[deliverable/linux.git] / sound / soc / codecs / tpa6130a2.c

/*
 * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
 *
 * Copyright (C) Nokia Corporation
 *
 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

#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;

	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);
	} else {
		/* 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;
		}

		/* device regs does not match the cache state anymore */
		regcache_mark_dirty(data->regmap);
	}

	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);
	int ret;

	/* before widget power up */
	if (SND_SOC_DAPM_EVENT_ON(event)) {
		/* Turn on the chip */
		tpa6130a2_power(data, true);
		/* Sync the registers */
		ret = regcache_sync(data->regmap);
		if (ret < 0) {
			dev_err(c->dev, "Failed to initialize chip\n");
			tpa6130a2_power(data, false);
			return ret;
		}
	/* after widget power down */
	} else {
		tpa6130a2_power(data, false);
	}

	return 0;
}

/*
 * 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" },
};

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);
	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
493b67ef PU	1	/*
	2	* ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
	3	*
	4	* Copyright (C) Nokia Corporation
	5	*
b4079ef4	6	* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
493b67ef PU	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*/
	22
	23	#include <linux/module.h>
	24	#include <linux/errno.h>
	25	#include <linux/device.h>
	26	#include <linux/i2c.h>
	27	#include <linux/gpio.h>
7c4e6492	28	#include <linux/regulator/consumer.h>
5a0e3ad6	29	#include <linux/slab.h>
493b67ef PU	30	#include <sound/tpa6130a2-plat.h>
493b67ef PU	31	#include <sound/soc.h>
493b67ef	32	#include <sound/tlv.h>
ee5e4534	33	#include <linux/of.h>
f95a4883	34	#include <linux/of_gpio.h>
a0d5ff44	35	#include <linux/regmap.h>
493b67ef PU	36
	37	#include "tpa6130a2.h"
	38
0722d055 PU	39	enum tpa_model {
	40	TPA6130A2,
	41	TPA6140A2,
	42	};
	43
493b67ef PU	44	/* This struct is used to save the context */
493b67ef PU	45	struct tpa6130a2_data {
6d2de5ab	46	struct device *dev;
a0d5ff44	47	struct regmap *regmap;
ad8332c1	48	struct regulator *supply;
493b67ef	49	int power_gpio;
e5e5b31e	50	enum tpa_model id;
493b67ef PU	51	};
493b67ef PU	52
6d2de5ab	53	static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
493b67ef	54	{
6d2de5ab	55	int ret;
7c4e6492	56
6d2de5ab	57	if (enable) {
ad8332c1	58	ret = regulator_enable(data->supply);
7c4e6492	59	if (ret != 0) {
6d2de5ab	60	dev_err(data->dev,
ad8332c1	61	"Failed to enable supply: %d\n", ret);
6d2de5ab	62	return ret;
493b67ef	63	}
0656f6cf JN	64	/* Power on */
	65	if (data->power_gpio >= 0)
	66	gpio_set_value(data->power_gpio, 1);
d5876ce1	67	} else {
493b67ef	68	/* Power off */
7c4e6492	69	if (data->power_gpio >= 0)
493b67ef	70	gpio_set_value(data->power_gpio, 0);
7c4e6492	71
ad8332c1	72	ret = regulator_disable(data->supply);
7c4e6492	73	if (ret != 0) {
6d2de5ab	74	dev_err(data->dev,
ad8332c1	75	"Failed to disable supply: %d\n", ret);
6d2de5ab	76	return ret;
493b67ef	77	}
7c4e6492	78
a0d5ff44 HK	79	/* device regs does not match the cache state anymore */
a0d5ff44 HK	80	regcache_mark_dirty(data->regmap);
493b67ef	81	}
7c4e6492	82
7c4e6492	83	return ret;
493b67ef PU	84	}
493b67ef PU	85
6d2de5ab HK	86	static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
	87	struct snd_kcontrol *kctrl, int event)
	88	{
	89	struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
	90	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);
	91	int ret;
	92
	93	/* before widget power up */
	94	if (SND_SOC_DAPM_EVENT_ON(event)) {
	95	/* Turn on the chip */
	96	tpa6130a2_power(data, true);
	97	/* Sync the registers */
	98	ret = regcache_sync(data->regmap);
	99	if (ret < 0) {
	100	dev_err(c->dev, "Failed to initialize chip\n");
	101	tpa6130a2_power(data, false);
	102	return ret;
	103	}
	104	/* after widget power down */
	105	} else {
	106	tpa6130a2_power(data, false);
	107	}
	108
	109	return 0;
	110	}
	111
493b67ef PU	112	/*
	113	* TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
	114	* down in gain.
	115	*/
4e0e5f80	116	static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
493b67ef PU	117	0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
	118	2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
	119	4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
	120	6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
	121	8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
	122	10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
	123	12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
	124	14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
	125	21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
4e0e5f80 LPC	126	38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
4e0e5f80 LPC	127	);
493b67ef PU	128
493b67ef PU	129	static const struct snd_kcontrol_new tpa6130a2_controls[] = {
e01d700c	130	SOC_SINGLE_TLV("Headphone Playback Volume",
493b67ef	131	TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
493b67ef PU	132	tpa6130_tlv),
	133	};
	134
4e0e5f80	135	static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
e5e5b31e PU	136	0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
e5e5b31e PU	137	9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
4e0e5f80 LPC	138	17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
4e0e5f80 LPC	139	);
e5e5b31e PU	140
e5e5b31e PU	141	static const struct snd_kcontrol_new tpa6140a2_controls[] = {
e01d700c	142	SOC_SINGLE_TLV("Headphone Playback Volume",
826e962c	143	TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
826e962c	144	tpa6140_tlv),
e5e5b31e PU	145	};
e5e5b31e PU	146
cb7e6225	147	static int tpa6130a2_component_probe(struct snd_soc_component *component)
493b67ef	148	{
cb7e6225	149	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);
e5e5b31e	150
e5e5b31e	151	if (data->id == TPA6140A2)
cb7e6225 HK	152	return snd_soc_add_component_controls(component,
cb7e6225 HK	153	tpa6140a2_controls, ARRAY_SIZE(tpa6140a2_controls));
e5e5b31e	154	else
cb7e6225 HK	155	return snd_soc_add_component_controls(component,
cb7e6225 HK	156	tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
493b67ef	157	}
cb7e6225	158
6d2de5ab HK	159	static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
	160	SND_SOC_DAPM_INPUT("LEFTIN"),
	161	SND_SOC_DAPM_INPUT("RIGHTIN"),
	162	SND_SOC_DAPM_OUTPUT("HPLEFT"),
	163	SND_SOC_DAPM_OUTPUT("HPRIGHT"),
	164
	165	SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
	166	TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
	167	SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
	168	TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
	169	SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
	170	TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
	171	SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
	172	TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),
	173
	174	SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
	175	TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
	176	SND_SOC_DAPM_PRE_PMU \| SND_SOC_DAPM_POST_PMD),
	177	};
	178
	179	static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
	180	{ "Left PGA", NULL, "LEFTIN" },
	181	{ "Right PGA", NULL, "RIGHTIN" },
	182
	183	{ "Left Mute", NULL, "Left PGA" },
	184	{ "Right Mute", NULL, "Right PGA" },
	185
	186	{ "HPLEFT", NULL, "Left Mute" },
	187	{ "HPRIGHT", NULL, "Right Mute" },
	188
	189	{ "Left PGA", NULL, "Power" },
	190	{ "Right PGA", NULL, "Power" },
	191	};
	192
cb7e6225 HK	193	struct snd_soc_component_driver tpa6130a2_component_driver = {
	194	.name = "tpa6130a2",
	195	.probe = tpa6130a2_component_probe,
6d2de5ab HK	196	.dapm_widgets = tpa6130a2_dapm_widgets,
	197	.num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
	198	.dapm_routes = tpa6130a2_dapm_routes,
	199	.num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
cb7e6225	200	};
493b67ef	201
a0d5ff44 HK	202	static const struct reg_default tpa6130a2_reg_defaults[] = {
	203	{ TPA6130A2_REG_CONTROL, TPA6130A2_SWS },
	204	{ TPA6130A2_REG_VOL_MUTE, TPA6130A2_MUTE_R \| TPA6130A2_MUTE_L },
	205	};
	206
	207	static const struct regmap_config tpa6130a2_regmap_config = {
	208	.reg_bits = 8,
	209	.val_bits = 8,
	210	.max_register = TPA6130A2_REG_VERSION,
	211	.reg_defaults = tpa6130a2_reg_defaults,
	212	.num_reg_defaults = ARRAY_SIZE(tpa6130a2_reg_defaults),
	213	.cache_type = REGCACHE_RBTREE,
	214	};
	215
7a79e94e BP	216	static int tpa6130a2_probe(struct i2c_client *client,
7a79e94e BP	217	const struct i2c_device_id *id)
493b67ef PU	218	{
	219	struct device *dev;
	220	struct tpa6130a2_data *data;
f95a4883 SR	221	struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
f95a4883 SR	222	struct device_node *np = client->dev.of_node;
ad8332c1	223	const char *regulator;
a0d5ff44	224	unsigned int version;
ad8332c1	225	int ret;
493b67ef PU	226
	227	dev = &client->dev;
	228
6945e9f9	229	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
656e3435	230	if (!data)
493b67ef	231	return -ENOMEM;
493b67ef	232
6d2de5ab HK	233	data->dev = dev;
6d2de5ab HK	234
a0d5ff44 HK	235	data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
	236	if (IS_ERR(data->regmap))
	237	return PTR_ERR(data->regmap);
	238
f95a4883 SR	239	if (pdata) {
	240	data->power_gpio = pdata->power_gpio;
	241	} else if (np) {
	242	data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
	243	} else {
	244	dev_err(dev, "Platform data not set\n");
	245	dump_stack();
	246	return -ENODEV;
	247	}
	248
6d2de5ab	249	i2c_set_clientdata(client, data);
493b67ef	250
07441006	251	data->id = id->driver_data;
493b67ef	252
493b67ef	253	if (data->power_gpio >= 0) {
d06080cf SK	254	ret = devm_gpio_request(dev, data->power_gpio,
d06080cf SK	255	"tpa6130a2 enable");
493b67ef PU	256	if (ret < 0) {
	257	dev_err(dev, "Failed to request power GPIO (%d)\n",
	258	data->power_gpio);
39088c25	259	return ret;
493b67ef PU	260	}
493b67ef PU	261	gpio_direction_output(data->power_gpio, 0);
493b67ef PU	262	}
493b67ef PU	263
e5e5b31e	264	switch (data->id) {
ad8332c1 JN	265	default:
ad8332c1 JN	266	dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",
07441006	267	data->id);
2138301e	268	case TPA6130A2:
ad8332c1	269	regulator = "Vdd";
2138301e IK	270	break;
2138301e IK	271	case TPA6140A2:
ad8332c1	272	regulator = "AVdd";
2138301e	273	break;
2138301e	274	}
7c4e6492	275
d06080cf	276	data->supply = devm_regulator_get(dev, regulator);
ad8332c1 JN	277	if (IS_ERR(data->supply)) {
	278	ret = PTR_ERR(data->supply);
	279	dev_err(dev, "Failed to request supply: %d\n", ret);
39088c25	280	return ret;
7c4e6492 IK	281	}
7c4e6492 IK	282
6d2de5ab	283	ret = tpa6130a2_power(data, true);
7c4e6492	284	if (ret != 0)
39088c25	285	return ret;
7c4e6492	286
493b67ef PU	287
493b67ef PU	288	/* Read version */
a0d5ff44 HK	289	regmap_read(data->regmap, TPA6130A2_REG_VERSION, &version);
	290	version &= TPA6130A2_VERSION_MASK;
	291	if ((version != 1) && (version != 2))
	292	dev_warn(dev, "UNTESTED version detected (%d)\n", version);
493b67ef PU	293
493b67ef PU	294	/* Disable the chip */
6d2de5ab	295	ret = tpa6130a2_power(data, false);
7c4e6492	296	if (ret != 0)
39088c25	297	return ret;
493b67ef	298
cb7e6225 HK	299	return devm_snd_soc_register_component(&client->dev,
cb7e6225 HK	300	&tpa6130a2_component_driver, NULL, 0);
493b67ef PU	301	}
493b67ef PU	302
493b67ef	303	static const struct i2c_device_id tpa6130a2_id[] = {
07441006 PU	304	{ "tpa6130a2", TPA6130A2 },
07441006 PU	305	{ "tpa6140a2", TPA6140A2 },
493b67ef PU	306	{ }
	307	};
	308	MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
	309
f95a4883 SR	310	#if IS_ENABLED(CONFIG_OF)
	311	static const struct of_device_id tpa6130a2_of_match[] = {
	312	{ .compatible = "ti,tpa6130a2", },
	313	{ .compatible = "ti,tpa6140a2" },
	314	{},
	315	};
	316	MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
	317	#endif
	318
493b67ef PU	319	static struct i2c_driver tpa6130a2_i2c_driver = {
	320	.driver = {
	321	.name = "tpa6130a2",
f95a4883	322	.of_match_table = of_match_ptr(tpa6130a2_of_match),
493b67ef PU	323	},
493b67ef PU	324	.probe = tpa6130a2_probe,
493b67ef PU	325	.id_table = tpa6130a2_id,
	326	};
	327
f062e2b6	328	module_i2c_driver(tpa6130a2_i2c_driver);
493b67ef	329
b4079ef4	330	MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
493b67ef PU	331	MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
493b67ef PU	332	MODULE_LICENSE("GPL");