예제 #1
0
static int
snd_ad1889_free(struct snd_ad1889 *chip)
{
	if (chip->irq < 0)
		goto skip_hw;

	spin_lock_irq(&chip->lock);

	ad1889_mute(chip);

	/* Turn off interrupt on count and zero DMA registers */
	ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);

	/* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
	ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
	ad1889_readl(chip, AD_DMA_DISR);	/* flush, dammit! */

	spin_unlock_irq(&chip->lock);

	synchronize_irq(chip->irq);
	
	if (chip->irq >= 0)
		free_irq(chip->irq, chip);

skip_hw:
	if (chip->iobase)
		iounmap(chip->iobase);

	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);

	kfree(chip);
	return 0;
}
예제 #2
0
static irqreturn_t
snd_ad1889_interrupt(int irq, void *dev_id)
{
	unsigned long st;
	struct snd_ad1889 *chip = dev_id;

	st = ad1889_readl(chip, AD_DMA_DISR);

	/* clear ISR */
	ad1889_writel(chip, AD_DMA_DISR, st);

	st &= AD_INTR_MASK;

	if (unlikely(!st))
		return IRQ_NONE;

	if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
		ad1889_debug("Unexpected master or target abort interrupt!\n");

	if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
		snd_pcm_period_elapsed(chip->psubs);
	if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
		snd_pcm_period_elapsed(chip->csubs);

	return IRQ_HANDLED;
}
예제 #3
0
static int
snd_ad1889_free(struct snd_ad1889 *chip)
{
	if (chip->irq < 0)
		goto skip_hw;

	spin_lock_irq(&chip->lock);

	ad1889_mute(chip);

	
	ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);

	
	ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
	ad1889_readl(chip, AD_DMA_DISR);	

	spin_unlock_irq(&chip->lock);

	if (chip->irq >= 0)
		free_irq(chip->irq, chip);

skip_hw:
	if (chip->iobase)
		iounmap(chip->iobase);

	pci_release_regions(chip->pci);
	pci_disable_device(chip->pci);

	kfree(chip);
	return 0;
}
예제 #4
0
/* Called in atomic context with IRQ disabled */
static snd_pcm_uframes_t
snd_ad1889_capture_pointer(struct snd_pcm_substream *ss)
{
	size_t ptr = 0;
	struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);

	if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
		return 0;

	ptr = ad1889_readl(chip, AD_DMA_ADCCA);
	ptr -= chip->ramc.addr;

	snd_assert((ptr >= 0) && (ptr < chip->ramc.size), return 0);
	
	return bytes_to_frames(ss->runtime, ptr);
}
예제 #5
0
/* Called in atomic context with IRQ disabled */
static snd_pcm_uframes_t
snd_ad1889_playback_pointer(struct snd_pcm_substream *ss)
{
	size_t ptr = 0;
	struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);

	if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
		return 0;

	ptr = ad1889_readl(chip, AD_DMA_WAVCA);
	ptr -= chip->wave.addr;
	
	snd_assert((ptr >= 0) && (ptr < chip->wave.size), return 0);
	
	return bytes_to_frames(ss->runtime, ptr);
}