| From: |
| Thomas Zimmermann <tzimmermann-AT-suse.de> |
| To: |
| javierm-AT-redhat.com, airlied-AT-linux.ie, daniel-AT-ffwll.ch, deller-AT-gmx.de, maxime-AT-cerno.tech, sam-AT-ravnborg.org, msuchanek-AT-suse.de, mpe-AT-ellerman.id.au, benh-AT-kernel.crashing.org, paulus-AT-samba.org, geert-AT-linux-m68k.org, mark.cave-ayland-AT-ilande.co.uk |
| Subject: |
| [PATCH v2 00/10] drm: Add driver for PowerPC OF displays |
| Date: |
| Wed, 20 Jul 2022 16:27:22 +0200 |
| Message-ID: |
| <20220720142732.32041-1-tzimmermann@suse.de> |
| Cc: |
| linux-fbdev-AT-vger.kernel.org, linuxppc-dev-AT-lists.ozlabs.org, Thomas Zimmermann <tzimmermann-AT-suse.de>, dri-devel-AT-lists.freedesktop.org |
| Archive-link: |
| Article |
(was: drm: Add driverof PowerPC OF displays)
PowerPC's Open Firmware offers a simple display buffer for graphics
output. Add ofdrm, a DRM driver for the device. As with the existing
simpledrm driver, the graphics hardware is pre-initialized by the
firmware. The driver only provides blitting, no actual DRM modesetting
is possible.
Version 2 of this patchset starts by cleaning up and refactoring
simpledrm, and moving some of the code in a helper library. These
functions are useful for ofdrm as well.
Patch 7 adds ofdrm, which has been significantly reworked since v1.
PCI is now optional and COMPILE_TEST is supported.
Patches 8 to 10 add support for color management. The code has been
taken from fbdev's offb. I have no hardware available for testing the
functionality. Qemu's stdvga apparently does not support gamma tables
in RGB modes. I verified that the color management code is executed
by running Gnome's night-mode settings, but the display's color tone
does not change.
Thomas Zimmermann (10):
drm/simpledrm: Remove mem field from device structure
drm/simpledrm: Inline device-init helpers
drm/simpledrm: Remove pdev field from device structure
drm/simpledrm: Compute framebuffer stride if not set
drm/simpledrm: Convert to atomic helpers
drm/simpledrm: Move some functionality into fwfb helper library
drm/ofdrm: Add ofdrm for Open Firmware framebuffers
drm/ofdrm: Add CRTC state
drm/ofdrm: Add per-model device function
drm/ofdrm: Support color management
Documentation/gpu/drm-kms-helpers.rst | 12 +
MAINTAINERS | 3 +
drivers/gpu/drm/Kconfig | 6 +
drivers/gpu/drm/Makefile | 3 +-
drivers/gpu/drm/drm_fwfb_helper.c | 301 ++++++
drivers/gpu/drm/tiny/Kconfig | 15 +
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/ofdrm.c | 1301 +++++++++++++++++++++++++
drivers/gpu/drm/tiny/simpledrm.c | 588 +++++------
drivers/video/fbdev/Kconfig | 1 +
include/drm/drm_fwfb_helper.h | 51 +
11 files changed, 1949 insertions(+), 333 deletions(-)
create mode 100644 drivers/gpu/drm/drm_fwfb_helper.c
create mode 100644 drivers/gpu/drm/tiny/ofdrm.c
create mode 100644 include/drm/drm_fwfb_helper.h
--
2.36.1
