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 rockchip_bo_create(struct bo *bo, uint32_t width, uint32_t height,
  22                               uint32_t format, uint32_t flags)
  23 {
  24         size_t plane;
  25
  26         switch (format) {
  27                 case DRV_FORMAT_NV12:
  28                         width = ALIGN(width, 4);
  29                         height = ALIGN(height, 4);
  30                         bo->strides[0] = bo->strides[1] = width;
  31                         bo->sizes[0] = height * bo->strides[0];
  32                         bo->sizes[1] = height * bo->strides[1] / 2;
  33                         bo->offsets[0] = 0;
  34                         bo->offsets[1] = height * bo->strides[0];
  35                         break;
  36                 case DRV_FORMAT_XRGB8888:
  37                 case DRV_FORMAT_ARGB8888:
  38                 case DRV_FORMAT_ABGR8888:
  39                         bo->strides[0] = drv_stride_from_format(format, width);
  40                         bo->sizes[0] = height * bo->strides[0];
  41                         bo->offsets[0] = 0;
  42                         break;
  43                 default:
  44                         fprintf(stderr, "drv: rockchip: unsupported format %4.4s\n",
  45                                 (char*)&format);
  46                         assert(0);
  47                         return -EINVAL;
  48         }
  49
  50         int ret;
  51         size_t size = 0;
  52
  53         for (plane = 0; plane < bo->num_planes; plane++)
  54                 size += bo->sizes[plane];
  55
  56         struct drm_rockchip_gem_create gem_create;
  57
  58         memset(&gem_create, 0, sizeof(gem_create));
  59         gem_create.size = size;
  60
  61         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_CREATE,
  62                            &gem_create);
  63
  64         if (ret) {
  65                 fprintf(stderr, "drv: DRM_IOCTL_ROCKCHIP_GEM_CREATE failed "
  66                                 "(size=%zu)\n", size);
  67         }
  68         else {
  69                 for (plane = 0; plane < bo->num_planes; plane++)
  70                         bo->handles[plane].u32 = gem_create.handle;
  71         }
  72
  73         return ret;
  74 }
  75
  76 static void *rockchip_bo_map(struct bo *bo)
  77 {
  78         int ret;
  79         struct drm_rockchip_gem_map_off gem_map;
  80
  81         memset(&gem_map, 0, sizeof(gem_map));
  82         gem_map.handle = bo->handles[0].u32;
  83
  84         ret = drmIoctl(bo->drv->fd, DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET,
  85                        &gem_map);
  86         if (ret) {
  87                 fprintf(stderr,
  88                         "drv: DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET failed\n");
  89                 return MAP_FAILED;
  90         }
  91
  92         return mmap(0, bo->sizes[0], PROT_READ | PROT_WRITE, MAP_SHARED,
  93                     bo->drv->fd, gem_map.offset);
  94 }
  95
  96 const struct backend backend_rockchip =
  97 {
  98         .name = "rockchip",
  99         .bo_create = rockchip_bo_create,
 100         .bo_destroy = drv_gem_bo_destroy,
 101         .bo_map = rockchip_bo_map,
 102         .format_list = {
 103                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 104                 {DRV_FORMAT_XRGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR},
 105                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 106                 {DRV_FORMAT_ARGB8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_LINEAR},
 107                 {DRV_FORMAT_ABGR8888, DRV_BO_USE_SCANOUT | DRV_BO_USE_CURSOR | DRV_BO_USE_RENDERING},
 108                 {DRV_FORMAT_NV12, DRV_BO_USE_SCANOUT | DRV_BO_USE_RENDERING},
 109                 {DRV_FORMAT_NV12, DRV_BO_USE_SCANOUT | DRV_BO_USE_LINEAR},
 110         }
 111 };
 112
 113 #endif