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| author | Adrian Knoth <adi@drcomp.erfurt.thur.de> | 2015-02-10 11:33:50 +0100 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-03-01 23:34:16 +0100 |
| commit | a80c93292402eaa3c19bbbff9afca82c8df54e13 (patch) | |
| tree | 1d98e9ef46be16af1b23307f2f3a57b7696cdf7c /sound | |
| parent | 60a5053935e8ec6f707b876406b0c5f94998bbd0 (diff) | |
| download | lwn-a80c93292402eaa3c19bbbff9afca82c8df54e13.tar.gz lwn-a80c93292402eaa3c19bbbff9afca82c8df54e13.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: Jiri Slaby <jslaby@suse.cz>
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 3cde55b753e2..9585e316a5c6 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -6107,6 +6107,9 @@ 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; } @@ -6181,6 +6184,9 @@ 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; } |