On Tue, Sep 16, 2008 at 8:17 AM, Anton Vorontsov <[EMAIL PROTECTED]> wrote: > Hi Jon, > > On Sun, Sep 14, 2008 at 11:06:23PM -0400, Jon Smirl wrote: >> I have demultiplexing the GPIO interrupts working well enough to make >> my hardware work. But now I've discovered that these interrupts can't >> do what I need. >> >> Anton, Grant - are either of you interested in this code? It's not >> finished but the main ideas are in place. > > I think there is a small issue that ruins the whole approach.. :-/ > >> --- a/arch/powerpc/include/asm/gpio.h >> +++ b/arch/powerpc/include/asm/gpio.h >> @@ -38,17 +38,14 @@ static inline int gpio_cansleep(unsigned int gpio) >> return __gpio_cansleep(gpio); >> } >> >> -/* >> - * Not implemented, yet. >> - */ >> -static inline int gpio_to_irq(unsigned int gpio) >> +static inline unsigned int gpio_to_irq(unsigned int gpio) >> { >> - return -ENOSYS; >> + return gpio; > > "GPIO 0" is valid gpio, but "IRQ 0" isn't valid virq. So you > can't do 1:1 mapping. :-(
I changed the GPIO numbers inside of Linux to match the virqs. ofchip->gc.base = IRQ_GPIO_WKUP(0); > > -- > Anton Vorontsov > email: [EMAIL PROTECTED] > irc://irc.freenode.net/bd2 > -- Jon Smirl [EMAIL PROTECTED] _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev