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