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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.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.h')
| -rw-r--r-- | include/gpio.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/gpio.h b/include/gpio.h index 3b1763ae9d..61329ad758 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -99,6 +99,19 @@ struct gpio_info { /* Signal information from board.c. Must match order from enum gpio_signal. */ extern const struct gpio_info gpio_list[]; +/* Unused pin definition structure. */ +struct unused_pin_info { + /* Port base address */ + uint32_t port; + + /* Bitmask on that port (1 << N) */ + uint32_t mask; +}; + +/* Unused pin information. */ +extern const struct unused_pin_info unused_pin_list[]; +extern const int unused_pin_count; + /* Interrupt handler table for those GPIOs which have IRQ handlers. * * If the signal's interrupt is enabled, this will be called in the |