refactor(core/embed): prepare touch drivers for low power mode

[no changelog]

core/SConscript.bootloader_emu

@@ -110,7 +110,6 @@ SOURCE_MOD += [
     'embed/lib/gfx_bitblt_rgba8888.c',
     'embed/lib/image.c',
     'embed/lib/terminal.c',
-    'embed/lib/touch.c',
     'embed/lib/unit_variant.c',
     'vendor/micropython/lib/uzlib/adler32.c',
     'vendor/micropython/lib/uzlib/crc32.c',
@@ -144,15 +143,16 @@ SOURCE_BOOTLOADER = [
 
 SOURCE_TREZORHAL = [
     'embed/trezorhal/unix/boot_args.c',
+    'embed/trezorhal/unix/button.c',
+    'embed/trezorhal/unix/common.c',
     'embed/trezorhal/unix/fault_handlers.c',
-    'embed/trezorhal/unix/flash.c',
     'embed/trezorhal/unix/flash_otp.c',
-    'embed/trezorhal/unix/common.c',
-    'embed/trezorhal/unix/touch/touch.c',
-    'embed/trezorhal/unix/rng.c',
-    'embed/trezorhal/unix/usb.c',
+    'embed/trezorhal/unix/flash.c',
     'embed/trezorhal/unix/random_delays.c',
+    'embed/trezorhal/unix/rng.c',
     'embed/trezorhal/unix/secret.c',
+    'embed/trezorhal/unix/touch.c',
+    'embed/trezorhal/unix/usb.c',
 ]
 
 if NEW_RENDERING:

core/SConscript.unix

@@ -416,21 +416,22 @@ SOURCE_MICROPYTHON = [
 
 SOURCE_UNIX = [
     'embed/trezorhal/unix/boot_args.c',
+    'embed/trezorhal/unix/button.c',
     'embed/trezorhal/unix/common.c',
-    'embed/trezorhal/unix/flash.c',
     'embed/trezorhal/unix/flash_otp.c',
+    'embed/trezorhal/unix/flash.c',
     'embed/trezorhal/unix/random_delays.c',
     'embed/trezorhal/unix/rng.c',
+    'embed/trezorhal/unix/touch.c',
     'embed/trezorhal/unix/usb.c',
-    'embed/trezorhal/unix/touch/touch.c',
-    'embed/unix/main.c',
     'embed/unix/main_main.c',
+    'embed/unix/main.c',
     'embed/unix/profile.c',
-    'vendor/micropython/shared/runtime/gchelper_generic.c',
     'vendor/micropython/ports/unix/alloc.c',
     'vendor/micropython/ports/unix/gccollect.c',
     'vendor/micropython/ports/unix/input.c',
     'vendor/micropython/ports/unix/unix_mphal.c',
+    'vendor/micropython/shared/runtime/gchelper_generic.c',
 ]
 
 if NEW_RENDERING:

core/embed/bootloader/bootui.c

@@ -154,16 +154,16 @@ static void ui_screen_boot_wait(int wait_seconds) {
 
 void ui_click(void) {
   // flush touch events if any
-  while (touch_read()) {
+  while (touch_get_event()) {
   }
   // wait for TOUCH_START
-  while ((touch_read() & TOUCH_START) == 0) {
+  while ((touch_get_event() & TOUCH_START) == 0) {
   }
   // wait for TOUCH_END
-  while ((touch_read() & TOUCH_END) == 0) {
+  while ((touch_get_event() & TOUCH_END) == 0) {
   }
   // flush touch events if any
-  while (touch_read()) {
+  while (touch_get_event()) {
   }
 }
 

core/embed/bootloader/main.c

@@ -399,7 +399,6 @@ int bootloader_main(void) {
   unit_variant_init();
 
 #ifdef USE_TOUCH
-  touch_power_on();
 #ifdef TREZOR_MODEL_T3T1
   // on T3T1, tester needs to run without touch, so making an exception
   // until unit variant is written in OTP
@@ -515,17 +514,22 @@ int bootloader_main(void) {
   uint32_t touched = 0;
 #ifdef USE_TOUCH
   if (firmware_present == sectrue && stay_in_bootloader != sectrue) {
-    touch_wait_until_ready();
+    // Wait until the touch controller is ready
+    // (on hardware this may take a while)
+    while (touch_ready() != sectrue) {
+      hal_delay(1);
+    }
+#ifdef TREZOR_EMULATOR
+    hal_delay(500);
+#endif
+    // Give the touch controller time to report events
+    // if someone touches the screen
     for (int i = 0; i < 10; i++) {
-      touched = touch_is_detected() | touch_read();
-      if (touched) {
+      if (touch_activity() == sectrue) {
+        touched = 1;
         break;
       }
-#ifdef TREZOR_EMULATOR
-      hal_delay(25);
-#else
-      hal_delay_us(1000);
-#endif
+      hal_delay(5);
     }
   }
 #elif defined USE_BUTTON

core/embed/bootloader_ci/main.c

@@ -206,7 +206,6 @@ int main(void) {
   random_delays_init();
 #ifdef USE_TOUCH
   touch_init();
-  touch_power_on();
 #endif
 
 #ifdef USE_HASH_PROCESSOR

core/embed/extmod/modtrezorio/modtrezorio-poll.h

@@ -85,9 +85,7 @@ STATIC mp_obj_t mod_trezorio_poll(mp_obj_t ifaces, mp_obj_t list_ref,
       }
 #if defined USE_TOUCH
       else if (iface == TOUCH_IFACE) {
-
-        const uint32_t evt = touch_read();
-
+        const uint32_t evt = touch_get_event();
         if (evt) {
           // ignore TOUCH_MOVE events if they are too frequent
           if ((evt & TOUCH_MOVE) == 0 ||

core/embed/prodtest/main.c

@@ -312,15 +312,15 @@ static secbool touch_click_timeout(uint32_t *touch, uint32_t timeout_ms) {
   uint32_t deadline = HAL_GetTick() + timeout_ms;
   uint32_t r = 0;
 
-  while (touch_read())
+  while (touch_get_event())
     ;
-  while ((touch_read() & TOUCH_START) == 0) {
+  while ((touch_get_event() & TOUCH_START) == 0) {
     if (HAL_GetTick() > deadline) return secfalse;
   }
-  while (((r = touch_read()) & TOUCH_END) == 0) {
+  while (((r = touch_get_event()) & TOUCH_END) == 0) {
     if (HAL_GetTick() > deadline) return secfalse;
   }
-  while (touch_read())
+  while (touch_get_event())
     ;
 
   *touch = r;
@@ -348,9 +348,9 @@ static void test_touch(const char *args) {
   }
   display_refresh();
 
-  touch_power_on();
+  touch_init();
 
-  uint32_t evt = 0;
+      uint32_t evt = 0;
   if (touch_click_timeout(&evt, timeout * 1000)) {
     uint16_t x = touch_unpack_x(evt);
     uint16_t y = touch_unpack_y(evt);
@@ -361,20 +361,20 @@ static void test_touch(const char *args) {
   display_clear();
   display_refresh();
 
-  touch_power_off();
+  touch_deinit();
 }
 
 static void test_sensitivity(const char *args) {
   int v = atoi(args);
 
-  touch_power_on();
-  touch_sensitivity(v & 0xFF);
+  touch_init();
+  touch_set_sensitivity(v & 0xFF);
 
   display_clear();
   display_refresh();
 
   for (;;) {
-    uint32_t evt = touch_read();
+    uint32_t evt = touch_get_event();
     if (evt & TOUCH_START || evt & TOUCH_MOVE) {
       int x = touch_unpack_x(evt);
       int y = touch_unpack_y(evt);
@@ -387,7 +387,7 @@ static void test_sensitivity(const char *args) {
     }
   }
 
-  touch_power_off();
+  touch_deinit();
 }
 
 static void touch_version(void) {

core/embed/rust/build.rs

@@ -442,7 +442,7 @@ fn generate_trezorhal_bindings() {
         //usb
         .allowlist_function("usb_configured")
         // touch
-        .allowlist_function("touch_read")
+        .allowlist_function("touch_get_event")
         // button
         .allowlist_function("button_read")
         // haptic

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

@@ -1,8 +1,8 @@
 use super::ffi;
 
 #[cfg(feature = "touch")]
-pub fn io_touch_read() -> u32 {
-    unsafe { ffi::touch_read() }
+pub fn io_touch_get_event() -> u32 {
+    unsafe { ffi::touch_get_event() }
 }
 
 #[cfg(feature = "button")]

core/embed/rust/src/ui/layout/simplified.rs

@@ -1,7 +1,7 @@
 #[cfg(feature = "button")]
 use crate::trezorhal::io::io_button_read;
 #[cfg(feature = "touch")]
-use crate::trezorhal::io::io_touch_read;
+use crate::trezorhal::io::io_touch_get_event;
 #[cfg(feature = "button")]
 use crate::ui::event::ButtonEvent;
 #[cfg(feature = "touch")]
@@ -56,7 +56,7 @@ fn button_eval() -> Option<ButtonEvent> {
 
 #[cfg(feature = "touch")]
 fn touch_eval() -> Option<TouchEvent> {
-    let event = io_touch_read();
+    let event = io_touch_get_event();
     if event == 0 {
         return None;
     }