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authorTakashi Iwai <tiwai@suse.de>2008-07-30 17:23:06 +0400
committerJaroslav Kysela <perex@perex.cz>2008-08-25 11:57:43 +0400
commit5503600a1c5c2c11e14ff428b5d07a1018927bd6 (patch)
tree80d8dcb53337abb5af9fc4ac3f5ca98b7063c0c0 /sound/pci/via82xx.c
parenta2e3961d0a26870eb23b70edab6814c7f08ce2e0 (diff)
downloadlinux-5503600a1c5c2c11e14ff428b5d07a1018927bd6.tar.xz
ALSA: via82xx - check continuous pages in buffer setup
Check continuous pages in the buffer set up so that the number of BDL is reduced. Also increased the max buffer size. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/via82xx.c')
-rw-r--r--sound/pci/via82xx.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index 57e33d7df5fa..1aafe956ee2b 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -313,6 +313,7 @@ struct snd_via_sg_table {
} ;
#define VIA_TABLE_SIZE 255
+#define VIA_MAX_BUFSIZE (1<<24)
struct viadev {
unsigned int reg_offset;
@@ -456,9 +457,7 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre
}
addr = snd_pcm_sgbuf_get_addr(substream, ofs);
((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
- r = PAGE_SIZE - (ofs % PAGE_SIZE);
- if (rest < r)
- r = rest;
+ r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
rest -= r;
if (! rest) {
if (i == periods - 1)
@@ -1147,9 +1146,9 @@ static struct snd_pcm_hardware snd_via82xx_hw =
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
- .buffer_bytes_max = 128 * 1024,
+ .buffer_bytes_max = VIA_MAX_BUFSIZE,
.period_bytes_min = 32,
- .period_bytes_max = 128 * 1024,
+ .period_bytes_max = VIA_MAX_BUFSIZE / 2,
.periods_min = 2,
.periods_max = VIA_TABLE_SIZE / 2,
.fifo_size = 0,
@@ -1403,7 +1402,7 @@ static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 64*1024, 128*1024);
+ 64*1024, VIA_MAX_BUFSIZE);
/* PCM #1: multi-channel playback and 2nd capture */
err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
@@ -1421,7 +1420,7 @@ static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 64*1024, 128*1024);
+ 64*1024, VIA_MAX_BUFSIZE);
return 0;
}
@@ -1455,7 +1454,7 @@ static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 64*1024, 128*1024);
+ 64*1024, VIA_MAX_BUFSIZE);
/* SPDIF supported? */
if (! ac97_can_spdif(chip->ac97))
@@ -1474,7 +1473,7 @@ static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 64*1024, 128*1024)
+ 64*1024, VIA_MAX_BUFSIZE);
return 0;
}
@@ -1504,7 +1503,7 @@ static int __devinit snd_via686_pcm_new(struct via82xx *chip)
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(chip->pci),
- 64*1024, 128*1024);
+ 64*1024, VIA_MAX_BUFSIZE);
return 0;
}