On 2018å¹´07æ??17æ?¥ 16:52, Takashi Iwai wrote: > On Tue, 17 Jul 2018 10:38:58 +0200, > Lukas Wunner wrote: >> On Tue, Jul 17, 2018 at 04:20:50PM +0800, Jim Qu wrote: >>> On modern laptop, there are more and more platforms >>> have two GPUs, and each of them maybe have audio codec >>> for HDMP/DP output. For some dGPU which is no output, >>> audio codec usually is disabled. >>> >>> In currect HDA audio driver, it will set all codec as >>> VGA_SWITCHEROO_DIS, the audio which is binded to UMA >>> will be suspended if user use debugfs to contorl power >>> >>> In HDA driver side, it is difficult to know which GPU >>> the audio has binded to. So set the bound gpu pci dev >>> to vga_switcheroo. >>> >>> if the audio client is not the third registration, audio >>> id will set in vga_switcheroo enable function. if the >>> audio client is the last registration when vga_switcheroo >>> _ready() get true, we should get audio client id from bound >>> GPU directly. >>> >>> Signed-off-by: Jim Qu <Jim.Qu at amd.com> >> Reviewed-by: Lukas Wunner <lukas at wunner.de> >> >> @Takashi, any preference which tree to merge this through? >> sound or drm-misc, either way would seem fine to me. I think >> there's going to be one final drm-misc pull sent to Dave this >> week, after that it's 4.20. > Since it's basically an audio problem and I'd love to merge it for > 4.19, I'd prefer taking through sound git tree, unless anyone has > objection. Thanks to Takashi and Lukas great help. Please kindly help merge the patch into suitable branch. Thanks JimQu > thanks, > > Takashi
