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 #define S3CFB_SET_VSYNC_INT _IOW('F', 206, unsigned int)
27
gralloc_vsync_enable(framebuffer_device_t * dev)28 int gralloc_vsync_enable(framebuffer_device_t *dev)
29 {
30 private_module_t *m = reinterpret_cast<private_module_t *>(dev->common.module);
31 int interrupt = 1;
32
33 if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0)
34 {
35 return -errno;
36 }
37
38 return 0;
39 }
40
gralloc_vsync_disable(framebuffer_device_t * dev)41 int gralloc_vsync_disable(framebuffer_device_t *dev)
42 {
43 private_module_t *m = reinterpret_cast<private_module_t *>(dev->common.module);
44 int interrupt = 0;
45
46 if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0)
47 {
48 return -errno;
49 }
50
51 return 0;
52 }
53
gralloc_wait_for_vsync(framebuffer_device_t * dev)54 int gralloc_wait_for_vsync(framebuffer_device_t *dev)
55 {
56 private_module_t *m = reinterpret_cast<private_module_t *>(dev->common.module);
57
58 if (m->swapInterval)
59 {
60 int crtc = 0;
61 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT);
62
63 if (ioctl(m->framebuffer->fd, FBIO_WAITFORVSYNC, &crtc) < 0)
64 {
65 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
66 return -errno;
67 }
68
69 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT);
70 }
71
72 return 0;
73 }
74