Hi Am 20.01.21 um 18:00 schrieb 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.
Well, I'd strongly ask to not call it "generic", because it isn't. We have other USB drivers and anyone can make a USB display with these protocols as well. That doesn't make them generic. A USB-standardized protocol would be generic. Maybe call it custom, or home-made.
Best regards Thomas
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
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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