drm/radeon/dce6: fix display powergating
Only enable it when we disable the display rather than
at DPMS time since enabling it requires a full modeset
to restore the display state. Fixes blank screens in
certain cases.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 9175615..21a892c 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -252,8 +252,6 @@
radeon_crtc->enabled = true;
/* adjust pm to dpms changes BEFORE enabling crtcs */
radeon_pm_compute_clocks(rdev);
- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
- atombios_powergate_crtc(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_ENABLE);
if (ASIC_IS_DCE3(rdev) && !ASIC_IS_DCE6(rdev))
atombios_enable_crtc_memreq(crtc, ATOM_ENABLE);
@@ -271,8 +269,6 @@
atombios_enable_crtc_memreq(crtc, ATOM_DISABLE);
atombios_enable_crtc(crtc, ATOM_DISABLE);
radeon_crtc->enabled = false;
- if (ASIC_IS_DCE6(rdev) && !radeon_crtc->in_mode_set)
- atombios_powergate_crtc(crtc, ATOM_ENABLE);
/* adjust pm to dpms changes AFTER disabling crtcs */
radeon_pm_compute_clocks(rdev);
break;
@@ -1844,6 +1840,8 @@
int i;
atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+ if (ASIC_IS_DCE6(rdev))
+ atombios_powergate_crtc(crtc, ATOM_ENABLE);
for (i = 0; i < rdev->num_crtc; i++) {
if (rdev->mode_info.crtcs[i] &&