From 4a9b37371822c6b47fdd87118e4f91b5ebc70b6f Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Tue, 13 May 2014 17:11:28 +0800 Subject: [PATCH] power: reset: move hisilicon reboot code Move reboot code from hisilicon platform driver into reset driver. Signed-off-by: Haojian Zhuang Acked-by: Wei Xu Signed-off-by: Olof Johansson --- arch/arm/mach-hisi/Kconfig | 3 ++ arch/arm/mach-hisi/hisilicon.c | 33 --------------- drivers/power/reset/Kconfig | 6 +++ drivers/power/reset/Makefile | 1 + drivers/power/reset/hisi-reboot.c | 67 +++++++++++++++++++++++++++++++ 5 files changed, 77 insertions(+), 33 deletions(-) create mode 100644 drivers/power/reset/hisi-reboot.c diff --git a/arch/arm/mach-hisi/Kconfig b/arch/arm/mach-hisi/Kconfig index 90fdbb4ae00a..984882943f77 100644 --- a/arch/arm/mach-hisi/Kconfig +++ b/arch/arm/mach-hisi/Kconfig @@ -4,6 +4,9 @@ config ARCH_HISI select ARM_AMBA select ARM_GIC select ARM_TIMER_SP804 + select POWER_RESET + select POWER_RESET_HISI + select POWER_SUPPLY if ARCH_HISI diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c index 2bfbe3f1392d..7996c6b74339 100644 --- a/arch/arm/mach-hisi/hisilicon.c +++ b/arch/arm/mach-hisi/hisilicon.c @@ -14,10 +14,6 @@ #include #include #include -#include -#include - -#include #include #include @@ -51,32 +47,6 @@ static void __init hi3620_map_io(void) iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc)); } -static void hi3xxx_restart(enum reboot_mode mode, const char *cmd) -{ - struct device_node *np; - void __iomem *base; - int offset; - - np = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl"); - if (!np) { - pr_err("failed to find hisilicon,sysctrl node\n"); - return; - } - base = of_iomap(np, 0); - if (!base) { - pr_err("failed to map address in hisilicon,sysctrl node\n"); - return; - } - if (of_property_read_u32(np, "reboot-offset", &offset) < 0) { - pr_err("failed to find reboot-offset property\n"); - return; - } - writel_relaxed(0xdeadbeef, base + offset); - - while (1) - cpu_do_idle(); -} - static const char *hi3xxx_compat[] __initconst = { "hisilicon,hi3620-hi4511", NULL, @@ -86,7 +56,6 @@ DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)") .map_io = hi3620_map_io, .dt_compat = hi3xxx_compat, .smp = smp_ops(hi3xxx_smp_ops), - .restart = hi3xxx_restart, MACHINE_END static const char *hix5hd2_compat[] __initconst = { @@ -96,7 +65,5 @@ static const char *hix5hd2_compat[] __initconst = { DT_MACHINE_START(HIX5HD2_DT, "Hisilicon HIX5HD2 (Flattened Device Tree)") .dt_compat = hix5hd2_compat, - .init_late = hi3xxx_init_late, .smp = smp_ops(hix5hd2_smp_ops), - .restart = hi3xxx_restart, MACHINE_END diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index bdcf5173e377..4127f494b651 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -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 diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index dde2e8bbac53..fe0f22877e58 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -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 diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c new file mode 100644 index 000000000000..0c91d0231d36 --- /dev/null +++ b/drivers/power/reset/hisi-reboot.c @@ -0,0 +1,67 @@ +/* + * Hisilicon SoC reset code + * + * Copyright (c) 2014 Hisilicon Ltd. + * Copyright (c) 2014 Linaro Ltd. + * + * Author: Haojian Zhuang + * + * 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 +#include +#include +#include +#include +#include + +#include +#include + +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); -- 2.20.1