From: Ville Syrjälä Date: Thu, 7 Feb 2019 20:21:44 +0000 (+0200) Subject: drm/i915: Turn off pipe CSC when it's not needed X-Git-Tag: v5.4-rc1~498^2~29^2~714 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0593d2cd38134b9db4227897ec81eb18ab90b54a;p=platform%2Fkernel%2Flinux-rpi.git drm/i915: Turn off pipe CSC when it's not needed As with pipe gamma we can avoid the potential precision loss from the pipe csc unit when there is no need to use it. And again we need the same logic for updating the planes. v2: Rebase Signed-off-by: Ville Syrjälä Reviewed-by: Uma Shankar Reviewed-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20190207202146.26423-6-ville.syrjala@linux.intel.com --- diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index c7030f6..9720af3 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -663,7 +663,8 @@ intel_color_add_affected_planes(struct intel_crtc_state *new_crtc_state) intel_atomic_get_old_crtc_state(state, crtc); struct intel_plane *plane; - if (new_crtc_state->gamma_enable == old_crtc_state->gamma_enable) + if (new_crtc_state->gamma_enable == old_crtc_state->gamma_enable && + new_crtc_state->csc_enable == old_crtc_state->csc_enable) return 0; for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) { @@ -704,6 +705,7 @@ int intel_color_check(struct intel_crtc_state *crtc_state) struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev); const struct drm_property_blob *gamma_lut = crtc_state->base.gamma_lut; const struct drm_property_blob *degamma_lut = crtc_state->base.degamma_lut; + bool limited_color_range = false; int gamma_length, degamma_length; u32 gamma_tests, degamma_tests; int ret; @@ -717,7 +719,11 @@ int intel_color_check(struct intel_crtc_state *crtc_state) if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) - crtc_state->csc_enable = true; + limited_color_range = crtc_state->limited_color_range; + + crtc_state->csc_enable = + crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB || + crtc_state->base.ctm || limited_color_range; ret = intel_color_add_affected_planes(crtc_state); if (ret)