root/sound/firewire/bebob/bebob_terratec.c

DEFINITIONS

1. phase88_rack_clk_src_get

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * bebob_terratec.c - a part of driver for BeBoB based devices
   4  *
   5  * Copyright (c) 2013-2014 Takashi Sakamoto
   6  */
   7 
   8 #include "./bebob.h"
   9 
  10 static const enum snd_bebob_clock_type phase88_rack_clk_src_types[] = {
  11         SND_BEBOB_CLOCK_TYPE_INTERNAL,
  12         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* S/PDIF */
  13         SND_BEBOB_CLOCK_TYPE_EXTERNAL,  /* Word Clock */
  14 };
  15 static int
  16 phase88_rack_clk_src_get(struct snd_bebob *bebob, unsigned int *id)
  17 {
  18         unsigned int enable_ext, enable_word;
  19         int err;
  20 
  21         err = avc_audio_get_selector(bebob->unit, 0, 9, &enable_ext);
  22         if (err < 0)
  23                 goto end;
  24         err = avc_audio_get_selector(bebob->unit, 0, 8, &enable_word);
  25         if (err < 0)
  26                 goto end;
  27 
  28         if (enable_ext == 0)
  29                 *id = 0;
  30         else if (enable_word == 0)
  31                 *id = 1;
  32         else
  33                 *id = 2;
  34 end:
  35         return err;
  36 }
  37 
  38 static const struct snd_bebob_rate_spec phase_series_rate_spec = {
  39         .get    = &snd_bebob_stream_get_rate,
  40         .set    = &snd_bebob_stream_set_rate,
  41 };
  42 
  43 /* PHASE 88 Rack FW */
  44 static const struct snd_bebob_clock_spec phase88_rack_clk = {
  45         .num    = ARRAY_SIZE(phase88_rack_clk_src_types),
  46         .types  = phase88_rack_clk_src_types,
  47         .get    = &phase88_rack_clk_src_get,
  48 };
  49 const struct snd_bebob_spec phase88_rack_spec = {
  50         .clock  = &phase88_rack_clk,
  51         .rate   = &phase_series_rate_spec,
  52         .meter  = NULL
  53 };