MIPS: Loongson1: Add watchdog support for Loongson1 board

The patch adds watchdog support for Loongson1 board.

Signed-off-by: Yang Ling <gnaygnil@gmail.com>
Cc: keguang.zhang@gmail.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14644/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

6 files changed, 37 insertions, 10 deletions

diff --git a/arch/mips/configs/loongson1b_defconfig b/arch/mips/configs/loongson1b_defconfig
index c442f27685f4..914c867887bd 100644
--- a/arch/mips/configs/loongson1b_defconfig
+++ b/arch/mips/configs/loongson1b_defconfig
@@ -74,6 +74,10 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_LOONGSON1=y
 # CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_WATCHDOG_NOWAYOUT=y
+CONFIG_WATCHDOG_SYSFS=y
+CONFIG_LOONGSON1_WDT=y
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_HID_GENERIC=m
 CONFIG_USB_HID=m
diff --git a/arch/mips/configs/loongson1c_defconfig b/arch/mips/configs/loongson1c_defconfig
index 2304d4165773..68e42eff908e 100644
--- a/arch/mips/configs/loongson1c_defconfig
+++ b/arch/mips/configs/loongson1c_defconfig
@@ -75,6 +75,10 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_LOONGSON1=y
 # CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_WATCHDOG_NOWAYOUT=y
+CONFIG_WATCHDOG_SYSFS=y
+CONFIG_LOONGSON1_WDT=y
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_HID_GENERIC=m
 CONFIG_USB_HID=m
diff --git a/arch/mips/include/asm/mach-loongson32/platform.h b/arch/mips/include/asm/mach-loongson32/platform.h
index 7adc31364939..8f8fa43ba095 100644
--- a/arch/mips/include/asm/mach-loongson32/platform.h
+++ b/arch/mips/include/asm/mach-loongson32/platform.h
@@ -1,9 +1,9 @@
 /*
  * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
  *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
  */
 
@@ -25,11 +25,12 @@ extern struct platform_device ls1x_gpio0_pdev;
 extern struct platform_device ls1x_gpio1_pdev;
 extern struct platform_device ls1x_nand_pdev;
 extern struct platform_device ls1x_rtc_pdev;
+extern struct platform_device ls1x_wdt_pdev;
 
 void __init ls1x_clk_init(void);
 void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata);
 void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata);
-void __init ls1x_serial_set_uartclk(struct platform_device *pdev);
 void __init ls1x_rtc_set_extclk(struct platform_device *pdev);
+void __init ls1x_serial_set_uartclk(struct platform_device *pdev);
 
 #endif /* __ASM_MACH_LOONGSON32_PLATFORM_H */
diff --git a/arch/mips/loongson32/common/platform.c b/arch/mips/loongson32/common/platform.c
index 18c2959afe07..a3dabe940b03 100644
--- a/arch/mips/loongson32/common/platform.c
+++ b/arch/mips/loongson32/common/platform.c
@@ -356,3 +356,19 @@ struct platform_device ls1x_rtc_pdev = {
 	.name		= "ls1x-rtc",
 	.id		= -1,
 };
+
+/* Watchdog */
+static struct resource ls1x_wdt_resources[] = {
+	{
+		.start	= LS1X_WDT_BASE,
+		.end	= LS1X_WDT_BASE + SZ_16 - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device ls1x_wdt_pdev = {
+	.name		= "ls1x-wdt",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(ls1x_wdt_resources),
+	.resource	= ls1x_wdt_resources,
+};
diff --git a/arch/mips/loongson32/ls1b/board.c b/arch/mips/loongson32/ls1b/board.c
index 38a1d404be1b..01aceaace314 100644
--- a/arch/mips/loongson32/ls1b/board.c
+++ b/arch/mips/loongson32/ls1b/board.c
@@ -1,9 +1,9 @@
 /*
  * Copyright (c) 2011-2016 Zhang, Keguang <keguang.zhang@gmail.com>
  *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
  */
 
@@ -72,6 +72,7 @@ static struct platform_device *ls1b_platform_devices[] __initdata = {
 	&ls1x_gpio1_pdev,
 	&ls1x_nand_pdev,
 	&ls1x_rtc_pdev,
+	&ls1x_wdt_pdev,
 };
 
 static int __init ls1b_platform_init(void)
diff --git a/arch/mips/loongson32/ls1c/board.c b/arch/mips/loongson32/ls1c/board.c
index a96bed5e3ea6..eb2d913c694f 100644
--- a/arch/mips/loongson32/ls1c/board.c
+++ b/arch/mips/loongson32/ls1c/board.c
@@ -1,9 +1,9 @@
 /*
  * Copyright (c) 2016 Yang Ling <gnaygnil@gmail.com>
  *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.
  */
 
@@ -13,6 +13,7 @@ static struct platform_device *ls1c_platform_devices[] __initdata = {
 	&ls1x_uart_pdev,
 	&ls1x_eth0_pdev,
 	&ls1x_rtc_pdev,
+	&ls1x_wdt_pdev,
 };
 
 static int __init ls1c_platform_init(void)