int msnd_enable_irq(multisound_dev_t *dev)
{
unsigned long flags;
if (dev->irq_ref++)
return 0;
printk(KERN_DEBUG LOGNAME ": Enabling IRQ\n");
spin_lock_irqsave(&dev->lock, flags);
if (msnd_wait_TXDE(dev) == 0) {
msnd_outb(msnd_inb(dev->io + HP_ICR) | HPICR_TREQ, dev->io + HP_ICR);
if (dev->type == msndClassic)
msnd_outb(dev->irqid, dev->io + HP_IRQM);
msnd_outb(msnd_inb(dev->io + HP_ICR) & ~HPICR_TREQ, dev->io + HP_ICR);
msnd_outb(msnd_inb(dev->io + HP_ICR) | HPICR_RREQ, dev->io + HP_ICR);
enable_irq(dev->irq);
msnd_init_queue(dev->DSPQ, dev->dspq_data_buff, dev->dspq_buff_size);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
spin_unlock_irqrestore(&dev->lock, flags);
printk(KERN_DEBUG LOGNAME ": Enable IRQ failed\n");
return -EIO;
}
int msnd_disable_irq(multisound_dev_t *dev)
{
unsigned long flags;
if (--dev->irq_ref > 0)
return 0;
if (dev->irq_ref < 0)
printk(KERN_DEBUG LOGNAME ": IRQ ref count is %d\n", dev->irq_ref);
printk(KERN_DEBUG LOGNAME ": Disabling IRQ\n");
spin_lock_irqsave(&dev->lock, flags);
if (msnd_wait_TXDE(dev) == 0) {
msnd_outb(msnd_inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
if (dev->type == msndClassic)
msnd_outb(HPIRQ_NONE, dev->io + HP_IRQM);
disable_irq(dev->irq);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
spin_unlock_irqrestore(&dev->lock, flags);
printk(KERN_DEBUG LOGNAME ": Disable IRQ failed\n");
return -EIO;
}
int msnd_disable_irq(multisound_dev_t *dev)
{
unsigned long flags;
if (--dev->irq_ref > 0)
return 0;
if (dev->irq_ref < 0)
;
;
spin_lock_irqsave(&dev->lock, flags);
if (msnd_wait_TXDE(dev) == 0) {
msnd_outb(msnd_inb(dev->io + HP_ICR) & ~HPICR_RREQ, dev->io + HP_ICR);
if (dev->type == msndClassic)
msnd_outb(HPIRQ_NONE, dev->io + HP_IRQM);
disable_irq(dev->irq);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
spin_unlock_irqrestore(&dev->lock, flags);
;
return -EIO;
}
int msnd_send_word(multisound_dev_t *dev, unsigned char high,
unsigned char mid, unsigned char low)
{
register unsigned int io = dev->io;
if (msnd_wait_TXDE(dev) == 0) {
msnd_outb(high, io + HP_TXH);
msnd_outb(mid, io + HP_TXM);
msnd_outb(low, io + HP_TXL);
return 0;
}
printk(KERN_DEBUG LOGNAME ": Send host word timeout\n");
return -EIO;
}
int msnd_send_word(multisound_dev_t *dev, unsigned char high,
unsigned char mid, unsigned char low)
{
register unsigned int io = dev->io;
if (msnd_wait_TXDE(dev) == 0) {
msnd_outb(high, io + HP_TXH);
msnd_outb(mid, io + HP_TXM);
msnd_outb(low, io + HP_TXL);
return 0;
}
;
return -EIO;
}
int msnd_send_dsp_cmd(multisound_dev_t *dev, BYTE cmd)
{
unsigned long flags;
spin_lock_irqsave(&dev->lock, flags);
if (msnd_wait_HC0(dev) == 0) {
msnd_outb(cmd, dev->io + HP_CVR);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
spin_unlock_irqrestore(&dev->lock, flags);
printk(KERN_DEBUG LOGNAME ": Send DSP command timeout\n");
return -EIO;
}
int msnd_send_dsp_cmd(multisound_dev_t *dev, BYTE cmd)
{
unsigned long flags;
spin_lock_irqsave(&dev->lock, flags);
if (msnd_wait_HC0(dev) == 0) {
msnd_outb(cmd, dev->io + HP_CVR);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
spin_unlock_irqrestore(&dev->lock, flags);
;
return -EIO;
}
