drm/radeon/dpm: fix display_gap programming on rv7xx

Check the driver state rather than the register as the
crtc registers may not be enabled yet.

Should fix:
https://bugzilla.kernel.org/show_bug.cgi?id=60510
https://bugs.freedesktop.org/show_bug.cgi?id=66651

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index c3025de4f4e2..4de50c811879 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -1341,10 +1341,10 @@ static void rv770_program_display_gap(struct radeon_device *rdev)
         u32 tmp = RREG32(CG_DISPLAY_GAP_CNTL);
 
         tmp &= ~(DISP1_GAP_MCHG_MASK | DISP2_GAP_MCHG_MASK);
-        if (RREG32(AVIVO_D1CRTC_CONTROL) & AVIVO_CRTC_EN) {
+        if (rdev->pm.dpm.new_active_crtcs & 1) {
                 tmp |= DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_VBLANK);
                 tmp |= DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE);
-        } else if (RREG32(AVIVO_D2CRTC_CONTROL) & AVIVO_CRTC_EN) {
+        } else if (rdev->pm.dpm.new_active_crtcs & 2) {
                 tmp |= DISP1_GAP_MCHG(R600_PM_DISPLAY_GAP_IGNORE);
                 tmp |= DISP2_GAP_MCHG(R600_PM_DISPLAY_GAP_VBLANK);
         } else {