1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * STMicroelectronics uvis25 spi driver |
4 | * |
5 | * Copyright 2017 STMicroelectronics Inc. |
6 | * |
7 | * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
8 | */ |
9 | |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> |
12 | #include <linux/mod_devicetable.h> |
13 | #include <linux/spi/spi.h> |
14 | #include <linux/slab.h> |
15 | #include <linux/regmap.h> |
16 | |
17 | #include "st_uvis25.h" |
18 | |
19 | #define UVIS25_SENSORS_SPI_READ BIT(7) |
20 | #define UVIS25_SPI_AUTO_INCREMENT BIT(6) |
21 | |
22 | static const struct regmap_config st_uvis25_spi_regmap_config = { |
23 | .reg_bits = 8, |
24 | .val_bits = 8, |
25 | .read_flag_mask = UVIS25_SENSORS_SPI_READ | UVIS25_SPI_AUTO_INCREMENT, |
26 | .write_flag_mask = UVIS25_SPI_AUTO_INCREMENT, |
27 | }; |
28 | |
29 | static int st_uvis25_spi_probe(struct spi_device *spi) |
30 | { |
31 | struct regmap *regmap; |
32 | |
33 | regmap = devm_regmap_init_spi(spi, &st_uvis25_spi_regmap_config); |
34 | if (IS_ERR(ptr: regmap)) { |
35 | dev_err(&spi->dev, "Failed to register spi regmap %ld\n" , |
36 | PTR_ERR(regmap)); |
37 | return PTR_ERR(ptr: regmap); |
38 | } |
39 | |
40 | return st_uvis25_probe(dev: &spi->dev, irq: spi->irq, regmap); |
41 | } |
42 | |
43 | static const struct of_device_id st_uvis25_spi_of_match[] = { |
44 | { .compatible = "st,uvis25" , }, |
45 | {}, |
46 | }; |
47 | MODULE_DEVICE_TABLE(of, st_uvis25_spi_of_match); |
48 | |
49 | static const struct spi_device_id st_uvis25_spi_id_table[] = { |
50 | { ST_UVIS25_DEV_NAME }, |
51 | {}, |
52 | }; |
53 | MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table); |
54 | |
55 | static struct spi_driver st_uvis25_driver = { |
56 | .driver = { |
57 | .name = "st_uvis25_spi" , |
58 | .pm = pm_sleep_ptr(&st_uvis25_pm_ops), |
59 | .of_match_table = st_uvis25_spi_of_match, |
60 | }, |
61 | .probe = st_uvis25_spi_probe, |
62 | .id_table = st_uvis25_spi_id_table, |
63 | }; |
64 | module_spi_driver(st_uvis25_driver); |
65 | |
66 | MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>" ); |
67 | MODULE_DESCRIPTION("STMicroelectronics uvis25 spi driver" ); |
68 | MODULE_LICENSE("GPL v2" ); |
69 | MODULE_IMPORT_NS(IIO_UVIS25); |
70 | |