/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/cdefs.h>
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#include <sys/mman.h>
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#include <adf/adf.h>
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#include "graphics.h"
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struct adf_surface_pdata {
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GRSurface base;
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int fd;
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__u32 offset;
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__u32 pitch;
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};
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struct adf_pdata {
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minui_backend base;
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int intf_fd;
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adf_id_t eng_id;
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__u32 format;
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unsigned int current_surface;
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unsigned int n_surfaces;
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struct adf_surface_pdata surfaces[2];
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};
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static gr_surface adf_flip(struct minui_backend *backend);
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static void adf_blank(struct minui_backend *backend, bool blank);
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static int adf_surface_init(struct adf_pdata *pdata,
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struct drm_mode_modeinfo *mode, struct adf_surface_pdata *surf)
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{
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memset(surf, 0, sizeof(*surf));
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surf->fd = adf_interface_simple_buffer_alloc(pdata->intf_fd, mode->hdisplay,
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mode->vdisplay, pdata->format, &surf->offset, &surf->pitch);
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if (surf->fd < 0)
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return surf->fd;
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surf->base.width = mode->hdisplay;
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surf->base.height = mode->vdisplay;
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surf->base.row_bytes = surf->pitch;
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surf->base.pixel_bytes = (pdata->format == DRM_FORMAT_RGB565) ? 2 : 4;
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surf->base.data = mmap(NULL, surf->pitch * surf->base.height, PROT_WRITE,
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MAP_SHARED, surf->fd, surf->offset);
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if (surf->base.data == MAP_FAILED) {
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close(surf->fd);
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return -errno;
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}
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return 0;
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}
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static int adf_interface_init(struct adf_pdata *pdata)
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{
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struct adf_interface_data intf_data;
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int ret = 0;
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int err;
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err = adf_get_interface_data(pdata->intf_fd, &intf_data);
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if (err < 0)
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return err;
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err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[0]);
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if (err < 0) {
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fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
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ret = err;
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goto done;
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}
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err = adf_surface_init(pdata, &intf_data.current_mode,
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&pdata->surfaces[1]);
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if (err < 0) {
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fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
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memset(&pdata->surfaces[1], 0, sizeof(pdata->surfaces[1]));
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pdata->n_surfaces = 1;
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} else {
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pdata->n_surfaces = 2;
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}
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done:
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adf_free_interface_data(&intf_data);
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return ret;
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}
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static int adf_device_init(struct adf_pdata *pdata, struct adf_device *dev)
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{
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adf_id_t intf_id;
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int intf_fd;
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int err;
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err = adf_find_simple_post_configuration(dev, &pdata->format, 1, &intf_id,
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&pdata->eng_id);
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if (err < 0)
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return err;
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err = adf_device_attach(dev, pdata->eng_id, intf_id);
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if (err < 0 && err != -EALREADY)
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return err;
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pdata->intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
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if (pdata->intf_fd < 0)
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return pdata->intf_fd;
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err = adf_interface_init(pdata);
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if (err < 0) {
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close(pdata->intf_fd);
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pdata->intf_fd = -1;
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}
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return err;
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}
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static gr_surface adf_init(minui_backend *backend)
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{
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struct adf_pdata *pdata = (struct adf_pdata *)backend;
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adf_id_t *dev_ids = NULL;
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ssize_t n_dev_ids, i;
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gr_surface ret;
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#if defined(RECOVERY_BGRA)
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pdata->format = DRM_FORMAT_BGRA8888;
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#elif defined(RECOVERY_RGBX)
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pdata->format = DRM_FORMAT_RGBX8888;
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#else
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pdata->format = DRM_FORMAT_RGB565;
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#endif
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n_dev_ids = adf_devices(&dev_ids);
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if (n_dev_ids == 0) {
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return NULL;
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} else if (n_dev_ids < 0) {
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fprintf(stderr, "enumerating adf devices failed: %s\n",
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strerror(-n_dev_ids));
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return NULL;
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}
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pdata->intf_fd = -1;
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for (i = 0; i < n_dev_ids && pdata->intf_fd < 0; i++) {
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struct adf_device dev;
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int err = adf_device_open(dev_ids[i], O_RDWR, &dev);
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if (err < 0) {
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fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i],
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strerror(-err));
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continue;
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}
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err = adf_device_init(pdata, &dev);
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if (err < 0)
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fprintf(stderr, "initializing adf device %u failed: %s\n",
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dev_ids[i], strerror(-err));
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adf_device_close(&dev);
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}
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free(dev_ids);
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if (pdata->intf_fd < 0)
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return NULL;
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ret = adf_flip(backend);
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adf_blank(backend, true);
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adf_blank(backend, false);
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return ret;
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}
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static gr_surface adf_flip(struct minui_backend *backend)
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{
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struct adf_pdata *pdata = (struct adf_pdata *)backend;
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struct adf_surface_pdata *surf = &pdata->surfaces[pdata->current_surface];
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int fence_fd = adf_interface_simple_post(pdata->intf_fd, pdata->eng_id,
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surf->base.width, surf->base.height, pdata->format, surf->fd,
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surf->offset, surf->pitch, -1);
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if (fence_fd >= 0)
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close(fence_fd);
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pdata->current_surface = (pdata->current_surface + 1) % pdata->n_surfaces;
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return &pdata->surfaces[pdata->current_surface].base;
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}
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static void adf_blank(struct minui_backend *backend, bool blank)
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{
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struct adf_pdata *pdata = (struct adf_pdata *)backend;
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adf_interface_blank(pdata->intf_fd,
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blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
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}
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static void adf_surface_destroy(struct adf_surface_pdata *surf)
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{
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munmap(surf->base.data, surf->pitch * surf->base.height);
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close(surf->fd);
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}
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static void adf_exit(struct minui_backend *backend)
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{
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struct adf_pdata *pdata = (struct adf_pdata *)backend;
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unsigned int i;
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for (i = 0; i < pdata->n_surfaces; i++)
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adf_surface_destroy(&pdata->surfaces[i]);
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if (pdata->intf_fd >= 0)
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close(pdata->intf_fd);
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free(pdata);
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}
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minui_backend *open_adf()
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{
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struct adf_pdata *pdata = calloc(1, sizeof(*pdata));
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if (!pdata) {
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perror("allocating adf backend failed");
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return NULL;
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}
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pdata->base.init = adf_init;
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pdata->base.flip = adf_flip;
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pdata->base.blank = adf_blank;
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pdata->base.exit = adf_exit;
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return &pdata->base;
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}
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