| Message ID | 20191017074705.9140-2-tzimmermann@suse.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | DRM fbconv helpers for converting fbdev drivers | expand |
On Thu, Oct 17, 2019 at 09:47:05AM +0200, Thomas Zimmermann wrote: > The DRM TODO list now contains an entry for converting fbdev > drivers over to DRM. > > Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> > --- > Documentation/gpu/todo.rst | 27 +++++++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > > diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst > index 79785559d711..23b3a67794ba 100644 > --- a/Documentation/gpu/todo.rst > +++ b/Documentation/gpu/todo.rst > @@ -462,3 +462,30 @@ Contact: Sam Ravnborg > > Outside DRM > =========== > + > +Convert fbdev drivers to DRM > +---------------------------- > + > +There are plenty of fbdev drivers for older hardware. Some hwardware has > +become obsolete, but some still provides good(-enough) framebuffers. The > +drivers that are still useful should be converted to DRM and afterwards > +removed from fbdev. > + > +Very simple fbdev drivers can best be converted by starting with a new > +DRM driver. Simple KMS helpers and SHMEM should be able to handle any > +existing hardware. The new driver's call-back functions are filled from > +existing fbdev code. > + > +More complex fbdev drivers can be refactored step-by-step into a DRM > +driver with the help of the DRM fbconv helpers. [1] These helpers provide > +the transition layer between the DRM core infrastructure and the fbdev > +driver interface. Create a new DRM driver on top of the fbconv helpers, > +copy over the fbdev driver, and hook it up to the DRM code. Examples for > +several fbdev drivers are available at [1] and a tutorial of this process > +available at [2]. The result is a primitive DRM driver that can run X11 > +and Weston. > + > + - [1] https://gitlab.freedesktop.org/tzimmermann/linux/tree/fbconv > + - [2] https://gitlab.freedesktop.org/tzimmermann/linux/blob/fbconv/drivers/gpu/drm/drm_fbconv_helper.c btw if you want to push a patch to get this built and published: https://gitlab.freedesktop.org/drm/igt-gpu-tools/blob/master/.gitlab-ci.yml The "pages" job is the one which gets published to https://drm.pages.freedesktop.org/igt-gpu-tools/ With that you could point at the pretty hmtl even. -Daniel > + > +Contact: Thomas Zimmermann <tzimmermann@suse.de> > -- > 2.23.0 >
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 79785559d711..23b3a67794ba 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -462,3 +462,30 @@ Contact: Sam Ravnborg Outside DRM =========== + +Convert fbdev drivers to DRM +---------------------------- + +There are plenty of fbdev drivers for older hardware. Some hwardware has +become obsolete, but some still provides good(-enough) framebuffers. The +drivers that are still useful should be converted to DRM and afterwards +removed from fbdev. + +Very simple fbdev drivers can best be converted by starting with a new +DRM driver. Simple KMS helpers and SHMEM should be able to handle any +existing hardware. The new driver's call-back functions are filled from +existing fbdev code. + +More complex fbdev drivers can be refactored step-by-step into a DRM +driver with the help of the DRM fbconv helpers. [1] These helpers provide +the transition layer between the DRM core infrastructure and the fbdev +driver interface. Create a new DRM driver on top of the fbconv helpers, +copy over the fbdev driver, and hook it up to the DRM code. Examples for +several fbdev drivers are available at [1] and a tutorial of this process +available at [2]. The result is a primitive DRM driver that can run X11 +and Weston. + + - [1] https://gitlab.freedesktop.org/tzimmermann/linux/tree/fbconv + - [2] https://gitlab.freedesktop.org/tzimmermann/linux/blob/fbconv/drivers/gpu/drm/drm_fbconv_helper.c + +Contact: Thomas Zimmermann <tzimmermann@suse.de>
The DRM TODO list now contains an entry for converting fbdev drivers over to DRM. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> --- Documentation/gpu/todo.rst | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)