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Diffstat (limited to 'drivers/iio/pressure/st_pressure_spi.c')
-rw-r--r--drivers/iio/pressure/st_pressure_spi.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
new file mode 100644
index 000000000..8cf8cd3b4
--- /dev/null
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics pressures driver
+ *
+ * Copyright 2013 STMicroelectronics Inc.
+ *
+ * Denis Ciocca <denis.ciocca@st.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.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_pressure.h"
+
+/*
+ * For new single-chip sensors use <device_name> as compatible string.
+ * For old single-chip devices keep <device_name>-press to maintain
+ * compatibility
+ */
+static const struct of_device_id st_press_of_match[] = {
+ {
+ .compatible = "st,lps001wp-press",
+ .data = LPS001WP_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps25h-press",
+ .data = LPS25H_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps331ap-press",
+ .data = LPS331AP_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps22hb-press",
+ .data = LPS22HB_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps33hw",
+ .data = LPS33HW_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps35hw",
+ .data = LPS35HW_PRESS_DEV_NAME,
+ },
+ {
+ .compatible = "st,lps22hh",
+ .data = LPS22HH_PRESS_DEV_NAME,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, st_press_of_match);
+
+static int st_press_spi_probe(struct spi_device *spi)
+{
+ const struct st_sensor_settings *settings;
+ struct st_sensor_data *press_data;
+ struct iio_dev *indio_dev;
+ int err;
+
+ st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
+
+ settings = st_press_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(*press_data));
+ if (!indio_dev)
+ return -ENOMEM;
+
+ press_data = iio_priv(indio_dev);
+ press_data->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;
+
+ err = st_press_common_probe(indio_dev);
+ if (err < 0)
+ goto st_press_power_off;
+
+ return 0;
+
+st_press_power_off:
+ st_sensors_power_disable(indio_dev);
+
+ return err;
+}
+
+static int st_press_spi_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+
+ st_press_common_remove(indio_dev);
+
+ st_sensors_power_disable(indio_dev);
+
+ return 0;
+}
+
+static const struct spi_device_id st_press_id_table[] = {
+ { LPS001WP_PRESS_DEV_NAME },
+ { LPS25H_PRESS_DEV_NAME },
+ { LPS331AP_PRESS_DEV_NAME },
+ { LPS22HB_PRESS_DEV_NAME },
+ { LPS33HW_PRESS_DEV_NAME },
+ { LPS35HW_PRESS_DEV_NAME },
+ { LPS22HH_PRESS_DEV_NAME },
+ {},
+};
+MODULE_DEVICE_TABLE(spi, st_press_id_table);
+
+static struct spi_driver st_press_driver = {
+ .driver = {
+ .name = "st-press-spi",
+ .of_match_table = st_press_of_match,
+ },
+ .probe = st_press_spi_probe,
+ .remove = st_press_spi_remove,
+ .id_table = st_press_id_table,
+};
+module_spi_driver(st_press_driver);
+
+MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
+MODULE_LICENSE("GPL v2");