feat(core/rust): expose touch processing functions to rust

core/embed/rust/build.rs

@@ -337,7 +337,16 @@ fn generate_trezorhal_bindings() {
         .allowlist_var("text_buffer_height")
         .allowlist_var("buffer_width")
         //usb
-        .allowlist_function("usb_configured");
+        .allowlist_function("usb_configured")
+        // touch
+        .allowlist_function("touch_read")
+        // button
+        .allowlist_function("button_read")
+        .allowlist_var("BTN_EVT_DOWN")
+        .allowlist_var("BTN_EVT_UP")
+        .allowlist_var("BTN_RIGHT")
+        .allowlist_var("BTN_LEFT");
+
     // Write the bindings to a file in the OUR_DIR.
     bindings
         .generate()

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

@@ -0,0 +1,14 @@
+use super::ffi;
+
+#[cfg(feature = "buttons")]
+pub use super::ffi::{BTN_EVT_DOWN, BTN_EVT_UP, BTN_LEFT, BTN_RIGHT};
+
+#[cfg(feature = "touch")]
+pub fn io_touch_read() -> u32 {
+    unsafe { ffi::touch_read() }
+}
+
+#[cfg(feature = "buttons")]
+pub fn io_button_read() -> u32 {
+    unsafe { ffi::button_read() }
+}

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

@@ -7,6 +7,7 @@ pub mod display;
 #[cfg(feature = "dma2d")]
 pub mod dma2d;
 mod ffi;
+pub mod io;
 pub mod qr;
 pub mod random;
 #[cfg(feature = "model_tr")]

core/embed/rust/trezorhal.h

@@ -1,5 +1,6 @@
 #include TREZOR_BOARD
 #include "buffers.h"
+#include "button.h"
 #include "common.h"
 #include "display.h"
 #include "display_interface.h"
@@ -9,6 +10,7 @@
 #include "rgb_led.h"
 #include "secbool.h"
 #include "storage.h"
+#include "touch/touch.h"
 #include "usb.h"
 
 #include "bip39.h"