1/*
2 * Copyright (C) 2014 ARM Limited. All rights reserved.
3 *
4 * Copyright (C) 2008 The Android Open Source Project
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * You may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 *      http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19#include "gralloc_priv.h"
20#include "gralloc_vsync.h"
21#include "gralloc_vsync_report.h"
22#include <sys/ioctl.h>
23#include <errno.h>
24
25#define FBIO_WAITFORVSYNC       _IOW('F', 0x20, __u32)
26
27int gralloc_vsync_enable(framebuffer_device_t *dev)
28{
29	GRALLOC_UNUSED(dev);
30	return 0;
31}
32
33int gralloc_vsync_disable(framebuffer_device_t *dev)
34{
35	GRALLOC_UNUSED(dev);
36	return 0;
37}
38
39int gralloc_wait_for_vsync(framebuffer_device_t *dev)
40{
41	private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module);
42	if (MALI_DPY_TYPE_CLCD == m->dpy_type || MALI_DPY_TYPE_HDLCD == m->dpy_type)
43	{
44		/* Silently ignore wait for vsync as neither PL111 nor HDLCD implement this IOCTL. */
45		return 0;
46	}
47
48	if ( m->swapInterval )
49	{
50		int crtc = 0;
51		gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT);
52		if(ioctl(m->framebuffer->shallow_fbdev_fd, FBIO_WAITFORVSYNC, &crtc) < 0)
53		{
54			gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
55			return -errno;
56		}
57		gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
58	}
59	return 0;
60}
61