On Sun, Jun 02, 2013 at 00:57:26, Mark Brown wrote: > On Fri, May 31, 2013 at 03:43:05PM +0530, Hebbar Gururaja wrote: > > Amend the spi omap controller to optionally take a pin control > > handle and set the state of the pins to: > > > > - "default" on boot, resume and before performing an spi transfer > > - "idle" after initial default, after resume default, and after each > > spi xfer > > - "sleep" on suspend() > > Looking at this code I can't really see what's OMAP-specific about it - > exactly the same flow should apply to pretty much any SPI controller, > especially given that the code will happily ignore missing states. > We're just setting the idle state when not actively transferring data > which seems sensible and generic. > > This suggests to me that we should be adding this code into the core, > probably joined up with the transfer_one_message stuff, so that any > hardware which has an idle state will be able to get the benefit. Can > anyone think of a reason why we shouldn't do that?
Let me pull out some info about these and come back > Regards, Gururaja -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
