drm/i915: BDW PSR: Add single frame update support.
When link is in stand by and PSR exit is triggered by a primary or sprite
plane flip this mode allows only one single updated frame to be send to
display than get back to PSR immediately.
Reviewed-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 68289ce..73e4a5c 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1723,6 +1723,7 @@
val |= EDP_PSR_TP2_TP3_TIME_0us;
val |= EDP_PSR_TP1_TIME_0us;
val |= EDP_PSR_SKIP_AUX_EXIT;
+ val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0;
} else
val |= EDP_PSR_LINK_DISABLE;