[v2,0/2] of: Register platform device for each framebuffer

Message

Thomas Zimmermann April 19, 2022, 10:04 a.m. UTC

Move the detection of OF framebuffers from fbdev into of platform code
and register a Linux platform device for each framebuffer. Allows for
DRM-based OF drivers and real hot-unplugging of the framebuffer.

This patchset has been tested with qemu's ppc64le emulation, which
provides a framebuffer via OF display node. If someone has an older
32-bit system with BootX available, please test.

v2:
	* integrate PPC code into generic platform setup (Rob)
	* keep !device workaround with a warning (Javier, Daniel)

Thomas Zimmermann (2):
  of: Create platform devices for OF framebuffers
  fbdev: Warn in hot-unplug workaround for framebuffers without device

 drivers/of/platform.c            | 88 +++++++++++++++++++++-------
 drivers/video/fbdev/core/fbmem.c | 10 ++--
 drivers/video/fbdev/offb.c       | 98 +++++++++++++++++++++-----------
 3 files changed, 136 insertions(+), 60 deletions(-)


base-commit: d97978df553d768e457cb68c637b2b0a6188b87c
prerequisite-patch-id: c2b2f08f0eccc9f5df0c0da49fa1d36267deb11d
prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24
prerequisite-patch-id: 6e1032c6302461624f33194c8b8f37103a3fa6ef
prerequisite-patch-id: 3f204510fcbf9530d6540bd8e6128cce598988b6
prerequisite-patch-id: ab7611d28d07723ab1dd392dcf9a6345de3b1040