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-rw-r--r--sound/firewire/dice/dice-stream.c110
1 files changed, 54 insertions, 56 deletions
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c
index 2077f182726a..845d5e5884a4 100644
--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -12,6 +12,11 @@
#define CALLBACK_TIMEOUT 200
#define NOTIFICATION_TIMEOUT_MS (2 * MSEC_PER_SEC)
+struct reg_params {
+ unsigned int count;
+ unsigned int size;
+};
+
const unsigned int snd_dice_rates[SND_DICE_RATES_COUNT] = {
/* mode 0 */
[0] = 32000,
@@ -65,7 +70,9 @@ static int ensure_phase_lock(struct snd_dice *dice)
return 0;
}
-static int get_register_params(struct snd_dice *dice, unsigned int params[4])
+static int get_register_params(struct snd_dice *dice,
+ struct reg_params *tx_params,
+ struct reg_params *rx_params)
{
__be32 reg[2];
int err;
@@ -73,14 +80,16 @@ static int get_register_params(struct snd_dice *dice, unsigned int params[4])
err = snd_dice_transaction_read_tx(dice, TX_NUMBER, reg, sizeof(reg));
if (err < 0)
return err;
- params[0] = min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
- params[1] = be32_to_cpu(reg[1]) * 4;
+ tx_params->count =
+ min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
+ tx_params->size = be32_to_cpu(reg[1]) * 4;
err = snd_dice_transaction_read_rx(dice, RX_NUMBER, reg, sizeof(reg));
if (err < 0)
return err;
- params[2] = min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
- params[3] = be32_to_cpu(reg[1]) * 4;
+ rx_params->count =
+ min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
+ rx_params->size = be32_to_cpu(reg[1]) * 4;
return 0;
}
@@ -105,21 +114,21 @@ static void release_resources(struct snd_dice *dice)
}
static void stop_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
- unsigned int count, unsigned int size)
+ struct reg_params *params)
{
__be32 reg;
unsigned int i;
- for (i = 0; i < count; i++) {
+ for (i = 0; i < params->count; i++) {
reg = cpu_to_be32((u32)-1);
if (dir == AMDTP_IN_STREAM) {
snd_dice_transaction_write_tx(dice,
- size * i + TX_ISOCHRONOUS,
- &reg, sizeof(reg));
+ params->size * i + TX_ISOCHRONOUS,
+ &reg, sizeof(reg));
} else {
snd_dice_transaction_write_rx(dice,
- size * i + RX_ISOCHRONOUS,
- &reg, sizeof(reg));
+ params->size * i + RX_ISOCHRONOUS,
+ &reg, sizeof(reg));
}
}
}
@@ -180,8 +189,7 @@ static int keep_resources(struct snd_dice *dice,
}
static int start_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
- unsigned int rate, unsigned int count,
- unsigned int size)
+ unsigned int rate, struct reg_params *params)
{
__be32 reg[2];
unsigned int i, pcm_chs, midi_ports;
@@ -197,15 +205,15 @@ static int start_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
resources = dice->rx_resources;
}
- for (i = 0; i < count; i++) {
+ for (i = 0; i < params->count; i++) {
if (dir == AMDTP_IN_STREAM) {
err = snd_dice_transaction_read_tx(dice,
- size * i + TX_NUMBER_AUDIO,
- reg, sizeof(reg));
+ params->size * i + TX_NUMBER_AUDIO,
+ reg, sizeof(reg));
} else {
err = snd_dice_transaction_read_rx(dice,
- size * i + RX_NUMBER_AUDIO,
- reg, sizeof(reg));
+ params->size * i + RX_NUMBER_AUDIO,
+ reg, sizeof(reg));
}
if (err < 0)
return err;
@@ -219,12 +227,12 @@ static int start_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
reg[0] = cpu_to_be32(resources[i].channel);
if (dir == AMDTP_IN_STREAM) {
err = snd_dice_transaction_write_tx(dice,
- size * i + TX_ISOCHRONOUS,
- reg, sizeof(reg[0]));
+ params->size * i + TX_ISOCHRONOUS,
+ reg, sizeof(reg[0]));
} else {
err = snd_dice_transaction_write_rx(dice,
- size * i + RX_ISOCHRONOUS,
- reg, sizeof(reg[0]));
+ params->size * i + RX_ISOCHRONOUS,
+ reg, sizeof(reg[0]));
}
if (err < 0)
return err;
@@ -247,14 +255,14 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
{
unsigned int curr_rate;
unsigned int i;
- unsigned int reg_params[4];
+ struct reg_params tx_params, rx_params;
bool need_to_start;
int err;
if (dice->substreams_counter == 0)
return -EIO;
- err = get_register_params(dice, reg_params);
+ err = get_register_params(dice, &tx_params, &rx_params);
if (err < 0)
return err;
@@ -271,12 +279,12 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
/* Judge to need to restart streams. */
for (i = 0; i < MAX_STREAMS; i++) {
- if (i < reg_params[0]) {
+ if (i < tx_params.count) {
if (amdtp_streaming_error(&dice->tx_stream[i]) ||
!amdtp_stream_running(&dice->tx_stream[i]))
break;
}
- if (i < reg_params[2]) {
+ if (i < rx_params.count) {
if (amdtp_streaming_error(&dice->rx_stream[i]) ||
!amdtp_stream_running(&dice->rx_stream[i]))
break;
@@ -287,10 +295,8 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
if (need_to_start) {
/* Stop transmission. */
snd_dice_transaction_clear_enable(dice);
- stop_streams(dice, AMDTP_IN_STREAM, reg_params[0],
- reg_params[1]);
- stop_streams(dice, AMDTP_OUT_STREAM, reg_params[2],
- reg_params[3]);
+ stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
+ stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
release_resources(dice);
err = ensure_phase_lock(dice);
@@ -301,12 +307,10 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
}
/* Start both streams. */
- err = start_streams(dice, AMDTP_IN_STREAM, rate, reg_params[0],
- reg_params[1]);
+ err = start_streams(dice, AMDTP_IN_STREAM, rate, &tx_params);
if (err < 0)
goto error;
- err = start_streams(dice, AMDTP_OUT_STREAM, rate, reg_params[2],
- reg_params[3]);
+ err = start_streams(dice, AMDTP_OUT_STREAM, rate, &rx_params);
if (err < 0)
goto error;
@@ -318,10 +322,10 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
}
for (i = 0; i < MAX_STREAMS; i++) {
- if ((i < reg_params[0] &&
+ if ((i < tx_params.count &&
!amdtp_stream_wait_callback(&dice->tx_stream[i],
CALLBACK_TIMEOUT)) ||
- (i < reg_params[2] &&
+ (i < rx_params.count &&
!amdtp_stream_wait_callback(&dice->rx_stream[i],
CALLBACK_TIMEOUT))) {
err = -ETIMEDOUT;
@@ -333,8 +337,8 @@ int snd_dice_stream_start_duplex(struct snd_dice *dice, unsigned int rate)
return err;
error:
snd_dice_transaction_clear_enable(dice);
- stop_streams(dice, AMDTP_IN_STREAM, reg_params[0], reg_params[1]);
- stop_streams(dice, AMDTP_OUT_STREAM, reg_params[2], reg_params[3]);
+ stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
+ stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
release_resources(dice);
return err;
}
@@ -346,18 +350,16 @@ error:
*/
void snd_dice_stream_stop_duplex(struct snd_dice *dice)
{
- unsigned int reg_params[4];
+ struct reg_params tx_params, rx_params;
if (dice->substreams_counter > 0)
return;
snd_dice_transaction_clear_enable(dice);
- if (get_register_params(dice, reg_params) == 0) {
- stop_streams(dice, AMDTP_IN_STREAM, reg_params[0],
- reg_params[1]);
- stop_streams(dice, AMDTP_OUT_STREAM, reg_params[2],
- reg_params[3]);
+ if (get_register_params(dice, &tx_params, &rx_params) == 0) {
+ stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
+ stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
}
release_resources(dice);
@@ -444,15 +446,13 @@ end:
void snd_dice_stream_destroy_duplex(struct snd_dice *dice)
{
- unsigned int reg_params[4];
+ struct reg_params tx_params, rx_params;
snd_dice_transaction_clear_enable(dice);
- if (get_register_params(dice, reg_params) == 0) {
- stop_streams(dice, AMDTP_IN_STREAM, reg_params[0],
- reg_params[1]);
- stop_streams(dice, AMDTP_OUT_STREAM, reg_params[2],
- reg_params[3]);
+ if (get_register_params(dice, &tx_params, &rx_params) == 0) {
+ stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
+ stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
}
release_resources(dice);
@@ -462,7 +462,7 @@ void snd_dice_stream_destroy_duplex(struct snd_dice *dice)
void snd_dice_stream_update_duplex(struct snd_dice *dice)
{
- unsigned int reg_params[4];
+ struct reg_params tx_params, rx_params;
/*
* On a bus reset, the DICE firmware disables streaming and then goes
@@ -474,11 +474,9 @@ void snd_dice_stream_update_duplex(struct snd_dice *dice)
*/
dice->global_enabled = false;
- if (get_register_params(dice, reg_params) == 0) {
- stop_streams(dice, AMDTP_IN_STREAM, reg_params[0],
- reg_params[1]);
- stop_streams(dice, AMDTP_OUT_STREAM, reg_params[2],
- reg_params[3]);
+ if (get_register_params(dice, &tx_params, &rx_params) == 0) {
+ stop_streams(dice, AMDTP_IN_STREAM, &tx_params);
+ stop_streams(dice, AMDTP_OUT_STREAM, &rx_params);
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.