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power: reset: move hisilicon reboot code

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Move reboot code from hisilicon platform driver into reset driver.

Signed-off-by: Haojian Zhuang <[email protected]>
Acked-by: Wei Xu <[email protected]>
Signed-off-by: Olof Johansson <[email protected]>
This commit is contained in:
Haojian Zhuang 2014-05-13 17:11:28 +08:00 • committed by Olof Johansson
commit 4a9b373718
5 changed files with 77 additions and 33 deletions
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6
drivers/power/reset/Kconfig
View file

@ -28,6 +28,12 @@ config POWER_RESET_GPIO
If your board needs a GPIO high/low to power down, say Y and
create a binding in your devicetree.
config POWER_RESET_HISI
bool "Hisilicon power-off driver"
depends on POWER_RESET && ARCH_HISI
help
Reboot support for Hisilicon boards.
config POWER_RESET_MSM
bool "Qualcomm MSM power-off driver"
depends on POWER_RESET && ARCH_QCOM

1
drivers/power/reset/Makefile
View file

@ -1,6 +1,7 @@
obj-$(CONFIG_POWER_RESET_AS3722) += as3722-poweroff.o
obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o
obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o
obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o
obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o

67
drivers/power/reset/hisi-reboot.c Normal file
View file

@ -0,0 +1,67 @@
/*
* 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);