From 79adffc887ffcb01f209cbc851b2479133d505b5 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sun, 12 Apr 2009 14:51:01 +0000
Subject: [PATCH] added mdpcjoy

---
 mdpcjoy/mdpcjoy.c | 111 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 mdpcjoy/mdpcjoy.c

diff --git a/mdpcjoy/mdpcjoy.c b/mdpcjoy/mdpcjoy.c
new file mode 100644
index 0000000..8ae6f82
--- /dev/null
+++ b/mdpcjoy/mdpcjoy.c
@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <linux/input.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/io.h>
+
+int main()
+{
+	int i, ret, fd;
+	int dpad = 0;
+
+	for (i = 0;; i++)
+	{
+		int support = 0;
+		char name[64];
+
+		snprintf(name, sizeof(name), "/dev/input/event%d", i);
+		fd = open(name, O_RDONLY);
+		if (fd == -1)
+			break;
+
+		/* check supported events */
+		ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
+		if (ret == -1) {
+			printf("ioctl failed on %s\n", name);
+			goto skip;
+		}
+
+		if (!(support & (1 << EV_KEY)))
+			goto skip;
+		if (!(support & (1 << EV_ABS)))
+			goto skip;
+
+		ioctl(fd, EVIOCGNAME(sizeof(name)), name);
+		printf("found \"%s\" (type %08x)\n", name, support);
+		break;
+
+skip:
+		close(fd);
+		fd = -1;
+	}
+
+	if (fd == -1) {
+		printf("no suitable devs\n");
+		return 1;
+	}
+
+	ret = ioperm(888, 3, 1);
+	if (ret != 0) {
+		perror("ioperm");
+		return 1;
+	}
+
+	outb(0xc0, 890);	/* switch to output mode, TL and TR high */
+	outb(0x0f, 888);	/* Dx high */
+
+	while (1)
+	{
+		struct input_event ev;
+		int rd;
+
+		rd = read(fd, &ev, sizeof(ev));
+		if (rd < (int) sizeof(ev)) {
+			perror("in_evdev: error reading");
+			return 1;
+		}
+
+		if (ev.type == EV_KEY) {
+			int val = 0xc0;
+			if (ev.code & 1) {
+				if (ev.value)
+					val |= 2;
+				else
+					val &= ~2;
+			} else {
+				if (ev.value)
+					val |= 8;
+				else
+					val &= ~8;
+			}
+			outb(val, 890);
+		}
+		else if (ev.type == EV_ABS)
+		{
+			if (ev.code == ABS_X) {
+				if (ev.value < 128)
+					dpad |= 4;
+				else if (ev.value > 128)
+					dpad |= 8;
+				else
+					dpad &= ~0x0c;
+			}
+			if (ev.code == ABS_Y) {
+				if (ev.value < 128)
+					dpad |= 1;
+				else if (ev.value > 128)
+					dpad |= 2;
+				else
+					dpad &= ~3;
+			}
+			outb(~dpad & 0x0f, 888);
+		}
+	}
+
+	return 0;
+}
+
-- 
2.39.5