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[ALSA] es1938 - Clean up and fix trigger in PM

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Modules: ES1938 driver

- Clean up the last PM fix
- Add TRIGGER_SUSPEND/RESUME to disable/enable DMA properly during PM

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-10-10 13:42:24 +02:00 committed by Jaroslav Kysela
parent c913f69b0d
commit 93b9f42637
1 changed files with 10 additions and 2 deletions
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12
sound/pci/es1938.c
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@ -543,10 +543,12 @@ static int snd_es1938_capture_trigger(snd_pcm_substream_t * substream,
int val;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
val = 0x0f;
chip->active |= ADC1;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
val = 0x00;
chip->active &= ~ADC1;
break;
@ -563,6 +565,7 @@ static int snd_es1938_playback1_trigger(snd_pcm_substream_t * substream,
es1938_t *chip = snd_pcm_substream_chip(substream);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
/* According to the documentation this should be:
0x13 but that value may randomly swap stereo channels */
snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
@ -575,6 +578,7 @@ static int snd_es1938_playback1_trigger(snd_pcm_substream_t * substream,
chip->active |= DAC2;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
outb(0, SLIO_REG(chip, AUDIO2MODE));
snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
chip->active &= ~DAC2;
@ -592,10 +596,12 @@ static int snd_es1938_playback2_trigger(snd_pcm_substream_t * substream,
int val;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
val = 5;
chip->active |= DAC1;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
val = 0;
chip->active &= ~DAC1;
break;
@ -1390,7 +1396,7 @@ static int es1938_suspend(snd_card_t *card, pm_message_t state)
*d = snd_es1938_reg_read(chip, *s);
outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
if (chip->irq >= 0)
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
pci_disable_device(chip->pci);
return 0;
@ -1402,7 +1408,9 @@ static int es1938_resume(snd_card_t *card)
unsigned char *s, *d;
pci_enable_device(chip->pci);
request_irq(chip->pci->irq, snd_es1938_interrupt, SA_INTERRUPT|SA_SHIRQ, "ES1938", (void *)chip);
request_irq(chip->pci->irq, snd_es1938_interrupt,
SA_INTERRUPT|SA_SHIRQ, "ES1938", (void *)chip);
chip->irq = chip->pci->irq;
snd_es1938_chip_init(chip);
/* restore mixer-related registers */