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From: Grant Likely <grant.likely@secretlab.ca>
To: Rob Herring <robherring2@gmail.com>
Cc: sfr@canb.auug.org.au, Russell King <linux@arm.linux.org.uk>,
	linux-kernel@vger.kernel.org,
	Thomas Gleixner <tglx@linutronix.de>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFC 13/14] irq_domain: Remove 'new' irq_domain in favour of the ppc one
Date: Wed, 11 Jan 2012 14:27:00 -0700	[thread overview]
Message-ID: <CACxGe6vVSO0cTgPurr6jFoo9QF_W02UaABOFYadCTQGU9dcwmg@mail.gmail.com> (raw)
In-Reply-To: <4F0DFC0F.2090005@gmail.com>

On Wed, Jan 11, 2012 at 2:15 PM, Rob Herring <robherring2@gmail.com> wrote:
> Grant,
>
> On 01/11/2012 02:22 PM, Grant Likely wrote:
>> This patch removes the simplistic implementation of irq_domains and enab=
les
>> the powerpc infrastructure for all irq_domain users. =A0The powerpc
>> infrastructure includes support for complex mappings between Linux and
>> hardware irq numbers, and can manage allocation of irq_descs.
>>
>> This patch also converts the few users of irq_domain_add()/irq_domain_de=
l()
>> to call irq_domain_add_legacy() instead.
>
> So what is the non-legacy way? Legacy implies we don't want to do it
> that way. I guess until we remove all non-DT platforms with GIC we are
> stuck with legacy. That seems like it could be a ways out until we get
> there.

Non-legacy is letting the irq_domain manage the irq_desc allocations.
Some of the controllers will be easy to convert, some will be more
difficult.  The primary thing that really blocks getting away from the
legacy method is anything that expects hardcoded #defined irq numbers.
 The goal is to convert all users over to the linear revmap method.

g.

  reply	other threads:[~2012-01-11 21:27 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-11 20:22 [RFC 0/14] Finish up irq_domain generalization Grant Likely
2012-01-11 20:22 ` [RFC 01/14] dt: Make irqdomain less verbose Grant Likely
2012-01-11 20:22 ` [RFC 02/14] irq_domain: Make irq_domain structure match powerpc's irq_host Grant Likely
2012-01-11 20:22 ` [RFC 03/14] irq_domain: convert microblaze from irq_host to irq_domain Grant Likely
2012-01-11 20:22 ` [RFC 04/14] irq_domain/powerpc: Use common irq_domain structure instead of irq_host Grant Likely
2012-01-11 20:22 ` [RFC 05/14] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead Grant Likely
2012-01-11 20:22 ` [RFC 06/14] irq_domain/powerpc: Eliminate virq_is_host() Grant Likely
     [not found]   ` <keep-irq-is-domain@mdm.bga.com>
2012-01-18  0:38     ` Grant Likely
2012-01-11 20:22 ` [RFC 07/14] irq_domain: Move irq_domain code from powerpc to kernel/irq Grant Likely
2012-01-11 20:22 ` [RFC 08/14] irqdomain: remove NO_IRQ from irq domain code Grant Likely
2012-01-11 20:22 ` [RFC 09/14] irq_domain: Remove references to old irq_host names Grant Likely
2012-01-11 20:22 ` [RFC 10/14] irq_domain: Replace irq_alloc_host() with revmap-specific initializers Grant Likely
2012-01-11 20:22 ` [RFC 11/14] powerpc: Eliminate NO_IRQ usage Grant Likely
2013-07-25 21:58   ` Geert Uytterhoeven
2013-07-26  3:56     ` Grant Likely
2013-08-23 13:18       ` Geert Uytterhoeven
2013-08-23 13:22         ` Geert Uytterhoeven
2012-01-11 20:22 ` [RFC 12/14] irq_domain: Add support for base irq and hwirq in legacy mappings Grant Likely
2012-01-13  0:37   ` Rob Herring
2012-01-13  0:53     ` Grant Likely
2012-01-11 20:22 ` [RFC 13/14] irq_domain: Remove 'new' irq_domain in favour of the ppc one Grant Likely
2012-01-11 21:15   ` Rob Herring
2012-01-11 21:27     ` Grant Likely [this message]
2012-01-13  0:31       ` Rob Herring
2012-01-13  0:47         ` Grant Likely
2012-01-13  0:53           ` Rob Herring
2012-01-13  2:20         ` Grant Likely
2012-01-17  2:43         ` Michael Bohan
2012-01-17  3:42           ` Benjamin Herrenschmidt
2012-01-18  0:28             ` Grant Likely
2012-01-18  2:16               ` Benjamin Herrenschmidt
2012-01-18  6:50                 ` Grant Likely
2012-01-11 20:22 ` [RFC 14/14] irq_domain: Remove irq_domain_add_simple() Grant Likely
2012-01-11 21:39 ` [RFC 0/14] Finish up irq_domain generalization Randy Dunlap
2012-01-11 20:50   ` Grant Likely
2012-01-11 21:23     ` Grant Likely
2012-01-11 22:48       ` Randy Dunlap

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