Messages in this thread Patch in this message |  | | | Subject | Re: 2.6.0-test1+ Alsa + Intel 82801CA/CAM AC'97 Audio OOPS | | From | Valdis.Kletnieks@vt ... | | Date | Sat, 19 Jul 2003 00:46:05 -0400 | |
On Fri, 18 Jul 2003 22:10:12 EDT, Simon Boulet <simon.boulet@divahost.net> said:
> Also, the OSS (non-ALSA) Intel ICH (i8xx) loads correctly but the sound
> output is slow (rate or clocking problem?). My sound was fine under
> 2.4.21.>
> i810_audio: only 48Khz playback available.
> i810_audio: setting clocking to 64937
I was having problems with i810_audio clocking as well. It turned out to be
the Intel Speedstep support, of all things. *IF* your kernel includes:
CONFIG_X86_SPEEDSTEP_ICH=y
it was possible to end up with a broken value for loops_per_jiffie. I've
attached a patch that fixes the bug and does a few cleanups...
If you don't have the SpeedStep support in your kernel, then your
problem is elsewhere... Good luck... ;)
/Valdis
--- arch/i386/kernel/cpu/cpufreq/speedstep-ich.c.linus 2003-07-03 23:31:43.000000000 -0400
+++ arch/i386/kernel/cpu/cpufreq/speedstep-ich.c 2003-07-04 09:57:07.981299808 -0400
@@ -77,15 +77,17 @@
u8 value;
unsigned long flags;
struct cpufreq_freqs freqs;
+ int newfreq;
if (!speedstep_chipset_dev || (state > 0x1))
return;
freqs.old = speedstep_get_processor_frequency(speedstep_processor);
- freqs.new = speedstep_freqs[SPEEDSTEP_LOW].frequency;
+ freqs.new = speedstep_freqs[state].frequency;
freqs.cpu = 0; /* speedstep.c is UP only driver */
- if (notify)
+ /* make sure we've initialized before calling notify */
+ if (notify && (freqs.new != 0))
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
/* get PMBASE */
@@ -136,13 +138,16 @@
dprintk(KERN_DEBUG "cpufreq: read at pmbase 0x%x + 0x50 returned 0x%x\n", pmbase, value);
+ /* freqs.new may not be set yet - need local copy */
+ newfreq = speedstep_get_processor_frequency(speedstep_processor);
if (state == (value & 0x1)) {
- dprintk (KERN_INFO "cpufreq: change to %u MHz succeeded\n", (freqs.new / 1000));
+ dprintk (KERN_INFO "cpufreq: change to %u MHz succeeded\n", (newfreq / 1000));
} else {
printk (KERN_ERR "cpufreq: change failed - I/O error\n");
}
- if (notify)
+ /* Make sure we're initialized before calling notify */
+ if (notify && (freqs.new != 0))
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
return;
@@ -295,7 +300,7 @@
return -EIO;
dprintk(KERN_INFO "cpufreq: currently at %s speed setting - %i MHz\n",
- (speed == speedstep_low_freq) ? "low" : "high",
+ (speed == speedstep_freqs[SPEEDSTEP_LOW].frequency) ? "low" : "high",
(speed / 1000));
/* cpuinfo and default policy values */[unhandled content-type:application/pgp-signature] |  |