Move LVGL gluecode back into main repository

[faxe1008]

Addresses: #60868

The related PR in the module: zephyrproject-rtos/lvgl#45.

[zephyrbot]

The following west manifest projects have been modified in this Pull Request:

Name	Old Revision	New Revision	Diff
lvgl	zephyrproject-rtos/lvgl@5da257f	zephyrproject-rtos/lvgl@8a6a2d1 (zephyr)	zephyrproject-rtos/lvgl@5da257f7..8a6a2d1d

Note: This message is automatically posted and updated by the Manifest GitHub Action.

[faxe1008]

@fabiobaltieri I merged the changes from pull/44 into here.

Building the sample works fine for me, but there are still some CI issues and I have no idea on how I can resolve them:
CI issue 1
CI issue 2

Simply put I need to somehow source the Kconfig from the module but don't know what the right way to do it is, considering I also have code in the zephyr main repo. Do you have any insights here :^) ?

[fabiobaltieri]

Simply put I need to somehow source the Kconfig from the module but don't know what the right way to do it is, considering I also have code in the zephyr main repo. Do you have any insights here :^) ?

Yeah so you want the module system to only include the Kconfig when it's there, just drop kconfig-ext: True from module.yml in the LVGL module PR and that'll make build/Kconfig/Kconfig.modules take care of the whole story.

diff --git a/zephyr/module.yml b/zephyr/module.yml
index e0e7d676..38ef2dd2 100644
--- a/zephyr/module.yml
+++ b/zephyr/module.yml
@@ -2,5 +2,4 @@
 name: lvgl
 build:
   cmake-ext: True
-  kconfig-ext: True
   kconfig: Kconfig

Then the Kconfig that is always there needs to have stub symbols with defined types for everything that is overridden at board level, apply this:

diff --git a/modules/lvgl/Kconfig b/modules/lvgl/Kconfig
index 43b187abee..9d1b1bc1da 100644
--- a/modules/lvgl/Kconfig
+++ b/modules/lvgl/Kconfig
@@ -11,9 +11,14 @@ config LVGL
 
 if LVGL
 
-source "${ZEPHYR_LVGL_MODULE_DIR}/Kconfig"
+config LV_USE_MONKEY
+       bool
+
+config LV_DPI_DEF
+       int
 
 config LV_CONF_SKIP
+       bool
        default n
 
 config APP_LINK_WITH_LVGL
@@ -25,7 +30,7 @@ config APP_LINK_WITH_LVGL
          issues for 'app'.
 
 config LV_Z_USE_FILESYSTEM
-       bool "Enable file system"
+       bool "LVGL file system support"
        depends on FILE_SYSTEM
        default y if FILE_SYSTEM
        help

[fabiobaltieri]

By the way, you can run the compliance checks locally with ./scripts/ci/check_compliance.py, something like ./scripts/ci/check_compliance.py -c origin/main.., saves you from pushing and waiting for CI to run it for you.

[faxe1008]

Thanks @fabiobaltieri for the hints, apart from a checkpatch false positive everything builds fine now.

[fabiobaltieri]

Thanks for taking care of this, looks good, should be a single commit though so if a bisect lands on the first one it builds correctly.

[faxe1008]

Squashed the commits down :^)

[faxe1008]

Adjusted all include guards, updated revision :^)

[fabiobaltieri]

@gmarull @jfischer-no @danieldegrasse any second approval for this? The CI fail is a false positive.

[danieldegrasse]

Thanks for taking this on- looks good to me, tested on an RT1170 with the LVGL benchmark and widgets demos and everything seems functional