drm/i915: Drop the pointless linear legacy LUT load on CHV

We now bypass the legacy LUT when it's not needed, so
no point in filling it up with a linear LUT.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190327155045.28446-10-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 66e2b7d4841045c80c87863468c4424a4b92773c..8d8fca7b5d6535e46a7a4dddbf965047a7782515 100644 (file)
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -376,15 +376,6 @@ static void i9xx_load_luts_internal(const struct intel_crtc_state *crtc_state,
                                (drm_color_lut_extract(lut[i].green, 8) << 8) |
                                drm_color_lut_extract(lut[i].blue, 8);
 
-                       if (HAS_GMCH(dev_priv))
-                               I915_WRITE(PALETTE(pipe, i), word);
-                       else
-                               I915_WRITE(LGC_PALETTE(pipe, i), word);
-               }
-       } else {
-               for (i = 0; i < 256; i++) {
-                       u32 word = (i << 16) | (i << 8) | i;
-
                        if (HAS_GMCH(dev_priv))
                                I915_WRITE(PALETTE(pipe, i), word);
                        else
@@ -643,7 +634,7 @@ static void cherryview_load_luts(const struct intel_crtc_state *crtc_state)
        cherryview_load_csc_matrix(crtc_state);
 
        if (crtc_state_is_legacy_gamma(crtc_state)) {
-               i9xx_load_luts_internal(crtc_state, gamma_lut);
+               i9xx_load_luts(crtc_state);
                return;
        }
 
@@ -682,12 +673,6 @@ static void cherryview_load_luts(const struct intel_crtc_state *crtc_state)
                        I915_WRITE(CGM_PIPE_GAMMA(pipe, i, 1), word1);
                }
        }
-
-       /*
-        * Also program a linear LUT in the legacy block (behind the
-        * CGM block).
-        */
-       i9xx_load_luts_internal(crtc_state, NULL);
 }
 
 void intel_color_load_luts(const struct intel_crtc_state *crtc_state)