drm/i915/hdcp: Move checks for gsc health status

Move checks for gsc components required for HDCP 2.2
to work into intel_hdcp_gsc.c. This will also help
with XE refactor on HDCP's side.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009095537.653619-2-suraj.kandpal@intel.com

Author: surajk8

drivers/gpu/drm/i915/display/intel_hdcp.c

@@ -173,14 +173,8 @@ bool intel_hdcp2_capable(struct intel_connector *connector)
 
 	/* If MTL+ make sure gsc is loaded and proxy is setup */
 	if (intel_hdcp_gsc_cs_required(i915)) {
-		struct intel_gt *gt = i915->media_gt;
-		struct intel_gsc_uc *gsc = gt ? &gt->uc.gsc : NULL;
-
-		if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) {
-			drm_dbg_kms(&i915->drm,
-				    "GSC components required for HDCP2.2 are not ready\n");
+		if (!intel_hdcp_gsc_check_status(i915))
 			return false;
-		}
 	}
 
 	/* MEI/GSC interface is solid depending on which is used */

drivers/gpu/drm/i915/display/intel_hdcp_gsc.c

@@ -17,6 +17,20 @@ bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915)
 	return DISPLAY_VER(i915) >= 14;
 }
 
+bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915)
+{
+	struct intel_gt *gt = i915->media_gt;
+	struct intel_gsc_uc *gsc = gt ? &gt->uc.gsc : NULL;
+
+	if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) {
+		drm_dbg_kms(&i915->drm,
+			    "GSC components required for HDCP2.2 are not ready\n");
+		return false;
+	}
+
+	return true;
+}
+
 static int
 gsc_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
 			  struct hdcp2_ake_init *ake_data)

drivers/gpu/drm/i915/display/intel_hdcp_gsc.h

@@ -23,5 +23,6 @@ ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in,
 				size_t msg_out_len);
 int intel_hdcp_gsc_init(struct drm_i915_private *i915);
 void intel_hdcp_gsc_fini(struct drm_i915_private *i915);
+bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915);
 
 #endif /* __INTEL_HDCP_GCS_H__ */