On Thursday 19 April 2007 1:05 am, Francis Moreau wrote:
> On 4/17/07, David Brownell <[EMAIL PROTECTED]> wrote:
With regards to a userspace interface to GPIOs (rather than to
devices such as leds or switches they control):
> > In this case I'm not entirely sure how it'd work. I've seen a few
On 4/17/07, David Brownell <[EMAIL PROTECTED]> wrote:
In this case I'm not entirely sure how it'd work. I've seen a few
drivers which let userspace peek and poke at GPIO signals -- like
one for Gumstix boards -- but generalizing the model isn't simple.
Sub-problems include:
- Configuring the
On 4/17/07, David Brownell [EMAIL PROTECTED] wrote:
In this case I'm not entirely sure how it'd work. I've seen a few
drivers which let userspace peek and poke at GPIO signals -- like
one for Gumstix boards -- but generalizing the model isn't simple.
Sub-problems include:
- Configuring the
On Thursday 19 April 2007 1:05 am, Francis Moreau wrote:
On 4/17/07, David Brownell [EMAIL PROTECTED] wrote:
With regards to a userspace interface to GPIOs (rather than to
devices such as leds or switches they control):
In this case I'm not entirely sure how it'd work. I've seen a few
On Tuesday 17 April 2007 12:04 am, Francis Moreau wrote:
> BTW, are there any plan to make gpio usable from userspace ? I don't
> know if it makes sense but I saw some patches on LKML that did that.
Only the usual plan: someone who wants that feature provides a driver,
which can be merged after
On 4/16/07, David Brownell <[EMAIL PROTECTED]> wrote:
No, all of those need to be done. (Plus maybe a few more things,
I wasn't trying to be exhaustive.) That last point is what makes
the other ones take effect ... without it, the top level IRQ will
never get dispatched to the GPIO-specific
On 4/16/07, David Brownell [EMAIL PROTECTED] wrote:
No, all of those need to be done. (Plus maybe a few more things,
I wasn't trying to be exhaustive.) That last point is what makes
the other ones take effect ... without it, the top level IRQ will
never get dispatched to the GPIO-specific IRQ.
On Tuesday 17 April 2007 12:04 am, Francis Moreau wrote:
BTW, are there any plan to make gpio usable from userspace ? I don't
know if it makes sense but I saw some patches on LKML that did that.
Only the usual plan: someone who wants that feature provides a driver,
which can be merged after
On Monday 16 April 2007 3:03 am, Francis Moreau wrote:
> > Good .. this is more like an IRQ question though.
>
> ...
>
> > IRQ logic on that platform must do a few things, like:
> >
> > - NR_IRQS includes the N interrupts triggered from that chip,
> >and their numbers probably fit right
Hi David,
Thanks for your detailed answer, it helps a lot !
On 4/14/07, David Brownell <[EMAIL PROTECTED]> wrote:
On Friday 13 April 2007 1:51 pm, Francis Moreau wrote:
> Hi,
>
> I'm trying to port my old gpio code to the generic one to see if it
> can fit my needs.
Good .. this is more like
Hi David,
Thanks for your detailed answer, it helps a lot !
On 4/14/07, David Brownell [EMAIL PROTECTED] wrote:
On Friday 13 April 2007 1:51 pm, Francis Moreau wrote:
Hi,
I'm trying to port my old gpio code to the generic one to see if it
can fit my needs.
Good .. this is more like an IRQ
On Monday 16 April 2007 3:03 am, Francis Moreau wrote:
Good .. this is more like an IRQ question though.
...
IRQ logic on that platform must do a few things, like:
- NR_IRQS includes the N interrupts triggered from that chip,
and their numbers probably fit right sometime after
On Friday 13 April 2007 1:51 pm, Francis Moreau wrote:
> Hi,
>
> I'm trying to port my old gpio code to the generic one to see if it
> can fit my needs.
Good .. this is more like an IRQ question though.
> The gpio controller is a home made one and has a really weird
> interface. It has several
Hi,
I'm trying to port my old gpio code to the generic one to see if it
can fit my needs.
The gpio controller is a home made one and has a really weird
interface. It has several registers to read the gpio status, to
configure gpio directions, or to configure if a gpio can trigger an
interrupt
Hi,
I'm trying to port my old gpio code to the generic one to see if it
can fit my needs.
The gpio controller is a home made one and has a really weird
interface. It has several registers to read the gpio status, to
configure gpio directions, or to configure if a gpio can trigger an
interrupt
On Friday 13 April 2007 1:51 pm, Francis Moreau wrote:
Hi,
I'm trying to port my old gpio code to the generic one to see if it
can fit my needs.
Good .. this is more like an IRQ question though.
The gpio controller is a home made one and has a really weird
interface. It has several
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