[deliverable/linux.git] / sound / soc / codecs / tlv320aic26.c

/*
 * Texas Instruments TLV320AIC26 low power audio CODEC
 * ALSA SoC CODEC driver
 *
 * Copyright (C) 2008 Secret Lab Technologies Ltd.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/sysfs.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 "tlv320aic26.h"

MODULE_DESCRIPTION("ASoC TLV320AIC26 codec driver");
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_LICENSE("GPL");

/* AIC26 driver private data */
struct aic26 {
	struct spi_device *spi;
	struct regmap *regmap;
	struct snd_soc_codec *codec;
	int master;
	int datfm;
	int mclk;

	/* Keyclick parameters */
	int keyclick_amplitude;
	int keyclick_freq;
	int keyclick_len;
};

static const struct snd_soc_dapm_widget tlv320aic26_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("MICIN"),
SND_SOC_DAPM_INPUT("AUX"),

SND_SOC_DAPM_OUTPUT("HPL"),
SND_SOC_DAPM_OUTPUT("HPR"),
};

static const struct snd_soc_dapm_route tlv320aic26_dapm_routes[] = {
	{ "Capture", NULL, "MICIN" },
	{ "Capture", NULL, "AUX" },

	{ "HPL", NULL, "Playback" },
	{ "HPR", NULL, "Playback" },
};

/* ---------------------------------------------------------------------
 * Digital Audio Interface Operations
 */
static int aic26_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 aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
	int fsref, divisor, wlen, pval, jval, dval, qval;
	u16 reg;

	dev_dbg(&aic26->spi->dev, "aic26_hw_params(substream=%p, params=%p)\n",
		substream, params);
	dev_dbg(&aic26->spi->dev, "rate=%i width=%d\n", params_rate(params),
		params_width(params));

	switch (params_rate(params)) {
	case 8000:  fsref = 48000; divisor = AIC26_DIV_6; break;
	case 11025: fsref = 44100; divisor = AIC26_DIV_4; break;
	case 12000: fsref = 48000; divisor = AIC26_DIV_4; break;
	case 16000: fsref = 48000; divisor = AIC26_DIV_3; break;
	case 22050: fsref = 44100; divisor = AIC26_DIV_2; break;
	case 24000: fsref = 48000; divisor = AIC26_DIV_2; break;
	case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break;
	case 44100: fsref = 44100; divisor = AIC26_DIV_1; break;
	case 48000: fsref = 48000; divisor = AIC26_DIV_1; break;
	default:
		dev_dbg(&aic26->spi->dev, "bad rate\n"); return -EINVAL;
	}

	/* select data word length */
	switch (params_width(params)) {
	case 8:  wlen = AIC26_WLEN_16; break;
	case 16: wlen = AIC26_WLEN_16; break;
	case 24: wlen = AIC26_WLEN_24; break;
	case 32: wlen = AIC26_WLEN_32; break;
	default:
		dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	}

	/**
	 * Configure PLL
	 * fsref = (mclk * PLLM) / 2048
	 * where PLLM = J.DDDD (DDDD register ranges from 0 to 9999, decimal)
	 */
	pval = 1;
	/* compute J portion of multiplier */
	jval = fsref / (aic26->mclk / 2048);
	/* compute fractional DDDD component of multiplier */
	dval = fsref - (jval * (aic26->mclk / 2048));
	dval = (10000 * dval) / (aic26->mclk / 2048);
	dev_dbg(&aic26->spi->dev, "Setting PLLM to %d.%04d\n", jval, dval);
	qval = 0;
	reg = 0x8000 | qval << 11 | pval << 8 | jval << 2;
	snd_soc_write(codec, AIC26_REG_PLL_PROG1, reg);
	reg = dval << 2;
	snd_soc_write(codec, AIC26_REG_PLL_PROG2, reg);

	/* Audio Control 3 (master mode, fsref rate) */
	if (aic26->master)
		reg = 0x0800;
	if (fsref == 48000)
		reg = 0x2000;
	snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL3, 0xf800, reg);

	/* Audio Control 1 (FSref divisor) */
	reg = wlen | aic26->datfm | (divisor << 3) | divisor;
	snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL1, 0xfff, reg);

	return 0;
}

/**
 * aic26_mute - Mute control to reduce noise when changing audio format
 */
static int aic26_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_codec *codec = dai->codec;
	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
	u16 reg;

	dev_dbg(&aic26->spi->dev, "aic26_mute(dai=%p, mute=%i)\n",
		dai, mute);

	if (mute)
		reg = 0x8080;
	else
		reg = 0;
	snd_soc_update_bits(codec, AIC26_REG_DAC_GAIN, 0x8000, reg);

	return 0;
}

static int aic26_set_sysclk(struct snd_soc_dai *codec_dai,
			    int clk_id, unsigned int freq, int dir)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);

	dev_dbg(&aic26->spi->dev, "aic26_set_sysclk(dai=%p, clk_id==%i,"
		" freq=%i, dir=%i)\n",
		codec_dai, clk_id, freq, dir);

	/* MCLK needs to fall between 2MHz and 50 MHz */
	if ((freq < 2000000) || (freq > 50000000))
		return -EINVAL;

	aic26->mclk = freq;
	return 0;
}

static int aic26_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
	struct snd_soc_codec *codec = codec_dai->codec;
	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);

	dev_dbg(&aic26->spi->dev, "aic26_set_fmt(dai=%p, fmt==%i)\n",
		codec_dai, fmt);

	/* set master/slave audio interface */
	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM: aic26->master = 1; break;
	case SND_SOC_DAIFMT_CBS_CFS: aic26->master = 0; break;
	default:
		dev_dbg(&aic26->spi->dev, "bad master\n"); return -EINVAL;
	}

	/* interface format */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:     aic26->datfm = AIC26_DATFM_I2S; break;
	case SND_SOC_DAIFMT_DSP_A:   aic26->datfm = AIC26_DATFM_DSP; break;
	case SND_SOC_DAIFMT_RIGHT_J: aic26->datfm = AIC26_DATFM_RIGHTJ; break;
	case SND_SOC_DAIFMT_LEFT_J:  aic26->datfm = AIC26_DATFM_LEFTJ; break;
	default:
		dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	}

	return 0;
}

/* ---------------------------------------------------------------------
 * Digital Audio Interface Definition
 */
#define AIC26_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)
#define AIC26_FORMATS	(SNDRV_PCM_FMTBIT_S8     | SNDRV_PCM_FMTBIT_S16_BE |\
			 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)

static const struct snd_soc_dai_ops aic26_dai_ops = {
	.hw_params	= aic26_hw_params,
	.digital_mute	= aic26_mute,
	.set_sysclk	= aic26_set_sysclk,
	.set_fmt	= aic26_set_fmt,
};

static struct snd_soc_dai_driver aic26_dai = {
	.name = "tlv320aic26-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = AIC26_RATES,
		.formats = AIC26_FORMATS,
	},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 2,
		.channels_max = 2,
		.rates = AIC26_RATES,
		.formats = AIC26_FORMATS,
	},
	.ops = &aic26_dai_ops,
};

/* ---------------------------------------------------------------------
 * ALSA controls
 */
static const char *aic26_capture_src_text[] = {"Mic", "Aux"};
static SOC_ENUM_SINGLE_DECL(aic26_capture_src_enum,
			    AIC26_REG_AUDIO_CTRL1, 12,
			    aic26_capture_src_text);

static const struct snd_kcontrol_new aic26_snd_controls[] = {
	/* Output */
	SOC_DOUBLE("PCM Playback Volume", AIC26_REG_DAC_GAIN, 8, 0, 0x7f, 1),
	SOC_DOUBLE("PCM Playback Switch", AIC26_REG_DAC_GAIN, 15, 7, 1, 1),
	SOC_SINGLE("PCM Capture Volume", AIC26_REG_ADC_GAIN, 8, 0x7f, 0),
	SOC_SINGLE("PCM Capture Mute", AIC26_REG_ADC_GAIN, 15, 1, 1),
	SOC_SINGLE("Keyclick activate", AIC26_REG_AUDIO_CTRL2, 15, 0x1, 0),
	SOC_SINGLE("Keyclick amplitude", AIC26_REG_AUDIO_CTRL2, 12, 0x7, 0),
	SOC_SINGLE("Keyclick frequency", AIC26_REG_AUDIO_CTRL2, 8, 0x7, 0),
	SOC_SINGLE("Keyclick period", AIC26_REG_AUDIO_CTRL2, 4, 0xf, 0),
	SOC_ENUM("Capture Source", aic26_capture_src_enum),
};

/* ---------------------------------------------------------------------
 * SPI device portion of driver: sysfs files for debugging
 */

static ssize_t aic26_keyclick_show(struct device *dev,
				   struct device_attribute *attr, char *buf)
{
	struct aic26 *aic26 = dev_get_drvdata(dev);
	int val, amp, freq, len;

	val = snd_soc_read(aic26->codec, AIC26_REG_AUDIO_CTRL2);
	amp = (val >> 12) & 0x7;
	freq = (125 << ((val >> 8) & 0x7)) >> 1;
	len = 2 * (1 + ((val >> 4) & 0xf));

	return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len);
}

/* Any write to the keyclick attribute will trigger the keyclick event */
static ssize_t aic26_keyclick_set(struct device *dev,
				  struct device_attribute *attr,
				  const char *buf, size_t count)
{
	struct aic26 *aic26 = dev_get_drvdata(dev);

	snd_soc_update_bits(aic26->codec, AIC26_REG_AUDIO_CTRL2,
			    0x8000, 0x800);

	return count;
}

static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set);

/* ---------------------------------------------------------------------
 * SoC CODEC portion of driver: probe and release routines
 */
static int aic26_probe(struct snd_soc_codec *codec)
{
	struct aic26 *aic26 = dev_get_drvdata(codec->dev);
	int ret, reg;

	aic26->codec = codec;

	/* Reset the codec to power on defaults */
	snd_soc_write(codec, AIC26_REG_RESET, 0xBB00);

	/* Power up CODEC */
	snd_soc_write(codec, AIC26_REG_POWER_CTRL, 0);

	/* Audio Control 3 (master mode, fsref rate) */
	reg = snd_soc_read(codec, AIC26_REG_AUDIO_CTRL3);
	reg &= ~0xf800;
	reg |= 0x0800; /* set master mode */
	snd_soc_write(codec, AIC26_REG_AUDIO_CTRL3, reg);

	/* Register the sysfs files for debugging */
	/* Create SysFS files */
	ret = device_create_file(codec->dev, &dev_attr_keyclick);
	if (ret)
		dev_info(codec->dev, "error creating sysfs files\n");

	return 0;
}

static struct snd_soc_codec_driver aic26_soc_codec_dev = {
	.probe = aic26_probe,
	.component_driver = {
		.controls		= aic26_snd_controls,
		.num_controls		= ARRAY_SIZE(aic26_snd_controls),
		.dapm_widgets		= tlv320aic26_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(tlv320aic26_dapm_widgets),
		.dapm_routes		= tlv320aic26_dapm_routes,
		.num_dapm_routes	= ARRAY_SIZE(tlv320aic26_dapm_routes),
	},
};

static const struct regmap_config aic26_regmap = {
	.reg_bits = 16,
	.val_bits = 16,
};

/* ---------------------------------------------------------------------
 * SPI device portion of driver: probe and release routines and SPI
 * 				 driver registration.
 */
static int aic26_spi_probe(struct spi_device *spi)
{
	struct aic26 *aic26;
	int ret;

	dev_dbg(&spi->dev, "probing tlv320aic26 spi device\n");

	/* Allocate driver data */
	aic26 = devm_kzalloc(&spi->dev, sizeof *aic26, GFP_KERNEL);
	if (!aic26)
		return -ENOMEM;

	aic26->regmap = devm_regmap_init_spi(spi, &aic26_regmap);
	if (IS_ERR(aic26->regmap))
		return PTR_ERR(aic26->regmap);

	/* Initialize the driver data */
	aic26->spi = spi;
	dev_set_drvdata(&spi->dev, aic26);
	aic26->master = 1;

	ret = snd_soc_register_codec(&spi->dev,
			&aic26_soc_codec_dev, &aic26_dai, 1);
	return ret;
}

static int aic26_spi_remove(struct spi_device *spi)
{
	snd_soc_unregister_codec(&spi->dev);
	return 0;
}

static struct spi_driver aic26_spi = {
	.driver = {
		.name = "tlv320aic26-codec",
	},
	.probe = aic26_spi_probe,
	.remove = aic26_spi_remove,
};

module_spi_driver(aic26_spi);
Commit	Line	Data
d8e3bb73 GL	1	/*
	2	* Texas Instruments TLV320AIC26 low power audio CODEC
	3	* ALSA SoC CODEC driver
	4	*
	5	* Copyright (C) 2008 Secret Lab Technologies Ltd.
	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/moduleparam.h>
	10	#include <linux/init.h>
	11	#include <linux/delay.h>
	12	#include <linux/pm.h>
	13	#include <linux/device.h>
	14	#include <linux/sysfs.h>
	15	#include <linux/spi/spi.h>
5a0e3ad6	16	#include <linux/slab.h>
d8e3bb73 GL	17	#include <sound/core.h>
	18	#include <sound/pcm.h>
	19	#include <sound/pcm_params.h>
	20	#include <sound/soc.h>
d8e3bb73 GL	21	#include <sound/initval.h>
	22
	23	#include "tlv320aic26.h"
	24
	25	MODULE_DESCRIPTION("ASoC TLV320AIC26 codec driver");
	26	MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
	27	MODULE_LICENSE("GPL");
	28
	29	/* AIC26 driver private data */
	30	struct aic26 {
	31	struct spi_device *spi;
7fbdeb80	32	struct regmap *regmap;
f8f11795	33	struct snd_soc_codec *codec;
d8e3bb73 GL	34	int master;
	35	int datfm;
	36	int mclk;
	37
	38	/* Keyclick parameters */
	39	int keyclick_amplitude;
	40	int keyclick_freq;
	41	int keyclick_len;
	42	};
	43
4a11bc2f MB	44	static const struct snd_soc_dapm_widget tlv320aic26_dapm_widgets[] = {
	45	SND_SOC_DAPM_INPUT("MICIN"),
	46	SND_SOC_DAPM_INPUT("AUX"),
	47
	48	SND_SOC_DAPM_OUTPUT("HPL"),
	49	SND_SOC_DAPM_OUTPUT("HPR"),
	50	};
	51
	52	static const struct snd_soc_dapm_route tlv320aic26_dapm_routes[] = {
	53	{ "Capture", NULL, "MICIN" },
	54	{ "Capture", NULL, "AUX" },
	55
	56	{ "HPL", NULL, "Playback" },
	57	{ "HPR", NULL, "Playback" },
	58	};
	59
d8e3bb73 GL	60	/* ---------------------------------------------------------------------
	61	* Digital Audio Interface Operations
	62	*/
	63	static int aic26_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	64	struct snd_pcm_hw_params *params,
dee89c4d MB	65	struct snd_soc_dai *dai)
d8e3bb73	66	{
e6968a17	67	struct snd_soc_codec *codec = dai->codec;
d4a8ca24	68	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
d8e3bb73 GL	69	int fsref, divisor, wlen, pval, jval, dval, qval;
	70	u16 reg;
	71
	72	dev_dbg(&aic26->spi->dev, "aic26_hw_params(substream=%p, params=%p)\n",
	73	substream, params);
93d0ad8f MB	74	dev_dbg(&aic26->spi->dev, "rate=%i width=%d\n", params_rate(params),
93d0ad8f MB	75	params_width(params));
d8e3bb73 GL	76
	77	switch (params_rate(params)) {
	78	case 8000: fsref = 48000; divisor = AIC26_DIV_6; break;
	79	case 11025: fsref = 44100; divisor = AIC26_DIV_4; break;
	80	case 12000: fsref = 48000; divisor = AIC26_DIV_4; break;
	81	case 16000: fsref = 48000; divisor = AIC26_DIV_3; break;
	82	case 22050: fsref = 44100; divisor = AIC26_DIV_2; break;
	83	case 24000: fsref = 48000; divisor = AIC26_DIV_2; break;
	84	case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break;
	85	case 44100: fsref = 44100; divisor = AIC26_DIV_1; break;
	86	case 48000: fsref = 48000; divisor = AIC26_DIV_1; break;
	87	default:
	88	dev_dbg(&aic26->spi->dev, "bad rate\n"); return -EINVAL;
	89	}
	90
	91	/* select data word length */
93d0ad8f MB	92	switch (params_width(params)) {
	93	case 8: wlen = AIC26_WLEN_16; break;
	94	case 16: wlen = AIC26_WLEN_16; break;
	95	case 24: wlen = AIC26_WLEN_24; break;
	96	case 32: wlen = AIC26_WLEN_32; break;
d8e3bb73 GL	97	default:
	98	dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	99	}
	100
2aba76f0 MW	101	/**
	102	* Configure PLL
	103	* fsref = (mclk * PLLM) / 2048
	104	* where PLLM = J.DDDD (DDDD register ranges from 0 to 9999, decimal)
	105	*/
d8e3bb73	106	pval = 1;
2aba76f0 MW	107	/* compute J portion of multiplier */
	108	jval = fsref / (aic26->mclk / 2048);
	109	/* compute fractional DDDD component of multiplier */
	110	dval = fsref - (jval * (aic26->mclk / 2048));
	111	dval = (10000 * dval) / (aic26->mclk / 2048);
	112	dev_dbg(&aic26->spi->dev, "Setting PLLM to %d.%04d\n", jval, dval);
d8e3bb73 GL	113	qval = 0;
d8e3bb73 GL	114	reg = 0x8000 \| qval << 11 \| pval << 8 \| jval << 2;
12201398	115	snd_soc_write(codec, AIC26_REG_PLL_PROG1, reg);
d8e3bb73	116	reg = dval << 2;
12201398	117	snd_soc_write(codec, AIC26_REG_PLL_PROG2, reg);
d8e3bb73 GL	118
d8e3bb73 GL	119	/* Audio Control 3 (master mode, fsref rate) */
d8e3bb73	120	if (aic26->master)
5b0959d4	121	reg = 0x0800;
d8e3bb73	122	if (fsref == 48000)
5b0959d4 MB	123	reg = 0x2000;
5b0959d4 MB	124	snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL3, 0xf800, reg);
d8e3bb73 GL	125
d8e3bb73 GL	126	/* Audio Control 1 (FSref divisor) */
5b0959d4 MB	127	reg = wlen \| aic26->datfm \| (divisor << 3) \| divisor;
5b0959d4 MB	128	snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL1, 0xfff, reg);
d8e3bb73 GL	129
	130	return 0;
	131	}
	132
	133	/**
	134	* aic26_mute - Mute control to reduce noise when changing audio format
	135	*/
	136	static int aic26_mute(struct snd_soc_dai *dai, int mute)
	137	{
	138	struct snd_soc_codec *codec = dai->codec;
d4a8ca24	139	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
5b0959d4	140	u16 reg;
d8e3bb73 GL	141
	142	dev_dbg(&aic26->spi->dev, "aic26_mute(dai=%p, mute=%i)\n",
	143	dai, mute);
	144
	145	if (mute)
5b0959d4	146	reg = 0x8080;
d8e3bb73	147	else
5b0959d4 MB	148	reg = 0;
5b0959d4 MB	149	snd_soc_update_bits(codec, AIC26_REG_DAC_GAIN, 0x8000, reg);
d8e3bb73 GL	150
	151	return 0;
	152	}
	153
	154	static int aic26_set_sysclk(struct snd_soc_dai *codec_dai,
	155	int clk_id, unsigned int freq, int dir)
	156	{
	157	struct snd_soc_codec *codec = codec_dai->codec;
d4a8ca24	158	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
d8e3bb73 GL	159
	160	dev_dbg(&aic26->spi->dev, "aic26_set_sysclk(dai=%p, clk_id==%i,"
	161	" freq=%i, dir=%i)\n",
	162	codec_dai, clk_id, freq, dir);
	163
	164	/* MCLK needs to fall between 2MHz and 50 MHz */
	165	if ((freq < 2000000) \|\| (freq > 50000000))
	166	return -EINVAL;
	167
	168	aic26->mclk = freq;
	169	return 0;
	170	}
	171
	172	static int aic26_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
	173	{
	174	struct snd_soc_codec *codec = codec_dai->codec;
d4a8ca24	175	struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec);
d8e3bb73 GL	176
	177	dev_dbg(&aic26->spi->dev, "aic26_set_fmt(dai=%p, fmt==%i)\n",
	178	codec_dai, fmt);
	179
	180	/* set master/slave audio interface */
	181	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	182	case SND_SOC_DAIFMT_CBM_CFM: aic26->master = 1; break;
	183	case SND_SOC_DAIFMT_CBS_CFS: aic26->master = 0; break;
	184	default:
	185	dev_dbg(&aic26->spi->dev, "bad master\n"); return -EINVAL;
	186	}
	187
	188	/* interface format */
	189	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	190	case SND_SOC_DAIFMT_I2S: aic26->datfm = AIC26_DATFM_I2S; break;
	191	case SND_SOC_DAIFMT_DSP_A: aic26->datfm = AIC26_DATFM_DSP; break;
	192	case SND_SOC_DAIFMT_RIGHT_J: aic26->datfm = AIC26_DATFM_RIGHTJ; break;
	193	case SND_SOC_DAIFMT_LEFT_J: aic26->datfm = AIC26_DATFM_LEFTJ; break;
	194	default:
	195	dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	196	}
	197
	198	return 0;
	199	}
	200
	201	/* ---------------------------------------------------------------------
	202	* Digital Audio Interface Definition
	203	*/
	204	#define AIC26_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	205	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \|\
	206	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \|\
	207	SNDRV_PCM_RATE_48000)
	208	#define AIC26_FORMATS (SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_BE \|\
	209	SNDRV_PCM_FMTBIT_S24_BE \| SNDRV_PCM_FMTBIT_S32_BE)
	210
85e7652d	211	static const struct snd_soc_dai_ops aic26_dai_ops = {
6335d055 EM	212	.hw_params = aic26_hw_params,
	213	.digital_mute = aic26_mute,
	214	.set_sysclk = aic26_set_sysclk,
	215	.set_fmt = aic26_set_fmt,
	216	};
	217
f0fba2ad LG	218	static struct snd_soc_dai_driver aic26_dai = {
f0fba2ad LG	219	.name = "tlv320aic26-hifi",
d8e3bb73 GL	220	.playback = {
	221	.stream_name = "Playback",
	222	.channels_min = 2,
	223	.channels_max = 2,
	224	.rates = AIC26_RATES,
	225	.formats = AIC26_FORMATS,
	226	},
	227	.capture = {
	228	.stream_name = "Capture",
	229	.channels_min = 2,
	230	.channels_max = 2,
	231	.rates = AIC26_RATES,
	232	.formats = AIC26_FORMATS,
	233	},
6335d055	234	.ops = &aic26_dai_ops,
d8e3bb73	235	};
d8e3bb73 GL	236
	237	/* ---------------------------------------------------------------------
	238	* ALSA controls
	239	*/
	240	static const char *aic26_capture_src_text[] = {"Mic", "Aux"};
6900ab55 TI	241	static SOC_ENUM_SINGLE_DECL(aic26_capture_src_enum,
	242	AIC26_REG_AUDIO_CTRL1, 12,
	243	aic26_capture_src_text);
d8e3bb73 GL	244
	245	static const struct snd_kcontrol_new aic26_snd_controls[] = {
	246	/* Output */
	247	SOC_DOUBLE("PCM Playback Volume", AIC26_REG_DAC_GAIN, 8, 0, 0x7f, 1),
	248	SOC_DOUBLE("PCM Playback Switch", AIC26_REG_DAC_GAIN, 15, 7, 1, 1),
	249	SOC_SINGLE("PCM Capture Volume", AIC26_REG_ADC_GAIN, 8, 0x7f, 0),
	250	SOC_SINGLE("PCM Capture Mute", AIC26_REG_ADC_GAIN, 15, 1, 1),
	251	SOC_SINGLE("Keyclick activate", AIC26_REG_AUDIO_CTRL2, 15, 0x1, 0),
	252	SOC_SINGLE("Keyclick amplitude", AIC26_REG_AUDIO_CTRL2, 12, 0x7, 0),
	253	SOC_SINGLE("Keyclick frequency", AIC26_REG_AUDIO_CTRL2, 8, 0x7, 0),
	254	SOC_SINGLE("Keyclick period", AIC26_REG_AUDIO_CTRL2, 4, 0xf, 0),
	255	SOC_ENUM("Capture Source", aic26_capture_src_enum),
	256	};
	257
d8e3bb73 GL	258	/* ---------------------------------------------------------------------
	259	* SPI device portion of driver: sysfs files for debugging
	260	*/
	261
	262	static ssize_t aic26_keyclick_show(struct device *dev,
	263	struct device_attribute attr, char buf)
	264	{
	265	struct aic26 *aic26 = dev_get_drvdata(dev);
	266	int val, amp, freq, len;
	267
5b0959d4	268	val = snd_soc_read(aic26->codec, AIC26_REG_AUDIO_CTRL2);
d8e3bb73 GL	269	amp = (val >> 12) & 0x7;
	270	freq = (125 << ((val >> 8) & 0x7)) >> 1;
	271	len = 2 * (1 + ((val >> 4) & 0xf));
	272
	273	return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len);
	274	}
	275
	276	/* Any write to the keyclick attribute will trigger the keyclick event */
	277	static ssize_t aic26_keyclick_set(struct device *dev,
	278	struct device_attribute *attr,
	279	const char *buf, size_t count)
	280	{
	281	struct aic26 *aic26 = dev_get_drvdata(dev);
d8e3bb73	282
5b0959d4 MB	283	snd_soc_update_bits(aic26->codec, AIC26_REG_AUDIO_CTRL2,
5b0959d4 MB	284	0x8000, 0x800);
d8e3bb73 GL	285
	286	return count;
	287	}
	288
9cce39a1	289	static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set);
d8e3bb73 GL	290
d8e3bb73 GL	291	/* ---------------------------------------------------------------------
f0fba2ad	292	* SoC CODEC portion of driver: probe and release routines
d8e3bb73	293	*/
f0fba2ad	294	static int aic26_probe(struct snd_soc_codec *codec)
d8e3bb73	295	{
f8f11795	296	struct aic26 *aic26 = dev_get_drvdata(codec->dev);
5b0959d4	297	int ret, reg;
d8e3bb73	298
f8f11795 LPC	299	aic26->codec = codec;
f8f11795 LPC	300
d8e3bb73	301	/* Reset the codec to power on defaults */
12201398	302	snd_soc_write(codec, AIC26_REG_RESET, 0xBB00);
d8e3bb73 GL	303
d8e3bb73 GL	304	/* Power up CODEC */
12201398	305	snd_soc_write(codec, AIC26_REG_POWER_CTRL, 0);
d8e3bb73 GL	306
d8e3bb73 GL	307	/* Audio Control 3 (master mode, fsref rate) */
12201398	308	reg = snd_soc_read(codec, AIC26_REG_AUDIO_CTRL3);
d8e3bb73 GL	309	reg &= ~0xf800;
d8e3bb73 GL	310	reg \|= 0x0800; /* set master mode */
12201398	311	snd_soc_write(codec, AIC26_REG_AUDIO_CTRL3, reg);
d8e3bb73	312
d8e3bb73 GL	313	/* Register the sysfs files for debugging */
d8e3bb73 GL	314	/* Create SysFS files */
f0fba2ad	315	ret = device_create_file(codec->dev, &dev_attr_keyclick);
64089b84	316	if (ret)
f0fba2ad	317	dev_info(codec->dev, "error creating sysfs files\n");
d8e3bb73	318
d8e3bb73 GL	319	return 0;
	320	}
	321
f0fba2ad LG	322	static struct snd_soc_codec_driver aic26_soc_codec_dev = {
f0fba2ad LG	323	.probe = aic26_probe,
40be1e60 KM	324	.component_driver = {
	325	.controls = aic26_snd_controls,
	326	.num_controls = ARRAY_SIZE(aic26_snd_controls),
	327	.dapm_widgets = tlv320aic26_dapm_widgets,
	328	.num_dapm_widgets = ARRAY_SIZE(tlv320aic26_dapm_widgets),
	329	.dapm_routes = tlv320aic26_dapm_routes,
	330	.num_dapm_routes = ARRAY_SIZE(tlv320aic26_dapm_routes),
	331	},
f0fba2ad LG	332	};
f0fba2ad LG	333
7fbdeb80 MB	334	static const struct regmap_config aic26_regmap = {
	335	.reg_bits = 16,
	336	.val_bits = 16,
	337	};
	338
f0fba2ad LG	339	/* ---------------------------------------------------------------------
	340	* SPI device portion of driver: probe and release routines and SPI
	341	* driver registration.
	342	*/
	343	static int aic26_spi_probe(struct spi_device *spi)
d8e3bb73	344	{
f0fba2ad LG	345	struct aic26 *aic26;
f0fba2ad LG	346	int ret;
d8e3bb73	347
f0fba2ad LG	348	dev_dbg(&spi->dev, "probing tlv320aic26 spi device\n");
	349
	350	/* Allocate driver data */
a8163023	351	aic26 = devm_kzalloc(&spi->dev, sizeof *aic26, GFP_KERNEL);
f0fba2ad LG	352	if (!aic26)
f0fba2ad LG	353	return -ENOMEM;
d8e3bb73	354
7fbdeb80 MB	355	aic26->regmap = devm_regmap_init_spi(spi, &aic26_regmap);
	356	if (IS_ERR(aic26->regmap))
	357	return PTR_ERR(aic26->regmap);
	358
f0fba2ad LG	359	/* Initialize the driver data */
	360	aic26->spi = spi;
	361	dev_set_drvdata(&spi->dev, aic26);
	362	aic26->master = 1;
	363
	364	ret = snd_soc_register_codec(&spi->dev,
	365	&aic26_soc_codec_dev, &aic26_dai, 1);
f0fba2ad	366	return ret;
f0fba2ad LG	367	}
	368
	369	static int aic26_spi_remove(struct spi_device *spi)
	370	{
	371	snd_soc_unregister_codec(&spi->dev);
d8e3bb73 GL	372	return 0;
	373	}
	374
	375	static struct spi_driver aic26_spi = {
	376	.driver = {
f0fba2ad	377	.name = "tlv320aic26-codec",
d8e3bb73 GL	378	},
	379	.probe = aic26_spi_probe,
	380	.remove = aic26_spi_remove,
	381	};
	382
9bb280a2	383	module_spi_driver(aic26_spi);