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Diffstat (limited to 'sound/firewire/motu/motu-pcm.c')
-rw-r--r--sound/firewire/motu/motu-pcm.c36
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,
};