linux-kernel - Re: [PATCH v6] input: drv260x: Add TI drv260x haptics driver

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Date:	Tue, 19 Aug 2014 20:55:14 +0000
From:	"Murphy, Dan" <dmurphy@...com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	"mark.rutland@....com" <mark.rutland@....com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v6] input: drv260x: Add TI drv260x haptics driver

Dmitry

On 08/19/2014 03:24 PM, Dmitry Torokhov wrote:
> On Tue, Aug 19, 2014 at 08:13:32PM +0000, Murphy, Dan wrote:
>> On 08/19/2014 03:07 PM, Dmitry Torokhov wrote:
>>> On Tue, Aug 19, 2014 at 07:35:06PM +0000, Murphy, Dan wrote:
>>>> Dmitry
>>>>

<snip>

>>> 	...
>>>
>>> That one I kept.
>>>
>>
>> Yes that is correct but the enable_gpio for non-dt enabled devices this enable_gpio
>> needs to come from the platform data structure.  Without the enable gpio in the platform data
>> structure there is no way for non-dt enabled devices to set the gpio value.
> 
> What else uses the platform data structure? You are accessing gpio by name, not
> by number, in the driver so I am not sure how non-dt case will use u32 defined
> in platform data.
> 
>>
>> The haptics instance just stores the gpio descriptor returned from this call.
> 
> Right.
> 
>>
>> The devm_gpiod looks at the platform data is CONFIG_OF is not set.
> 
> Umm, how? You do not pass it anywhere...

OK I drop my argument after drilling through gpio code.

Removal of this is OK.

Thanks

> 
> Thanks.
> 


-- 
------------------
Dan Murphy
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