drm/i915/uc: Add intel_uc_fw_type_repr()

Some of the DRM_NOTE messages are just using "uC" without specifying
which uc they are related to. We can be more user friendly.

v2: moved to the header (Joonas)
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/intel_uc.c

@@ -182,10 +182,12 @@ static void fetch_uc_fw(struct drm_i915_private *dev_priv,
 	}
 
 	if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) {
-		DRM_NOTE("Skipping uC firmware version check\n");
+		DRM_NOTE("Skipping %s firmware version check\n",
+			 intel_uc_fw_type_repr(uc_fw->type));
 	} else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
 		   uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
-		DRM_NOTE("uC firmware version %d.%d, required %d.%d\n",
+		DRM_NOTE("%s firmware version %d.%d, required %d.%d\n",
+			 intel_uc_fw_type_repr(uc_fw->type),
 			 uc_fw->major_ver_found, uc_fw->minor_ver_found,
 			 uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
 		err = -ENOEXEC;

drivers/gpu/drm/i915/intel_uc.h

@@ -125,6 +125,20 @@ enum intel_uc_fw_type {
 	INTEL_UC_FW_TYPE_HUC
 };
 
+/* User-friendly representation of an enum */
+static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
+{
+	switch (type) {
+	case INTEL_UC_FW_TYPE_GUC:
+		return "GuC";
+	case INTEL_UC_FW_TYPE_HUC:
+		return "HuC";
+	default:
+		MISSING_CASE(type);
+		return "<invalid>";
+	}
+}
+
 /*
  * This structure encapsulates all the data needed during the process
  * of fetching, caching, and loading the firmware image into the GuC.