From d37a3929ca0363ed1dce02b2772cd5bc547ca66d Mon Sep 17 00:00:00 2001 From: Orlando Chamberlain Date: Fri, 3 Mar 2023 22:34:25 +1100 Subject: [PATCH] drm/amdgpu: register a vga_switcheroo client for MacBooks with apple-gmux Commit 3840c5bcc245 ("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: 3840c5bcc245 ("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 Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index c4a4e2fe6681..9bca7e5547c5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include @@ -3930,12 +3931,15 @@ fence_driver_init: if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) vga_client_register(adev->pdev, amdgpu_device_vga_set_decode); - if (amdgpu_device_supports_px(ddev)) { - px = true; + px = amdgpu_device_supports_px(ddev); + + if (px || (!pci_is_thunderbolt_attached(adev->pdev) && + apple_gmux_detect(NULL, NULL))) vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, px); + + if (px) vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain); - } if (adev->gmc.xgmi.pending_reset) queue_delayed_work(system_wq, &mgpu_info.delayed_reset_work, @@ -4039,6 +4043,7 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev) void amdgpu_device_fini_sw(struct amdgpu_device *adev) { int idx; + bool px; amdgpu_fence_driver_sw_fini(adev); amdgpu_device_ip_fini(adev); @@ -4057,10 +4062,16 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev) kfree(adev->bios); adev->bios = NULL; - if (amdgpu_device_supports_px(adev_to_drm(adev))) { + + px = amdgpu_device_supports_px(adev_to_drm(adev)); + + if (px || (!pci_is_thunderbolt_attached(adev->pdev) && + apple_gmux_detect(NULL, NULL))) vga_switcheroo_unregister_client(adev->pdev); + + if (px) vga_switcheroo_fini_domain_pm_ops(adev->dev); - } + if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) vga_client_unregister(adev->pdev); -- 2.20.1