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/slab.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 */
25static 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};
97MODULE_DEVICE_TABLE(of, st_accel_of_match);
98
99static int st_accel_spi_probe(struct spi_device *spi)
100{
101	const struct st_sensor_settings *settings;
102	struct st_sensor_data *adata;
103	struct iio_dev *indio_dev;
104	int err;
105
106	st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
107
108	settings = st_accel_get_settings(spi->modalias);
109	if (!settings) {
110		dev_err(&spi->dev, "device name %s not recognized.\n",
111			spi->modalias);
112		return -ENODEV;
113	}
114
115	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata));
116	if (!indio_dev)
117		return -ENOMEM;
118
119	adata = iio_priv(indio_dev);
120	adata->sensor_settings = (struct st_sensor_settings *)settings;
121
122	err = st_sensors_spi_configure(indio_dev, spi);
123	if (err < 0)
124		return err;
125
126	err = st_sensors_power_enable(indio_dev);
127	if (err)
128		return err;
129
130	err = st_accel_common_probe(indio_dev);
131	if (err < 0)
132		goto st_accel_power_off;
133
134	return 0;
135
136st_accel_power_off:
137	st_sensors_power_disable(indio_dev);
138
139	return err;
140}
141
142static int st_accel_spi_remove(struct spi_device *spi)
143{
144	struct iio_dev *indio_dev = spi_get_drvdata(spi);
145
146	st_accel_common_remove(indio_dev);
147
148	st_sensors_power_disable(indio_dev);
149
150	return 0;
151}
152
153static const struct spi_device_id st_accel_id_table[] = {
154	{ LIS3DH_ACCEL_DEV_NAME },
155	{ LSM330D_ACCEL_DEV_NAME },
156	{ LSM330DL_ACCEL_DEV_NAME },
157	{ LSM330DLC_ACCEL_DEV_NAME },
158	{ LIS331DLH_ACCEL_DEV_NAME },
159	{ LSM330_ACCEL_DEV_NAME },
160	{ LSM303AGR_ACCEL_DEV_NAME },
161	{ LIS2DH12_ACCEL_DEV_NAME },
162	{ LIS3L02DQ_ACCEL_DEV_NAME },
163	{ LNG2DM_ACCEL_DEV_NAME },
164	{ H3LIS331DL_ACCEL_DEV_NAME },
165	{ LIS331DL_ACCEL_DEV_NAME },
166	{ LIS3LV02DL_ACCEL_DEV_NAME },
167	{ LIS2DW12_ACCEL_DEV_NAME },
168	{ LIS3DHH_ACCEL_DEV_NAME },
169	{ LIS3DE_ACCEL_DEV_NAME },
170	{},
171};
172MODULE_DEVICE_TABLE(spi, st_accel_id_table);
173
174static struct spi_driver st_accel_driver = {
175	.driver = {
176		.name = "st-accel-spi",
177		.of_match_table = st_accel_of_match,
178	},
179	.probe = st_accel_spi_probe,
180	.remove = st_accel_spi_remove,
181	.id_table = st_accel_id_table,
182};
183module_spi_driver(st_accel_driver);
184
185MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
186MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
187MODULE_LICENSE("GPL v2");
188