diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2008-01-28 08:34:21 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-01-31 17:30:17 +0100 |
| commit | 1e821dd2763c97df1a0a451e553d218cb8886cd7 (patch) | |
| tree | c09376cd0e36251f1c83ec6bf4e52a7226db7811 /sound/pci/oxygen/oxygen_lib.c | |
| parent | 911b499af45e879ccf4b8db234278a7136d056c9 (diff) | |
| download | lwn-1e821dd2763c97df1a0a451e553d218cb8886cd7.tar.gz lwn-1e821dd2763c97df1a0a451e553d218cb8886cd7.zip | |
[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.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c index d98867c1f2d4..de6bf41c3e96 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); |