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From: Dave Gerlach <d-gerlach@ti.com>
To: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>,
	<linux-arch@vger.kernel.org>, <devicetree@vger.kernel.org>
Cc: Russ Dill <russ.dill@ti.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Shawn Guo <shawn.guo@freescale.com>,
	Tony Lindgren <tony@atomide.com>, <Anson.Huang@freescale.com>,
	Dave Gerlach <d-gerlach@ti.com>
Subject: [RFC PATCH 0/2] Add ioremap_exec enhancements
Date: Wed, 26 Nov 2014 15:13:59 -0600	[thread overview]
Message-ID: <cover.1417029918.git.d-gerlach@ti.com> (raw)

Hi,

Some platforms need the ability to ioremap memory for use with small
chunks of code, like in certain PM applications that run from sram.

This series provides a common way to call an arch's ioremap_exec, which
currently only exists for ARM, so that we can use it in the generic
sram driver in a forthcoming patch.

This patch is part of a patch series split into several smaller sets
for introducing suspend on AM335x. I plan to use it to copy several
pieces of ASM code from an EMIF driver and the SoC PM code to run from
SRAM on the SoC. I have pushed a branch here [1] based on v3.18-rc6
with all required patches so that the higher level plan for these
patches can be seen.

Regards,
Dave

[1] https://github.com/dgerlach/linux-pm/tree/rfc-pm-am335x-v3.18-rc6

Russ Dill (2):
  asm-generic: io: Add exec versions of ioremap
  lib: devres: Add exec versions of devm_ioremap_resource and friends

 arch/arm/include/asm/io.h   |   2 +
 include/asm-generic/iomap.h |   5 ++
 include/linux/device.h      |  19 ++++++-
 include/linux/io.h          |   9 +++-
 lib/devres.c                | 125 ++++++++++++++++++++++++++++++++++++++++++--
 5 files changed, 154 insertions(+), 6 deletions(-)

-- 
2.1.0


             reply	other threads:[~2014-11-26 21:15 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-26 21:13 Dave Gerlach [this message]
2014-11-26 21:14 ` [RFC PATCH 1/2] asm-generic: io: Add exec versions of ioremap Dave Gerlach
2014-11-26 21:32   ` Arnd Bergmann
2014-11-26 21:14 ` [RFC PATCH 2/2] lib: devres: Add exec versions of devm_ioremap_resource and friends Dave Gerlach
2014-11-27  9:41   ` Geert Uytterhoeven

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