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* [PATCH] drm/i915/hdcp: Fix Repeater authentication during topology change
@ 2024-12-17  8:37 Suraj Kandpal
  2024-12-17  8:55 ` ✓ CI.Patch_applied: success for " Patchwork
                   ` (8 more replies)
  0 siblings, 9 replies; 12+ messages in thread
From: Suraj Kandpal @ 2024-12-17  8:37 UTC (permalink / raw)
  To: intel-xe, intel-gfx; +Cc: ankit.k.nautiyal, Suraj Kandpal

When topology changes before beginning a new HDCP authentication by
sending AKE_init message we need to first authenticate only the
repeater if that fails only then makes sense to enable a new HDCP
authentication. Even though it made sense to not enable HDCP directly
from check_link and schedule it repeater authentication needs to be
done immidieatly

Fixes: 47ef55a8b784 ("drm/i915/hdcp: Don't enable HDCP2.2 directly from check_link")
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index f6e68a0e3b6d..9ff2274ed7e7 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -2182,6 +2182,19 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
 
 		drm_dbg_kms(display->drm,
 			    "HDCP2.2 Downstream topology change\n");
+
+		ret = hdcp2_authenticate_repeater_topology(connector);
+		if (!ret) {
+			intel_hdcp_update_value(connector,
+						DRM_MODE_CONTENT_PROTECTION_ENABLED,
+						true);
+			goto out;
+		}
+
+		drm_dbg_kms(display->drm,
+			    "[CONNECTOR:%d:%s] Repeater topology auth failed.(%d)\n",
+			    connector->base.base.id, connector->base.name,
+			    ret);
 	} else {
 		drm_dbg_kms(display->drm,
 			    "[CONNECTOR:%d:%s] HDCP2.2 link failed, retrying auth\n",
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 12+ messages in thread
end of thread, other threads:[~2025-01-17  4:18 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
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2024-12-17  8:37 [PATCH] drm/i915/hdcp: Fix Repeater authentication during topology change Suraj Kandpal
2024-12-17  8:55 ` ✓ CI.Patch_applied: success for " Patchwork
2024-12-17  8:55 ` ✓ CI.checkpatch: " Patchwork
2024-12-17  8:56 ` ✓ CI.KUnit: " Patchwork
2024-12-17  9:14 ` ✓ CI.Build: " Patchwork
2024-12-17  9:16 ` ✓ CI.Hooks: " Patchwork
2024-12-17  9:18 ` ✓ CI.checksparse: " Patchwork
2024-12-17 10:06 ` ✓ Xe.CI.BAT: " Patchwork
2024-12-17 16:56 ` ✗ Xe.CI.Full: failure " Patchwork
2025-01-17  4:17   ` Kandpal, Suraj
2025-01-17  4:17   ` Kandpal, Suraj
2025-01-17  4:10 ` [PATCH] " Nautiyal, Ankit K

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