From: Arnd Bergmann <arnd@arndb.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <rmk@arm.linux.org.uk>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
sameo@linux.intel.com, rpurdie@rpsys.net, bryan.wu@canonical.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM
Date: Tue, 7 Aug 2012 20:51:25 +0000 [thread overview]
Message-ID: <201208072051.25681.arnd@arndb.de> (raw)
In-Reply-To: <CAMuHMdUezhMNL19JUK9-uSqTr3=bU7yAci0ovFd5dSdksW1etQ@mail.gmail.com>
On Tuesday 07 August 2012, Geert Uytterhoeven wrote:
>Don't you need an extra file in /proc, too (cfr. /proc/ioports and /proc/iomem)?
>
> And as Arnd pointed out, if resources will be used for various new buses,
> "IORESOURCE_FOO" or "IORESOURCE_OTHER" is a bit vague.
> What about conflicts where one driver means i2c addresses and another
> one means gpio addresses? The resource system will reject them?
The platform code currently only inserts the resources of type IO or
MEM. For the new type, we would not insert them to any resource
tree and they consequently are not available in any /proc file.
No driver should ever try to request access to those resources either.
The only thing we do with them is attach them to a platform device
in the mfd driver and take them out of it again in the child driver.
Arnd
next prev parent reply other threads:[~2012-08-07 20:51 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-05 16:32 [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM Haojian Zhuang
2012-08-05 16:32 ` [PATCH 1/5] mfd: use IORESOURCE_MEM in 88pm860x backlight Haojian Zhuang
2012-08-05 16:32 ` [PATCH 2/5] mfd: use IORESOUCE_MEM in 88pm860x leds driver Haojian Zhuang
2012-08-05 16:32 ` [PATCH 3/5] mfd: use IORESOURCE_MEM in 88pm860x regulator Haojian Zhuang
2012-08-05 16:32 ` [PATCH 4/5] mfd: avoid to return failure in 88pm860x Haojian Zhuang
2012-08-05 16:32 ` [PATCH 5/5] ARM: mmp: enable 88pm860x in ttc dkb Haojian Zhuang
2012-08-06 14:30 ` [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM Mark Brown
2012-08-06 14:42 ` Haojian Zhuang
2012-08-06 15:46 ` Mark Brown
2012-08-06 15:56 ` Haojian Zhuang
2012-08-06 15:58 ` Mark Brown
2012-08-06 19:22 ` Russell King
2012-08-06 19:53 ` Mark Brown
2012-08-06 21:31 ` Russell King
2012-08-06 22:00 ` Mark Brown
2012-08-07 1:47 ` Haojian Zhuang
2012-08-07 7:58 ` Russell King
2012-08-07 8:24 ` Benjamin Herrenschmidt
2012-08-07 10:38 ` Mark Brown
2012-08-07 11:13 ` Russell King
2012-08-07 11:28 ` Mark Brown
2012-08-07 11:31 ` Russell King
2012-08-07 11:36 ` Russell King
2012-08-07 11:45 ` Mark Brown
2012-08-07 11:51 ` Russell King
2012-08-07 12:58 ` Mark Brown
2012-08-07 13:47 ` Russell King
2012-08-07 15:54 ` Mark Brown
2012-08-07 15:22 ` Geert Uytterhoeven
2012-08-07 15:44 ` Russell King
2012-08-07 16:48 ` Mark Brown
2012-08-07 20:51 ` Arnd Bergmann [this message]
2012-08-07 11:38 ` Mark Brown
2012-08-07 11:44 ` Russell King
2012-08-07 12:11 ` Russell King
2012-08-07 13:25 ` Mark Brown
2012-08-07 14:28 ` Arnd Bergmann
2012-08-07 14:41 ` Russell King
2012-08-07 16:36 ` Mark Brown
2012-08-07 8:22 ` Benjamin Herrenschmidt
2012-08-07 8:28 ` Russell King
2012-08-07 11:28 ` Arnd Bergmann
2012-08-07 11:32 ` Russell King
2012-08-07 11:34 ` Arnd Bergmann
2012-08-07 11:35 ` Mark Brown
2012-08-07 11:41 ` Russell King
2012-08-07 15:45 ` Alan Cox
2012-08-07 15:50 ` Russell King
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