fix(core): avoid LED blinking on event loop restart

diff --git a/core/.changelog.d/5990.fixed b/core/.changelog.d/5990.fixed
new file mode 100644
index 00000000..57a7e5a4
--- /dev/null
+++ b/core/.changelog.d/5990.fixed
@@ -0,0 +1 @@
+[T3W1] Fix homescreen LED blinking.
diff --git a/core/embed/rust/src/trezorhal/rgb_led.rs b/core/embed/rust/src/trezorhal/rgb_led.rs
index 379797e5..123ae4ce 100644
--- a/core/embed/rust/src/trezorhal/rgb_led.rs
+++ b/core/embed/rust/src/trezorhal/rgb_led.rs
@@ -1,5 +1,8 @@
 #![allow(dead_code)]
 
+#[cfg(feature = "ui")]
+use crate::ui::display::Color;
+
 use super::ffi;
 
 pub fn set_color(color: u32) {
@@ -7,3 +10,9 @@ pub fn set_color(color: u32) {
         ffi::rgb_led_set_color(color);
     }
 }
+
+/// Set LED color if provided, otherwise turn the LED off.
+#[cfg(feature = "ui")]
+pub fn set(color: Color) {
+    set_color(color.to_u32());
+}
diff --git a/core/embed/rust/src/ui/flow/swipe.rs b/core/embed/rust/src/ui/flow/swipe.rs
index 6249481a..d4547074 100644
--- a/core/embed/rust/src/ui/flow/swipe.rs
+++ b/core/embed/rust/src/ui/flow/swipe.rs
@@ -1,3 +1,5 @@
+#[cfg(feature = "rgb_led")]
+use crate::trezorhal::rgb_led;
 use crate::{
     error::{self, Error},
     maybe_trace::MaybeTrace,
@@ -58,7 +60,7 @@ where
     }
 
     fn render(&'s self, target: &mut R) {
-        <Self as Component>::render(self, target)
+        <Self as Component>::render(self, target);
     }
 
     #[cfg(feature = "ui_debug")]
@@ -313,6 +315,10 @@ impl Layout<Result<Obj, Error>> for SwipeFlow {
         let overflow: bool = false;
         render_on_display(None, Some(Color::black()), |target| {
             self.current_page().render(target);
+
+            #[cfg(feature = "rgb_led")]
+            rgb_led::set(target.led_color());
+
             #[cfg(feature = "ui_debug")]
             if target.should_raise_overflow_exception() {
                 overflow = true;
diff --git a/core/embed/rust/src/ui/layout/obj.rs b/core/embed/rust/src/ui/layout/obj.rs
index 3c3e05e4..9fafa599 100644
--- a/core/embed/rust/src/ui/layout/obj.rs
+++ b/core/embed/rust/src/ui/layout/obj.rs
@@ -14,6 +14,8 @@ use num_traits::ToPrimitive;
 #[cfg(feature = "ble")]
 use crate::ui::event::BLEEvent;
 
+#[cfg(feature = "rgb_led")]
+use crate::trezorhal::rgb_led;
 #[cfg(feature = "button")]
 use crate::{
     trezorhal::button::{PhysicalButton, PhysicalButtonEvent},
@@ -52,7 +54,7 @@ use crate::{
     },
 };
 
-#[cfg(feature = "ui_debug")]
+#[cfg(any(feature = "rgb_led", feature = "ui_debug"))]
 use crate::ui::shape::Renderer;
 
 impl AttachType {
@@ -157,6 +159,10 @@ where
         let mut overflow: bool = false;
         render_on_display(None, Some(Color::black()), |target| {
             self.inner.render(target);
+
+            #[cfg(feature = "rgb_led")]
+            rgb_led::set(target.led_color());
+
             #[cfg(feature = "ui_debug")]
             if target.should_raise_overflow_exception() {
                 overflow = true;
diff --git a/core/embed/rust/src/ui/layout_eckhart/component/error.rs b/core/embed/rust/src/ui/layout_eckhart/component/error.rs
index 660e0c26..072ad4f8 100644
--- a/core/embed/rust/src/ui/layout_eckhart/component/error.rs
+++ b/core/embed/rust/src/ui/layout_eckhart/component/error.rs
@@ -1,6 +1,3 @@
-#[cfg(feature = "rgb_led")]
-use crate::trezorhal::rgb_led;
-
 use crate::{
     strutil::TString,
     ui::{
@@ -88,6 +85,6 @@ impl<'a> Component for ErrorScreen<'a> {
         self.wait_for_restart.render(target);
         self.screen_border.render(u8::MAX, target);
         #[cfg(feature = "rgb_led")]
-        rgb_led::set_color(LED_RED.into());
+        target.set_led_color(LED_RED);
     }
 }
diff --git a/core/embed/rust/src/ui/layout_eckhart/firmware/hold_to_confirm.rs b/core/embed/rust/src/ui/layout_eckhart/firmware/hold_to_confirm.rs
index e0f92c8c..2997a9ea 100644
--- a/core/embed/rust/src/ui/layout_eckhart/firmware/hold_to_confirm.rs
+++ b/core/embed/rust/src/ui/layout_eckhart/firmware/hold_to_confirm.rs
@@ -21,9 +21,6 @@ use pareen;
 #[cfg(feature = "haptic")]
 use crate::trezorhal::haptic;
 
-#[cfg(feature = "rgb_led")]
-use crate::trezorhal::rgb_led;
-
 /// A component that displays a border that grows from the bottom of the screen
 /// to the top. The animation is parametrizable by color and duration.
 pub struct HoldToConfirmAnim {
@@ -37,6 +34,8 @@ pub struct HoldToConfirmAnim {
     header_overlay: Option<TString<'static>>,
     /// Animation state
     state: AnimState,
+    #[cfg(feature = "rgb_led")]
+    led_color: Color,
 }
 
 pub enum HoldToConfirmMsg {
@@ -85,6 +84,8 @@ impl HoldToConfirmAnim {
             border: ScreenBorder::new(default_color),
             header_overlay: None,
             state: AnimState::Idle,
+            #[cfg(feature = "rgb_led")]
+            led_color: Color::black(),
         }
     }
 
@@ -122,12 +123,17 @@ impl HoldToConfirmAnim {
 
     pub fn finalize(&mut self) {
         #[cfg(feature = "rgb_led")]
-        rgb_led::set_color(theme::color_to_led_color(self.color).into());
+        self.update_led_color(theme::color_to_led_color(self.color));
         self.state = AnimState::Finalizing {
             stopwatch: Stopwatch::new_started(),
         };
     }
 
+    #[cfg(feature = "rgb_led")]
+    fn update_led_color(&mut self, led_color: Color) {
+        self.led_color = led_color;
+    }
+
     fn is_animating(&self) -> bool {
         match &self.state {
             AnimState::Idle => false,
@@ -164,7 +170,7 @@ impl Component for HoldToConfirmAnim {
                 if stopwatch.is_running() && !stopwatch.is_running_within(Self::FINALIZING_DURATION)
                 {
                     #[cfg(feature = "rgb_led")]
-                    rgb_led::set_color(0);
+                    self.update_led_color(Color::black());
                     return Some(HoldToConfirmMsg::Finalized);
                 }
             }
@@ -206,6 +212,8 @@ impl Component for HoldToConfirmAnim {
                 self.border.render(alpha, target);
             }
         }
+        #[cfg(feature = "rgb_led")]
+        target.set_led_color(self.led_color);
     }
 }
 
diff --git a/core/embed/rust/src/ui/layout_eckhart/firmware/homescreen.rs b/core/embed/rust/src/ui/layout_eckhart/firmware/homescreen.rs
index b5592a7c..c0eac0a0 100644
--- a/core/embed/rust/src/ui/layout_eckhart/firmware/homescreen.rs
+++ b/core/embed/rust/src/ui/layout_eckhart/firmware/homescreen.rs
@@ -1,6 +1,3 @@
-#[cfg(feature = "rgb_led")]
-use crate::trezorhal::rgb_led;
-
 use crate::{
     error::Error,
     io::BinaryData,
@@ -150,14 +147,6 @@ impl Homescreen {
     }
 }
 
-impl Drop for Homescreen {
-    fn drop(&mut self) {
-        // Turn off the LED when homescreen is destroyed
-        #[cfg(feature = "rgb_led")]
-        rgb_led::set_color(0);
-    }
-}
-
 impl Component for Homescreen {
     type Msg = HomescreenMsg;
 
@@ -220,11 +209,7 @@ impl Component for Homescreen {
         }
 
         #[cfg(feature = "rgb_led")]
-        if let Some(rgb_led) = self.led_color {
-            rgb_led::set_color(rgb_led.to_u32());
-        } else {
-            rgb_led::set_color(0);
-        }
+        target.set_led_color(self.led_color.unwrap_or_else(Color::black));
     }
 }
 
diff --git a/core/embed/rust/src/ui/layout_eckhart/firmware/tutorial_screen.rs b/core/embed/rust/src/ui/layout_eckhart/firmware/tutorial_screen.rs
index e7c01402..ac9f7648 100644
--- a/core/embed/rust/src/ui/layout_eckhart/firmware/tutorial_screen.rs
+++ b/core/embed/rust/src/ui/layout_eckhart/firmware/tutorial_screen.rs
@@ -11,9 +11,6 @@ use crate::{
     },
 };
 
-#[cfg(feature = "rgb_led")]
-use crate::trezorhal::rgb_led;
-
 use super::{
     super::{
         component::Button,
@@ -44,6 +41,8 @@ pub struct TutorialWelcomeScreen {
     /// Timer for the led color change
     #[cfg(feature = "rgb_led")]
     timer: Timeout,
+    #[cfg(feature = "rgb_led")]
+    led_color: Color,
     /// Stopwatch for the loader animation
     stopwatch: Stopwatch,
     border: ScreenBorder,
@@ -65,6 +64,8 @@ impl TutorialWelcomeScreen {
             } else {
                 LOADER_DURATION.to_millis()
             }),
+            #[cfg(feature = "rgb_led")]
+            led_color: Color::black(),
             stopwatch: Stopwatch::new_started(),
             border: ScreenBorder::new(theme::GREEN_LIME),
         }
@@ -88,15 +89,12 @@ impl Component for TutorialWelcomeScreen {
 
     fn event(&mut self, ctx: &mut EventCtx, event: Event) -> Option<Self::Msg> {
         if let Some(ActionBarMsg::Confirmed) = self.action_bar.event(ctx, event) {
-            // Turn off the LED when the screen is destroyed
-            #[cfg(feature = "rgb_led")]
-            rgb_led::set_color(0);
             return Some(TutorialWelcomeScreenMsg::Confirmed);
         }
 
         #[cfg(feature = "rgb_led")]
         if self.timer.event(ctx, event).is_some() {
-            rgb_led::set_color(LED_COLOR.to_u32());
+            self.led_color = LED_COLOR;
             return None;
         }
 
@@ -152,6 +150,9 @@ impl Component for TutorialWelcomeScreen {
             let loader_val = (progress * LOADER_MAX_VAL as f32) as u16;
             render_loader_indeterminate(loader_val, &self.border, target);
         }
+
+        #[cfg(feature = "rgb_led")]
+        target.set_led_color(self.led_color);
     }
 }
 
diff --git a/core/embed/rust/src/ui/shape/render.rs b/core/embed/rust/src/ui/shape/render.rs
index d2745256..47b65500 100644
--- a/core/embed/rust/src/ui/shape/render.rs
+++ b/core/embed/rust/src/ui/shape/render.rs
@@ -59,6 +59,12 @@ pub trait Renderer<'a> {
         self.set_viewport(original);
     }
 
+    #[cfg(feature = "rgb_led")]
+    fn set_led_color(&mut self, color: Color);
+
+    #[cfg(feature = "rgb_led")]
+    fn led_color(&self) -> Color;
+
     #[cfg(feature = "ui_debug")]
     fn raise_overflow_exception(&mut self);
 
@@ -80,6 +86,9 @@ where
     /// Drawing cache (decompression context, scratch-pad memory)
     cache: &'a DrawingCache<'alloc>,
 
+    #[cfg(feature = "rgb_led")]
+    led_color: Option<Color>,
+
     #[cfg(feature = "ui_debug")]
     overflow: bool,
 }
@@ -104,6 +113,8 @@ where
         Self {
             canvas,
             cache,
+            #[cfg(feature = "rgb_led")]
+            led_color: None,
             #[cfg(feature = "ui_debug")]
             overflow: false,
         }
@@ -132,6 +143,18 @@ where
         }
     }
 
+    #[cfg(feature = "rgb_led")]
+    fn set_led_color(&mut self, color: Color) {
+        // LED color should be set once per rendered frame.
+        debug_assert!(self.led_color.is_none_or(|current| current == color));
+        self.led_color = Some(color);
+    }
+
+    #[cfg(feature = "rgb_led")]
+    fn led_color(&self) -> Color {
+        self.led_color.unwrap_or_else(Color::black)
+    }
+
     #[cfg(feature = "ui_debug")]
     fn raise_overflow_exception(&mut self) {
         self.overflow = true;
@@ -189,6 +212,16 @@ where
         self.renderer.render_shape(shape);
     }
 
+    #[cfg(feature = "rgb_led")]
+    fn set_led_color(&mut self, color: Color) {
+        self.renderer.set_led_color(color);
+    }
+
+    #[cfg(feature = "rgb_led")]
+    fn led_color(&self) -> Color {
+        self.renderer.led_color()
+    }
+
     #[cfg(feature = "ui_debug")]
     fn raise_overflow_exception(&mut self) {
         self.renderer.raise_overflow_exception();