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_ARGB8888, DRM_FORMAT_BGR888,
  17                                                   DRM_FORMAT_XRGB8888 };
  18
  19 static const uint32_t supported_formats[] = { DRM_FORMAT_NV12 };
  20
  21 static int msm_init(struct driver *drv)
  22 {
  23         drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
  24                              &LINEAR_METADATA, BO_USE_RENDER_MASK);
  25
  26         drv_add_combinations(drv, supported_formats, ARRAY_SIZE(supported_formats),
  27                              &LINEAR_METADATA, BO_USE_TEXTURE_MASK | BO_USE_HW_VIDEO_DECODER);
  28
  29         return drv_modify_linear_combinations(drv);
  30 }
  31
  32 static int msm_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
  33                          uint64_t flags)
  34 {
  35         width = ALIGN(width, MESA_LLVMPIPE_TILE_SIZE);
  36         height = ALIGN(height, MESA_LLVMPIPE_TILE_SIZE);
  37
  38         /* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned. */
  39         if (bo->format == DRM_FORMAT_YVU420_ANDROID)
  40                 height = bo->height;
  41
  42         /* Adjust the height of NV12 buffers to include room for the UV plane */
  43         /* The extra 12KB at the end are a requirement of the Venus codec driver */
  44         if (bo->format == DRM_FORMAT_NV12)
  45                 height += DIV_ROUND_UP(height, 2) + DIV_ROUND_UP(0x3000, width);
  46
  47         return drv_dumb_bo_create(bo, width, height, format, flags);
  48 }
  49
  50 const struct backend backend_msm = {
  51         .name = "msm",
  52         .init = msm_init,
  53         .bo_create = msm_bo_create,
  54         .bo_destroy = drv_dumb_bo_destroy,
  55         .bo_import = drv_prime_bo_import,
  56         .bo_map = drv_dumb_bo_map,
  57         .bo_unmap = drv_bo_munmap,
  58 };
  59
  60 #endif /* DRV_MSM */