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 at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
index dc74c0b..914c5bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
@@ -237,9 +237,11 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
}
if (!amdgpu_device_has_dc_support(adev)) {
- /* Disable vblank irqs aggressively for power-saving */
- /* XXX: can this be enabled for DC? */
- adev->ddev->vblank_disable_immediate = true;
+ if (!adev->enable_virtual_display) {
+ /* Disable vblank irqs aggressively for power-saving */
+ /* XXX: can this be enabled for DC? */
+ adev->ddev->vblank_disable_immediate = true;
+ }
r = drm_vblank_init(adev->ddev, adev->mode_info.num_crtc);
if (r)
--
1.9.1
