On Wednesday 19 October 2016 15:33:53 Hans de Goede wrote: > Checking other sysfs drivers, there is a standard way to notify userspace > about changes to a sysfs attributes underlying value. This patch-set adds > a led_notify_brightness_change led-core function using this standard > mechanism and makes the dell-wmi driver call led_notify_brightness_change > on the kbd_backlight led_classdev when the firmware has changed the > brightness. Together with some userspace changes / fixes this leads to > a much nicer / more integrated experience wrt kbd backlight control. Thank you for bringing this back! I had similar solution in my mind, but I have not had time to implement it yet. It is great to see support for this. > Currently this patch-set introduces only 1 user (dell-wmi) of the new > led_notify_brightness_change function, but I plan to also fix the same > issue on thinkpads (soon), Look at thinkpad acpi mailing list discussion. There is acpi information how to listen for firmware event when keyboard backlight on thinkpad was changed. Maybe it could help you... -- Pali Rohár pali.rohar@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
