From fdc5f9170a2065ca59137e6081508e4c5a56442e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kuba=20Szczodrzy=C5=84ski?= <kuba@szczodrzynski.pl>
Date: Thu, 8 Feb 2024 18:57:08 +0100
Subject: [PATCH] Support evdev on Linux

---
 src/drv/tft/tft_driver_posix_fbdev.cpp       | 16 +++++++++++++++-
 src/hasp_gui.cpp                             |  6 ++++++
 user_setups/linux_sdl/linux_fbdev_64bits.ini |  1 +
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/drv/tft/tft_driver_posix_fbdev.cpp b/src/drv/tft/tft_driver_posix_fbdev.cpp
index ba584b01..e76b7190 100644
--- a/src/drv/tft/tft_driver_posix_fbdev.cpp
+++ b/src/drv/tft/tft_driver_posix_fbdev.cpp
@@ -11,6 +11,10 @@
 #include "drv/tft/tft_driver.h"
 #include "tft_driver_posix_fbdev.h"
 
+#if USE_EVDEV || USE_BSD_EVDEV
+#include "indev/evdev.h"
+#endif
+
 #include "dev/device.h"
 #include "hasp_debug.h"
 #include "hasp_gui.h"
@@ -23,6 +27,9 @@
 
 #include <unistd.h>
 
+extern uint16_t tft_width;
+extern uint16_t tft_height;
+
 namespace dev {
 
 /**
@@ -71,6 +78,13 @@ void TftFbdevDrv::init(int32_t w, int h)
     fbdev_init();
     fbdev_get_sizes((uint32_t*)&_width, (uint32_t*)&_height);
 
+    tft_width  = _width;
+    tft_height = _height;
+
+#if USE_EVDEV || USE_BSD_EVDEV
+    evdev_register("/dev/input/event2", LV_INDEV_TYPE_POINTER, NULL);
+#endif
+
 #if HASP_USE_LVGL_TASK
 #error "fbdev LVGL task is not implemented"
 #else
@@ -99,7 +113,7 @@ void TftFbdevDrv::set_invert(bool invert)
 {}
 void TftFbdevDrv::flush_pixels(lv_disp_drv_t* disp, const lv_area_t* area, lv_color_t* color_p)
 {
-    fbdev_flush(disp, area, color_p);
+    lv_disp_flush_ready(disp);
 }
 bool TftFbdevDrv::is_driver_pin(uint8_t pin)
 {
diff --git a/src/hasp_gui.cpp b/src/hasp_gui.cpp
index af4c8388..ac181b83 100644
--- a/src/hasp_gui.cpp
+++ b/src/hasp_gui.cpp
@@ -291,6 +291,10 @@ void guiSetup()
 #endif
     disp_drv.monitor_cb = gui_monitor_cb;
 
+    // register a touchscreen/mouse driver - only on real hardware and SDL2
+    // Win32 and POSIX handles input drivers in tft_driver
+#if TOUCH_DRIVER != -1 || USE_MONITOR
+
     /* Initialize the touch pad */
     static lv_indev_drv_t indev_drv;
     lv_indev_drv_init(&indev_drv);
@@ -331,6 +335,8 @@ void guiSetup()
     gui_hide_pointer(false);
     lv_indev_set_cursor(mouse_indev, cursor); /*Connect the image  object to the driver*/
 
+#endif // TOUCH_DRIVER != -1 || USE_MONITOR
+
 #if HASP_TARGET_ARDUINO
     // drv_touch_init(gui_settings.rotation); // Touch driver
     haspTouch.init(tft_width, tft_height);
diff --git a/user_setups/linux_sdl/linux_fbdev_64bits.ini b/user_setups/linux_sdl/linux_fbdev_64bits.ini
index 624d3de6..d1982e57 100644
--- a/user_setups/linux_sdl/linux_fbdev_64bits.ini
+++ b/user_setups/linux_sdl/linux_fbdev_64bits.ini
@@ -14,6 +14,7 @@ build_flags =
   ;-D LV_LVGL_H_INCLUDE_SIMPLE
   ;-D LV_DRV_NO_CONF
   -D USE_FBDEV
+  -D USE_EVDEV
   ; ----- ArduinoJson
   -D ARDUINOJSON_DECODE_UNICODE=1
   -D HASP_NUM_PAGES=12