1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/fb_internal.h b/drivers/video/fbdev/core/fb_internal.h
new file mode 100644
index 000000000000..4c8d509a0026
--- /dev/null
+++ b/drivers/video/fbdev/core/fb_internal.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _FB_INTERNAL_H
+#define _FB_INTERNAL_H
+
+#include <linux/device.h>
+#include <linux/fb.h>
+#include <linux/mutex.h>
+
+/* fb_devfs.c */
+#if defined(CONFIG_FB_DEVICE)
+int fb_register_chrdev(void);
+void fb_unregister_chrdev(void);
+#else
+static inline int fb_register_chrdev(void)
+{
+	return 0;
+}
+static inline void fb_unregister_chrdev(void)
+{ }
+#endif
+
+/* fbmem.c */
+extern struct class *fb_class;
+extern struct mutex registration_lock;
+extern struct fb_info *registered_fb[FB_MAX];
+extern int num_registered_fb;
+struct fb_info *get_fb_info(unsigned int idx);
+void put_fb_info(struct fb_info *fb_info);
+
+/* fb_procfs.c */
+#if defined(CONFIG_FB_DEVICE)
+int fb_init_procfs(void);
+void fb_cleanup_procfs(void);
+#else
+static inline int fb_init_procfs(void)
+{
+	return 0;
+}
+static inline void fb_cleanup_procfs(void)
+{ }
+#endif
+
+/* fbsysfs.c */
+#if defined(CONFIG_FB_DEVICE)
+int fb_device_create(struct fb_info *fb_info);
+void fb_device_destroy(struct fb_info *fb_info);
+#else
+static inline int fb_device_create(struct fb_info *fb_info)
+{
+	/*
+	 * Acquire a reference on the parent device to avoid
+	 * unplug operations behind our back. With the fbdev
+	 * device enabled, this is performed within register_device().
+	 */
+	get_device(fb_info->device);
+
+	return 0;
+}
+static inline void fb_device_destroy(struct fb_info *fb_info)
+{
+	/* Undo the get_device() from fb_device_create() */
+	put_device(fb_info->device);
+}
+#endif
+
+#endif