Merge tag 'drm-intel-next-2018-09-06-2' of git://anongit.freedesktop.org/drm/drm...

[platform/kernel/linux-rpi.git] / drivers / gpu / drm / i915 / intel_display.h

diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index 43f080c..e20e6a3 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -142,6 +142,30 @@ enum port {
 
 #define port_name(p) ((p) + 'A')
 
+/*
+ * Ports identifier referenced from other drivers.
+ * Expected to remain stable over time
+ */
+static inline const char *port_identifier(enum port port)
+{
+       switch (port) {
+       case PORT_A:
+               return "Port A";
+       case PORT_B:
+               return "Port B";
+       case PORT_C:
+               return "Port C";
+       case PORT_D:
+               return "Port D";
+       case PORT_E:
+               return "Port E";
+       case PORT_F:
+               return "Port F";
+       default:
+               return "<invalid>";
+       }
+}
+
 enum tc_port {
        PORT_TC_NONE = -1,