drm/amdgpu: register a vga_switcheroo client for MacBooks with apple-gmux

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Commit 3840c5bcc2 ("drm/amdgpu: disentangle runtime pm and
vga_switcheroo") made amdgpu only register a vga_switcheroo client for
GPU's with PX, however AMD GPUs in dual gpu Apple Macbooks do need to
register, but don't have PX. Instead of AMD's PX, they use apple-gmux.

Use apple_gmux_detect() to identify these gpus, and
pci_is_thunderbolt_attached() to ensure eGPUs connected to Dual GPU
Macbooks don't register with vga_switcheroo.

Fixes: 3840c5bcc2 ("drm/amdgpu: disentangle runtime pm and vga_switcheroo")
Link: https://lore.kernel.org/amd-gfx/20230210044826.9834-10-orlandoch.dev@gmail.com/
Signed-off-by: Orlando Chamberlain <orlandoch.dev@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Orlando Chamberlain 2023-03-03 22:34:25 +11:00 • committed by Alex Deucher

parent 1fd0da91a8

commit d37a3929ca

1 changed files with 16 additions and 5 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

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