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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e5aab7b0d8
Initial support for ST LPS22HH pressure sensor. Datasheet: http://www2.st.com/resource/en/datasheet/lps22hh.pdf Features: * pressure, temperature data and timestamping channels * sampling frequency selection [1..200] Hz * interrupt based trigger * over I2C or SPI interface Signed-off-by: mario tesi <mario.tesi@st.com> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/*
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* STMicroelectronics pressures driver
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*
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* Copyright 2013 STMicroelectronics Inc.
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*
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* Denis Ciocca <denis.ciocca@st.com>
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/spi/spi.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/common/st_sensors.h>
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#include <linux/iio/common/st_sensors_spi.h>
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#include "st_pressure.h"
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#ifdef CONFIG_OF
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/*
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* For new single-chip sensors use <device_name> as compatible string.
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* For old single-chip devices keep <device_name>-press to maintain
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* compatibility
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*/
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static const struct of_device_id st_press_of_match[] = {
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{
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.compatible = "st,lps001wp-press",
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.data = LPS001WP_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps25h-press",
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.data = LPS25H_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps331ap-press",
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.data = LPS331AP_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps22hb-press",
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.data = LPS22HB_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps33hw",
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.data = LPS33HW_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps35hw",
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.data = LPS35HW_PRESS_DEV_NAME,
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},
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{
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.compatible = "st,lps22hh",
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.data = LPS22HH_PRESS_DEV_NAME,
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, st_press_of_match);
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#else
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#define st_press_of_match NULL
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#endif
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static int st_press_spi_probe(struct spi_device *spi)
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{
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struct iio_dev *indio_dev;
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struct st_sensor_data *press_data;
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int err;
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indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
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if (indio_dev == NULL)
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return -ENOMEM;
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press_data = iio_priv(indio_dev);
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st_sensors_of_name_probe(&spi->dev, st_press_of_match,
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spi->modalias, sizeof(spi->modalias));
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st_sensors_spi_configure(indio_dev, spi, press_data);
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err = st_press_common_probe(indio_dev);
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if (err < 0)
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return err;
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return 0;
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}
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static int st_press_spi_remove(struct spi_device *spi)
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{
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st_press_common_remove(spi_get_drvdata(spi));
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return 0;
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}
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static const struct spi_device_id st_press_id_table[] = {
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{ LPS001WP_PRESS_DEV_NAME },
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{ LPS25H_PRESS_DEV_NAME },
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{ LPS331AP_PRESS_DEV_NAME },
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{ LPS22HB_PRESS_DEV_NAME },
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{ LPS33HW_PRESS_DEV_NAME },
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{ LPS35HW_PRESS_DEV_NAME },
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{ LPS22HH_PRESS_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(spi, st_press_id_table);
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static struct spi_driver st_press_driver = {
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.driver = {
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.name = "st-press-spi",
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.of_match_table = of_match_ptr(st_press_of_match),
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},
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.probe = st_press_spi_probe,
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.remove = st_press_spi_remove,
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.id_table = st_press_id_table,
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};
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module_spi_driver(st_press_driver);
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MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
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MODULE_LICENSE("GPL v2");
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