static irqreturn_t
snd_nm256_intr_check(struct nm256 *chip)
{
if (chip->badintrcount++ > 1000) {
/*
* I'm not sure if the best thing is to stop the card from
* playing or just release the interrupt (after all, we're in
* a bad situation, so doing fancy stuff may not be such a good
* idea).
*
* I worry about the card engine continuing to play noise
* over and over, however--that could become a very
* obnoxious problem. And we know that when this usually
* happens things are fairly safe, it just means the user's
* inserted a PCMCIA card and someone's spamming us with IRQ 9s.
*/
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
snd_nm256_playback_stop(chip);
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
snd_nm256_capture_stop(chip);
chip->badintrcount = 0;
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int
snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct nm256 *chip = snd_pcm_substream_chip(substream);
struct nm256_stream *s = substream->runtime->private_data;
int err = 0;
if (snd_BUG_ON(!s))
return -ENXIO;
spin_lock(&chip->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (! s->running) {
snd_nm256_capture_start(chip, s, substream);
s->running = 1;
}
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (s->running) {
snd_nm256_capture_stop(chip);
s->running = 0;
}
break;
default:
err = -EINVAL;
break;
}
spin_unlock(&chip->reg_lock);
return err;
}
static int snd_nm256_free(nm256_t *chip)
{
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
snd_nm256_playback_stop(chip);
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
snd_nm256_capture_stop(chip);
if (chip->irq >= 0)
synchronize_irq(chip->irq);
if (chip->cport)
iounmap(chip->cport);
if (chip->buffer)
iounmap(chip->buffer);
if (chip->res_cport) {
release_resource(chip->res_cport);
kfree_nocheck(chip->res_cport);
}
if (chip->res_buffer) {
release_resource(chip->res_buffer);
kfree_nocheck(chip->res_buffer);
}
if (chip->irq >= 0)
free_irq(chip->irq, (void*)chip);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
static irqreturn_t
snd_nm256_intr_check(struct nm256 *chip)
{
if (chip->badintrcount++ > 1000) {
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
snd_nm256_playback_stop(chip);
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
snd_nm256_capture_stop(chip);
chip->badintrcount = 0;
return IRQ_HANDLED;
}
return IRQ_NONE;
}
static int snd_nm256_free(struct nm256 *chip)
{
if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
snd_nm256_playback_stop(chip);
if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
snd_nm256_capture_stop(chip);
if (chip->irq >= 0)
free_irq(chip->irq, chip);
if (chip->cport)
iounmap(chip->cport);
if (chip->buffer)
iounmap(chip->buffer);
release_and_free_resource(chip->res_cport);
release_and_free_resource(chip->res_buffer);
pci_disable_device(chip->pci);
kfree(chip->ac97_regs);
kfree(chip);
return 0;
}