linux-kernel - Re: [RFC PATCH 05/06] input/rmi4: F01

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Message-ID: <50B3EDBF.3030209@synaptics.com>
Date:	Mon, 26 Nov 2012 14:31:27 -0800
From:	Christopher Heiny <cheiny@...aptics.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Linus Walleij <linus.walleij@...ricsson.com>
CC:	Jean Delvare <khali@...ux-fr.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux Input <linux-input@...r.kernel.org>,
	Allie Xiong <axiong@...aptics.com>,
	Vivian Ly <vly@...aptics.com>,
	Daniel Rosenberg <daniel.rosenberg@...aptics.com>,
	Alexandra Chin <alexandra.chin@...synaptics.com>,
	Joerie de Gram <j.de.gram@...il.com>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Naveen Kumar Gaddipati <naveen.gaddipati@...ricsson.com>
Subject: Re: [RFC PATCH 05/06] input/rmi4: F01 - device control

On 11/26/2012 01:40 AM, Dmitry Torokhov wrote:
> Hi Christopher,
>
> On Fri, Nov 16, 2012 at 07:58:53PM -0800, Christopher Heiny wrote:
>> RMI Function 01 implements basic device control and power management
>> behaviors for the RMI4 sensor.
>>
>> rmi_f01.h exports definitions that we expect to be used by other functionality
>> in the future (such as firmware reflash).
>
> Please see my comments below.

Hi Dmitry,

Thanks for the feedback and the patch.  I've got just one question, 
included below, with a bunch of snipping).

				Chris

>
>>
>>
>> Signed-off-by: Christopher Heiny <cheiny@...aptics.com>
>>
>> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
>> Cc: Linus Walleij <linus.walleij@...ricsson.com>
>> Cc: Naveen Kumar Gaddipati <naveen.gaddipati@...ricsson.com>
>> Cc: Joeri de Gram <j.de.gram@...il.com>
>>
>>
>> ---
>>
>>   drivers/input/rmi4/rmi_f01.c | 1348 ++++++++++++++++++++++++++++++++++++++++++
>>   drivers/input/rmi4/rmi_f01.h |  160 +++++
>>   2 files changed, 1508 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
>> new file mode 100644
>> index 0000000..038266c
>> --- /dev/null
>> +++ b/drivers/input/rmi4/rmi_f01.c
>> @@ -0,0 +1,1348 @@
>> +/*
>> + * Copyright (c) 2011-2012 Synaptics Incorporated
>> + * Copyright (c) 2011 Unixphere
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.

[snip]

>> +/**
>> + * @reset - set this bit to force a firmware reset of the sensor.
>> + */
>> +struct f01_device_commands {
>> +	bool reset:1;
>> +	u8 reserved:7;
>
> When specifying bitwise fields please use u8, u16, etc only.

Um, OK.  Previously patch feedback suggested to use bool instead of u8 
for single bit fields (see here: 
http://www.spinics.net/lists/linux-input/msg22198.html).  So I'm a 
little confused.  It's no big deal to change it back, but I'd like 
confirmation that it is really what we should do.

[snip]
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