[linux-2.6-block.git] / sound / soc / codecs / tlv320aic26.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * 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_component *component;
	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_component *component = dai->component;
	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
	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_component_write(component, AIC26_REG_PLL_PROG1, reg);
	reg = dval << 2;
	snd_soc_component_write(component, AIC26_REG_PLL_PROG2, reg);

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

	/* Audio Control 1 (FSref divisor) */
	reg = wlen | aic26->datfm | (divisor << 3) | divisor;
	snd_soc_component_update_bits(component, 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_component *component = dai->component;
	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
	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_component_update_bits(component, 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_component *component = codec_dai->component;
	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);

	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_component *component = codec_dai->component;
	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);

	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_component_read32(aic26->component, 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_component_update_bits(aic26->component, 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_component *component)
{
	struct aic26 *aic26 = dev_get_drvdata(component->dev);
	int ret, reg;

	aic26->component = component;

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

	/* Power up CODEC */
	snd_soc_component_write(component, AIC26_REG_POWER_CTRL, 0);

	/* Audio Control 3 (master mode, fsref rate) */
	reg = snd_soc_component_read32(component, AIC26_REG_AUDIO_CTRL3);
	reg &= ~0xf800;
	reg |= 0x0800; /* set master mode */
	snd_soc_component_write(component, AIC26_REG_AUDIO_CTRL3, reg);

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

	return 0;
}

static const struct snd_soc_component_driver aic26_soc_component_dev = {
	.probe			= aic26_probe,
	.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),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

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 = devm_snd_soc_register_component(&spi->dev,
			&aic26_soc_component_dev, &aic26_dai, 1);
	return ret;
}

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

module_spi_driver(aic26_spi);
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
d8e3bb73 GL	2	/*
	3	* Texas Instruments TLV320AIC26 low power audio CODEC
	4	* ALSA SoC CODEC driver
	5	*
	6	* Copyright (C) 2008 Secret Lab Technologies Ltd.
	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/moduleparam.h>
	11	#include <linux/init.h>
	12	#include <linux/delay.h>
	13	#include <linux/pm.h>
	14	#include <linux/device.h>
	15	#include <linux/sysfs.h>
	16	#include <linux/spi/spi.h>
5a0e3ad6	17	#include <linux/slab.h>
d8e3bb73 GL	18	#include <sound/core.h>
	19	#include <sound/pcm.h>
	20	#include <sound/pcm_params.h>
	21	#include <sound/soc.h>
d8e3bb73 GL	22	#include <sound/initval.h>
	23
	24	#include "tlv320aic26.h"
	25
	26	MODULE_DESCRIPTION("ASoC TLV320AIC26 codec driver");
	27	MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
	28	MODULE_LICENSE("GPL");
	29
	30	/* AIC26 driver private data */
	31	struct aic26 {
	32	struct spi_device *spi;
7fbdeb80	33	struct regmap *regmap;
1514613a	34	struct snd_soc_component *component;
d8e3bb73 GL	35	int master;
	36	int datfm;
	37	int mclk;
	38
	39	/* Keyclick parameters */
	40	int keyclick_amplitude;
	41	int keyclick_freq;
	42	int keyclick_len;
	43	};
	44
4a11bc2f MB	45	static const struct snd_soc_dapm_widget tlv320aic26_dapm_widgets[] = {
	46	SND_SOC_DAPM_INPUT("MICIN"),
	47	SND_SOC_DAPM_INPUT("AUX"),
	48
	49	SND_SOC_DAPM_OUTPUT("HPL"),
	50	SND_SOC_DAPM_OUTPUT("HPR"),
	51	};
	52
	53	static const struct snd_soc_dapm_route tlv320aic26_dapm_routes[] = {
	54	{ "Capture", NULL, "MICIN" },
	55	{ "Capture", NULL, "AUX" },
	56
	57	{ "HPL", NULL, "Playback" },
	58	{ "HPR", NULL, "Playback" },
	59	};
	60
d8e3bb73 GL	61	/* ---------------------------------------------------------------------
	62	* Digital Audio Interface Operations
	63	*/
	64	static int aic26_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	65	struct snd_pcm_hw_params *params,
dee89c4d MB	66	struct snd_soc_dai *dai)
d8e3bb73	67	{
1514613a KM	68	struct snd_soc_component *component = dai->component;
1514613a KM	69	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
d8e3bb73 GL	70	int fsref, divisor, wlen, pval, jval, dval, qval;
	71	u16 reg;
	72
	73	dev_dbg(&aic26->spi->dev, "aic26_hw_params(substream=%p, params=%p)\n",
	74	substream, params);
93d0ad8f MB	75	dev_dbg(&aic26->spi->dev, "rate=%i width=%d\n", params_rate(params),
93d0ad8f MB	76	params_width(params));
d8e3bb73 GL	77
	78	switch (params_rate(params)) {
	79	case 8000: fsref = 48000; divisor = AIC26_DIV_6; break;
	80	case 11025: fsref = 44100; divisor = AIC26_DIV_4; break;
	81	case 12000: fsref = 48000; divisor = AIC26_DIV_4; break;
	82	case 16000: fsref = 48000; divisor = AIC26_DIV_3; break;
	83	case 22050: fsref = 44100; divisor = AIC26_DIV_2; break;
	84	case 24000: fsref = 48000; divisor = AIC26_DIV_2; break;
	85	case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break;
	86	case 44100: fsref = 44100; divisor = AIC26_DIV_1; break;
	87	case 48000: fsref = 48000; divisor = AIC26_DIV_1; break;
	88	default:
	89	dev_dbg(&aic26->spi->dev, "bad rate\n"); return -EINVAL;
	90	}
	91
	92	/* select data word length */
93d0ad8f MB	93	switch (params_width(params)) {
	94	case 8: wlen = AIC26_WLEN_16; break;
	95	case 16: wlen = AIC26_WLEN_16; break;
	96	case 24: wlen = AIC26_WLEN_24; break;
	97	case 32: wlen = AIC26_WLEN_32; break;
d8e3bb73 GL	98	default:
	99	dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	100	}
	101
2aba76f0 MW	102	/**
	103	* Configure PLL
	104	* fsref = (mclk * PLLM) / 2048
	105	* where PLLM = J.DDDD (DDDD register ranges from 0 to 9999, decimal)
	106	*/
d8e3bb73	107	pval = 1;
2aba76f0 MW	108	/* compute J portion of multiplier */
	109	jval = fsref / (aic26->mclk / 2048);
	110	/* compute fractional DDDD component of multiplier */
	111	dval = fsref - (jval * (aic26->mclk / 2048));
	112	dval = (10000 * dval) / (aic26->mclk / 2048);
	113	dev_dbg(&aic26->spi->dev, "Setting PLLM to %d.%04d\n", jval, dval);
d8e3bb73 GL	114	qval = 0;
d8e3bb73 GL	115	reg = 0x8000 \| qval << 11 \| pval << 8 \| jval << 2;
1514613a	116	snd_soc_component_write(component, AIC26_REG_PLL_PROG1, reg);
d8e3bb73	117	reg = dval << 2;
1514613a	118	snd_soc_component_write(component, AIC26_REG_PLL_PROG2, reg);
d8e3bb73 GL	119
d8e3bb73 GL	120	/* Audio Control 3 (master mode, fsref rate) */
d8e3bb73	121	if (aic26->master)
5b0959d4	122	reg = 0x0800;
d8e3bb73	123	if (fsref == 48000)
5b0959d4	124	reg = 0x2000;
1514613a	125	snd_soc_component_update_bits(component, AIC26_REG_AUDIO_CTRL3, 0xf800, reg);
d8e3bb73 GL	126
d8e3bb73 GL	127	/* Audio Control 1 (FSref divisor) */
5b0959d4	128	reg = wlen \| aic26->datfm \| (divisor << 3) \| divisor;
1514613a	129	snd_soc_component_update_bits(component, AIC26_REG_AUDIO_CTRL1, 0xfff, reg);
d8e3bb73 GL	130
	131	return 0;
	132	}
	133
	134	/**
	135	* aic26_mute - Mute control to reduce noise when changing audio format
	136	*/
	137	static int aic26_mute(struct snd_soc_dai *dai, int mute)
	138	{
1514613a KM	139	struct snd_soc_component *component = dai->component;
1514613a KM	140	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
5b0959d4	141	u16 reg;
d8e3bb73 GL	142
	143	dev_dbg(&aic26->spi->dev, "aic26_mute(dai=%p, mute=%i)\n",
	144	dai, mute);
	145
	146	if (mute)
5b0959d4	147	reg = 0x8080;
d8e3bb73	148	else
5b0959d4	149	reg = 0;
1514613a	150	snd_soc_component_update_bits(component, AIC26_REG_DAC_GAIN, 0x8000, reg);
d8e3bb73 GL	151
	152	return 0;
	153	}
	154
	155	static int aic26_set_sysclk(struct snd_soc_dai *codec_dai,
	156	int clk_id, unsigned int freq, int dir)
	157	{
1514613a KM	158	struct snd_soc_component *component = codec_dai->component;
1514613a KM	159	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
d8e3bb73 GL	160
	161	dev_dbg(&aic26->spi->dev, "aic26_set_sysclk(dai=%p, clk_id==%i,"
	162	" freq=%i, dir=%i)\n",
	163	codec_dai, clk_id, freq, dir);
	164
	165	/* MCLK needs to fall between 2MHz and 50 MHz */
	166	if ((freq < 2000000) \|\| (freq > 50000000))
	167	return -EINVAL;
	168
	169	aic26->mclk = freq;
	170	return 0;
	171	}
	172
	173	static int aic26_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
	174	{
1514613a KM	175	struct snd_soc_component *component = codec_dai->component;
1514613a KM	176	struct aic26 *aic26 = snd_soc_component_get_drvdata(component);
d8e3bb73 GL	177
	178	dev_dbg(&aic26->spi->dev, "aic26_set_fmt(dai=%p, fmt==%i)\n",
	179	codec_dai, fmt);
	180
	181	/* set master/slave audio interface */
	182	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	183	case SND_SOC_DAIFMT_CBM_CFM: aic26->master = 1; break;
	184	case SND_SOC_DAIFMT_CBS_CFS: aic26->master = 0; break;
	185	default:
	186	dev_dbg(&aic26->spi->dev, "bad master\n"); return -EINVAL;
	187	}
	188
	189	/* interface format */
	190	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	191	case SND_SOC_DAIFMT_I2S: aic26->datfm = AIC26_DATFM_I2S; break;
	192	case SND_SOC_DAIFMT_DSP_A: aic26->datfm = AIC26_DATFM_DSP; break;
	193	case SND_SOC_DAIFMT_RIGHT_J: aic26->datfm = AIC26_DATFM_RIGHTJ; break;
	194	case SND_SOC_DAIFMT_LEFT_J: aic26->datfm = AIC26_DATFM_LEFTJ; break;
	195	default:
	196	dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL;
	197	}
	198
	199	return 0;
	200	}
	201
	202	/* ---------------------------------------------------------------------
	203	* Digital Audio Interface Definition
	204	*/
	205	#define AIC26_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	206	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \|\
	207	SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \|\
	208	SNDRV_PCM_RATE_48000)
	209	#define AIC26_FORMATS (SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_BE \|\
	210	SNDRV_PCM_FMTBIT_S24_BE \| SNDRV_PCM_FMTBIT_S32_BE)
	211
85e7652d	212	static const struct snd_soc_dai_ops aic26_dai_ops = {
6335d055 EM	213	.hw_params = aic26_hw_params,
	214	.digital_mute = aic26_mute,
	215	.set_sysclk = aic26_set_sysclk,
	216	.set_fmt = aic26_set_fmt,
	217	};
	218
f0fba2ad LG	219	static struct snd_soc_dai_driver aic26_dai = {
f0fba2ad LG	220	.name = "tlv320aic26-hifi",
d8e3bb73 GL	221	.playback = {
	222	.stream_name = "Playback",
	223	.channels_min = 2,
	224	.channels_max = 2,
	225	.rates = AIC26_RATES,
	226	.formats = AIC26_FORMATS,
	227	},
	228	.capture = {
	229	.stream_name = "Capture",
	230	.channels_min = 2,
	231	.channels_max = 2,
	232	.rates = AIC26_RATES,
	233	.formats = AIC26_FORMATS,
	234	},
6335d055	235	.ops = &aic26_dai_ops,
d8e3bb73	236	};
d8e3bb73 GL	237
	238	/* ---------------------------------------------------------------------
	239	* ALSA controls
	240	*/
	241	static const char *aic26_capture_src_text[] = {"Mic", "Aux"};
6900ab55 TI	242	static SOC_ENUM_SINGLE_DECL(aic26_capture_src_enum,
	243	AIC26_REG_AUDIO_CTRL1, 12,
	244	aic26_capture_src_text);
d8e3bb73 GL	245
	246	static const struct snd_kcontrol_new aic26_snd_controls[] = {
	247	/* Output */
	248	SOC_DOUBLE("PCM Playback Volume", AIC26_REG_DAC_GAIN, 8, 0, 0x7f, 1),
	249	SOC_DOUBLE("PCM Playback Switch", AIC26_REG_DAC_GAIN, 15, 7, 1, 1),
	250	SOC_SINGLE("PCM Capture Volume", AIC26_REG_ADC_GAIN, 8, 0x7f, 0),
	251	SOC_SINGLE("PCM Capture Mute", AIC26_REG_ADC_GAIN, 15, 1, 1),
	252	SOC_SINGLE("Keyclick activate", AIC26_REG_AUDIO_CTRL2, 15, 0x1, 0),
	253	SOC_SINGLE("Keyclick amplitude", AIC26_REG_AUDIO_CTRL2, 12, 0x7, 0),
	254	SOC_SINGLE("Keyclick frequency", AIC26_REG_AUDIO_CTRL2, 8, 0x7, 0),
	255	SOC_SINGLE("Keyclick period", AIC26_REG_AUDIO_CTRL2, 4, 0xf, 0),
	256	SOC_ENUM("Capture Source", aic26_capture_src_enum),
	257	};
	258
d8e3bb73 GL	259	/* ---------------------------------------------------------------------
	260	* SPI device portion of driver: sysfs files for debugging
	261	*/
	262
	263	static ssize_t aic26_keyclick_show(struct device *dev,
	264	struct device_attribute attr, char buf)
	265	{
	266	struct aic26 *aic26 = dev_get_drvdata(dev);
	267	int val, amp, freq, len;
	268
1514613a	269	val = snd_soc_component_read32(aic26->component, AIC26_REG_AUDIO_CTRL2);
d8e3bb73 GL	270	amp = (val >> 12) & 0x7;
	271	freq = (125 << ((val >> 8) & 0x7)) >> 1;
	272	len = 2 * (1 + ((val >> 4) & 0xf));
	273
	274	return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len);
	275	}
	276
	277	/* Any write to the keyclick attribute will trigger the keyclick event */
	278	static ssize_t aic26_keyclick_set(struct device *dev,
	279	struct device_attribute *attr,
	280	const char *buf, size_t count)
	281	{
	282	struct aic26 *aic26 = dev_get_drvdata(dev);
d8e3bb73	283
1514613a	284	snd_soc_component_update_bits(aic26->component, AIC26_REG_AUDIO_CTRL2,
5b0959d4	285	0x8000, 0x800);
d8e3bb73 GL	286
	287	return count;
	288	}
	289
9cce39a1	290	static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set);
d8e3bb73 GL	291
d8e3bb73 GL	292	/* ---------------------------------------------------------------------
f0fba2ad	293	* SoC CODEC portion of driver: probe and release routines
d8e3bb73	294	*/
1514613a	295	static int aic26_probe(struct snd_soc_component *component)
d8e3bb73	296	{
1514613a	297	struct aic26 *aic26 = dev_get_drvdata(component->dev);
5b0959d4	298	int ret, reg;
d8e3bb73	299
1514613a	300	aic26->component = component;
f8f11795	301
d8e3bb73	302	/* Reset the codec to power on defaults */
1514613a	303	snd_soc_component_write(component, AIC26_REG_RESET, 0xBB00);
d8e3bb73 GL	304
d8e3bb73 GL	305	/* Power up CODEC */
1514613a	306	snd_soc_component_write(component, AIC26_REG_POWER_CTRL, 0);
d8e3bb73 GL	307
d8e3bb73 GL	308	/* Audio Control 3 (master mode, fsref rate) */
1514613a	309	reg = snd_soc_component_read32(component, AIC26_REG_AUDIO_CTRL3);
d8e3bb73 GL	310	reg &= ~0xf800;
d8e3bb73 GL	311	reg \|= 0x0800; /* set master mode */
1514613a	312	snd_soc_component_write(component, AIC26_REG_AUDIO_CTRL3, reg);
d8e3bb73	313
d8e3bb73 GL	314	/* Register the sysfs files for debugging */
d8e3bb73 GL	315	/* Create SysFS files */
1514613a	316	ret = device_create_file(component->dev, &dev_attr_keyclick);
64089b84	317	if (ret)
1514613a	318	dev_info(component->dev, "error creating sysfs files\n");
d8e3bb73	319
d8e3bb73 GL	320	return 0;
	321	}
	322
1514613a KM	323	static const struct snd_soc_component_driver aic26_soc_component_dev = {
	324	.probe = aic26_probe,
	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	.idle_bias_on = 1,
	332	.use_pmdown_time = 1,
	333	.endianness = 1,
	334	.non_legacy_dai_naming = 1,
f0fba2ad LG	335	};
f0fba2ad LG	336
7fbdeb80 MB	337	static const struct regmap_config aic26_regmap = {
	338	.reg_bits = 16,
	339	.val_bits = 16,
	340	};
	341
f0fba2ad LG	342	/* ---------------------------------------------------------------------
	343	* SPI device portion of driver: probe and release routines and SPI
	344	* driver registration.
	345	*/
	346	static int aic26_spi_probe(struct spi_device *spi)
d8e3bb73	347	{
f0fba2ad LG	348	struct aic26 *aic26;
f0fba2ad LG	349	int ret;
d8e3bb73	350
f0fba2ad LG	351	dev_dbg(&spi->dev, "probing tlv320aic26 spi device\n");
	352
	353	/* Allocate driver data */
a8163023	354	aic26 = devm_kzalloc(&spi->dev, sizeof *aic26, GFP_KERNEL);
f0fba2ad LG	355	if (!aic26)
f0fba2ad LG	356	return -ENOMEM;
d8e3bb73	357
7fbdeb80 MB	358	aic26->regmap = devm_regmap_init_spi(spi, &aic26_regmap);
	359	if (IS_ERR(aic26->regmap))
	360	return PTR_ERR(aic26->regmap);
	361
f0fba2ad LG	362	/* Initialize the driver data */
	363	aic26->spi = spi;
	364	dev_set_drvdata(&spi->dev, aic26);
	365	aic26->master = 1;
	366
1514613a KM	367	ret = devm_snd_soc_register_component(&spi->dev,
1514613a KM	368	&aic26_soc_component_dev, &aic26_dai, 1);
f0fba2ad	369	return ret;
f0fba2ad LG	370	}
f0fba2ad LG	371
d8e3bb73 GL	372	static struct spi_driver aic26_spi = {
d8e3bb73 GL	373	.driver = {
f0fba2ad	374	.name = "tlv320aic26-codec",
d8e3bb73 GL	375	},
d8e3bb73 GL	376	.probe = aic26_spi_probe,
d8e3bb73 GL	377	};
d8e3bb73 GL	378
9bb280a2	379	module_spi_driver(aic26_spi);