Merge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.6:

UAPI Changes:

 * fbdev:
   * Make fbdev userspace interfaces optional; only leaves the
     framebuffer console active

 * prime:
   * Support dma-buf self-import for all drivers automatically: improves
     support for many userspace compositors

Cross-subsystem Changes:

 * backlight:
   * Fix interaction with fbdev in several drivers

 * base: Convert struct platform.remove to return void; part of a larger,
   tree-wide effort

 * dma-buf: Acquire reservation lock for mmap() in exporters; part
   of an on-going effort to simplify locking around dma-bufs

 * fbdev:
   * Use Linux device instead of fbdev device in many places
   * Use deferred-I/O helper macros in various drivers

 * i2c: Convert struct i2c from .probe_new to .probe; part of a larger,
   tree-wide effort

 * video:
   * Avoid including <linux/screen_info.h>

Core Changes:

 * atomic:
   * Improve logging

 * prime:
   * Remove struct drm_driver.gem_prime_mmap plus driver updates: all
     drivers now implement this callback with drm_gem_prime_mmap()

 * gem:
   * Support execution contexts: provides locking over multiple GEM
     objects

 * ttm:
   * Support init_on_free
   * Swapout fixes

Driver Changes:

 * accel:
   * ivpu: MMU updates; Support debugfs

 * ast:
   * Improve device-model detection
   * Cleanups

 * bridge:
   * dw-hdmi: Improve support for YUV420 bus format
   * dw-mipi-dsi: Fix enable/disable of DSI controller
   * lt9611uxc: Use MODULE_FIRMWARE()
   * ps8640: Remove broken EDID code
   * samsung-dsim: Fix command transfer
   * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups
   * Cleanups

 * ingenic:
   * Kconfig REGMAP fixes

 * loongson:
   * Support display controller

 * mgag200:
   * Minor fixes

 * mxsfb:
   * Support disabling overlay planes

 * nouveau:
   * Improve VRAM detection
   * Various fixes and cleanups

 * panel:
   * panel-edp: Support AUO B116XAB01.4
   * Support Visionox R66451 plus DT bindings
   * Cleanups

 * ssd130x:
   * Support per-controller default resolution plus DT bindings
   * Reduce memory-allocation overhead
   * Cleanups

 * tidss:
   * Support TI AM625 plus DT bindings
   * Implement new connector model plus driver updates

 * vkms
   * Improve write-back support
   * Documentation fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g

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