[alsa-devel] [PATCH 2/4] ALSA: hdspm - Set period_bytes_min to 32 * 4 for new RME cards

[Adrian Knoth]

On newer RME cards like RayDAT and AIO, the lower bound is 32 samples
per period in contrast to 64 samples as seen on older cards.

We hence lower period_bytes_min to 32 * 4. Four bytes per sample.

Signed-off-by: Adrian Knoth <adi at drcomp.erfurt.thur.de>

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 204e1ce..8dc2a89 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -5703,7 +5703,7 @@ static struct snd_pcm_hardware snd_hdspm_playback_subinfo = {
 	.channels_max = HDSPM_MAX_CHANNELS,
 	.buffer_bytes_max =
 	    HDSPM_CHANNEL_BUFFER_BYTES * HDSPM_MAX_CHANNELS,
-	.period_bytes_min = (64 * 4),
+	.period_bytes_min = (32 * 4),
 	.period_bytes_max = (4096 * 4) * HDSPM_MAX_CHANNELS,
 	.periods_min = 2,
 	.periods_max = 512,
@@ -5728,7 +5728,7 @@ static struct snd_pcm_hardware snd_hdspm_capture_subinfo = {
 	.channels_max = HDSPM_MAX_CHANNELS,
 	.buffer_bytes_max =
 	    HDSPM_CHANNEL_BUFFER_BYTES * HDSPM_MAX_CHANNELS,
-	.period_bytes_min = (64 * 4),
+	.period_bytes_min = (32 * 4),
 	.period_bytes_max = (4096 * 4) * HDSPM_MAX_CHANNELS,
 	.periods_min = 2,
 	.periods_max = 512,
-- 
1.7.5.4