From: Peter Korsgaard <jacmet@sunsite.dk>
To: grant.likely@secretlab.ca
Cc: dbrownell@users.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv2] mcp23s08: support mcp23s17 variant
Date: Fri, 25 Feb 2011 13:27:47 +0100 [thread overview]
Message-ID: <87bp20qoxo.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <1297773895-12640-1-git-send-email-jacmet@sunsite.dk> (Peter Korsgaard's message of "Tue, 15 Feb 2011 13:44:55 +0100")
>>>>> "Peter" == Peter Korsgaard <jacmet@sunsite.dk> writes:
Peter> mpc23s17 is very similar to the mcp23s08, except that registers
Peter> are 16bit wide, so extend the interface to work with both
Peter> variants.
Peter> The s17 variant also has an additional address pin, so adjust
Peter> platform data structure to support up to 8 devices per SPI
Peter> chipselect.
Peter> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Peter> ---
Peter> Changes since v1:
Peter> - Add mcp23s08_ops callbacks for 8 and 16 bit instead of handling both
Peter> in the same accessor function as requested by Grant.
Peter> - Don't use a temporary buffer for 8bit version of read_regs -
Peter> Stack addresses are not DMA safe.
Ping? Any comments?
--
Bye, Peter Korsgaard
prev parent reply other threads:[~2011-02-25 12:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-15 12:44 Peter Korsgaard
2011-02-25 12:27 ` Peter Korsgaard [this message]
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