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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ad7606_par.c (2629B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * AD7606 Parallel Interface ADC driver
      4 *
      5 * Copyright 2011 Analog Devices Inc.
      6 */
      7
      8#include <linux/module.h>
      9#include <linux/platform_device.h>
     10#include <linux/types.h>
     11#include <linux/err.h>
     12#include <linux/io.h>
     13
     14#include <linux/iio/iio.h>
     15#include "ad7606.h"
     16
     17static int ad7606_par16_read_block(struct device *dev,
     18				   int count, void *buf)
     19{
     20	struct iio_dev *indio_dev = dev_get_drvdata(dev);
     21	struct ad7606_state *st = iio_priv(indio_dev);
     22
     23	insw((unsigned long)st->base_address, buf, count);
     24
     25	return 0;
     26}
     27
     28static const struct ad7606_bus_ops ad7606_par16_bops = {
     29	.read_block = ad7606_par16_read_block,
     30};
     31
     32static int ad7606_par8_read_block(struct device *dev,
     33				  int count, void *buf)
     34{
     35	struct iio_dev *indio_dev = dev_get_drvdata(dev);
     36	struct ad7606_state *st = iio_priv(indio_dev);
     37
     38	insb((unsigned long)st->base_address, buf, count * 2);
     39
     40	return 0;
     41}
     42
     43static const struct ad7606_bus_ops ad7606_par8_bops = {
     44	.read_block = ad7606_par8_read_block,
     45};
     46
     47static int ad7606_par_probe(struct platform_device *pdev)
     48{
     49	const struct platform_device_id *id = platform_get_device_id(pdev);
     50	struct resource *res;
     51	void __iomem *addr;
     52	resource_size_t remap_size;
     53	int irq;
     54
     55	irq = platform_get_irq(pdev, 0);
     56	if (irq < 0)
     57		return irq;
     58
     59	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
     60	addr = devm_ioremap_resource(&pdev->dev, res);
     61	if (IS_ERR(addr))
     62		return PTR_ERR(addr);
     63
     64	remap_size = resource_size(res);
     65
     66	return ad7606_probe(&pdev->dev, irq, addr,
     67			    id->name, id->driver_data,
     68			    remap_size > 1 ? &ad7606_par16_bops :
     69			    &ad7606_par8_bops);
     70}
     71
     72static const struct platform_device_id ad7606_driver_ids[] = {
     73	{ .name	= "ad7605-4", .driver_data = ID_AD7605_4, },
     74	{ .name	= "ad7606-4", .driver_data = ID_AD7606_4, },
     75	{ .name	= "ad7606-6", .driver_data = ID_AD7606_6, },
     76	{ .name	= "ad7606-8", .driver_data = ID_AD7606_8, },
     77	{ }
     78};
     79MODULE_DEVICE_TABLE(platform, ad7606_driver_ids);
     80
     81static const struct of_device_id ad7606_of_match[] = {
     82	{ .compatible = "adi,ad7605-4" },
     83	{ .compatible = "adi,ad7606-4" },
     84	{ .compatible = "adi,ad7606-6" },
     85	{ .compatible = "adi,ad7606-8" },
     86	{ },
     87};
     88MODULE_DEVICE_TABLE(of, ad7606_of_match);
     89
     90static struct platform_driver ad7606_driver = {
     91	.probe = ad7606_par_probe,
     92	.id_table = ad7606_driver_ids,
     93	.driver = {
     94		.name = "ad7606",
     95		.pm = AD7606_PM_OPS,
     96		.of_match_table = ad7606_of_match,
     97	},
     98};
     99module_platform_driver(ad7606_driver);
    100
    101MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
    102MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
    103MODULE_LICENSE("GPL v2");
    104MODULE_IMPORT_NS(IIO_AD7606);