[Intel-gfx] [PATCH v4 5/6] drm/i915: set colorspace for YCBCR420 outputs

[Shashank Sharma]

When output colorspace is YCBCR420, we have to load the
corresponding colorspace in AVI infoframe. This patch fills
the colorspace of AVI infoframe as per the output mode.

V2: Rebase
V3: Rebase
V4: Rebase
V5: Added r-b from Ander
V6: Checking RGB/YCBCR420 output only (Ville)
V7: Add colorspace info in driver(not drm layer) (Ville)
V8: Rebase
V9: Added r-b from Ville

Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Ander Conselvan de Oliveira <conselvan2 at gmail.com>

Reviewed-by: Ander Conselvan de Oliveira <conselvan2 at gmail.com>
Reviewed-by: Ville Syrjala <ville.syrjala at linux.intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
---
 drivers/gpu/drm/i915/intel_hdmi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 6addef5..bedc6eb 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -472,12 +472,18 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 		return;
 	}
 
+	if (crtc_state->ycbcr420)
+		frame.avi.colorspace = HDMI_COLORSPACE_YUV420;
+	else
+		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
+
 	drm_hdmi_avi_infoframe_quant_range(&frame.avi, adjusted_mode,
 					   crtc_state->limited_color_range ?
 					   HDMI_QUANTIZATION_RANGE_LIMITED :
 					   HDMI_QUANTIZATION_RANGE_FULL,
 					   intel_hdmi->rgb_quant_range_selectable);
 
+	/* TODO: handle pixel repetition for YCBCR420 outputs */
 	intel_write_infoframe(encoder, crtc_state, &frame);
 }
 
-- 
2.7.4