From: Ville Syrjälä ville.syrjala@linux.intel.com
Split i9xx_load_luts_internal() into neat gmch vs. ilk+ chunks. Avoids at least one branch in the inner loop, and makes life a bit less confusing.
Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com --- drivers/gpu/drm/i915/display/intel_color.c | 98 +++++++++++++--------- 1 file changed, 57 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 5443b8ec0a4c..992290a07086 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -397,41 +397,6 @@ static u32 ilk_lut_10(const struct drm_color_lut *color) drm_color_lut_extract(color->blue, 10); }
-/* Loads the legacy palette/gamma unit for the CRTC. */ -static void i9xx_load_luts_internal(const struct intel_crtc_state *crtc_state, - const struct drm_property_blob *blob) -{ - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - enum pipe pipe = crtc->pipe; - int i; - - if (HAS_GMCH(dev_priv)) { - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) - assert_dsi_pll_enabled(dev_priv); - else - assert_pll_enabled(dev_priv, pipe); - } - - if (blob) { - const struct drm_color_lut *lut = blob->data; - - for (i = 0; i < 256; i++) { - u32 word = i9xx_lut_8(&lut[i]); - - if (HAS_GMCH(dev_priv)) - I915_WRITE(PALETTE(pipe, i), word); - else - I915_WRITE(LGC_PALETTE(pipe, i), word); - } - } -} - -static void i9xx_load_luts(const struct intel_crtc_state *crtc_state) -{ - i9xx_load_luts_internal(crtc_state, crtc_state->hw.gamma_lut); -} - static void i9xx_color_commit(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); @@ -496,6 +461,34 @@ static void skl_color_commit(const struct intel_crtc_state *crtc_state) ilk_load_csc_matrix(crtc_state); }
+static void i9xx_load_lut_8(struct intel_crtc *crtc, + const struct drm_property_blob *blob) +{ + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + const struct drm_color_lut *lut; + enum pipe pipe = crtc->pipe; + int i; + + if (!blob) + return; + + lut = blob->data; + + for (i = 0; i < 256; i++) + I915_WRITE(PALETTE(pipe, i), i9xx_lut_8(&lut[i])); +} + +static void i9xx_load_luts(const struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut; + + assert_pll_enabled(dev_priv, crtc->pipe); + + i9xx_load_lut_8(crtc, gamma_lut); +} + static void i965_load_lut_10p6(struct intel_crtc *crtc, const struct drm_property_blob *blob) { @@ -519,14 +512,37 @@ static void i965_load_lut_10p6(struct intel_crtc *crtc, static void i965_load_luts(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) + assert_dsi_pll_enabled(dev_priv); + else + assert_pll_enabled(dev_priv, crtc->pipe); + if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) - i9xx_load_luts(crtc_state); + i9xx_load_lut_8(crtc, gamma_lut); else i965_load_lut_10p6(crtc, gamma_lut); }
+static void ilk_load_lut_8(struct intel_crtc *crtc, + const struct drm_property_blob *blob) +{ + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + const struct drm_color_lut *lut; + enum pipe pipe = crtc->pipe; + int i; + + if (!blob) + return; + + lut = blob->data; + + for (i = 0; i < 256; i++) + I915_WRITE(LGC_PALETTE(pipe, i), i9xx_lut_8(&lut[i])); +} + static void ilk_load_lut_10(struct intel_crtc *crtc, const struct drm_property_blob *blob) { @@ -545,7 +561,7 @@ static void ilk_load_luts(const struct intel_crtc_state *crtc_state) const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut;
if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) - i9xx_load_luts(crtc_state); + ilk_load_lut_8(crtc, gamma_lut); else ilk_load_lut_10(crtc, gamma_lut); } @@ -653,7 +669,7 @@ static void ivb_load_luts(const struct intel_crtc_state *crtc_state) const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) { - i9xx_load_luts(crtc_state); + ilk_load_lut_8(crtc, gamma_lut); } else if (crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT) { ivb_load_lut_10(crtc, degamma_lut, PAL_PREC_SPLIT_MODE | PAL_PREC_INDEX_VALUE(0)); @@ -676,7 +692,7 @@ static void bdw_load_luts(const struct intel_crtc_state *crtc_state) const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut;
if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) { - i9xx_load_luts(crtc_state); + ilk_load_lut_8(crtc, gamma_lut); } else if (crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT) { bdw_load_lut_10(crtc, degamma_lut, PAL_PREC_SPLIT_MODE | PAL_PREC_INDEX_VALUE(0)); @@ -777,7 +793,7 @@ static void glk_load_luts(const struct intel_crtc_state *crtc_state) glk_load_degamma_lut_linear(crtc_state);
if (crtc_state->gamma_mode == GAMMA_MODE_MODE_8BIT) { - i9xx_load_luts(crtc_state); + ilk_load_lut_8(crtc, gamma_lut); } else { bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_INDEX_VALUE(0)); ivb_load_lut_ext_max(crtc); @@ -913,7 +929,7 @@ static void icl_load_luts(const struct intel_crtc_state *crtc_state)
switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) { case GAMMA_MODE_MODE_8BIT: - i9xx_load_luts(crtc_state); + ilk_load_lut_8(crtc, gamma_lut); break; case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED: icl_program_gamma_superfine_segment(crtc_state);