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authorClemens Ladisch <clemens@ladisch.de>2005-09-05 10:31:05 +0200
committerJaroslav Kysela <perex@suse.cz>2005-09-12 10:41:10 +0200
commit49045d3d4dc7c43310b1fca693e29fcdbe68faba (patch)
tree88350108174f69eaca455c79df3a718c3f3b7333
parent025cd2f6b1624f536d4df564add3d13ea5022f53 (diff)
[ALSA] usb-audio: add SNDRV_PCM_INFO_BATCH flag
USB generic driver Add the SNDRV_PCM_INFO_BATCH flag to the PCM hardware information to indicate that the driver uses double buffering. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
-rw-r--r--sound/usb/usbaudio.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index bfbec587665..da22f25d4ef 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1439,9 +1439,11 @@ static int snd_usb_pcm_prepare(snd_pcm_substream_t *substream)
static snd_pcm_hardware_t snd_usb_playback =
{
- .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_MMAP_VALID),
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BATCH |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER,
.buffer_bytes_max = (256*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),
@@ -1451,9 +1453,11 @@ static snd_pcm_hardware_t snd_usb_playback =
static snd_pcm_hardware_t snd_usb_capture =
{
- .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_MMAP_VALID),
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BATCH |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER,
.buffer_bytes_max = (256*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),