cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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st_pressure_i2c.c (2960B)

      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/acpi.h>
     11#include <linux/kernel.h>
     12#include <linux/module.h>
     13#include <linux/mod_devicetable.h>
     14#include <linux/i2c.h>
     15#include <linux/iio/iio.h>
     16
     17#include <linux/iio/common/st_sensors.h>
     18#include <linux/iio/common/st_sensors_i2c.h>
     19#include "st_pressure.h"
     20
     21static const struct of_device_id st_press_of_match[] = {
     22	{
     23		.compatible = "st,lps001wp-press",
     24		.data = LPS001WP_PRESS_DEV_NAME,
     25	},
     26	{
     27		.compatible = "st,lps25h-press",
     28		.data = LPS25H_PRESS_DEV_NAME,
     29	},
     30	{
     31		.compatible = "st,lps331ap-press",
     32		.data = LPS331AP_PRESS_DEV_NAME,
     33	},
     34	{
     35		.compatible = "st,lps22hb-press",
     36		.data = LPS22HB_PRESS_DEV_NAME,
     37	},
     38	{
     39		.compatible = "st,lps33hw",
     40		.data = LPS33HW_PRESS_DEV_NAME,
     41	},
     42	{
     43		.compatible = "st,lps35hw",
     44		.data = LPS35HW_PRESS_DEV_NAME,
     45	},
     46	{
     47		.compatible = "st,lps22hh",
     48		.data = LPS22HH_PRESS_DEV_NAME,
     49	},
     50	{},
     51};
     52MODULE_DEVICE_TABLE(of, st_press_of_match);
     53
     54#ifdef CONFIG_ACPI
     55static const struct acpi_device_id st_press_acpi_match[] = {
     56	{"SNO9210", LPS22HB},
     57	{ },
     58};
     59MODULE_DEVICE_TABLE(acpi, st_press_acpi_match);
     60#endif
     61
     62static const struct i2c_device_id st_press_id_table[] = {
     63	{ LPS001WP_PRESS_DEV_NAME, LPS001WP },
     64	{ LPS25H_PRESS_DEV_NAME,  LPS25H },
     65	{ LPS331AP_PRESS_DEV_NAME, LPS331AP },
     66	{ LPS22HB_PRESS_DEV_NAME, LPS22HB },
     67	{ LPS33HW_PRESS_DEV_NAME, LPS33HW },
     68	{ LPS35HW_PRESS_DEV_NAME, LPS35HW },
     69	{ LPS22HH_PRESS_DEV_NAME, LPS22HH },
     70	{},
     71};
     72MODULE_DEVICE_TABLE(i2c, st_press_id_table);
     73
     74static int st_press_i2c_probe(struct i2c_client *client,
     75			      const struct i2c_device_id *id)
     76{
     77	const struct st_sensor_settings *settings;
     78	struct st_sensor_data *press_data;
     79	struct iio_dev *indio_dev;
     80	int ret;
     81
     82	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
     83
     84	settings = st_press_get_settings(client->name);
     85	if (!settings) {
     86		dev_err(&client->dev, "device name %s not recognized.\n",
     87			client->name);
     88		return -ENODEV;
     89	}
     90
     91	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*press_data));
     92	if (!indio_dev)
     93		return -ENOMEM;
     94
     95	press_data = iio_priv(indio_dev);
     96	press_data->sensor_settings = (struct st_sensor_settings *)settings;
     97
     98	ret = st_sensors_i2c_configure(indio_dev, client);
     99	if (ret < 0)
    100		return ret;
    101
    102	ret = st_sensors_power_enable(indio_dev);
    103	if (ret)
    104		return ret;
    105
    106	return st_press_common_probe(indio_dev);
    107}
    108
    109static struct i2c_driver st_press_driver = {
    110	.driver = {
    111		.name = "st-press-i2c",
    112		.of_match_table = st_press_of_match,
    113		.acpi_match_table = ACPI_PTR(st_press_acpi_match),
    114	},
    115	.probe = st_press_i2c_probe,
    116	.id_table = st_press_id_table,
    117};
    118module_i2c_driver(st_press_driver);
    119
    120MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
    121MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
    122MODULE_LICENSE("GPL v2");
    123MODULE_IMPORT_NS(IIO_ST_SENSORS);