Hi I'm writing an ac97 driver with interrupt mode,below is my
code:staticirqreturn_t ac97_interrupt_handler(int irq,void *dev_id,struct
pt_regs *regs){ disable_irq(7); wake_up_interruptible(ac97_queue);
return IRQ_HANDLED;} static int xilinx_ac97_write(struct file *filp,char
*buffer,size_t count,loff_t *ppos){ ......
if(XAC97_isInFIFOFull(baseAddress))
wait_event_interruptible(ac97_queue,...); else
XAC97_mSetInFifoData(baseAddress,...); ......} Int the write
function,when the play back fifo is not full,I send the PCM code to the
fifo,else I make the write process sleep,and in the interrupt handler(when the
fifo half empty,an interrupt occure),I wake up the write process,and go on
write PCM code to the fifo. But I find the play speed is rather faster than
regular and can't hear the voice(I have set the pcm rate correctly),I don't
know why,can anyone give some advice on writing interupt handler or send me a
copy of ac97 driver with interrupt mode? thanks a lot_______________________________________________
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