Messages in this thread | | | From | NZG <> | Date | Fri, 9 Mar 2007 10:31:19 -0600 | Subject | Re: passing function pointers through platform devices? |
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On Wednesday 07 March 2007 11:55 am, David Brownell wrote: > > I'm developing an SPI- bus >MMC/SD block driver translation layer. > > Another one? There's already been significant work in that area. See for > example > > http://marc.theaimsgroup.com/?l=linux-kernel&m=117000652529003&w=2 Nice, I'll build on that, my previous work ignored the SPI/MMC layers (because they didn't exist at the time) and just build a stacked driver on a character SPI driver. This gives me some direction as to how to proceed.
> Which admittedly didn't behave when I just put it onto my test rig, > but seems nonetheless to be a significant step forward. It's not like > everyone has hardware that can use such a driver after all! True, but it's fairly common right now, until every microcontroller gets a hardware SD controller (which seems to be the trend)
> That's how it's done in that patch. The model being what the PXA MMC/SD > card driver does, since that's the most generic model I found ... handling > for example systems which need to poll for card detect, as well as ones > that can use real gpio based IRQs. The mmc_spi driver doesn't need to know > which kind of platform it's got. Sounds good, thanks
NZG
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