drivers/gpu/drm/nouveau/nvkm/core/enum.c

   1 /*
   2  * Copyright (C) 2010 Nouveau Project
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sublicense, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27 #include <core/enum.h>
  28
  29 const struct nvkm_enum *
  30 nvkm_enum_find(const struct nvkm_enum *en, u32 value)
  31 {
  32         while (en->name) {
  33                 if (en->value == value)
  34                         return en;
  35                 en++;
  36         }
  37
  38         return NULL;
  39 }
  40
  41 void
  42 nvkm_snprintbf(char *data, int size, const struct nvkm_bitfield *bf, u32 value)
  43 {
  44         bool space = false;
  45         while (size >= 1 && bf->name) {
  46                 if (value & bf->mask) {
  47                         int this = snprintf(data, size, "%s%s",
  48                                             space ? " " : "", bf->name);
  49                         size -= this;
  50                         data += this;
  51                         space = true;
  52                 }
  53                 bf++;
  54         }
  55         data[0] = '\0';
  56 }