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drm/i915: Define WA 0870 and kill dead code. 

Let's introduce the WA number that is the
cause of having NV12 disabled on both SLK and BXT.

According to Spec:

WA 0870: "Display flickers with NV12 video playback in
Y tiling mode.
WA: Use YUV422 surface format instead of NV12."

v2: remove the useless dead code and consequently
    avoiding device info flag. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181031162845.12419-3-rodrigo.vivi@intel.com
This commit is contained in:
Rodrigo Vivi 2018-10-31 09:28:44 -07:00
parent 28b2f4e196
commit d521361755
2 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/i915/intel_display.c
View File

@ -458,9 +458,6 @@ static const struct intel_limit intel_limits_bxt = {
static void
skl_wa_clkgate(struct drm_i915_private *dev_priv, int pipe, bool enable)
{
if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
return;
if (enable)
I915_WRITE(CLKGATE_DIS_PSL(pipe),
DUPS1_GATING_DIS | DUPS2_GATING_DIS);
@ -5227,9 +5224,6 @@ static bool needs_nv12_wa(struct drm_i915_private *dev_priv,
if (!crtc_state->nv12_planes)
return false;
if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
return false;
if ((IS_GEN9(dev_priv) && !IS_GEMINILAKE(dev_priv)) ||
IS_CANNONLAKE(dev_priv))
return true;

1
drivers/gpu/drm/i915/intel_sprite.c
View File

@ -1868,6 +1868,7 @@ static bool skl_plane_has_planar(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) >= 11)
return plane_id <= PLANE_SPRITE3;
/* Display WA #0870: skl, bxt */
if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
return false;