From: Mark Brown <broonie@kernel.org> To: Linus Walleij <linus.walleij@linaro.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>, Grant Likely <grant.likely@linaro.org>, Guennadi Liakhovetski <g.liakhovetski@gmx.de>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: Re: How to create IRQ mappings in a GPIO driver that doesn't control its IRQ domain ? Date: Thu, 25 Jul 2013 14:53:19 +0100 [thread overview] Message-ID: <20130725135319.GF9858@sirena.org.uk> (raw) In-Reply-To: <CACRpkdY-mdLbMY16aMqR9Jwu8qs9q4KNyxOxnwhXiGrAAxpKjg@mail.gmail.com> [-- Attachment #1: Type: text/plain, Size: 757 bytes --] On Thu, Jul 25, 2013 at 03:21:35PM +0200, Linus Walleij wrote: > On Thu, Jul 25, 2013 at 3:15 PM, Mark Brown <broonie@kernel.org> wrote: > > Are the interrupts in a contiguous block in the controller so you can > > just pass around the controller and a base number? > That works with platform data and in-kernel structures, but AFAICT > device tree has no such "bulk" concept but expects you to list > each and every line individually in cases like this. It works fine with domains as well - the domains all have a hwirq number which is local to the domain context and doesn't correspond to a Linux interrupt number. If you can say "the X interrupts in this domain starting at Y correspond to these X GPIOs" then you should be able to cope. Hopefully. [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 836 bytes --]
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From: broonie@kernel.org (Mark Brown) To: linux-arm-kernel@lists.infradead.org Subject: How to create IRQ mappings in a GPIO driver that doesn't control its IRQ domain ? Date: Thu, 25 Jul 2013 14:53:19 +0100 [thread overview] Message-ID: <20130725135319.GF9858@sirena.org.uk> (raw) In-Reply-To: <CACRpkdY-mdLbMY16aMqR9Jwu8qs9q4KNyxOxnwhXiGrAAxpKjg@mail.gmail.com> On Thu, Jul 25, 2013 at 03:21:35PM +0200, Linus Walleij wrote: > On Thu, Jul 25, 2013 at 3:15 PM, Mark Brown <broonie@kernel.org> wrote: > > Are the interrupts in a contiguous block in the controller so you can > > just pass around the controller and a base number? > That works with platform data and in-kernel structures, but AFAICT > device tree has no such "bulk" concept but expects you to list > each and every line individually in cases like this. It works fine with domains as well - the domains all have a hwirq number which is local to the domain context and doesn't correspond to a Linux interrupt number. If you can say "the X interrupts in this domain starting at Y correspond to these X GPIOs" then you should be able to cope. Hopefully. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20130725/4d30ee7c/attachment.sig>
next prev parent reply other threads:[~2013-07-25 13:53 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-07-23 23:21 How to create IRQ mappings in a GPIO driver that doesn't control its IRQ domain ? Laurent Pinchart 2013-07-23 23:21 ` Laurent Pinchart 2013-07-24 20:24 ` Grant Likely 2013-07-24 20:24 ` Grant Likely 2013-07-25 9:42 ` Laurent Pinchart 2013-07-25 9:42 ` Laurent Pinchart 2013-07-25 9:20 ` Linus Walleij 2013-07-25 9:20 ` Linus Walleij 2013-07-25 9:45 ` Laurent Pinchart 2013-07-25 9:45 ` Laurent Pinchart 2013-07-25 13:15 ` Mark Brown 2013-07-25 13:15 ` Mark Brown 2013-07-25 13:21 ` Linus Walleij 2013-07-25 13:21 ` Linus Walleij 2013-07-25 13:53 ` Mark Brown [this message] 2013-07-25 13:53 ` Mark Brown 2013-07-25 13:22 ` Laurent Pinchart 2013-07-25 13:22 ` Laurent Pinchart 2013-07-25 13:55 ` Mark Brown 2013-07-25 13:55 ` Mark Brown 2013-07-28 5:00 ` Grant Likely 2013-07-28 5:00 ` Grant Likely 2013-07-31 11:14 ` Laurent Pinchart 2013-07-31 11:14 ` Laurent Pinchart 2013-07-25 13:19 ` Linus Walleij 2013-07-25 13:19 ` Linus Walleij 2013-07-28 10:07 ` Tomasz Figa 2013-07-28 10:07 ` Tomasz Figa 2013-07-31 11:11 ` Laurent Pinchart 2013-07-31 11:11 ` Laurent Pinchart 2013-07-31 11:29 ` Tomasz Figa 2013-07-31 11:29 ` Tomasz Figa
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