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authorJim Qu <Jim.Qu@amd.com>2018-07-17 16:20:50 +0800
committerTakashi Iwai <tiwai@suse.de>2018-07-17 11:12:00 +0200
commit4aaf448fa9754e2d5ee188d32327b24ffc15ca4d (patch)
tree1f625d14bdfaf5a48c461c6ce357181dc5d809a4 /COPYING
parent9d3cce1e8b8561fed5f383d22a4d6949db4eadbe (diff)
downloadlinux-4aaf448fa9754e2d5ee188d32327b24ffc15ca4d.tar.gz
vga_switcheroo: set audio client id according to bound GPU id
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@amd.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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