[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/of_device.h>
#include <linux/regmap.h>

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

#include "madera.h"

static int madera_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct madera *madera;
	const struct regmap_config *regmap_16bit_config = NULL;
	const struct regmap_config *regmap_32bit_config = NULL;
	const void *of_data;
	unsigned long type;
	const char *name;
	int ret;

	of_data = of_device_get_match_data(&i2c->dev);
	if (of_data)
		type = (unsigned long)of_data;
	else
		type = id->driver_data;

	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>
	13	#include <linux/of_device.h>
	14	#include <linux/regmap.h>
	15
	16	#include <linux/mfd/madera/core.h>
	17
	18	#include "madera.h"
	19
	20	static int madera_i2c_probe(struct i2c_client *i2c,
	21	const struct i2c_device_id *id)
	22	{
	23	struct madera *madera;
	24	const struct regmap_config *regmap_16bit_config = NULL;
	25	const struct regmap_config *regmap_32bit_config = NULL;
	26	const void *of_data;
	27	unsigned long type;
	28	const char *name;
	29	int ret;
	30
	31	of_data = of_device_get_match_data(&i2c->dev);
	32	if (of_data)
	33	type = (unsigned long)of_data;
	34	else
	35	type = id->driver_data;
	36
	37	switch (type) {
1ef921b6 RF	38	case CS47L15:
	39	if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
	40	regmap_16bit_config = &cs47l15_16bit_i2c_regmap;
	41	regmap_32bit_config = &cs47l15_32bit_i2c_regmap;
	42	}
	43	break;
16b27467 RF	44	case CS47L35:
	45	if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
	46	regmap_16bit_config = &cs47l35_16bit_i2c_regmap;
	47	regmap_32bit_config = &cs47l35_32bit_i2c_regmap;
	48	}
	49	break;
	50	case CS47L85:
	51	case WM1840:
	52	if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
	53	regmap_16bit_config = &cs47l85_16bit_i2c_regmap;
	54	regmap_32bit_config = &cs47l85_32bit_i2c_regmap;
	55	}
	56	break;
	57	case CS47L90:
	58	case CS47L91:
	59	if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
	60	regmap_16bit_config = &cs47l90_16bit_i2c_regmap;
	61	regmap_32bit_config = &cs47l90_32bit_i2c_regmap;
	62	}
	63	break;
29793990 RF	64	case CS42L92:
	65	case CS47L92:
	66	case CS47L93:
	67	if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
	68	regmap_16bit_config = &cs47l92_16bit_i2c_regmap;
	69	regmap_32bit_config = &cs47l92_32bit_i2c_regmap;
	70	}
	71	break;
16b27467 RF	72	default:
	73	dev_err(&i2c->dev,
	74	"Unknown Madera I2C device type %ld\n", type);
	75	return -EINVAL;
	76	}
	77
	78	name = madera_name_from_type(type);
	79
	80	if (!regmap_16bit_config) {
	81	/* it's polite to say which codec isn't built into the kernel */
	82	dev_err(&i2c->dev,
	83	"Kernel does not include support for %s\n", name);
	84	return -EINVAL;
	85	}
	86
	87	madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL);
	88	if (!madera)
	89	return -ENOMEM;
	90
16b27467 RF	91	madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config);
	92	if (IS_ERR(madera->regmap)) {
	93	ret = PTR_ERR(madera->regmap);
	94	dev_err(&i2c->dev,
	95	"Failed to allocate 16-bit register map: %d\n", ret);
	96	return ret;
	97	}
	98
	99	madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config);
	100	if (IS_ERR(madera->regmap_32bit)) {
	101	ret = PTR_ERR(madera->regmap_32bit);
	102	dev_err(&i2c->dev,
	103	"Failed to allocate 32-bit register map: %d\n", ret);
	104	return ret;
	105	}
	106
	107	madera->type = type;
	108	madera->type_name = name;
	109	madera->dev = &i2c->dev;
	110	madera->irq = i2c->irq;
	111
	112	return madera_dev_init(madera);
	113	}
	114
ed5c2f5f	115	static void madera_i2c_remove(struct i2c_client *i2c)
16b27467 RF	116	{
	117	struct madera *madera = dev_get_drvdata(&i2c->dev);
	118
	119	madera_dev_exit(madera);
16b27467 RF	120	}
	121
	122	static const struct i2c_device_id madera_i2c_id[] = {
1ef921b6	123	{ "cs47l15", CS47L15 },
16b27467 RF	124	{ "cs47l35", CS47L35 },
	125	{ "cs47l85", CS47L85 },
	126	{ "cs47l90", CS47L90 },
	127	{ "cs47l91", CS47L91 },
29793990 RF	128	{ "cs42l92", CS42L92 },
	129	{ "cs47l92", CS47L92 },
	130	{ "cs47l93", CS47L93 },
16b27467 RF	131	{ "wm1840", WM1840 },
	132	{ }
	133	};
	134	MODULE_DEVICE_TABLE(i2c, madera_i2c_id);
	135
	136	static struct i2c_driver madera_i2c_driver = {
	137	.driver = {
	138	.name = "madera",
	139	.pm = &madera_pm_ops,
	140	.of_match_table = of_match_ptr(madera_of_match),
	141	},
	142	.probe = madera_i2c_probe,
	143	.remove = madera_i2c_remove,
	144	.id_table = madera_i2c_id,
	145	};
	146
	147	module_i2c_driver(madera_i2c_driver);
	148
	149	MODULE_DESCRIPTION("Madera I2C bus interface");
	150	MODULE_AUTHOR("Richard Fitzgerald <[email protected]>");
	151	MODULE_LICENSE("GPL v2");