Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu /drivers/iio/pressure/st_pressure_spi.c
Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
/*
 * STMicroelectronics pressures driver
 *
 * Copyright 2013 STMicroelectronics Inc.
 *
 * Denis Ciocca <denis.ciocca@st.com>
 *
 * Licensed under the GPL-2.
 */

#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"

#ifdef CONFIG_OF
/*
 * 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,
	},
	{},
};
MODULE_DEVICE_TABLE(of, st_press_of_match);
#else
#define st_press_of_match	NULL
#endif

static int st_press_spi_probe(struct spi_device *spi)
{
	struct iio_dev *indio_dev;
	struct st_sensor_data *press_data;
	int err;

	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
	if (indio_dev == NULL)
		return -ENOMEM;

	press_data = iio_priv(indio_dev);

	st_sensors_of_name_probe(&spi->dev, st_press_of_match,
				 spi->modalias, sizeof(spi->modalias));
	st_sensors_spi_configure(indio_dev, spi, press_data);

	err = st_press_common_probe(indio_dev);
	if (err < 0)
		return err;

	return 0;
}

static int st_press_spi_remove(struct spi_device *spi)
{
	st_press_common_remove(spi_get_drvdata(spi));

	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 },
	{},
};
MODULE_DEVICE_TABLE(spi, st_press_id_table);

static struct spi_driver st_press_driver = {
	.driver = {
		.name = "st-press-spi",
		.of_match_table = of_match_ptr(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");