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 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 if(ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) return -errno; 33 return 0; 34 } 35 36 int gralloc_vsync_disable(framebuffer_device_t *dev) 37 { 38 private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module); 39 int interrupt = 0; 40 if(ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) return -errno; 41 return 0; 42 } 43 44 int gralloc_wait_for_vsync(framebuffer_device_t *dev) 45 { 46 private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module); 47 if ( m->swapInterval ) 48 { 49 int crtc = 0; 50 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT); 51 if(ioctl(m->framebuffer->fd, FBIO_WAITFORVSYNC, &crtc) < 0) 52 { 53 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); 54 return -errno; 55 } 56 gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); 57 } 58 return 0; 59 } 60
