On Tue, Sep 24, 2013 at 05:47:28PM +0800, Aaron Lu wrote: > v3: > 1 Add a new patch 4/4 to fix some problems in thinkpad-acpi module; > 2 Remove unnecessary function acpi_video_unregister introduced in > patch 2/3 as pointed out by Jani Nikula. > > v2: > v1 has the subject of "Rework ACPI video driver" and is posted here: > http://lkml.org/lkml/2013/9/9/74 > Since the objective is really to fix Win8 backlight issues, I changed > the subject in this version, sorry about that. > > This patchset has three patches, the first introduced a new API named > backlight_device_registered in backlight layer that can be used for > backlight interface provider module to check if a specific type backlight > interface has been registered, see changelog for patch 1/3 for details. > Then patch 2/3 does the cleanup to sepeate the backlight control and > event delivery functionality in the ACPI video module and patch 3/3 > solves some Win8 backlight control problems by avoiding register ACPI > video's backlight interface if: > 1 Kernel cmdline option acpi_backlight=video is not given; > 2 This is a Win8 system; > 3 Native backlight control interface exists. > > Technically, patch 2/3 is not required to fix the issue here. So if you > think it is not necessary, I can remove it from the series. > > Aaron Lu (4): > backlight: introduce backlight_device_registered > ACPI / video: seperate backlight control and event interface > ACPI / video: Do not register backlight if win8 and native interface > exists > thinkpad-acpi: fix handle locate for video and query of _BCL > > drivers/acpi/internal.h | 5 +- > drivers/acpi/video.c | 442 ++++++++++++++++++++--------------- > drivers/acpi/video_detect.c | 14 +- > drivers/platform/x86/thinkpad_acpi.c | 31 ++- > drivers/video/backlight/backlight.c | 31 +++ > include/acpi/video.h | 2 + > include/linux/backlight.h | 4 + > 7 files changed, 324 insertions(+), 205 deletions(-) Just tested this series on my HP revolve 810 and this fixes the backlight issue it had :) Feel free to add my, Tested-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
