On Thu, Dec 08, 2011 at 02:24:46PM -0800, Stephen Warren wrote:
> Uwe Kleine-König wrote at Thursday, December 08, 2011 3:22 PM:
> > - add some consts
> > - don't use the group index alone to determine the value to write to
> > foo's mux register. For spi and i2c the group index is always 0.
> > Additionally using the function index makes much more sense as it
> > generates a different value for each function/group pair.
> > - fix a few syntax errors
>
> > @@ -600,7 +600,7 @@ static int foo_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
> > int foo_enable(struct pinctrl_dev *pctldev, unsigned selector,
> > unsigned group)
> > {
> > - u8 regbit = (1 << group);
> > + u8 regbit = (1 << selector + group);
> >
> > writeb((readb(MUX)|regbit), MUX)
> > return 0;
> > @@ -609,7 +609,7 @@ int foo_enable(struct pinctrl_dev *pctldev, unsigned selector,
> > int foo_disable(struct pinctrl_dev *pctldev, unsigned selector,
> > unsigned group)
> > {
> > - u8 regbit = (1 << group);
> > + u8 regbit = (1 << selector);
> >
> > writeb((readb(MUX) & ~(regbit)), MUX)
> > return 0;
>
> Shouldn't those two regbit calculations match?
Yes, of course. (Well, it depends on the register model ...)
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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