Re: [PATCH 3/3] usb: phy-generic: Add ULPI VBUS support

[Chris Ruehl]

On Tuesday, December 03, 2013 04:15 PM, Heikki Krogerus wrote:
> On Mon, Dec 02, 2013 at 03:05:19PM +0800, Chris Ruehl wrote:
> > @@ -154,6 +164,27 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop,
> >   {
> >   	int err;
> >
> > +	if (nop->ulpi_vbus>  0) {
> > +		unsigned int flags = 0;
> > +
> > +		if (nop->ulpi_vbus&  0x1)
> > +			flags |= ULPI_OTG_DRVVBUS;
> > +		if (nop->ulpi_vbus&  0x2)
> > +			flags |= ULPI_OTG_DRVVBUS_EXT;
> > +		if (nop->ulpi_vbus&  0x4)
> > +			flags |= ULPI_OTG_EXTVBUSIND;
> > +		if (nop->ulpi_vbus&  0x8)
> > +			flags |= ULPI_OTG_CHRGVBUS;
> > +
> > +		nop->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, flags);
> > +		if (!nop->ulpi) {
> > +			dev_err(dev, "Failed create ULPI Phy\n");
> > +			return -ENOMEM;
> > +		}
> > +		dev_dbg(dev, "Create ULPI Phy\n");
> > +		nop->ulpi->io_priv =  nop->viewport;
> > +	}
>
> This is so wrong. You are registering one kind of usb phy driver from
> an other. Change drivers/usb/phy/ulpi.c to be a platform device. The
> whole flag system in it is pretty horrid. While you are at it, change
> that so it sets the values based on boolean flags from OF properties
> or platform data.
>
> NAK for the whole set.

Heikki,

Thanks for your comments, even not much positive to me.. any how.
My intention on the "horrid" path was to reduce kernel code where
one of_read32 vs. four of_boolean. And mentioned logic is simple. But that's 
history.

On my way to find a solution for my board I'd look around and found using of
phy-ulpi.c functions in phy-tegra-usb.c and don't mind to use them too.

I accept your NAK and will work on a patch to make phy-ulpi.c working as 
platform device.

Last question to you. What you don't like on the patch to support chip-select 
gpio of my patch-set.. I ask because you NAK the whole set.
I really need the ChipSelect function to make my hardware work!

Chris

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