mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
8063396bf3
This converts existing DECLARE_INSTANCE_CHECKER usage to OBJECT_DECLARE_SIMPLE_TYPE when possible. $ ./scripts/codeconverter/converter.py -i \ --pattern=AddObjectDeclareSimpleType $(git grep -l '' -- '*.[ch]') Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Paul Durrant <paul@xen.org> Message-Id: <20200916182519.415636-6-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/*
|
|
* GPIO key
|
|
*
|
|
* Copyright (c) 2016 Linaro Limited
|
|
*
|
|
* Author: Shannon Zhao <shannon.zhao@linaro.org>
|
|
*
|
|
* Emulate a (human) keypress -- when the key is triggered by
|
|
* setting the incoming gpio line, the outbound irq line is
|
|
* raised for 100ms before being dropped again.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/irq.h"
|
|
#include "hw/sysbus.h"
|
|
#include "migration/vmstate.h"
|
|
#include "qemu/module.h"
|
|
#include "qemu/timer.h"
|
|
#include "qom/object.h"
|
|
|
|
#define TYPE_GPIOKEY "gpio-key"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(GPIOKEYState, GPIOKEY)
|
|
#define GPIO_KEY_LATENCY 100 /* 100ms */
|
|
|
|
struct GPIOKEYState {
|
|
SysBusDevice parent_obj;
|
|
|
|
QEMUTimer *timer;
|
|
qemu_irq irq;
|
|
};
|
|
|
|
static const VMStateDescription vmstate_gpio_key = {
|
|
.name = "gpio-key",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_TIMER_PTR(timer, GPIOKEYState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static void gpio_key_reset(DeviceState *dev)
|
|
{
|
|
GPIOKEYState *s = GPIOKEY(dev);
|
|
|
|
timer_del(s->timer);
|
|
}
|
|
|
|
static void gpio_key_timer_expired(void *opaque)
|
|
{
|
|
GPIOKEYState *s = (GPIOKEYState *)opaque;
|
|
|
|
qemu_set_irq(s->irq, 0);
|
|
timer_del(s->timer);
|
|
}
|
|
|
|
static void gpio_key_set_irq(void *opaque, int irq, int level)
|
|
{
|
|
GPIOKEYState *s = (GPIOKEYState *)opaque;
|
|
|
|
qemu_set_irq(s->irq, 1);
|
|
timer_mod(s->timer,
|
|
qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + GPIO_KEY_LATENCY);
|
|
}
|
|
|
|
static void gpio_key_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
GPIOKEYState *s = GPIOKEY(dev);
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
|
|
|
|
sysbus_init_irq(sbd, &s->irq);
|
|
qdev_init_gpio_in(dev, gpio_key_set_irq, 1);
|
|
s->timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, gpio_key_timer_expired, s);
|
|
}
|
|
|
|
static void gpio_key_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->realize = gpio_key_realize;
|
|
dc->vmsd = &vmstate_gpio_key;
|
|
dc->reset = &gpio_key_reset;
|
|
}
|
|
|
|
static const TypeInfo gpio_key_info = {
|
|
.name = TYPE_GPIOKEY,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(GPIOKEYState),
|
|
.class_init = gpio_key_class_init,
|
|
};
|
|
|
|
static void gpio_key_register_types(void)
|
|
{
|
|
type_register_static(&gpio_key_info);
|
|
}
|
|
|
|
type_init(gpio_key_register_types)
|