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Message-ID: <alpine.LFD.2.02.1305291019450.2995@ionos>
Date: Wed, 29 May 2013 10:23:18 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Grant Likely <grant.likely@...aro.org>
cc: LKML <linux-kernel@...r.kernel.org>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Rob Herring <rob.herring@...xeda.com>,
Rob Landley <rob@...dley.net>, Arnd Bergmann <arnd@...db.de>,
Jason Cooper <jason@...edaemon.net>,
Andrew Lunn <andrew@...n.ch>,
Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Gregory Clement <gregory.clement@...e-electrons.com>,
Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
Jean-Francois Moine <moinejf@...e.fr>,
Gerlando Falauto <gerlando.falauto@...mile.com>,
devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [patch 7/8] genirq: generic chip: Add linear irq domain
support
On Wed, 29 May 2013, Grant Likely wrote:
> > --- linux-2.6.orig/include/linux/irq.h
> > +++ linux-2.6/include/linux/irq.h
> > @@ -678,6 +678,8 @@ struct irq_chip_type {
> > * @wake_active: Interrupt is marked as an wakeup from suspend source
> > * @num_ct: Number of available irq_chip_type instances (usually 1)
> > * @private: Private data for non generic chip callbacks
> > + * @installed: bitfield to denote installed interrupts
> > + * @domain: irq domain pointer
> > * @list: List head for keeping track of instances
> > * @chip_types: Array of interrupt irq_chip_types
> > *
> > @@ -699,6 +701,8 @@ struct irq_chip_generic {
> > u32 wake_active;
> > unsigned int num_ct;
> > void *private;
> > + unsigned long installed;
>
> This is probably something that the irqdomain should be keeping track of
> internally, but that's an issue for a separate patch series.
Ok. I just need access to that information, so I can figure out if
it's the first irq of the chip which gets mapped. I need this for
initializing the mask cache.
> [...]
> > +struct irq_domain_ops irq_generic_chip_ops = {
> > + .map = irq_map_generic_chip,
> > + .xlate = irq_domain_xlate_onecell,
>
> As discussed on IRC, should use onetwocell here for greater
> compatibility with existing bindings.
Changed that.
Thanks,
tglx
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