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44b7308871
Digi 002/003 family uses asynchronous transaction for messaging. The address to transmit this message is stored on a certain register. This commit allocates a range of address on OHCI 1394 host controller to handle the messaging. As long as I know, the purpose of this message seems to notify lost of synchronization. While, the meaning of content of the message is not clear. Actual examples of this messaging: * When clock source is set as internal: - 0x00007051 - 0x00007052 - 0x00007054 - 0x00007057 - 0x00007058 * When clock source is set as somewhat external: - 0x00009000 - 0x00009010 - 0x00009020 - 0x00009021 - 0x00009022 The lost often occurs when using internal clock source. In this case, users hear sounds with quite short gap every several minutes. In fact, the lost is recovered temporarily. When using with external clock source, the lost seems not to occur. The mechanism is not clear yet. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
/*
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* digi00x.h - a part of driver for Digidesign Digi 002/003 family
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*
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* Copyright (c) 2014-2015 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#ifndef SOUND_DIGI00X_H_INCLUDED
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#define SOUND_DIGI00X_H_INCLUDED
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#include <linux/compat.h>
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/info.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/firewire.h>
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#include <sound/hwdep.h>
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#include "../lib.h"
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#include "../iso-resources.h"
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#include "../amdtp-stream.h"
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struct snd_dg00x {
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struct snd_card *card;
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struct fw_unit *unit;
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struct mutex mutex;
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spinlock_t lock;
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struct amdtp_stream tx_stream;
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struct fw_iso_resources tx_resources;
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struct amdtp_stream rx_stream;
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struct fw_iso_resources rx_resources;
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unsigned int substreams_counter;
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/* for uapi */
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int dev_lock_count;
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bool dev_lock_changed;
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wait_queue_head_t hwdep_wait;
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/* For asynchronous messages. */
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struct fw_address_handler async_handler;
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u32 msg;
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};
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#define DG00X_ADDR_BASE 0xffffe0000000ull
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#define DG00X_OFFSET_STREAMING_STATE 0x0000
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#define DG00X_OFFSET_STREAMING_SET 0x0004
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#define DG00X_OFFSET_MIDI_CTL_ADDR 0x0008
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/* For LSB of the address 0x000c */
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/* unknown 0x0010 */
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#define DG00X_OFFSET_MESSAGE_ADDR 0x0014
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/* For LSB of the address 0x0018 */
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/* unknown 0x001c */
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/* unknown 0x0020 */
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/* not used 0x0024--0x00ff */
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#define DG00X_OFFSET_ISOC_CHANNELS 0x0100
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/* unknown 0x0104 */
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/* unknown 0x0108 */
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/* unknown 0x010c */
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#define DG00X_OFFSET_LOCAL_RATE 0x0110
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#define DG00X_OFFSET_EXTERNAL_RATE 0x0114
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#define DG00X_OFFSET_CLOCK_SOURCE 0x0118
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#define DG00X_OFFSET_OPT_IFACE_MODE 0x011c
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/* unknown 0x0120 */
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/* Mixer control on/off 0x0124 */
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/* unknown 0x0128 */
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#define DG00X_OFFSET_DETECT_EXTERNAL 0x012c
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/* unknown 0x0138 */
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#define DG00X_OFFSET_MMC 0x0400
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enum snd_dg00x_rate {
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SND_DG00X_RATE_44100 = 0,
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SND_DG00X_RATE_48000,
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SND_DG00X_RATE_88200,
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SND_DG00X_RATE_96000,
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SND_DG00X_RATE_COUNT,
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};
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enum snd_dg00x_clock {
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SND_DG00X_CLOCK_INTERNAL = 0,
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SND_DG00X_CLOCK_SPDIF,
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SND_DG00X_CLOCK_ADAT,
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SND_DG00X_CLOCK_WORD,
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SND_DG00X_CLOCK_COUNT,
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};
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enum snd_dg00x_optical_mode {
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SND_DG00X_OPT_IFACE_MODE_ADAT = 0,
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SND_DG00X_OPT_IFACE_MODE_SPDIF,
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SND_DG00X_OPT_IFACE_MODE_COUNT,
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};
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int amdtp_dot_init(struct amdtp_stream *s, struct fw_unit *unit,
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enum amdtp_stream_direction dir);
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int amdtp_dot_set_parameters(struct amdtp_stream *s, unsigned int rate,
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unsigned int pcm_channels,
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unsigned int midi_ports);
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void amdtp_dot_reset(struct amdtp_stream *s);
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int amdtp_dot_add_pcm_hw_constraints(struct amdtp_stream *s,
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struct snd_pcm_runtime *runtime);
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void amdtp_dot_set_pcm_format(struct amdtp_stream *s, snd_pcm_format_t format);
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int snd_dg00x_transaction_register(struct snd_dg00x *dg00x);
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int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x);
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void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x);
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extern const unsigned int snd_dg00x_stream_rates[SND_DG00X_RATE_COUNT];
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extern const unsigned int snd_dg00x_stream_pcm_channels[SND_DG00X_RATE_COUNT];
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int snd_dg00x_stream_get_external_rate(struct snd_dg00x *dg00x,
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unsigned int *rate);
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int snd_dg00x_stream_get_local_rate(struct snd_dg00x *dg00x,
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unsigned int *rate);
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int snd_dg00x_stream_set_local_rate(struct snd_dg00x *dg00x, unsigned int rate);
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int snd_dg00x_stream_get_clock(struct snd_dg00x *dg00x,
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enum snd_dg00x_clock *clock);
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int snd_dg00x_stream_check_external_clock(struct snd_dg00x *dg00x,
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bool *detect);
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int snd_dg00x_stream_init_duplex(struct snd_dg00x *dg00x);
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int snd_dg00x_stream_start_duplex(struct snd_dg00x *dg00x, unsigned int rate);
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void snd_dg00x_stream_stop_duplex(struct snd_dg00x *dg00x);
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void snd_dg00x_stream_update_duplex(struct snd_dg00x *dg00x);
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void snd_dg00x_stream_destroy_duplex(struct snd_dg00x *dg00x);
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void snd_dg00x_stream_lock_changed(struct snd_dg00x *dg00x);
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int snd_dg00x_stream_lock_try(struct snd_dg00x *dg00x);
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void snd_dg00x_stream_lock_release(struct snd_dg00x *dg00x);
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void snd_dg00x_proc_init(struct snd_dg00x *dg00x);
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int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x);
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int snd_dg00x_create_hwdep_device(struct snd_dg00x *dg00x);
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#endif
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