linux-kernel - Re: [PATCH 03/20] staging: comedi: drivers: rename PLX PCI 9080 register offsets

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Message-ID: <573F3BB2.6020601@mev.co.uk>
Date:	Fri, 20 May 2016 17:30:42 +0100
From:	Ian Abbott <abbotti@....co.uk>
To:	Hartley Sweeten <HartleyS@...ionengravers.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 03/20] staging: comedi: drivers: rename PLX PCI 9080
 register offsets

On 20/05/16 17:21, Hartley Sweeten wrote:
> On Friday, May 20, 2016 6:49 AM, Ian Abbott wrote:
>> Rename the macros in "plx9080.h" that define the offsets of registers,
>> following the pattern `PLX_REG_<NAME>`, where `<NAME>` is the register
>> name from the PLX PCI 9080 Data Book.
>>
>> Add defines for the "Mailbox" registers, and add parameterized macros
>> for the mailbox registers and the DMA control registers.  Make use of
>> the parameterized versions of the macros where it seems appropriate.
>>
>> The registers for supporting the I2O (Intelligent Input/Output) feature
>> are largely left undefined, just defining enough to allow the I2O
>> feature to be disabled.
>>
>> Signed-off-by: Ian Abbott <abbotti@....co.uk>
>
> Ian,
>
> Just an comment on your renaming.
>
> You also renamed the registers in the daqbook2000 driver in the
> <driver>_REG_<name> format. Personally I prefer the format to be
> <driver>_<name>_REG. That way a grep for <driver>_<name> will
> return both the register and bit uses.
>
> Currently the <driver>_REG_<name> form is not as common in comedi.
> Looks like it's only used in amcc_35933.h and will be in daqboard2000.c.
>
> The <driver>_<name>_REG form is used a lot.
>
> Not a big deal, just a comment.

It makes it easier to distinguish the register offsets from the register 
values, imho.

-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@....co.uk> )=-
-=(                          Web: http://www.mev.co.uk/  )=-