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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; |
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; |
45 | config.read_flag_mask = 1; | |
72e341c4 AW |
46 | config.reg_bits = 7; |
47 | config.pad_bits = 1; | |
48 | config.val_bits = 8; | |
49 | config.use_single_rw = 1; | |
cfe04478 | 50 | |
e9e9d397 | 51 | da9052->regmap = devm_regmap_init_spi(spi, &config); |
cfe04478 AJ |
52 | if (IS_ERR(da9052->regmap)) { |
53 | ret = PTR_ERR(da9052->regmap); | |
54 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
55 | ret); | |
6608a5e2 | 56 | return ret; |
cfe04478 AJ |
57 | } |
58 | ||
ad698ea4 | 59 | return da9052_device_init(da9052, id->driver_data); |
cfe04478 AJ |
60 | } |
61 | ||
4740f73f | 62 | static int da9052_spi_remove(struct spi_device *spi) |
cfe04478 | 63 | { |
1b1ba09c | 64 | struct da9052 *da9052 = spi_get_drvdata(spi); |
cfe04478 AJ |
65 | |
66 | da9052_device_exit(da9052); | |
cfe04478 AJ |
67 | return 0; |
68 | } | |
69 | ||
70 | static struct spi_device_id da9052_spi_id[] = { | |
71 | {"da9052", DA9052}, | |
72 | {"da9053-aa", DA9053_AA}, | |
73 | {"da9053-ba", DA9053_BA}, | |
74 | {"da9053-bb", DA9053_BB}, | |
6c049b2a | 75 | {"da9053-bc", DA9053_BC}, |
cfe04478 AJ |
76 | {} |
77 | }; | |
78 | ||
79 | static struct spi_driver da9052_spi_driver = { | |
80 | .probe = da9052_spi_probe, | |
84449216 | 81 | .remove = da9052_spi_remove, |
cfe04478 AJ |
82 | .id_table = da9052_spi_id, |
83 | .driver = { | |
84 | .name = "da9052", | |
cfe04478 AJ |
85 | }, |
86 | }; | |
87 | ||
88 | static int __init da9052_spi_init(void) | |
89 | { | |
90 | int ret; | |
91 | ||
92 | ret = spi_register_driver(&da9052_spi_driver); | |
93 | if (ret != 0) { | |
94 | pr_err("Failed to register DA9052 SPI driver, %d\n", ret); | |
95 | return ret; | |
96 | } | |
97 | ||
98 | return 0; | |
99 | } | |
100 | subsys_initcall(da9052_spi_init); | |
101 | ||
102 | static void __exit da9052_spi_exit(void) | |
103 | { | |
104 | spi_unregister_driver(&da9052_spi_driver); | |
105 | } | |
106 | module_exit(da9052_spi_exit); | |
107 | ||
108 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
109 | MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC"); | |
110 | MODULE_LICENSE("GPL"); |