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. Thanks, Lukas
