On 18/08/17 02:48 PM, Emily Deng wrote:
> 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)
>
Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
