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_lsm9ds0_i2c.c (1943B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * STMicroelectronics LSM9DS0 IMU driver
      4 *
      5 * Copyright (C) 2021, Intel Corporation
      6 *
      7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
      8 */
      9
     10#include <linux/i2c.h>
     11#include <linux/kernel.h>
     12#include <linux/module.h>
     13#include <linux/mod_devicetable.h>
     14#include <linux/regmap.h>
     15
     16#include <linux/iio/common/st_sensors_i2c.h>
     17
     18#include "st_lsm9ds0.h"
     19
     20static const struct of_device_id st_lsm9ds0_of_match[] = {
     21	{
     22		.compatible = "st,lsm9ds0-imu",
     23		.data = LSM9DS0_IMU_DEV_NAME,
     24	},
     25	{}
     26};
     27MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
     28
     29static const struct i2c_device_id st_lsm9ds0_id_table[] = {
     30	{ LSM9DS0_IMU_DEV_NAME },
     31	{}
     32};
     33MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);
     34
     35static const struct regmap_config st_lsm9ds0_regmap_config = {
     36	.reg_bits	= 8,
     37	.val_bits	= 8,
     38	.read_flag_mask	= 0x80,
     39};
     40
     41static int st_lsm9ds0_i2c_probe(struct i2c_client *client)
     42{
     43	const struct regmap_config *config = &st_lsm9ds0_regmap_config;
     44	struct device *dev = &client->dev;
     45	struct st_lsm9ds0 *lsm9ds0;
     46	struct regmap *regmap;
     47
     48	st_sensors_dev_name_probe(dev, client->name, sizeof(client->name));
     49
     50	lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
     51	if (!lsm9ds0)
     52		return -ENOMEM;
     53
     54	lsm9ds0->dev = dev;
     55	lsm9ds0->name = client->name;
     56	lsm9ds0->irq = client->irq;
     57
     58	regmap = devm_regmap_init_i2c(client, config);
     59	if (IS_ERR(regmap))
     60		return PTR_ERR(regmap);
     61
     62	i2c_set_clientdata(client, lsm9ds0);
     63
     64	return st_lsm9ds0_probe(lsm9ds0, regmap);
     65}
     66
     67static struct i2c_driver st_lsm9ds0_driver = {
     68	.driver = {
     69		.name = "st-lsm9ds0-i2c",
     70		.of_match_table = st_lsm9ds0_of_match,
     71	},
     72	.probe_new = st_lsm9ds0_i2c_probe,
     73	.id_table = st_lsm9ds0_id_table,
     74};
     75module_i2c_driver(st_lsm9ds0_driver);
     76
     77MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
     78MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver");
     79MODULE_LICENSE("GPL v2");
     80MODULE_IMPORT_NS(IIO_ST_SENSORS);