nvkm/core/enum.c

0001 /*
0002  * Copyright (C) 2010 Nouveau Project
0003  *
0004  * All Rights Reserved.
0005  *
0006  * Permission is hereby granted, free of charge, to any person obtaining
0007  * a copy of this software and associated documentation files (the
0008  * "Software"), to deal in the Software without restriction, including
0009  * without limitation the rights to use, copy, modify, merge, publish,
0010  * distribute, sublicense, and/or sell copies of the Software, and to
0011  * permit persons to whom the Software is furnished to do so, subject to
0012  * the following conditions:
0013  *
0014  * The above copyright notice and this permission notice (including the
0015  * next paragraph) shall be included in all copies or substantial
0016  * portions of the Software.
0017  *
0018  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0019  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0020  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
0021  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
0022  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
0023  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
0024  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0025  *
0026  */
0027 #include <core/enum.h>
0028
0029 const struct nvkm_enum *
0030 nvkm_enum_find(const struct nvkm_enum *en, u32 value)
0031 {
0032     while (en->name) {
0033         if (en->value == value)
0034             return en;
0035         en++;
0036     }
0037
0038     return NULL;
0039 }
0040
0041 void
0042 nvkm_snprintbf(char *data, int size, const struct nvkm_bitfield *bf, u32 value)
0043 {
0044     bool space = false;
0045     while (size >= 1 && bf->name) {
0046         if (value & bf->mask) {
0047             int this = snprintf(data, size, "%s%s",
0048                         space ? " " : "", bf->name);
0049             size -= this;
0050             data += this;
0051             space = true;
0052         }
0053         bf++;
0054     }
0055     data[0] = '\0';
0056 }