210 lines
6.1 KiB
C
210 lines
6.1 KiB
C
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/*
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* dice.h - a part of driver for Dice based devices
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*
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* Copyright (c) Clemens Ladisch
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* Copyright (c) 2014 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_DICE_H_INCLUDED
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#define SOUND_DICE_H_INCLUDED
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#include <linux/compat.h>
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#include <linux/completion.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/firewire.h>
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#include <linux/firewire-constants.h>
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#include <linux/jiffies.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <sound/control.h>
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#include <sound/core.h>
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#include <sound/firewire.h>
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#include <sound/hwdep.h>
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#include <sound/info.h>
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#include <sound/initval.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/rawmidi.h>
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#include "../amdtp-am824.h"
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#include "../iso-resources.h"
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#include "../lib.h"
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#include "dice-interface.h"
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/*
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* This module support maximum 2 pairs of tx/rx isochronous streams for
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* our convinience.
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*
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* In documents for ASICs called with a name of 'DICE':
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* - ASIC for DICE II:
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* - Maximum 2 tx and 4 rx are supported.
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* - A packet supports maximum 16 data channels.
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* - TCD2210/2210-E (so-called 'Dice Mini'):
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* - Maximum 2 tx and 2 rx are supported.
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* - A packet supports maximum 16 data channels.
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* - TCD2220/2220-E (so-called 'Dice Jr.')
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* - 2 tx and 2 rx are supported.
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* - A packet supports maximum 16 data channels.
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* - TCD3070-CH (so-called 'Dice III')
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* - Maximum 2 tx and 2 rx are supported.
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* - A packet supports maximum 32 data channels.
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*
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* For the above, MIDI conformant data channel is just on the first isochronous
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* stream.
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*/
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#define MAX_STREAMS 2
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struct snd_dice {
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struct snd_card *card;
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struct fw_unit *unit;
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spinlock_t lock;
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struct mutex mutex;
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bool registered;
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struct delayed_work dwork;
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/* Offsets for sub-addresses */
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unsigned int global_offset;
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unsigned int rx_offset;
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unsigned int tx_offset;
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unsigned int sync_offset;
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unsigned int rsrv_offset;
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unsigned int clock_caps;
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struct fw_address_handler notification_handler;
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int owner_generation;
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u32 notification_bits;
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/* For uapi */
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int dev_lock_count; /* > 0 driver, < 0 userspace */
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bool dev_lock_changed;
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wait_queue_head_t hwdep_wait;
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/* For streaming */
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struct fw_iso_resources tx_resources[MAX_STREAMS];
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struct fw_iso_resources rx_resources[MAX_STREAMS];
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struct amdtp_stream tx_stream[MAX_STREAMS];
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struct amdtp_stream rx_stream[MAX_STREAMS];
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bool global_enabled;
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struct completion clock_accepted;
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unsigned int substreams_counter;
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bool force_two_pcms;
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};
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enum snd_dice_addr_type {
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SND_DICE_ADDR_TYPE_PRIVATE,
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SND_DICE_ADDR_TYPE_GLOBAL,
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SND_DICE_ADDR_TYPE_TX,
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SND_DICE_ADDR_TYPE_RX,
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SND_DICE_ADDR_TYPE_SYNC,
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SND_DICE_ADDR_TYPE_RSRV,
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};
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int snd_dice_transaction_write(struct snd_dice *dice,
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enum snd_dice_addr_type type,
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unsigned int offset,
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void *buf, unsigned int len);
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int snd_dice_transaction_read(struct snd_dice *dice,
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enum snd_dice_addr_type type, unsigned int offset,
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void *buf, unsigned int len);
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static inline int snd_dice_transaction_write_global(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_write(dice,
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SND_DICE_ADDR_TYPE_GLOBAL, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_read_global(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_read(dice,
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SND_DICE_ADDR_TYPE_GLOBAL, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_write_tx(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_TX, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_read_tx(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_TX, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_write_rx(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_RX, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_read_rx(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_RX, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_write_sync(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_write(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
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buf, len);
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}
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static inline int snd_dice_transaction_read_sync(struct snd_dice *dice,
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unsigned int offset,
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void *buf, unsigned int len)
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{
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return snd_dice_transaction_read(dice, SND_DICE_ADDR_TYPE_SYNC, offset,
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buf, len);
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}
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int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
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unsigned int *source);
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int snd_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate);
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int snd_dice_transaction_set_enable(struct snd_dice *dice);
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void snd_dice_transaction_clear_enable(struct snd_dice *dice);
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int snd_dice_transaction_init(struct snd_dice *dice);
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int snd_dice_transaction_reinit(struct snd_dice *dice);
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void snd_dice_transaction_destroy(struct snd_dice *dice);
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#define SND_DICE_RATES_COUNT 7
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extern const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT];
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int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate);
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void snd_dice_stream_stop_duplex(struct snd_dice *dice);
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int snd_dice_stream_init_duplex(struct snd_dice *dice);
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void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
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void snd_dice_stream_update_duplex(struct snd_dice *dice);
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int snd_dice_stream_lock_try(struct snd_dice *dice);
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void snd_dice_stream_lock_release(struct snd_dice *dice);
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int snd_dice_create_pcm(struct snd_dice *dice);
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int snd_dice_create_hwdep(struct snd_dice *dice);
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void snd_dice_create_proc(struct snd_dice *dice);
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int snd_dice_create_midi(struct snd_dice *dice);
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#endif
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