arm: vexpress: Move the poweroff/restart code to drivers/power/reset

This patch moves the arch/arm/mach-vexpress/reset.c functionality to
drivers/platform/reset/ and adds the necessary Kconfig wiring.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>

3 files changed, 4 insertions, 142 deletions

diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index 52d315b792c8..0f1c5e53fb27 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -17,6 +17,9 @@ config ARCH_VEXPRESS
 	select NO_IOPORT
 	select PLAT_VERSATILE
 	select PLAT_VERSATILE_CLCD
+	select POWER_RESET
+	select POWER_RESET_VEXPRESS
+	select POWER_SUPPLY
 	select REGULATOR_FIXED_VOLTAGE if REGULATOR
 	select VEXPRESS_CONFIG
 	help
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile
index 80b64971fbdd..42703e8b4d3b 100644
--- a/arch/arm/mach-vexpress/Makefile
+++ b/arch/arm/mach-vexpress/Makefile
@@ -4,7 +4,7 @@
 ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
 	-I$(srctree)/arch/arm/plat-versatile/include
 
-obj-y					:= v2m.o reset.o
+obj-y					:= v2m.o
 obj-$(CONFIG_ARCH_VEXPRESS_CA9X4)	+= ct-ca9x4.o
 obj-$(CONFIG_SMP)			+= platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
diff --git a/arch/arm/mach-vexpress/reset.c b/arch/arm/mach-vexpress/reset.c
deleted file mode 100644
index 465923aa3819..000000000000
--- a/arch/arm/mach-vexpress/reset.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * Copyright (C) 2012 ARM Limited
- */
-
-#include <linux/jiffies.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <linux/stat.h>
-#include <linux/vexpress.h>
-
-static void vexpress_reset_do(struct device *dev, const char *what)
-{
-	int err = -ENOENT;
-	struct vexpress_config_func *func =
-			vexpress_config_func_get_by_dev(dev);
-
-	if (func) {
-		unsigned long timeout;
-
-		err = vexpress_config_write(func, 0, 0);
-
-		timeout = jiffies + HZ;
-		while (time_before(jiffies, timeout))
-			cpu_relax();
-	}
-
-	dev_emerg(dev, "Unable to %s (%d)\n", what, err);
-}
-
-static struct device *vexpress_power_off_device;
-
-void vexpress_power_off(void)
-{
-	vexpress_reset_do(vexpress_power_off_device, "power off");
-}
-
-static struct device *vexpress_restart_device;
-
-void vexpress_restart(char str, const char *cmd)
-{
-	vexpress_reset_do(vexpress_restart_device, "restart");
-}
-
-static ssize_t vexpress_reset_active_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	return sprintf(buf, "%d\n", vexpress_restart_device == dev);
-}
-
-static ssize_t vexpress_reset_active_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	long value;
-	int err = kstrtol(buf, 0, &value);
-
-	if (!err && value)
-		vexpress_restart_device = dev;
-
-	return err ? err : count;
-}
-
-DEVICE_ATTR(active, S_IRUGO | S_IWUSR, vexpress_reset_active_show,
-		vexpress_reset_active_store);
-
-
-enum vexpress_reset_func { FUNC_RESET, FUNC_SHUTDOWN, FUNC_REBOOT };
-
-static struct of_device_id vexpress_reset_of_match[] = {
-	{
-		.compatible = "arm,vexpress-reset",
-		.data = (void *)FUNC_RESET,
-	}, {
-		.compatible = "arm,vexpress-shutdown",
-		.data = (void *)FUNC_SHUTDOWN
-	}, {
-		.compatible = "arm,vexpress-reboot",
-		.data = (void *)FUNC_REBOOT
-	},
-	{}
-};
-
-static int vexpress_reset_probe(struct platform_device *pdev)
-{
-	enum vexpress_reset_func func;
-	const struct of_device_id *match =
-			of_match_device(vexpress_reset_of_match, &pdev->dev);
-
-	if (match)
-		func = (enum vexpress_reset_func)match->data;
-	else
-		func = pdev->id_entry->driver_data;
-
-	switch (func) {
-	case FUNC_SHUTDOWN:
-		vexpress_power_off_device = &pdev->dev;
-		break;
-	case FUNC_RESET:
-		if (!vexpress_restart_device)
-			vexpress_restart_device = &pdev->dev;
-		device_create_file(&pdev->dev, &dev_attr_active);
-		break;
-	case FUNC_REBOOT:
-		vexpress_restart_device = &pdev->dev;
-		device_create_file(&pdev->dev, &dev_attr_active);
-		break;
-	};
-
-	return 0;
-}
-
-static const struct platform_device_id vexpress_reset_id_table[] = {
-	{ .name = "vexpress-reset", .driver_data = FUNC_RESET, },
-	{ .name = "vexpress-shutdown", .driver_data = FUNC_SHUTDOWN, },
-	{ .name = "vexpress-reboot", .driver_data = FUNC_REBOOT, },
-	{}
-};
-
-static struct platform_driver vexpress_reset_driver = {
-	.probe = vexpress_reset_probe,
-	.driver = {
-		.name = "vexpress-reset",
-		.of_match_table = vexpress_reset_of_match,
-	},
-	.id_table = vexpress_reset_id_table,
-};
-
-static int __init vexpress_reset_init(void)
-{
-	return platform_driver_register(&vexpress_reset_driver);
-}
-device_initcall(vexpress_reset_init);