root/sound/soc/qcom/qdsp6/q6dsp-common.c

DEFINITIONS

1. q6dsp_map_channels

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
   3 // Copyright (c) 2018, Linaro Limited
   4 
   5 #include "q6dsp-common.h"
   6 #include <linux/kernel.h>
   7 #include <linux/module.h>
   8 #include <linux/string.h>
   9 #include <linux/errno.h>
  10 
  11 int q6dsp_map_channels(u8 ch_map[PCM_MAX_NUM_CHANNEL], int ch)
  12 {
  13         memset(ch_map, 0, PCM_MAX_NUM_CHANNEL);
  14 
  15         switch (ch) {
  16         case 1:
  17                 ch_map[0] = PCM_CHANNEL_FC;
  18                 break;
  19         case 2:
  20                 ch_map[0] = PCM_CHANNEL_FL;
  21                 ch_map[1] = PCM_CHANNEL_FR;
  22                 break;
  23         case 3:
  24                 ch_map[0] = PCM_CHANNEL_FL;
  25                 ch_map[1] = PCM_CHANNEL_FR;
  26                 ch_map[2] = PCM_CHANNEL_FC;
  27                 break;
  28         case 4:
  29                 ch_map[0] = PCM_CHANNEL_FL;
  30                 ch_map[1] = PCM_CHANNEL_FR;
  31                 ch_map[2] = PCM_CHANNEL_LS;
  32                 ch_map[3] = PCM_CHANNEL_RS;
  33                 break;
  34         case 5:
  35                 ch_map[0] = PCM_CHANNEL_FL;
  36                 ch_map[1] = PCM_CHANNEL_FR;
  37                 ch_map[2] = PCM_CHANNEL_FC;
  38                 ch_map[3] = PCM_CHANNEL_LS;
  39                 ch_map[4] = PCM_CHANNEL_RS;
  40                 break;
  41         case 6:
  42                 ch_map[0] = PCM_CHANNEL_FL;
  43                 ch_map[1] = PCM_CHANNEL_FR;
  44                 ch_map[2] = PCM_CHANNEL_LFE;
  45                 ch_map[3] = PCM_CHANNEL_FC;
  46                 ch_map[4] = PCM_CHANNEL_LS;
  47                 ch_map[5] = PCM_CHANNEL_RS;
  48                 break;
  49         case 8:
  50                 ch_map[0] = PCM_CHANNEL_FL;
  51                 ch_map[1] = PCM_CHANNEL_FR;
  52                 ch_map[2] = PCM_CHANNEL_LFE;
  53                 ch_map[3] = PCM_CHANNEL_FC;
  54                 ch_map[4] = PCM_CHANNEL_LS;
  55                 ch_map[5] = PCM_CHANNEL_RS;
  56                 ch_map[6] = PCM_CHANNEL_LB;
  57                 ch_map[7] = PCM_CHANNEL_RB;
  58                 break;
  59         default:
  60                 return -EINVAL;
  61         }
  62 
  63         return 0;
  64 }
  65 EXPORT_SYMBOL_GPL(q6dsp_map_channels);
  66 MODULE_LICENSE("GPL v2");