diff options
| author | Daniel Campello <campello@chromium.org> | 2019-11-06 09:33:19 -0700 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2019-11-19 18:12:19 +0100 |
| commit | 119a3cb6d687259f2be333351c1c5d634204e68b (patch) | |
| tree | 89b13f1f278e731f16dd953e406ce0796aa00fe2 /include/linux/platform_data/wilco-ec.h | |
| parent | 3c4d77b68928df6c2bf07f4c3ba8e5d5e490bf4e (diff) | |
platform/chrome: wilco_ec: Add keyboard backlight LED support
The EC is in charge of controlling the keyboard backlight on
the Wilco platform. We expose a standard LED class device
named platform::kbd_backlight.
Since the EC will never change the backlight level of its own accord,
we don't need to implement a brightness_get() method.
Signed-off-by: Nick Crews <ncrews@chromium.org>
Signed-off-by: Daniel Campello <campello@chromium.org>
Reviewed-by: Daniel Campello <campello@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'include/linux/platform_data/wilco-ec.h')
| -rw-r--r-- | include/linux/platform_data/wilco-ec.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/platform_data/wilco-ec.h b/include/linux/platform_data/wilco-ec.h index 0d104e780632..afede15a95bf 100644 --- a/include/linux/platform_data/wilco-ec.h +++ b/include/linux/platform_data/wilco-ec.h @@ -122,6 +122,19 @@ struct wilco_ec_message { */ int wilco_ec_mailbox(struct wilco_ec_device *ec, struct wilco_ec_message *msg); +/** + * wilco_keyboard_leds_init() - Set up the keyboard backlight LEDs. + * @ec: EC device to query. + * + * After this call, the keyboard backlight will be exposed through a an LED + * device at /sys/class/leds. + * + * This may sleep because it uses wilco_ec_mailbox(). + * + * Return: 0 on success, negative error code on failure. + */ +int wilco_keyboard_leds_init(struct wilco_ec_device *ec); + /* * A Property is typically a data item that is stored to NVRAM * by the EC. Each of these data items has an index associated |