[Intel-gfx] [PATCH v2 2/7] drm/i915: Disable infoframes when shutting down DDI HDMI

[Shashank Sharma]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Disabling the video DIP when shutting the port down seems like a good
idea.

Bspec says:
"When disabling both the DIP port and DIP transmission,
 first disable the port and then disable DIP."
and
"Restriction : GCP is only supported with HDMI when the bits per color is
 not equal to 8. GCP must be enabled prior to enabling TRANS_DDI_FUNC_CTL
 for HDMI with bits per color not equal to 8 and disabled after disabling
 TRANS_DDI_FUNC_CTL"

So let's do it in the .post_disable() hook.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma at intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index d838e8d..fdfc314 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2238,6 +2238,13 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder,
 	if (wait)
 		intel_wait_ddi_buf_idle(dev_priv, port);
 
+	if (type == INTEL_OUTPUT_HDMI) {
+		struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+
+		intel_hdmi->set_infoframes(encoder, false,
+					old_crtc_state, old_conn_state);
+	}
+
 	if (intel_dp) {
 		intel_edp_panel_vdd_on(intel_dp);
 		intel_edp_panel_off(intel_dp);
-- 
2.7.4