1 /*
2 * STMicroelectronics st_lsm6dsx spi driver
3 *
4 * Copyright 2016 STMicroelectronics Inc.
5 *
6 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
7 * Denis Ciocca <denis.ciocca@st.com>
8 *
9 * Licensed under the GPL-2.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/spi/spi.h>
15 #include <linux/slab.h>
16 #include <linux/of.h>
17 #include <linux/regmap.h>
18
19 #include "st_lsm6dsx.h"
20
21 static const struct regmap_config st_lsm6dsx_spi_regmap_config = {
22 .reg_bits = 8,
23 .val_bits = 8,
24 };
25
st_lsm6dsx_spi_probe(struct spi_device * spi)26 static int st_lsm6dsx_spi_probe(struct spi_device *spi)
27 {
28 const struct spi_device_id *id = spi_get_device_id(spi);
29 int hw_id = id->driver_data;
30 struct regmap *regmap;
31
32 regmap = devm_regmap_init_spi(spi, &st_lsm6dsx_spi_regmap_config);
33 if (IS_ERR(regmap)) {
34 dev_err(&spi->dev, "Failed to register spi regmap %d\n",
35 (int)PTR_ERR(regmap));
36 return PTR_ERR(regmap);
37 }
38
39 return st_lsm6dsx_probe(&spi->dev, spi->irq,
40 hw_id, id->name, regmap);
41 }
42
43 static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
44 {
45 .compatible = "st,lsm6ds3",
46 .data = (void *)ST_LSM6DS3_ID,
47 },
48 {
49 .compatible = "st,lsm6ds3h",
50 .data = (void *)ST_LSM6DS3H_ID,
51 },
52 {
53 .compatible = "st,lsm6dsl",
54 .data = (void *)ST_LSM6DSL_ID,
55 },
56 {
57 .compatible = "st,lsm6dsm",
58 .data = (void *)ST_LSM6DSM_ID,
59 },
60 {
61 .compatible = "st,ism330dlc",
62 .data = (void *)ST_ISM330DLC_ID,
63 },
64 {},
65 };
66 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
67
68 static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
69 { ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
70 { ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
71 { ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
72 { ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
73 { ST_ISM330DLC_DEV_NAME, ST_ISM330DLC_ID },
74 {},
75 };
76 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
77
78 static struct spi_driver st_lsm6dsx_driver = {
79 .driver = {
80 .name = "st_lsm6dsx_spi",
81 .pm = &st_lsm6dsx_pm_ops,
82 .of_match_table = of_match_ptr(st_lsm6dsx_spi_of_match),
83 },
84 .probe = st_lsm6dsx_spi_probe,
85 .id_table = st_lsm6dsx_spi_id_table,
86 };
87 module_spi_driver(st_lsm6dsx_driver);
88
89 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
90 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
91 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver");
92 MODULE_LICENSE("GPL v2");
93