dB"};
	63	static const char *stac9766_stereo_mic[] = {"Off", "On"};
	64
3cd7ca58 TI	65	static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
	66	AC97_REC_SEL, 8, 0, stac9766_record_mux);
	67	static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
	68	AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
	69	static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
	70	AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
	71	static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
	72	AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
	73	static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
	74	AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
	75	static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
	76	AC97_STAC_ANALOG_SPECIAL, 12,
	77	stac9766_record_all_mux);
	78	static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
	79	AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
	80	static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
	81	AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
	82	static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
	83	AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
3c166c7f JS	84
	85	static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
	86	static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
	87	static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
	88	static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
	89
	90	static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
	91	SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
	92	SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
05e1efa2 MB	93	SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
05e1efa2 MB	94	master_tlv),
3c166c7f	95	SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
05e1efa2 MB	96	SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
05e1efa2 MB	97	master_tlv),
3c166c7f JS	98	SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
	99
	100	SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
	101	SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
	102
	103
	104	SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
	105	SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
	106	SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
	107	SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
	108	SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
	109
	110	SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
	111	SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
	112	SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
	113	SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
	114	SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
	115
	116	SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
	117	SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
	118	SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
	119	SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
	120	SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
	121	SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
	122	SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
	123	SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
	124
	125	SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
	126	SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
	127	SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
	128	SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
	129	SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
	130
	131	SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
	132	SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
	133	SOC_ENUM("Record All Mux", stac9766_record_all_enum),
	134	SOC_ENUM("Record Mux", stac9766_record_enum),
	135	SOC_ENUM("Mono Mux", stac9766_mono_enum),
	136	SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
	137	};
	138
05e1efa2 MB	139	static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
05e1efa2 MB	140	unsigned int val)
3c166c7f	141	{
358a8bb5	142	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
3c166c7f JS	143	u16 *cache = codec->reg_cache;
	144
	145	if (reg > AC97_STAC_PAGE0) {
	146	stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
358a8bb5	147	soc_ac97_ops->write(ac97, reg, val);
3c166c7f JS	148	stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
	149	return 0;
	150	}
33e319fb	151	if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
3c166c7f JS	152	return -EIO;
3c166c7f JS	153
358a8bb5	154	soc_ac97_ops->write(ac97, reg, val);
3c166c7f JS	155	cache[reg / 2] = val;
	156	return 0;
	157	}
	158
05e1efa2 MB	159	static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
05e1efa2 MB	160	unsigned int reg)
3c166c7f	161	{
358a8bb5	162	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
3c166c7f JS	163	u16 val = 0, *cache = codec->reg_cache;
	164
	165	if (reg > AC97_STAC_PAGE0) {
	166	stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
358a8bb5	167	val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0);
3c166c7f JS	168	stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
	169	return val;
	170	}
33e319fb	171	if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
3c166c7f JS	172	return -EIO;
	173
	174	if (reg == AC97_RESET \|\| reg == AC97_GPIO_STATUS \|\|
	175	reg == AC97_INT_PAGING \|\| reg == AC97_VENDOR_ID1 \|\|
	176	reg == AC97_VENDOR_ID2) {
	177
358a8bb5	178	val = soc_ac97_ops->read(ac97, reg);
3c166c7f JS	179	return val;
	180	}
	181	return cache[reg / 2];
	182	}
	183
	184	static int ac97_analog_prepare(struct snd_pcm_substream *substream,
05e1efa2	185	struct snd_soc_dai *dai)
3c166c7f JS	186	{
	187	struct snd_soc_codec *codec = dai->codec;
	188	struct snd_pcm_runtime *runtime = substream->runtime;
	189	unsigned short reg, vra;
	190
	191	vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
	192
	193	vra \|= 0x1; /* enable variable rate audio */
75b46c13	194	vra &= ~0x4; /* disable SPDIF output */
3c166c7f JS	195
	196	stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
	197
	198	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
	199	reg = AC97_PCM_FRONT_DAC_RATE;
	200	else
	201	reg = AC97_PCM_LR_ADC_RATE;
	202
	203	return stac9766_ac97_write(codec, reg, runtime->rate);
	204	}
	205
	206	static int ac97_digital_prepare(struct snd_pcm_substream *substream,
05e1efa2	207	struct snd_soc_dai *dai)
3c166c7f JS	208	{
	209	struct snd_soc_codec *codec = dai->codec;
	210	struct snd_pcm_runtime *runtime = substream->runtime;
	211	unsigned short reg, vra;
	212
	213	stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
	214
	215	vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
	216	vra \|= 0x5; /* Enable VRA and SPDIF out */
	217
	218	stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
	219
	220	reg = AC97_PCM_FRONT_DAC_RATE;
	221
	222	return stac9766_ac97_write(codec, reg, runtime->rate);
	223	}
	224
3c166c7f	225	static int stac9766_set_bias_level(struct snd_soc_codec *codec,
05e1efa2	226	enum snd_soc_bias_level level)
3c166c7f JS	227	{
	228	switch (level) {
	229	case SND_SOC_BIAS_ON: /* full On */
	230	case SND_SOC_BIAS_PREPARE: /* partial On */
	231	case SND_SOC_BIAS_STANDBY: /* Off, with power */
	232	stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
	233	break;
	234	case SND_SOC_BIAS_OFF: /* Off, without power */
	235	/* disable everything including AC link */
	236	stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
	237	break;
	238	}
ce6120cc	239	codec->dapm.bias_level = level;
3c166c7f JS	240	return 0;
	241	}
	242
05e1efa2	243	static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
3c166c7f	244	{
358a8bb5 LPC	245	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
358a8bb5 LPC	246
b047e1cc	247	if (try_warm && soc_ac97_ops->warm_reset) {
358a8bb5	248	soc_ac97_ops->warm_reset(ac97);
3c166c7f JS	249	if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
	250	return 1;
	251	}
	252
358a8bb5	253	soc_ac97_ops->reset(ac97);
b047e1cc	254	if (soc_ac97_ops->warm_reset)
358a8bb5	255	soc_ac97_ops->warm_reset(ac97);
3c166c7f JS	256	if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
	257	return -EIO;
	258	return 0;
	259	}
	260
f0fba2ad	261	static int stac9766_codec_resume(struct snd_soc_codec *codec)
3c166c7f	262	{
358a8bb5	263	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
3c166c7f JS	264	u16 id, reset;
	265
	266	reset = 0;
	267	/* give the codec an AC97 warm reset to start the link */
	268	reset:
	269	if (reset > 5) {
93932aba	270	dev_err(codec->dev, "Failed to resume\n");
3c166c7f JS	271	return -EIO;
3c166c7f JS	272	}
358a8bb5 LPC	273	ac97->bus->ops->warm_reset(ac97);
358a8bb5 LPC	274	id = soc_ac97_ops->read(ac97, AC97_VENDOR_ID2);
3c166c7f JS	275	if (id != 0x4c13) {
	276	stac9766_reset(codec, 0);
	277	reset++;
	278	goto reset;
	279	}
3c166c7f	280
3c166c7f JS	281	return 0;
	282	}
	283
85e7652d	284	static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
3c166c7f JS	285	.prepare = ac97_analog_prepare,
	286	};
	287
85e7652d	288	static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
3c166c7f	289	.prepare = ac97_digital_prepare,
3c166c7f JS	290	};
3c166c7f JS	291
f0fba2ad	292	static struct snd_soc_dai_driver stac9766_dai[] = {
3c166c7f	293	{
f0fba2ad	294	.name = "stac9766-hifi-analog",
3c166c7f JS	295
	296	/* stream cababilities */
	297	.playback = {
	298	.stream_name = "stac9766 analog",
	299	.channels_min = 1,
	300	.channels_max = 2,
	301	.rates = SNDRV_PCM_RATE_8000_48000,
	302	.formats = SND_SOC_STD_AC97_FMTS,
	303	},
	304	.capture = {
	305	.stream_name = "stac9766 analog",
	306	.channels_min = 1,
	307	.channels_max = 2,
	308	.rates = SNDRV_PCM_RATE_8000_48000,
	309	.formats = SND_SOC_STD_AC97_FMTS,
	310	},
	311	/* alsa ops */
	312	.ops = &stac9766_dai_ops_analog,
	313	},
	314	{
f0fba2ad	315	.name = "stac9766-hifi-IEC958",
3c166c7f JS	316
	317	/* stream cababilities */
	318	.playback = {
	319	.stream_name = "stac9766 IEC958",
	320	.channels_min = 1,
	321	.channels_max = 2,
	322	.rates = SNDRV_PCM_RATE_32000 \| \
	323	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000,
	324	.formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
	325	},
	326	/* alsa ops */
	327	.ops = &stac9766_dai_ops_digital,
05e1efa2 MB	328	}
05e1efa2 MB	329	};
3c166c7f	330
f0fba2ad	331	static int stac9766_codec_probe(struct snd_soc_codec *codec)
3c166c7f	332	{
358a8bb5	333	struct snd_ac97 *ac97;
3c166c7f JS	334	int ret = 0;
3c166c7f JS	335
358a8bb5 LPC	336	ac97 = snd_soc_new_ac97_codec(codec);
	337	if (IS_ERR(ac97))
	338	return PTR_ERR(ac97);
	339
	340	snd_soc_codec_set_drvdata(codec, ac97);
3c166c7f	341
3c166c7f JS	342	/* do a cold reset for the controller and then try
	343	* a warm reset followed by an optional cold reset for codec */
	344	stac9766_reset(codec, 0);
	345	ret = stac9766_reset(codec, 1);
	346	if (ret < 0) {
93932aba	347	dev_err(codec->dev, "Failed to reset: AC97 link error\n");
f0fba2ad	348	goto codec_err;
3c166c7f JS	349	}
3c166c7f JS	350
3c166c7f JS	351	return 0;
3c166c7f JS	352
3c166c7f	353	codec_err:
358a8bb5	354	snd_soc_free_ac97_codec(ac97);
3c166c7f JS	355	return ret;
	356	}
	357
f0fba2ad	358	static int stac9766_codec_remove(struct snd_soc_codec *codec)
3c166c7f	359	{
358a8bb5 LPC	360	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
	361
	362	snd_soc_free_ac97_codec(ac97);
3c166c7f JS	363	return 0;
	364	}
	365
f0fba2ad	366	static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
8865051d LPC	367	.controls = stac9766_snd_ac97_controls,
8865051d LPC	368	.num_controls = ARRAY_SIZE(stac9766_snd_ac97_controls),
f0fba2ad LG	369	.write = stac9766_ac97_write,
	370	.read = stac9766_ac97_read,
	371	.set_bias_level = stac9766_set_bias_level,
4c07a43d	372	.suspend_bias_off = true,
3c166c7f JS	373	.probe = stac9766_codec_probe,
3c166c7f JS	374	.remove = stac9766_codec_remove,
3c166c7f	375	.resume = stac9766_codec_resume,
f031efe9	376	.reg_cache_size = ARRAY_SIZE(stac9766_reg),
f0fba2ad LG	377	.reg_word_size = sizeof(u16),
f0fba2ad LG	378	.reg_cache_step = 2,
13a2e06c	379	.reg_cache_default = stac9766_reg,
f0fba2ad LG	380	};
f0fba2ad LG	381
7a79e94e	382	static int stac9766_probe(struct platform_device *pdev)
f0fba2ad LG	383	{
	384	return snd_soc_register_codec(&pdev->dev,
	385	&soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
	386	}
	387
7a79e94e	388	static int stac9766_remove(struct platform_device *pdev)
f0fba2ad LG	389	{
	390	snd_soc_unregister_codec(&pdev->dev);
	391	return 0;
	392	}
	393
	394	static struct platform_driver stac9766_codec_driver = {
	395	.driver = {
	396	.name = "stac9766-codec",
f0fba2ad LG	397	},
	398
	399	.probe = stac9766_probe,
7a79e94e	400	.remove = stac9766_remove,
3c166c7f	401	};
f0fba2ad	402
5bbcc3c0	403	module_platform_driver(stac9766_codec_driver);
3c166c7f	404
3c166c7f JS	405	MODULE_DESCRIPTION("ASoC stac9766 driver");
	406	MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
	407	MODULE_LICENSE("GPL");