From: jamie@jamieiles.com (Jamie Iles)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv2 2.6.40 2/3] ARM:simpad: Cleanup CS3 accessors.
Date: Mon, 18 Apr 2011 14:47:12 +0100 [thread overview]
Message-ID: <20110418134712.GD2820@pulham.picochip.com> (raw)
In-Reply-To: <1303131636-19442-3-git-send-email-jochen@scram.de>
Hi Jochen,
On Mon, Apr 18, 2011 at 03:00:35PM +0200, Jochen Friedrich wrote:
> - prepend CS3 accessors by simpad_ to indicate they
> are specific to simpad devices.
> - use spinlock to protect shadow register.
> - implement 8 read-only pins.
> - use readl/writel macros so barriers are used where
> necessary.
> - register CS3 as GPIO controller with 24 pins
> (16 output only and 8 input only).
I think the basic-mmio-gpio driver (drivers/gpio/basic_mmio_gpio.c)
should cover the GPIO controller portion of this (including the
shadowing etc). This may need a few other bits (simpad_uart_pm(),
simpad_map_io() etc) converting over to use the GPIO API though.
Jamie
next prev parent reply other threads:[~2011-04-18 13:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-18 13:00 [PATCHv2 2.6.40 0/3] ARM: simpad: Add support for GPIO attached hardware Jochen Friedrich
2011-04-18 13:00 ` [PATCHv2 2.6.40 1/3] ARM:simpad: Add ucb1x00 GPIO definitions and register GPIO Jochen Friedrich
2011-04-18 13:00 ` [PATCHv2 2.6.40 2/3] ARM:simpad: Cleanup CS3 accessors Jochen Friedrich
2011-04-18 13:47 ` Jamie Iles [this message]
2011-04-18 14:35 ` Jochen Friedrich
2011-04-18 14:46 ` Henning Heinold
2011-04-18 16:49 ` Jamie Iles
2011-04-18 18:02 ` Jochen Friedrich
2011-04-19 9:09 ` Jamie Iles
2011-04-18 13:00 ` [PATCHv2 2.6.40 3/3] ARM:simpad: add GPIO based device definitions Jochen Friedrich
2011-04-19 13:52 ` Dmitry Artamonow
2011-04-19 14:46 ` Jochen Friedrich
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