[02/10] drm/i915/hdcp: Move source hdcp2 checks into its own function

Commit Message

Kandpal, Suraj Jan. 31, 2024, 7:32 p.m. UTC

Move checks on the source side for HDCP2.2 into its own function
so that they can be used in the HDCP remote capability check
function.

Signed-off-by: Suraj Kandpal <[e-mail]>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index c3e692e7f790..4593ac10e2fa 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -160,12 +160,14 @@  bool intel_hdcp_capable(struct intel_connector *connector)
 	return capable;
 }
 
-/* Is HDCP2.2 capable on Platform and Sink */
-bool intel_hdcp2_capable(struct intel_connector *connector)
+/*
+ * Check if the source has all the building blocks ready to make
+ * HDCP 2.2 work
+ */
+static bool intel_hdcp2_prerequisite(struct intel_connector *connector)
 {
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
-	bool capable = false;
 
 	/* I915 support for HDCP2.2 */
 	if (!hdcp->hdcp2_supported)
@@ -185,6 +187,18 @@  bool intel_hdcp2_capable(struct intel_connector *connector)
 	}
 	mutex_unlock(&i915->display.hdcp.hdcp_mutex);
 
+	return true;
+}
+
+/* Is HDCP2.2 capable on Platform and Sink */
+bool intel_hdcp2_capable(struct intel_connector *connector)
+{
+	struct intel_hdcp *hdcp = &connector->hdcp;
+	bool capable = false;
+
+	if (!intel_hdcp2_prerequisite(connector))
+		return false;
+
 	/* Sink's capability for HDCP2.2 */
 	hdcp->shim->hdcp_2_2_capable(connector, &capable);