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Commit | Line | Data |
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cf0dbb21 PB |
1 | /* |
2 | * Gamepad style buttons connected to IRQ/GPIO lines | |
3 | * | |
4 | * Copyright (c) 2007 CodeSourcery. | |
5 | * Written by Paul Brook | |
6 | * | |
8e31bf38 | 7 | * This code is licensed under the GPL. |
cf0dbb21 | 8 | */ |
64552b6b | 9 | |
8ef94f0b | 10 | #include "qemu/osdep.h" |
98fa3327 | 11 | #include "hw/input/gamepad.h" |
64552b6b | 12 | #include "hw/irq.h" |
d6454270 | 13 | #include "migration/vmstate.h" |
28ecbaee | 14 | #include "ui/console.h" |
cf0dbb21 PB |
15 | |
16 | typedef struct { | |
17 | qemu_irq irq; | |
18 | int keycode; | |
4483c7ac | 19 | uint8_t pressed; |
cf0dbb21 PB |
20 | } gamepad_button; |
21 | ||
22 | typedef struct { | |
23 | gamepad_button *buttons; | |
24 | int num_buttons; | |
25 | int extension; | |
26 | } gamepad_state; | |
27 | ||
28 | static void stellaris_gamepad_put_key(void * opaque, int keycode) | |
29 | { | |
30 | gamepad_state *s = (gamepad_state *)opaque; | |
31 | int i; | |
32 | int down; | |
33 | ||
34 | if (keycode == 0xe0 && !s->extension) { | |
35 | s->extension = 0x80; | |
36 | return; | |
37 | } | |
38 | ||
39 | down = (keycode & 0x80) == 0; | |
40 | keycode = (keycode & 0x7f) | s->extension; | |
41 | ||
42 | for (i = 0; i < s->num_buttons; i++) { | |
43 | if (s->buttons[i].keycode == keycode | |
44 | && s->buttons[i].pressed != down) { | |
45 | s->buttons[i].pressed = down; | |
46 | qemu_set_irq(s->buttons[i].irq, down); | |
47 | } | |
48 | } | |
49 | ||
50 | s->extension = 0; | |
51 | } | |
52 | ||
4483c7ac JQ |
53 | static const VMStateDescription vmstate_stellaris_button = { |
54 | .name = "stellaris_button", | |
55 | .version_id = 0, | |
56 | .minimum_version_id = 0, | |
8f1e884b | 57 | .fields = (VMStateField[]) { |
4483c7ac JQ |
58 | VMSTATE_UINT8(pressed, gamepad_button), |
59 | VMSTATE_END_OF_LIST() | |
60 | } | |
61 | }; | |
23e39294 | 62 | |
4483c7ac JQ |
63 | static const VMStateDescription vmstate_stellaris_gamepad = { |
64 | .name = "stellaris_gamepad", | |
372e458e PM |
65 | .version_id = 2, |
66 | .minimum_version_id = 2, | |
8f1e884b | 67 | .fields = (VMStateField[]) { |
4483c7ac | 68 | VMSTATE_INT32(extension, gamepad_state), |
372e458e PM |
69 | VMSTATE_STRUCT_VARRAY_POINTER_INT32(buttons, gamepad_state, |
70 | num_buttons, | |
71 | vmstate_stellaris_button, | |
72 | gamepad_button), | |
4483c7ac JQ |
73 | VMSTATE_END_OF_LIST() |
74 | } | |
75 | }; | |
23e39294 | 76 | |
67cc32eb | 77 | /* Returns an array of 5 output slots. */ |
cf0dbb21 PB |
78 | void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode) |
79 | { | |
80 | gamepad_state *s; | |
81 | int i; | |
82 | ||
b45c03f5 MA |
83 | s = g_new0(gamepad_state, 1); |
84 | s->buttons = g_new0(gamepad_button, n); | |
cf0dbb21 PB |
85 | for (i = 0; i < n; i++) { |
86 | s->buttons[i].irq = irq[i]; | |
87 | s->buttons[i].keycode = keycode[i]; | |
88 | } | |
89 | s->num_buttons = n; | |
90 | qemu_add_kbd_event_handler(stellaris_gamepad_put_key, s); | |
1df2c9a2 PX |
91 | vmstate_register(NULL, VMSTATE_INSTANCE_ID_ANY, |
92 | &vmstate_stellaris_gamepad, s); | |
cf0dbb21 | 93 | } |