[PATCH 1/2] i2c: s3c2410: add optional pin configuration using pinctrl interface

[Thomas Abraham]

On 11 September 2012 00:51, Stephen Warren <swarren at wwwdotorg.org> wrote:
> On 09/06/2012 05:06 AM, Thomas Abraham wrote:
>> On 6 September 2012 15:04, Tomasz Figa <t.figa at samsung.com> wrote:
>>> Hi,
>>>
>>> This patch shows the problem of the need to explicitly migrate all drivers
>>> to pinctrl.
>>>
>>> Maybe we should consider extending the pinctrl subsystem to set the default
>>> state automatically before binding a driver to a device, at least in case
>>> of DT-based platforms?
>>
>> The pinctrl driver allows for activating default pin configuration
>> when the pinctrl driver loads. This is referred to as "hogging". But
>> should hog be used or not is something that needs to be decided. Some
>> of the factors which favor the driver explicitly setting up the pin
>> configuration are
>>
>> 1. After a suspend and resume cycle, the pin configuration registers
>> may be reset to default values. Hence, during resume, the pin
>> configuration has be redone.
>
> I'd think it's the pinctrl driver's responsibility to make hogging work
> correctly across suspend/resume.

Ok. I will add this functionality in the Samsung pinctrl driver.

Thanks,
Thomas.

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