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 __devinit da9052_spi_probe(struct spi_device *spi)
27 const struct spi_device_id *id = spi_get_device_id(spi);
28 struct da9052 *da9052;
30 da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL);
34 spi->mode = SPI_MODE_0 | SPI_CPOL;
35 spi->bits_per_word = 8;
38 da9052->dev = &spi->dev;
39 da9052->chip_irq = spi->irq;
41 dev_set_drvdata(&spi->dev, da9052);
43 da9052_regmap_config.read_flag_mask = 1;
44 da9052_regmap_config.write_flag_mask = 0;
46 da9052->regmap = devm_regmap_init_spi(spi, &da9052_regmap_config);
47 if (IS_ERR(da9052->regmap)) {
48 ret = PTR_ERR(da9052->regmap);
49 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
54 ret = da9052_device_init(da9052, id->driver_data);
61 static int __devexit da9052_spi_remove(struct spi_device *spi)
63 struct da9052 *da9052 = dev_get_drvdata(&spi->dev);
65 da9052_device_exit(da9052);
69 static struct spi_device_id da9052_spi_id[] = {
71 {"da9053-aa", DA9053_AA},
72 {"da9053-ba", DA9053_BA},
73 {"da9053-bb", DA9053_BB},
77 static struct spi_driver da9052_spi_driver = {
78 .probe = da9052_spi_probe,
79 .remove = __devexit_p(da9052_spi_remove),
80 .id_table = da9052_spi_id,
87 static int __init da9052_spi_init(void)
91 ret = spi_register_driver(&da9052_spi_driver);
93 pr_err("Failed to register DA9052 SPI driver, %d\n", ret);
99 subsys_initcall(da9052_spi_init);
101 static void __exit da9052_spi_exit(void)
103 spi_unregister_driver(&da9052_spi_driver);
105 module_exit(da9052_spi_exit);
107 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
108 MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC");
109 MODULE_LICENSE("GPL");