diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c index 8bb8983b490c..c336524d9225 100644 --- a/drivers/gpu/drm/i915/display/intel_color.c +++ b/drivers/gpu/drm/i915/display/intel_color.c @@ -1362,13 +1362,13 @@ static int check_lut_size(const struct drm_property_blob *lut, int expected) return 0; } -static int check_luts(const struct intel_crtc_state *crtc_state) +static int _check_luts(const struct intel_crtc_state *crtc_state, + u32 degamma_tests, u32 gamma_tests) { struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); const struct drm_property_blob *gamma_lut = crtc_state->hw.gamma_lut; const struct drm_property_blob *degamma_lut = crtc_state->hw.degamma_lut; int gamma_length, degamma_length; - u32 gamma_tests, degamma_tests; /* C8 relies on its palette being stored in the legacy LUT */ if (crtc_state->c8_planes && !lut_is_legacy(crtc_state->hw.gamma_lut)) { @@ -1379,8 +1379,6 @@ static int check_luts(const struct intel_crtc_state *crtc_state) degamma_length = intel_degamma_lut_size(crtc_state); gamma_length = intel_gamma_lut_size(crtc_state); - degamma_tests = intel_degamma_lut_tests(crtc_state); - gamma_tests = intel_gamma_lut_tests(crtc_state); if (check_lut_size(degamma_lut, degamma_length) || check_lut_size(gamma_lut, gamma_length)) @@ -1393,6 +1391,13 @@ static int check_luts(const struct intel_crtc_state *crtc_state) return 0; } +static int check_luts(const struct intel_crtc_state *crtc_state) +{ + return _check_luts(crtc_state, + intel_degamma_lut_tests(crtc_state), + intel_gamma_lut_tests(crtc_state)); +} + static u32 i9xx_gamma_mode(struct intel_crtc_state *crtc_state) { if (!crtc_state->gamma_enable || @@ -1414,9 +1419,11 @@ void intel_color_assert_luts(const struct intel_crtc_state *crtc_state) crtc_state->post_csc_lut != crtc_state->hw.gamma_lut); } else if (DISPLAY_VER(i915) == 10) { drm_WARN_ON(&i915->drm, + crtc_state->post_csc_lut == crtc_state->hw.gamma_lut && crtc_state->pre_csc_lut != crtc_state->hw.degamma_lut && crtc_state->pre_csc_lut != i915->display.color.glk_linear_degamma_lut); drm_WARN_ON(&i915->drm, + crtc_state->post_csc_lut != NULL && crtc_state->post_csc_lut != crtc_state->hw.gamma_lut); } else if (crtc_state->gamma_mode != GAMMA_MODE_MODE_SPLIT) { drm_WARN_ON(&i915->drm, @@ -1728,10 +1735,33 @@ static u32 glk_gamma_mode(const struct intel_crtc_state *crtc_state) return GAMMA_MODE_MODE_10BIT; } -static void glk_assign_luts(struct intel_crtc_state *crtc_state) +static bool glk_use_pre_csc_lut_for_gamma(const struct intel_crtc_state *crtc_state) +{ + return crtc_state->hw.gamma_lut && + !crtc_state->c8_planes && + crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB; +} + +static int glk_assign_luts(struct intel_crtc_state *crtc_state) { struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); + if (glk_use_pre_csc_lut_for_gamma(crtc_state)) { + struct drm_property_blob *gamma_lut; + + gamma_lut = create_resized_lut(i915, crtc_state->hw.gamma_lut, + INTEL_INFO(i915)->display.color.degamma_lut_size); + if (IS_ERR(gamma_lut)) + return PTR_ERR(gamma_lut); + + drm_property_replace_blob(&crtc_state->pre_csc_lut, gamma_lut); + drm_property_replace_blob(&crtc_state->post_csc_lut, NULL); + + drm_property_blob_put(gamma_lut); + + return 0; + } + intel_assign_luts(crtc_state); /* @@ -1743,6 +1773,19 @@ static void glk_assign_luts(struct intel_crtc_state *crtc_state) if (crtc_state->csc_enable && !crtc_state->pre_csc_lut) drm_property_replace_blob(&crtc_state->pre_csc_lut, i915->display.color.glk_linear_degamma_lut); + + return 0; +} + +static int glk_check_luts(const struct intel_crtc_state *crtc_state) +{ + u32 degamma_tests = intel_degamma_lut_tests(crtc_state); + u32 gamma_tests = intel_gamma_lut_tests(crtc_state); + + if (glk_use_pre_csc_lut_for_gamma(crtc_state)) + gamma_tests |= degamma_tests; + + return _check_luts(crtc_state, degamma_tests, gamma_tests); } static int glk_color_check(struct intel_crtc_state *crtc_state) @@ -1750,7 +1793,7 @@ static int glk_color_check(struct intel_crtc_state *crtc_state) struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev); int ret; - ret = check_luts(crtc_state); + ret = glk_check_luts(crtc_state); if (ret) return ret; @@ -1769,11 +1812,13 @@ static int glk_color_check(struct intel_crtc_state *crtc_state) } crtc_state->gamma_enable = + !glk_use_pre_csc_lut_for_gamma(crtc_state) && crtc_state->hw.gamma_lut && !crtc_state->c8_planes; /* On GLK+ degamma LUT is controlled by csc_enable */ crtc_state->csc_enable = + glk_use_pre_csc_lut_for_gamma(crtc_state) || crtc_state->hw.degamma_lut || crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB || crtc_state->hw.ctm || crtc_state->limited_color_range; @@ -1786,7 +1831,9 @@ static int glk_color_check(struct intel_crtc_state *crtc_state) if (ret) return ret; - glk_assign_luts(crtc_state); + ret = glk_assign_luts(crtc_state); + if (ret) + return ret; crtc_state->preload_luts = intel_can_preload_luts(crtc_state);