From bd476769cc38d6c91458d8196a6109c405266f59 Mon Sep 17 00:00:00 2001
From: tychovrahe <brunam@seznam.cz>
Date: Fri, 29 Apr 2022 10:42:40 +0200
Subject: [PATCH] feat(core): add reset state on display clear on model R.
 Added to rest of the models as noop.

---
 core/embed/extmod/modtrezorui/display-stm32_1.h | 2 ++
 core/embed/extmod/modtrezorui/display-stm32_T.h | 2 ++
 core/embed/extmod/modtrezorui/display-unix.h    | 2 ++
 core/embed/extmod/modtrezorui/display.c         | 3 +++
 4 files changed, 9 insertions(+)

diff --git a/core/embed/extmod/modtrezorui/display-stm32_1.h b/core/embed/extmod/modtrezorui/display-stm32_1.h
index 93b1335f71..34ff1a0545 100644
--- a/core/embed/extmod/modtrezorui/display-stm32_1.h
+++ b/core/embed/extmod/modtrezorui/display-stm32_1.h
@@ -89,6 +89,8 @@ void PIXELDATA(uint16_t c) {
   }
 }
 
+static void display_reset_state() {}
+
 void PIXELDATA_DIRTY() { pixeldata_dirty = true; }
 
 static void display_set_window(uint16_t x0, uint16_t y0, uint16_t x1,
diff --git a/core/embed/extmod/modtrezorui/display-stm32_T.h b/core/embed/extmod/modtrezorui/display-stm32_T.h
index 1b555249f9..815c0dd137 100644
--- a/core/embed/extmod/modtrezorui/display-stm32_T.h
+++ b/core/embed/extmod/modtrezorui/display-stm32_T.h
@@ -91,6 +91,8 @@ static uint32_t display_identify(void) {
   return id;
 }
 
+static void display_reset_state() {}
+
 static void __attribute__((unused)) display_sleep(void) {
   uint32_t id = display_identify();
   if ((id == DISPLAY_ID_ILI9341V) || (id == DISPLAY_ID_GC9307) ||
diff --git a/core/embed/extmod/modtrezorui/display-unix.h b/core/embed/extmod/modtrezorui/display-unix.h
index 81f5cc5768..7a72e2f656 100644
--- a/core/embed/extmod/modtrezorui/display-unix.h
+++ b/core/embed/extmod/modtrezorui/display-unix.h
@@ -98,6 +98,8 @@ void PIXELDATA(uint16_t c) {
   }
 }
 
+static void display_reset_state() {}
+
 void display_init_seq(void) {}
 
 void display_deinit(void) {
diff --git a/core/embed/extmod/modtrezorui/display.c b/core/embed/extmod/modtrezorui/display.c
index 022cca6dc0..20e5d4f0f0 100644
--- a/core/embed/extmod/modtrezorui/display.c
+++ b/core/embed/extmod/modtrezorui/display.c
@@ -158,6 +158,9 @@ static inline void clamp_coords(int x, int y, int w, int h, int *x0, int *y0,
 
 void display_clear(void) {
   const int saved_orientation = DISPLAY_ORIENTATION;
+
+  display_reset_state();
+
   // set MADCTL first so that we can set the window correctly next
   display_orientation(0);
   // address the complete frame memory