RE: [PATCHv4 3/3] gpio: sch: Enable IRQ support for Quark X1000
From: Chang, Rebecca Swee Fun
Date: Tue Dec 02 2014 - 21:26:38 EST
Noted, while I continue to work on this IRQ feature, can I resend patch 1 and patch 2 (rebase to devel branch) in v5 thread so that you can pull them in first?
> -----Original Message-----
> From: Linus Walleij [mailto:linus.walleij@xxxxxxxxxx]
> Sent: 28 November, 2014 10:03 PM
> To: Chang, Rebecca Swee Fun
> Cc: Linux Kernel Mailing List; GPIO Subsystem Mailing List; Westerberg, Mika;
> Denis Turischev; Alexandre Courbot
> Subject: Re: [PATCHv4 3/3] gpio: sch: Enable IRQ support for Quark X1000
> On Wed, Nov 26, 2014 at 5:48 AM, Chang Rebecca Swee Fun
> <rebecca.swee.fun.chang@xxxxxxxxx> wrote:
> > ntel Quark X1000 GPIO controller supports interrupt handling for both
> > core power well and resume power well. This patch is to enable the IRQ
> > support and provide IRQ handling for Intel Quark X1000 GPIO-SCH device
> > driver.
> > This piece of work is derived from Dan O'Donovan's initial work for
> > Quark X1000 enabling.
> > Signed-off-by: Chang Rebecca Swee Fun
> > <rebecca.swee.fun.chang@xxxxxxxxx>
> This is just adding handling of cascading interrupts from a GPIO chip as far as I
> can tell. We don't do that with local per-driver hacks anymore if there is no
> special reason, we have helpers on gpiolib to handle this.
> Make your Kconfig select GPIOLIB_IRQCHIP and take it from there, look at how
> other drivers using GPIOLIB_IRQCHIP are done. Read the documentation for
> chained irqchips in Documentation/gpio/driver.txt
> Linus Walleij