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/mod_devicetable.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/*
 21 * For new single-chip sensors use <device_name> as compatible string.
 22 * For old single-chip devices keep <device_name>-press to maintain
 23 * compatibility
 24 */
 25static const struct of_device_id st_press_of_match[] = {
 26	{
 27		.compatible = "st,lps001wp-press",
 28		.data = LPS001WP_PRESS_DEV_NAME,
 29	},
 30	{
 31		.compatible = "st,lps25h-press",
 32		.data = LPS25H_PRESS_DEV_NAME,
 33	},
 34	{
 35		.compatible = "st,lps331ap-press",
 36		.data = LPS331AP_PRESS_DEV_NAME,
 37	},
 38	{
 39		.compatible = "st,lps22hb-press",
 40		.data = LPS22HB_PRESS_DEV_NAME,
 41	},
 42	{
 43		.compatible = "st,lps33hw",
 44		.data = LPS33HW_PRESS_DEV_NAME,
 45	},
 46	{
 47		.compatible = "st,lps35hw",
 48		.data = LPS35HW_PRESS_DEV_NAME,
 49	},
 50	{
 51		.compatible = "st,lps22hh",
 52		.data = LPS22HH_PRESS_DEV_NAME,
 53	},
 54	{
 55		.compatible = "st,lps22df",
 56		.data = LPS22DF_PRESS_DEV_NAME,
 57	},
 58	{},
 59};
 60MODULE_DEVICE_TABLE(of, st_press_of_match);
 61
 62static int st_press_spi_probe(struct spi_device *spi)
 63{
 64	const struct st_sensor_settings *settings;
 65	struct st_sensor_data *press_data;
 66	struct iio_dev *indio_dev;
 67	int err;
 68
 69	st_sensors_dev_name_probe(&spi->dev, spi->modalias, sizeof(spi->modalias));
 70
 71	settings = st_press_get_settings(spi->modalias);
 72	if (!settings) {
 73		dev_err(&spi->dev, "device name %s not recognized.\n",
 74			spi->modalias);
 75		return -ENODEV;
 76	}
 77
 78	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*press_data));
 79	if (!indio_dev)
 80		return -ENOMEM;
 81
 82	press_data = iio_priv(indio_dev);
 83	press_data->sensor_settings = (struct st_sensor_settings *)settings;
 84
 85	err = st_sensors_spi_configure(indio_dev, spi);
 86	if (err < 0)
 87		return err;
 88
 89	err = st_sensors_power_enable(indio_dev);
 90	if (err)
 91		return err;
 92
 93	return st_press_common_probe(indio_dev);
 94}
 95
 96static const struct spi_device_id st_press_id_table[] = {
 97	{ LPS001WP_PRESS_DEV_NAME },
 98	{ LPS25H_PRESS_DEV_NAME },
 99	{ LPS331AP_PRESS_DEV_NAME },
100	{ LPS22HB_PRESS_DEV_NAME },
101	{ LPS33HW_PRESS_DEV_NAME },
102	{ LPS35HW_PRESS_DEV_NAME },
103	{ LPS22HH_PRESS_DEV_NAME },
104	{ LPS22DF_PRESS_DEV_NAME },
105	{ "lps001wp-press" },
106	{ "lps25h-press", },
107	{ "lps331ap-press" },
108	{ "lps22hb-press" },
109	{},
110};
111MODULE_DEVICE_TABLE(spi, st_press_id_table);
112
113static struct spi_driver st_press_driver = {
114	.driver = {
115		.name = "st-press-spi",
116		.of_match_table = st_press_of_match,
117	},
118	.probe = st_press_spi_probe,
119	.id_table = st_press_id_table,
120};
121module_spi_driver(st_press_driver);
122
123MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
124MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
125MODULE_LICENSE("GPL v2");
126MODULE_IMPORT_NS(IIO_ST_SENSORS);