1 files changed, 99 insertions, 0 deletions
diff --git a/hw/input/stellaris_gamepad.c b/hw/input/stellaris_gamepad.c
new file mode 100644
index 0000000000..06a0c0ce83
--- /dev/null
+++ b/hw/input/stellaris_gamepad.c
@@ -0,0 +1,99 @@
+/*
+ * Gamepad style buttons connected to IRQ/GPIO lines
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/input/stellaris_gamepad.h"
+#include "hw/irq.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+#include "ui/console.h"
+
+static void stellaris_gamepad_event(DeviceState *dev, QemuConsole *src,
+                                    InputEvent *evt)
+{
+    StellarisGamepad *s = STELLARIS_GAMEPAD(dev);
+    InputKeyEvent *key = evt->u.key.data;
+    int qcode = qemu_input_key_value_to_qcode(key->key);
+    int i;
+
+    for (i = 0; i < s->num_buttons; i++) {
+        if (s->keycodes[i] == qcode && s->pressed[i] != key->down) {
+            s->pressed[i] = key->down;
+            qemu_set_irq(s->irqs[i], key->down);
+        }
+    }
+}
+
+static const VMStateDescription vmstate_stellaris_gamepad = {
+    .name = "stellaris_gamepad",
+    .version_id = 4,
+    .minimum_version_id = 4,
+    .fields = (VMStateField[]) {
+        VMSTATE_VARRAY_UINT32(pressed, StellarisGamepad, num_buttons,
+                              0, vmstate_info_uint8, uint8_t),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const QemuInputHandler stellaris_gamepad_handler = {
+    .name = "Stellaris Gamepad",
+    .mask = INPUT_EVENT_MASK_KEY,
+    .event = stellaris_gamepad_event,
+};
+
+static void stellaris_gamepad_realize(DeviceState *dev, Error **errp)
+{
+    StellarisGamepad *s = STELLARIS_GAMEPAD(dev);
+
+    if (s->num_buttons == 0) {
+        error_setg(errp, "keycodes property array must be set");
+        return;
+    }
+
+    s->irqs = g_new0(qemu_irq, s->num_buttons);
+    s->pressed = g_new0(uint8_t, s->num_buttons);
+    qdev_init_gpio_out(dev, s->irqs, s->num_buttons);
+    qemu_input_handler_register(dev, &stellaris_gamepad_handler);
+}
+
+static void stellaris_gamepad_reset_enter(Object *obj, ResetType type)
+{
+    StellarisGamepad *s = STELLARIS_GAMEPAD(obj);
+
+    memset(s->pressed, 0, s->num_buttons * sizeof(uint8_t));
+}
+
+static Property stellaris_gamepad_properties[] = {
+    DEFINE_PROP_ARRAY("keycodes", StellarisGamepad, num_buttons,
+                      keycodes, qdev_prop_uint32, uint32_t),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void stellaris_gamepad_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
+
+    rc->phases.enter = stellaris_gamepad_reset_enter;
+    dc->realize = stellaris_gamepad_realize;
+    dc->vmsd = &vmstate_stellaris_gamepad;
+    device_class_set_props(dc, stellaris_gamepad_properties);
+}
+
+static const TypeInfo stellaris_gamepad_info[] = {
+    {
+        .name = TYPE_STELLARIS_GAMEPAD,
+        .parent = TYPE_SYS_BUS_DEVICE,
+        .instance_size = sizeof(StellarisGamepad),
+        .class_init = stellaris_gamepad_class_init,
+    },
+};
+
+DEFINE_TYPES(stellaris_gamepad_info);