On Tue, 2010-03-02 at 15:52 +0200, Eero Nurkkala wrote: > On Tue, 2010-03-02 at 14:39 +0100, Ujfalusi Peter (Nokia-D/Tampere) > wrote: > > New function for reading the XBUFFSTAT register, which holds > > the fill state of the transmit buffer on McBSP. > > > > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx> > > --- > > Reading the XBUFFSTAT register is by no means accurate. > IIRC, it reports the buffer status incorrectly about 1/50 times > on average (@ 48000khz); with simple math, it may be read during the DMA > burst. Or is it guaranteed not being read during DMA transfer / have > you otherwise verified the behavior? I agree, I've also seen XBUFFSTAT giving complete garbage with mcbsp3. Liam -- Freelance Developer, SlimLogic Ltd ASoC and Voltage Regulator Maintainer. http://www.slimlogic.co.uk _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
