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 */
 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		.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};
109MODULE_DEVICE_TABLE(of, st_accel_of_match);
110
111static 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
145static 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};
167MODULE_DEVICE_TABLE(spi, st_accel_id_table);
168
169static 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};
177module_spi_driver(st_accel_driver);
178
179MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
180MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
181MODULE_LICENSE("GPL v2");
182MODULE_IMPORT_NS(IIO_ST_SENSORS);