diff options
Diffstat (limited to 'arch/arm/mach-at91/include/mach/gpio.h')
-rw-r--r-- | arch/arm/mach-at91/include/mach/gpio.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/include/mach/gpio.h index f5ab47c064..b893dc220c 100644 --- a/arch/arm/mach-at91/include/mach/gpio.h +++ b/arch/arm/mach-at91/include/mach/gpio.h @@ -7,8 +7,18 @@ #ifndef __AT91_GPIO_H__ #define __AT91_GPIO_H__ +#include <dt-bindings/gpio/gpio.h> + #define MAX_NB_GPIO_PER_BANK 32 +enum at91_mux { + AT91_MUX_GPIO = 0, + AT91_MUX_PERIPH_A = 1, + AT91_MUX_PERIPH_B = 2, + AT91_MUX_PERIPH_C = 3, + AT91_MUX_PERIPH_D = 4, +}; + static inline unsigned pin_to_bank(unsigned pin) { return pin / MAX_NB_GPIO_PER_BANK; @@ -136,4 +146,33 @@ static inline int at91_mux_gpio_get(void __iomem *pio, unsigned mask) return (pdsr & mask) != 0; } +static inline void at91_mux_pio3_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_pio3_set_A_periph(pio, mask); + break; + case AT91_MUX_PERIPH_B: + at91_mux_pio3_set_B_periph(pio, mask); + break; + case AT91_MUX_PERIPH_C: + at91_mux_pio3_set_C_periph(pio, mask); + break; + case AT91_MUX_PERIPH_D: + at91_mux_pio3_set_D_periph(pio, mask); + break; + } + if (mux != AT91_MUX_GPIO) + at91_mux_gpio_disable(pio, mask); + + at91_mux_set_pullup(pio, mask, gpio_state & GPIO_PULL_UP); + at91_mux_pio3_set_pulldown(pio, mask, gpio_state & GPIO_PULL_DOWN); +} + #endif /* __AT91_GPIO_H__ */ |