diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2014-12-04 14:37:16 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-12-10 22:14:07 +0000 |
| commit | 1b1c3089afada7b53e7836ce2b98c157f36a44a8 (patch) | |
| tree | b741f174426d280347de3d0c87032ec241095c97 /include/gpio.h | |
| parent | 8decf722c52cd03681d4c6a900722a11388b59f3 (diff) | |
| download | chrome-ec-1b1c3089afada7b53e7836ce2b98c157f36a44a8.tar.gz | |
g: implement GPIOs
Add a driver for the GPIO controller.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=chrome-os-partner:33816
TEST=press the push buttons on the board and see the console text
message and the LEDs lighting up.
Change-Id: Idb408fe1c341beb8a97f2047ba6740e0d40cedf5
Reviewed-on: https://chromium-review.googlesource.com/233307
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include/gpio.h')
| -rw-r--r-- | include/gpio.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/gpio.h b/include/gpio.h index 3f76d43bfd..7d460a27f5 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -69,6 +69,18 @@ struct gpio_info { /* Signal information from board.c. Must match order from enum gpio_signal. */ extern const struct gpio_info gpio_list[]; +/* + * Define the storage size for the pin muxing information. + * + * int8_t is more optimal for storage size and alignment, + * but some chips require to store more information. + */ +#ifdef CONFIG_GPIO_LARGE_ALT_INFO +typedef uint32_t alt_func_t; +#else +typedef int8_t alt_func_t; +#endif + /* GPIO alternate function structure, for use by board.c */ struct gpio_alt_func { /* Port base address */ @@ -78,7 +90,7 @@ struct gpio_alt_func { uint32_t mask; /* Alternate function number */ - int8_t func; + alt_func_t func; /* Module ID (as uint8_t, since enum would be 32-bit) */ uint8_t module_id; |