All supported SoCs have a built-in hardware watchdog driver. This patch
registers a platform_device for that to make it usable.
Signed-off-by: Gabor Juhos <juhosg@xxxxxxxxxxx>
Signed-off-by: Imre Kaloz <kaloz@xxxxxxxxxxx>
---
arch/mips/ath79/Kconfig | 3 +++
arch/mips/ath79/Makefile | 1 +
arch/mips/ath79/dev-wdt.c | 30 ++++++++++++++++++++++++++++++
arch/mips/ath79/dev-wdt.h | 17 +++++++++++++++++
arch/mips/ath79/setup.c | 2 ++
5 files changed, 53 insertions(+), 0 deletions(-)
create mode 100644 arch/mips/ath79/dev-wdt.c
create mode 100644 arch/mips/ath79/dev-wdt.h
diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index 2bd35ef..79bb528 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -28,4 +28,7 @@ config ATH79_DEV_LEDS_GPIO
config ATH79_DEV_UART
def_bool y
+config ATH79_DEV_WDT
+ def_bool y
+
endif
diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
index a231967..1b01868 100644
--- a/arch/mips/ath79/Makefile
+++ b/arch/mips/ath79/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_ATH79_DEV_LEDS_GPIO) += dev-leds-gpio.o
obj-$(CONFIG_ATH79_DEV_UART) += dev-uart.o
+obj-$(CONFIG_ATH79_DEV_WDT) += dev-wdt.o
#
# Machines
diff --git a/arch/mips/ath79/dev-wdt.c b/arch/mips/ath79/dev-wdt.c
new file mode 100644
index 0000000..ba6b8bd
--- /dev/null
+++ b/arch/mips/ath79/dev-wdt.c
@@ -0,0 +1,30 @@
+/*
+ * Atheros AR71XX/AR724X/AR913X watchdog device
+ *
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@xxxxxxxxxxx>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@xxxxxxxxxxx>
+ *
+ * Parts of this file are based on Atheros' 2.6.15 BSP
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include "common.h"
+#include "dev-wdt.h"
+
+static struct platform_device ath79_wdt_device = {
+ .name = "ath79-wdt",
+ .id = -1,
+};
+
+void __init ath79_register_wdt(void)
+{
+ platform_device_register(&ath79_wdt_device);
+}
diff --git a/arch/mips/ath79/dev-wdt.h b/arch/mips/ath79/dev-wdt.h
new file mode 100644
index 0000000..2546415
--- /dev/null
+++ b/arch/mips/ath79/dev-wdt.h
@@ -0,0 +1,17 @@
+/*
+ * Atheros AR71XX/AR724X/AR913X watchdog device
+ *
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@xxxxxxxxxxx>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@xxxxxxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef _ATH_DEV_WDT_H
+#define _ATH_DEV_WDT_H
+
+void ath79_register_wdt(void) __init;
+
+#endif
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index b36f9f2..693a9e6 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -24,6 +24,7 @@
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-uart.h"
+#include "dev-wdt.h"
#include "machtypes.h"
#define ATH79_SYS_TYPE_LEN 64
@@ -259,6 +260,7 @@ static int __init ath79_setup(void)
{
ath79_gpio_init();
ath79_register_uart();
+ ath79_register_wdt();
mips_machine_setup();
--
1.7.2.1
