1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * STMicroelectronics accelerometers driver
4 *
5 * Copyright 2012-2013 STMicroelectronics Inc.
6 *
7 * Denis Ciocca <denis.ciocca@st.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/iio/iio.h>
15
16 #include <linux/iio/common/st_sensors.h>
17 #include <linux/iio/common/st_sensors_spi.h>
18 #include "st_accel.h"
19
20 /*
21 * For new single-chip sensors use <device_name> as compatible string.
22 * For old single-chip devices keep <device_name>-accel to maintain
23 * compatibility
24 */
25 static const struct of_device_id st_accel_of_match[] = {
26 {
27 /* An older compatible */
28 .compatible = "st,lis302dl-spi",
29 .data = LIS3LV02DL_ACCEL_DEV_NAME,
30 },
31 {
32 .compatible = "st,lis3lv02dl-accel",
33 .data = LIS3LV02DL_ACCEL_DEV_NAME,
34 },
35 {
36 .compatible = "st,lis3dh-accel",
37 .data = LIS3DH_ACCEL_DEV_NAME,
38 },
39 {
40 .compatible = "st,lsm330d-accel",
41 .data = LSM330D_ACCEL_DEV_NAME,
42 },
43 {
44 .compatible = "st,lsm330dl-accel",
45 .data = LSM330DL_ACCEL_DEV_NAME,
46 },
47 {
48 .compatible = "st,lsm330dlc-accel",
49 .data = LSM330DLC_ACCEL_DEV_NAME,
50 },
51 {
52 .compatible = "st,lis331dlh-accel",
53 .data = LIS331DLH_ACCEL_DEV_NAME,
54 },
55 {
56 .compatible = "st,lsm330-accel",
57 .data = LSM330_ACCEL_DEV_NAME,
58 },
59 {
60 .compatible = "st,lsm303agr-accel",
61 .data = LSM303AGR_ACCEL_DEV_NAME,
62 },
63 {
64 .compatible = "st,lis2dh12-accel",
65 .data = LIS2DH12_ACCEL_DEV_NAME,
66 },
67 {
68 .compatible = "st,lis3l02dq",
69 .data = LIS3L02DQ_ACCEL_DEV_NAME,
70 },
71 {
72 .compatible = "st,lng2dm-accel",
73 .data = LNG2DM_ACCEL_DEV_NAME,
74 },
75 {
76 .compatible = "st,h3lis331dl-accel",
77 .data = H3LIS331DL_ACCEL_DEV_NAME,
78 },
79 {
80 .compatible = "st,lis331dl-accel",
81 .data = LIS331DL_ACCEL_DEV_NAME,
82 },
83 {
84 .compatible = "st,lis2dw12",
85 .data = LIS2DW12_ACCEL_DEV_NAME,
86 },
87 {
88 .compatible = "st,lis3dhh",
89 .data = LIS3DHH_ACCEL_DEV_NAME,
90 },
91 {
92 .compatible = "st,lis3de",
93 .data = LIS3DE_ACCEL_DEV_NAME,
94 },
95 {
96 .compatible = "st,lis302dl",
97 .data = LIS302DL_ACCEL_DEV_NAME,
98 },
99 {
100 .compatible = "st,lsm303c-accel",
101 .data = LSM303C_ACCEL_DEV_NAME,
102 },
103 {
104 .compatible = "st,iis328dq",
105 .data = IIS328DQ_ACCEL_DEV_NAME,
106 },
107 {}
108 };
109 MODULE_DEVICE_TABLE(of, st_accel_of_match);
110
st_accel_spi_probe(struct spi_device * spi)111 static int st_accel_spi_probe(struct spi_device *spi)
112 {
113 const struct st_sensor_settings *settings;
114 struct st_sensor_data *adata;
115 struct iio_dev *indio_dev;
116 int err;
117
118 st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
119
120 settings = st_accel_get_settings(spi->modalias);
121 if (!settings) {
122 dev_err(&spi->dev, "device name %s not recognized.\n",
123 spi->modalias);
124 return -ENODEV;
125 }
126
127 indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata));
128 if (!indio_dev)
129 return -ENOMEM;
130
131 adata = iio_priv(indio_dev);
132 adata->sensor_settings = (struct st_sensor_settings *)settings;
133
134 err = st_sensors_spi_configure(indio_dev, spi);
135 if (err < 0)
136 return err;
137
138 err = st_sensors_power_enable(indio_dev);
139 if (err)
140 return err;
141
142 return st_accel_common_probe(indio_dev);
143 }
144
145 static const struct spi_device_id st_accel_id_table[] = {
146 { LIS3DH_ACCEL_DEV_NAME },
147 { LSM330D_ACCEL_DEV_NAME },
148 { LSM330DL_ACCEL_DEV_NAME },
149 { LSM330DLC_ACCEL_DEV_NAME },
150 { LIS331DLH_ACCEL_DEV_NAME },
151 { LSM330_ACCEL_DEV_NAME },
152 { LSM303AGR_ACCEL_DEV_NAME },
153 { LIS2DH12_ACCEL_DEV_NAME },
154 { LIS3L02DQ_ACCEL_DEV_NAME },
155 { LNG2DM_ACCEL_DEV_NAME },
156 { H3LIS331DL_ACCEL_DEV_NAME },
157 { LIS331DL_ACCEL_DEV_NAME },
158 { LIS3LV02DL_ACCEL_DEV_NAME },
159 { LIS2DW12_ACCEL_DEV_NAME },
160 { LIS3DHH_ACCEL_DEV_NAME },
161 { LIS3DE_ACCEL_DEV_NAME },
162 { LIS302DL_ACCEL_DEV_NAME },
163 { LSM303C_ACCEL_DEV_NAME },
164 { IIS328DQ_ACCEL_DEV_NAME },
165 {},
166 };
167 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
168
169 static struct spi_driver st_accel_driver = {
170 .driver = {
171 .name = "st-accel-spi",
172 .of_match_table = st_accel_of_match,
173 },
174 .probe = st_accel_spi_probe,
175 .id_table = st_accel_id_table,
176 };
177 module_spi_driver(st_accel_driver);
178
179 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
180 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
181 MODULE_LICENSE("GPL v2");
182 MODULE_IMPORT_NS(IIO_ST_SENSORS);
183