On Tue, 5 Mar 2002, Andrea Venturi wrote:
[snip]
> 1. audio hal2: i saw in the cvs.sgi.com kernel the OSS hal2.* files;
> what about the guenther alsa0.9 port? is it finished? what about iec958
> spdif support?
I can't say anything about ALSA 0.9 port. I decided for OSS driver,
because I wanded to listen music and there was no driver. OSS is much
better documented interface than ALSA.
Sometimes you get HAL2 timeout when closing /dev/dsp. It is my fault and
I'm sorry for it. Following patch solves it.
Index: linux/drivers/sound/hal2.c
===================================================================
RCS file: /cvs/linux/drivers/sound/hal2.c,v
retrieving revision 1.3.2.5
diff -u -r1.3.2.5 hal2.c
--- linux/drivers/sound/hal2.c 2002/02/15 02:14:40 1.3.2.5
+++ linux/drivers/sound/hal2.c 2002/03/04 12:33:53
@@ -691,32 +691,25 @@
DECLARE_WAITQUEUE(wait, current);
hal2_codec_t *dac = &hal2->dac;
int ret = 0;
- signed long timeout = 1 + 1000 * H2_BUFFER_SIZE * 2 * dac->voices *
+ signed long timeout = 1000 * H2_BUFFER_SIZE * 2 * dac->voices *
HZ / dac->sample_rate / 900;
down(&dac->sem);
- while (dac->tail->info.cnt > 0 && ret == 0) {
+ while (dac->pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_ISACT) {
add_wait_queue(&dac->dma_wait, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
+ set_current_state(TASK_UNINTERRUPTIBLE);
if (!schedule_timeout(timeout))
/* We may get bogus timeout when system is
* heavily loaded */
if (dac->tail->info.cnt) {
printk("HAL2: timeout...\n");
- ret = -ETIME;
+ hal2_stop_dac(hal2);
+ hal2_reset_dac_pointer(hal2);
}
- if (signal_pending(current))
- ret = -ERESTARTSYS;
remove_wait_queue(&dac->dma_wait, &wait);
}
- /* Make sure that DMA is stopped */
- if (dac->pbus.pbus->pbdma_ctrl & HPC3_PDMACTRL_ISACT) {
- hal2_stop_dac(hal2);
- hal2_reset_dac_pointer(hal2);
- }
-
up(&dac->sem);
return ret;
@@ -1108,7 +1101,7 @@
} else {
do {
/* ~10% longer */
- signed long timeout = 1 + 1000 * H2_BUFFER_SIZE *
+ signed long timeout = 1000 * H2_BUFFER_SIZE *
2 * adc->voices * HZ / adc->sample_rate / 900;
DECLARE_WAITQUEUE(wait, current);
ssize_t cnt = 0;
@@ -1169,7 +1162,7 @@
} else {
do {
/* ~10% longer */
- signed long timeout = 1 + 1000 * H2_BUFFER_SIZE *
+ signed long timeout = 1000 * H2_BUFFER_SIZE *
2 * dac->voices * HZ / dac->sample_rate / 900;
DECLARE_WAITQUEUE(wait, current);
ssize_t cnt = 0;
recording doesn't work and will not work until someone provide better
documentation.
btw, what is iec958 spdig?
> 2. isdn: there is a siemens isac-s chip (BTW i didn't see the hscx
> twin): is it supported now? it should be not to difficult to leverage
> the ia32-isdn hisax (passive) isac driver _if_ the hpc3 delivers the
> irq? what do you think about it?
there is currenty no support. any documentation available?
