[mirror_ubuntu-hirsute-kernel.git] / sound / soc / codecs / tpa6130a2.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
 *
 * Copyright (C) Nokia Corporation
 *
 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
 */

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/tpa6130a2-plat.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/regmap.h>

#include "tpa6130a2.h"

enum tpa_model {
	TPA6130A2,
	TPA6140A2,
};

/* This struct is used to save the context */
struct tpa6130a2_data {
	struct device *dev;
	struct regmap *regmap;
	struct regulator *supply;
	int power_gpio;
	enum tpa_model id;
};

static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
{
	int ret = 0, ret2;

	if (enable) {
		ret = regulator_enable(data->supply);
		if (ret != 0) {
			dev_err(data->dev,
				"Failed to enable supply: %d\n", ret);
			return ret;
		}
		/* Power on */
		if (data->power_gpio >= 0)
			gpio_set_value(data->power_gpio, 1);

		/* Sync registers */
		regcache_cache_only(data->regmap, false);
		ret = regcache_sync(data->regmap);
		if (ret != 0) {
			dev_err(data->dev,
				"Failed to sync registers: %d\n", ret);
			regcache_cache_only(data->regmap, true);
			if (data->power_gpio >= 0)
				gpio_set_value(data->power_gpio, 0);
			ret2 = regulator_disable(data->supply);
			if (ret2 != 0)
				dev_err(data->dev,
					"Failed to disable supply: %d\n", ret2);
			return ret;
		}
	} else {
		/* Powered off device does not retain registers. While device
		 * is off, any register updates (i.e. volume changes) should
		 * happen in cache only.
		 */
		regcache_mark_dirty(data->regmap);
		regcache_cache_only(data->regmap, true);

		/* Power off */
		if (data->power_gpio >= 0)
			gpio_set_value(data->power_gpio, 0);

		ret = regulator_disable(data->supply);
		if (ret != 0) {
			dev_err(data->dev,
				"Failed to disable supply: %d\n", ret);
			return ret;
		}
	}

	return ret;
}

static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
				 struct snd_kcontrol *kctrl, int event)
{
	struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		/* Before widget power up: turn chip on, sync registers */
		return tpa6130a2_power(data, true);
	} else {
		/* After widget power down: turn chip off */
		return tpa6130a2_power(data, false);
	}
}

/*
 * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
 * down in gain.
 */
static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
	0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
	2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
	4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
	6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
	8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
	10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
	12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
	14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
	21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
	38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
);

static const struct snd_kcontrol_new tpa6130a2_controls[] = {
	SOC_SINGLE_TLV("Headphone Playback Volume",
		       TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
		       tpa6130_tlv),
};

static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
	0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
	9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
	17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
);

static const struct snd_kcontrol_new tpa6140a2_controls[] = {
	SOC_SINGLE_TLV("Headphone Playback Volume",
		       TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
		       tpa6140_tlv),
};

static int tpa6130a2_component_probe(struct snd_soc_component *component)
{
	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);

	if (data->id == TPA6140A2)
		return snd_soc_add_component_controls(component,
			tpa6140a2_controls, ARRAY_SIZE(tpa6140a2_controls));
	else
		return snd_soc_add_component_controls(component,
			tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
}

static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("LEFTIN"),
	SND_SOC_DAPM_INPUT("RIGHTIN"),
	SND_SOC_DAPM_OUTPUT("HPLEFT"),
	SND_SOC_DAPM_OUTPUT("HPRIGHT"),

	SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
			 TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
	SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
			 TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
	SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
			 TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
	SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
			 TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),

	SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
			    TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
};

static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
	{ "Left PGA", NULL, "LEFTIN" },
	{ "Right PGA", NULL, "RIGHTIN" },

	{ "Left Mute", NULL, "Left PGA" },
	{ "Right Mute", NULL, "Right PGA" },

	{ "HPLEFT", NULL, "Left Mute" },
	{ "HPRIGHT", NULL, "Right Mute" },

	{ "Left PGA", NULL, "Power" },
	{ "Right PGA", NULL, "Power" },
};

static const struct snd_soc_component_driver tpa6130a2_component_driver = {
	.name = "tpa6130a2",
	.probe = tpa6130a2_component_probe,
	.dapm_widgets = tpa6130a2_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
	.dapm_routes = tpa6130a2_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
};

static const struct reg_default tpa6130a2_reg_defaults[] = {
	{ TPA6130A2_REG_CONTROL, TPA6130A2_SWS },
	{ TPA6130A2_REG_VOL_MUTE, TPA6130A2_MUTE_R | TPA6130A2_MUTE_L },
};

static const struct regmap_config tpa6130a2_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = TPA6130A2_REG_VERSION,
	.reg_defaults = tpa6130a2_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(tpa6130a2_reg_defaults),
	.cache_type = REGCACHE_RBTREE,
};

static int tpa6130a2_probe(struct i2c_client *client,
			   const struct i2c_device_id *id)
{
	struct device *dev;
	struct tpa6130a2_data *data;
	struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
	struct device_node *np = client->dev.of_node;
	const char *regulator;
	unsigned int version;
	int ret;

	dev = &client->dev;

	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->dev = dev;

	data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
	if (IS_ERR(data->regmap))
		return PTR_ERR(data->regmap);

	if (pdata) {
		data->power_gpio = pdata->power_gpio;
	} else if (np) {
		data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
	} else {
		dev_err(dev, "Platform data not set\n");
		dump_stack();
		return -ENODEV;
	}

	i2c_set_clientdata(client, data);

	data->id = id->driver_data;

	if (data->power_gpio >= 0) {
		ret = devm_gpio_request(dev, data->power_gpio,
					"tpa6130a2 enable");
		if (ret < 0) {
			dev_err(dev, "Failed to request power GPIO (%d)\n",
				data->power_gpio);
			return ret;
		}
		gpio_direction_output(data->power_gpio, 0);
	}

	switch (data->id) {
	default:
		dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",
			 data->id);
		/* fall through */
	case TPA6130A2:
		regulator = "Vdd";
		break;
	case TPA6140A2:
		regulator = "AVdd";
		break;
	}

	data->supply = devm_regulator_get(dev, regulator);
	if (IS_ERR(data->supply)) {
		ret = PTR_ERR(data->supply);
		dev_err(dev, "Failed to request supply: %d\n", ret);
		return ret;
	}

	ret = tpa6130a2_power(data, true);
	if (ret != 0)
		return ret;


	/* Read version */
	regmap_read(data->regmap, TPA6130A2_REG_VERSION, &version);
	version &= TPA6130A2_VERSION_MASK;
	if ((version != 1) && (version != 2))
		dev_warn(dev, "UNTESTED version detected (%d)\n", version);

	/* Disable the chip */
	ret = tpa6130a2_power(data, false);
	if (ret != 0)
		return ret;

	return devm_snd_soc_register_component(&client->dev,
			&tpa6130a2_component_driver, NULL, 0);
}

static const struct i2c_device_id tpa6130a2_id[] = {
	{ "tpa6130a2", TPA6130A2 },
	{ "tpa6140a2", TPA6140A2 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);

#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id tpa6130a2_of_match[] = {
	{ .compatible = "ti,tpa6130a2", },
	{ .compatible = "ti,tpa6140a2" },
	{},
};
MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
#endif

static struct i2c_driver tpa6130a2_i2c_driver = {
	.driver = {
		.name = "tpa6130a2",
		.of_match_table = of_match_ptr(tpa6130a2_of_match),
	},
	.probe = tpa6130a2_probe,
	.id_table = tpa6130a2_id,
};

module_i2c_driver(tpa6130a2_i2c_driver);

MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
2b27bdcc	1	// SPDX-License-Identifier: GPL-2.0-only
493b67ef PU	2	/*
	3	* ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
	4	*
	5	* Copyright (C) Nokia Corporation
	6	*
b4079ef4	7	* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
493b67ef PU	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/errno.h>
	12	#include <linux/device.h>
	13	#include <linux/i2c.h>
	14	#include <linux/gpio.h>
7c4e6492	15	#include <linux/regulator/consumer.h>
5a0e3ad6	16	#include <linux/slab.h>
493b67ef PU	17	#include <sound/tpa6130a2-plat.h>
493b67ef PU	18	#include <sound/soc.h>
493b67ef	19	#include <sound/tlv.h>
ee5e4534	20	#include <linux/of.h>
f95a4883	21	#include <linux/of_gpio.h>
a0d5ff44	22	#include <linux/regmap.h>
493b67ef PU	23
	24	#include "tpa6130a2.h"
	25
0722d055 PU	26	enum tpa_model {
	27	TPA6130A2,
	28	TPA6140A2,
	29	};
	30
493b67ef PU	31	/* This struct is used to save the context */
493b67ef PU	32	struct tpa6130a2_data {
6d2de5ab	33	struct device *dev;
a0d5ff44	34	struct regmap *regmap;
ad8332c1	35	struct regulator *supply;
493b67ef	36	int power_gpio;
e5e5b31e	37	enum tpa_model id;
493b67ef PU	38	};
493b67ef PU	39
6d2de5ab	40	static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
493b67ef	41	{
a114580f	42	int ret = 0, ret2;
7c4e6492	43
6d2de5ab	44	if (enable) {
ad8332c1	45	ret = regulator_enable(data->supply);
7c4e6492	46	if (ret != 0) {
6d2de5ab	47	dev_err(data->dev,
ad8332c1	48	"Failed to enable supply: %d\n", ret);
6d2de5ab	49	return ret;
493b67ef	50	}
0656f6cf JN	51	/* Power on */
	52	if (data->power_gpio >= 0)
	53	gpio_set_value(data->power_gpio, 1);
a114580f NY	54
	55	/* Sync registers */
	56	regcache_cache_only(data->regmap, false);
	57	ret = regcache_sync(data->regmap);
	58	if (ret != 0) {
	59	dev_err(data->dev,
	60	"Failed to sync registers: %d\n", ret);
020eab35 NY	61	regcache_cache_only(data->regmap, true);
	62	if (data->power_gpio >= 0)
	63	gpio_set_value(data->power_gpio, 0);
	64	ret2 = regulator_disable(data->supply);
	65	if (ret2 != 0)
	66	dev_err(data->dev,
	67	"Failed to disable supply: %d\n", ret2);
	68	return ret;
a114580f	69	}
d5876ce1	70	} else {
a114580f NY	71	/* Powered off device does not retain registers. While device
	72	* is off, any register updates (i.e. volume changes) should
	73	* happen in cache only.
	74	*/
	75	regcache_mark_dirty(data->regmap);
a114580f NY	76	regcache_cache_only(data->regmap, true);
a114580f NY	77
493b67ef	78	/* Power off */
7c4e6492	79	if (data->power_gpio >= 0)
493b67ef	80	gpio_set_value(data->power_gpio, 0);
7c4e6492	81
020eab35 NY	82	ret = regulator_disable(data->supply);
020eab35 NY	83	if (ret != 0) {
6d2de5ab	84	dev_err(data->dev,
020eab35 NY	85	"Failed to disable supply: %d\n", ret);
020eab35 NY	86	return ret;
493b67ef PU	87	}
493b67ef PU	88	}
7c4e6492	89
7c4e6492	90	return ret;
493b67ef PU	91	}
493b67ef PU	92
6d2de5ab HK	93	static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
	94	struct snd_kcontrol *kctrl, int event)
	95	{
	96	struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
	97	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);
6d2de5ab	98
6d2de5ab	99	if (SND_SOC_DAPM_EVENT_ON(event)) {
a114580f NY	100	/* Before widget power up: turn chip on, sync registers */
a114580f NY	101	return tpa6130a2_power(data, true);
6d2de5ab	102	} else {
a114580f NY	103	/* After widget power down: turn chip off */
a114580f NY	104	return tpa6130a2_power(data, false);
6d2de5ab	105	}
6d2de5ab HK	106	}
6d2de5ab HK	107
493b67ef PU	108	/*
	109	* TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
	110	* down in gain.
	111	*/
4e0e5f80	112	static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
493b67ef PU	113	0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
	114	2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
	115	4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
	116	6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
	117	8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
	118	10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
	119	12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
	120	14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
	121	21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
4e0e5f80 LPC	122	38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
4e0e5f80 LPC	123	);
493b67ef PU	124
493b67ef PU	125	static const struct snd_kcontrol_new tpa6130a2_controls[] = {
e01d700c	126	SOC_SINGLE_TLV("Headphone Playback Volume",
493b67ef	127	TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
493b67ef PU	128	tpa6130_tlv),
	129	};
	130
4e0e5f80	131	static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
e5e5b31e PU	132	0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
e5e5b31e PU	133	9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
4e0e5f80 LPC	134	17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
4e0e5f80 LPC	135	);
e5e5b31e PU	136
e5e5b31e PU	137	static const struct snd_kcontrol_new tpa6140a2_controls[] = {
e01d700c	138	SOC_SINGLE_TLV("Headphone Playback Volume",
826e962c	139	TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
826e962c	140	tpa6140_tlv),
e5e5b31e PU	141	};
e5e5b31e PU	142
cb7e6225	143	static int tpa6130a2_component_probe(struct snd_soc_component *component)
493b67ef	144	{
cb7e6225	145	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);
e5e5b31e	146
e5e5b31e	147	if (data->id == TPA6140A2)
cb7e6225 HK	148	return snd_soc_add_component_controls(component,
cb7e6225 HK	149	tpa6140a2_controls, ARRAY_SIZE(tpa6140a2_controls));
e5e5b31e	150	else
cb7e6225 HK	151	return snd_soc_add_component_controls(component,
cb7e6225 HK	152	tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
493b67ef	153	}
cb7e6225	154
6d2de5ab HK	155	static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
	156	SND_SOC_DAPM_INPUT("LEFTIN"),
	157	SND_SOC_DAPM_INPUT("RIGHTIN"),
	158	SND_SOC_DAPM_OUTPUT("HPLEFT"),
	159	SND_SOC_DAPM_OUTPUT("HPRIGHT"),
	160
	161	SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
	162	TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
	163	SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
	164	TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
	165	SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
	166	TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
	167	SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
	168	TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),
	169
	170	SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
	171	TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
	172	SND_SOC_DAPM_PRE_PMU \| SND_SOC_DAPM_POST_PMD),
	173	};
	174
	175	static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
	176	{ "Left PGA", NULL, "LEFTIN" },
	177	{ "Right PGA", NULL, "RIGHTIN" },
	178
	179	{ "Left Mute", NULL, "Left PGA" },
	180	{ "Right Mute", NULL, "Right PGA" },
	181
	182	{ "HPLEFT", NULL, "Left Mute" },
	183	{ "HPRIGHT", NULL, "Right Mute" },
	184
	185	{ "Left PGA", NULL, "Power" },
	186	{ "Right PGA", NULL, "Power" },
	187	};
	188
3cadd224	189	static const struct snd_soc_component_driver tpa6130a2_component_driver = {
cb7e6225 HK	190	.name = "tpa6130a2",
cb7e6225 HK	191	.probe = tpa6130a2_component_probe,
6d2de5ab HK	192	.dapm_widgets = tpa6130a2_dapm_widgets,
	193	.num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
	194	.dapm_routes = tpa6130a2_dapm_routes,
	195	.num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
cb7e6225	196	};
493b67ef	197
a0d5ff44 HK	198	static const struct reg_default tpa6130a2_reg_defaults[] = {
	199	{ TPA6130A2_REG_CONTROL, TPA6130A2_SWS },
	200	{ TPA6130A2_REG_VOL_MUTE, TPA6130A2_MUTE_R \| TPA6130A2_MUTE_L },
	201	};
	202
	203	static const struct regmap_config tpa6130a2_regmap_config = {
	204	.reg_bits = 8,
	205	.val_bits = 8,
	206	.max_register = TPA6130A2_REG_VERSION,
	207	.reg_defaults = tpa6130a2_reg_defaults,
	208	.num_reg_defaults = ARRAY_SIZE(tpa6130a2_reg_defaults),
	209	.cache_type = REGCACHE_RBTREE,
	210	};
	211
7a79e94e BP	212	static int tpa6130a2_probe(struct i2c_client *client,
7a79e94e BP	213	const struct i2c_device_id *id)
493b67ef PU	214	{
	215	struct device *dev;
	216	struct tpa6130a2_data *data;
f95a4883 SR	217	struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
f95a4883 SR	218	struct device_node *np = client->dev.of_node;
ad8332c1	219	const char *regulator;
a0d5ff44	220	unsigned int version;
ad8332c1	221	int ret;
493b67ef PU	222
	223	dev = &client->dev;
	224
6945e9f9	225	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
656e3435	226	if (!data)
493b67ef	227	return -ENOMEM;
493b67ef	228
6d2de5ab HK	229	data->dev = dev;
6d2de5ab HK	230
a0d5ff44 HK	231	data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
	232	if (IS_ERR(data->regmap))
	233	return PTR_ERR(data->regmap);
	234
f95a4883 SR	235	if (pdata) {
	236	data->power_gpio = pdata->power_gpio;
	237	} else if (np) {
	238	data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
	239	} else {
	240	dev_err(dev, "Platform data not set\n");
	241	dump_stack();
	242	return -ENODEV;
	243	}
	244
6d2de5ab	245	i2c_set_clientdata(client, data);
493b67ef	246
07441006	247	data->id = id->driver_data;
493b67ef	248
493b67ef	249	if (data->power_gpio >= 0) {
d06080cf SK	250	ret = devm_gpio_request(dev, data->power_gpio,
d06080cf SK	251	"tpa6130a2 enable");
493b67ef PU	252	if (ret < 0) {
	253	dev_err(dev, "Failed to request power GPIO (%d)\n",
	254	data->power_gpio);
39088c25	255	return ret;
493b67ef PU	256	}
493b67ef PU	257	gpio_direction_output(data->power_gpio, 0);
493b67ef PU	258	}
493b67ef PU	259
e5e5b31e	260	switch (data->id) {
ad8332c1 JN	261	default:
ad8332c1 JN	262	dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",
07441006	263	data->id);
402954f8	264	/* fall through */
2138301e	265	case TPA6130A2:
ad8332c1	266	regulator = "Vdd";
2138301e IK	267	break;
2138301e IK	268	case TPA6140A2:
ad8332c1	269	regulator = "AVdd";
2138301e	270	break;
2138301e	271	}
7c4e6492	272
d06080cf	273	data->supply = devm_regulator_get(dev, regulator);
ad8332c1 JN	274	if (IS_ERR(data->supply)) {
	275	ret = PTR_ERR(data->supply);
	276	dev_err(dev, "Failed to request supply: %d\n", ret);
39088c25	277	return ret;
7c4e6492 IK	278	}
7c4e6492 IK	279
6d2de5ab	280	ret = tpa6130a2_power(data, true);
7c4e6492	281	if (ret != 0)
39088c25	282	return ret;
7c4e6492	283
493b67ef PU	284
493b67ef PU	285	/* Read version */
a0d5ff44 HK	286	regmap_read(data->regmap, TPA6130A2_REG_VERSION, &version);
	287	version &= TPA6130A2_VERSION_MASK;
	288	if ((version != 1) && (version != 2))
	289	dev_warn(dev, "UNTESTED version detected (%d)\n", version);
493b67ef PU	290
493b67ef PU	291	/* Disable the chip */
6d2de5ab	292	ret = tpa6130a2_power(data, false);
7c4e6492	293	if (ret != 0)
39088c25	294	return ret;
493b67ef	295
cb7e6225 HK	296	return devm_snd_soc_register_component(&client->dev,
cb7e6225 HK	297	&tpa6130a2_component_driver, NULL, 0);
493b67ef PU	298	}
493b67ef PU	299
493b67ef	300	static const struct i2c_device_id tpa6130a2_id[] = {
07441006 PU	301	{ "tpa6130a2", TPA6130A2 },
07441006 PU	302	{ "tpa6140a2", TPA6140A2 },
493b67ef PU	303	{ }
	304	};
	305	MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
	306
f95a4883 SR	307	#if IS_ENABLED(CONFIG_OF)
	308	static const struct of_device_id tpa6130a2_of_match[] = {
	309	{ .compatible = "ti,tpa6130a2", },
	310	{ .compatible = "ti,tpa6140a2" },
	311	{},
	312	};
	313	MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
	314	#endif
	315
493b67ef PU	316	static struct i2c_driver tpa6130a2_i2c_driver = {
	317	.driver = {
	318	.name = "tpa6130a2",
f95a4883	319	.of_match_table = of_match_ptr(tpa6130a2_of_match),
493b67ef PU	320	},
493b67ef PU	321	.probe = tpa6130a2_probe,
493b67ef PU	322	.id_table = tpa6130a2_id,
	323	};
	324
f062e2b6	325	module_i2c_driver(tpa6130a2_i2c_driver);
493b67ef	326
b4079ef4	327	MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
493b67ef PU	328	MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
493b67ef PU	329	MODULE_LICENSE("GPL");