diff options
Diffstat (limited to 'sound/firewire')
| -rw-r--r-- | sound/firewire/amdtp-am824.c | 42 | ||||
| -rw-r--r-- | sound/firewire/amdtp-am824.h | 5 | ||||
| -rw-r--r-- | sound/firewire/amdtp-stream.c | 21 | ||||
| -rw-r--r-- | sound/firewire/amdtp-stream.h | 3 | ||||
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 12 | ||||
| -rw-r--r-- | sound/firewire/dice/dice-stream.c | 4 | ||||
| -rw-r--r-- | sound/firewire/fireworks/fireworks_stream.c | 4 | ||||
| -rw-r--r-- | sound/firewire/oxfw/oxfw-stream.c | 4 |
8 files changed, 62 insertions, 33 deletions
diff --git a/sound/firewire/amdtp-am824.c b/sound/firewire/amdtp-am824.c index da4b643eff40..f5edcbfa3157 100644 --- a/sound/firewire/amdtp-am824.c +++ b/sound/firewire/amdtp-am824.c @@ -10,6 +10,48 @@ #define CIP_FMT_AM 0x10 +/* "Clock-based rate control mode" is just supported. */ +#define AMDTP_FDF_AM824 0x00 + +/** + * amdtp_am824_set_parameters - set stream parameters + * @s: the AMDTP stream to configure + * @rate: the sample rate + * @pcm_channels: the number of PCM samples in each data block, to be encoded + * as AM824 multi-bit linear audio + * @midi_ports: the number of MIDI ports (i.e., MPX-MIDI Data Channels) + * @double_pcm_frames: one data block transfers two PCM frames + * + * The parameters must be set before the stream is started, and must not be + * changed while the stream is running. + */ +int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate, + unsigned int pcm_channels, + unsigned int midi_ports, + bool double_pcm_frames) +{ + int err; + + err = amdtp_stream_set_parameters(s, rate, pcm_channels, midi_ports); + if (err < 0) + return err; + + s->fdf = AMDTP_FDF_AM824 | s->sfc; + + /* + * In IEC 61883-6, one data block represents one event. In ALSA, one + * event equals to one PCM frame. But Dice has a quirk at higher + * sampling rate to transfer two PCM frames in one data block. + */ + if (double_pcm_frames) + s->frame_multiplier = 2; + else + s->frame_multiplier = 1; + + return 0; +} +EXPORT_SYMBOL_GPL(amdtp_am824_set_parameters); + /** * amdtp_am824_init - initialize an AMDTP stream structure to handle AM824 * data block diff --git a/sound/firewire/amdtp-am824.h b/sound/firewire/amdtp-am824.h index ed96ac56628f..cfc0d61e0db4 100644 --- a/sound/firewire/amdtp-am824.h +++ b/sound/firewire/amdtp-am824.h @@ -3,6 +3,11 @@ #include "amdtp-stream.h" +int amdtp_am824_set_parameters(struct amdtp_stream *s, unsigned int rate, + unsigned int pcm_channels, + unsigned int midi_ports, + bool double_pcm_frames); + int amdtp_am824_init(struct amdtp_stream *s, struct fw_unit *unit, enum amdtp_stream_direction dir, enum cip_flags flags); #endif diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c index 2254eec4521b..53d84e9bf241 100644 --- a/sound/firewire/amdtp-stream.c +++ b/sound/firewire/amdtp-stream.c @@ -54,12 +54,8 @@ #define CIP_SYT_MASK 0x0000ffff #define CIP_SYT_NO_INFO 0xffff -/* - * Audio and Music transfer protocol specific parameters - * only "Clock-based rate control mode" is supported - */ +/* Audio and Music transfer protocol specific parameters */ #define CIP_FMT_AM 0x10 -#define AMDTP_FDF_AM824 0x00 #define AMDTP_FDF_NO_DATA 0xff /* TODO: make these configurable */ @@ -204,8 +200,7 @@ EXPORT_SYMBOL(amdtp_stream_add_pcm_hw_constraints); int amdtp_stream_set_parameters(struct amdtp_stream *s, unsigned int rate, unsigned int pcm_channels, - unsigned int midi_ports, - bool double_pcm_frames) + unsigned int midi_ports) { unsigned int i, sfc, midi_channels; @@ -228,18 +223,6 @@ int amdtp_stream_set_parameters(struct amdtp_stream *s, s->data_block_quadlets = s->pcm_channels + midi_channels; s->midi_ports = midi_ports; - s->fdf = AMDTP_FDF_AM824 | s->sfc; - - /* - * In IEC 61883-6, one data block represents one event. In ALSA, one - * event equals to one PCM frame. But Dice has a quirk at higher - * sampling rate to transfer two PCM frames in one data block. - */ - if (double_pcm_frames) - s->frame_multiplier = 2; - else - s->frame_multiplier = 1; - s->syt_interval = amdtp_syt_intervals[sfc]; /* default buffering in the device */ diff --git a/sound/firewire/amdtp-stream.h b/sound/firewire/amdtp-stream.h index 5f96affe37b7..d915940a14c9 100644 --- a/sound/firewire/amdtp-stream.h +++ b/sound/firewire/amdtp-stream.h @@ -181,8 +181,7 @@ void amdtp_stream_destroy(struct amdtp_stream *s); int amdtp_stream_set_parameters(struct amdtp_stream *s, unsigned int rate, unsigned int pcm_channels, - unsigned int midi_ports, - bool double_pcm_frames); + unsigned int midi_ports); unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s); int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed); diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index 34bc3a419993..fa510f30cf8f 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -427,17 +427,17 @@ make_both_connections(struct snd_bebob *bebob, unsigned int rate) index = get_formation_index(rate); pcm_channels = bebob->tx_stream_formations[index].pcm; midi_channels = bebob->tx_stream_formations[index].midi; - err = amdtp_stream_set_parameters(&bebob->tx_stream, rate, - pcm_channels, midi_channels * 8, - false); + err = amdtp_am824_set_parameters(&bebob->tx_stream, rate, + pcm_channels, midi_channels * 8, + false); if (err < 0) goto end; pcm_channels = bebob->rx_stream_formations[index].pcm; midi_channels = bebob->rx_stream_formations[index].midi; - err = amdtp_stream_set_parameters(&bebob->rx_stream, rate, - pcm_channels, midi_channels * 8, - false); + err = amdtp_am824_set_parameters(&bebob->rx_stream, rate, + pcm_channels, midi_channels * 8, + false); if (err < 0) goto end; diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index 917860e88b66..89483818785e 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -132,8 +132,8 @@ static int start_stream(struct snd_dice *dice, struct amdtp_stream *stream, pcm_chs *= 2; } - err = amdtp_stream_set_parameters(stream, rate, pcm_chs, midi_ports, - false); + err = amdtp_am824_set_parameters(stream, rate, pcm_chs, midi_ports, + double_pcm_frames); if (err < 0) goto end; diff --git a/sound/firewire/fireworks/fireworks_stream.c b/sound/firewire/fireworks/fireworks_stream.c index 8cac5b987cc1..759f6e3ed44a 100644 --- a/sound/firewire/fireworks/fireworks_stream.c +++ b/sound/firewire/fireworks/fireworks_stream.c @@ -73,8 +73,8 @@ start_stream(struct snd_efw *efw, struct amdtp_stream *stream, midi_ports = efw->midi_in_ports; } - err = amdtp_stream_set_parameters(stream, sampling_rate, - pcm_channels, midi_ports, false); + err = amdtp_am824_set_parameters(stream, sampling_rate, + pcm_channels, midi_ports, false); if (err < 0) goto end; diff --git a/sound/firewire/oxfw/oxfw-stream.c b/sound/firewire/oxfw/oxfw-stream.c index 83683414793f..4982befc9c25 100644 --- a/sound/firewire/oxfw/oxfw-stream.c +++ b/sound/firewire/oxfw/oxfw-stream.c @@ -155,8 +155,8 @@ static int start_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream, err = -EINVAL; goto end; } - err = amdtp_stream_set_parameters(stream, rate, - pcm_channels, midi_ports, false); + err = amdtp_am824_set_parameters(stream, rate, pcm_channels, midi_ports, + false); if (err < 0) goto end; |