[PATCH 26/26] drm/i915: debugfs: HDCP2.2 capability read

[Ramalingam C]

Adding the HDCP2.2 capability of HDCP src and sink info into debugfs
entry "i915_hdcp_sink_capability"

This helps the userspace tests to skip the HDCP2.2 test on non HDCP2.2
sinks.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 25 +++++++++++++++++++++----
 drivers/gpu/drm/i915/intel_drv.h    |  1 +
 drivers/gpu/drm/i915/intel_hdcp.c   |  2 +-
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 37175414ce89..3f5c44c2ef4a 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4758,10 +4758,18 @@ static int i915_panel_show(struct seq_file *m, void *data)
 }
 DEFINE_SHOW_ATTRIBUTE(i915_panel);
 
+static bool intel_lspcon_present(struct drm_connector *connector)
+{
+	struct intel_lspcon *lspcon = enc_to_intel_lspcon(connector->encoder);
+
+	return lspcon->active;
+}
+
 static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
 {
 	struct drm_connector *connector = m->private;
 	struct intel_connector *intel_connector = to_intel_connector(connector);
+	bool hdcp_cap, hdcp2_cap;
 
 	if (connector->status != connector_status_connected)
 		return -ENODEV;
@@ -4770,10 +4778,19 @@ static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
 	if (!intel_connector->hdcp.shim)
 		return -EINVAL;
 
-	seq_printf(m, "%s:%d HDCP version: ", connector->name,
-		   connector->base.id);
-	seq_printf(m, "%s ", !intel_hdcp_capable(intel_connector) ?
-		   "None" : "HDCP1.4");
+	seq_printf(m, "%s:%d %sHDCP version: ", connector->name,
+		   connector->base.id, intel_lspcon_present(connector) ?
+		   "Lspcon " : "");
+	hdcp_cap = intel_hdcp_capable(intel_connector);
+	hdcp2_cap = intel_hdcp2_capable(intel_connector);
+
+	if (hdcp_cap)
+		seq_puts(m, "HDCP1.4 ");
+	if (hdcp2_cap)
+		seq_puts(m, "HDCP2.2 ");
+
+	if (!hdcp_cap && !hdcp2_cap)
+		seq_puts(m, "None");
 	seq_puts(m, "\n");
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c7ef7e71439d..fb055d688cdf 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -2163,6 +2163,7 @@ int intel_hdcp_enable(struct intel_connector *connector, u8 content_type,
 int intel_hdcp_disable(struct intel_connector *connector);
 bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);
 bool intel_hdcp_capable(struct intel_connector *connector);
+bool intel_hdcp2_capable(struct intel_connector *connector);
 void intel_hdcp_component_init(struct drm_i915_private *dev_priv);
 void intel_hdcp_component_fini(struct drm_i915_private *dev_priv);
 void intel_hdcp_cleanup(struct intel_connector *connector);
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 8c05f382718c..29175ccddc92 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -76,7 +76,7 @@ bool intel_hdcp_capable(struct intel_connector *connector)
 }
 
 /* Is HDCP2.2 capable on Platform and Sink */
-static bool intel_hdcp2_capable(struct intel_connector *connector)
+bool intel_hdcp2_capable(struct intel_connector *connector)
 {
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
-- 
2.7.4