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_uvis25_spi.c (1772B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * STMicroelectronics uvis25 spi driver
      4 *
      5 * Copyright 2017 STMicroelectronics Inc.
      6 *
      7 * Lorenzo Bianconi <lorenzo.bianconi83@gmail.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/slab.h>
     15#include <linux/regmap.h>
     16
     17#include "st_uvis25.h"
     18
     19#define UVIS25_SENSORS_SPI_READ		BIT(7)
     20#define UVIS25_SPI_AUTO_INCREMENT	BIT(6)
     21
     22static const struct regmap_config st_uvis25_spi_regmap_config = {
     23	.reg_bits = 8,
     24	.val_bits = 8,
     25	.read_flag_mask = UVIS25_SENSORS_SPI_READ | UVIS25_SPI_AUTO_INCREMENT,
     26	.write_flag_mask = UVIS25_SPI_AUTO_INCREMENT,
     27};
     28
     29static int st_uvis25_spi_probe(struct spi_device *spi)
     30{
     31	struct regmap *regmap;
     32
     33	regmap = devm_regmap_init_spi(spi, &st_uvis25_spi_regmap_config);
     34	if (IS_ERR(regmap)) {
     35		dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
     36			PTR_ERR(regmap));
     37		return PTR_ERR(regmap);
     38	}
     39
     40	return st_uvis25_probe(&spi->dev, spi->irq, regmap);
     41}
     42
     43static const struct of_device_id st_uvis25_spi_of_match[] = {
     44	{ .compatible = "st,uvis25", },
     45	{},
     46};
     47MODULE_DEVICE_TABLE(of, st_uvis25_spi_of_match);
     48
     49static const struct spi_device_id st_uvis25_spi_id_table[] = {
     50	{ ST_UVIS25_DEV_NAME },
     51	{},
     52};
     53MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table);
     54
     55static struct spi_driver st_uvis25_driver = {
     56	.driver = {
     57		.name = "st_uvis25_spi",
     58		.pm = &st_uvis25_pm_ops,
     59		.of_match_table = st_uvis25_spi_of_match,
     60	},
     61	.probe = st_uvis25_spi_probe,
     62	.id_table = st_uvis25_spi_id_table,
     63};
     64module_spi_driver(st_uvis25_driver);
     65
     66MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
     67MODULE_DESCRIPTION("STMicroelectronics uvis25 spi driver");
     68MODULE_LICENSE("GPL v2");
     69MODULE_IMPORT_NS(IIO_UVIS25);