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

[Khem Raj]

> On Jul 21, 2016, at 5:32 AM, Herve Jourdain <herve.jourdain at neuf.fr> 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.

I have staged this series into

https://github.com/kraj/meta-raspberrypi kraj/master

> 
> 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
> 
> --
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