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From: "Noralf Trønnes" <noralf@tronnes.org>
To: dri-devel@lists.freedesktop.org
Cc: linux-usb@vger.kernel.org, sam@ravnborg.org, peter@stuge.se,
	lkundrak@v3.sk, markus@raatikainen.cc, pontus.fuchs@gmail.com,
	hudson@trmm.net, th020394@gmail.com,
	"Noralf Trønnes" <noralf@tronnes.org>
Subject: [PATCH v7 0/3] GUD USB Display driver
Date: Fri,  5 Mar 2021 17:31:01 +0100	[thread overview]
Message-ID: <20210305163104.30756-1-noralf@tronnes.org> (raw)

Hi,

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

The protocol is open so people are free to make displays implementing it and
use this driver, all that's needed is to add a USB vid:pid to the driver for
the display.

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

Changes in this version:
- LZ4_compress_default() can return zero, check for that
- Fix memory leak in gud_pipe_check() error path (Peter)
- Improve debug and error messages (Peter)
- Don't pass length in protocol structs (Peter)
- Pass USB interface to gud_usb_control_msg() et al. (Peter)
- Improve gud_connector_fill_properties() (Peter)
- Add GUD_PIXEL_FORMAT_RGB111 (Peter)
- Remove GUD_REQ_SET_VERSION (Peter)
- Fix DRM_IOCTL_MODE_OBJ_SETPROPERTY and the rotation property
- Fix dma-buf import (Thomas)

Note: There are several changes to the protocol.

I plan to apply the patches in a week or so unless something turns out to be
broken.

Dependency:
drm: Use USB controller's DMA mask when importing dmabufs[2]
(currently in drm-misc-fixes but not in drm-misc-next yet, also present in
drm-tip and linux-next)

Noralf.

[1] https://github.com/notro/gud/wiki
[2] https://patchwork.freedesktop.org/patch/msgid/20210303133229.3288-1-tzimmermann@suse.de


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

 MAINTAINERS                         |   8 +
 drivers/gpu/drm/Kconfig             |   2 +
 drivers/gpu/drm/Makefile            |   1 +
 drivers/gpu/drm/drm_connector.c     |   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 | 729 ++++++++++++++++++++++++++++
 drivers/gpu/drm/gud/gud_drv.c       | 659 +++++++++++++++++++++++++
 drivers/gpu/drm/gud/gud_internal.h  | 154 ++++++
 drivers/gpu/drm/gud/gud_pipe.c      | 535 ++++++++++++++++++++
 include/drm/gud.h                   | 333 +++++++++++++
 include/uapi/drm/drm_mode.h         |   1 +
 13 files changed, 2447 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


             reply	other threads:[~2021-03-05 16:32 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-05 16:31 Noralf Trønnes [this message]
2021-03-05 16:31 ` [PATCH v7 1/3] drm/uapi: Add USB connector type Noralf Trønnes
2021-03-05 16:31 ` [PATCH v7 2/3] drm/probe-helper: Check epoch counter in output_poll_execute() Noralf Trønnes
2021-03-05 16:31 ` [PATCH v7 3/3] drm: Add GUD USB Display driver Noralf Trønnes
2021-03-08 18:13   ` Noralf Trønnes
2021-03-09 14:02   ` Peter Stuge
2021-03-09 18:07     ` Noralf Trønnes
2021-03-09 18:16       ` Noralf Trønnes
2021-03-10  4:55       ` Peter Stuge
2021-03-10 11:43         ` Noralf Trønnes
2021-03-11 14:48           ` Peter Stuge
2021-03-11 17:16             ` Noralf Trønnes
2021-03-11 20:02               ` Peter Stuge
2021-03-11 21:36                 ` Ilia Mirkin
2021-03-11 22:57                   ` Peter Stuge
2021-03-12  0:19                     ` Ilia Mirkin
2021-03-12  4:32                       ` Peter Stuge
2021-03-12 11:53                         ` Noralf Trønnes

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