From 4142d0ccb91ef2a246a4042260a93a113e16d404 Mon Sep 17 00:00:00 2001
From: "huahui.mai" <huahui.mai@artinchip.com>
Date: Mon, 7 Apr 2025 15:38:51 +0800
Subject: [PATCH] Support ArtInChip Framebuffer rotate 0/90/180/270

---
 src/gui/embedded/qscreen_qws.cpp | 36 ++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/gui/embedded/qscreen_qws.cpp b/src/gui/embedded/qscreen_qws.cpp
index 407366c0..57f1e122 100644
--- a/src/gui/embedded/qscreen_qws.cpp
+++ b/src/gui/embedded/qscreen_qws.cpp
@@ -590,6 +590,40 @@ void qt_solidFill_setup(QScreen *screen, const QColor &color,
     screen->d_ptr->solidFill(screen, color, region);
 }
 
+#include <linux/fb.h>
+static int g_fd = -1;
+static int g_rotate = -1;
+
+static void aic_fb_rotate(void)
+{
+    struct fb_var_screeninfo var = {0};
+    int zero = 0;
+
+    if (g_fd < 0) {
+        g_fd = open("/dev/fb0", O_RDWR);
+        if (g_fd < 0)
+            qFatal("open /dev/fb0 error\n");
+    }
+    if (g_rotate < 0) {
+        ioctl(g_fd, FBIOGET_VSCREENINFO, &var);
+        g_rotate = var.rotate;
+    }
+
+    if (g_rotate == 0)
+	    return;
+
+    var.rotate = g_rotate;
+
+    if (ioctl(g_fd, FBIOPAN_DISPLAY, &var) == 0) {
+        if (ioctl(g_fd, FBIO_WAITFORVSYNC, &zero) < 0) {
+            qWarning("ioctl FBIO_WAITFORVSYNC fail\n");
+            return;
+        }
+    } else {
+        qWarning("pan display err\n");
+    }
+}
+
 template <typename DST, typename SRC>
 static void blit_template(QScreen *screen, const QImage &image,
                           const QPoint &topLeft, const QRegion &region)
@@ -619,6 +653,8 @@ static void blit_template(QScreen *screen, const QImage &image,
                                      screenStride, imageStride);
         }
     }
+
+    aic_fb_rotate();
 }
 
 #ifdef QT_QWS_DEPTH_32
-- 
2.25.1