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| author | Raymond Yau <superquad.vortex2@gmail.com> | 2011-04-25 12:05:45 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-04-27 17:00:00 +0200 |
| commit | 54a96dadaa2bbe81006c66447517b57534d80e7f (patch) | |
| tree | a715ff6d1c192758bbb9472e92638e5718e49971 /sound/pci/au88x0/au88x0_pcm.c | |
| parent | 6a9a6f233baad76b67a448b39bb55fc064755ba4 (diff) | |
| download | op-kernel-dev-54a96dadaa2bbe81006c66447517b57534d80e7f.zip op-kernel-dev-54a96dadaa2bbe81006c66447517b57534d80e7f.tar.gz | |
ALSA - au88x0 - Add buffer bytes constraints
This allow application such as gstreamer and wine which use
snd_pcm_hw_params_set_buffer_time_near() won't fail any more
since sound chips require special containt power 2 period bytes
Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/au88x0/au88x0_pcm.c')
| -rw-r--r-- | sound/pci/au88x0/au88x0_pcm.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sound/pci/au88x0/au88x0_pcm.c b/sound/pci/au88x0/au88x0_pcm.c index 33f0ba5..62e9591 100644 --- a/sound/pci/au88x0/au88x0_pcm.c +++ b/sound/pci/au88x0/au88x0_pcm.c @@ -44,10 +44,10 @@ static struct snd_pcm_hardware snd_vortex_playback_hw_adb = { .channels_min = 1, .channels_max = 2, .buffer_bytes_max = 0x10000, - .period_bytes_min = 0x1, + .period_bytes_min = 0x20, .period_bytes_max = 0x1000, .periods_min = 2, - .periods_max = 32, + .periods_max = 1024, }; #ifndef CHIP_AU8820 @@ -140,6 +140,9 @@ static int snd_vortex_pcm_open(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0) return err; + snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 64); + if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) { #ifndef CHIP_AU8820 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) { |
