Luminary board input support.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3689 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/stellaris_input.c b/hw/stellaris_input.c
new file mode 100644
index 0000000..461868b
--- /dev/null
+++ b/hw/stellaris_input.c
@@ -0,0 +1,66 @@
+/*
+ * Gamepad style buttons connected to IRQ/GPIO lines
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licenced under the GPL.
+ */
+#include "hw.h"
+#include "devices.h"
+#include "console.h"
+
+typedef struct {
+ qemu_irq irq;
+ int keycode;
+ int pressed;
+} gamepad_button;
+
+typedef struct {
+ gamepad_button *buttons;
+ int num_buttons;
+ int extension;
+} gamepad_state;
+
+static void stellaris_gamepad_put_key(void * opaque, int keycode)
+{
+ gamepad_state *s = (gamepad_state *)opaque;
+ int i;
+ int down;
+
+ if (keycode == 0xe0 && !s->extension) {
+ s->extension = 0x80;
+ return;
+ }
+
+ down = (keycode & 0x80) == 0;
+ keycode = (keycode & 0x7f) | s->extension;
+
+ for (i = 0; i < s->num_buttons; i++) {
+ if (s->buttons[i].keycode == keycode
+ && s->buttons[i].pressed != down) {
+ s->buttons[i].pressed = down;
+ qemu_set_irq(s->buttons[i].irq, down);
+ }
+ }
+
+ s->extension = 0;
+}
+
+/* Returns an array 5 ouput slots. */
+void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode)
+{
+ gamepad_state *s;
+ int i;
+
+ s = (gamepad_state *)qemu_mallocz(sizeof (gamepad_state));
+ s->buttons = (gamepad_button *)qemu_mallocz(n * sizeof (gamepad_button));
+ for (i = 0; i < n; i++) {
+ s->buttons[i].irq = irq[i];
+ s->buttons[i].keycode = keycode[i];
+ }
+ s->num_buttons = n;
+ qemu_add_kbd_event_handler(stellaris_gamepad_put_key, s);
+}
+
+
