Merge tag 'fbdev-v4.20' of https://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "No major changes to the subsystem itself, mainly fb drivers fixes &
  cleanups (atyfb & udlfb updates stand out from the rest) + removal of
  no longer needed old clps711xfb driver.

  Details:

   - update atyfb driver - improvements for ATI Mach64 chips: detect the
     dot clock divider correctly on Sparc, fix display corruptions (due
     to endianness issues and improper reading of accelerator
     registers), optimize scrolling performance and also fix debugging
     printks (Mikulas Patocka)

   - rewrite USB unplug handling in udlfb driver using framebuffer
     subsystem reference counting (Mikulas Patocka)

   - fix support for native-mode display-timings in atmel_lcdfb driver
     (Sam Ravnborg)

   - fix information leak & add missing access_ok() checks in sbuslib
     (Dan Carpenter)

   - allow using GPIO expanders that can sleep in ssd1307fb driver
     (Michal Vokáč)

   - convert omapfb driver to use GPIO descriptors instead of GPIO
     numbers for Amstrad Delta board (Janusz Krzysztofik)

   - fix broken Kconfig menu dependencies (Randy Dunlap)

   - convert fbdev subsystem to use %pOFn instead of device_node.name
     (Rob Herring)

   - remove the dead old CLPS711x LCD support driver (the new CLPS711x
     LCD support driver is still available)

   - misc fixes (Jia-Ju Bai, Gustavo A. R. Silva)

   - misc cleanups (Mehdi Bounya, Nathan Chancellor, YueHaibing)"

* tag 'fbdev-v4.20' of https://github.com/bzolnier/linux: (22 commits)
  video: fbdev: remove redundant 'default n' from Kconfig-s
  video: fbdev: remove dead old CLPS711x LCD support driver
  Revert "video: ssd1307fb: Do not hard code active-low reset sequence"
  video: fbdev: arcfb: mark expected switch fall-through
  pxa168fb: remove set but not used variables 'mi'
  video: ssd1307fb: Do not hard code active-low reset sequence
  video: ssd1307fb: Use gpiod_set_value_cansleep() for reset
  fbdev: fix broken menu dependencies
  video: fbdev: sis: Remove unnecessary parentheses and commented code
  video: fbdev: omapfb: lcd_ams_delta: use GPIO lookup table
  fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper()
  fbdev: sbuslib: use checked version of put_user()
  fbdev: Convert to using %pOFn instead of device_node.name
  atmel_lcdfb: support native-mode display-timings
  Video: vgastate: fixed a spacing coding style
  atyfb: fix debugging printks
  mach64: optimize wait_for_fifo
  mach64: fix image corruption due to reading accelerator registers
  mach64: fix display corruption on big endian machines
  mach64: detect the dot clock divider correctly on sparc
  ...

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