drm/i915: Replace i915->gt0 with to_gt(i915)

Quite surprised to see that around i915 there are still i915->gt0
references. Replace them with the to_gt() helper.
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725103330.1041394-1-andi.shyti@linux.intel.com

drivers/gpu/drm/i915/gem/i915_gem_stolen.c

@@ -892,7 +892,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
 	} else {
 		resource_size_t lmem_range;
 
-		lmem_range = intel_gt_mcr_read_any(&i915->gt0, XEHP_TILE0_ADDR_RANGE) & 0xFFFF;
+		lmem_range = intel_gt_mcr_read_any(to_gt(i915), XEHP_TILE0_ADDR_RANGE) & 0xFFFF;
 		lmem_size = lmem_range >> XEHP_TILE_LMEM_RANGE_SHIFT;
 		lmem_size *= SZ_1G;
 	}

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

@@ -887,7 +887,7 @@ static int intel_gt_tile_setup(struct intel_gt *gt, phys_addr_t phys_addr)
 int intel_gt_probe_all(struct drm_i915_private *i915)
 {
 	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
-	struct intel_gt *gt = &i915->gt0;
+	struct intel_gt *gt = to_gt(i915);
 	const struct intel_gt_definition *gtdef;
 	phys_addr_t phys_addr;
 	unsigned int mmio_bar;

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

@@ -220,7 +220,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
 		resource_size_t lmem_range;
 		u64 tile_stolen, flat_ccs_base;
 
-		lmem_range = intel_gt_mcr_read_any(&i915->gt0, XEHP_TILE0_ADDR_RANGE) & 0xFFFF;
+		lmem_range = intel_gt_mcr_read_any(to_gt(i915), XEHP_TILE0_ADDR_RANGE) & 0xFFFF;
 		lmem_size = lmem_range >> XEHP_TILE_LMEM_RANGE_SHIFT;
 		lmem_size *= SZ_1G;
 

drivers/gpu/drm/i915/pxp/intel_pxp.c

@@ -162,8 +162,8 @@ static struct intel_gt *find_gt_for_required_teelink(struct drm_i915_private *i9
 	 * for HuC authentication. For now, its limited to DG2.
 	 */
 	if (IS_ENABLED(CONFIG_INTEL_MEI_PXP) && IS_ENABLED(CONFIG_INTEL_MEI_GSC) &&
-	    intel_huc_is_loaded_by_gsc(&i915->gt0.uc.huc) && intel_uc_uses_huc(&i915->gt0.uc))
-		return &i915->gt0;
+	    intel_huc_is_loaded_by_gsc(&to_gt(i915)->uc.huc) && intel_uc_uses_huc(&to_gt(i915)->uc))
+		return to_gt(i915);
 
 	return NULL;
 }
@@ -188,8 +188,8 @@ static struct intel_gt *find_gt_for_required_protected_content(struct drm_i915_p
 	 * Else we rely on mei-pxp module but only on legacy platforms
 	 * prior to having separate media GTs and has a valid VDBOX.
 	 */
-	if (IS_ENABLED(CONFIG_INTEL_MEI_PXP) && !i915->media_gt && VDBOX_MASK(&i915->gt0))
-		return &i915->gt0;
+	if (IS_ENABLED(CONFIG_INTEL_MEI_PXP) && !i915->media_gt && VDBOX_MASK(to_gt(i915)))
+		return to_gt(i915);
 
 	return NULL;
 }

drivers/gpu/drm/i915/selftests/mock_gem_device.c

@@ -113,7 +113,7 @@ static struct dev_pm_domain pm_domain = {
 
 static void mock_gt_probe(struct drm_i915_private *i915)
 {
-	i915->gt[0] = &i915->gt0;
+	i915->gt[0] = to_gt(i915);
 	i915->gt[0]->name = "Mock GT";
 }