ALSA: ice1724: increase SPDIF and independent stereo buffer sizes
authorRobert Hancock <hancockrwd@gmail.com>
Thu, 8 Oct 2009 02:19:21 +0000 (20:19 -0600)
committerTakashi Iwai <tiwai@suse.de>
Thu, 8 Oct 2009 09:48:11 +0000 (11:48 +0200)
Increase the default and maximum PCM buffer prellocation size for ice1724's
SPDIF and independent stereo pair outputs to 256K, which is the hardware's
maximum supported size. This allows a reduction in interrupt rate and
potentially power usage when an application is not latency-critical.

Signed-off-by: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/ice1712/ice1724.c

index c24f268..76b717d 100644 (file)
@@ -1294,7 +1294,7 @@ static int __devinit snd_vt1724_pcm_spdif(struct snd_ice1712 *ice, int device)
 
        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                              snd_dma_pci_data(ice->pci),
-                                             64*1024, 64*1024);
+                                             256*1024, 256*1024);
 
        ice->pcm = pcm;
 
@@ -1408,7 +1408,7 @@ static int __devinit snd_vt1724_pcm_indep(struct snd_ice1712 *ice, int device)
 
        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                              snd_dma_pci_data(ice->pci),
-                                             64*1024, 64*1024);
+                                             256*1024, 256*1024);
 
        ice->pcm_ds = pcm;