1 files changed, 77 insertions, 0 deletions
diff --git a/system/fbterm/checkfb.c b/system/fbterm/checkfb.c
new file mode 100644
index 0000000000000..9180c4ef60430
--- /dev/null
+++ b/system/fbterm/checkfb.c
@@ -0,0 +1,77 @@
+/*
+# qtopia core testing framebuffer (1)
+# Originally written by Trolltech (2)(3)
+#
+# (1) http://cep.xray.aps.anl.gov/software/qt4-x11-4.2.2/qtopiacore-testingframebuffer.html
+# (2) http://cep.xray.aps.anl.gov/software/qt4-x11-4.2.2/opensourceedition.html
+# (3) http://doc.qt.digia.com/4.2/gpl.html
+#
+# Modified by Sébastien Ballet <slacker6896@gmail.com>
+*/
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+int main(int argc, char *argv[])
+{
+	int fbfd = 0;
+	struct fb_var_screeninfo vinfo;
+	struct fb_fix_screeninfo finfo;
+	long int screensize = 0;
+	char *fbp = 0;
+	
+	char* fbName="/dev/fb0";
+
+	if ( argc > 2) {
+		printf("usage: checkfb [framebuffer device] \n");
+		exit(1);
+	}
+
+	if ( argc == 2) {
+		fbName=argv[1];
+	} 
+
+	fbfd = open(fbName, O_RDWR);
+
+	if (fbfd == -1) {
+		perror("Error: cannot open framebuffer device");
+		exit(1);
+	}
+
+	printf("The framebuffer device (%s) was opened successfully.\n",fbName);
+
+		// Get fixed screen information
+	if (ioctl(fbfd, FBIOGET_FSCREENINFO, &finfo) == -1) {
+		perror("Error reading fixed information");
+		exit(2);
+	}
+
+		// Get variable screen information
+	if (ioctl(fbfd, FBIOGET_VSCREENINFO, &vinfo) == -1) {
+		perror("Error reading variable information");
+		exit(3);
+	}
+
+	printf("%dx%d, %dbpp\n", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
+
+		// Figure out the size of the screen in bytes
+	screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
+
+	// Map the device to memory
+	fbp = (char *)mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED,fbfd, 0);
+
+	if ( fbp == MAP_FAILED ) {
+		perror("Error: failed to map framebuffer device to memory");
+		exit(4);
+	}
+	printf("The framebuffer device was mapped to memory successfully.\n");
+
+	munmap(fbp, screensize);
+	close(fbfd);
+	return 0;
+}