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 27 int gralloc_vsync_enable(framebuffer_device_t *dev) 28 { 29 GRALLOC_UNUSED(dev); 30 return 0; 31 } 32 33 int gralloc_vsync_disable(framebuffer_device_t *dev) 34 { 35 GRALLOC_UNUSED(dev); 36 return 0; 37 } 38 39 int 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
