On Monday, June 30, 2014 09:29:54 AM Aaron Lu wrote:
> On 06/29/2014 04:42 PM, Martin Kepplinger wrote:
> > Am 2014-06-23 22:30, schrieb Martin Kepplinger:
> >> Fix backlight control for Acer TravelMate B113 Laptop by adding
> >> it to the video_dmi_table.
> >>
> >> A workaround before that was to use acpi_osi=Linux or
> >> acpi_backlight=vendor on boot but even then, only the function-
> >> keys worked.
> >>
> >> With this change there is no need for boot parameters and DE's
> >> controls work as well.
> >>
> >> Signed-off-by: Martin Kepplinger <martink@xxxxxxxxx>
> >> Tested-by: Martin Kepplinger <martink@xxxxxxxxx>
> >> ---
> >> drivers/acpi/video.c | 8 ++++++++
> >> 1 file changed, 8 insertions(+)
> >>
> >> diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
> >> index f8bc5a7..acb0670 100644
> >> --- a/drivers/acpi/video.c
> >> +++ b/drivers/acpi/video.c
> >> @@ -528,6 +528,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
> >> },
> >> },
> >> {
> >> + .callback = video_set_use_native_backlight,
> >> + .ident = "Acer TravelMate B113",
> >> + .matches = {
> >> + DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
> >> + DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate B113"),
> >> + },
> >> + },
> >> + {
> >> .callback = video_set_use_native_backlight,
> >> .ident = "HP ProBook 4340s",
> >> .matches = {
> >>
> >
> > are there objections or advice on this? this would be really good to
> > have, even if for 3.17.
>
> For v3.16, we already have this commit to make use_native_backlight
> equal to 1 by default:
>
> commit 751109aad5834375ca9ed0dcfcd85a00cbf872b5
> Author: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> Date: Thu Jun 5 22:47:35 2014 +0200
>
> ACPI / video: Change the default for video.use_native_backlight to 1
Nevertheless, we may need the blacklist entries in case we need to revert the
above commit and also in case we want them to be backported to -stable (or LTSI
etc.).
Rafael
--
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
