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

/*
 * SPI access for Dialog DA9052 PMICs.
 *
 * Copyright(c) 2011 Dialog Semiconductor Ltd.
 *
 * Author: David Dajun Chen <dchen@diasemi.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#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_rw = 1;

	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;
	}

	ret = da9052_device_init(da9052, id->driver_data);
	if (ret != 0)
		return ret;

	return 0;
}

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

	da9052_device_exit(da9052);
	return 0;
}

static 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",
		.owner = THIS_MODULE,
	},
};

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
cfe04478 AJ	1	/*
	2	* SPI access for Dialog DA9052 PMICs.
	3	*
	4	* Copyright(c) 2011 Dialog Semiconductor Ltd.
	5	*
	6	* Author: David Dajun Chen <dchen@diasemi.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/device.h>
	16	#include <linux/module.h>
	17	#include <linux/input.h>
	18	#include <linux/mfd/core.h>
	19	#include <linux/spi/spi.h>
	20	#include <linux/err.h>
	21
	22	#include <linux/mfd/da9052/da9052.h>
	23
f791be49	24	static int da9052_spi_probe(struct spi_device *spi)
cfe04478	25	{
e9e9d397	26	struct regmap_config config;
cfe04478 AJ	27	int ret;
cfe04478 AJ	28	const struct spi_device_id *id = spi_get_device_id(spi);
6608a5e2	29	struct da9052 *da9052;
cfe04478	30
6608a5e2	31	da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
cfe04478 AJ	32	if (!da9052)
	33	return -ENOMEM;
	34
72e341c4	35	spi->mode = SPI_MODE_0;
cfe04478 AJ	36	spi->bits_per_word = 8;
	37	spi_setup(spi);
	38
	39	da9052->dev = &spi->dev;
	40	da9052->chip_irq = spi->irq;
	41
1b1ba09c	42	spi_set_drvdata(spi, da9052);
cfe04478	43
e9e9d397 AL	44	config = da9052_regmap_config;
e9e9d397 AL	45	config.read_flag_mask = 1;
72e341c4 AW	46	config.reg_bits = 7;
	47	config.pad_bits = 1;
	48	config.val_bits = 8;
	49	config.use_single_rw = 1;
cfe04478	50
e9e9d397	51	da9052->regmap = devm_regmap_init_spi(spi, &config);
cfe04478 AJ	52	if (IS_ERR(da9052->regmap)) {
	53	ret = PTR_ERR(da9052->regmap);
	54	dev_err(&spi->dev, "Failed to allocate register map: %d\n",
	55	ret);
6608a5e2	56	return ret;
cfe04478 AJ	57	}
	58
	59	ret = da9052_device_init(da9052, id->driver_data);
	60	if (ret != 0)
6608a5e2	61	return ret;
cfe04478 AJ	62
cfe04478 AJ	63	return 0;
cfe04478 AJ	64	}
cfe04478 AJ	65
4740f73f	66	static int da9052_spi_remove(struct spi_device *spi)
cfe04478	67	{
1b1ba09c	68	struct da9052 *da9052 = spi_get_drvdata(spi);
cfe04478 AJ	69
cfe04478 AJ	70	da9052_device_exit(da9052);
cfe04478 AJ	71	return 0;
	72	}
	73
	74	static struct spi_device_id da9052_spi_id[] = {
	75	{"da9052", DA9052},
	76	{"da9053-aa", DA9053_AA},
	77	{"da9053-ba", DA9053_BA},
	78	{"da9053-bb", DA9053_BB},
6c049b2a	79	{"da9053-bc", DA9053_BC},
cfe04478 AJ	80	{}
	81	};
	82
	83	static struct spi_driver da9052_spi_driver = {
	84	.probe = da9052_spi_probe,
84449216	85	.remove = da9052_spi_remove,
cfe04478 AJ	86	.id_table = da9052_spi_id,
	87	.driver = {
	88	.name = "da9052",
cfe04478 AJ	89	.owner = THIS_MODULE,
	90	},
	91	};
	92
	93	static int __init da9052_spi_init(void)
	94	{
	95	int ret;
	96
	97	ret = spi_register_driver(&da9052_spi_driver);
	98	if (ret != 0) {
	99	pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
	100	return ret;
	101	}
	102
	103	return 0;
	104	}
	105	subsys_initcall(da9052_spi_init);
	106
	107	static void __exit da9052_spi_exit(void)
	108	{
	109	spi_unregister_driver(&da9052_spi_driver);
	110	}
	111	module_exit(da9052_spi_exit);
	112
	113	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	114	MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
	115	MODULE_LICENSE("GPL");