When the platform support HDCP2.2, HDCP2.2 capability is probed
on panel from late_init. If platform and panel support HDCP2.2,
DRM_HDCP2_SUPPORTED bit of HDCP property will be set.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/drm_hdcp.c | 41 ++++++++++++++++++++++++++++++++++++++---
1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c
index 5441b55..cb20cc9 100644
--- a/drivers/gpu/drm/drm_hdcp.c
+++ b/drivers/gpu/drm/drm_hdcp.c
@@ -162,6 +162,42 @@ int drm_hdcp_set_property(struct drm_connector *connector,
return 0;
}
+static void drm_hdcp_2_2_late_init(struct drm_hdcp *hdcp)
+{
+ uint8_t hdcp2version;
+ void *buf;
+ ssize_t receiv, size;
+ unsigned int offset;
+
+ if (hdcp->protocol == WIRED_PROTOCOL_HDMI) {
+ offset = HDMI_HDCP2_REG_VER_OFFSET;
+ buf = (void *)&hdcp2version;
+ size = sizeof(hdcp2version);
+ } else {
+ DRM_ERROR("Unsupported Protocol\n");
+ return;
+ }
+
+ receiv = hdcp->hdcp_funcs->link_read(hdcp, offset, buf, size);
+ if (receiv == size) {
+ mutex_lock(&hdcp->mutex);
+ if (hdcp2version & HDMI_HDCP_2_2_SUPPORT_MASK) {
+ hdcp->ver_support_on_panel |= HDCP_2_2_SUPPORT;
+ hdcp->connector->hdcp_state |= DRM_HDCP2_SUPPORTED;
+
+ DRM_DEBUG("HDMI with HDCP 2.2\n");
+ } else {
+ hdcp->ver_support_on_panel &= ~HDCP_2_2_SUPPORT;
+ hdcp->connector->hdcp_state &= ~DRM_HDCP2_SUPPORTED;
+
+ DRM_DEBUG("HDMI without HDCP 2.2\n");
+ }
+ mutex_unlock(&hdcp->mutex);
+ } else {
+ DRM_ERROR("HDCP Link read failed. Error: %d\n", (int)receiv);
+ }
+}
+
void drm_hdcp_late_init(struct drm_connector *connector)
{
struct drm_hdcp *hdcp = connector->hdcp;
@@ -169,9 +205,8 @@ void drm_hdcp_late_init(struct drm_connector *connector)
if (hdcp->hdcp_funcs->late_init)
hdcp->hdcp_funcs->late_init(hdcp);
- /*
- * TODO: Invoke the Version specific late_init
- */
+ if (hdcp->ver_support_on_plat & HDCP_2_2_SUPPORT)
+ drm_hdcp_2_2_late_init(hdcp);
}
/**
--
2.7.4
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