Hello, On Thursday 07 May 2009 21:18:34 ext Fernando Governatore wrote: > Hello, > > I'm new to kernel development and so I'm a bit confused on how to do > things here. I need to use the McBSP with Multi-Channel enabled and > using DMA to transfer the data. > > The data will be PCM sound and I will have 4 cards attached to this > McBSP. I'm using OMAP35xx. > > From what I've seen, I have to change the files: > - arch/arm/plat-omap/mcbsp.c > - arch/arm/mach-omap2/mcbsp.c > to support multi channel. Is that it? or I would need more changes? > > Is there something that I would need to change in DMA implementation? > Do you know where I can get an example or documentation? Take a look at the sound-2.6 tree's topic/asoc branch: http://git.kernel.org/?p=linux/kernel/git/tiwai/sound-2.6.git;a=shortlog;h=topic/asoc The omap3beagle has support for 4 channel audio playback (combination of McBSP+TWL4030 codec). Files that could be interesting for you: sound/soc/omap/omap3beagle.c sound/soc/omap/omap-mcbsp.c sound/soc/codecs/twl4030.c > > Thanks, > Fernando -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
