On 12/04/2016 07:02 AM, Yang Ling wrote:
Add watchdog timer specific driver for Loongson1 SoC. Signed-off-by: Yang Ling <gnaygnil@xxxxxxxxx> --- V2.3: Set DEFAULT_HEARTBEAT value to ls1x_wdt->timeout. V2.2: Remove the wide character. Check the return value for clk_get_rate(). V2.1 from Kelvin Cheung: Use max_hw_heartbeat_ms instead of max_timeout. V2.0: Increase the value of the default heartbeat. Modify the setup process for register. Order include files and Makefile alphabetically. V1.1: Add a little debugging information. --- drivers/watchdog/Kconfig | 7 ++ drivers/watchdog/Makefile | 1 + drivers/watchdog/loongson1_wdt.c | 170 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 178 insertions(+) create mode 100644 drivers/watchdog/loongson1_wdt.c diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index fdd3228..c5b9c6e 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1513,6 +1513,13 @@ config LANTIQ_WDT help Hardware driver for the Lantiq SoC Watchdog Timer. +config LOONGSON1_WDT + tristate "Loongson1 SoC hardware watchdog" + depends on MACH_LOONGSON32 + select WATCHDOG_CORE + help + Hardware driver for the Loongson1 SoC Watchdog Timer. + config RALINK_WDT tristate "Ralink SoC watchdog" select WATCHDOG_CORE diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index caa9f4a..0c3d35e 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -163,6 +163,7 @@ obj-$(CONFIG_TXX9_WDT) += txx9wdt.o obj-$(CONFIG_OCTEON_WDT) += octeon-wdt.o octeon-wdt-y := octeon-wdt-main.o octeon-wdt-nmi.o obj-$(CONFIG_LANTIQ_WDT) += lantiq_wdt.o +obj-$(CONFIG_LOONGSON1_WDT) += loongson1_wdt.o obj-$(CONFIG_RALINK_WDT) += rt2880_wdt.o obj-$(CONFIG_IMGPDC_WDT) += imgpdc_wdt.o obj-$(CONFIG_MT7621_WDT) += mt7621_wdt.o diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c new file mode 100644 index 0000000..c43ad38 --- /dev/null +++ b/drivers/watchdog/loongson1_wdt.c @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2016 Yang Ling <gnaygnil@xxxxxxxxx> + * + * 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. + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/watchdog.h> +#include <loongson1.h> + +#define DEFAULT_HEARTBEAT 30 + +static bool nowayout = WATCHDOG_NOWAYOUT; +module_param(nowayout, bool, 0444); + +static unsigned int heartbeat = DEFAULT_HEARTBEAT;
heartbeat should be 0. Guenter
