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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>
This commit is contained in:
Takashi Iwai 2008-07-30 15:23:06 +02:00 committed by Jaroslav Kysela
parent a2e3961d0a
commit 5503600a1c
1 changed files with 9 additions and 10 deletions
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19
sound/pci/via82xx.c
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@ -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;
}