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Re: mwifiex card reset

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Hi Bing,

2014-07-01 8:44 GMT+02:00 Bing Zhao <bzhao@xxxxxxxxxxx>:
[snip]
>> Yes, a helper might be the best solution. It could even be a generic one, that
>> just takes any number of clocks, reset GPIOs and regulators and takes care
>> for sequencing them. However, we need to reference that helper from the
>> mwifiex driver, for two reasons.
>>
>> a) we need to make sure the reset helper gets to do its job before the
>> mwifiex driver scans the SDIO bus, and
>>
>> b) the reset helper needs to be called when the mmc host controller wants
>> to do a card reset.
>>
>> Hence, we'll need some sort of internal API for this, and a phandle in dts. I
>> wonder whether that glue logic might be better off living in the mmc core, as
>> mwifiex might well be interfaced to other hosts?
>
> I may have missed something, but doesn't the MMC_POWER_OFF and MMC_POWER_ON|UP handling in controller driver help?
> Anyway the clocks/GPIOs/regulators are sort of platform dependent. Would it be better putting it in /arch/arm/mach-xxxxx/?

what about usb? the mwifiex can also be connected via usb to the host,
isn't the reset
logic the same in that case, independent of sdio
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