359 lines
8.0 KiB
C
359 lines
8.0 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* fireworks_stream.c - a part of driver for Fireworks based devices
|
||
|
|
*
|
||
|
|
* Copyright (c) 2013-2014 Takashi Sakamoto
|
||
|
|
*/
|
||
|
|
#include "./fireworks.h"
|
||
|
|
|
||
|
|
#define CALLBACK_TIMEOUT 100
|
||
|
|
|
||
|
|
static int init_stream(struct snd_efw *efw, struct amdtp_stream *stream)
|
||
|
|
{
|
||
|
|
struct cmp_connection *conn;
|
||
|
|
enum cmp_direction c_dir;
|
||
|
|
enum amdtp_stream_direction s_dir;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (stream == &efw->tx_stream) {
|
||
|
|
conn = &efw->out_conn;
|
||
|
|
c_dir = CMP_OUTPUT;
|
||
|
|
s_dir = AMDTP_IN_STREAM;
|
||
|
|
} else {
|
||
|
|
conn = &efw->in_conn;
|
||
|
|
c_dir = CMP_INPUT;
|
||
|
|
s_dir = AMDTP_OUT_STREAM;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = cmp_connection_init(conn, efw->unit, c_dir, 0);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = amdtp_am824_init(stream, efw->unit, s_dir, CIP_BLOCKING);
|
||
|
|
if (err < 0) {
|
||
|
|
amdtp_stream_destroy(stream);
|
||
|
|
cmp_connection_destroy(conn);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (stream == &efw->tx_stream) {
|
||
|
|
// Fireworks transmits NODATA packets with TAG0.
|
||
|
|
efw->tx_stream.flags |= CIP_EMPTY_WITH_TAG0;
|
||
|
|
// Fireworks has its own meaning for dbc.
|
||
|
|
efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
|
||
|
|
// Fireworks reset dbc at bus reset.
|
||
|
|
efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
|
||
|
|
// But Recent firmwares starts packets with non-zero dbc.
|
||
|
|
// Driver version 5.7.6 installs firmware version 5.7.3.
|
||
|
|
if (efw->is_fireworks3 &&
|
||
|
|
(efw->firmware_version == 0x5070000 ||
|
||
|
|
efw->firmware_version == 0x5070300 ||
|
||
|
|
efw->firmware_version == 0x5080000))
|
||
|
|
efw->tx_stream.flags |= CIP_UNALIGHED_DBC;
|
||
|
|
// AudioFire9 always reports wrong dbs.
|
||
|
|
if (efw->is_af9)
|
||
|
|
efw->tx_stream.flags |= CIP_WRONG_DBS;
|
||
|
|
// Firmware version 5.5 reports fixed interval for dbc.
|
||
|
|
if (efw->firmware_version == 0x5050000)
|
||
|
|
efw->tx_stream.ctx_data.tx.dbc_interval = 8;
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int start_stream(struct snd_efw *efw, struct amdtp_stream *stream,
|
||
|
|
unsigned int rate)
|
||
|
|
{
|
||
|
|
struct cmp_connection *conn;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (stream == &efw->tx_stream)
|
||
|
|
conn = &efw->out_conn;
|
||
|
|
else
|
||
|
|
conn = &efw->in_conn;
|
||
|
|
|
||
|
|
// Establish connection via CMP.
|
||
|
|
err = cmp_connection_establish(conn);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
// Start amdtp stream.
|
||
|
|
err = amdtp_domain_add_stream(&efw->domain, stream,
|
||
|
|
conn->resources.channel, conn->speed);
|
||
|
|
if (err < 0) {
|
||
|
|
cmp_connection_break(conn);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// This function should be called before starting the stream or after stopping
|
||
|
|
// the streams.
|
||
|
|
static void destroy_stream(struct snd_efw *efw, struct amdtp_stream *stream)
|
||
|
|
{
|
||
|
|
amdtp_stream_destroy(stream);
|
||
|
|
|
||
|
|
if (stream == &efw->tx_stream)
|
||
|
|
cmp_connection_destroy(&efw->out_conn);
|
||
|
|
else
|
||
|
|
cmp_connection_destroy(&efw->in_conn);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
check_connection_used_by_others(struct snd_efw *efw, struct amdtp_stream *s)
|
||
|
|
{
|
||
|
|
struct cmp_connection *conn;
|
||
|
|
bool used;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (s == &efw->tx_stream)
|
||
|
|
conn = &efw->out_conn;
|
||
|
|
else
|
||
|
|
conn = &efw->in_conn;
|
||
|
|
|
||
|
|
err = cmp_connection_check_used(conn, &used);
|
||
|
|
if ((err >= 0) && used && !amdtp_stream_running(s)) {
|
||
|
|
dev_err(&efw->unit->device,
|
||
|
|
"Connection established by others: %cPCR[%d]\n",
|
||
|
|
(conn->direction == CMP_OUTPUT) ? 'o' : 'i',
|
||
|
|
conn->pcr_index);
|
||
|
|
err = -EBUSY;
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_stream_init_duplex(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = init_stream(efw, &efw->tx_stream);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = init_stream(efw, &efw->rx_stream);
|
||
|
|
if (err < 0) {
|
||
|
|
destroy_stream(efw, &efw->tx_stream);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = amdtp_domain_init(&efw->domain);
|
||
|
|
if (err < 0) {
|
||
|
|
destroy_stream(efw, &efw->tx_stream);
|
||
|
|
destroy_stream(efw, &efw->rx_stream);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set IEC61883 compliant mode (actually not fully compliant...).
|
||
|
|
err = snd_efw_command_set_tx_mode(efw, SND_EFW_TRANSPORT_MODE_IEC61883);
|
||
|
|
if (err < 0) {
|
||
|
|
destroy_stream(efw, &efw->tx_stream);
|
||
|
|
destroy_stream(efw, &efw->rx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int keep_resources(struct snd_efw *efw, struct amdtp_stream *stream,
|
||
|
|
unsigned int rate, unsigned int mode)
|
||
|
|
{
|
||
|
|
unsigned int pcm_channels;
|
||
|
|
unsigned int midi_ports;
|
||
|
|
struct cmp_connection *conn;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (stream == &efw->tx_stream) {
|
||
|
|
pcm_channels = efw->pcm_capture_channels[mode];
|
||
|
|
midi_ports = efw->midi_out_ports;
|
||
|
|
conn = &efw->out_conn;
|
||
|
|
} else {
|
||
|
|
pcm_channels = efw->pcm_playback_channels[mode];
|
||
|
|
midi_ports = efw->midi_in_ports;
|
||
|
|
conn = &efw->in_conn;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = amdtp_am824_set_parameters(stream, rate, pcm_channels,
|
||
|
|
midi_ports, false);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
return cmp_connection_reserve(conn, amdtp_stream_get_max_payload(stream));
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_stream_reserve_duplex(struct snd_efw *efw, unsigned int rate)
|
||
|
|
{
|
||
|
|
unsigned int curr_rate;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
// Considering JACK/FFADO streaming:
|
||
|
|
// TODO: This can be removed hwdep functionality becomes popular.
|
||
|
|
err = check_connection_used_by_others(efw, &efw->rx_stream);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
// stop streams if rate is different.
|
||
|
|
err = snd_efw_command_get_sampling_rate(efw, &curr_rate);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
if (rate == 0)
|
||
|
|
rate = curr_rate;
|
||
|
|
if (rate != curr_rate) {
|
||
|
|
amdtp_domain_stop(&efw->domain);
|
||
|
|
|
||
|
|
cmp_connection_break(&efw->out_conn);
|
||
|
|
cmp_connection_break(&efw->in_conn);
|
||
|
|
|
||
|
|
cmp_connection_release(&efw->out_conn);
|
||
|
|
cmp_connection_release(&efw->in_conn);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (efw->substreams_counter == 0 || rate != curr_rate) {
|
||
|
|
unsigned int mode;
|
||
|
|
|
||
|
|
err = snd_efw_command_set_sampling_rate(efw, rate);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = snd_efw_get_multiplier_mode(rate, &mode);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = keep_resources(efw, &efw->tx_stream, rate, mode);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = keep_resources(efw, &efw->rx_stream, rate, mode);
|
||
|
|
if (err < 0) {
|
||
|
|
cmp_connection_release(&efw->in_conn);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_stream_start_duplex(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
unsigned int rate;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
// Need no substreams.
|
||
|
|
if (efw->substreams_counter == 0)
|
||
|
|
return -EIO;
|
||
|
|
|
||
|
|
if (amdtp_streaming_error(&efw->rx_stream) ||
|
||
|
|
amdtp_streaming_error(&efw->tx_stream)) {
|
||
|
|
amdtp_domain_stop(&efw->domain);
|
||
|
|
cmp_connection_break(&efw->out_conn);
|
||
|
|
cmp_connection_break(&efw->in_conn);
|
||
|
|
}
|
||
|
|
|
||
|
|
err = snd_efw_command_get_sampling_rate(efw, &rate);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
if (!amdtp_stream_running(&efw->rx_stream)) {
|
||
|
|
err = start_stream(efw, &efw->rx_stream, rate);
|
||
|
|
if (err < 0)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
err = start_stream(efw, &efw->tx_stream, rate);
|
||
|
|
if (err < 0)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
err = amdtp_domain_start(&efw->domain);
|
||
|
|
if (err < 0)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
// Wait first callback.
|
||
|
|
if (!amdtp_stream_wait_callback(&efw->rx_stream,
|
||
|
|
CALLBACK_TIMEOUT) ||
|
||
|
|
!amdtp_stream_wait_callback(&efw->tx_stream,
|
||
|
|
CALLBACK_TIMEOUT)) {
|
||
|
|
err = -ETIMEDOUT;
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
error:
|
||
|
|
amdtp_domain_stop(&efw->domain);
|
||
|
|
|
||
|
|
cmp_connection_break(&efw->out_conn);
|
||
|
|
cmp_connection_break(&efw->in_conn);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void snd_efw_stream_stop_duplex(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
if (efw->substreams_counter == 0) {
|
||
|
|
amdtp_domain_stop(&efw->domain);
|
||
|
|
|
||
|
|
cmp_connection_break(&efw->out_conn);
|
||
|
|
cmp_connection_break(&efw->in_conn);
|
||
|
|
|
||
|
|
cmp_connection_release(&efw->out_conn);
|
||
|
|
cmp_connection_release(&efw->in_conn);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void snd_efw_stream_update_duplex(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
amdtp_domain_stop(&efw->domain);
|
||
|
|
|
||
|
|
cmp_connection_break(&efw->out_conn);
|
||
|
|
cmp_connection_break(&efw->in_conn);
|
||
|
|
|
||
|
|
amdtp_stream_pcm_abort(&efw->rx_stream);
|
||
|
|
amdtp_stream_pcm_abort(&efw->tx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
void snd_efw_stream_destroy_duplex(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
amdtp_domain_destroy(&efw->domain);
|
||
|
|
|
||
|
|
destroy_stream(efw, &efw->rx_stream);
|
||
|
|
destroy_stream(efw, &efw->tx_stream);
|
||
|
|
}
|
||
|
|
|
||
|
|
void snd_efw_stream_lock_changed(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
efw->dev_lock_changed = true;
|
||
|
|
wake_up(&efw->hwdep_wait);
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_efw_stream_lock_try(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
spin_lock_irq(&efw->lock);
|
||
|
|
|
||
|
|
/* user land lock this */
|
||
|
|
if (efw->dev_lock_count < 0) {
|
||
|
|
err = -EBUSY;
|
||
|
|
goto end;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* this is the first time */
|
||
|
|
if (efw->dev_lock_count++ == 0)
|
||
|
|
snd_efw_stream_lock_changed(efw);
|
||
|
|
err = 0;
|
||
|
|
end:
|
||
|
|
spin_unlock_irq(&efw->lock);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void snd_efw_stream_lock_release(struct snd_efw *efw)
|
||
|
|
{
|
||
|
|
spin_lock_irq(&efw->lock);
|
||
|
|
|
||
|
|
if (WARN_ON(efw->dev_lock_count <= 0))
|
||
|
|
goto end;
|
||
|
|
if (--efw->dev_lock_count == 0)
|
||
|
|
snd_efw_stream_lock_changed(efw);
|
||
|
|
end:
|
||
|
|
spin_unlock_irq(&efw->lock);
|
||
|
|
}
|