At Tue, 8 Jul 2003 08:58:21 -0500, Ryan Underwood wrote: > > > Hi Takashi, > > On Tue, Jul 08, 2003 at 12:50:05PM +0200, Takashi Iwai wrote: > > > > > One issue is to note, I don't know if this is a problem with the ad1848 > > > driver in general or what; if I cat a 11025hz mono 8-bit file to > > > /dev/dsp, the sound comes out verrrrry slllloooowwwllly. But using > > > aplay, it works fine. > > > > could you check the parameters in /proc/asound/card0/pcm0p/sub0/* > > during playback via oss? > > The results are pasted below -- what is strange is that aplay identifies > the file as 11025Hz but apparently the OSS driver thinks it is 8000Hz > data. ah, i understand. you cannot cat to /dev/dsp in general. if you do this, it's supposed to be 8kHz mono samples.
> > > I am not sure the best way to test the power managmeent code -- it > > > doesn't crash the machine at least. ;) > > > > it looks ok - but i guess we need to restore the registers (mixer > > status, etc) too. > > You are right -- I just checked the registers before and after flipping > that bit, and it seems they are set to default values afterwards, which > would seem to support the possibility that this is a power management > feature. > > The main thing I was wondering about is if some other machine with a > AD1848 goes into D0 for instance, and the suspend function does nothing > (since it is not a thinkpad), is the system still in an ok state as long > as the card's status is not set to D0 when the card is actually not in > D0? Does that make sense? if the chip supports really something the power management, we should implement it, too. but AFAIK, ad1848 itself has no such a control. so, the suspend callback is expected just to save the last status so that it can be restored in the resume callback. Takashi ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
