modules: lvgl: input: fix indev binding to display

JarmouniA · nashif · commit abdb1ef3bc96 · 2025-05-13T22:21:50.000-04:00
When no 'display' property is present in LVGL input dev node in DT,
we should default to LVGL Default Display to preserve the old behavior
and not break LV Input on setups with only one display.

Signed-off-by: Abderrahmane JARMOUNI &lt;git@jarmouni.me&gt;
diff --git a/modules/lvgl/input/lvgl_common_input.c b/modules/lvgl/input/lvgl_common_input.c
@@ -52,7 +52,8 @@ static lv_display_t *lvgl_input_get_display(const struct device *dev)
 	lv_display_t *lv_disp = NULL;
 
 	if (disp_dev == NULL) {
-		return NULL;
+		LOG_DBG("No display phandle is passed in DT, defaulting to LV Default Display");
+		return lv_display_get_default();
 	}
 
 	for (int i = 0; i < DT_ZEPHYR_DISPLAYS_COUNT; i++) {

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,8 @@ static lv_display_t lvgl_input_get_display(const struct device dev)`
`52`	`52`	`lv_display_t *lv_disp = NULL;`
`53`	`53`
`54`	`54`	`if (disp_dev == NULL) {`
`55`		`- return NULL;`
	`55`	`+ LOG_DBG("No display phandle is passed in DT, defaulting to LV Default Display");`
	`56`	`+ return lv_display_get_default();`
`56`	`57`	`}`
`57`	`58`
`58`	`59`	`for (int i = 0; i < DT_ZEPHYR_DISPLAYS_COUNT; i++) {`