forked from Minki/linux
drm/i915: Extract ilk_lut_10()
Extract a helper to calculate the ILK+ 10bit gamma LUT entry. It's already duplicated twice, and soon we'll have more. v2: s/it/bit/ (Matt) Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190401200231.2333-2-ville.syrjala@linux.intel.com Reviewed-by: Uma Shankar <uma.shankar@intel.com>
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@ -359,6 +359,13 @@ static void cherryview_load_csc_matrix(const struct intel_crtc_state *crtc_state
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I915_WRITE(CGM_PIPE_MODE(pipe), crtc_state->cgm_mode);
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}
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static u32 ilk_lut_10(const struct drm_color_lut *color)
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{
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return drm_color_lut_extract(color->red, 10) << 20 |
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drm_color_lut_extract(color->green, 10) << 10 |
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drm_color_lut_extract(color->blue, 10);
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}
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/* Loads the legacy palette/gamma unit for the CRTC. */
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static void i9xx_load_luts_internal(const struct intel_crtc_state *crtc_state,
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const struct drm_property_blob *blob)
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@ -473,14 +480,8 @@ static void bdw_load_degamma_lut(const struct intel_crtc_state *crtc_state)
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if (degamma_lut) {
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const struct drm_color_lut *lut = degamma_lut->data;
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for (i = 0; i < lut_size; i++) {
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u32 word =
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drm_color_lut_extract(lut[i].red, 10) << 20 |
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drm_color_lut_extract(lut[i].green, 10) << 10 |
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drm_color_lut_extract(lut[i].blue, 10);
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I915_WRITE(PREC_PAL_DATA(pipe), word);
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}
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for (i = 0; i < lut_size; i++)
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I915_WRITE(PREC_PAL_DATA(pipe), ilk_lut_10(&lut[i]));
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} else {
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for (i = 0; i < lut_size; i++) {
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u32 v = (i * ((1 << 10) - 1)) / (lut_size - 1);
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@ -509,14 +510,8 @@ static void bdw_load_gamma_lut(const struct intel_crtc_state *crtc_state, u32 of
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if (gamma_lut) {
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const struct drm_color_lut *lut = gamma_lut->data;
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for (i = 0; i < lut_size; i++) {
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u32 word =
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(drm_color_lut_extract(lut[i].red, 10) << 20) |
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(drm_color_lut_extract(lut[i].green, 10) << 10) |
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drm_color_lut_extract(lut[i].blue, 10);
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I915_WRITE(PREC_PAL_DATA(pipe), word);
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}
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for (i = 0; i < lut_size; i++)
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I915_WRITE(PREC_PAL_DATA(pipe), ilk_lut_10(&lut[i]));
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/*
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* Program the max register to clamp values > 1.0.
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