On 2018年07月17日 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@xxxxxxx>
Reviewed-by: Lukas Wunner <lukas@xxxxxxxxx>
@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
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