drm/amdgpu/virtual_dce: Virtual display doesn't support disable vblank immediately

For virtual display, it uses software timer to emulate the vsync interrupt,
it doesn't have high precision, so doesn't support disable vblank immediately.

BUG: SWDEV-129274

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index 4bdd851f56d081310614f27dce5093255ecf7dfd..538e5f27d1205809ec293dee0aae8da5b5711e8b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -221,8 +221,9 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
 
        spin_lock_init(&adev->irq.lock);
 
-       /* Disable vblank irqs aggressively for power-saving */
-       adev->ddev->vblank_disable_immediate = true;
+       if (!adev->enable_virtual_display)
+               /* Disable vblank irqs aggressively for power-saving */
+               adev->ddev->vblank_disable_immediate = true;
 
        r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
        if (r) {