On Tuesday 12 May 2015, fu.wei@linaro.org wrote:
From: Fu Wei fu.wei@linaro.org
(1)Use linux kernel watchdog framework (2)Work with FDT on ARM64 (3)Use "pretimeout" in watchdog framework. (4)In first timeout(WS0), do panic to save system context.Signed-off-by: Fu Wei fu.wei@linaro.org
drivers/watchdog/Kconfig | 10 + drivers/watchdog/Makefile | 1 + drivers/watchdog/sbsa_gwdt.c | 560 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 571 insertions(+) create mode 100644 drivers/watchdog/sbsa_gwdt.c
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index e5e7c55..46d6f46 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -152,6 +152,16 @@ config ARM_SP805_WATCHDOG ARM Primecell SP805 Watchdog timer. This will reboot your system when the timeout is reached. +config ARM_SBSA_WATCHDOG
- tristate "ARM SBSA Generic Watchdog"
- depends on ARM64 && ARM_AMBA
- select WATCHDOG_CORE
Ideally make it possible to build this on all architectures, so we get compile coverage on x86 builds.
You should also drop the ARM_AMBA dependency because this is regular platform_driver.
ARM_AMBA is only used for primecell devices, which this is not.
+#if IS_BUILTIN(CONFIG_OF) +static const struct of_device_id sbsa_gwdt_of_match[] = {
- { .compatible = "arm,sbsa-gwdt", },
- {},
+}; +MODULE_DEVICE_TABLE(of, sbsa_gwdt_of_match); +#endif
+static const struct dev_pm_ops sbsa_gwdt_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(sbsa_gwdt_suspend, sbsa_gwdt_resume)
+};
+static struct platform_driver sbsa_gwdt_driver = {
- .driver = {
.name = "sbsa-gwdt",.pm = &sbsa_gwdt_pm_ops,.of_match_table = sbsa_gwdt_of_match,- },
But fix the undefined reference here first: sbsa_gwdt_of_match is hidden behind CONFIG_OF, which is always set on ARM64. Just remove the #ifdef and it will build on other architectures as well.
arnd