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| author | Randall Spangler <rspangler@chromium.org> | 2013-04-11 13:02:27 -0700 |
|---|---|---|
| committer | ChromeBot <chrome-bot@google.com> | 2013-04-11 15:38:09 -0700 |
| commit | 79c6132a6e6d9b5d00a33d7f73795cd88bd97017 (patch) | |
| tree | 30943690ad8c61650359017b153cce026dc4a926 /include/gpio.h | |
| parent | b9d0d9c60b2b826f37192f6ffb96b23f1c18d6de (diff) | |
| download | chrome-ec-79c6132a6e6d9b5d00a33d7f73795cd88bd97017.tar.gz | |
Allow GPIO alternate function 0
gpio_set_alternate_function() used 0 to mean "normal GPIO function".
But on chips like STM32L, alternate function 0 is actually a function
on some pins. So change "normal GPIO function" to -1.
Also add support for this on STM32L.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=build and boot link and daisy
Change-Id: I9cdd9ad91a315b616e373a0dc9a50545cf9d20fa
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47903
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Diffstat (limited to 'include/gpio.h')
| -rw-r--r-- | include/gpio.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/gpio.h b/include/gpio.h index 9dd97cb3aa..fca33231e0 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -133,7 +133,7 @@ int gpio_enable_interrupt(enum gpio_signal signal); * * @param port GPIO port to set (LM4_GPIO_*) * @param mask Bitmask of pins on that port to affect - * @param func Alternate function; if 0, configures the specified + * @param func Alternate function; if <0, configures the specified * GPIOs for normal GPIO operation. */ void gpio_set_alternate_function(int port, int mask, int func); |