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authorClemens Ladisch <clemens@ladisch.de>2008-01-28 08:34:21 +0100
committerJaroslav Kysela <perex@perex.cz>2008-01-31 17:30:17 +0100
commit1e821dd2763c97df1a0a451e553d218cb8886cd7 (patch)
treec09376cd0e36251f1c83ec6bf4e52a7226db7811 /sound/pci/oxygen/oxygen_lib.c
parent911b499af45e879ccf4b8db234278a7136d056c9 (diff)
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[ALSA] oxygen: use AC97 interrupt
After an AC97 register read or write, use the AC97 interrupt instead of polling to wait for the access to be completed. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/oxygen/oxygen_lib.c')
-rw-r--r--sound/pci/oxygen/oxygen_lib.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index d98867c1f2d..de6bf41c3e9 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -53,7 +53,8 @@ static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
OXYGEN_CHANNEL_MULTICH |
OXYGEN_CHANNEL_AC97 |
OXYGEN_INT_SPDIF_IN_DETECT |
- OXYGEN_INT_GPIO);
+ OXYGEN_INT_GPIO |
+ OXYGEN_INT_AC97);
if (clear) {
if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
@@ -89,6 +90,9 @@ static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
if ((status & OXYGEN_INT_MIDI) && chip->midi)
snd_mpu401_uart_interrupt(0, chip->midi->private_data);
+ if (status & OXYGEN_INT_AC97)
+ wake_up(&chip->ac97_waitqueue);
+
return IRQ_HANDLED;
}
@@ -306,7 +310,9 @@ static void __devinit oxygen_init(struct oxygen *chip)
(2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
(3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
- oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
+ oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
+ OXYGEN_AC97_INT_READ_DONE |
+ OXYGEN_AC97_INT_WRITE_DONE);
oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
if (!(chip->has_ac97_0 | chip->has_ac97_1))
@@ -408,6 +414,7 @@ int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
mutex_init(&chip->mutex);
INIT_WORK(&chip->spdif_input_bits_work,
oxygen_spdif_input_bits_changed);
+ init_waitqueue_head(&chip->ac97_waitqueue);
err = pci_enable_device(pci);
if (err < 0)
@@ -471,7 +478,7 @@ int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
oxygen_proc_init(chip);
spin_lock_irq(&chip->reg_lock);
- chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
+ chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT | OXYGEN_INT_AC97;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
spin_unlock_irq(&chip->reg_lock);