[Intel-gfx] [PATCH 5/7] drm/i915: Disable trickle feed for SNB/IVB cursors

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We disable trickle feed whenever possible, except for the cursors
on SNB/IVB. Let's try disabling it there too if for no other reason
than consistency.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0cf02f226fd4..ab2402c225c7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9548,6 +9548,9 @@ static u32 i9xx_cursor_ctl(const struct intel_crtc_state *crtc_state,
 
 	cntl = MCURSOR_GAMMA_ENABLE;
 
+	if (IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv))
+		cntl |= MCURSOR_TRICKLE_FEED_DISABLE;
+
 	if (HAS_DDI(dev_priv))
 		cntl |= MCURSOR_PIPE_CSC_ENABLE;
 
-- 
2.13.6