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5f8d505e3a
Currently for each button on the device we have a StellarisGamepadButton struct which has the irq, keycode and pressed state for it. When we convert to qdev, the qdev property and GPIO APIs are going to require that we have separate arrays for the irqs and keycodes. Convert from array-of-structs to three separate arrays in preparation. This is a migration compatibility break for the stellaris boards (lm3s6965evb, lm3s811evb). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20231030114802.3671871-5-peter.maydell@linaro.org -- v1=>v2: mention migration compat break in commit message; bump version fields in vmstate
78 lines
2 KiB
C
78 lines
2 KiB
C
/*
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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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* This code is licensed under the GPL.
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*/
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#include "qemu/osdep.h"
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#include "hw/input/stellaris_gamepad.h"
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#include "hw/irq.h"
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#include "migration/vmstate.h"
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#include "ui/console.h"
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typedef struct {
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uint32_t num_buttons;
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int extension;
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qemu_irq *irqs;
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uint32_t *keycodes;
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uint8_t *pressed;
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} StellarisGamepad;
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static void stellaris_gamepad_put_key(void * opaque, int keycode)
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{
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StellarisGamepad *s = (StellarisGamepad *)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->keycodes[i] == keycode && s->pressed[i] != down) {
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s->pressed[i] = down;
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qemu_set_irq(s->irqs[i], down);
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}
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}
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s->extension = 0;
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}
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static const VMStateDescription vmstate_stellaris_gamepad = {
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.name = "stellaris_gamepad",
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.version_id = 3,
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.minimum_version_id = 3,
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.fields = (VMStateField[]) {
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VMSTATE_INT32(extension, StellarisGamepad),
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VMSTATE_VARRAY_UINT32(pressed, StellarisGamepad, num_buttons,
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0, vmstate_info_uint8, uint8_t),
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VMSTATE_END_OF_LIST()
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}
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};
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/* Returns an array of 5 output slots. */
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void stellaris_gamepad_init(int n, qemu_irq *irq, const int *keycode)
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{
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StellarisGamepad *s;
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int i;
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s = g_new0(StellarisGamepad, 1);
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s->irqs = g_new0(qemu_irq, n);
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s->keycodes = g_new0(uint32_t, n);
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s->pressed = g_new0(uint8_t, n);
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for (i = 0; i < n; i++) {
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s->irqs[i] = irq[i];
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s->keycodes[i] = 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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vmstate_register(NULL, VMSTATE_INSTANCE_ID_ANY,
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&vmstate_stellaris_gamepad, s);
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}
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