diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_color.c | 81 |
1 files changed, 64 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 458e69578da6..93509cf7bbcc 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -597,6 +597,30 @@ create_linear_lut(struct drm_i915_private *i915, int lut_size) return blob; } +static struct drm_property_blob * +create_resized_lut(struct drm_i915_private *i915, + const struct drm_property_blob *blob_in, int lut_out_size) +{ + int i, lut_in_size = drm_color_lut_size(blob_in); + struct drm_property_blob *blob_out; + const struct drm_color_lut *lut_in; + struct drm_color_lut *lut_out; + + blob_out = drm_property_create_blob(&i915->drm, + sizeof(lut_out[0]) * lut_out_size, + NULL); + if (IS_ERR(blob_out)) + return blob_out; + + lut_in = blob_in->data; + lut_out = blob_out->data; + + for (i = 0; i < lut_out_size; i++) + lut_out[i] = lut_in[i * (lut_in_size - 1) / (lut_out_size - 1)]; + + return blob_out; +} + static void i9xx_load_lut_8(struct intel_crtc *crtc, const struct drm_property_blob *blob) { @@ -723,19 +747,14 @@ static void ivb_load_lut_10(struct intel_crtc *crtc, u32 prec_index) { struct drm_i915_private *i915 = to_i915(crtc->base.dev); - int hw_lut_size = ivb_lut_10_size(prec_index); const struct drm_color_lut *lut = blob->data; int i, lut_size = drm_color_lut_size(blob); enum pipe pipe = crtc->pipe; - for (i = 0; i < hw_lut_size; i++) { - /* We discard half the user entries in split gamma mode */ - const struct drm_color_lut *entry = - &lut[i * (lut_size - 1) / (hw_lut_size - 1)]; - + for (i = 0; i < lut_size; i++) { intel_de_write_fw(i915, PREC_PAL_INDEX(pipe), prec_index++); intel_de_write_fw(i915, PREC_PAL_DATA(pipe), - ilk_lut_10(entry)); + ilk_lut_10(&lut[i])); } /* @@ -751,7 +770,6 @@ static void bdw_load_lut_10(struct intel_crtc *crtc, u32 prec_index) { struct drm_i915_private *i915 = to_i915(crtc->base.dev); - int hw_lut_size = ivb_lut_10_size(prec_index); const struct drm_color_lut *lut = blob->data; int i, lut_size = drm_color_lut_size(blob); enum pipe pipe = crtc->pipe; @@ -759,14 +777,9 @@ static void bdw_load_lut_10(struct intel_crtc *crtc, intel_de_write_fw(i915, PREC_PAL_INDEX(pipe), prec_index | PAL_PREC_AUTO_INCREMENT); - for (i = 0; i < hw_lut_size; i++) { - /* We discard half the user entries in split gamma mode */ - const struct drm_color_lut *entry = - &lut[i * (lut_size - 1) / (hw_lut_size - 1)]; - + for (i = 0; i < lut_size; i++) intel_de_write_fw(i915, PREC_PAL_DATA(pipe), - ilk_lut_10(entry)); - } + ilk_lut_10(&lut[i])); /* * Reset the index, otherwise it prevents the legacy palette to be @@ -1343,7 +1356,7 @@ void intel_color_assert_luts(const struct intel_crtc_state *crtc_state) crtc_state->pre_csc_lut != i915->display.color.glk_linear_degamma_lut); drm_WARN_ON(&i915->drm, crtc_state->post_csc_lut != crtc_state->hw.gamma_lut); - } else { + } else if (crtc_state->gamma_mode != GAMMA_MODE_MODE_SPLIT) { drm_WARN_ON(&i915->drm, crtc_state->pre_csc_lut != crtc_state->hw.degamma_lut && crtc_state->pre_csc_lut != crtc_state->hw.gamma_lut); @@ -1564,6 +1577,38 @@ static u32 ivb_csc_mode(const struct intel_crtc_state *crtc_state) return CSC_POSITION_BEFORE_GAMMA; } +static int ivb_assign_luts(struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + struct drm_property_blob *degamma_lut, *gamma_lut; + + if (crtc_state->gamma_mode != GAMMA_MODE_MODE_SPLIT) { + ilk_assign_luts(crtc_state); + return 0; + } + + drm_WARN_ON(&i915->drm, drm_color_lut_size(crtc_state->hw.degamma_lut) != 1024); + drm_WARN_ON(&i915->drm, drm_color_lut_size(crtc_state->hw.gamma_lut) != 1024); + + degamma_lut = create_resized_lut(i915, crtc_state->hw.degamma_lut, 512); + if (IS_ERR(degamma_lut)) + return PTR_ERR(degamma_lut); + + gamma_lut = create_resized_lut(i915, crtc_state->hw.gamma_lut, 512); + if (IS_ERR(gamma_lut)) { + drm_property_blob_put(degamma_lut); + return PTR_ERR(gamma_lut); + } + + drm_property_replace_blob(&crtc_state->pre_csc_lut, degamma_lut); + drm_property_replace_blob(&crtc_state->post_csc_lut, gamma_lut); + + drm_property_blob_put(degamma_lut); + drm_property_blob_put(gamma_lut); + + return 0; +} + static int ivb_color_check(struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); @@ -1599,7 +1644,9 @@ static int ivb_color_check(struct intel_crtc_state *crtc_state) if (ret) return ret; - ilk_assign_luts(crtc_state); + ret = ivb_assign_luts(crtc_state); + if (ret) + return ret; crtc_state->preload_luts = intel_can_preload_luts(crtc_state); |