[PATCH v4 0/3] Generic USB Display driver

[Noralf Trønnes]

Hi,

A while back I had the idea to turn a Raspberry Pi Zero into a $5
USB to HDMI/SDTV/DSI/DPI display adapter.

The reason for calling it 'Generic' is so anyone can make a USB
display/adapter against this driver, all that's needed is to add a USB
vid:pid.

Unfortunately I've had some compounding health problems that have
severally limited the time I can spend in front of a computer. For this
reason I've decided to keep the gadget driver out-of-tree and focus on
getting the host driver merged first.

See the wiki[1] for more information and images for the Raspberry Pi
Zero/4.

One big change this time is that I've followed Peter Stuge's advice to
not let DRM stuff leak into the USB protocol. This has made the protocol
easier to understand just from reading the header file.

Noralf.

[1] https://github.com/notro/gud/wiki


Noralf Trønnes (3):
  drm/uapi: Add USB connector type
  drm/probe-helper: Check epoch counter in output_poll_execute()
  drm: Add Generic USB Display driver

 MAINTAINERS                         |   8 +
 drivers/gpu/drm/Kconfig             |   2 +
 drivers/gpu/drm/Makefile            |   1 +
 drivers/gpu/drm/drm_probe_helper.c  |   7 +-
 drivers/gpu/drm/gud/Kconfig         |  14 +
 drivers/gpu/drm/gud/Makefile        |   4 +
 drivers/gpu/drm/gud/gud_connector.c | 722 ++++++++++++++++++++++++++++
 drivers/gpu/drm/gud/gud_drv.c       | 620 ++++++++++++++++++++++++
 drivers/gpu/drm/gud/gud_internal.h  | 148 ++++++
 drivers/gpu/drm/gud/gud_pipe.c      | 472 ++++++++++++++++++
 include/drm/gud.h                   | 356 ++++++++++++++
 include/uapi/drm/drm_mode.h         |   1 +
 12 files changed, 2354 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/gud/Kconfig
 create mode 100644 drivers/gpu/drm/gud/Makefile
 create mode 100644 drivers/gpu/drm/gud/gud_connector.c
 create mode 100644 drivers/gpu/drm/gud/gud_drv.c
 create mode 100644 drivers/gpu/drm/gud/gud_internal.h
 create mode 100644 drivers/gpu/drm/gud/gud_pipe.c
 create mode 100644 include/drm/gud.h

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2.23.0