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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 <sys/mman.h>
#include <unistd.h>
#include <adf/adf.h>
#ifdef HAS_LIBSYNC
#include <sync/sync.h>
#endif
#include "minui/minui.h"
MinuiBackendAdf::MinuiBackendAdf()
: intf_fd(-1), dev(), current_surface(0), n_surfaces(0), surfaces() {}
int MinuiBackendAdf::SurfaceInit(const drm_mode_modeinfo* mode, GRSurfaceAdf* surf) {
*surf = {};
surf->fence_fd = -1;
surf->fd = adf_interface_simple_buffer_alloc(intf_fd, mode->hdisplay, mode->vdisplay, format,
&surf->offset, &surf->pitch);
if (surf->fd < 0) {
return surf->fd;
}
surf->width = mode->hdisplay;
surf->height = mode->vdisplay;
surf->row_bytes = surf->pitch;
surf->pixel_bytes = (format == DRM_FORMAT_RGB565) ? 2 : 4;
surf->data = static_cast<uint8_t*>(
mmap(nullptr, surf->pitch * surf->height, PROT_WRITE, MAP_SHARED, surf->fd, surf->offset));
if (surf->data == MAP_FAILED) {
int saved_errno = errno;
close(surf->fd);
return -saved_errno;
}
return 0;
}
int MinuiBackendAdf::InterfaceInit() {
adf_interface_data intf_data;
int err = adf_get_interface_data(intf_fd, &intf_data);
if (err < 0) return err;
int ret = 0;
err = SurfaceInit(&intf_data.current_mode, &surfaces[0]);
if (err < 0) {
fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
ret = err;
goto done;
}
err = SurfaceInit(&intf_data.current_mode, &surfaces[1]);
if (err < 0) {
fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
surfaces[1] = {};
n_surfaces = 1;
} else {
n_surfaces = 2;
}
done:
adf_free_interface_data(&intf_data);
return ret;
}
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() {
#if defined(RECOVERY_ABGR)
format = DRM_FORMAT_ABGR8888;
#elif defined(RECOVERY_BGRA)
format = DRM_FORMAT_BGRA8888;
#elif defined(RECOVERY_RGBA)
format = DRM_FORMAT_RGBA8888;
#elif defined(RECOVERY_RGBX)
format = DRM_FORMAT_RGBX8888;
#else
format = DRM_FORMAT_RGB565;
#endif
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(__unused GRSurfaceAdf* surf) {
#ifdef HAS_LIBSYNC
static constexpr unsigned int warningTimeout = 3000;
if (surf == nullptr) return;
if (surf->fence_fd >= 0) {
int err = sync_wait(surf->fence_fd, warningTimeout);
if (err < 0) {
perror("adf sync fence wait error\n");
}
close(surf->fence_fd);
surf->fence_fd = -1;
}
#endif
}
GRSurface* MinuiBackendAdf::Flip() {
GRSurfaceAdf* 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]);
return &surfaces[current_surface];
}
void MinuiBackendAdf::Blank(bool blank) {
adf_interface_blank(intf_fd, blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
}
void MinuiBackendAdf::SurfaceDestroy(GRSurfaceAdf* surf) {
munmap(surf->data, surf->pitch * surf->height);
close(surf->fence_fd);
close(surf->fd);
}
MinuiBackendAdf::~MinuiBackendAdf() {
adf_device_close(&dev);
for (unsigned int i = 0; i < n_surfaces; i++) {
SurfaceDestroy(&surfaces[i]);
}
if (intf_fd >= 0) close(intf_fd);
}
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