linux-kernel - Re: [RFC 2.6.27 1/1] gpiolib: add support for batch set of pins

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Date:	Sat, 29 Nov 2008 19:27:24 -0800
From:	David Brownell <david-b@...bell.net>
To:	"Jaya Kumar" <jayakumar.lkml@...il.com>
Cc:	"Paulius Zaleckas" <paulius.zaleckas@...tonika.lt>,
	"Sam Ravnborg" <sam@...nborg.org>,
	"Eric Miao" <eric.miao@...vell.com>,
	"Haavard Skinnemoen" <hskinnemoen@...el.com>,
	"Philipp Zabel" <philipp.zabel@...il.com>,
	"Russell King" <rmk@....linux.org.uk>,
	"Ben Gardner" <bgardner@...tec.com>, "Greg KH" <greg@...ah.com>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-fbdev-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC 2.6.27 1/1] gpiolib: add support for batch set of pins

On Saturday 29 November 2008, Jaya Kumar wrote:
> 	 Given that _bus() isn't appropriate anymore, how does
> "gpio_set_values" and .sets sound and correspondingly gpio_get_values
> and .gets?

Confusingly similar to the single value version:  a single letter.
Far better to use "bitmask" or something similar ...

... also, better to split out discussions of gpio_chip methods
(NOT used by all implementors of the GPIO interfaces) from the
discussion of those interfaces (implemented uniformly on all
platforms that support any of the calls).

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