drm/i915: Pass the region ID rather than a bitmask to HAS_REGION()

The name 'HAS_REGION()' suggests we are checking for a single
region, so seem more sensible to pass in the region ID rather
than a bitmask.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240502121423.1002-2-ville.syrjala@linux.intel.comReviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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

@@ -105,7 +105,7 @@ static int intel_gt_probe_lmem(struct intel_gt *gt)
 
 	intel_memory_region_set_name(mem, "local%u", mem->instance);
 
-	GEM_BUG_ON(!HAS_REGION(i915, BIT(id)));
+	GEM_BUG_ON(!HAS_REGION(i915, id));
 	GEM_BUG_ON(i915->mm.regions[id]);
 	i915->mm.regions[id] = mem;
 

drivers/gpu/drm/i915/i915_drv.h

@@ -757,8 +757,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
  */
 #define HAS_64K_PAGES(i915) (INTEL_INFO(i915)->has_64k_pages)
 
-#define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
-#define HAS_LMEM(i915) HAS_REGION(i915, REGION_LMEM)
+#define HAS_REGION(i915, id) (INTEL_INFO(i915)->memory_regions & BIT(id))
+#define HAS_LMEM(i915) HAS_REGION(i915, INTEL_REGION_LMEM_0)
 
 #define HAS_EXTRA_GT_LIST(i915)   (INTEL_INFO(i915)->extra_gt_list)
 

drivers/gpu/drm/i915/intel_memory_region.c

@@ -333,7 +333,7 @@ int intel_memory_regions_hw_probe(struct drm_i915_private *i915)
 		struct intel_memory_region *mem = ERR_PTR(-ENODEV);
 		u16 type, instance;
 
-		if (!HAS_REGION(i915, BIT(i)))
+		if (!HAS_REGION(i915, i))
 			continue;
 
 		type = intel_region_map[i].class;