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/*
 * Copyright (C) 2014 ARM Limited. All rights reserved.
 *
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed 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.
 */

#include <cutils/log.h>

#include "gralloc_priv.h"
#include "gralloc_vsync.h"
#include "gralloc_vsync_report.h"

#include <sys/ioctl.h>

#include <errno.h>

#define FBIO_WAITFORVSYNC       _IOW('F', 0x20, __u32)
#define S3CFB_SET_VSYNC_INT     _IOW('F', 206, unsigned int)

int gralloc_vsync_enable(framebuffer_device_t *dev)
{
    private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module);
    int interrupt = 1;
    if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) {
        return -errno;
    }

    return 0;
}

int gralloc_vsync_disable(framebuffer_device_t *dev)
{
    private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module);
    int interrupt = 0;
    if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) {
        return -errno;
    }

    return 0;
}

int gralloc_wait_for_vsync(framebuffer_device_t *dev)
{
    private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module);
    if (m->swapInterval ) {
        int crtc = 0;
        gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT);
        if (ioctl(m->framebuffer->fd, FBIO_WAITFORVSYNC, &crtc) < 0) {
            gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
            return -errno;
        }
        gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
    }

    return 0;
}