2 * Gamepad style buttons connected to IRQ/GPIO lines
4 * Copyright (c) 2007 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licensed under the GPL.
9 #include "qemu/osdep.h"
11 #include "hw/input/gamepad.h"
12 #include "ui/console.h"
21 gamepad_button
*buttons
;
26 static void stellaris_gamepad_put_key(void * opaque
, int keycode
)
28 gamepad_state
*s
= (gamepad_state
*)opaque
;
32 if (keycode
== 0xe0 && !s
->extension
) {
37 down
= (keycode
& 0x80) == 0;
38 keycode
= (keycode
& 0x7f) | s
->extension
;
40 for (i
= 0; i
< s
->num_buttons
; i
++) {
41 if (s
->buttons
[i
].keycode
== keycode
42 && s
->buttons
[i
].pressed
!= down
) {
43 s
->buttons
[i
].pressed
= down
;
44 qemu_set_irq(s
->buttons
[i
].irq
, down
);
51 static const VMStateDescription vmstate_stellaris_button
= {
52 .name
= "stellaris_button",
54 .minimum_version_id
= 0,
55 .fields
= (VMStateField
[]) {
56 VMSTATE_UINT8(pressed
, gamepad_button
),
61 static const VMStateDescription vmstate_stellaris_gamepad
= {
62 .name
= "stellaris_gamepad",
64 .minimum_version_id
= 2,
65 .fields
= (VMStateField
[]) {
66 VMSTATE_INT32(extension
, gamepad_state
),
67 VMSTATE_STRUCT_VARRAY_POINTER_INT32(buttons
, gamepad_state
,
69 vmstate_stellaris_button
,
75 /* Returns an array of 5 output slots. */
76 void stellaris_gamepad_init(int n
, qemu_irq
*irq
, const int *keycode
)
81 s
= g_new0(gamepad_state
, 1);
82 s
->buttons
= g_new0(gamepad_button
, n
);
83 for (i
= 0; i
< n
; i
++) {
84 s
->buttons
[i
].irq
= irq
[i
];
85 s
->buttons
[i
].keycode
= keycode
[i
];
88 qemu_add_kbd_event_handler(stellaris_gamepad_put_key
, s
);
89 vmstate_register(NULL
, -1, &vmstate_stellaris_gamepad
, s
);