Hi Mark, On Mon, Jun 14, 2010 at 01:13:49PM +0100, Mark Brown wrote: > On Mon, Jun 14, 2010 at 02:09:43PM +0200, Luotao Fu wrote: > > On Mon, Jun 14, 2010 at 12:51:23PM +0100, Mark Brown wrote: > > > > Assuming you're able to do interrupts on the GPIOs you should now be > > > able to implement to_irq() as well. > > > The chip can indeed generate irqs on the GPIO line. I, however, kept out > > the irq stuff for now because i want to get the core functionalies done > > for this turn. I'd like to add the irq stuff with a separate patch later. > > It should be a trivial function - it just does a mapping from a GPIO > number to an IRQ number. right, to_irq is simple. However, there're some more stuff necessary for gpio irq on this chip, since it has separate registers for GPIO interrupt control and status. A further gpio chip might be needed needed to get the stuff done. Hence I'd like to push out the most importatn core funcationalities out for the first turn before I take a deeper look into other stuffs. thanks cheers Luotao Fu -- Pengutronix e.K. | Dipl.-Ing. Luotao Fu | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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