2 * SPI access for Dialog DA9052 PMICs.
4 * Copyright(c) 2011 Dialog Semiconductor Ltd.
6 * Author: David Dajun Chen <dchen@diasemi.com>
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.
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>
22 #include <linux/mfd/da9052/da9052.h>
24 static int da9052_spi_probe(struct spi_device *spi)
26 struct regmap_config config;
28 const struct spi_device_id *id = spi_get_device_id(spi);
29 struct da9052 *da9052;
31 da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
35 spi->mode = SPI_MODE_0;
36 spi->bits_per_word = 8;
39 da9052->dev = &spi->dev;
40 da9052->chip_irq = spi->irq;
42 spi_set_drvdata(spi, da9052);
44 config = da9052_regmap_config;
45 config.read_flag_mask = 1;
49 config.use_single_rw = 1;
51 da9052->regmap = devm_regmap_init_spi(spi, &config);
52 if (IS_ERR(da9052->regmap)) {
53 ret = PTR_ERR(da9052->regmap);
54 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
59 return da9052_device_init(da9052, id->driver_data);
62 static int da9052_spi_remove(struct spi_device *spi)
64 struct da9052 *da9052 = spi_get_drvdata(spi);
66 da9052_device_exit(da9052);
70 static struct spi_device_id da9052_spi_id[] = {
72 {"da9053-aa", DA9053_AA},
73 {"da9053-ba", DA9053_BA},
74 {"da9053-bb", DA9053_BB},
75 {"da9053-bc", DA9053_BC},
79 static struct spi_driver da9052_spi_driver = {
80 .probe = da9052_spi_probe,
81 .remove = da9052_spi_remove,
82 .id_table = da9052_spi_id,
88 static int __init da9052_spi_init(void)
92 ret = spi_register_driver(&da9052_spi_driver);
94 pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
100 subsys_initcall(da9052_spi_init);
102 static void __exit da9052_spi_exit(void)
104 spi_unregister_driver(&da9052_spi_driver);
106 module_exit(da9052_spi_exit);
108 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
109 MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
110 MODULE_LICENSE("GPL");