[yocto] [meta-raspberrypi][PATCH v2 00/13] Support for VC4 graphics driver

[Khem Raj]

> On May 20, 2016, at 4:51 AM, Herve Jourdain <herve.jourdain at neuf.fr> wrote:
> 
> This v2 series addresses the following issues with the first 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.

Looks good to me now.

> 
> This patch series depends on two other patch series previously posted, that enable the support for .dtbo overlay files.
> 
> Herve Jourdain (13):
>  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
>  firmware.inc: bump version 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-raspberrypi_4.4.bb: bump the kernel revision to 4.4.10 to
>    support vc4graphics
>  linux-rpi.inc: add the configuration options required to support
>    vc4graphics
> 
> 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-bsp/common/firmware.inc                |  4 ++--
> recipes-graphics/mesa/mesa_%.bbappend          |  4 ++++
> recipes-graphics/wayland/weston_%.bbappend     |  6 ++----
> recipes-graphics/weston/weston_%.bbappend      | 13 +++++++------
> recipes-kernel/linux/linux-raspberrypi_4.4.bb  |  4 ++--
> recipes-kernel/linux/linux-rpi.inc             | 10 ++++++++++
> 13 files changed, 49 insertions(+), 19 deletions(-)
> create mode 100644 recipes-graphics/mesa/mesa_%.bbappend
> 
> --
> 2.7.4
> 
> --
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