/*
* 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 <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/cdefs.h>
#include <sys/mman.h>
#include <adf/adf.h>
#include "graphics.h"
#include <pixelflinger/pixelflinger.h>
struct adf_surface_pdata {
GRSurface base;
int fd;
__u32 offset;
__u32 pitch;
unsigned char* adf_data;
};
struct adf_pdata {
minui_backend base;
int intf_fd;
adf_id_t eng_id;
__u32 format;
unsigned int current_surface;
unsigned int n_surfaces;
adf_surface_pdata surfaces[2];
};
static GRSurface* adf_flip(minui_backend *backend);
static void adf_blank(minui_backend *backend, bool blank);
static int adf_surface_init(adf_pdata *pdata, drm_mode_modeinfo *mode, adf_surface_pdata *surf) {
memset(surf, 0, sizeof(*surf));
surf->fd = adf_interface_simple_buffer_alloc(pdata->intf_fd, mode->hdisplay,
mode->vdisplay, pdata->format, &surf->offset, &surf->pitch);
if (surf->fd < 0)
return surf->fd;
surf->base.width = mode->hdisplay;
surf->base.height = mode->vdisplay;
surf->base.row_bytes = surf->pitch;
surf->base.pixel_bytes = (pdata->format == DRM_FORMAT_RGB565) ? 2 : 4;
if (pdata->format == DRM_FORMAT_ABGR8888)
surf->base.format = GGL_PIXEL_FORMAT_BGRA_8888;
else if (pdata->format == DRM_FORMAT_BGRA8888)
surf->base.format = GGL_PIXEL_FORMAT_BGRA_8888;
else if (pdata->format == DRM_FORMAT_RGBA8888)
surf->base.format = GGL_PIXEL_FORMAT_RGBA_8888;
else if (pdata->format == DRM_FORMAT_RGBX8888)
surf->base.format = GGL_PIXEL_FORMAT_RGBX_8888;
else
surf->base.format = GGL_PIXEL_FORMAT_RGB_565;
surf->adf_data = reinterpret_cast<uint8_t*>(mmap(NULL,
surf->pitch * surf->base.height, PROT_WRITE,
MAP_SHARED, surf->fd, surf->offset));
if (surf->adf_data == MAP_FAILED) {
close(surf->fd);
return -errno;
}
return 0;
}
static int adf_interface_init(adf_pdata *pdata)
{
adf_interface_data intf_data;
int ret = 0;
int err;
unsigned char* framebuffer_data = NULL;
err = adf_get_interface_data(pdata->intf_fd, &intf_data);
if (err < 0)
return err;
err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[0]);
if (err < 0) {
fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
ret = err;
goto done;
}
/* Allocate a single buffer for drawing. graphics.cpp will draw to
* this buffer which will later be copied to the mmapped adf buffer.
* Using a regular memory buffer improves performance by about 10x. */
framebuffer_data = (unsigned char*)calloc(pdata->surfaces[0].pitch * pdata->surfaces[0].base.height, 1);
if (framebuffer_data == NULL) {
printf("failed to calloc surface data\n");
close(pdata->surfaces[0].fd);
munmap(pdata->surfaces[0].adf_data, pdata->surfaces[0].pitch * pdata->surfaces[0].base.height);
ret = -1;
goto done;
}
pdata->surfaces[0].base.data = framebuffer_data;
err = adf_surface_init(pdata, &intf_data.current_mode,
&pdata->surfaces[1]);
if (err < 0) {
fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
memset(&pdata->surfaces[1], 0, sizeof(pdata->surfaces[1]));
pdata->n_surfaces = 1;
} else {
pdata->n_surfaces = 2;
pdata->surfaces[1].base.data = framebuffer_data;
}
done:
adf_free_interface_data(&intf_data);
return ret;
}
static int adf_device_init(adf_pdata *pdata, adf_device *dev)
{
adf_id_t intf_id;
int intf_fd;
int err;
err = adf_find_simple_post_configuration(dev, &pdata->format, 1, &intf_id,
&pdata->eng_id);
if (err < 0)
return err;
err = adf_device_attach(dev, pdata->eng_id, intf_id);
if (err < 0 && err != -EALREADY)
return err;
pdata->intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
if (pdata->intf_fd < 0)
return pdata->intf_fd;
err = adf_interface_init(pdata);
if (err < 0) {
close(pdata->intf_fd);
pdata->intf_fd = -1;
}
return err;
}
static GRSurface* adf_init(minui_backend *backend)
{
adf_pdata *pdata = (adf_pdata *)backend;
adf_id_t *dev_ids = NULL;
ssize_t n_dev_ids, i;
GRSurface* ret;
#if defined(RECOVERY_ABGR)
pdata->format = DRM_FORMAT_ABGR8888;
printf("setting DRM_FORMAT_ABGR8888 and GGL_PIXEL_FORMAT_BGRA_8888, GGL_PIXEL_FORMAT may not match!\n");
#elif defined(RECOVERY_BGRA)
pdata->format = DRM_FORMAT_BGRA8888;
printf("setting DRM_FORMAT_BGRA8888 and GGL_PIXEL_FORMAT_BGRA_8888\n");
#elif defined(RECOVERY_RGBA)
pdata->format = DRM_FORMAT_RGBA8888;
printf("setting DRM_FORMAT_RGBA8888 and GGL_PIXEL_FORMAT_RGBA_8888\n");
#elif defined(RECOVERY_RGBX)
pdata->format = DRM_FORMAT_RGBX8888;
printf("setting DRM_FORMAT_RGBX8888 and GGL_PIXEL_FORMAT_RGBX_8888\n");
#else
pdata->format = DRM_FORMAT_RGB565;
printf("setting DRM_FORMAT_RGB565 and GGL_PIXEL_FORMAT_RGB_565\n");
#endif
n_dev_ids = adf_devices(&dev_ids);
if (n_dev_ids == 0) {
return NULL;
} else if (n_dev_ids < 0) {
fprintf(stderr, "enumerating adf devices failed: %s\n",
strerror(-n_dev_ids));
return NULL;
}
pdata->intf_fd = -1;
for (i = 0; i < n_dev_ids && pdata->intf_fd < 0; i++) {
adf_device dev;
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 = adf_device_init(pdata, &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 (pdata->intf_fd < 0)
return NULL;
ret = adf_flip(backend);
adf_blank(backend, true);
adf_blank(backend, false);
return ret;
}
static GRSurface* adf_flip(minui_backend *backend)
{
adf_pdata *pdata = (adf_pdata *)backend;
adf_surface_pdata *surf = &pdata->surfaces[pdata->current_surface];
memcpy(surf->adf_data, surf->base.data, surf->pitch * surf->base.height);
int fence_fd = adf_interface_simple_post(pdata->intf_fd, pdata->eng_id,
surf->base.width, surf->base.height, pdata->format, surf->fd,
surf->offset, surf->pitch, -1);
if (fence_fd >= 0)
close(fence_fd);
pdata->current_surface = (pdata->current_surface + 1) % pdata->n_surfaces;
return &pdata->surfaces[pdata->current_surface].base;
}
static void adf_blank(minui_backend *backend, bool blank)
{
adf_pdata *pdata = (adf_pdata *)backend;
adf_interface_blank(pdata->intf_fd,
blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
}
static void adf_surface_destroy(adf_surface_pdata *surf)
{
munmap(surf->adf_data, surf->pitch * surf->base.height);
close(surf->fd);
}
static void adf_exit(minui_backend *backend)
{
adf_pdata *pdata = (adf_pdata *)backend;
unsigned int i;
free(pdata->surfaces[0].base.data);
for (i = 0; i < pdata->n_surfaces; i++)
adf_surface_destroy(&pdata->surfaces[i]);
if (pdata->intf_fd >= 0)
close(pdata->intf_fd);
free(pdata);
}
minui_backend *open_adf()
{
adf_pdata* pdata = reinterpret_cast<adf_pdata*>(calloc(1, sizeof(*pdata)));
if (!pdata) {
perror("allocating adf backend failed");
return NULL;
}
pdata->base.init = adf_init;
pdata->base.flip = adf_flip;
pdata->base.blank = adf_blank;
pdata->base.exit = adf_exit;
return &pdata->base;
}
