Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
cfe04478 AJ |
2 | /* |
3 | * SPI access for Dialog DA9052 PMICs. | |
4 | * | |
5 | * Copyright(c) 2011 Dialog Semiconductor Ltd. | |
6 | * | |
7 | * Author: David Dajun Chen <dchen@diasemi.com> | |
cfe04478 AJ |
8 | */ |
9 | ||
10 | #include <linux/device.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/input.h> | |
13 | #include <linux/mfd/core.h> | |
14 | #include <linux/spi/spi.h> | |
15 | #include <linux/err.h> | |
16 | ||
17 | #include <linux/mfd/da9052/da9052.h> | |
18 | ||
f791be49 | 19 | static int da9052_spi_probe(struct spi_device *spi) |
cfe04478 | 20 | { |
e9e9d397 | 21 | struct regmap_config config; |
cfe04478 AJ |
22 | int ret; |
23 | const struct spi_device_id *id = spi_get_device_id(spi); | |
6608a5e2 | 24 | struct da9052 *da9052; |
cfe04478 | 25 | |
6608a5e2 | 26 | da9052 = devm_kzalloc(&spi->dev, sizeof(struct da9052), GFP_KERNEL); |
cfe04478 AJ |
27 | if (!da9052) |
28 | return -ENOMEM; | |
29 | ||
72e341c4 | 30 | spi->mode = SPI_MODE_0; |
cfe04478 AJ |
31 | spi->bits_per_word = 8; |
32 | spi_setup(spi); | |
33 | ||
34 | da9052->dev = &spi->dev; | |
35 | da9052->chip_irq = spi->irq; | |
36 | ||
1b1ba09c | 37 | spi_set_drvdata(spi, da9052); |
cfe04478 | 38 | |
e9e9d397 AL |
39 | config = da9052_regmap_config; |
40 | config.read_flag_mask = 1; | |
72e341c4 AW |
41 | config.reg_bits = 7; |
42 | config.pad_bits = 1; | |
43 | config.val_bits = 8; | |
1c96a2f6 DF |
44 | config.use_single_read = true; |
45 | config.use_single_write = true; | |
cfe04478 | 46 | |
e9e9d397 | 47 | da9052->regmap = devm_regmap_init_spi(spi, &config); |
cfe04478 AJ |
48 | if (IS_ERR(da9052->regmap)) { |
49 | ret = PTR_ERR(da9052->regmap); | |
50 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
51 | ret); | |
6608a5e2 | 52 | return ret; |
cfe04478 AJ |
53 | } |
54 | ||
ad698ea4 | 55 | return da9052_device_init(da9052, id->driver_data); |
cfe04478 AJ |
56 | } |
57 | ||
a0386bba | 58 | static void da9052_spi_remove(struct spi_device *spi) |
cfe04478 | 59 | { |
1b1ba09c | 60 | struct da9052 *da9052 = spi_get_drvdata(spi); |
cfe04478 AJ |
61 | |
62 | da9052_device_exit(da9052); | |
cfe04478 AJ |
63 | } |
64 | ||
7e1372a4 | 65 | static const struct spi_device_id da9052_spi_id[] = { |
cfe04478 AJ |
66 | {"da9052", DA9052}, |
67 | {"da9053-aa", DA9053_AA}, | |
68 | {"da9053-ba", DA9053_BA}, | |
69 | {"da9053-bb", DA9053_BB}, | |
6c049b2a | 70 | {"da9053-bc", DA9053_BC}, |
cfe04478 AJ |
71 | {} |
72 | }; | |
73 | ||
74 | static struct spi_driver da9052_spi_driver = { | |
75 | .probe = da9052_spi_probe, | |
84449216 | 76 | .remove = da9052_spi_remove, |
cfe04478 AJ |
77 | .id_table = da9052_spi_id, |
78 | .driver = { | |
79 | .name = "da9052", | |
cfe04478 AJ |
80 | }, |
81 | }; | |
82 | ||
83 | static int __init da9052_spi_init(void) | |
84 | { | |
85 | int ret; | |
86 | ||
87 | ret = spi_register_driver(&da9052_spi_driver); | |
88 | if (ret != 0) { | |
89 | pr_err("Failed to register DA9052 SPI driver, %d\n", ret); | |
90 | return ret; | |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | subsys_initcall(da9052_spi_init); | |
96 | ||
97 | static void __exit da9052_spi_exit(void) | |
98 | { | |
99 | spi_unregister_driver(&da9052_spi_driver); | |
100 | } | |
101 | module_exit(da9052_spi_exit); | |
102 | ||
103 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); | |
104 | MODULE_DESCRIPTION("SPI driver for Dialog DA9052 PMIC"); | |
105 | MODULE_LICENSE("GPL"); |