drm/i915/dsb: Don't use DSB to load the LUTs during full modeset

Using the DSB for LUT loading during full modesets would require
some actual though. Let's just use mmio for the time being.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-12-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index cdca3a89fa9c7688fc78170091730456415afe56..bb6eda00561374d4c5227a50111b0ec655172f92 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -1886,6 +1886,10 @@ void intel_color_prepare_commit(struct intel_crtc_state *crtc_state)
        /* FIXME DSB has issues loading LUTs, disable it for now */
        return;
 
+       if (!crtc_state->hw.active ||
+           intel_crtc_needs_modeset(crtc_state))
+               return;
+
        if (!crtc_state->pre_csc_lut && !crtc_state->post_csc_lut)
                return;