[thirdparty/kernel/stable.git] / sound / soc / codecs / pcm179x.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * PCM179X ASoC codec driver
 *
 * Copyright (c) Amarula Solutions B.V. 2013
 *
 *     Michael Trimarchi <michael@amarulasolutions.com>
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/device.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of.h>

#include "pcm179x.h"

#define PCM179X_DAC_VOL_LEFT	0x10
#define PCM179X_DAC_VOL_RIGHT	0x11
#define PCM179X_FMT_CONTROL	0x12
#define PCM179X_MODE_CONTROL	0x13
#define PCM179X_SOFT_MUTE	PCM179X_FMT_CONTROL

#define PCM179X_FMT_MASK	0x70
#define PCM179X_FMT_SHIFT	4
#define PCM179X_MUTE_MASK	0x01
#define PCM179X_MUTE_SHIFT	0
#define PCM179X_ATLD_ENABLE	(1 << 7)

static const struct reg_default pcm179x_reg_defaults[] = {
	{ 0x10, 0xff },
	{ 0x11, 0xff },
	{ 0x12, 0x50 },
	{ 0x13, 0x00 },
	{ 0x14, 0x00 },
	{ 0x15, 0x01 },
	{ 0x16, 0x00 },
	{ 0x17, 0x00 },
};

static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg)
{
	return reg >= 0x10 && reg <= 0x17;
}

static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg)
{
	bool accessible;

	accessible = pcm179x_accessible_reg(dev, reg);

	return accessible && reg != 0x16 && reg != 0x17;
}

struct pcm179x_private {
	struct regmap *regmap;
	unsigned int format;
	unsigned int rate;
};

static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai,
                             unsigned int format)
{
	struct snd_soc_component *component = codec_dai->component;
	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);

	priv->format = format;

	return 0;
}

static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute)
{
	struct snd_soc_component *component = dai->component;
	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
	int ret;

	ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE,
				 PCM179X_MUTE_MASK, !!mute);
	if (ret < 0)
		return ret;

	return 0;
}

static int pcm179x_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 pcm179x_private *priv = snd_soc_component_get_drvdata(component);
	int val = 0, ret;

	priv->rate = params_rate(params);

	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_RIGHT_J:
		switch (params_width(params)) {
		case 24:
		case 32:
			val = 2;
			break;
		case 16:
			val = 0;
			break;
		default:
			return -EINVAL;
		}
		break;
	case SND_SOC_DAIFMT_I2S:
		switch (params_width(params)) {
		case 24:
		case 32:
			val = 5;
			break;
		case 16:
			val = 4;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		dev_err(component->dev, "Invalid DAI format\n");
		return -EINVAL;
	}

	val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE;

	ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL,
				 PCM179X_FMT_MASK | PCM179X_ATLD_ENABLE, val);
	if (ret < 0)
		return ret;

	return 0;
}

static const struct snd_soc_dai_ops pcm179x_dai_ops = {
	.set_fmt	= pcm179x_set_dai_fmt,
	.hw_params	= pcm179x_hw_params,
	.digital_mute	= pcm179x_digital_mute,
};

static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1);

static const struct snd_kcontrol_new pcm179x_controls[] = {
	SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT,
			 PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
			 pcm179x_dac_tlv),
	SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0),
	SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0),
};

static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("IOUTL+"),
SND_SOC_DAPM_OUTPUT("IOUTL-"),
SND_SOC_DAPM_OUTPUT("IOUTR+"),
SND_SOC_DAPM_OUTPUT("IOUTR-"),
};

static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = {
	{ "IOUTL+", NULL, "Playback" },
	{ "IOUTL-", NULL, "Playback" },
	{ "IOUTR+", NULL, "Playback" },
	{ "IOUTR-", NULL, "Playback" },
};

static struct snd_soc_dai_driver pcm179x_dai = {
	.name = "pcm179x-hifi",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 2,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_CONTINUOUS,
		.rate_min = 10000,
		.rate_max = 200000,
		.formats = PCM1792A_FORMATS, },
	.ops = &pcm179x_dai_ops,
};

const struct regmap_config pcm179x_regmap_config = {
	.reg_bits		= 8,
	.val_bits		= 8,
	.max_register		= 23,
	.reg_defaults		= pcm179x_reg_defaults,
	.num_reg_defaults	= ARRAY_SIZE(pcm179x_reg_defaults),
	.writeable_reg		= pcm179x_writeable_reg,
	.readable_reg		= pcm179x_accessible_reg,
};
EXPORT_SYMBOL_GPL(pcm179x_regmap_config);

static const struct snd_soc_component_driver soc_component_dev_pcm179x = {
	.controls		= pcm179x_controls,
	.num_controls		= ARRAY_SIZE(pcm179x_controls),
	.dapm_widgets		= pcm179x_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(pcm179x_dapm_widgets),
	.dapm_routes		= pcm179x_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(pcm179x_dapm_routes),
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

int pcm179x_common_init(struct device *dev, struct regmap *regmap)
{
	struct pcm179x_private *pcm179x;

	pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private),
				GFP_KERNEL);
	if (!pcm179x)
		return -ENOMEM;

	pcm179x->regmap = regmap;
	dev_set_drvdata(dev, pcm179x);

	return devm_snd_soc_register_component(dev,
			&soc_component_dev_pcm179x, &pcm179x_dai, 1);
}
EXPORT_SYMBOL_GPL(pcm179x_common_init);

MODULE_DESCRIPTION("ASoC PCM179X driver");
MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
c942fddf	1	// SPDX-License-Identifier: GPL-2.0-or-later
13b02fa0	2	/*
823733b9	3	* PCM179X ASoC codec driver
13b02fa0 MT	4	*
	5	* Copyright (c) Amarula Solutions B.V. 2013
	6	*
	7	* Michael Trimarchi <michael@amarulasolutions.com>
13b02fa0 MT	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/slab.h>
	12	#include <linux/kernel.h>
	13	#include <linux/device.h>
13b02fa0 MT	14
	15	#include <sound/core.h>
	16	#include <sound/pcm.h>
	17	#include <sound/pcm_params.h>
	18	#include <sound/initval.h>
	19	#include <sound/soc.h>
	20	#include <sound/tlv.h>
4b2fa512	21	#include <linux/of.h>
13b02fa0	22
823733b9	23	#include "pcm179x.h"
13b02fa0	24
823733b9 MT	25	#define PCM179X_DAC_VOL_LEFT 0x10
	26	#define PCM179X_DAC_VOL_RIGHT 0x11
	27	#define PCM179X_FMT_CONTROL 0x12
	28	#define PCM179X_MODE_CONTROL 0x13
	29	#define PCM179X_SOFT_MUTE PCM179X_FMT_CONTROL
13b02fa0	30
823733b9 MT	31	#define PCM179X_FMT_MASK 0x70
	32	#define PCM179X_FMT_SHIFT 4
	33	#define PCM179X_MUTE_MASK 0x01
	34	#define PCM179X_MUTE_SHIFT 0
	35	#define PCM179X_ATLD_ENABLE (1 << 7)
13b02fa0	36
823733b9	37	static const struct reg_default pcm179x_reg_defaults[] = {
13b02fa0 MT	38	{ 0x10, 0xff },
	39	{ 0x11, 0xff },
	40	{ 0x12, 0x50 },
	41	{ 0x13, 0x00 },
	42	{ 0x14, 0x00 },
	43	{ 0x15, 0x01 },
	44	{ 0x16, 0x00 },
	45	{ 0x17, 0x00 },
	46	};
	47
823733b9	48	static bool pcm179x_accessible_reg(struct device *dev, unsigned int reg)
13b02fa0 MT	49	{
	50	return reg >= 0x10 && reg <= 0x17;
	51	}
	52
a074ae0e	53	static bool pcm179x_writeable_reg(struct device *dev, unsigned int reg)
13b02fa0 MT	54	{
	55	bool accessible;
	56
823733b9	57	accessible = pcm179x_accessible_reg(dev, reg);
13b02fa0 MT	58
	59	return accessible && reg != 0x16 && reg != 0x17;
	60	}
	61
823733b9	62	struct pcm179x_private {
13b02fa0 MT	63	struct regmap *regmap;
	64	unsigned int format;
	65	unsigned int rate;
	66	};
	67
823733b9	68	static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai,
13b02fa0 MT	69	unsigned int format)
13b02fa0 MT	70	{
db0a11d0 KM	71	struct snd_soc_component *component = codec_dai->component;
db0a11d0 KM	72	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
13b02fa0 MT	73
	74	priv->format = format;
	75
	76	return 0;
	77	}
	78
823733b9	79	static int pcm179x_digital_mute(struct snd_soc_dai *dai, int mute)
13b02fa0	80	{
db0a11d0 KM	81	struct snd_soc_component *component = dai->component;
db0a11d0 KM	82	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
13b02fa0 MT	83	int ret;
13b02fa0 MT	84
823733b9 MT	85	ret = regmap_update_bits(priv->regmap, PCM179X_SOFT_MUTE,
823733b9 MT	86	PCM179X_MUTE_MASK, !!mute);
13b02fa0 MT	87	if (ret < 0)
	88	return ret;
	89
	90	return 0;
	91	}
	92
823733b9	93	static int pcm179x_hw_params(struct snd_pcm_substream *substream,
13b02fa0 MT	94	struct snd_pcm_hw_params *params,
	95	struct snd_soc_dai *dai)
	96	{
db0a11d0 KM	97	struct snd_soc_component *component = dai->component;
db0a11d0 KM	98	struct pcm179x_private *priv = snd_soc_component_get_drvdata(component);
13b02fa0	99	int val = 0, ret;
13b02fa0 MT	100
	101	priv->rate = params_rate(params);
	102
	103	switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) {
	104	case SND_SOC_DAIFMT_RIGHT_J:
e48c6d7f MB	105	switch (params_width(params)) {
	106	case 24:
	107	case 32:
	108	val = 2;
	109	break;
	110	case 16:
	111	val = 0;
	112	break;
	113	default:
	114	return -EINVAL;
	115	}
13b02fa0 MT	116	break;
13b02fa0 MT	117	case SND_SOC_DAIFMT_I2S:
e48c6d7f MB	118	switch (params_width(params)) {
	119	case 24:
	120	case 32:
	121	val = 5;
	122	break;
	123	case 16:
	124	val = 4;
	125	break;
	126	default:
	127	return -EINVAL;
	128	}
13b02fa0 MT	129	break;
13b02fa0 MT	130	default:
db0a11d0	131	dev_err(component->dev, "Invalid DAI format\n");
13b02fa0 MT	132	return -EINVAL;
	133	}
	134
823733b9	135	val = val << PCM179X_FMT_SHIFT \| PCM179X_ATLD_ENABLE;
13b02fa0	136
823733b9 MT	137	ret = regmap_update_bits(priv->regmap, PCM179X_FMT_CONTROL,
823733b9 MT	138	PCM179X_FMT_MASK \| PCM179X_ATLD_ENABLE, val);
13b02fa0 MT	139	if (ret < 0)
	140	return ret;
	141
	142	return 0;
	143	}
	144
823733b9 MT	145	static const struct snd_soc_dai_ops pcm179x_dai_ops = {
	146	.set_fmt = pcm179x_set_dai_fmt,
	147	.hw_params = pcm179x_hw_params,
	148	.digital_mute = pcm179x_digital_mute,
13b02fa0 MT	149	};
13b02fa0 MT	150
823733b9	151	static const DECLARE_TLV_DB_SCALE(pcm179x_dac_tlv, -12000, 50, 1);
13b02fa0	152
823733b9 MT	153	static const struct snd_kcontrol_new pcm179x_controls[] = {
	154	SOC_DOUBLE_R_RANGE_TLV("DAC Playback Volume", PCM179X_DAC_VOL_LEFT,
	155	PCM179X_DAC_VOL_RIGHT, 0, 0xf, 0xff, 0,
	156	pcm179x_dac_tlv),
	157	SOC_SINGLE("DAC Invert Output Switch", PCM179X_MODE_CONTROL, 7, 1, 0),
	158	SOC_SINGLE("DAC Rolloff Filter Switch", PCM179X_MODE_CONTROL, 1, 1, 0),
13b02fa0 MT	159	};
13b02fa0 MT	160
823733b9	161	static const struct snd_soc_dapm_widget pcm179x_dapm_widgets[] = {
e7a5cb42 MB	162	SND_SOC_DAPM_OUTPUT("IOUTL+"),
	163	SND_SOC_DAPM_OUTPUT("IOUTL-"),
	164	SND_SOC_DAPM_OUTPUT("IOUTR+"),
	165	SND_SOC_DAPM_OUTPUT("IOUTR-"),
	166	};
	167
823733b9	168	static const struct snd_soc_dapm_route pcm179x_dapm_routes[] = {
e7a5cb42 MB	169	{ "IOUTL+", NULL, "Playback" },
	170	{ "IOUTL-", NULL, "Playback" },
	171	{ "IOUTR+", NULL, "Playback" },
	172	{ "IOUTR-", NULL, "Playback" },
	173	};
	174
823733b9 MT	175	static struct snd_soc_dai_driver pcm179x_dai = {
823733b9 MT	176	.name = "pcm179x-hifi",
13b02fa0 MT	177	.playback = {
	178	.stream_name = "Playback",
	179	.channels_min = 2,
	180	.channels_max = 2,
e0236f54 JS	181	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	182	.rate_min = 10000,
	183	.rate_max = 200000,
13b02fa0	184	.formats = PCM1792A_FORMATS, },
823733b9	185	.ops = &pcm179x_dai_ops,
13b02fa0 MT	186	};
13b02fa0 MT	187
1b347b68	188	const struct regmap_config pcm179x_regmap_config = {
13b02fa0 MT	189	.reg_bits = 8,
13b02fa0 MT	190	.val_bits = 8,
c92f66e2	191	.max_register = 23,
823733b9 MT	192	.reg_defaults = pcm179x_reg_defaults,
	193	.num_reg_defaults = ARRAY_SIZE(pcm179x_reg_defaults),
	194	.writeable_reg = pcm179x_writeable_reg,
	195	.readable_reg = pcm179x_accessible_reg,
13b02fa0	196	};
1b347b68	197	EXPORT_SYMBOL_GPL(pcm179x_regmap_config);
13b02fa0	198
db0a11d0 KM	199	static const struct snd_soc_component_driver soc_component_dev_pcm179x = {
	200	.controls = pcm179x_controls,
	201	.num_controls = ARRAY_SIZE(pcm179x_controls),
	202	.dapm_widgets = pcm179x_dapm_widgets,
	203	.num_dapm_widgets = ARRAY_SIZE(pcm179x_dapm_widgets),
	204	.dapm_routes = pcm179x_dapm_routes,
	205	.num_dapm_routes = ARRAY_SIZE(pcm179x_dapm_routes),
	206	.idle_bias_on = 1,
	207	.use_pmdown_time = 1,
	208	.endianness = 1,
	209	.non_legacy_dai_naming = 1,
13b02fa0 MT	210	};
13b02fa0 MT	211
1b347b68	212	int pcm179x_common_init(struct device dev, struct regmap regmap)
13b02fa0	213	{
823733b9	214	struct pcm179x_private *pcm179x;
13b02fa0	215
1b347b68	216	pcm179x = devm_kzalloc(dev, sizeof(struct pcm179x_private),
13b02fa0	217	GFP_KERNEL);
823733b9	218	if (!pcm179x)
13b02fa0 MT	219	return -ENOMEM;
13b02fa0 MT	220
1b347b68 JS	221	pcm179x->regmap = regmap;
1b347b68 JS	222	dev_set_drvdata(dev, pcm179x);
13b02fa0	223
db0a11d0 KM	224	return devm_snd_soc_register_component(dev,
db0a11d0 KM	225	&soc_component_dev_pcm179x, &pcm179x_dai, 1);
13b02fa0	226	}
1b347b68	227	EXPORT_SYMBOL_GPL(pcm179x_common_init);
13b02fa0	228
823733b9	229	MODULE_DESCRIPTION("ASoC PCM179X driver");
13b02fa0 MT	230	MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
13b02fa0 MT	231	MODULE_LICENSE("GPL");