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

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

This variant contains various optimizations for i.MX processors.

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 ($(BR2_PACKAGE_IMX_GPU_VIV_OUTPUT_WL),y)
+WESTON_VERSION = rel_imx_4.9.51_8mq_ga
+WESTON_SITE = https://source.codeaurora.org/external/imx/weston-imx
+WESTON_SITE_METHOD = git
+WESTON_AUTORECONF = YES
+else
 WESTON_VERSION = 4.0.0
 WESTON_SITE = http://wayland.freedesktop.org/releases
 WESTON_SOURCE = weston-$(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_DEPENDENCIES += imx-gpu-g2d
+else
+WESTON_CONF_OPTS += --disable-imxg2d
+endif
+endif
+
 ifeq ($(BR2_PACKAGE_HAS_LIBEGL_WAYLAND),y)
 WESTON_CONF_OPTS += --enable-egl
 WESTON_DEPENDENCIES += libegl
-- 
2.17.0