LXR linux/drivers/iio/pressure/st_pressure

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * STMicroelectronics pressures driver
   4 *
   5 * Copyright 2013 STMicroelectronics Inc.
   6 *
   7 * Denis Ciocca <denis.ciocca@st.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/module.h>
  12#include <linux/slab.h>
  13#include <linux/spi/spi.h>
  14#include <linux/iio/iio.h>
  15
  16#include <linux/iio/common/st_sensors.h>
  17#include <linux/iio/common/st_sensors_spi.h>
  18#include "st_pressure.h"
  19
  20#ifdef CONFIG_OF
  21/*
  22 * For new single-chip sensors use <device_name> as compatible string.
  23 * For old single-chip devices keep <device_name>-press to maintain
  24 * compatibility
  25 */
  26static const struct of_device_id st_press_of_match[] = {
  27        {
  28                .compatible = "st,lps001wp-press",
  29                .data = LPS001WP_PRESS_DEV_NAME,
  30        },
  31        {
  32                .compatible = "st,lps25h-press",
  33                .data = LPS25H_PRESS_DEV_NAME,
  34        },
  35        {
  36                .compatible = "st,lps331ap-press",
  37                .data = LPS331AP_PRESS_DEV_NAME,
  38        },
  39        {
  40                .compatible = "st,lps22hb-press",
  41                .data = LPS22HB_PRESS_DEV_NAME,
  42        },
  43        {
  44                .compatible = "st,lps33hw",
  45                .data = LPS33HW_PRESS_DEV_NAME,
  46        },
  47        {
  48                .compatible = "st,lps35hw",
  49                .data = LPS35HW_PRESS_DEV_NAME,
  50        },
  51        {
  52                .compatible = "st,lps22hh",
  53                .data = LPS22HH_PRESS_DEV_NAME,
  54        },
  55        {},
  56};
  57MODULE_DEVICE_TABLE(of, st_press_of_match);
  58#else
  59#define st_press_of_match       NULL
  60#endif
  61
  62static int st_press_spi_probe(struct spi_device *spi)
  63{
  64        struct iio_dev *indio_dev;
  65        struct st_sensor_data *press_data;
  66        int err;
  67
  68        indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
  69        if (indio_dev == NULL)
  70                return -ENOMEM;
  71
  72        press_data = iio_priv(indio_dev);
  73
  74        st_sensors_of_name_probe(&spi->dev, st_press_of_match,
  75                                 spi->modalias, sizeof(spi->modalias));
  76        st_sensors_spi_configure(indio_dev, spi, press_data);
  77
  78        err = st_press_common_probe(indio_dev);
  79        if (err < 0)
  80                return err;
  81
  82        return 0;
  83}
  84
  85static int st_press_spi_remove(struct spi_device *spi)
  86{
  87        st_press_common_remove(spi_get_drvdata(spi));
  88
  89        return 0;
  90}
  91
  92static const struct spi_device_id st_press_id_table[] = {
  93        { LPS001WP_PRESS_DEV_NAME },
  94        { LPS25H_PRESS_DEV_NAME },
  95        { LPS331AP_PRESS_DEV_NAME },
  96        { LPS22HB_PRESS_DEV_NAME },
  97        { LPS33HW_PRESS_DEV_NAME },
  98        { LPS35HW_PRESS_DEV_NAME },
  99        { LPS22HH_PRESS_DEV_NAME },
 100        {},
 101};
 102MODULE_DEVICE_TABLE(spi, st_press_id_table);
 103
 104static struct spi_driver st_press_driver = {
 105        .driver = {
 106                .name = "st-press-spi",
 107                .of_match_table = of_match_ptr(st_press_of_match),
 108        },
 109        .probe = st_press_spi_probe,
 110        .remove = st_press_spi_remove,
 111        .id_table = st_press_id_table,
 112};
 113module_spi_driver(st_press_driver);
 114
 115MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 116MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
 117MODULE_LICENSE("GPL v2");
 118