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ALSA: es1938: Support PCM sync_stop 

The driver invokes snd_pcm_period_elapsed() simply from the interrupt
handler.  Set card->sync_irq for enabling the missing sync_stop PCM
operation.  It's cleared and reset dynamically at IRQ re-acquiring for
the PM resume, too.

Link: https://lore.kernel.org/r/20191210063454.31603-19-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-12-10 07:34:17 +01:00
parent 83720eef26
commit 6b276e6281
1 changed files with 3 additions and 0 deletions
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3
sound/pci/es1938.c
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@ -1444,6 +1444,7 @@ static int es1938_suspend(struct device *dev)
if (chip->irq >= 0) {
free_irq(chip->irq, chip);
chip->irq = -1;
card->sync_irq = -1;
}
return 0;
}
@ -1463,6 +1464,7 @@ static int es1938_resume(struct device *dev)
return -EIO;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
snd_es1938_chip_init(chip);
/* restore mixer-related registers */
@ -1591,6 +1593,7 @@ static int snd_es1938_create(struct snd_card *card,
return -EBUSY;
}
chip->irq = pci->irq;
card->sync_irq = chip->irq;
dev_dbg(card->dev,
"create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);