Message-
> From: [EMAIL PROTECTED]
[mailto:linuxppc-dev-
> [EMAIL PROTECTED] On Behalf Of Jon
Smirl
> Sent: Wednesday, September 17, 2008 7:09 AM
> To: [EMAIL PROTECTED]
> Cc: Scott Wood; linuxppc-dev; Roland Dreier
> Subject: Re: demuxing irqs
>
> Both solutions can be implem
Both solutions can be implemented. This is really a question of style.
Since this impacts all of the PowerPC implementations we should get
feedback from more people I'll go along with whatever the group
wants.
The basic question is: Should GPIOs and VIRQs each have their own
namespace, or should
On Tue, Sep 16, 2008 at 06:08:34PM -0400, Jon Smirl wrote:
[...]
> >> >> > Assume that GPIO 8 does not translate to any IRQ, but IRQ 8 is still
> >> >> > valid virq b/c it is mapped for another IRQ controller (particularly
> >> >> > lots of kernel code assumes that IRQ 8 is 8259 PIC's CMOS interrup
On Tue, Sep 16, 2008 at 7:24 PM, Scott Wood <[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 06:08:34PM -0400, Jon Smirl wrote:
>> You have to map between GPIO and IRQ inside the interrupt handlers so
>> it has to be reasonably fast. This gets done on every shared interrupt
>> so you will end u
On Tue, Sep 16, 2008 at 06:08:34PM -0400, Jon Smirl wrote:
> You have to map between GPIO and IRQ inside the interrupt handlers so
> it has to be reasonably fast. This gets done on every shared interrupt
> so you will end up building mapping tables. Also, gpio_to_irq()
> doesn't take the gpio chip
On Tue, Sep 16, 2008 at 5:42 PM, Anton Vorontsov
<[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 02:32:45PM -0400, Jon Smirl wrote:
>> On Tue, Sep 16, 2008 at 1:49 PM, Scott Wood <[EMAIL PROTECTED]> wrote:
>> > On Tue, Sep 16, 2008 at 10:24:35AM -0400, Jon Smirl wrote:
>> >> On Tue, Sep 16, 20
On Tue, Sep 16, 2008 at 02:32:45PM -0400, Jon Smirl wrote:
> On Tue, Sep 16, 2008 at 1:49 PM, Scott Wood <[EMAIL PROTECTED]> wrote:
> > On Tue, Sep 16, 2008 at 10:24:35AM -0400, Jon Smirl wrote:
> >> On Tue, Sep 16, 2008 at 10:14 AM, Anton Vorontsov
> >> <[EMAIL PROTECTED]> wrote:
> >> > Assume tha
On Tue, Sep 16, 2008 at 1:49 PM, Scott Wood <[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 10:24:35AM -0400, Jon Smirl wrote:
>> On Tue, Sep 16, 2008 at 10:14 AM, Anton Vorontsov
>> <[EMAIL PROTECTED]> wrote:
>> > Assume that GPIO 8 does not translate to any IRQ, but IRQ 8 is still
>> > valid
On Tue, Sep 16, 2008 at 10:24:35AM -0400, Jon Smirl wrote:
> On Tue, Sep 16, 2008 at 10:14 AM, Anton Vorontsov
> <[EMAIL PROTECTED]> wrote:
> > Assume that GPIO 8 does not translate to any IRQ, but IRQ 8 is still
> > valid virq b/c it is mapped for another IRQ controller (particularly
> > lots of k
On Tue, Sep 16, 2008 at 10:14 AM, Anton Vorontsov
<[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 09:36:22AM -0400, Jon Smirl wrote:
> [...]
>> >> >> -/*
>> >> >> - * Not implemented, yet.
>> >> >> - */
>> >> >> -static inline int gpio_to_irq(unsigned int gpio)
>> >> >> +static inline unsigned
On Tue, Sep 16, 2008 at 10:14 AM, Anton Vorontsov
<[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 09:36:22AM -0400, Jon Smirl wrote:
> [...]
>> >> >> -/*
>> >> >> - * Not implemented, yet.
>> >> >> - */
>> >> >> -static inline int gpio_to_irq(unsigned int gpio)
>> >> >> +static inline unsigned
On Tue, Sep 16, 2008 at 09:36:22AM -0400, Jon Smirl wrote:
[...]
> >> >> -/*
> >> >> - * Not implemented, yet.
> >> >> - */
> >> >> -static inline int gpio_to_irq(unsigned int gpio)
> >> >> +static inline unsigned int gpio_to_irq(unsigned int gpio)
> >> >> {
> >> >> - return -ENOSYS;
> >> >>
On Tue, Sep 16, 2008 at 9:12 AM, Anton Vorontsov
<[EMAIL PROTECTED]> wrote:
> On Tue, Sep 16, 2008 at 08:37:55AM -0400, Jon Smirl wrote:
>> 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
On Tue, Sep 16, 2008 at 08:37:55AM -0400, Jon Smirl wrote:
> 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
> >> m
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
>> d
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 n
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//-->
demuxing irqs
Jon Smirl
Re: demuxing irqs
Roland Dreier
Re: demuxing irqs
Jon Smirl
Re: demuxing irqs
Roland Dreier
Re: demuxing irqs
Jon Smirl
Re: demuxing irqs
Jon Smirl
Re: dem
How do the virq numbers get assigned?
What do I pass into request_irq when I use one of these pins?
The gpio device...
gpio_wkup: [EMAIL PROTECTED] {
compatible =
"fsl,mpc5200b-gpio-wkup","fsl,mpc5200-gpio-wkup";
reg = <0xc00 0x40>;
> The muxed interrupts are inside a SOC CPU. For example eight GPIOs
> can each individually be enabled to trigger hardware interrupt 7. When
> I get hw interrupt 7 i want to demux it into 8 virtual interrupts.
> There are eight bit registers for individually acking, enabling, etc
> each of t
On Sat, Sep 13, 2008 at 6:41 PM, Roland Dreier <[EMAIL PROTECTED]> wrote:
> > Can someone point me at a simple example of how to demux irqs using
> > the powerpc irq functions? I have eight devices on a single irq and I
> > want to turn them into virtual irqs.
>
> Sorry about the previous reply.
> Can someone point me at a simple example of how to demux irqs using
> the powerpc irq functions? I have eight devices on a single irq and I
> want to turn them into virtual irqs.
Sorry about the previous reply.
Anyway, what are you going to demux based on? Do you have some other
signal you
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