Hi,
On Tue, Jun 10, 2014 at 1:52 AM, Julius Werner <jwerner@xxxxxxxxxxxx> wrote:
>> diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
>> index 9ffecd5..453d89e 100644
>> --- a/drivers/usb/host/xhci.h
>> +++ b/drivers/usb/host/xhci.h
>> @@ -1582,6 +1582,9 @@ struct xhci_hcd {
>> u32 port_status_u0;
>> /* Compliance Mode Timer Triggered every 2 seconds */
>> #define COMP_MODE_RCVRY_MSECS 2000
>> + /* phys for the controller */
>> + struct phy *phy2_gen;
>> + struct phy *phy3_gen;
>> };
>
> I don't think adding new variables here and restricting most of this
> logic to xhci-plat.c (in the next patch) is the best way to do it.
> There's no conceptual reason why other host controllers (e.g. xhci-pci
> or even EHCI) could not have a similar need to tune their PHY after
> reset. PHYs are universal to all host controllers.
>
> There is already a 'phy' member in struct usb_hcd which I think is
> mostly unused right now. I think it would be much less
> confusing/redundant to reuse that member for this purpose (you could
> still set it up from xhci_plat_probe(), and then call it from
> hcd_bus_resume() or something like that). Since XHCI host controllers
> already conveniently have two struct usb_hcd (one for 2.0 and one for
> 3.0), you can cleanly store references to your two PHYs in there.
Ok, i will look into the suggested approach, and raise flag in case i
have doubts.
--
Best Regards
Vivek Gautam
Samsung R&D Institute, Bangalore
India
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