[Intel-gfx] [v14 05/15] drm/i915/display: Add a WARN for invalid output range and format

[Uma Shankar]

Add a WARN to rule out an invalid output range and format
combination. This is to align the lspcon code with
compute_avi_infoframes.

Signed-off-by: Uma Shankar <uma.shankar at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_lspcon.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
index 7cb65e0f241e..9552dfc55e20 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -523,6 +523,10 @@ void lspcon_set_infoframes(struct intel_encoder *encoder,
 	else
 		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
 
+	/* nonsense combination */
+	drm_WARN_ON(encoder->base.dev, crtc_state->limited_color_range &&
+		    crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
+
 	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_RGB) {
 		drm_hdmi_avi_infoframe_quant_range(&frame.avi,
 						   conn_state->connector,
-- 
2.26.2