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ALSA: jazz16: refine dma and irq selection

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Narrow the dma and irq selection after the DOS driver.

Add ALSA configuration description as well.

Signed-off-by: Krzysztof Helt <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Krzysztof Helt 2009-12-23 18:02:41 +01:00 • committed by Takashi Iwai
commit 44eba3e82b
3 changed files with 37 additions and 2 deletions
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21
sound/isa/sb/jazz16.c
View file

@ -189,10 +189,29 @@ static int __devinit snd_jazz16_match(struct device *devptr, unsigned int dev)
if (port[dev] == SNDRV_AUTO_PORT) {
snd_printk(KERN_ERR "please specify port\n");
return 0;
} else if (port[dev] == 0x200 || (port[dev] & ~0x270)) {
snd_printk(KERN_ERR "incorrect port specified\n");
return 0;
}
if (dma8[dev] != SNDRV_AUTO_DMA &&
dma8[dev] != 1 && dma8[dev] != 3) {
snd_printk(KERN_ERR "dma8 must be 1 or 3\n");
return 0;
}
if (dma16[dev] != SNDRV_AUTO_DMA &&
dma16[dev] != 5 && dma16[dev] != 7) {
snd_printk(KERN_ERR "dma16 must be 5 or 7");
snd_printk(KERN_ERR "dma16 must be 5 or 7\n");
return 0;
}
if (mpu_port[dev] != SNDRV_AUTO_PORT &&
(mpu_port[dev] & ~0x030) != 0x300) {
snd_printk(KERN_ERR "incorrect mpu_port specified\n");
return 0;
}
if (mpu_irq[dev] != SNDRV_AUTO_DMA &&
mpu_irq[dev] != 2 && mpu_irq[dev] != 3 &&
mpu_irq[dev] != 5 && mpu_irq[dev] != 7) {
snd_printk(KERN_ERR "mpu_irq must be 2, 3, 5 or 7\n");
return 0;
}
return 1;

3
sound/isa/sb/sb8_main.c
View file

@ -510,7 +510,8 @@ static int snd_sb8_open(struct snd_pcm_substream *substream)
}
switch (chip->hardware) {
case SB_HW_JAZZ16:
runtime->hw.formats |= SNDRV_PCM_FMTBIT_S16_LE;
if (chip->dma16 == 5 || chip->dma16 == 7)
runtime->hw.formats |= SNDRV_PCM_FMTBIT_S16_LE;
runtime->hw.rates |= SNDRV_PCM_RATE_8000_48000;
runtime->hw.rate_min = 4000;
runtime->hw.rate_max = 50000;