diff options
Diffstat (limited to 'include/asm-arm/arch-at91/gpio.h')
| -rw-r--r-- | include/asm-arm/arch-at91/gpio.h | 168 |
1 files changed, 18 insertions, 150 deletions
diff --git a/include/asm-arm/arch-at91/gpio.h b/include/asm-arm/arch-at91/gpio.h index bc53171..716f81f 100644 --- a/include/asm-arm/arch-at91/gpio.h +++ b/include/asm-arm/arch-at91/gpio.h @@ -216,155 +216,23 @@ static inline unsigned pin_to_mask(unsigned pin) return 1 << (pin % 32); } -/* - * mux the pin to the "GPIO" peripheral role. - */ -static inline int at91_set_GPIO_periph(unsigned pin, int use_pullup) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_PER); - return 0; -} - -/* - * mux the pin to the "A" internal peripheral role. - */ -static inline int at91_set_A_periph(unsigned pin, int use_pullup) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_ASR); - __raw_writel(mask, pio + PIO_PDR); - return 0; -} - -/* - * mux the pin to the "B" internal peripheral role. - */ -static inline int at91_set_B_periph(unsigned pin, int use_pullup) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_BSR); - __raw_writel(mask, pio + PIO_PDR); - return 0; -} - -/* - * mux the pin to the gpio controller (instead of "A" or "B" peripheral), and - * configure it for an input. - */ -static inline int at91_set_gpio_input(unsigned pin, int use_pullup) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR)); - __raw_writel(mask, pio + PIO_ODR); - __raw_writel(mask, pio + PIO_PER); - return 0; -} - -/* - * mux the pin to the gpio controller (instead of "A" or "B" peripheral), - * and configure it for an output. - */ -static inline int at91_set_gpio_output(unsigned pin, int value) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + PIO_IDR); - __raw_writel(mask, pio + PIO_PUDR); - __raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR)); - __raw_writel(mask, pio + PIO_OER); - __raw_writel(mask, pio + PIO_PER); - return 0; -} - -/* - * enable/disable the glitch filter; mostly used with IRQ handling. - */ -static inline int at91_set_deglitch(unsigned pin, int is_on) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + (is_on ? PIO_IFER : PIO_IFDR)); - return 0; -} - -/* - * enable/disable the multi-driver; This is only valid for output and - * allows the output pin to run as an open collector output. - */ -static inline int at91_set_multi_drive(unsigned pin, int is_on) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + (is_on ? PIO_MDER : PIO_MDDR)); - return 0; -} - -static inline int gpio_direction_input(unsigned pin) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - if (!(__raw_readl(pio + PIO_PSR) & mask)) - return -EINVAL; - __raw_writel(mask, pio + PIO_ODR); - return 0; -} - -static inline int gpio_direction_output(unsigned pin, int value) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - if (!(__raw_readl(pio + PIO_PSR) & mask)) - return -EINVAL; - __raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR)); - __raw_writel(mask, pio + PIO_OER); - return 0; -} - -/* - * assuming the pin is muxed as a gpio output, set its value. - */ -static inline int at91_set_gpio_value(unsigned pin, int value) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - - __raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR)); - return 0; -} - -/* - * read the pin's value (works even if it's not muxed as a gpio). - */ -static inline int at91_get_gpio_value(unsigned pin) -{ - void *pio = pin_to_controller(pin); - unsigned mask = pin_to_mask(pin); - u32 pdsr; - - pdsr = __raw_readl(pio + PIO_PDSR); - return (pdsr & mask) != 0; -} - +/* The following macros are need for backward compatibility */ +#define at91_set_GPIO_periph(x, y) \ + at91_set_gpio_periph((x - PIN_BASE) / 32,(x % 32), y) +#define at91_set_A_periph(x, y) \ + at91_set_a_periph((x - PIN_BASE) / 32,(x % 32), y) +#define at91_set_B_periph(x, y) \ + at91_set_b_periph((x - PIN_BASE) / 32,(x % 32), y) +#define at91_set_gpio_output(x, y) \ + at91_set_pio_output((x - PIN_BASE) / 32,(x % 32), y) +#define at91_set_gpio_input(x, y) \ + at91_set_pio_input((x - PIN_BASE) / 32,(x % 32), y) +#define at91_set_gpio_value(x, y) \ + at91_set_pio_value((x - PIN_BASE) / 32,(x % 32), y) +#define at91_get_gpio_value(x) \ + at91_get_pio_value((x - PIN_BASE) / 32,(x % 32)) +#else +#define at91_set_gpio_value(x, y) at91_set_pio_value(x, y) +#define at91_get_gpio_value(x) at91_get_pio_value(x) #endif #endif |