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/*
* Copyright (C) 2014 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 "graphics_adf.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <adf/adf.h>
#include <sync/sync.h>
#include "minui/minui.h"
GRSurfaceAdf::~GRSurfaceAdf() {
if (mmapped_buffer_) {
munmap(mmapped_buffer_, pitch * height);
}
if (fence_fd != -1) {
close(fence_fd);
}
if (fd != -1) {
close(fd);
}
}
std::unique_ptr<GRSurfaceAdf> GRSurfaceAdf::Create(int intf_fd, const drm_mode_modeinfo* mode,
__u32 format, int* err) {
__u32 offset;
__u32 pitch;
auto fd = adf_interface_simple_buffer_alloc(intf_fd, mode->hdisplay, mode->vdisplay, format,
&offset, &pitch);
if (fd < 0) {
*err = fd;
return nullptr;
}
std::unique_ptr<GRSurfaceAdf> surf = std::unique_ptr<GRSurfaceAdf>(
new GRSurfaceAdf(mode->hdisplay, mode->vdisplay, pitch, (format == DRM_FORMAT_RGB565 ? 2 : 4),
offset, pitch, fd));
auto mmapped =
mmap(nullptr, surf->pitch * surf->height, PROT_WRITE, MAP_SHARED, surf->fd, surf->offset);
if (mmapped == MAP_FAILED) {
*err = -errno;
return nullptr;
}
surf->mmapped_buffer_ = static_cast<uint8_t*>(mmapped);
return surf;
}
MinuiBackendAdf::MinuiBackendAdf() : intf_fd(-1), dev(), current_surface(0), n_surfaces(0) {}
int MinuiBackendAdf::InterfaceInit() {
adf_interface_data intf_data;
if (int err = adf_get_interface_data(intf_fd, &intf_data); err < 0) return err;
int result = 0;
surfaces[0] = GRSurfaceAdf::Create(intf_fd, &intf_data.current_mode, format, &result);
if (!surfaces[0]) {
fprintf(stderr, "Failed to allocate surface 0: %s\n", strerror(-result));
goto done;
}
surfaces[1] = GRSurfaceAdf::Create(intf_fd, &intf_data.current_mode, format, &result);
if (!surfaces[1]) {
fprintf(stderr, "Failed to allocate surface 1: %s\n", strerror(-result));
n_surfaces = 1;
} else {
n_surfaces = 2;
}
done:
adf_free_interface_data(&intf_data);
return result;
}
int MinuiBackendAdf::DeviceInit(adf_device* dev) {
adf_id_t intf_id;
int err = adf_find_simple_post_configuration(dev, &format, 1, &intf_id, &eng_id);
if (err < 0) return err;
err = adf_device_attach(dev, eng_id, intf_id);
if (err < 0 && err != -EALREADY) return err;
intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
if (intf_fd < 0) return intf_fd;
err = InterfaceInit();
if (err < 0) {
close(intf_fd);
intf_fd = -1;
}
return err;
}
GRSurface* MinuiBackendAdf::Init() {
PixelFormat pixel_format = gr_pixel_format();
if (pixel_format == PixelFormat::ABGR) {
format = DRM_FORMAT_ABGR8888;
} else if (pixel_format == PixelFormat::BGRA) {
format = DRM_FORMAT_BGRA8888;
} else if (pixel_format == PixelFormat::RGBX) {
format = DRM_FORMAT_RGBX8888;
} else {
format = DRM_FORMAT_RGB565;
}
adf_id_t* dev_ids = nullptr;
ssize_t n_dev_ids = adf_devices(&dev_ids);
if (n_dev_ids == 0) {
return nullptr;
} else if (n_dev_ids < 0) {
fprintf(stderr, "enumerating adf devices failed: %s\n", strerror(-n_dev_ids));
return nullptr;
}
intf_fd = -1;
for (ssize_t i = 0; i < n_dev_ids && intf_fd < 0; i++) {
int err = adf_device_open(dev_ids[i], O_RDWR, &dev);
if (err < 0) {
fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i], strerror(-err));
continue;
}
err = DeviceInit(&dev);
if (err < 0) {
fprintf(stderr, "initializing adf device %u failed: %s\n", dev_ids[i], strerror(-err));
adf_device_close(&dev);
}
}
free(dev_ids);
if (intf_fd < 0) return nullptr;
GRSurface* ret = Flip();
Blank(true);
Blank(false);
return ret;
}
void MinuiBackendAdf::Sync(GRSurfaceAdf* surf) {
static constexpr unsigned int kWarningTimeout = 3000;
if (surf == nullptr) return;
if (surf->fence_fd >= 0) {
int err = sync_wait(surf->fence_fd, kWarningTimeout);
if (err < 0) {
perror("adf sync fence wait error\n");
}
close(surf->fence_fd);
surf->fence_fd = -1;
}
}
GRSurface* MinuiBackendAdf::Flip() {
const auto& surf = surfaces[current_surface];
int fence_fd = adf_interface_simple_post(intf_fd, eng_id, surf->width, surf->height, format,
surf->fd, surf->offset, surf->pitch, -1);
if (fence_fd >= 0) surf->fence_fd = fence_fd;
current_surface = (current_surface + 1) % n_surfaces;
Sync(surfaces[current_surface].get());
return surfaces[current_surface].get();
}
void MinuiBackendAdf::Blank(bool blank) {
adf_interface_blank(intf_fd, blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
}
MinuiBackendAdf::~MinuiBackendAdf() {
adf_device_close(&dev);
if (intf_fd >= 0) close(intf_fd);
}
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