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

["Andreas Müller" <schnitzeltony@googlemail.com>]

On Sun, Jul 31, 2016 at 9:56 PM, Khem Raj <raj.khem@gmail.com> wrote:
> On Jul 31, 2016 12:54 PM, "Andrei Gherzan" <andrei@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@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
>>
>> --
>> _______________________________________________
>> yocto mailing list
>> yocto@yoctoproject.org
>> https://lists.yoctoproject.org/listinfo/yocto
>>
>
If I am not mistaken, dtbo patch is now in oe-core.

Andreas