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 
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 };
62 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
63 
64 static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
65 	{ ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
66 	{ ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
67 	{ ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
68 	{ ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
69 	{},
70 };
71 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
72 
73 static struct spi_driver st_lsm6dsx_driver = {
74 	.driver = {
75 		.name = "st_lsm6dsx_spi",
76 		.pm = &st_lsm6dsx_pm_ops,
77 		.of_match_table = of_match_ptr(st_lsm6dsx_spi_of_match),
78 	},
79 	.probe = st_lsm6dsx_spi_probe,
80 	.id_table = st_lsm6dsx_spi_id_table,
81 };
82 module_spi_driver(st_lsm6dsx_driver);
83 
84 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
85 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
86 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver");
87 MODULE_LICENSE("GPL v2");
88