feat(core/rust): direct write to display memory for better performance on TT hardware

core/embed/rust/src/trezorhal/display.rs

@@ -108,6 +108,17 @@ pub fn loader(
     }
 }
 
+#[inline(always)]
+#[cfg(all(feature = "model_tt", target_arch = "arm"))]
+pub fn pixeldata(c: u16) {
+    unsafe {
+        ffi::DISPLAY_DATA_ADDRESS.write_volatile((c >> 8) as u8);
+        ffi::DISPLAY_DATA_ADDRESS.write_volatile((c & 0xff) as u8);
+    }
+}
+
+#[inline(always)]
+#[cfg(not(all(feature = "model_tt", target_arch = "arm")))]
 pub fn pixeldata(c: u16) {
     unsafe {
         ffi::display_pixeldata(c);

core/embed/rust/src/ui/display.rs

@@ -183,6 +183,7 @@ pub fn text_right(baseline: Point, text: &str, font: Font, fg_color: Color, bg_c
     );
 }
 
+#[inline(always)]
 pub fn pixeldata(color: Color) {
     display::pixeldata(color.into());
 }