On Mon, Aug 15, 2011 at 5:49 PM, Paul Parsons <lost.distance@xxxxxxxxx> wrote: > --- On Mon, 15/8/11, Eric Miao <eric.y.miao@xxxxxxxxx> wrote: >> > MFP_CFG_OUT(GPIO102, ...) had already moved from the >> patch v1 platform file to patch v2 mfp-pxa27x.h because it >> was suggested that MFP macros should not be used directly. >> > Changing the direction in the platform file would >> surely require using the MFP macros again, so how to keep >> everyone happy? Maybe I should just define a more generic >> name such as GPIO102_GPIO_OUT? >> >> I guess we need a new definition for this config, looks >> like SCLK here >> is different from a normal configuration because the pxa27x >> is used >> as a SPI slave here? >> >> And checked a bit with the pxa27x developer manual, there >> is no SCLK >> for this GPIO102???? > > GPIO102 is apparently a navpoint power enable; the old linux-2.6.21-hh20 kernel from handhelds.org defines it thus: > > #define GPIO_NR_HX4700_SYNAPTICS_POWER_ON 102 > > I verified that it does need to be asserted before the navpoint will work. I don't possess any hx4700 developer documentation; perhaps Philipp can shed some light on GPIO102. > Ah, that case it's simply a GPIO then. You could simply use GPIO102_GPIO to configure the pin. And direction is controlled by gpio_direction_*(). -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
