drivers/gpu/drm/amd/display/dc/basics/conversion.h

   1 /*
   2  * Copyright 2012-15 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: AMD
  23  *
  24  */
  25
  26 #ifndef __DAL_CONVERSION_H__
  27 #define __DAL_CONVERSION_H__
  28
  29 #include "include/fixed31_32.h"
  30
  31 uint16_t fixed_point_to_int_frac(
  32         struct fixed31_32 arg,
  33         uint8_t integer_bits,
  34         uint8_t fractional_bits);
  35
  36 void convert_float_matrix(
  37         uint16_t *matrix,
  38         struct fixed31_32 *flt,
  39         uint32_t buffer_size);
  40
  41 static inline unsigned int log_2(unsigned int num)
  42 {
  43         return ilog2(num);
  44 }
  45
  46 #endif