mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
ALSA: dice: add a helper function to restart all of available streams
This commit is a small refactoring for better readability. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
ec592fd32e
commit
20b9454479
1 changed files with 62 additions and 57 deletions
|
@ -284,6 +284,63 @@ static int start_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
|
|||
return err;
|
||||
}
|
||||
|
||||
static int start_duplex_streams(struct snd_dice *dice, unsigned int rate)
|
||||
{
|
||||
struct reg_params tx_params, rx_params;
|
||||
int i;
|
||||
int err;
|
||||
|
||||
err = get_register_params(dice, &tx_params, &rx_params);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Stop transmission. */
|
||||
stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
|
||||
stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
|
||||
snd_dice_transaction_clear_enable(dice);
|
||||
release_resources(dice);
|
||||
|
||||
err = ensure_phase_lock(dice);
|
||||
if (err < 0) {
|
||||
dev_err(&dice->unit->device, "fail to ensure phase lock\n");
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Start both streams. */
|
||||
err = start_streams(dice, AMDTP_IN_STREAM, rate, &tx_params);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
err = start_streams(dice, AMDTP_OUT_STREAM, rate, &rx_params);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
err = snd_dice_transaction_set_enable(dice);
|
||||
if (err < 0) {
|
||||
dev_err(&dice->unit->device, "fail to enable interface\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
for (i = 0; i < MAX_STREAMS; i++) {
|
||||
if ((i < tx_params.count &&
|
||||
!amdtp_stream_wait_callback(&dice->tx_stream[i],
|
||||
CALLBACK_TIMEOUT)) ||
|
||||
(i < rx_params.count &&
|
||||
!amdtp_stream_wait_callback(&dice->rx_stream[i],
|
||||
CALLBACK_TIMEOUT))) {
|
||||
err = -ETIMEDOUT;
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
error:
|
||||
stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
|
||||
stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
|
||||
snd_dice_transaction_clear_enable(dice);
|
||||
release_resources(dice);
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* MEMO: After this function, there're two states of streams:
|
||||
* - None streams are running.
|
||||
|
@ -293,8 +350,6 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
|
|||
{
|
||||
unsigned int curr_rate;
|
||||
unsigned int i;
|
||||
struct reg_params tx_params, rx_params;
|
||||
bool need_to_start = false;
|
||||
enum snd_dice_rate_mode mode;
|
||||
int err;
|
||||
|
||||
|
@ -321,7 +376,7 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
|
|||
break;
|
||||
}
|
||||
if (i < MAX_STREAMS)
|
||||
need_to_start = true;
|
||||
goto restart;
|
||||
|
||||
/* Check required streams are running or not. */
|
||||
err = snd_dice_stream_get_rate_mode(dice, rate, &mode);
|
||||
|
@ -336,61 +391,11 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
|
|||
break;
|
||||
}
|
||||
if (i < MAX_STREAMS)
|
||||
need_to_start = true;
|
||||
goto restart;
|
||||
|
||||
if (need_to_start) {
|
||||
err = get_register_params(dice, &tx_params, &rx_params);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
/* Stop transmission. */
|
||||
snd_dice_transaction_clear_enable(dice);
|
||||
stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
|
||||
stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
|
||||
release_resources(dice);
|
||||
|
||||
err = ensure_phase_lock(dice);
|
||||
if (err < 0) {
|
||||
dev_err(&dice->unit->device,
|
||||
"fail to ensure phase lock\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* Start both streams. */
|
||||
err = start_streams(dice, AMDTP_IN_STREAM, rate, &tx_params);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
err = start_streams(dice, AMDTP_OUT_STREAM, rate, &rx_params);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
err = snd_dice_transaction_set_enable(dice);
|
||||
if (err < 0) {
|
||||
dev_err(&dice->unit->device,
|
||||
"fail to enable interface\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
for (i = 0; i < MAX_STREAMS; i++) {
|
||||
if ((i < tx_params.count &&
|
||||
!amdtp_stream_wait_callback(&dice->tx_stream[i],
|
||||
CALLBACK_TIMEOUT)) ||
|
||||
(i < rx_params.count &&
|
||||
!amdtp_stream_wait_callback(&dice->rx_stream[i],
|
||||
CALLBACK_TIMEOUT))) {
|
||||
err = -ETIMEDOUT;
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return err;
|
||||
error:
|
||||
snd_dice_transaction_clear_enable(dice);
|
||||
stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
|
||||
stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
|
||||
release_resources(dice);
|
||||
return err;
|
||||
return 0;
|
||||
restart:
|
||||
return start_duplex_streams(dice, rate);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
Loading…
Reference in a new issue