[yocto] [meta-raspberrypi][PATCH v4 00/12] Support for VC4 graphics driver

[Khem Raj]

On Jul 31, 2016 12:54 PM, "Andrei Gherzan" <andrei at gherzan.ro> wrote:
>
> On Thu, Jul 21, 2016 at 08:32:05PM +0800, Herve Jourdain wrote:
> > v4 series:
> > a. rebased
> > b. Upstream-Status added to the patch to the VC4 driver (needed only
for kernel 4.4, accepted upstream in 4.7)
> >
> > v3 series:
> > a. patch rebased
> > b. new revision of kernel, to get a version of the VC4 graphics driver
that handles render nodes
> > c. patch to the VC4 driver to enable proper working of the render nodes
(need to add authorization for IOCTLs)
> >
> > v2 series:
> > a. Fix the 4.4.10 kernel revision
> > b. Effectively add vc4-kms-v3d overlay to the list of overlays to build
(forgotten previously)
> > c. Make the parameter to the v4c-kms-v3d overlay configurable
> > d. Add default values for the cma parameter to the v4c-kms-v3d overlay,
depending on the board (and the memory it has)
> >
> > This patch series enables the support for the VC4 graphics driver from
Eric Anholt.
> > There was a previous patch series by Javier Martinez Canillas, but it
required use of a different kernel.
> > VC4 is now supported in the raspberrypi official kernel, at least for
4.4.9+.
> > The support in 4.1 exists, but it is NOT STABLE, so it has been deemed
unreasonable to support VC4 with 4.1 kernels.
> >
> > THEREFORE, VC4 graphics is supported ONLY for kernel versions 4.4.9 and
later.
> >
> > This patch series proposes to support VC4 by only adding 'vc4graphics'
to MACHINE_FEATURES, for raspberrypi. If this is set, it will trigger all
the necessary configuration/changes to use the VC4 driver, including
mesa/wayland/weston currently, and adding the overlay required.
> > In order for this series to work, some previous patches are needed
(support for .dtbo, and fix of the mesa packaging when there is no DRI
driver).
> > The memory reserved for the VC4 driver has default values depending on
the version of the board used, but it can be configured by setting
VC4_CMA_SIZE to a value supported by the overlay ('cma-256', 'cma-192',
'cma-128', 'cma-96', 'cma-64').
> > 'cma-256' is the recommended value, but it might not be possible on
boards with 512MB or DRAM, or less...
> > 'cma-64' is known to not being able to support FHD/1080p.
> >
> > It was tested with wayland/weston, without the support for X11.
> >
> > This patch series depends on two other patch series previously posted,
that enable the support for .dtbo overlay files.
> >
> > Herve Jourdain (12):
> >   rpi-default-providers.inc: change default providers to support
> >     vc4graphics
> >   rpi-base.inc: add vc4-kms-v3d to the overlays to support vc4graphics
> >   raspberrypi.conf: set the default value of VC4_CMA_SIZE to support
> >     vc4graphics
> >   raspberrypi0.conf: set the default value of VC4_CMA_SIZE to support
> >     vc4graphics
> >   raspberrypi2.conf: set the default value of VC4_CMA_SIZE to support
> >     vc4graphics
> >   raspberrypi3.conf: set the default value of VC4_CMA_SIZE to support
> >     vc4graphics
> >   rpi-config_git.bb: add v4c overlay to config.txt to support
> >     vc4graphics
> >   wayland/weston_%.bbappend: modify configuration options to support
> >     vc4graphics
> >   weston/weston_%.bbappend: modify configuration options to support
> >     vc4graphics
> >   mesa_%.bbappend: new file to add the correct configuration options to
> >     support vc4graphics
> >   linux-rpi.inc: add the configuration options required to support
> >     vc4graphics
> >   linux-raspberrypi-4.4: add patch to enable proper operation of
> >     renderD128 device
> >
> >  conf/machine/include/rpi-base.inc                  |  1 +
> >  conf/machine/include/rpi-default-providers.inc     |  8 +++---
> >  conf/machine/raspberrypi.conf                      |  2 ++
> >  conf/machine/raspberrypi0.conf                     |  2 ++
> >  conf/machine/raspberrypi2.conf                     |  2 ++
> >  conf/machine/raspberrypi3.conf                     |  2 ++
> >  recipes-bsp/bootfiles/rpi-config_git.bb            | 10 +++++++-
> >  recipes-graphics/mesa/mesa_%.bbappend              |  4 +++
> >  recipes-graphics/wayland/weston_%.bbappend         |  6 ++---
> >  recipes-graphics/weston/weston_%.bbappend          | 13 +++++-----
> >  .../0002-vc4-ioctl-rendering-allow.patch           | 29
++++++++++++++++++++++
> >  recipes-kernel/linux/linux-raspberrypi_4.4.bb      |  1 +
> >  recipes-kernel/linux/linux-rpi.inc                 | 10 ++++++++
> >  13 files changed, 75 insertions(+), 15 deletions(-)
> >  create mode 100644 recipes-graphics/mesa/mesa_%.bbappend
> >  create mode 100644
recipes-kernel/linux/linux-raspberrypi-4.4/0002-vc4-ioctl-rendering-allow.patch
> >
> > --
> > 2.7.4
> >
> > --
> > _______________________________________________
> > yocto mailing list
> > yocto at yoctoproject.org
> > https://lists.yoctoproject.org/listinfo/yocto
>
> I would have wanted to merge this but they depend on dtbo support which
> doesn't have the required bits in oe.core. So I can't merge this until
> that lands in oe-core.

Let's wait for few days. I have staged it in my guthub tree. Until then
>
> Regards,
>
> --
> Andrei Gherzan
>
> --
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> yocto at yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>
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