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drm/radeon: Set MASTER_UPDATE_MODE to 0 again

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With the previous change, it's safe to let page flips take effect
anytime during a vertical blank period.

This can avoid delaying a flip by a frame in some cases where we get to
radeon_flip_work_func -> adev->mode_info.funcs->page_flip during a
vertical blank period.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer
2016-08-04 12:39:40 +09:00
committed by Alex Deucher
parent b8fc75cfee
commit 5dd20bbae8
3 changed files with 6 additions and 8 deletions
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8
drivers/gpu/drm/radeon/atombios_crtc.c
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@@ -1433,8 +1433,8 @@ static int dce4_crtc_do_set_base(struct drm_crtc *crtc,
WREG32(EVERGREEN_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
(viewport_w << 16) | viewport_h);
/* set pageflip to happen only at start of vblank interval (front porch) */
WREG32(EVERGREEN_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 3);
/* set pageflip to happen anywhere in vblank interval */
WREG32(EVERGREEN_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 0);
if (!atomic && fb && fb != crtc->primary->fb) {
radeon_fb = to_radeon_framebuffer(fb);
@@ -1632,8 +1632,8 @@ static int avivo_crtc_do_set_base(struct drm_crtc *crtc,
WREG32(AVIVO_D1MODE_VIEWPORT_SIZE + radeon_crtc->crtc_offset,
(viewport_w << 16) | viewport_h);
/* set pageflip to happen only at start of vblank interval (front porch) */
WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 3);
/* set pageflip to happen anywhere in vblank interval */
WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + radeon_crtc->crtc_offset, 0);
if (!atomic && fb && fb != crtc->primary->fb) {
radeon_fb = to_radeon_framebuffer(fb);