drm/i915: Introduce gt_init_mmio

We already call 2 gt-related init_mmio functions in driver_mmio_probe
and a 3rd one will be added by a follow-up patch, so pre-emptively
introduce a gt_init_mmio function to group them.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200708003952.21831-6-daniele.ceraolospurio@intel.com

drivers/gpu/drm/i915/gt/intel_gt.c

@@ -44,6 +44,13 @@ void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt)
 	gt->ggtt = ggtt;
 }
 
+int intel_gt_init_mmio(struct intel_gt *gt)
+{
+	intel_uc_init_mmio(&gt->uc);
+
+	return intel_engines_init_mmio(gt);
+}
+
 static void init_unused_ring(struct intel_gt *gt, u32 base)
 {
 	struct intel_uncore *uncore = gt->uncore;

drivers/gpu/drm/i915/gt/intel_gt.h

@@ -36,6 +36,7 @@ static inline struct intel_gt *huc_to_gt(struct intel_huc *huc)
 
 void intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915);
 void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt);
+int intel_gt_init_mmio(struct intel_gt *gt);
 int __must_check intel_gt_init_hw(struct intel_gt *gt);
 int intel_gt_init(struct intel_gt *gt);
 void intel_gt_driver_register(struct intel_gt *gt);

drivers/gpu/drm/i915/i915_drv.c

@@ -531,9 +531,7 @@ static int i915_driver_mmio_probe(struct drm_i915_private *dev_priv)
 	/* Try to make sure MCHBAR is enabled before poking at it */
 	intel_setup_mchbar(dev_priv);
 
-	intel_uc_init_mmio(&dev_priv->gt.uc);
-
-	ret = intel_engines_init_mmio(&dev_priv->gt);
+	ret = intel_gt_init_mmio(&dev_priv->gt);
 	if (ret)
 		goto err_uncore;