LXR linux/drivers/iio/pressure/st_pressure

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