diff options
Diffstat (limited to 'sound/firewire/motu/motu-pcm.c')
| -rw-r--r-- | sound/firewire/motu/motu-pcm.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c index 94558f3d218b..a2b50df70874 100644 --- a/sound/firewire/motu/motu-pcm.c +++ b/sound/firewire/motu/motu-pcm.c @@ -96,18 +96,6 @@ static void limit_channels_and_rates(struct snd_motu *motu, snd_pcm_limit_hw_rates(runtime); } -static void limit_period_and_buffer(struct snd_pcm_hardware *hw) -{ - hw->periods_min = 2; /* SNDRV_PCM_INFO_BATCH */ - hw->periods_max = UINT_MAX; - - hw->period_bytes_min = 4 * hw->channels_max; /* byte for a frame */ - - /* Just to prevent from allocating much pages. */ - hw->period_bytes_max = hw->period_bytes_min * 2048; - hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min; -} - static int init_hw_info(struct snd_motu *motu, struct snd_pcm_substream *substream) { @@ -117,13 +105,6 @@ static int init_hw_info(struct snd_motu *motu, struct snd_motu_packet_format *formats; int err; - hw->info = SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_BATCH | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_JOINT_DUPLEX | - SNDRV_PCM_INFO_BLOCK_TRANSFER; - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { hw->formats = SNDRV_PCM_FMTBIT_S32; stream = &motu->tx_stream; @@ -135,7 +116,6 @@ static int init_hw_info(struct snd_motu *motu, } limit_channels_and_rates(motu, runtime, formats); - limit_period_and_buffer(hw); err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, motu_rate_constraint, formats, @@ -356,6 +336,20 @@ static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream) return amdtp_stream_pcm_pointer(&motu->rx_stream); } +static int capture_ack(struct snd_pcm_substream *substream) +{ + struct snd_motu *motu = substream->private_data; + + return amdtp_stream_pcm_ack(&motu->tx_stream); +} + +static int playback_ack(struct snd_pcm_substream *substream) +{ + struct snd_motu *motu = substream->private_data; + + return amdtp_stream_pcm_ack(&motu->rx_stream); +} + int snd_motu_create_pcm_devices(struct snd_motu *motu) { static struct snd_pcm_ops capture_ops = { @@ -367,6 +361,7 @@ int snd_motu_create_pcm_devices(struct snd_motu *motu) .prepare = capture_prepare, .trigger = capture_trigger, .pointer = capture_pointer, + .ack = capture_ack, .page = snd_pcm_lib_get_vmalloc_page, .mmap = snd_pcm_lib_mmap_vmalloc, }; @@ -379,6 +374,7 @@ int snd_motu_create_pcm_devices(struct snd_motu *motu) .prepare = playback_prepare, .trigger = playback_trigger, .pointer = playback_pointer, + .ack = playback_ack, .page = snd_pcm_lib_get_vmalloc_page, .mmap = snd_pcm_lib_mmap_vmalloc, }; |