linux-kernel - Re: [PATCH v2] Input: add i2c/smbus driver for elan touchpad

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Message-Id: <4BE637D2-E28B-4344-B77A-6260566F7CF6@emc.com.tw>
Date:	Sat, 26 Jul 2014 16:12:58 +0800
From:	cheng wei Lin <dusonlin@....com.tw>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	bleung@...omium.org, agnescheng@...omium.org,
	"SRD1 &#65533;蝬踐&#65533;&#65533;?都&#65533;&#65533;&#65533;&#65533;" 
	<phoenix@....com.tw>, jeff.chuang@....com.tw
Subject: Re: [PATCH v2] Input: add i2c/smbus driver for elan touchpad

Hi Dmitry,

Yes, we intend to do this. Could you help to keep the original code, thank you.

Duson 


Dmitry Torokhov <dmitry.torokhov@...il.com> 於 2014/7/26 上午4:06 寫道：

> On Fri, Jul 25, 2014 at 11:20:53AM -0700, Dmitry Torokhov wrote:
>> Hi Duson,
>> 
>> On Sat, Jul 26, 2014 at 02:05:02AM +0800, cheng wei Lin wrote:
>>> Hi Dmitry,
>>> 
>>> Sorry for late to reply you and thanks for your command
>>> 
>>> Yes, I also agree, it looks great than my original code.
>> 
>> Thank you for confirming.
>> 
>>> So, should I modify this and upstream v3 patch for you?
>> 
>> No, that is fine, I'll fix it up on my end.
> 
> Hmm, I am also looking at elan_get_x_resolution() and in case of SMB
> we'll never get negative result since we are doing
> "elan_convert_res(val[1] & 0x0F)". Was it intended as such, or do we
> need to extend sign here via
> 
> 	(((char)(val[1] & 0x0F)) << 4) >> 4;
> 
> Thanks.
> 
> -- 
> Dmitry
> 

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