drm/tegra: Fix aperture support for Linux v6.13

In Linux v6.13, commit 689274a56c0c ("drm: Remove DRM aperture helpers")
removed the DRM aperture helper functions and drivers should simply use
the existing video helpers. Update the Tegra DRM driver to use
aperture_remove_all_conflicting_devices() if available to align with
upstream.

Bug 4991705

Change-Id: Ie4b78a4ea519ffcaaf972417ec2cbe7c436eb808
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3261694
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>

drivers/gpu/drm/tegra/drm.c

@@ -16,7 +16,11 @@
 #include <linux/pm_runtime.h>
 #include <linux/version.h>
 
+#if defined(NV_APERTURE_REMOVE_ALL_CONFLICTING_DEVICES_PRESENT) /* Linux v6.0 */
+#include <linux/aperture.h>
+#else
 #include <drm/drm_aperture.h>
+#endif
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_debugfs.h>
@@ -1315,7 +1319,9 @@ static int host1x_drm_probe(struct host1x_device *dev)
 	drm_mode_config_reset(drm);
 
 	if (drm->mode_config.num_crtc > 0) {
-#if defined(NV_DRM_APERTURE_REMOVE_FRAMEBUFFERS_HAS_NO_PRIMARY_ARG) /* Linux v6.5 */
+#if defined(NV_APERTURE_REMOVE_ALL_CONFLICTING_DEVICES_PRESENT) /* Linux v6.0 */
+		err = aperture_remove_all_conflicting_devices(tegra_drm_driver.name);
+#elif defined(NV_DRM_APERTURE_REMOVE_FRAMEBUFFERS_HAS_NO_PRIMARY_ARG) /* Linux v6.5 */
 		err = drm_aperture_remove_framebuffers(&tegra_drm_driver);
 #elif defined(NV_DRM_APERTURE_REMOVE_FRAMEBUFFERS_HAS_DRM_DRIVER_ARG) /* Linux v5.15 */
 		err = drm_aperture_remove_framebuffers(false, &tegra_drm_driver);

scripts/conftest/Makefile

@@ -90,6 +90,7 @@ endef
 
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += __alloc_disk_node_has_lkclass_arg
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += __assign_str_has_no_src_arg
+NV_CONFTEST_FUNCTION_COMPILE_TESTS += aperture_remove_all_conflicting_devices
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_execute_rq_has_no_gendisk_arg
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_mq_alloc_disk_for_queue
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_mq_alloc_queue
@@ -244,6 +245,7 @@ NV_HEADER_PRESENCE_TESTS = \
   drm/drm_dp_aux_bus.h \
   drm/drm_eld.h \
   generated/autoconf.h \
+  linux/aperture.h \
   linux/kconfig.h \
   linux/iosys-map.h \
   linux/tegra_prod.h \

scripts/conftest/conftest.sh

@@ -6534,6 +6534,28 @@ compile_test() {
             compile_check_conftest "$CODE" "NV___ALLOC_DISK_NODE_HAS_LKCLASS_ARG" "" "types"
         ;;
 
+        aperture_remove_all_conflicting_devices)
+            #
+            # Determine if the function aperture_remove_all_conflicting_devices()
+            # is present.
+            #
+            # In Linux v6.0, commit 7283f862bd99 ("drm: Implement DRM aperture
+            # helpers under video/") added the function
+            # aperture_remove_all_conflicting_devices().
+            #
+            CODE="
+            #if defined(NV_LINUX_APERTURE_H_PRESENT)
+            #include <linux/aperture.h>
+            #else
+            #error \"linux/aperture.h not found!\"
+            #endif
+            void conftest_aperture_remove_all_conflicting_devices(const char *name) {
+                aperture_remove_all_conflicting_devices(name);
+            }"
+
+            compile_check_conftest "$CODE" "NV_APERTURE_REMOVE_ALL_CONFLICTING_DEVICES_PRESENT" "" "types"
+        ;;
+
         blk_execute_rq_has_no_gendisk_arg)
             #
             # Determine if the function blk_execute_rq() has an argument of