diff options
| author | Simon Glass <sjg@chromium.org> | 2012-08-22 03:15:52 +0100 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-08-27 12:16:10 -0700 |
| commit | 130531ab8ca916de4934315264353bfbfcda7871 (patch) | |
| tree | 16cc033d0e40d7085f65119b6a0df1e81e55e8d3 /include/gpio.h | |
| parent | ecd4e1b5d6cc0530b3416ce626b4665ec298e4e4 (diff) | |
| download | chrome-ec-130531ab8ca916de4934315264353bfbfcda7871.tar.gz | |
Allow GPIOs to be set up later
At present GPIOs must be staticly defined in a table. This is efficient
but inflexible, and requires error-prone and correponding #ifdefs both
in the board's gpio.h and gpio.c files.
Create a GPIO_UNSET option for GPIOs. This allows them to be assigned
an enum value, but have the actual use under program control.
BUG=chrome-os-partner:13064
BRANCH=snow,link
TEST=manual
build and boot on snow with later changes. See the AC power GPIO does
not change when un/plugging power.
Change-Id: Iab58275923d7d6cfce62c890b5db9b6758279a4c
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/31302
Reviewed-by: David Hendricks <dhendrix@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 e03acfb0c9..0007e07cfa 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -25,7 +25,7 @@ #define GPIO_INT_BOTH 0x0040 /* Interrupt on both edges */ #define GPIO_INT_LOW 0x0080 /* Interrupt on low level */ #define GPIO_INT_HIGH 0x0100 /* Interrupt on high level */ - +#define GPIO_DEFAULT 0x0200 /* Don't set up on boot */ /* Common flag combinations */ #define GPIO_OUT_LOW GPIO_OUTPUT |