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| H A D | mtk_wdt.c | diff 1bbce7792bd19b95e44fd37db88b98091191e199 Sun Apr 25 03:52:06 CEST 2021 Wang Qing <wangqing@vivo.com> watchdog: mtk: support pre-timeout when the bark irq is available
Use the bark interrupt as the pretimeout notifier if available.
When the watchdog timer expires in dual mode, an interrupt will be
triggered first, then the timing restarts. The reset signal will be
initiated when the timer expires again.
The pretimeout notification shall occur at timeout-sec/2.
V2:
- panic() by default if WATCHDOG_PRETIMEOUT_GOV is not enabled.
V3:
- Modify the pretimeout behavior, manually reset after the pretimeout
- is processed and wait until timeout.
V4:
- Remove pretimeout related processing.
- Add dual mode control separately.
V5:
- Fix some formatting and printing problems.
V6:
- Realize pretimeout processing through dualmode.
V7:
- Add set_pretimeout().
V8/V9:
- Fix some formatting problems.
Signed-off-by: Wang Qing <wangqing@vivo.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1619315527-8171-2-git-send-email-wangqing@vivo.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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