On Mon, Apr 22, 2013 at 08:39:14PM +0800, Chun-Yi Lee wrote: > From: Lee, Chun-Yi <jlee@xxxxxxxx> > > After Andrzej's testing, we found the acpi backlight methods broken on Acer > Aspire 5750G but the i915 backlight control works when we set to vendor mode. > And, we still want to keep the acpi/video driver for transfer acpi event to key > event but not unregister whole acpi/video driver. > > This patch introduced a new capability flag is ACER_CAP_KEEP_VIDEO_KEY, it > indicates the machine works fine with acpi/video driver for key event but want > to unregister the backlight interface of acpi/video. > > Reference: bko#35622 > https://bugzilla.kernel.org/show_bug.cgi?id=35622 > > Tested-by: Andrzej Krentosz <endrjux@xxxxxxxxx> > Cc: Carlos Corbacho <carlos@xxxxxxxxxxxxxxxxxxx> > Cc: Matthew Garrett <mjg@xxxxxxxxxx> > Cc: Dmitry Torokhov <dtor@xxxxxxx> > Cc: Corentin Chary <corentincj@xxxxxxxxxx> > Cc: Rafael J. Wysocki <rjw@xxxxxxx> > Cc: Aaron Lu <aaron.lu@xxxxxxxxx> > Cc: Thomas Renninger <trenn@xxxxxxx> > Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxx> > --- > drivers/platform/x86/acer-wmi.c | 20 ++++++++++++++++++++ > 1 files changed, 20 insertions(+), 0 deletions(-) > > diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c > index c9076bd..2a02409 100644 > --- a/drivers/platform/x86/acer-wmi.c > +++ b/drivers/platform/x86/acer-wmi.c > @@ -207,6 +207,7 @@ struct hotkey_function_type_aa { > #define ACER_CAP_BRIGHTNESS (1<<3) > #define ACER_CAP_THREEG (1<<4) > #define ACER_CAP_ACCEL (1<<5) > +#define ACER_CAP_KEEP_VIDEO_KEY (1<<6) > #define ACER_CAP_ANY (0xFFFFFFFF) > > /* > @@ -539,6 +540,15 @@ static int video_set_backlight_video_vendor(const struct dmi_system_id *d) > return 0; > } > > +static int video_set_backlight_video_vendor_keep_acpi_video( > + const struct dmi_system_id *d) > +{ > + video_set_backlight_video_vendor(d); > + interface->capability |= ACER_CAP_KEEP_VIDEO_KEY; > + pr_info("Keep acpi video driver for emit keycode against backlight change\n"); Huh? "Keeping acpi video driver active to emit backlight brightness change key events"? Thanks. -- Dmitry -- 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
