On Wed, Jan 20, 2021 at 06:00:30PM +0100, Noralf Trønnes wrote: > 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 The patch set: Tested-by: Lubomir Rintel <lkundrak@xxxxx> Works like a charm with this board [1], though it didn't impress the girls as much as I hoped. Code here [2], picture here [3]. [1] https://www.banggood.com/LILYGO-TTGO-T-Display-GD32-RISC-V-32-bit-Core-Minimal-Development-Board-1_14-IPS-p-1652870.html?rmmds=search&cur_warehouse=CN [2] https://github.com/hackerspace/libopencm3-gf32v-examples/commit/7ef51b31b9 [3] https://people.freedesktop.org/~lkundrak/lilygo.jpeg Had to apply a fix for the drm_connector_enum_list[] ommission I mentioned elsewhere, and that I've now noticed you've noted previously. Take care Lubo > > > 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 > > -- > 2.23.0 >
