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| author | Adrian Knoth <adi@drcomp.erfurt.thur.de> | 2015-02-10 11:33:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-06 14:43:24 -0800 |
| commit | 837a7c32ea1667ca5645c7f449dfcb8fcf70e0bc (patch) | |
| tree | 11625b3f8b2c6651d5f6059e29b0cc8e288bd37a /sound | |
| parent | 1b5c9e4de72388b79942f31b58a4afb031fc7c10 (diff) | |
| download | lwn-837a7c32ea1667ca5645c7f449dfcb8fcf70e0bc.tar.gz lwn-837a7c32ea1667ca5645c7f449dfcb8fcf70e0bc.zip | |
ALSA: hdspm - Constrain periods to 2 on older cards
commit f0153c3d948c1764f6c920a0675d86fc1d75813e upstream.
RME RayDAT and AIO use a fixed buffer size of 16384 samples. With period
sizes of 32-4096, this translates to 4-512 periods.
The older RME cards have a variable buffer size but require exactly two
periods.
This patch enforces nperiods=2 on those cards.
Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/rme9652/hdspm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index e98dc008de0b..21167503a3f9 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -6102,6 +6102,9 @@ static int snd_hdspm_playback_open(struct snd_pcm_substream *substream) snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } @@ -6176,6 +6179,9 @@ static int snd_hdspm_capture_open(struct snd_pcm_substream *substream) snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 64, 8192); + snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_PERIODS, + 2, 2); break; } |