On Thu, Jul 26, 2012 at 3:33 PM, Luca Tettamanti <kronos.it@xxxxxxxxx> wrote: > On Thu, Jul 26, 2012 at 11:35:25AM -0400, Alex Deucher wrote: >> On Thu, Jul 26, 2012 at 8:58 AM, Luca Tettamanti <kronos.it@xxxxxxxxx> wrote: >> > The other missing bit is how to actually change the brightness... Alex, >> > do you know what registers to poke? >> >> You need to check if the GPU controls the backlight or the system >> does. I think the attached patches should point you in the right >> direction. > > Yep :) > > 0050: ATOM_FIRMWARE_CAPABILITY_ACCESS usFirmwareCapability : > 0050: (union) ATOM_FIRMWARE_CAPABILITY sbfAccess : > USHORT GPUControlsBL:1 = 0x0001 (1) > > The panel is using the INTERNAL_UNIPHY encoder, and I see the > UNIPHYTransmitterControl command table. > > Interaction with video.ko is still a bit messy... > > Do you already have code for handling the notifications? I'll work on it > in the weekend otherwise ;) I don't have patches for that. Please feel free to work on it :) Thanks, Alex -- 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
