[linux-block.git] / drivers / mfd / da9052-spi.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * SPI access for Dialog DA9052 PMICs.
 *
 * Copyright(c) 2011 Dialog Semiconductor Ltd.
 *
 * Author: David Dajun Chen <dchen@diasemi.com>
 */

#include <linux/device.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/mfd/core.h>
#include <linux/spi/spi.h>
#include <linux/err.h>

#include <linux/mfd/da9052/da9052.h>

static int da9052_spi_probe(struct spi_device *spi)
{
	struct regmap_config config;
	int ret;
	const struct spi_device_id *id = spi_get_device_id(spi);
	struct da9052 *da9052;

	da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
	if (!da9052)
		return -ENOMEM;

	spi->mode = SPI_MODE_0;
	spi->bits_per_word = 8;
	spi_setup(spi);

	da9052->dev = &spi->dev;
	da9052->chip_irq = spi->irq;

	spi_set_drvdata(spi, da9052);

	config = da9052_regmap_config;
	config.read_flag_mask = 1;
	config.reg_bits = 7;
	config.pad_bits = 1;
	config.val_bits = 8;
	config.use_single_read = true;
	config.use_single_write = true;

	da9052->regmap = devm_regmap_init_spi(spi, &config);
	if (IS_ERR(da9052->regmap)) {
		ret = PTR_ERR(da9052->regmap);
		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	return da9052_device_init(da9052, id->driver_data);
}

static int da9052_spi_remove(struct spi_device *spi)
{
	struct da9052 *da9052 = spi_get_drvdata(spi);

	da9052_device_exit(da9052);
	return 0;
}

static const struct spi_device_id da9052_spi_id[] = {
	{"da9052", DA9052},
	{"da9053-aa", DA9053_AA},
	{"da9053-ba", DA9053_BA},
	{"da9053-bb", DA9053_BB},
	{"da9053-bc", DA9053_BC},
	{}
};

static struct spi_driver da9052_spi_driver = {
	.probe = da9052_spi_probe,
	.remove = da9052_spi_remove,
	.id_table = da9052_spi_id,
	.driver = {
		.name = "da9052",
	},
};

static int __init da9052_spi_init(void)
{
	int ret;

	ret = spi_register_driver(&da9052_spi_driver);
	if (ret != 0) {
		pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
		return ret;
	}

	return 0;
}
subsys_initcall(da9052_spi_init);

static void __exit da9052_spi_exit(void)
{
	spi_unregister_driver(&da9052_spi_driver);
}
module_exit(da9052_spi_exit);

MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
MODULE_LICENSE("GPL");
Commit	Line	Data
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
cfe04478 AJ	2	/*
	3	* SPI access for Dialog DA9052 PMICs.
	4	*
	5	* Copyright(c) 2011 Dialog Semiconductor Ltd.
	6	*
	7	* Author: David Dajun Chen <dchen@diasemi.com>
cfe04478 AJ	8	*/
	9
	10	#include <linux/device.h>
	11	#include <linux/module.h>
	12	#include <linux/input.h>
	13	#include <linux/mfd/core.h>
	14	#include <linux/spi/spi.h>
	15	#include <linux/err.h>
	16
	17	#include <linux/mfd/da9052/da9052.h>
	18
f791be49	19	static int da9052_spi_probe(struct spi_device *spi)
cfe04478	20	{
e9e9d397	21	struct regmap_config config;
cfe04478 AJ	22	int ret;
cfe04478 AJ	23	const struct spi_device_id *id = spi_get_device_id(spi);
6608a5e2	24	struct da9052 *da9052;
cfe04478	25
6608a5e2	26	da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
cfe04478 AJ	27	if (!da9052)
	28	return -ENOMEM;
	29
72e341c4	30	spi->mode = SPI_MODE_0;
cfe04478 AJ	31	spi->bits_per_word = 8;
	32	spi_setup(spi);
	33
	34	da9052->dev = &spi->dev;
	35	da9052->chip_irq = spi->irq;
	36
1b1ba09c	37	spi_set_drvdata(spi, da9052);
cfe04478	38
e9e9d397 AL	39	config = da9052_regmap_config;
e9e9d397 AL	40	config.read_flag_mask = 1;
72e341c4 AW	41	config.reg_bits = 7;
	42	config.pad_bits = 1;
	43	config.val_bits = 8;
1c96a2f6 DF	44	config.use_single_read = true;
1c96a2f6 DF	45	config.use_single_write = true;
cfe04478	46
e9e9d397	47	da9052->regmap = devm_regmap_init_spi(spi, &config);
cfe04478 AJ	48	if (IS_ERR(da9052->regmap)) {
	49	ret = PTR_ERR(da9052->regmap);
	50	dev_err(&spi->dev, "Failed to allocate register map: %d\n",
	51	ret);
6608a5e2	52	return ret;
cfe04478 AJ	53	}
cfe04478 AJ	54
ad698ea4	55	return da9052_device_init(da9052, id->driver_data);
cfe04478 AJ	56	}
cfe04478 AJ	57
4740f73f	58	static int da9052_spi_remove(struct spi_device *spi)
cfe04478	59	{
1b1ba09c	60	struct da9052 *da9052 = spi_get_drvdata(spi);
cfe04478 AJ	61
cfe04478 AJ	62	da9052_device_exit(da9052);
cfe04478 AJ	63	return 0;
	64	}
	65
7e1372a4	66	static const struct spi_device_id da9052_spi_id[] = {
cfe04478 AJ	67	{"da9052", DA9052},
	68	{"da9053-aa", DA9053_AA},
	69	{"da9053-ba", DA9053_BA},
	70	{"da9053-bb", DA9053_BB},
6c049b2a	71	{"da9053-bc", DA9053_BC},
cfe04478 AJ	72	{}
	73	};
	74
	75	static struct spi_driver da9052_spi_driver = {
	76	.probe = da9052_spi_probe,
84449216	77	.remove = da9052_spi_remove,
cfe04478 AJ	78	.id_table = da9052_spi_id,
	79	.driver = {
	80	.name = "da9052",
cfe04478 AJ	81	},
	82	};
	83
	84	static int __init da9052_spi_init(void)
	85	{
	86	int ret;
	87
	88	ret = spi_register_driver(&da9052_spi_driver);
	89	if (ret != 0) {
	90	pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
	91	return ret;
	92	}
	93
	94	return 0;
	95	}
	96	subsys_initcall(da9052_spi_init);
	97
	98	static void __exit da9052_spi_exit(void)
	99	{
	100	spi_unregister_driver(&da9052_spi_driver);
	101	}
	102	module_exit(da9052_spi_exit);
	103
	104	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	105	MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
	106	MODULE_LICENSE("GPL");