>-----Original Message-----
>From: dri-devel [mailto:dri-devel-boun...@lists.freedesktop.org] On Behalf Of
>Ramalingam C
>Sent: Tuesday, April 3, 2018 7:28 PM
>To: intel-...@lists.freedesktop.org; dri-devel@lists.freedesktop.org;
>seanp...@chromium.org; dan...@ffwll.ch; ch...@chris-wilson.co.uk;
>jani.nik...@linux.intel.com; Winkler, Tomas <tomas.wink...@intel.com>;
>Usyskin, Alexander <alexander.usys...@intel.com>
>Cc: Vivi, Rodrigo <rodrigo.v...@intel.com>
>Subject: [PATCH v3 28/40] drm/i915: Handle HDCP2.2 downstream topology
>change
>
>When repeater notifies a downstream topology change, this patch
>reauthenticate the repeater alone with out disabling the hdcp encryption. If
>that
Don’t leave a space b/w with and out.
With that fix.
Reviewed-by: Uma Shankar <uma.shan...@intel.com>
>fails then complete reauthentication is executed.
>
>v2:
> Rebased.
>v3:
> No Changes.
>
>Signed-off-by: Ramalingam C <ramalinga...@intel.com>
>---
> drivers/gpu/drm/i915/intel_hdcp.c | 19 +++++++++++++++++--
> 1 file changed, 17 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_hdcp.c
>b/drivers/gpu/drm/i915/intel_hdcp.c
>index e2aec73aefe3..fd30e2b1ddc3 100644
>--- a/drivers/gpu/drm/i915/intel_hdcp.c
>+++ b/drivers/gpu/drm/i915/intel_hdcp.c
>@@ -1497,8 +1497,23 @@ static int intel_hdcp2_check_link(struct
>intel_connector *connector)
> goto out;
> }
>
>- DRM_INFO("[%s:%d] HDCP2.2 link failed, retrying authentication\n",
>- connector->base.name, connector->base.base.id);
>+ if (ret == DRM_HDCP_TOPOLOGY_CHANGE) {
>+ if (hdcp->hdcp_value ==
>DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
>+ goto out;
>+
>+ DRM_DEBUG_KMS("HDCP2.2 Downstream topology change\n");
>+ ret = hdcp2_authenticate_repeater_topology(connector);
>+ if (!ret) {
>+ hdcp->hdcp_value =
>DRM_MODE_CONTENT_PROTECTION_ENABLED;
>+ schedule_work(&hdcp->hdcp_prop_work);
>+ goto out;
>+ }
>+ DRM_ERROR("[%s:%d] Repeater topology auth failed.(%d)\n",
>+ connector->base.name, connector->base.base.id, ret);
>+ } else {
>+ DRM_ERROR("[%s:%d] HDCP2.2 link failed, retrying auth\n",
>+ connector->base.name, connector->base.base.id);
>+ }
>
> ret = _intel_hdcp2_disable(connector);
> if (ret) {
>--
>2.7.4
>
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