[Intel-gfx] [PATCH 4/4] drm/i915/debugfs: sinks hdcp capabilities

[Ramalingam C]

debugfs entry for providing the hdcp capabilities of the sinks
connected to the HDCP capable connectors.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 5f3c639522fa..d89df0b8b7fb 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2210,6 +2210,36 @@ static const char *rps_power_to_str(unsigned int power)
 	return strings[power];
 }
 
+static int i915_sinks_hdcp_capabilities(struct seq_file *m, void *unused)
+{
+	struct drm_i915_private *dev_priv = node_to_i915(m->private);
+	struct drm_device *dev = &dev_priv->drm;
+	struct intel_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+	bool is_hdcp14;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	for_each_intel_connector_iter(connector, &conn_iter) {
+		if (connector->base.status != connector_status_connected)
+			continue;
+
+		/* HDCP is supported by connector */
+		if (!connector->hdcp_shim)
+			continue;
+
+		/* Detect sink's HDCP1.4 capability */
+		is_hdcp14 = intel_hdcp_capable(connector);
+
+		seq_printf(m, "%s:%d HDCP version: ", connector->base.name,
+			   connector->base.base.id);
+		seq_printf(m, "%s ", !is_hdcp14 ? "None" : "HDCP1.4");
+		seq_puts(m, "\n");
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	return 0;
+}
+
 static int i915_rps_boost_info(struct seq_file *m, void *data)
 {
 	struct drm_i915_private *dev_priv = node_to_i915(m->private);
@@ -4805,6 +4835,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
 	{"i915_sseu_status", i915_sseu_status, 0},
 	{"i915_drrs_status", i915_drrs_status, 0},
 	{"i915_rps_boost_info", i915_rps_boost_info, 0},
+	{"i915_sinks_hdcp_capabilities", i915_sinks_hdcp_capabilities, 0},
 };
 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
 
-- 
2.7.4