[linux.git] / drivers / mfd / madera-i2c.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * I2C bus interface to Cirrus Logic Madera codecs
 *
 * Copyright (C) 2015-2018 Cirrus Logic
 */

#include <linux/device.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regmap.h>

#include <linux/mfd/madera/core.h>

#include "madera.h"

static int madera_i2c_probe(struct i2c_client *i2c)
{
	struct madera *madera;
	const struct regmap_config *regmap_16bit_config = NULL;
	const struct regmap_config *regmap_32bit_config = NULL;
	unsigned long type;
	const char *name;
	int ret;

	type = (uintptr_t)i2c_get_match_data(i2c);
	switch (type) {
	case CS47L15:
		if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
			regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
			regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
		}
		break;
	case CS47L35:
		if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
			regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
			regmap_32bit_config = &cs47l35_32bit_i2c_regmap;
		}
		break;
	case CS47L85:
	case WM1840:
		if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
			regmap_16bit_config = &cs47l85_16bit_i2c_regmap;
			regmap_32bit_config = &cs47l85_32bit_i2c_regmap;
		}
		break;
	case CS47L90:
	case CS47L91:
		if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
			regmap_16bit_config = &cs47l90_16bit_i2c_regmap;
			regmap_32bit_config = &cs47l90_32bit_i2c_regmap;
		}
		break;
	case CS42L92:
	case CS47L92:
	case CS47L93:
		if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
			regmap_16bit_config = &cs47l92_16bit_i2c_regmap;
			regmap_32bit_config = &cs47l92_32bit_i2c_regmap;
		}
		break;
	default:
		dev_err(&i2c->dev,
			"Unknown Madera I2C device type %ld\n", type);
		return -EINVAL;
	}

	name = madera_name_from_type(type);

	if (!regmap_16bit_config) {
		/* it's polite to say which codec isn't built into the kernel */
		dev_err(&i2c->dev,
			"Kernel does not include support for %s\n", name);
		return -EINVAL;
	}

	madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL);
	if (!madera)
		return -ENOMEM;

	madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config);
	if (IS_ERR(madera->regmap)) {
		ret = PTR_ERR(madera->regmap);
		dev_err(&i2c->dev,
			"Failed to allocate 16-bit register map: %d\n",	ret);
		return ret;
	}

	madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config);
	if (IS_ERR(madera->regmap_32bit)) {
		ret = PTR_ERR(madera->regmap_32bit);
		dev_err(&i2c->dev,
			"Failed to allocate 32-bit register map: %d\n", ret);
		return ret;
	}

	madera->type = type;
	madera->type_name = name;
	madera->dev = &i2c->dev;
	madera->irq = i2c->irq;

	return madera_dev_init(madera);
}

static void madera_i2c_remove(struct i2c_client *i2c)
{
	struct madera *madera = dev_get_drvdata(&i2c->dev);

	madera_dev_exit(madera);
}

static const struct i2c_device_id madera_i2c_id[] = {
	{ "cs47l15", CS47L15 },
	{ "cs47l35", CS47L35 },
	{ "cs47l85", CS47L85 },
	{ "cs47l90", CS47L90 },
	{ "cs47l91", CS47L91 },
	{ "cs42l92", CS42L92 },
	{ "cs47l92", CS47L92 },
	{ "cs47l93", CS47L93 },
	{ "wm1840", WM1840 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, madera_i2c_id);

static struct i2c_driver madera_i2c_driver = {
	.driver = {
		.name	= "madera",
		.pm	= &madera_pm_ops,
		.of_match_table	= of_match_ptr(madera_of_match),
	},
	.probe		= madera_i2c_probe,
	.remove		= madera_i2c_remove,
	.id_table	= madera_i2c_id,
};

module_i2c_driver(madera_i2c_driver);

MODULE_DESCRIPTION("Madera I2C bus interface");
MODULE_AUTHOR("Richard Fitzgerald <[email protected]>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d6871a73	1	// SPDX-License-Identifier: GPL-2.0-only
16b27467 RF	2	/*
	3	* I2C bus interface to Cirrus Logic Madera codecs
	4	*
	5	* Copyright (C) 2015-2018 Cirrus Logic
16b27467 RF	6	*/
	7
	8	#include <linux/device.h>
	9	#include <linux/err.h>
	10	#include <linux/i2c.h>
	11	#include <linux/module.h>
	12	#include <linux/of.h>
16b27467 RF	13	#include <linux/regmap.h>
	14
	15	#include <linux/mfd/madera/core.h>
	16
	17	#include "madera.h"
	18
806b9167	19	static int madera_i2c_probe(struct i2c_client *i2c)
16b27467 RF	20	{
	21	struct madera *madera;
	22	const struct regmap_config *regmap_16bit_config = NULL;
	23	const struct regmap_config *regmap_32bit_config = NULL;
16b27467 RF	24	unsigned long type;
	25	const char *name;
	26	int ret;
	27
f1f23a1a	28	type = (uintptr_t)i2c_get_match_data(i2c);
16b27467	29	switch (type) {
1ef921b6 RF	30	case CS47L15:
	31	if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
	32	regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
	33	regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
	34	}
	35	break;
16b27467 RF	36	case CS47L35:
	37	if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
	38	regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
	39	regmap_32bit_config = &cs47l35_32bit_i2c_regmap;
	40	}
	41	break;
	42	case CS47L85:
	43	case WM1840:
	44	if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
	45	regmap_16bit_config = &cs47l85_16bit_i2c_regmap;
	46	regmap_32bit_config = &cs47l85_32bit_i2c_regmap;
	47	}
	48	break;
	49	case CS47L90:
	50	case CS47L91:
	51	if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
	52	regmap_16bit_config = &cs47l90_16bit_i2c_regmap;
	53	regmap_32bit_config = &cs47l90_32bit_i2c_regmap;
	54	}
	55	break;
29793990 RF	56	case CS42L92:
	57	case CS47L92:
	58	case CS47L93:
	59	if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
	60	regmap_16bit_config = &cs47l92_16bit_i2c_regmap;
	61	regmap_32bit_config = &cs47l92_32bit_i2c_regmap;
	62	}
	63	break;
16b27467 RF	64	default:
	65	dev_err(&i2c->dev,
	66	"Unknown Madera I2C device type %ld\n", type);
	67	return -EINVAL;
	68	}
	69
	70	name = madera_name_from_type(type);
	71
	72	if (!regmap_16bit_config) {
	73	/* it's polite to say which codec isn't built into the kernel */
	74	dev_err(&i2c->dev,
	75	"Kernel does not include support for %s\n", name);
	76	return -EINVAL;
	77	}
	78
	79	madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL);
	80	if (!madera)
	81	return -ENOMEM;
	82
16b27467 RF	83	madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config);
	84	if (IS_ERR(madera->regmap)) {
	85	ret = PTR_ERR(madera->regmap);
	86	dev_err(&i2c->dev,
	87	"Failed to allocate 16-bit register map: %d\n", ret);
	88	return ret;
	89	}
	90
	91	madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config);
	92	if (IS_ERR(madera->regmap_32bit)) {
	93	ret = PTR_ERR(madera->regmap_32bit);
	94	dev_err(&i2c->dev,
	95	"Failed to allocate 32-bit register map: %d\n", ret);
	96	return ret;
	97	}
	98
	99	madera->type = type;
	100	madera->type_name = name;
	101	madera->dev = &i2c->dev;
	102	madera->irq = i2c->irq;
	103
	104	return madera_dev_init(madera);
	105	}
	106
ed5c2f5f	107	static void madera_i2c_remove(struct i2c_client *i2c)
16b27467 RF	108	{
	109	struct madera *madera = dev_get_drvdata(&i2c->dev);
	110
	111	madera_dev_exit(madera);
16b27467 RF	112	}
	113
	114	static const struct i2c_device_id madera_i2c_id[] = {
1ef921b6	115	{ "cs47l15", CS47L15 },
16b27467 RF	116	{ "cs47l35", CS47L35 },
	117	{ "cs47l85", CS47L85 },
	118	{ "cs47l90", CS47L90 },
	119	{ "cs47l91", CS47L91 },
29793990 RF	120	{ "cs42l92", CS42L92 },
	121	{ "cs47l92", CS47L92 },
	122	{ "cs47l93", CS47L93 },
16b27467 RF	123	{ "wm1840", WM1840 },
	124	{ }
	125	};
	126	MODULE_DEVICE_TABLE(i2c, madera_i2c_id);
	127
	128	static struct i2c_driver madera_i2c_driver = {
	129	.driver = {
	130	.name = "madera",
	131	.pm = &madera_pm_ops,
	132	.of_match_table = of_match_ptr(madera_of_match),
	133	},
9816d859	134	.probe = madera_i2c_probe,
16b27467 RF	135	.remove = madera_i2c_remove,
	136	.id_table = madera_i2c_id,
	137	};
	138
	139	module_i2c_driver(madera_i2c_driver);
	140
	141	MODULE_DESCRIPTION("Madera I2C bus interface");
	142	MODULE_AUTHOR("Richard Fitzgerald <[email protected]>");
	143	MODULE_LICENSE("GPL v2");