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_gyro_i2c.c (2822B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * STMicroelectronics gyroscopes driver
      4 *
      5 * Copyright 2012-2013 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/i2c.h>
     14#include <linux/iio/iio.h>
     15
     16#include <linux/iio/common/st_sensors.h>
     17#include <linux/iio/common/st_sensors_i2c.h>
     18#include "st_gyro.h"
     19
     20static const struct of_device_id st_gyro_of_match[] = {
     21	{
     22		.compatible = "st,l3g4200d-gyro",
     23		.data = L3G4200D_GYRO_DEV_NAME,
     24	},
     25	{
     26		.compatible = "st,lsm330d-gyro",
     27		.data = LSM330D_GYRO_DEV_NAME,
     28	},
     29	{
     30		.compatible = "st,lsm330dl-gyro",
     31		.data = LSM330DL_GYRO_DEV_NAME,
     32	},
     33	{
     34		.compatible = "st,lsm330dlc-gyro",
     35		.data = LSM330DLC_GYRO_DEV_NAME,
     36	},
     37	{
     38		.compatible = "st,l3gd20-gyro",
     39		.data = L3GD20_GYRO_DEV_NAME,
     40	},
     41	{
     42		.compatible = "st,l3gd20h-gyro",
     43		.data = L3GD20H_GYRO_DEV_NAME,
     44	},
     45	{
     46		.compatible = "st,l3g4is-gyro",
     47		.data = L3G4IS_GYRO_DEV_NAME,
     48	},
     49	{
     50		.compatible = "st,lsm330-gyro",
     51		.data = LSM330_GYRO_DEV_NAME,
     52	},
     53	{
     54		.compatible = "st,lsm9ds0-gyro",
     55		.data = LSM9DS0_GYRO_DEV_NAME,
     56	},
     57	{},
     58};
     59MODULE_DEVICE_TABLE(of, st_gyro_of_match);
     60
     61static int st_gyro_i2c_probe(struct i2c_client *client,
     62			     const struct i2c_device_id *id)
     63{
     64	const struct st_sensor_settings *settings;
     65	struct st_sensor_data *gdata;
     66	struct iio_dev *indio_dev;
     67	int err;
     68
     69	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
     70
     71	settings = st_gyro_get_settings(client->name);
     72	if (!settings) {
     73		dev_err(&client->dev, "device name %s not recognized.\n",
     74			client->name);
     75		return -ENODEV;
     76	}
     77
     78	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*gdata));
     79	if (!indio_dev)
     80		return -ENOMEM;
     81
     82	gdata = iio_priv(indio_dev);
     83	gdata->sensor_settings = (struct st_sensor_settings *)settings;
     84
     85	err = st_sensors_i2c_configure(indio_dev, client);
     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_gyro_common_probe(indio_dev);
     94}
     95
     96static const struct i2c_device_id st_gyro_id_table[] = {
     97	{ L3G4200D_GYRO_DEV_NAME },
     98	{ LSM330D_GYRO_DEV_NAME },
     99	{ LSM330DL_GYRO_DEV_NAME },
    100	{ LSM330DLC_GYRO_DEV_NAME },
    101	{ L3GD20_GYRO_DEV_NAME },
    102	{ L3GD20H_GYRO_DEV_NAME },
    103	{ L3G4IS_GYRO_DEV_NAME },
    104	{ LSM330_GYRO_DEV_NAME },
    105	{ LSM9DS0_GYRO_DEV_NAME },
    106	{},
    107};
    108MODULE_DEVICE_TABLE(i2c, st_gyro_id_table);
    109
    110static struct i2c_driver st_gyro_driver = {
    111	.driver = {
    112		.name = "st-gyro-i2c",
    113		.of_match_table = st_gyro_of_match,
    114	},
    115	.probe = st_gyro_i2c_probe,
    116	.id_table = st_gyro_id_table,
    117};
    118module_i2c_driver(st_gyro_driver);
    119
    120MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
    121MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
    122MODULE_LICENSE("GPL v2");
    123MODULE_IMPORT_NS(IIO_ST_SENSORS);