[linux-2.6-block.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_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
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;
1c96a2f6 DF	49	config.use_single_read = true;
1c96a2f6 DF	50	config.use_single_write = true;
cfe04478	51
e9e9d397	52	da9052->regmap = devm_regmap_init_spi(spi, &config);
cfe04478 AJ	53	if (IS_ERR(da9052->regmap)) {
	54	ret = PTR_ERR(da9052->regmap);
	55	dev_err(&spi->dev, "Failed to allocate register map: %d\n",
	56	ret);
6608a5e2	57	return ret;
cfe04478 AJ	58	}
cfe04478 AJ	59
ad698ea4	60	return da9052_device_init(da9052, id->driver_data);
cfe04478 AJ	61	}
cfe04478 AJ	62
4740f73f	63	static int da9052_spi_remove(struct spi_device *spi)
cfe04478	64	{
1b1ba09c	65	struct da9052 *da9052 = spi_get_drvdata(spi);
cfe04478 AJ	66
cfe04478 AJ	67	da9052_device_exit(da9052);
cfe04478 AJ	68	return 0;
	69	}
	70
7e1372a4	71	static const struct spi_device_id da9052_spi_id[] = {
cfe04478 AJ	72	{"da9052", DA9052},
	73	{"da9053-aa", DA9053_AA},
	74	{"da9053-ba", DA9053_BA},
	75	{"da9053-bb", DA9053_BB},
6c049b2a	76	{"da9053-bc", DA9053_BC},
cfe04478 AJ	77	{}
	78	};
	79
	80	static struct spi_driver da9052_spi_driver = {
	81	.probe = da9052_spi_probe,
84449216	82	.remove = da9052_spi_remove,
cfe04478 AJ	83	.id_table = da9052_spi_id,
	84	.driver = {
	85	.name = "da9052",
cfe04478 AJ	86	},
	87	};
	88
	89	static int __init da9052_spi_init(void)
	90	{
	91	int ret;
	92
	93	ret = spi_register_driver(&da9052_spi_driver);
	94	if (ret != 0) {
	95	pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
	96	return ret;
	97	}
	98
	99	return 0;
	100	}
	101	subsys_initcall(da9052_spi_init);
	102
	103	static void __exit da9052_spi_exit(void)
	104	{
	105	spi_unregister_driver(&da9052_spi_driver);
	106	}
	107	module_exit(da9052_spi_exit);
	108
	109	MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
	110	MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
	111	MODULE_LICENSE("GPL");