drm/i915: Add debugs for the C8 vs. legacy LUT case

Leave a hint in dmesg when we reject a configuration attempting
to use C8 planes without the legacy LUT loaded.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190513133904.20374-3-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2019-05-13 16:39:04 +03:00
parent 638d87c4a7
commit be8a4b2d31

View file

@ -959,8 +959,10 @@ static int check_luts(const struct intel_crtc_state *crtc_state)
return 0;
/* C8 relies on its palette being stored in the legacy LUT */
if (crtc_state->c8_planes)
if (crtc_state->c8_planes) {
DRM_DEBUG_KMS("C8 pixelformat requires the legacy LUT\n");
return -EINVAL;
}
degamma_length = INTEL_INFO(dev_priv)->color.degamma_lut_size;
gamma_length = INTEL_INFO(dev_priv)->color.gamma_lut_size;