[Buildroot] [PATCH 3/3] weston: add weston-imx variant when using imx-gpu-viv

[Gary Bisson <gary.bisson@boundarydevices.com>]

Hi Arnout,

On Wed, May 16, 2018 at 11:24:17PM +0200, Arnout Vandecappelle wrote:
> 
> 
> On 16-05-18 17:52, Gary Bisson wrote:
> > This variant contains various optimizations for i.MX processors.
> 
>  Argh, this is annoying...

Yeah I know, I felt the same way.

> > For instance, on i.MX6/7 devices with GPU, the gl-renderer needs to be
> > enabled for the fbdev-backend which was removed from upstream weston
> > long time ago.
> > 
> > Also, weston-imx adds support for G2D which is enabled by default, this
> > patch makes sure to disable it when imx-gpu-g2d isn't selected.
> > 
> > The tag version rel_imx_4.9.51_8mq_ga proved to work fine on both
> > i.MX6Q/DL and i.MX8MQ processors.
> > 
> > Here are the commands used to start weston on i.MX6Q:
> > - Using 3D GPU (gl-renderer):
> >  # weston --tty=1 --device=/dev/fb0
> > - Using 2D GPU (G2D):
> >  # weston --tty=1 --device=/dev/fb0 --use-g2d=1
> > 
> > Upstream repository:
> > https://source.codeaurora.org/external/imx/weston-imx/
> > 
> > Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
> > ---
> >  package/weston/weston.hash |  2 ++
> >  package/weston/weston.mk   | 15 +++++++++++++++
> >  2 files changed, 17 insertions(+)
> > 
> > diff --git a/package/weston/weston.hash b/package/weston/weston.hash
> > index 55d87ac3b1..c854e66cea 100644
> > --- a/package/weston/weston.hash
> > +++ b/package/weston/weston.hash
> > @@ -3,3 +3,5 @@ md5 33709aa4d5916f89643fca0fc0064b39  weston-4.0.0.tar.xz
> >  sha1 df1da4a880920c515162e95b18f3709a46690be7  weston-4.0.0.tar.xz
> >  sha256 a0fc0ae7ef83dfbed12abfe9b8096a24a7dd00705e86fa0db1e619ded18b4b58  weston-4.0.0.tar.xz
> >  sha512 0af41016ff4eae85779f95b5c5e44b9683f4ef681a8e52256efeebfa38073082b83e039d0db3c94ac22f22f8d8314c9d6cd16611144b260b353fc5bfdd1ded19  weston-4.0.0.tar.xz
> > +# locally computed
> > +sha256 0f0de7b7b1f65870139c95dde7abc19ed305631ae7c5d37c386db40cde108632  weston-rel_imx_4.9.51_8mq_ga.tar.gz
> > diff --git a/package/weston/weston.mk b/package/weston/weston.mk
> > index efe12bc01e..1248e4a6ef 100644
> > --- a/package/weston/weston.mk
> > +++ b/package/weston/weston.mk
> > @@ -4,9 +4,16 @@
> >  #
> >  ################################################################################
> >  
> > +ifeq ($(BR2_PACKAGE_IMX_GPU_VIV_OUTPUT_WL),y)
> 
>  It is not entirely impossible that people use Buildroot to generate a rootfs
> that should be able to boot on several CPUs, in which case they may not want to
> use the NXP fork of weston. So, I'd make an explicit Config.in option for this:
> 
> if BR2_PACKAGE_WESTON
> config BR2_PACKAGE_WESTON_IMX
> 	bool "weston-imx"
> 	default y
> 	depends on BR2_PACKAGE_IMX_GPU_VIV_OUTPUT_WL
> 	help
> 	  On i.MX6/7/8 platforms, a fork of weston can be used that enables
> 	  various optimisations for this platform. Blah blah blah.
> 
> 	  http://some-url-that-explains-it
> endif
> 
>  But maybe I'm exaggerating.

I'm ok with that approach too. I'll let the others comment before making
the V2.

Yann, Thomas, what do you prefer?

> > +WESTON_VERSION = rel_imx_4.9.51_8mq_ga
> > +WESTON_SITE = https://source.codeaurora.org/external/imx/weston-imx
> > +WESTON_SITE_METHOD = git
> > +WESTON_AUTORECONF = YES
> > +else
> >  WESTON_VERSION = 4.0.0
> >  WESTON_SITE = http://wayland.freedesktop.org/releases
> >  WESTON_SOURCE = weston-$(WESTON_VERSION).tar.xz
> > +endif
> >  WESTON_LICENSE = MIT
> >  WESTON_LICENSE_FILES = COPYING
> >  
> > @@ -50,6 +57,14 @@ else
> >  WESTON_CONF_OPTS += --disable-weston-launch
> >  endif
> >  
> > +ifeq ($(BR2_PACKAGE_IMX_GPU_VIV_OUTPUT_WL),y)
> > +ifeq ($(BR2_PACKAGE_IMX_GPU_G2D),y)
> 
> WESTON_CONF_OPTS += --enable-imxg2d

Ok, I forgot you wanted that --enable-xxx options to be explicit
although it ends up in the 'unrecognized options'.

>  With that:
>  Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

Thanks for the review. I'll add that in the V2 once it is decided what
to do about the config option.

Regards,
Gary