drm/exynos: Introduce GEM object functions

GEM object functions deprecate several similar callback interfaces in
struct drm_driver. This patch replaces the per-driver callbacks with
per-instance callbacks in exynos. The only exception is gem_prime_mmap,
which is non-trivial to convert.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200923102159.24084-5-tzimmermann@suse.de

drivers/gpu/drm/exynos/exynos_drm_drv.c

@@ -75,11 +75,6 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 	file->driver_priv = NULL;
 }
 
-static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
-	.open = drm_gem_vm_open,
-	.close = drm_gem_vm_close,
-};
-
 static const struct drm_ioctl_desc exynos_ioctls[] = {
 	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 			DRM_RENDER_ALLOW),
@@ -124,16 +119,11 @@ static struct drm_driver exynos_drm_driver = {
 	.open			= exynos_drm_open,
 	.lastclose		= drm_fb_helper_lastclose,
 	.postclose		= exynos_drm_postclose,
-	.gem_free_object_unlocked = exynos_drm_gem_free_object,
-	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
 	.dumb_create		= exynos_drm_gem_dumb_create,
 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
 	.gem_prime_import	= exynos_drm_gem_prime_import,
-	.gem_prime_get_sg_table	= exynos_drm_gem_prime_get_sg_table,
 	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
-	.gem_prime_vmap		= exynos_drm_gem_prime_vmap,
-	.gem_prime_vunmap	= exynos_drm_gem_prime_vunmap,
 	.gem_prime_mmap		= exynos_drm_gem_prime_mmap,
 	.ioctls			= exynos_ioctls,
 	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),

drivers/gpu/drm/exynos/exynos_drm_gem.c

@@ -129,6 +129,19 @@ void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem)
 	kfree(exynos_gem);
 }
 
+static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+
+static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = {
+	.free = exynos_drm_gem_free_object,
+	.get_sg_table = exynos_drm_gem_prime_get_sg_table,
+	.vmap = exynos_drm_gem_prime_vmap,
+	.vunmap	= exynos_drm_gem_prime_vunmap,
+	.vm_ops = &exynos_drm_gem_vm_ops,
+};
+
 static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev,
 						  unsigned long size)
 {
@@ -143,6 +156,8 @@ static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev,
 	exynos_gem->size = size;
 	obj = &exynos_gem->base;
 
+	obj->funcs = &exynos_drm_gem_object_funcs;
+
 	ret = drm_gem_object_init(dev, obj, size);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dev->dev, "failed to initialize gem object\n");