2007-11-18 15:36:08 +01:00
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/*
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* Gamepad style buttons connected to IRQ/GPIO lines
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*
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* Copyright (c) 2007 CodeSourcery.
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* Written by Paul Brook
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*
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2011-06-26 04:21:35 +02:00
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* This code is licensed under the GPL.
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2007-11-18 15:36:08 +01:00
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*/
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2016-01-26 19:17:05 +01:00
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#include "qemu/osdep.h"
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2013-02-04 15:40:22 +01:00
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#include "hw/hw.h"
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2019-04-12 18:54:11 +02:00
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#include "hw/input/gamepad.h"
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2012-11-28 12:06:30 +01:00
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#include "ui/console.h"
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2007-11-18 15:36:08 +01:00
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typedef struct {
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qemu_irq irq;
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int keycode;
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2010-12-02 02:36:38 +01:00
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uint8_t pressed;
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2007-11-18 15:36:08 +01:00
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} gamepad_button;
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typedef struct {
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gamepad_button *buttons;
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int num_buttons;
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int extension;
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} gamepad_state;
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static void stellaris_gamepad_put_key(void * opaque, int keycode)
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{
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gamepad_state *s = (gamepad_state *)opaque;
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int i;
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int down;
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if (keycode == 0xe0 && !s->extension) {
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s->extension = 0x80;
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return;
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}
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down = (keycode & 0x80) == 0;
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keycode = (keycode & 0x7f) | s->extension;
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for (i = 0; i < s->num_buttons; i++) {
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if (s->buttons[i].keycode == keycode
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&& s->buttons[i].pressed != down) {
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s->buttons[i].pressed = down;
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qemu_set_irq(s->buttons[i].irq, down);
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}
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}
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s->extension = 0;
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}
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2010-12-02 02:36:38 +01:00
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static const VMStateDescription vmstate_stellaris_button = {
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.name = "stellaris_button",
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.version_id = 0,
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.minimum_version_id = 0,
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2014-05-13 17:09:35 +02:00
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.fields = (VMStateField[]) {
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2010-12-02 02:36:38 +01:00
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VMSTATE_UINT8(pressed, gamepad_button),
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VMSTATE_END_OF_LIST()
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}
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};
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2008-07-02 18:48:32 +02:00
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2010-12-02 02:36:38 +01:00
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static const VMStateDescription vmstate_stellaris_gamepad = {
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.name = "stellaris_gamepad",
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.version_id = 1,
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.minimum_version_id = 1,
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2014-05-13 17:09:35 +02:00
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.fields = (VMStateField[]) {
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2010-12-02 02:36:38 +01:00
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VMSTATE_INT32(extension, gamepad_state),
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VMSTATE_STRUCT_VARRAY_INT32(buttons, gamepad_state, num_buttons, 0,
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vmstate_stellaris_button, gamepad_button),
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VMSTATE_END_OF_LIST()
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}
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};
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2008-07-02 18:48:32 +02:00
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2015-09-08 23:45:14 +02:00
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/* Returns an array of 5 output slots. */
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2007-11-18 15:36:08 +01:00
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void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode)
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{
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gamepad_state *s;
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int i;
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arm: Use g_new() & friends where that makes obvious sense
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer,
for two reasons. One, it catches multiplication overflowing size_t.
Two, it returns T * rather than void *, which lets the compiler catch
more type errors.
This commit only touches allocations with size arguments of the form
sizeof(T).
Coccinelle semantic patch:
@@
type T;
@@
-g_malloc(sizeof(T))
+g_new(T, 1)
@@
type T;
@@
-g_try_malloc(sizeof(T))
+g_try_new(T, 1)
@@
type T;
@@
-g_malloc0(sizeof(T))
+g_new0(T, 1)
@@
type T;
@@
-g_try_malloc0(sizeof(T))
+g_try_new0(T, 1)
@@
type T;
expression n;
@@
-g_malloc(sizeof(T) * (n))
+g_new(T, n)
@@
type T;
expression n;
@@
-g_try_malloc(sizeof(T) * (n))
+g_try_new(T, n)
@@
type T;
expression n;
@@
-g_malloc0(sizeof(T) * (n))
+g_new0(T, n)
@@
type T;
expression n;
@@
-g_try_malloc0(sizeof(T) * (n))
+g_try_new0(T, n)
@@
type T;
expression p, n;
@@
-g_realloc(p, sizeof(T) * (n))
+g_renew(T, p, n)
@@
type T;
expression p, n;
@@
-g_try_realloc(p, sizeof(T) * (n))
+g_try_renew(T, p, n)
@@
type T;
expression n;
@@
-(T *)g_new(T, n)
+g_new(T, n)
@@
type T;
expression n;
@@
-(T *)g_new0(T, n)
+g_new0(T, n)
@@
type T;
expression p, n;
@@
-(T *)g_renew(T, p, n)
+g_renew(T, p, n)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1440524394-15640-1-git-send-email-armbru@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-07 11:39:27 +02:00
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s = g_new0(gamepad_state, 1);
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s->buttons = g_new0(gamepad_button, n);
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2007-11-18 15:36:08 +01:00
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for (i = 0; i < n; i++) {
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s->buttons[i].irq = irq[i];
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s->buttons[i].keycode = keycode[i];
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}
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s->num_buttons = n;
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qemu_add_kbd_event_handler(stellaris_gamepad_put_key, s);
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2010-12-02 02:36:38 +01:00
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vmstate_register(NULL, -1, &vmstate_stellaris_gamepad, s);
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2007-11-18 15:36:08 +01:00
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}
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