diff options
Diffstat (limited to 'drivers/iio/pressure/st_pressure_spi.c')
-rw-r--r-- | drivers/iio/pressure/st_pressure_spi.c | 126 |
1 files changed, 126 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 0000000000..25cca5ad7c --- /dev/null +++ b/drivers/iio/pressure/st_pressure_spi.c @@ -0,0 +1,126 @@ +// 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/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_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, + }, + { + .compatible = "st,lps22df", + .data = LPS22DF_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; + + return st_press_common_probe(indio_dev); +} + +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 }, + { LPS22DF_PRESS_DEV_NAME }, + { "lps001wp-press" }, + { "lps25h-press", }, + { "lps331ap-press" }, + { "lps22hb-press" }, + {}, +}; +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, + .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"); +MODULE_IMPORT_NS(IIO_ST_SENSORS); |