| /* |
| * Copyright (C) 2010 ARM Limited. All rights reserved. |
| * |
| * Portions of this code have been modified from the original. |
| * These modifications are: |
| * * includes |
| * * enums |
| * * fb_set_swap_interval() |
| * * fb_post() |
| * * init_frame_buffer_locked() |
| * * init_frame_buffer() |
| * * fb_close() |
| * * framebuffer_device_open() |
| * |
| * 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 <string.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| #include <linux/fb.h> |
| #include <stdlib.h> |
| |
| #include <cutils/log.h> |
| #include <cutils/atomic.h> |
| #include <cutils/properties.h> |
| #include <hardware/hardware.h> |
| #include <hardware/gralloc.h> |
| |
| #include <GLES/gl.h> |
| |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| #include "gralloc_vsync_report.h" |
| #endif |
| |
| #include "gralloc_priv.h" |
| #include "gralloc_helper.h" |
| |
| #include "linux/fb.h" |
| |
| /* numbers of buffers for page flipping */ |
| #define NUM_BUFFERS 2 |
| |
| enum { |
| PAGE_FLIP = 0x00000001, |
| }; |
| |
| static int fb_set_swap_interval(struct framebuffer_device_t* dev, int interval) |
| { |
| if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) |
| return -EINVAL; |
| |
| /* Currently not implemented */ |
| return 0; |
| } |
| |
| static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) |
| { |
| if (private_handle_t::validate(buffer) < 0) |
| return -EINVAL; |
| |
| private_handle_t const* hnd = reinterpret_cast<private_handle_t const*>(buffer); |
| private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module); |
| |
| if (m->currentBuffer) { |
| m->base.unlock(&m->base, m->currentBuffer); |
| m->currentBuffer = 0; |
| } |
| |
| if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) { |
| m->base.lock(&m->base, buffer, private_module_t::PRIV_USAGE_LOCKED_FOR_POST, |
| 0, 0, m->info.xres, m->info.yres, NULL); |
| |
| const size_t offset = hnd->base - m->framebuffer->base; |
| int interrupt; |
| m->info.activate = FB_ACTIVATE_VBL; |
| m->info.yoffset = offset / m->finfo.line_length; |
| |
| #ifdef STANDARD_LINUX_SCREEN |
| #define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32) |
| #define S3CFB_SET_VSYNC_INT _IOW('F', 206, unsigned int) |
| if (ioctl(m->framebuffer->fd, FBIOPAN_DISPLAY, &m->info) == -1) { |
| ALOGE("FBIOPAN_DISPLAY failed"); |
| m->base.unlock(&m->base, buffer); |
| return 0; |
| } |
| |
| if (m->enableVSync) { |
| /* enable VSYNC */ |
| interrupt = 1; |
| if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) { |
| ALOGE("S3CFB_SET_VSYNC_INT enable failed"); |
| return 0; |
| } |
| /* wait for VSYNC */ |
| |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT); |
| #endif |
| int crtc; |
| crtc = 0; |
| if (ioctl(m->framebuffer->fd, FBIO_WAITFORVSYNC, &crtc) < 0) { |
| ALOGE("FBIO_WAITFORVSYNC failed"); |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); |
| #endif |
| return 0; |
| } |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); |
| #endif |
| // disable VSYNC |
| interrupt = 0; |
| if (ioctl(m->framebuffer->fd, S3CFB_SET_VSYNC_INT, &interrupt) < 0) { |
| ALOGE("S3CFB_SET_VSYNC_INT disable failed"); |
| return 0; |
| } |
| } |
| #else |
| /*Standard Android way*/ |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_BEGIN_WAIT); |
| #endif |
| if (ioctl(m->framebuffer->fd, FBIOPUT_VSCREENINFO, &m->info) == -1) { |
| ALOGE("FBIOPUT_VSCREENINFO failed"); |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); |
| #endif |
| m->base.unlock(&m->base, buffer); |
| return -errno; |
| } |
| #ifdef MALI_VSYNC_EVENT_REPORT_ENABLE |
| gralloc_mali_vsync_report(MALI_VSYNC_EVENT_END_WAIT); |
| #endif |
| #endif |
| |
| m->currentBuffer = buffer; |
| } else { |
| /* |
| * If we can't do the page_flip, just copy the buffer to the front |
| * FIXME: use copybit HAL instead of memcpy |
| */ |
| void* fb_vaddr; |
| void* buffer_vaddr; |
| |
| m->base.lock(&m->base, m->framebuffer, GRALLOC_USAGE_SW_WRITE_RARELY, |
| 0, 0, m->info.xres, m->info.yres, &fb_vaddr); |
| |
| m->base.lock(&m->base, buffer, GRALLOC_USAGE_SW_READ_RARELY, |
| 0, 0, m->info.xres, m->info.yres, &buffer_vaddr); |
| |
| memcpy(fb_vaddr, buffer_vaddr, m->finfo.line_length * m->info.yres); |
| |
| m->base.unlock(&m->base, buffer); |
| m->base.unlock(&m->base, m->framebuffer); |
| } |
| return 0; |
| } |
| |
| int init_frame_buffer_locked(struct private_module_t* module) |
| { |
| /* Nothing to do, already initialized */ |
| if (module->framebuffer) |
| return 0; |
| |
| char const * const device_template[] = { |
| "/dev/graphics/fb%u", |
| "/dev/fb%u", |
| NULL |
| }; |
| |
| int fd = -1; |
| int i = 0; |
| char name[64]; |
| |
| while ((fd == -1) && device_template[i]) { |
| snprintf(name, 64, device_template[i], 0); |
| fd = open(name, O_RDWR, 0); |
| i++; |
| } |
| |
| if (fd < 0) |
| return -errno; |
| |
| struct fb_fix_screeninfo finfo; |
| if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) |
| return -errno; |
| |
| struct fb_var_screeninfo info; |
| if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) |
| return -errno; |
| |
| info.reserved[0] = 0; |
| info.reserved[1] = 0; |
| info.reserved[2] = 0; |
| info.xoffset = 0; |
| info.yoffset = 0; |
| info.activate = FB_ACTIVATE_NOW; |
| |
| #ifdef GRALLOC_16_BITS |
| /* |
| * Explicitly request 5/6/5 |
| */ |
| info.bits_per_pixel = 16; |
| info.red.offset = 11; |
| info.red.length = 5; |
| info.green.offset = 5; |
| info.green.length = 6; |
| info.blue.offset = 0; |
| info.blue.length = 5; |
| info.transp.offset = 0; |
| info.transp.length = 0; |
| #else |
| /* |
| * Explicitly request 8/8/8 |
| */ |
| info.bits_per_pixel = 32; |
| info.red.offset = 16; |
| info.red.length = 8; |
| info.green.offset = 8; |
| info.green.length = 8; |
| info.blue.offset = 0; |
| info.blue.length = 8; |
| info.transp.offset = 0; |
| info.transp.length = 0; |
| #endif |
| |
| /* |
| * Request NUM_BUFFERS screens (at lest 2 for page flipping) |
| */ |
| info.yres_virtual = info.yres * NUM_BUFFERS; |
| |
| uint32_t flags = PAGE_FLIP; |
| if (ioctl(fd, FBIOPUT_VSCREENINFO, &info) == -1) { |
| info.yres_virtual = info.yres; |
| flags &= ~PAGE_FLIP; |
| ALOGW("FBIOPUT_VSCREENINFO failed, page flipping not supported"); |
| } |
| |
| if (info.yres_virtual < info.yres * 2) { |
| // we need at least 2 for page-flipping |
| info.yres_virtual = info.yres; |
| flags &= ~PAGE_FLIP; |
| ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", |
| info.yres_virtual, info.yres * 2); |
| } |
| |
| if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) |
| return -errno; |
| |
| int refreshRate = 1000000000000000LLU / |
| ( |
| uint64_t( info.upper_margin + info.lower_margin + info.vsync_len + info.yres ) |
| * ( info.left_margin + info.right_margin + info.hsync_len + info.xres ) |
| * info.pixclock |
| ); |
| |
| if (refreshRate == 0) |
| refreshRate = 60 * 1000; /* 60 Hz */ |
| |
| if (int(info.width) <= 0 || int(info.height) <= 0) { |
| /* the driver doesn't return that information. default to 160 dpi */ |
| info.width = ((info.xres * 25.4f)/160.0f + 0.5f); |
| info.height = ((info.yres * 25.4f)/160.0f + 0.5f); |
| } |
| |
| float xdpi = (info.xres * 25.4f) / info.width; |
| float ydpi = (info.yres * 25.4f) / info.height; |
| float fps = refreshRate / 1000.0f; |
| |
| ALOGI("using (fd=%d)\n" |
| "id = %s\n" |
| "xres = %d px\n" |
| "yres = %d px\n" |
| "xres_virtual = %d px\n" |
| "yres_virtual = %d px\n" |
| "bpp = %d\n" |
| "r = %2u:%u\n" |
| "g = %2u:%u\n" |
| "b = %2u:%u\n", |
| fd, |
| finfo.id, |
| info.xres, |
| info.yres, |
| info.xres_virtual, |
| info.yres_virtual, |
| info.bits_per_pixel, |
| info.red.offset, info.red.length, |
| info.green.offset, info.green.length, |
| info.blue.offset, info.blue.length); |
| |
| ALOGI("width = %d mm (%f dpi)\n" |
| "height = %d mm (%f dpi)\n" |
| "refresh rate = %.2f Hz\n", |
| info.width, xdpi, |
| info.height, ydpi, |
| fps); |
| |
| if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) |
| return -errno; |
| |
| if (finfo.smem_len <= 0) |
| return -errno; |
| |
| module->flags = flags; |
| module->info = info; |
| module->finfo = finfo; |
| module->xdpi = xdpi; |
| module->ydpi = ydpi; |
| module->fps = fps; |
| |
| char value[PROPERTY_VALUE_MAX]; |
| property_get("debug.gralloc.vsync", value, "1"); |
| module->enableVSync = atoi(value); |
| /* |
| * map the framebuffer |
| */ |
| size_t fbSize = round_up_to_page_size(finfo.line_length * info.yres_virtual); |
| void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
| if (vaddr == MAP_FAILED) { |
| ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); |
| return -errno; |
| } |
| |
| memset(vaddr, 0, fbSize); |
| |
| /* |
| * Create a "fake" buffer object for the entire frame buffer memory, |
| * and store it in the module |
| */ |
| module->framebuffer = new private_handle_t(private_handle_t::PRIV_FLAGS_FRAMEBUFFER, |
| fbSize, intptr_t(vaddr), 0, dup(fd), 0); |
| |
| module->numBuffers = info.yres_virtual / info.yres; |
| module->bufferMask = 0; |
| |
| return 0; |
| } |
| |
| int enableScreen(struct framebuffer_device_t* dev, int enable) |
| { |
| private_module_t* m = reinterpret_cast<private_module_t*>(dev->common.module); |
| |
| if (enable == 1) { |
| if (ioctl(m->framebuffer->fd, FBIOBLANK, FB_BLANK_UNBLANK) < 0) { |
| ALOGE("%s: FBIOBLANK failed : (%d:%s)", |
| __func__, m->framebuffer->fd, strerror(errno)); |
| return -EINVAL; |
| } |
| } else if (enable == 0) { |
| if (ioctl(m->framebuffer->fd, FBIOBLANK, FB_BLANK_POWERDOWN) < 0) { |
| ALOGE("%s: FBIOBLANK failed : (%d:%s)", |
| __func__, m->framebuffer->fd, strerror(errno)); |
| return -EINVAL; |
| } |
| } else { |
| return -EINVAL; |
| } |
| return 0; |
| } |
| static int init_frame_buffer(struct private_module_t* module) |
| { |
| pthread_mutex_lock(&module->lock); |
| int err = init_frame_buffer_locked(module); |
| pthread_mutex_unlock(&module->lock); |
| return err; |
| } |
| |
| static int fb_close(struct hw_device_t *device) |
| { |
| framebuffer_device_t* dev = reinterpret_cast<framebuffer_device_t*>(device); |
| if (dev) { |
| ump_close(); |
| delete dev; |
| } |
| return 0; |
| } |
| |
| int compositionComplete(struct framebuffer_device_t* dev) |
| { |
| #ifndef HWC_HWOVERLAY |
| unsigned char pixels[4]; |
| /* By doing a readpixel here we force the GL driver to start rendering |
| all the drawcalls up to this point, and to wait for the rendering to be complete. |
| Readpixel() also reads a dummy pixel, but this is not used. We only use this |
| function here to flush the render pipeline. */ |
| glReadPixels(0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixels); |
| /* The rendering of the backbuffer is now completed. |
| When SurfaceFlinger later does a call to eglSwapBuffer(), the swap will be done |
| synchronously in the same thread, and not asynchronoulsy in a background thread later. |
| The SurfaceFlinger requires this behaviour since it releases the lock on all the |
| SourceBuffers (Layers) after the compositionComplete() function returns. |
| However this "bad" behaviour by SurfaceFlinger should not affect performance, |
| since the Applications that render the SourceBuffers (Layers) still get the |
| full renderpipeline using asynchronouls rendering. So they perform at maximum speed, |
| and because of their complexity compared to the Surface flinger jobs, the Surface flinger |
| is normally faster even if it does everyhing synchronous and serial. |
| */ |
| #endif |
| return 0; |
| } |
| |
| int framebuffer_device_open(hw_module_t const* module, const char* name, hw_device_t** device) |
| { |
| int status = -EINVAL; |
| |
| alloc_device_t* gralloc_device; |
| status = gralloc_open(module, &gralloc_device); |
| if (status < 0) { |
| ALOGE("Fail to Open gralloc device"); |
| return status; |
| } |
| |
| /* initialize our state here */ |
| framebuffer_device_t *dev = (framebuffer_device_t *)malloc(sizeof(framebuffer_device_t)); |
| if (dev == NULL) { |
| ALOGE("Failed to allocate memory for dev"); |
| gralloc_close(gralloc_device); |
| return status; |
| } |
| |
| private_module_t* m = (private_module_t*)module; |
| status = init_frame_buffer(m); |
| if (status < 0) { |
| ALOGE("Fail to init framebuffer"); |
| free(dev); |
| gralloc_close(gralloc_device); |
| return status; |
| } |
| |
| memset(dev, 0, sizeof(*dev)); |
| |
| /* initialize the procs */ |
| dev->common.tag = HARDWARE_DEVICE_TAG; |
| dev->common.version = 0; |
| dev->common.module = const_cast<hw_module_t*>(module); |
| dev->common.close = fb_close; |
| dev->setSwapInterval = fb_set_swap_interval; |
| dev->post = fb_post; |
| dev->setUpdateRect = 0; |
| dev->compositionComplete = &compositionComplete; |
| dev->enableScreen = &enableScreen; |
| |
| int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); |
| const_cast<uint32_t&>(dev->flags) = 0; |
| const_cast<uint32_t&>(dev->width) = m->info.xres; |
| const_cast<uint32_t&>(dev->height) = m->info.yres; |
| const_cast<int&>(dev->stride) = stride; |
| #ifdef GRALLOC_16_BITS |
| const_cast<int&>(dev->format) = HAL_PIXEL_FORMAT_RGB_565; |
| #else |
| const_cast<int&>(dev->format) = HAL_PIXEL_FORMAT_BGRA_8888; |
| #endif |
| const_cast<float&>(dev->xdpi) = m->xdpi; |
| const_cast<float&>(dev->ydpi) = m->ydpi; |
| const_cast<float&>(dev->fps) = m->fps; |
| const_cast<int&>(dev->minSwapInterval) = 1; |
| const_cast<int&>(dev->maxSwapInterval) = 1; |
| *device = &dev->common; |
| status = 0; |
| |
| return status; |
| } |