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| author | Craig Hesling <hesling@chromium.org> | 2019-10-30 10:45:46 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-11-08 22:58:53 +0000 |
| commit | fe21ab18622825f2a402b970cfec50e429cc14f5 (patch) | |
| tree | e606642079549f53df12ab7ddea63c04ef5d17a2 /include/gpio_list.h | |
| parent | 551c8736317a3bd6eb9f8c95540af67e60969716 (diff) | |
| download | chrome-ec-fe21ab18622825f2a402b970cfec50e429cc14f5.tar.gz | |
gpio: Add UNUSED declaration for gpio.inc
This new gpio.inc macro is intended to mark pins that are unused
on a given board. This allows the chip implementation to configure them
for the lowest power configuration.
This CL brings immediate functional change.
A reference implementation is provided for the STM32F4 chip family
in crrev.com/c/1894242.
BRANCH=nocturne,hatch
BUG=b:130561737
TEST=make buildall -j
Change-Id: I0bc0a63401ae8f3bba4108b5b9f9ced26785f2bc
Signed-off-by: Craig Hesling <hesling@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1898796
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'include/gpio_list.h')
| -rw-r--r-- | include/gpio_list.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/gpio_list.h b/include/gpio_list.h index 180841bb9b..37d49a6f97 100644 --- a/include/gpio_list.h +++ b/include/gpio_list.h @@ -23,6 +23,14 @@ const struct gpio_info gpio_list[] = { BUILD_ASSERT(ARRAY_SIZE(gpio_list) == GPIO_COUNT); +#define UNUSED(pin) {GPIO_##pin}, +/* Unconnected pin list. */ +const struct unused_pin_info unused_pin_list[] = { + #include "gpio.wrap" +}; + +const int unused_pin_count = ARRAY_SIZE(unused_pin_list); + /* GPIO Interrupt Handlers */ #define GPIO_INT(name, pin, flags, signal) signal, void (* const gpio_irq_handlers[])(enum gpio_signal signal) = { @@ -45,7 +53,9 @@ const int gpio_ih_count = ARRAY_SIZE(gpio_irq_handlers); */ #define GPIO(name, pin, flags) pin #define GPIO_INT(name, pin, flags, signal) pin +#define UNUSED(pin) pin /* + * Check at build time that pin/ports are only defined once. * The compiler will complain if we use the same name twice. The linker ignores * anything that gets by. */ |