[PATCH/RFT v2 09/17] regulator: fixed: Add over current event

[Axel Haslam]

On Tue, Oct 25, 2016 at 4:57 PM, Axel Haslam <ahaslam at baylibre.com> wrote:
> On Tue, Oct 25, 2016 at 4:33 PM, Mark Brown <broonie at kernel.org> wrote:
>> On Tue, Oct 25, 2016 at 02:55:48PM +0200, Axel Haslam wrote:
>>
>>> To be able to use regulator to handle the overcurrent pin, i need to be able
>>> to somehow retrieve the over current pin state from the regulator driver.
>>
>> What makes you say that, none of the existing users need this?
>>
>>> As i was trying your suggestion, i remembered why i thought i should use
>>> mode instead of status: Status seems to be for internal regulator driver use,
>>> there is no regulator_get_status, function and REGULATOR_STATUS_* are defined
>>> in driver.h and not in consumer.h as  REGULATOR_MODE_*
>>
>>> Would you be ok if i allow consumers to get the status via a new
>>> "regulator_get_status" call?
>>
>> What would they do with this information that they can't do with the
>> existing error notification?
>
> the usb core relies in two flags that need too be set properly, one is the
> over-current indicator RH_PS_POCI , and the other is the over current
> indicator "change" (RH_PS_OCIC).
>
> The idea was to use the notification to set the over current indicator
> "change" flag,
> which will happen for both rising and falling edges. And to use
> get_status or get_mode
> to set the over-current indicator flag which should reflect the actual
> pin status.
>

BTW, for the notification, i should have used a new event flag
something like: OVER_CURRENT_CHANGED and not just OVER_CURRENT


Regards
Axel

>
> -Axel.