diff options
Diffstat (limited to 'exynos4/hal/libgralloc_ump/framebuffer_device.cpp')
| -rw-r--r-- | exynos4/hal/libgralloc_ump/framebuffer_device.cpp | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/exynos4/hal/libgralloc_ump/framebuffer_device.cpp b/exynos4/hal/libgralloc_ump/framebuffer_device.cpp new file mode 100644 index 0000000..9413112 --- /dev/null +++ b/exynos4/hal/libgralloc_ump/framebuffer_device.cpp @@ -0,0 +1,465 @@ +/* + * 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) { + LOGE("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) { + LOGE("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) { + LOGE("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) { + LOGE("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) { + LOGE("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; + LOGW("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; + LOGW("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.yres ) + * ( info.left_margin + info.right_margin + 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; + + LOGI("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); + + LOGI("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[32]; + 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) { + LOGE("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) { + LOGE("%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) { + LOGE("%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) + return status; + + private_module_t* m = (private_module_t*)module; + status = init_frame_buffer(m); + if (status < 0) { + gralloc_close(gralloc_device); + return status; + } + + /* initialize our state here */ + framebuffer_device_t *dev = new framebuffer_device_t; + 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; +} |