[PATCH 04/10] drm/amd/display: Convert connector signal id to string

[Aurabindo Pillai]

From: Rodrigo Siqueira <rodrigo.siqueira at amd.com>

To improve the readability of the of the log, this commit introduces a
function that converts the signal type id to a human-readable string.

Reviewed-by: Jerry Zuo <jerry.zuo at amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira at amd.com>
---
 .../drm/amd/display/dc/link/link_factory.c    |  6 ++--
 .../drm/amd/display/include/signal_types.h    | 28 +++++++++++++++++++
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/link/link_factory.c b/drivers/gpu/drm/amd/display/dc/link/link_factory.c
index 1515c817f03b..ac1c3e2e7c1d 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_factory.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_factory.c
@@ -563,11 +563,9 @@ static bool construct_phy(struct dc_link *link,
 		goto create_fail;
 	}
 
-	/* TODO: #DAL3 Implement id to str function.*/
-	LINK_INFO("Connector[%d] description:"
-		  "signal %d\n",
+	LINK_INFO("Connector[%d] description: signal: %s\n",
 		  init_params->connector_index,
-		  link->connector_signal);
+		  signal_type_to_string(link->connector_signal));
 
 	ddc_service_init_data.ctx = link->ctx;
 	ddc_service_init_data.id = link->link_id;
diff --git a/drivers/gpu/drm/amd/display/include/signal_types.h b/drivers/gpu/drm/amd/display/include/signal_types.h
index 23a308c3eccb..325c5ba4c82a 100644
--- a/drivers/gpu/drm/amd/display/include/signal_types.h
+++ b/drivers/gpu/drm/amd/display/include/signal_types.h
@@ -44,6 +44,34 @@ enum signal_type {
 	SIGNAL_TYPE_VIRTUAL		= (1 << 9),	/* Virtual Display */
 };
 
+static inline const char *signal_type_to_string(const int type)
+{
+	switch (type) {
+	case SIGNAL_TYPE_NONE:
+		return "No signal";
+	case SIGNAL_TYPE_DVI_SINGLE_LINK:
+		return "DVI: Single Link";
+	case SIGNAL_TYPE_DVI_DUAL_LINK:
+		return "DVI: Dual Link";
+	case SIGNAL_TYPE_HDMI_TYPE_A:
+		return "HDMI: TYPE A";
+	case SIGNAL_TYPE_LVDS:
+		return "LVDS";
+	case SIGNAL_TYPE_RGB:
+		return "RGB";
+	case SIGNAL_TYPE_DISPLAY_PORT:
+		return "Display Port";
+	case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		return "Display Port: MST";
+	case SIGNAL_TYPE_EDP:
+		return "Embedded Display Port";
+	case SIGNAL_TYPE_VIRTUAL:
+		return "Virtual";
+	default:
+		return "Unknown";
+	}
+}
+
 /* help functions for signal types manipulation */
 static inline bool dc_is_hdmi_tmds_signal(enum signal_type signal)
 {
-- 
2.40.0