[U-Boot] [PATCH 3/4] ZOOM2 Add power reset button

Menon, Nishanth nm at ti.com
Wed Jun 10 16:43:13 CEST 2009


> -----Original Message-----
> From: Peter Tyser [mailto:ptyser at xes-inc.com]
> Sent: Wednesday, June 10, 2009 9:27 AM
> > diff --git a/drivers/i2c/twl4030_i2c.c b/drivers/i2c/twl4030_i2c.c
> > index 774f813..549f974 100644
> > --- a/drivers/i2c/twl4030_i2c.c
> > +++ b/drivers/i2c/twl4030_i2c.c
> > @@ -35,3 +35,25 @@ static inline int twl4030_i2c_read_u8(u8 chip_no, u8
> *val, u8 reg)
> >  	return i2c_read(chip_no, reg, 1, val, 1);
> >  }
> >
> > +/*
> > + * Power Reset
> > + */
> > +void twl4030_power_reset_init(void)
> > +{
> > +#ifdef CONFIG_OMAP3_ZOOM2
> > +	u8 val = 0;
> > +	if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, &val,
> > +				TWL4030_PM_MASTER_P1_SW_EVENTS)) {
> > +		printf("Error:TWL4030: failed to read the power register\n");
> > +		printf("Could not initialize hardware reset\n");
> > +	} else {
> > +		val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
> > +		if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, val,
> > +					 TWL4030_PM_MASTER_P1_SW_EVENTS)) {
> > +			printf("Error:TWL4030: failed to write the power
> register\n");
> > +			printf("Could not initialize hardware reset\n");
> > +		}
> > +	}
> > +#endif
> > +}
> > +
> 
> All other drivers in drivers/i2c are host adapter drivers.  Ie they
> implement i2c_read(), i2c_write(), i2c_probe(), and i2c_init().  The
> twl4030_i2c.c driver doesn't seem to fit this mold.  Perhaps it would be
> better placed in drivers/misc or a new drivers/power directory similar
> to Linux?

This function probably belongs to board/omap3/common/power.c -> or even better to the board file itself?
Regards,
Nishanth Menon


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