mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 05:02:12 +00:00
4a9b373718
Move reboot code from hisilicon platform driver into reset driver. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Acked-by: Wei Xu <xuwei5@hisilicon.com> Signed-off-by: Olof Johansson <olof@lixom.net>
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/*
|
|
* Hisilicon SoC reset code
|
|
*
|
|
* Copyright (c) 2014 Hisilicon Ltd.
|
|
* Copyright (c) 2014 Linaro Ltd.
|
|
*
|
|
* Author: Haojian Zhuang <haojian.zhuang@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/reboot.h>
|
|
|
|
#include <asm/proc-fns.h>
|
|
#include <asm/system_misc.h>
|
|
|
|
static void __iomem *base;
|
|
static u32 reboot_offset;
|
|
|
|
static void hisi_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
writel_relaxed(0xdeadbeef, base + reboot_offset);
|
|
|
|
while (1)
|
|
cpu_do_idle();
|
|
}
|
|
|
|
static int hisi_reboot_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
|
|
base = of_iomap(np, 0);
|
|
if (!base) {
|
|
WARN(1, "failed to map base address");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (of_property_read_u32(np, "reboot-offset", &reboot_offset) < 0) {
|
|
pr_err("failed to find reboot-offset property\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
arm_pm_restart = hisi_restart;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct of_device_id hisi_reboot_of_match[] = {
|
|
{ .compatible = "hisilicon,sysctrl" },
|
|
{}
|
|
};
|
|
|
|
static struct platform_driver hisi_reboot_driver = {
|
|
.probe = hisi_reboot_probe,
|
|
.driver = {
|
|
.name = "hisi-reboot",
|
|
.of_match_table = hisi_reboot_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(hisi_reboot_driver);
|