[PATCH v7 1/3] MTD : add the common code for GPMI-NFC controller driver
w.sang at pengutronix.de
Thu Jun 30 00:46:55 EDT 2011
> > > I would suggest leave this gpmi specific quirk to gpmi driver to sort
> > > out. With the following mxs-dma change, it should work if gpmi driver
> > > can pass the valid gpmi irq number for only one gpmi channel, and -1
> > > for all others.
> > ...which brings us right into the 'NO_IRQ is 0' discussion :)
> Though I do not know what it means exactly, number 0 is an valid IRQ
> on both mx23 and mx28 (see mx23.h and mx28.h).
It could be remapped. It is a looong story. Start here if you are interested:
Currently, it's a can of worms. Hopefully, irq_desc might help somewhen.
> > Other than that, [thinking loud] this will help if all irq-sharing
> > channels are handled by the same driver. If not, we would just add
> > IRQF_SHARED (hopefully this will never be needed). Yup, sounds
> > reasonable to me. Will give it a second thought later, though.
> GPMI is the only mxs-dma user that gets irq-sharing. So yes, all
> irq-sharing channels are handled by the same driver, gpmi-nfc :)
Currently, yes. But we have to make it future-proof.
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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