1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* 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)
{
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_CPOL;
spi->bits_per_word = 8;
spi_setup(spi);
da9052->dev = &spi->dev;
da9052->chip_irq = spi->irq;
dev_set_drvdata(&spi->dev, da9052);
da9052_regmap_config.read_flag_mask = 1;
da9052_regmap_config.write_flag_mask = 0;
da9052->regmap = devm_regmap_init_spi(spi, &da9052_regmap_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 = dev_get_drvdata(&spi->dev);
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},
{}
};
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");
|
