96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Linux driver for TerraTec DMX 6Fire USB
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*
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* Author: Torsten Schenk <torsten.schenk@zoho.com>
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* Created: Jan 01, 2011
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* Copyright: (C) Torsten Schenk
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*
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* Thanks to:
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* - Holger Ruckdeschel: he found out how to control individual analog
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* channel volumes and introduced mute switches
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef USB6FIRE_RATES_H
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#define USB6FIRE_RATES_H
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#include <sound/pcm.h>
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#include "common.h"
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/* Rate IDs used throughout driver */
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enum {
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RATE_44KHZ,
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RATE_48KHZ,
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RATE_88KHZ,
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RATE_96KHZ,
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RATE_176KHZ,
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RATE_192KHZ,
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N_RATES
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};
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/* Digital Thru enabled and no pcm streaming? If so, set this rate */
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enum {
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RATE_DIGITAL_THRU_ONLY = RATE_96KHZ
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};
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/* Supported rates in Hz */
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static const unsigned int rates[] =
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{ 44100, 48000, 88200, 96000, 176400, 192000, 0 };
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/* Rates that allow digital audio */
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static const bool rates_spdif_possible[] =
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{ true, true, true, true, false, false, false };
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static const bool rates_analog_possible[] =
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{ true, true, true, true, true, true, false };
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static const bool rates_valid[] =
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{ true, true, true, true, true, true, false };
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/* Isopacket size for outgoing urbs */
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static const unsigned int rates_out_packet_size[] =
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{ 228, 228, 420, 420, 604, 604 };
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/* Isopacket size for incoming urbs */
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static const unsigned int rates_in_packet_size[] =
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{ 228, 228, 420, 420, 404, 404 };
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/* Inferred from rates_x_packet_size: maximum number of frames per isopacket */
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static const unsigned int rates_max_fpp[] =
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{ 7, 7, 13, 13, 25, 25 };
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/* Altsetting for the rates */
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static const int rates_altsetting[] =
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{ 1, 1, 2, 2, 3, 3 };
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/* 6fire rate id low byte */
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static const u8 rates_6fire_vl[] =
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{ 0x00, 0x01, 0x00, 0x01, 0x00, 0x01 };
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/* 6fire rate id high byte */
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static const u8 rates_6fire_vh[] =
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{ 0x11, 0x11, 0x10, 0x10, 0x00, 0x00 };
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/* 6fire CS42426 functional mode */
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static const u8 rates_fmode[] =
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{ 0x00, 0x00, 0x50, 0x50, 0xa0, 0xa0 };
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/* 6fire CS42426 clock control */
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static const u8 rates_clock[] =
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{ 0x02, 0x02, 0x02, 0x02, 0x22, 0x22 };
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/* Alsa rate bit IDs */
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static const unsigned int rates_alsa_id[] = {
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SNDRV_PCM_RATE_44100,
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SNDRV_PCM_RATE_48000,
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SNDRV_PCM_RATE_88200,
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SNDRV_PCM_RATE_96000,
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SNDRV_PCM_RATE_176400,
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SNDRV_PCM_RATE_192000
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};
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static inline unsigned int rate_to_id(unsigned int rate)
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{
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unsigned int rate_id;
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for (rate_id = 0; rate_id < N_RATES; rate_id++)
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if (rates[rate_id] == rate)
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break;
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return rate_id;
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}
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#endif /* USB6FIRE_RATES_H */
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