From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_color.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 962db1236970..45649904ba5c 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -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;
--
2.21.0
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