From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Tue, 30 Jan 2018 22:38:05 +0200
Subject: drm/i915: Disable trickle feed for SNB/IVB cursors
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Git-commit: e876b78c5fbf1ef1b5eded8bd4d7ae045ade589a
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
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@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180130203807.13721-5-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/intel_display.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9706,6 +9706,9 @@ static u32 i9xx_cursor_ctl(const struct
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
u32 cntl = 0;
+ if (IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv))
+ cntl |= MCURSOR_TRICKLE_FEED_DISABLE;
+
if (INTEL_GEN(dev_priv) <= 10) {
cntl |= MCURSOR_GAMMA_ENABLE;