[PATCH] drm/i915: add port info to debugfs

[Simon Ser]

This patch adds a line with the port name to connectors in
debugfs/i915_debug_info. If the port is Type-C, the Type-C port number is
printed too.

Signed-off-by: Simon Ser <simon.ser at intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Cc: Manasi Navare <nabasi.d.navare at intel.com>
---

Thanks for your comments, Imre and Manasi. Here is v2:

- Use same port formatting as intel_tc_port_init (e.g. "C/TC#1")
- Fix typo in commit message

 drivers/gpu/drm/i915/i915_debugfs.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b39226d7f8d2..4ba508c954f8 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2557,9 +2557,11 @@ static void intel_lvds_info(struct seq_file *m,
 static void intel_connector_info(struct seq_file *m,
 				 struct drm_connector *connector)
 {
+	struct drm_i915_private *i915 = to_i915(connector->dev);
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 	struct intel_encoder *intel_encoder = intel_connector->encoder;
 	struct drm_display_mode *mode;
+	enum tc_port tc_port;

 	seq_printf(m, "connector %d: type %s, status: %s\n",
 		   connector->base.id, connector->name,
@@ -2578,6 +2580,14 @@ static void intel_connector_info(struct seq_file *m,
 	if (!intel_encoder)
 		return;

+	if (intel_encoder->port != PORT_NONE) {
+		seq_printf(m, "\tport: %c", port_name(intel_encoder->port));
+		tc_port = intel_port_to_tc(i915, intel_encoder->port);
+		if (tc_port != PORT_TC_NONE)
+			seq_printf(m, "/TC#%d", tc_port + 1);
+		seq_printf(m, "\n");
+	}
+
 	switch (connector->connector_type) {
 	case DRM_MODE_CONNECTOR_DisplayPort:
 	case DRM_MODE_CONNECTOR_eDP:
--
2.22.1