Ivan Kokshaysky wrote: > Sounds like a DMA screwup. Agreed. There's a comment line near the top of the es18xx.c that has been there for a *long* time: Support for 16 bit DMA seems to be broken. I've no hardware to tune it. Supposedly with the ES1888, dma1 is for capture, dma2 is for playback. dma2 == 5 is a 16-bit channel, yes? That could explain much... As for the values "chosen" for dma1 and dma2, they are the ones that keep showing up in the Alpha sound "howto" postings/documents. The driver can cope with dma1 == dma2 by enforcing half-duplex mode in software, but the OSS "sb" driver works fine with the indicated DMA channel values. Besides, if the ES1888 is really capable of full-duplex operation, a potential half-duplex workaround doesn't have much appeal. > I wonder if it still works on x86 - perhaps you ought to ask ALSA folks. I tried contacting the driver authors as indicated in the driver source file. Christian Fischbach seems to have disappeared. Still waiting to hear from Abramo Bagnara. -- ------------------------------------------------------------------------ Bob Tracy | "I was a beta tester for dirt. They never did rct@xxxxxxxx | get all the bugs out." - Steve McGrew on /. ------------------------------------------------------------------------ -- To unsubscribe from this list: send the line "unsubscribe linux-alpha" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
