diff mbox series

[CI,2/3] drm/i915/dp: Power down sink before disable pipe/transcoder clock

Message ID 20191202222513.337777-2-jose.souza@intel.com (mailing list archive)
State New, archived
Headers show
Series [CI,1/3] drm/i915/display: Check the old state to find port sync slave | expand

Commit Message

Souza, Jose Dec. 2, 2019, 10:25 p.m. UTC 
Disabling pipe/transcoder clock before power down sink could cause
sink lost signal, causing it to trigger a hotplug to notify source
that link signal was lost.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index a976606d21c7..0ce06a94a27e 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3802,12 +3802,12 @@  static void intel_ddi_post_disable_dp(struct intel_encoder *encoder,
 	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
 
 	if (!is_mst) {
-		intel_ddi_disable_pipe_clock(old_crtc_state);
 		/*
 		 * Power down sink before disabling the port, otherwise we end
 		 * up getting interrupts from the sink on detecting link loss.
 		 */
 		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
+		intel_ddi_disable_pipe_clock(old_crtc_state);
 	}
 
 	intel_disable_ddi_buf(encoder, old_crtc_state);