weston: allow overriding the weston background from Yocto

https://onedigi.atlassian.net/browse/DEL-9816

Signed-off-by: Francisco Gil <francisco.gilmartinez@digi.com>

meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-graphics/wayland/weston-init.bbappend

@@ -1,10 +1,13 @@
+# Copyright (C) 2026, Digi International Inc.
+
 FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+WESTON_BACKGROUND_PNG ?= "${WORKDIR}/background.png"
 
 DEPENDS += "${@oe.utils.conditional('DISTRO_FEATURES', 'pulseaudio', 'pulseaudio', '', d)}"
 
 SRC_URI += " \
             file://weston.ini \
-            file://digi_background.png \
+            file://background.png \
             file://weston-launch.service \
             file://weston-checkgpu.service \
             file://weston_profile.sh \
@@ -42,7 +45,7 @@ do_install() {
 
     install -m 0644 ${WORKDIR}/weston.ini ${D}${sysconfdir}/xdg/weston
 
-    install -m 0644 ${WORKDIR}/digi_background.png ${D}${datadir}/weston/backgrounds/digi_background.png
+    install -m 0644 "${WESTON_BACKGROUND_PNG}" ${D}${datadir}/weston/backgrounds/background.png
     printf "\n[launcher]\nicon=${datadir}/weston/terminal.png\npath=${bindir}/weston-terminal\n" >> ${D}${sysconfdir}/xdg/weston/weston.ini
 
     install -d ${D}${systemd_system_unitdir} ${D}${sbindir}

meta-digi-arm/dynamic-layers/stm-st-stm32mp/recipes-graphics/wayland/weston-init/weston.ini

@@ -13,7 +13,7 @@ remoting=remoting-plugin.so
 keymap_layout=us
 
 [shell]
-background-image=/usr/share/weston/backgrounds/digi_background.png
+background-image=/usr/share/weston/backgrounds/background.png
 background-type=scale-crop
 
 # HDMI connector

meta-digi-dey/dynamic-layers/freescale-layer/recipes-graphics/wayland/weston-init.bbappend

@@ -1,9 +1,10 @@
-# Copyright (C) 2019-2024, Digi International Inc.
+# Copyright (C) 2019-2026, Digi International Inc.
 
 FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+WESTON_BACKGROUND_PNG ?= "${WORKDIR}/background.png"
 
 SRC_URI += " \
-    file://digi_background.png \
+    file://background.png \
     file://profile \
 "
 
@@ -30,8 +31,9 @@ do_install:append() {
 
 # DEY customizations
 do_install:append() {
+    install -d ${D}${datadir}/weston/backgrounds
     install -Dm0755 ${WORKDIR}/profile ${D}${sysconfdir}/profile.d/weston.sh
-    install -Dm0644 ${WORKDIR}/digi_background.png ${D}${datadir}/weston/digi_background.png
+    install -Dm0644 "${WESTON_BACKGROUND_PNG}" ${D}${datadir}/weston/backgrounds/background.png
 
     printf "\n[launcher]\nicon=${datadir}/weston/terminal.png\npath=${bindir}/weston-terminal\n" >> ${D}${sysconfdir}/xdg/weston/weston.ini
 }
@@ -41,4 +43,4 @@ do_install:append:ccimx93() {
     echo "QMLSCENE_DEVICE=softwarecontext" >> ${D}${sysconfdir}/default/weston
 }
 
-FILES:${PN} += "${datadir}/weston/digi_background.png"
+FILES:${PN} += "${datadir}/weston/backgrounds/background.png"

meta-digi-dey/dynamic-layers/freescale-layer/recipes-graphics/wayland/weston-init/imx-nxp-bsp/weston.ini

@@ -28,5 +28,5 @@ command=@bindir@/weston --backend=rdp-backend.so --shell=fullscreen-shell.so --n
 
 # Digi: Set custom background
 [shell]
-background-image=/usr/share/weston/digi_background.png
+background-image=/usr/share/weston/backgrounds/background.png
 background-type=scale-crop