On Thu, 13 May 2010, Guennadi Liakhovetski wrote: > On Thu, 13 May 2010, Ian Molton wrote: > > > Might be worth exposing for now, whilst the feature is new. but yes, > > automatic select yes on all the platforms you are comfortable with. > > > > Im not sure if it should be per MFD or per platform. I tend to think > > the latter, given that its slave DMA and thus I could have the same > > MFD in platforms with different CPUs (eg. e740 and e800) where a CPU > > bug might upset one but not the other. > > So far I went for the least effort - not exposed, selected by MFDs. If we > ever have a need to change this, e.g., make it user-selectable or per > platform, we can always do so later. For now all SuperH / SH-Mobile > platforms I tested can use this driver with DMA. Expect updated patches > shortly. One more thing I forgot to mention - even if your MFD enables DMA, it still can further decide when (on which platforms) to enable and when to disable DMA by providing or not providing DMA slave configuration to tmio_mmc. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
