iio/accel/st_accel_spi.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * STMicroelectronics accelerometers driver
0004  *
0005  * Copyright 2012-2013 STMicroelectronics Inc.
0006  *
0007  * Denis Ciocca <denis.ciocca@st.com>
0008  */
0009
0010 #include <linux/kernel.h>
0011 #include <linux/module.h>
0012 #include <linux/mod_devicetable.h>
0013 #include <linux/spi/spi.h>
0014 #include <linux/iio/iio.h>
0015
0016 #include <linux/iio/common/st_sensors.h>
0017 #include <linux/iio/common/st_sensors_spi.h>
0018 #include "st_accel.h"
0019
0020 /*
0021  * For new single-chip sensors use <device_name> as compatible string.
0022  * For old single-chip devices keep <device_name>-accel to maintain
0023  * compatibility
0024  */
0025 static const struct of_device_id st_accel_of_match[] = {
0026     {
0027         /* An older compatible */
0028         .compatible = "st,lis302dl-spi",
0029         .data = LIS3LV02DL_ACCEL_DEV_NAME,
0030     },
0031     {
0032         .compatible = "st,lis3lv02dl-accel",
0033         .data = LIS3LV02DL_ACCEL_DEV_NAME,
0034     },
0035     {
0036         .compatible = "st,lis3dh-accel",
0037         .data = LIS3DH_ACCEL_DEV_NAME,
0038     },
0039     {
0040         .compatible = "st,lsm330d-accel",
0041         .data = LSM330D_ACCEL_DEV_NAME,
0042     },
0043     {
0044         .compatible = "st,lsm330dl-accel",
0045         .data = LSM330DL_ACCEL_DEV_NAME,
0046     },
0047     {
0048         .compatible = "st,lsm330dlc-accel",
0049         .data = LSM330DLC_ACCEL_DEV_NAME,
0050     },
0051     {
0052         .compatible = "st,lis331dlh-accel",
0053         .data = LIS331DLH_ACCEL_DEV_NAME,
0054     },
0055     {
0056         .compatible = "st,lsm330-accel",
0057         .data = LSM330_ACCEL_DEV_NAME,
0058     },
0059     {
0060         .compatible = "st,lsm303agr-accel",
0061         .data = LSM303AGR_ACCEL_DEV_NAME,
0062     },
0063     {
0064         .compatible = "st,lis2dh12-accel",
0065         .data = LIS2DH12_ACCEL_DEV_NAME,
0066     },
0067     {
0068         .compatible = "st,lis3l02dq",
0069         .data = LIS3L02DQ_ACCEL_DEV_NAME,
0070     },
0071     {
0072         .compatible = "st,lng2dm-accel",
0073         .data = LNG2DM_ACCEL_DEV_NAME,
0074     },
0075     {
0076         .compatible = "st,h3lis331dl-accel",
0077         .data = H3LIS331DL_ACCEL_DEV_NAME,
0078     },
0079     {
0080         .compatible = "st,lis331dl-accel",
0081         .data = LIS331DL_ACCEL_DEV_NAME,
0082     },
0083     {
0084         .compatible = "st,lis2dw12",
0085         .data = LIS2DW12_ACCEL_DEV_NAME,
0086     },
0087     {
0088         .compatible = "st,lis3dhh",
0089         .data = LIS3DHH_ACCEL_DEV_NAME,
0090     },
0091     {
0092         .compatible = "st,lis3de",
0093         .data = LIS3DE_ACCEL_DEV_NAME,
0094     },
0095     {
0096         .compatible = "st,lis302dl",
0097         .data = LIS302DL_ACCEL_DEV_NAME,
0098     },
0099     {}
0100 };
0101 MODULE_DEVICE_TABLE(of, st_accel_of_match);
0102
0103 static int st_accel_spi_probe(struct spi_device *spi)
0104 {
0105     const struct st_sensor_settings *settings;
0106     struct st_sensor_data *adata;
0107     struct iio_dev *indio_dev;
0108     int err;
0109
0110     st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
0111
0112     settings = st_accel_get_settings(spi->modalias);
0113     if (!settings) {
0114         dev_err(&spi->dev, "device name %s not recognized.\n",
0115             spi->modalias);
0116         return -ENODEV;
0117     }
0118
0119     indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adata));
0120     if (!indio_dev)
0121         return -ENOMEM;
0122
0123     adata = iio_priv(indio_dev);
0124     adata->sensor_settings = (struct st_sensor_settings *)settings;
0125
0126     err = st_sensors_spi_configure(indio_dev, spi);
0127     if (err < 0)
0128         return err;
0129
0130     err = st_sensors_power_enable(indio_dev);
0131     if (err)
0132         return err;
0133
0134     return st_accel_common_probe(indio_dev);
0135 }
0136
0137 static const struct spi_device_id st_accel_id_table[] = {
0138     { LIS3DH_ACCEL_DEV_NAME },
0139     { LSM330D_ACCEL_DEV_NAME },
0140     { LSM330DL_ACCEL_DEV_NAME },
0141     { LSM330DLC_ACCEL_DEV_NAME },
0142     { LIS331DLH_ACCEL_DEV_NAME },
0143     { LSM330_ACCEL_DEV_NAME },
0144     { LSM303AGR_ACCEL_DEV_NAME },
0145     { LIS2DH12_ACCEL_DEV_NAME },
0146     { LIS3L02DQ_ACCEL_DEV_NAME },
0147     { LNG2DM_ACCEL_DEV_NAME },
0148     { H3LIS331DL_ACCEL_DEV_NAME },
0149     { LIS331DL_ACCEL_DEV_NAME },
0150     { LIS3LV02DL_ACCEL_DEV_NAME },
0151     { LIS2DW12_ACCEL_DEV_NAME },
0152     { LIS3DHH_ACCEL_DEV_NAME },
0153     { LIS3DE_ACCEL_DEV_NAME },
0154     { LIS302DL_ACCEL_DEV_NAME },
0155     {},
0156 };
0157 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
0158
0159 static struct spi_driver st_accel_driver = {
0160     .driver = {
0161         .name = "st-accel-spi",
0162         .of_match_table = st_accel_of_match,
0163     },
0164     .probe = st_accel_spi_probe,
0165     .id_table = st_accel_id_table,
0166 };
0167 module_spi_driver(st_accel_driver);
0168
0169 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
0170 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
0171 MODULE_LICENSE("GPL v2");
0172 MODULE_IMPORT_NS(IIO_ST_SENSORS);