1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * STMicroelectronics st_lsm6dsx i2c driver
4  *
5  * Copyright 2016 STMicroelectronics Inc.
6  *
7  * Lorenzo Bianconi <lorenzo.bianconi@st.com>
8  * Denis Ciocca <denis.ciocca@st.com>
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/i2c.h>
14 #include <linux/slab.h>
15 #include <linux/regmap.h>
16 
17 #include "st_lsm6dsx.h"
18 
19 static const struct regmap_config st_lsm6dsx_i2c_regmap_config = {
20 	.reg_bits = 8,
21 	.val_bits = 8,
22 };
23 
st_lsm6dsx_i2c_probe(struct i2c_client * client)24 static int st_lsm6dsx_i2c_probe(struct i2c_client *client)
25 {
26 	int hw_id;
27 	struct regmap *regmap;
28 
29 	hw_id = (kernel_ulong_t)device_get_match_data(&client->dev);
30 	if (!hw_id)
31 		hw_id = i2c_client_get_device_id(client)->driver_data;
32 	if (!hw_id)
33 		return -EINVAL;
34 
35 	regmap = devm_regmap_init_i2c(client, &st_lsm6dsx_i2c_regmap_config);
36 	if (IS_ERR(regmap)) {
37 		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
38 		return PTR_ERR(regmap);
39 	}
40 
41 	return st_lsm6dsx_probe(&client->dev, client->irq, hw_id, regmap);
42 }
43 
44 static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
45 	{
46 		.compatible = "st,lsm6ds3",
47 		.data = (void *)ST_LSM6DS3_ID,
48 	},
49 	{
50 		.compatible = "st,lsm6ds3h",
51 		.data = (void *)ST_LSM6DS3H_ID,
52 	},
53 	{
54 		.compatible = "st,lsm6dsl",
55 		.data = (void *)ST_LSM6DSL_ID,
56 	},
57 	{
58 		.compatible = "st,lsm6dsm",
59 		.data = (void *)ST_LSM6DSM_ID,
60 	},
61 	{
62 		.compatible = "st,ism330dlc",
63 		.data = (void *)ST_ISM330DLC_ID,
64 	},
65 	{
66 		.compatible = "st,lsm6dso",
67 		.data = (void *)ST_LSM6DSO_ID,
68 	},
69 	{
70 		.compatible = "st,asm330lhh",
71 		.data = (void *)ST_ASM330LHH_ID,
72 	},
73 	{
74 		.compatible = "st,lsm6dsox",
75 		.data = (void *)ST_LSM6DSOX_ID,
76 	},
77 	{
78 		.compatible = "st,lsm6dsr",
79 		.data = (void *)ST_LSM6DSR_ID,
80 	},
81 	{
82 		.compatible = "st,lsm6ds3tr-c",
83 		.data = (void *)ST_LSM6DS3TRC_ID,
84 	},
85 	{
86 		.compatible = "st,ism330dhcx",
87 		.data = (void *)ST_ISM330DHCX_ID,
88 	},
89 	{
90 		.compatible = "st,lsm9ds1-imu",
91 		.data = (void *)ST_LSM9DS1_ID,
92 	},
93 	{
94 		.compatible = "st,lsm6ds0",
95 		.data = (void *)ST_LSM6DS0_ID,
96 	},
97 	{
98 		.compatible = "st,lsm6dsrx",
99 		.data = (void *)ST_LSM6DSRX_ID,
100 	},
101 	{
102 		.compatible = "st,lsm6dst",
103 		.data = (void *)ST_LSM6DST_ID,
104 	},
105 	{
106 		.compatible = "st,lsm6dsop",
107 		.data = (void *)ST_LSM6DSOP_ID,
108 	},
109 	{
110 		.compatible = "st,asm330lhhx",
111 		.data = (void *)ST_ASM330LHHX_ID,
112 	},
113 	{
114 		.compatible = "st,lsm6dstx",
115 		.data = (void *)ST_LSM6DSTX_ID,
116 	},
117 	{
118 		.compatible = "st,lsm6dsv",
119 		.data = (void *)ST_LSM6DSV_ID,
120 	},
121 	{
122 		.compatible = "st,lsm6dsv16x",
123 		.data = (void *)ST_LSM6DSV16X_ID,
124 	},
125 	{
126 		.compatible = "st,lsm6dso16is",
127 		.data = (void *)ST_LSM6DSO16IS_ID,
128 	},
129 	{
130 		.compatible = "st,ism330is",
131 		.data = (void *)ST_ISM330IS_ID,
132 	},
133 	{
134 		.compatible = "st,asm330lhb",
135 		.data = (void *)ST_ASM330LHB_ID,
136 	},
137 	{},
138 };
139 MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
140 
141 static const struct acpi_device_id st_lsm6dsx_i2c_acpi_match[] = {
142 	{ "SMO8B30", ST_LSM6DS3TRC_ID, },
143 	{}
144 };
145 MODULE_DEVICE_TABLE(acpi, st_lsm6dsx_i2c_acpi_match);
146 
147 static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
148 	{ ST_LSM6DS3_DEV_NAME, ST_LSM6DS3_ID },
149 	{ ST_LSM6DS3H_DEV_NAME, ST_LSM6DS3H_ID },
150 	{ ST_LSM6DSL_DEV_NAME, ST_LSM6DSL_ID },
151 	{ ST_LSM6DSM_DEV_NAME, ST_LSM6DSM_ID },
152 	{ ST_ISM330DLC_DEV_NAME, ST_ISM330DLC_ID },
153 	{ ST_LSM6DSO_DEV_NAME, ST_LSM6DSO_ID },
154 	{ ST_ASM330LHH_DEV_NAME, ST_ASM330LHH_ID },
155 	{ ST_LSM6DSOX_DEV_NAME, ST_LSM6DSOX_ID },
156 	{ ST_LSM6DSR_DEV_NAME, ST_LSM6DSR_ID },
157 	{ ST_LSM6DS3TRC_DEV_NAME, ST_LSM6DS3TRC_ID },
158 	{ ST_ISM330DHCX_DEV_NAME, ST_ISM330DHCX_ID },
159 	{ ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID },
160 	{ ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID },
161 	{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
162 	{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
163 	{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
164 	{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
165 	{ ST_LSM6DSTX_DEV_NAME, ST_LSM6DSTX_ID },
166 	{ ST_LSM6DSV_DEV_NAME, ST_LSM6DSV_ID },
167 	{ ST_LSM6DSV16X_DEV_NAME, ST_LSM6DSV16X_ID },
168 	{ ST_LSM6DSO16IS_DEV_NAME, ST_LSM6DSO16IS_ID },
169 	{ ST_ISM330IS_DEV_NAME, ST_ISM330IS_ID },
170 	{ ST_ASM330LHB_DEV_NAME, ST_ASM330LHB_ID },
171 	{},
172 };
173 MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);
174 
175 static struct i2c_driver st_lsm6dsx_driver = {
176 	.driver = {
177 		.name = "st_lsm6dsx_i2c",
178 		.pm = pm_sleep_ptr(&st_lsm6dsx_pm_ops),
179 		.of_match_table = st_lsm6dsx_i2c_of_match,
180 		.acpi_match_table = st_lsm6dsx_i2c_acpi_match,
181 	},
182 	.probe = st_lsm6dsx_i2c_probe,
183 	.id_table = st_lsm6dsx_i2c_id_table,
184 };
185 module_i2c_driver(st_lsm6dsx_driver);
186 
187 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
188 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
189 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i2c driver");
190 MODULE_LICENSE("GPL v2");
191 MODULE_IMPORT_NS(IIO_LSM6DSX);
192