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| author | Daisuke Nojiri <dnojiri@chromium.org> | 2022-04-07 23:06:11 +0000 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-04-13 18:45:14 +0000 |
| commit | f4134044af7328f25b56aec0e2e12018d37b4bb7 (patch) | |
| tree | dd45377376a05ba521ed7a6d66b707739423471e /common/rgb_keyboard.c | |
| parent | 985fe9a5e746db7fc2f2ad11e13ce3a77e138a4b (diff) | |
| download | chrome-ec-f4134044af7328f25b56aec0e2e12018d37b4bb7.tar.gz | |
RGBKBD: Support backlight control via ACPI
This patch allows x86 boards to control the keyboard backlight via ACPI.
BUG=b:228525798,b:226215987
BRANCH=None
TEST=Taniks. Run 'rgbk all 0xff 0xff 0xff' on EC then press Alt+F6/F7.
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Change-Id: Ic4b5599ac754c5c50e5f89b4dcb48c73677c57e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3582325
Reviewed-by: Parth Malkan <parthmalkan@google.com>
Diffstat (limited to 'common/rgb_keyboard.c')
| -rw-r--r-- | common/rgb_keyboard.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/common/rgb_keyboard.c b/common/rgb_keyboard.c index 0f66e6c242..c9987c5e5b 100644 --- a/common/rgb_keyboard.c +++ b/common/rgb_keyboard.c @@ -11,6 +11,7 @@ #include "gpio.h" #include "hooks.h" #include "host_command.h" +#include "keyboard_backlight.h" #include "registers.h" #include "rgb_keyboard.h" #include "task.h" @@ -335,6 +336,40 @@ static int rgbkbd_enable(int enable) return rv; } +static int rgbkbd_kblight_set(int percent) +{ + uint8_t gcc = DIV_ROUND_NEAREST(percent * RGBKBD_MAX_GCC_LEVEL, 100); + return rgbkbd_set_global_brightness(gcc); +} + +static int rgbkbd_kblight_get(void) +{ + uint8_t gcc; + + if (rgbkbd_get_global_brightness(&gcc)) + return 0; + + return DIV_ROUND_NEAREST(gcc * 100, RGBKBD_MAX_GCC_LEVEL); +} + +static int rgbkbd_get_enabled(void) +{ + return rgbkbds[0].state >= RGBKBD_STATE_ENABLED; +} + +const struct kblight_drv kblight_rgbkbd = { + .init = rgbkbd_init, + .set = rgbkbd_kblight_set, + .get = rgbkbd_kblight_get, + /* + * We need to let RGBKBD manage enable/disable the backlight to keep + * the LEDs under the control of RGBKBD. Registering NULL also avoids + * ASSERT(!in_interrupt_context()) failure in task.c called from + * rgbkbd_enable API. + */ + .enable = NULL, + .get_enabled = rgbkbd_get_enabled, +}; void rgbkbd_task(void *u) { |