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 | ||
24 | static int da9052_spi_probe(struct spi_device *spi) | |
25 | { | |
26 | int ret; | |
27 | const struct spi_device_id *id = spi_get_device_id(spi); | |
28 | struct da9052 *da9052 = kzalloc(sizeof(struct da9052), GFP_KERNEL); | |
29 | ||
30 | if (!da9052) | |
31 | return -ENOMEM; | |
32 | ||
33 | spi->mode = SPI_MODE_0 | SPI_CPOL; | |
34 | spi->bits_per_word = 8; | |
35 | spi_setup(spi); | |
36 | ||
37 | da9052->dev = &spi->dev; | |
38 | da9052->chip_irq = spi->irq; | |
39 | ||
40 | dev_set_drvdata(&spi->dev, da9052); | |
41 | ||
42 | da9052_regmap_config.read_flag_mask = 1; | |
43 | da9052_regmap_config.write_flag_mask = 0; | |
44 | ||
45 | da9052->regmap = regmap_init_spi(spi, &da9052_regmap_config); | |
46 | if (IS_ERR(da9052->regmap)) { | |
47 | ret = PTR_ERR(da9052->regmap); | |
48 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
49 | ret); | |
50 | goto err; | |
51 | } | |
52 | ||
53 | ret = da9052_device_init(da9052, id->driver_data); | |
54 | if (ret != 0) | |
55 | goto err; | |
56 | ||
57 | return 0; | |
58 | ||
59 | err: | |
60 | kfree(da9052); | |
61 | return ret; | |
62 | } | |
63 | ||
64 | static int da9052_spi_remove(struct spi_device *spi) | |
65 | { | |
66 | struct da9052 *da9052 = dev_get_drvdata(&spi->dev); | |
67 | ||
68 | da9052_device_exit(da9052); | |
69 | kfree(da9052); | |
70 | ||
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}, | |
79 | {} | |
80 | }; | |
81 | ||
82 | static struct spi_driver da9052_spi_driver = { | |
83 | .probe = da9052_spi_probe, | |
84 | .remove = __devexit_p(da9052_spi_remove), | |
85 | .id_table = da9052_spi_id, | |
86 | .driver = { | |
87 | .name = "da9052", | |
88 | .bus = &spi_bus_type, | |
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"); |