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authorIvan Khoronzhuk <ivan.khoronzhuk@ti.com>2013-12-05 13:26:24 +0200
committerWim Van Sebroeck <wim@iguana.be>2014-01-28 21:19:52 +0100
commitf48f3ceabf2ce4fb5b8aa0672166e1e9001946b9 (patch)
tree0efd1d7b9622de541506c31697b7104a25298917 /drivers/watchdog/Kconfig
parent6e2ac20e9c47cf26a1dd5a0f05b93ef0afd3c1c5 (diff)
downloadlinux-f48f3ceabf2ce4fb5b8aa0672166e1e9001946b9.tar.bz2
watchdog: davinci: change driver to use WDT core
To reduce code duplicate and increase code readability use WDT core code to handle WDT interface. Remove io_lock as the WDT core uses mutex to lock each wdt device. Remove wdt_state as the WDT core tracks state with its own variable. The watchdog_init_timeout() can read timeout value from timeout-sec property if the passed value is out of bounds. The heartbeat is initialized in next way. If heartbeat is not set thought module parameter, try to read it's value from WDT node timeout-sec property. If node has no one, use default value. The heartbeat is hold in wdd->timeout by WDT core, so use it in order to set timeout period. Davinci WDT can't be stopped and once it's expired - it can be rearmed only after hardware reset, that's why nowayout feature is enforced. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/Kconfig')
-rw-r--r--drivers/watchdog/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 1491f0f4d41d..b69a0f763a6d 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -271,6 +271,7 @@ config IOP_WATCHDOG
config DAVINCI_WATCHDOG
tristate "DaVinci watchdog"
depends on ARCH_DAVINCI
+ select WATCHDOG_CORE
help
Say Y here if to include support for the watchdog timer
in the DaVinci DM644x/DM646x processors.