[Intel-gfx] [PATCH 01/13] drm/i915/hdcp: Update CP property in update_pipe

[Anshuman Gupta]

When crtc state need_modeset is true it is not necessary
it is going to be a real modeset, it can turns to be a
update_pipe instead of modeset.
This turns content protection property to be DESIRED and hdcp
update_pipe left with property to be in DESIRED state but
actually hdcp->value was ENABLED.
This caught with DP MST setup, when disabling HDCP on a connector
sets the crtc state need_modeset to true for all crtc driving
the other DP-MST topology connectors.

Fixes: 33f9a623bfc6 ("drm/i915/hdcp: Update CP as per the kernel internal state")
Cc: Ramalingam C <ramalingam.c at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index b2a4bbcfdcd2..cbe3ee661bb7 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -2220,6 +2220,10 @@ void intel_hdcp_update_pipe(struct intel_atomic_state *state,
 		/* Avoid enabling hdcp, if it already ENABLED */
 		desired_and_not_enabled =
 			hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED;
+
+		if (!desired_and_not_enabled && !content_protection_type_changed)
+			schedule_work(&hdcp->prop_work);
+
 		mutex_unlock(&hdcp->mutex);
 	}
 
-- 
2.26.2