[U-Boot] [PATCH] Davinci: add a pin multiplexer configuration API

[Wolfgang Denk <wd@denx.de>]

Dear Kim Phillips,

In message <20091029182304.469c9f7f.kim.phillips@freescale.com> you wrote:
>
> > +		if (field < PIN_MUX_NUM_FIELDS &&
> > +			(value & ~PIN_MUX_FIELD_MASK) == 0) {
> 
> the second line should not be indented as though it is the code
> subblock; it should fall directly underneath the column where 'field
> <..' starts, like this:

Agreed.

> if (field < PIN_MUX_NUM_FIELDS &&
>     (value & ~PIN_MUX_FIELD_MASK) == 0) {
> 
> > +			int offset = field * PIN_MUX_FIELD_SIZE;
> > +			unsigned int mux = pins[i].mux;
> > +			unsigned int mask = PIN_MUX_FIELD_MASK << offset;
> 
> also please just declare everything at the top of the function - same
> for value and field declarations above.

No! Why should that be needed? It would be just a waste of stack
space (except that recent compilers don't care abouyt this anyway),
and keeping variables as localized as possible seems to be a good
thing to me.

> > +			value <<= offset;
> > +			writel(value | (readl(mux) & (~mask)), mux);
> 
> I guess arm doesn't have setbits32 and friends, huh.

Not yet. Patches welcome!

Best regards,

Wolfgang Denk

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