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incubator-nuttx/drivers/input/goldfish_events.c

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/****************************************************************************
* drivers/input/goldfish_events.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include <nuttx/queue.h>
#include <nuttx/kmalloc.h>
#include <nuttx/input/goldfish_events.h>
#include <nuttx/input/mouse.h>
#include <nuttx/input/touchscreen.h>
#include <nuttx/input/keyboard.h>
#include <nuttx/input/kbd_codec.h>
#include <nuttx/input/virtio-input-event-codes.h>
/****************************************************************************
* Pre-processor definitions
****************************************************************************/
#ifndef putreg32
#define putreg32(v, x) (*(FAR volatile uint32_t *)(x) = (v))
#endif
#ifndef getreg32
#define getreg32(x) (*(FAR volatile uint32_t *)(x))
#endif
/****************************************************************************
* Private Types
****************************************************************************/
enum
{
GOLDFISH_EVENTS_READ = 0x00, /* Read next event type, code or value. */
GOLDFISH_EVENTS_SET_PAGE = 0x00, /* Set page index. */
GOLDFISH_EVENTS_LEN = 0x04, /* Read length of page data. */
GOLDFISH_EVENTS_DATA = 0x08, /* Read page data. */
GOLDFISH_EVENTS_PAGE_NAME = 0x0000, /* Keyboard charmap name. */
GOLDFISH_EVENTS_PAGE_EVBITS = 0x10000, /* Event code supported sets. */
GOLDFISH_EVENTS_PAGE_ABSDATA = 0x20003 /* (really 0x20000 + EV_ABS) EV_ABS min/max values. */
};
struct goldfish_input_event
{
uint32_t type;
uint32_t code;
uint32_t value;
};
struct goldfish_events_s
{
FAR void *base;
int irq;
struct work_s work; /* Supports the interrupt handling "bottom half" */
struct mouse_lowerhalf_s mouselower; /* Mouse device lowerhalf instance */
struct mouse_report_s mousesample; /* Mouse event */
struct keyboard_lowerhalf_s keyboardlower; /* Keyboard device lowerhalf instance */
struct touch_lowerhalf_s touchlower; /* Touchpad device lowerhalf instance */
struct touch_sample_s touchsample; /* Touchpad event */
};
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int
goldfish_events_interrupt(int irq, FAR void *dev_id, FAR void *arg);
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: goldfish_events_send_keyboard_event
****************************************************************************/
static bool
goldfish_events_send_keyboard_event(FAR struct goldfish_events_s *events,
FAR struct goldfish_input_event *evt)
{
if (evt->type == EV_KEY)
{
keyboard_event(&(events->keyboardlower),
keyboard_translate_virtio_code(evt->code),
!evt->value);
return true;
}
return false;
}
/****************************************************************************
* Name: goldfish_events_send_mouse_event
****************************************************************************/
static bool
goldfish_events_send_mouse_event(FAR struct goldfish_events_s *events,
FAR struct goldfish_input_event *evt)
{
if (evt->type == EV_REL)
{
switch (evt->code)
{
case REL_X:
events->mousesample.x = evt->value;
return true;
case REL_Y:
events->mousesample.y = evt->value;
return true;
#ifdef CONFIG_INPUT_MOUSE_WHEEL
case REL_WHEEL:
events->mousesample.wheel = evt->value;
return true;
#endif
}
}
else if (evt->type == EV_KEY && evt->value != 0)
{
switch (evt->code)
{
case BTN_LEFT:
events->mousesample.buttons |= MOUSE_BUTTON_1;
return true;
case BTN_RIGHT:
events->mousesample.buttons |= MOUSE_BUTTON_2;
return true;
case BTN_MIDDLE:
events->mousesample.buttons |= MOUSE_BUTTON_3;
return true;
}
}
else if (evt->type == EV_SYN && evt->code == SYN_REPORT &&
((events->mousesample.x != 0) ||
(events->mousesample.y != 0)
#ifdef CONFIG_INPUT_MOUSE_WHEEL
|| (events->mousesample.wheel != 0)
#endif
))
{
mouse_event(events->mouselower.priv, &events->mousesample);
memset(&events->mousesample, 0, sizeof(events->mousesample));
}
return false;
}
/****************************************************************************
* Name: goldfish_events_send_touch_event
****************************************************************************/
static bool
goldfish_events_send_touch_event(FAR struct goldfish_events_s *events,
FAR struct goldfish_input_event *evt)
{
if (evt->type == EV_ABS)
{
switch (evt->code)
{
case ABS_PRESSURE:
events->touchsample.point[0].flags |= TOUCH_PRESSURE_VALID;
events->touchsample.point[0].pressure = evt->value;
return true;
case ABS_X:
events->touchsample.point[0].flags |= TOUCH_POS_VALID;
events->touchsample.point[0].x = evt->value;
return true;
case ABS_Y:
events->touchsample.point[0].flags |= TOUCH_POS_VALID;
events->touchsample.point[0].y = evt->value;
return true;
}
}
else if (evt->type == EV_KEY)
{
if (evt->code == BTN_TOUCH)
{
if (evt->value)
{
events->touchsample.point[0].flags |= TOUCH_DOWN;
}
else
{
events->touchsample.point[0].flags |= TOUCH_UP;
}
return true;
}
}
else if (evt->type == EV_SYN && evt->code == SYN_REPORT &&
((events->touchsample.point[0].pressure != 0) ||
(events->touchsample.point[0].x != 0) ||
(events->touchsample.point[0].y != 0)))
{
events->touchsample.npoints = 1;
events->touchsample.point[0].timestamp = touch_get_time();
touch_event(events->touchlower.priv, &events->touchsample);
memset(&events->touchsample, 0, sizeof(events->touchsample));
}
return false;
}
/****************************************************************************
* Name: goldfish_events_worker
****************************************************************************/
static void goldfish_events_worker(FAR void *arg)
{
FAR struct goldfish_events_s *events = (FAR struct goldfish_events_s *)arg;
struct goldfish_input_event evt;
up_enable_irq(events->irq);
evt.type = getreg32(events->base + GOLDFISH_EVENTS_READ);
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
evt.code = getreg32(events->base + GOLDFISH_EVENTS_READ);
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
evt.value = getreg32(events->base + GOLDFISH_EVENTS_READ);
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
iinfo("goldfish_events_interrupt events(%" PRIu32 ", %" PRIu32 ", \
%" PRIu32 ").\n", evt.type, evt.code, evt.value);
if (goldfish_events_send_touch_event(events, &evt))
{
return;
}
if (goldfish_events_send_mouse_event(events, &evt))
{
return;
}
goldfish_events_send_keyboard_event(events, &evt);
}
/****************************************************************************
* Name: goldfish_events_interrupt
****************************************************************************/
static int
goldfish_events_interrupt(int irq, FAR void *dev_id, FAR void *arg)
{
FAR struct goldfish_events_s *events = arg;
work_queue(HPWORK, &events->work, goldfish_events_worker, events, 0);
up_disable_irq(events->irq);
return 0;
}
/****************************************************************************
* Name: goldfish_drivers_register
****************************************************************************/
static void goldfish_drivers_register(FAR struct goldfish_events_s *events)
{
putreg32(GOLDFISH_EVENTS_PAGE_EVBITS | EV_KEY,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
keyboard_register(&(events->keyboardlower),
"/dev/kbd0",
CONFIG_INPUT_GOLDFISH_NBUFFER);
}
}
putreg32(GOLDFISH_EVENTS_PAGE_EVBITS | EV_REL,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
mouse_register(&(events->mouselower),
"/dev/mouse0",
CONFIG_INPUT_GOLDFISH_NBUFFER);
}
}
putreg32(GOLDFISH_EVENTS_PAGE_EVBITS | EV_ABS,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
putreg32(GOLDFISH_EVENTS_PAGE_ABSDATA,
events->base + GOLDFISH_EVENTS_SET_PAGE);
if (getreg32(events->base + GOLDFISH_EVENTS_LEN))
{
touch_register(&(events->touchlower),
"/dev/input0",
CONFIG_INPUT_GOLDFISH_NBUFFER);
}
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: goldfish_events_register
****************************************************************************/
int goldfish_events_register(FAR void *base, int irq)
{
FAR struct goldfish_events_s *events;
int ret;
events = (FAR struct goldfish_events_s *)kmm_zalloc(sizeof(*events));
if (events == NULL)
{
return -ENOMEM;
}
events->base = base;
events->irq = irq;
ret = irq_attach(events->irq, goldfish_events_interrupt, events);
if (ret < 0)
{
goto err_free_events;
}
/* Register lower half drivers */
goldfish_drivers_register(events);
up_enable_irq(events->irq);
return 0;
err_free_events:
kmm_free(events);
return ret;
}
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