On 09/27/2013 01:18 AM, Stephen Warren wrote: > On 09/24/2013 01:58 AM, Javier Martinez Canillas wrote: >> The OMAP GPIO controller HW requires a pin to be configured in GPIO >> input mode in order to operate as an interrupt input. Since drivers >> should not be aware of whether an interrupt pin is also a GPIO or not, >> the HW should be fully configured/enabled as an IRQ if a driver solely >> uses IRQ APIs such as request_irq(), and never calls any GPIO-related >> APIs. As such, add the missing HW setup to the OMAP GPIO controller's >> irq_chip driver. >> >> Since this bypasses the GPIO subsystem we have to ensure that another >> caller won't be able to request the same GPIO pin that is used as an >> IRQ and set its direction as output. Requesting the GPIO and setting >> its direction as input is allowed though. > > FWIW, the concept of this patch, > Acked-by: Stephen Warren <swarren@xxxxxxxxxx> > > I didn't review the code; just skimmed it to see where the new > functionality was implemented. > Thanks Stephen, I split the changes as suggested by Tony and posted as a patch-set and not an RFC anymore: [PATCH 1/2] gpio/omap: maintain GPIO and IRQ usage separately [1] [PATCH 2/2] gpio/omap: auto-setup a GPIO when used as an IRQ [2] Linus, Could you please add Stephen Acked-by when taking the patches and also George Cherian Tested-by that sent for this RFC. George it would be great if you can also comment on which OMAP platform you had tested. I cc'ed Aaro Koskinen and Paul Walmsley now which seems to have OMAP1 platforms to test. Could you please test [1] and [2] on a OMAP1 board? These patches solves a long standing issue we have on OMAP2+ when booting with DT and it would be great if you can check that it does not cause regressions on OMAP1 based boards. Thanks a lot and best regards, Javier [1]: https://patchwork.kernel.org/patch/2937351/ [2]: https://patchwork.kernel.org/patch/2937371/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
