diff options
| author | David Hendricks <dhendrix@chromium.org> | 2016-08-30 18:03:35 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2016-09-02 07:11:33 -0700 |
| commit | 74e60906c4c2d4c3520d3ea221c232b5f29b7e0d (patch) | |
| tree | c07e38972a89c21357e336397fd6bcef4ce9f6ef /common/extpower_gpio.c | |
| parent | 6910f907a6384cf94e58927fa1b1221ba84ebe1a (diff) | |
| download | chrome-ec-74e60906c4c2d4c3520d3ea221c232b5f29b7e0d.tar.gz | |
extpower: Allow board to override signal debounce time
This is for boards on which AC_PRESENT can be expected to fluctuate
over a much longer period than the code was originally designed for.
Specifically, USB-PD systems may require several hundred milliseconds
for the state machine to settle before making decisions based on
AC_PRESENT status, for example, changing LED state.
BUG=chrome-os-partner:56471
BRANCH=none
TEST=Tested on Reef with follow-up patch
Change-Id: I370048cb79d1593a14077563ec8db8e8282afb16
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/378755
Diffstat (limited to 'common/extpower_gpio.c')
| -rw-r--r-- | common/extpower_gpio.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/common/extpower_gpio.c b/common/extpower_gpio.c index 569d674157..c9e62b71e2 100644 --- a/common/extpower_gpio.c +++ b/common/extpower_gpio.c @@ -12,8 +12,6 @@ #include "host_command.h" #include "timer.h" -#define EXTPOWER_DEBOUNCE_US (30 * MSEC) - static int debounced_extpower_presence; int extpower_is_present(void) @@ -45,7 +43,8 @@ DECLARE_DEFERRED(extpower_deferred); void extpower_interrupt(enum gpio_signal signal) { /* Trigger deferred notification of external power change */ - hook_call_deferred(&extpower_deferred_data, EXTPOWER_DEBOUNCE_US); + hook_call_deferred(&extpower_deferred_data, + CONFIG_EXTPOWER_DEBOUNCE_MS * MSEC); } static void extpower_init(void) |