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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cpm_gpio.c (1633B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Common CPM GPIO wrapper for the CPM GPIO ports
      4 *
      5 * Author: Christophe Leroy <christophe.leroy@c-s.fr>
      6 *
      7 * Copyright 2017 CS Systemes d'Information.
      8 *
      9 */
     10
     11#include <linux/module.h>
     12#include <linux/of_device.h>
     13
     14#include <asm/cpm.h>
     15#ifdef CONFIG_8xx_GPIO
     16#include <asm/cpm1.h>
     17#endif
     18
     19static int cpm_gpio_probe(struct platform_device *ofdev)
     20{
     21	struct device *dev = &ofdev->dev;
     22	int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);
     23
     24	if (!gp_add)
     25		return -ENODEV;
     26
     27	return gp_add(dev);
     28}
     29
     30static const struct of_device_id cpm_gpio_match[] = {
     31#ifdef CONFIG_8xx_GPIO
     32	{
     33		.compatible = "fsl,cpm1-pario-bank-a",
     34		.data = cpm1_gpiochip_add16,
     35	},
     36	{
     37		.compatible = "fsl,cpm1-pario-bank-b",
     38		.data = cpm1_gpiochip_add32,
     39	},
     40	{
     41		.compatible = "fsl,cpm1-pario-bank-c",
     42		.data = cpm1_gpiochip_add16,
     43	},
     44	{
     45		.compatible = "fsl,cpm1-pario-bank-d",
     46		.data = cpm1_gpiochip_add16,
     47	},
     48	/* Port E uses CPM2 layout */
     49	{
     50		.compatible = "fsl,cpm1-pario-bank-e",
     51		.data = cpm2_gpiochip_add32,
     52	},
     53#endif
     54	{
     55		.compatible = "fsl,cpm2-pario-bank",
     56		.data = cpm2_gpiochip_add32,
     57	},
     58	{},
     59};
     60MODULE_DEVICE_TABLE(of, cpm_gpio_match);
     61
     62static struct platform_driver cpm_gpio_driver = {
     63	.probe		= cpm_gpio_probe,
     64	.driver		= {
     65		.name	= "cpm-gpio",
     66		.of_match_table	= cpm_gpio_match,
     67	},
     68};
     69
     70static int __init cpm_gpio_init(void)
     71{
     72	return platform_driver_register(&cpm_gpio_driver);
     73}
     74arch_initcall(cpm_gpio_init);
     75
     76MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>");
     77MODULE_DESCRIPTION("Driver for CPM GPIO");
     78MODULE_LICENSE("GPL");
     79MODULE_ALIAS("platform:cpm-gpio");