rockchip.c

   1 /*
   2  * Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  */
   6
   7 #ifdef DRV_ROCKCHIP
   8
   9 #include <assert.h>
  10 #include <errno.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sys/mman.h>
  14 #include <xf86drm.h>
  15 #include <rockchip_drm.h>
  16
  17 #include "drv_priv.h"
  18 #include "helpers.h"
  19 #include "util.h"
  20
  21 static int drv_rockchip_bo_create(struct bo *bo,
  22                                   uint32_t width, uint32_t height,
  23                                   uint32_t format, uint32_t flags)
  24 {
  25         size_t plane;
  26
  27         switch (format) {
  28                 case DRV_FORMAT_NV12:
  29                         width = ALIGN(width, 4);
  30                         height = ALIGN(height, 4);
  31                         bo->strides[0] = bo->strides[1] = width;
  32                         bo->sizes[0] = height * bo->strides[0];
  33                         bo->sizes[1] = height * bo->strides[1] / 2;
  34                         bo->offsets[0] = 0;
  35                         bo->offsets[1] = height * bo->strides[0];
  36                         break;
  37                 case DRV_FORMAT_XRGB8888:
  38                 case DRV_FORMAT_ARGB8888:
  39                 case DRV_FORMAT_ABGR8888:
  40                         bo->strides[0] = drv_stride_from_format(format, width);
  41                         bo->sizes[0] = height * bo->strides[0];
  42                         bo->offsets[0] = 0;
  43                         break;
  44                 default:
  45                         fprintf(stderr, "drv: rockchip: unsupported format %4.4s\n",
  46                                 (char*)&format);
  47                         assert(0);
  48                         return -EINVAL;
  49         }
  50
  51         int ret;
  52         size_t size = 0;
  53
  54         for (plane = 0; plane < bo->num_planes; plane++)
  55                 size += bo->sizes[plane];
  56
  57         struct drm_rockchip_gem_create gem_create;
  58
  59         memset(&gem_create, 0, sizeof(gem_create));
  60         gem_create.size = size;
  61
  62         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
  63                            &gem_create);
  64
  65         if (ret) {
  66                 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
  67                                 "(size=%zu)\n", size);
  68         }
  69         else {
  70                 for (plane = 0; plane < bo->num_planes; plane++)
  71                         bo->handles[plane].u32 = gem_create.handle;
  72         }
  73
  74         return ret;
  75 }
  76
  77 static void *drv_rockchip_bo_map(struct bo *bo)
  78 {
  79         int ret;
  80         struct drm_rockchip_gem_map_off gem_map;
  81
  82         memset(&gem_map, 0, sizeof(gem_map));
  83         gem_map.handle = bo->handles[0].u32;
  84
  85         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
  86                        &gem_map);
  87         if (ret) {
  88                 fprintf(stderr,
  89                         "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
  90                 return MAP_FAILED;
  91         }
  92
  93         return mmap(0, bo->sizes[0], PROT_READ | PROT_WRITE, MAP_SHARED,
  94                     bo->drv->fd, gem_map.offset);
  95 }
  96
  97 const struct backend backend_rockchip =
  98 {
  99         .name = "rockchip",
 100         .bo_create = drv_rockchip_bo_create,
 101         .bo_destroy = drv_gem_bo_destroy,
 102         .bo_map = drv_rockchip_bo_map,
 103         .format_list = {
 104                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 105                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR},
 106                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 107                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR},
 108                 {DRV_FORMAT_ABGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 109                 {DRV_FORMAT_NV12, DRV_BO_USE_SCANOUT | DRV_BO_USE_RENDERING},
 110                 {DRV_FORMAT_NV12, DRV_BO_USE_SCANOUT | DRV_BO_USE_LINEAR},
 111         }
 112 };
 113
 114 #endif