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_spi.c (1882B)

      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/kernel.h>
     11#include <linux/module.h>
     12#include <linux/mod_devicetable.h>
     13#include <linux/regmap.h>
     14#include <linux/spi/spi.h>
     15
     16#include <linux/iio/common/st_sensors_spi.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 spi_device_id st_lsm9ds0_id_table[] = {
     30	{ LSM9DS0_IMU_DEV_NAME },
     31	{}
     32};
     33MODULE_DEVICE_TABLE(spi, 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	= 0xc0,
     39};
     40
     41static int st_lsm9ds0_spi_probe(struct spi_device *spi)
     42{
     43	struct device *dev = &spi->dev;
     44	struct st_lsm9ds0 *lsm9ds0;
     45	struct regmap *regmap;
     46
     47	st_sensors_dev_name_probe(dev, spi->modalias, sizeof(spi->modalias));
     48
     49	lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
     50	if (!lsm9ds0)
     51		return -ENOMEM;
     52
     53	lsm9ds0->dev = dev;
     54	lsm9ds0->name = spi->modalias;
     55	lsm9ds0->irq = spi->irq;
     56
     57	regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config);
     58	if (IS_ERR(regmap))
     59		return PTR_ERR(regmap);
     60
     61	spi_set_drvdata(spi, lsm9ds0);
     62
     63	return st_lsm9ds0_probe(lsm9ds0, regmap);
     64}
     65
     66static struct spi_driver st_lsm9ds0_driver = {
     67	.driver = {
     68		.name = "st-lsm9ds0-spi",
     69		.of_match_table = st_lsm9ds0_of_match,
     70	},
     71	.probe = st_lsm9ds0_spi_probe,
     72	.id_table = st_lsm9ds0_id_table,
     73};
     74module_spi_driver(st_lsm9ds0_driver);
     75
     76MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
     77MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");
     78MODULE_LICENSE("GPL v2");
     79MODULE_IMPORT_NS(IIO_ST_SENSORS);