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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/iio/magnetometer/st_magn_spi.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/magnetometer/st_magn_spi.c')
-rw-r--r--drivers/iio/magnetometer/st_magn_spi.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
new file mode 100644
index 000000000..6ddc43185
--- /dev/null
+++ b/drivers/iio/magnetometer/st_magn_spi.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics magnetometers driver
+ *
+ * Copyright 2012-2013 STMicroelectronics Inc.
+ *
+ * Denis Ciocca <denis.ciocca@st.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+#include <linux/iio/iio.h>
+
+#include <linux/iio/common/st_sensors.h>
+#include <linux/iio/common/st_sensors_spi.h>
+#include "st_magn.h"
+
+/*
+ * For new single-chip sensors use <device_name> as compatible string.
+ * For old single-chip devices keep <device_name>-magn to maintain
+ * compatibility
+ * For multi-chip devices, use <device_name>-magn to distinguish which
+ * capability is being used
+ */
+static const struct of_device_id st_magn_of_match[] = {
+ {
+ .compatible = "st,lis3mdl-magn",
+ .data = LIS3MDL_MAGN_DEV_NAME,
+ },
+ {
+ .compatible = "st,lsm303agr-magn",
+ .data = LSM303AGR_MAGN_DEV_NAME,
+ },
+ {
+ .compatible = "st,lis2mdl",
+ .data = LIS2MDL_MAGN_DEV_NAME,
+ },
+ {
+ .compatible = "st,lsm9ds1-magn",
+ .data = LSM9DS1_MAGN_DEV_NAME,
+ },
+ {
+ .compatible = "st,iis2mdc",
+ .data = IIS2MDC_MAGN_DEV_NAME,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, st_magn_of_match);
+
+static int st_magn_spi_probe(struct spi_device *spi)
+{
+ const struct st_sensor_settings *settings;
+ struct st_sensor_data *mdata;
+ struct iio_dev *indio_dev;
+ int err;
+
+ st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
+
+ settings = st_magn_get_settings(spi->modalias);
+ if (!settings) {
+ dev_err(&spi->dev, "device name %s not recognized.\n",
+ spi->modalias);
+ return -ENODEV;
+ }
+
+ indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*mdata));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ mdata = iio_priv(indio_dev);
+ mdata->sensor_settings = (struct st_sensor_settings *)settings;
+
+ err = st_sensors_spi_configure(indio_dev, spi);
+ if (err < 0)
+ return err;
+
+ err = st_sensors_power_enable(indio_dev);
+ if (err)
+ return err;
+
+ return st_magn_common_probe(indio_dev);
+}
+
+static const struct spi_device_id st_magn_id_table[] = {
+ { LIS3MDL_MAGN_DEV_NAME },
+ { LSM303AGR_MAGN_DEV_NAME },
+ { LIS2MDL_MAGN_DEV_NAME },
+ { LSM9DS1_MAGN_DEV_NAME },
+ { IIS2MDC_MAGN_DEV_NAME },
+ {},
+};
+MODULE_DEVICE_TABLE(spi, st_magn_id_table);
+
+static struct spi_driver st_magn_driver = {
+ .driver = {
+ .name = "st-magn-spi",
+ .of_match_table = st_magn_of_match,
+ },
+ .probe = st_magn_spi_probe,
+ .id_table = st_magn_id_table,
+};
+module_spi_driver(st_magn_driver);
+
+MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);