On 28.06.22 22:38, Sam Ravnborg wrote: > Lowlevel init code may wish the ability to configure pins, e.g. for low > level debug UART. The pinctrl-at91 driver already exports an > at91_mux_pin function, but that one is only usable after driver > probe. Instead, provide an at91_mux_pio_pin function, which can be used > at all times. > > This is similar to the already existing at91_mux_pio3_pin function > > Signed-off-by: Sam Ravnborg <[email protected]>
Reviewed-by: Ahmad Fatoum <[email protected]> > --- > arch/arm/mach-at91/include/mach/gpio.h | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/arch/arm/mach-at91/include/mach/gpio.h > b/arch/arm/mach-at91/include/mach/gpio.h > index ddd6971e3..7f84f41e5 100644 > --- a/arch/arm/mach-at91/include/mach/gpio.h > +++ b/arch/arm/mach-at91/include/mach/gpio.h > @@ -151,6 +151,31 @@ static inline int at91_mux_gpio_get(void __iomem *pio, > unsigned mask) > return (pdsr & mask) != 0; > } > > +static inline void at91_mux_pio_pin(void __iomem *pio, unsigned mask, > + enum at91_mux mux, int gpio_state) > +{ > + at91_mux_disable_interrupt(pio, mask); > + > + switch(mux) { > + case AT91_MUX_GPIO: > + at91_mux_gpio_enable(pio, mask); > + break; > + case AT91_MUX_PERIPH_A: > + at91_mux_set_A_periph(pio, mask); > + break; > + case AT91_MUX_PERIPH_B: > + at91_mux_set_B_periph(pio, mask); > + break; > + default: > + /* ignore everything else */ > + break; > + } > + if (mux != AT91_MUX_GPIO) > + at91_mux_gpio_disable(pio, mask); > + > + at91_mux_set_pullup(pio, mask, gpio_state & GPIO_PULL_UP); > +} > + > static inline void at91_mux_pio3_pin(void __iomem *pio, unsigned mask, > enum at91_mux mux, int gpio_state) > { -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
