msm.c

   1 /*
   2  * Copyright 2018 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_MSM
   8
   9 #include "drv_priv.h"
  10 #include "helpers.h"
  11 #include "util.h"
  12
  13 #define MESA_LLVMPIPE_TILE_ORDER 6
  14 #define MESA_LLVMPIPE_TILE_SIZE (1 << MESA_LLVMPIPE_TILE_ORDER)
  15
  16 static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
  17                                                   DRM_FORMAT_BGR888,   DRM_FORMAT_RGB565,
  18                                                   DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB8888 };
  19
  20 static const uint32_t supported_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_R8, DRM_FORMAT_YVU420,
  21                                               DRM_FORMAT_YVU420_ANDROID };
  22
  23 static int msm_init(struct driver *drv)
  24 {
  25         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
  26                              &LINEAR_METADATA, BO_USE_RENDER_MASK);
  27
  28         drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats),
  29                              &LINEAR_METADATA, BO_USE_TEXTURE_MASK | BO_USE_HW_VIDEO_DECODER);
  30
  31         return drv_modify_linear_combinations(drv);
  32 }
  33
  34 static int msm_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
  35                          uint64_t flags)
  36 {
  37         width = ALIGN(width, MESA_LLVMPIPE_TILE_SIZE);
  38         height = ALIGN(height, MESA_LLVMPIPE_TILE_SIZE);
  39
  40         /*
  41          * The extra 12KB at the end are a requirement of the Venus codec driver.
  42          * Since |height| will be multiplied by 3/2 in drv_dumb_bo_create,
  43          * we multiply this padding by 2/3 here.
  44          */
  45         if (bo->format == DRM_FORMAT_NV12)
  46                 height += 2 * DIV_ROUND_UP(0x3000, 3 * width);
  47
  48         return drv_dumb_bo_create(bo, width, height, format, flags);
  49 }
  50
  51 const struct backend backend_msm = {
  52         .name = "msm",
  53         .init = msm_init,
  54         .bo_create = msm_bo_create,
  55         .bo_destroy = drv_dumb_bo_destroy,
  56         .bo_import = drv_prime_bo_import,
  57         .bo_map = drv_dumb_bo_map,
  58         .bo_unmap = drv_bo_munmap,
  59 };
  60
  61 #endif /* DRV_MSM */