diff options
Diffstat (limited to 'drivers/gpio/at91_gpio.c')
| -rw-r--r-- | drivers/gpio/at91_gpio.c | 54 |
1 files changed, 32 insertions, 22 deletions
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c index c0a97bc..be2a026 100644 --- a/drivers/gpio/at91_gpio.c +++ b/drivers/gpio/at91_gpio.c @@ -24,19 +24,29 @@ * MA 02111-1307 USA */ +/* + * WARNING: + * + * As the code is right now, it expects all PIO ports A,B,C,... + * to be evenly spaced in the memory map: + * ATMEL_BASE_PIOA + port * sizeof at91pio_t + * This might not necessaryly be true in future Atmel SoCs. + * This code should be fixed to use a pointer array to the ports. + */ + #include <config.h> #include <common.h> +#include <asm/io.h> #include <asm/sizes.h> #include <asm/arch/hardware.h> -#include <asm/arch/io.h> #include <asm/arch/at91_pio.h> int at91_set_pio_pullup(unsigned port, unsigned pin, int use_pullup) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; if (use_pullup) writel(1 << pin, &pio->port[port].puer); @@ -52,10 +62,10 @@ int at91_set_pio_pullup(unsigned port, unsigned pin, int use_pullup) */ int at91_set_pio_periph(unsigned port, unsigned pin, int use_pullup) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; writel(mask, &pio->port[port].idr); at91_set_pio_pullup(port, pin, use_pullup); @@ -69,10 +79,10 @@ int at91_set_pio_periph(unsigned port, unsigned pin, int use_pullup) */ int at91_set_a_periph(unsigned port, unsigned pin, int use_pullup) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; writel(mask, &pio->port[port].idr); at91_set_pio_pullup(port, pin, use_pullup); @@ -87,10 +97,10 @@ int at91_set_a_periph(unsigned port, unsigned pin, int use_pullup) */ int at91_set_b_periph(unsigned port, unsigned pin, int use_pullup) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; writel(mask, &pio->port[port].idr); at91_set_pio_pullup(port, pin, use_pullup); @@ -106,10 +116,10 @@ int at91_set_b_periph(unsigned port, unsigned pin, int use_pullup) */ int at91_set_pio_input(unsigned port, u32 pin, int use_pullup) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; writel(mask, &pio->port[port].idr); at91_set_pio_pullup(port, pin, use_pullup); @@ -125,10 +135,10 @@ int at91_set_pio_input(unsigned port, u32 pin, int use_pullup) */ int at91_set_pio_output(unsigned port, u32 pin, int value) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; writel(mask, &pio->port[port].idr); writel(mask, &pio->port[port].pudr); @@ -147,10 +157,10 @@ int at91_set_pio_output(unsigned port, u32 pin, int value) */ int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; if (is_on) writel(mask, &pio->port[port].ifer); @@ -166,10 +176,10 @@ int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on) */ int at91_set_pio_multi_drive(unsigned port, unsigned pin, int is_on) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; if (is_on) writel(mask, &pio->port[port].mder); @@ -184,10 +194,10 @@ int at91_set_pio_multi_drive(unsigned port, unsigned pin, int is_on) */ int at91_set_pio_value(unsigned port, unsigned pin, int value) { - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; if (value) writel(mask, &pio->port[port].sodr); @@ -202,11 +212,11 @@ int at91_set_pio_value(unsigned port, unsigned pin, int value) */ int at91_get_pio_value(unsigned port, unsigned pin) { - u32 pdsr = 0; - at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE; + u32 pdsr = 0; + at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA; u32 mask; - if ((port < AT91_PIO_PORTS) && (pin < 32)) { + if ((port < ATMEL_PIO_PORTS) && (pin < 32)) { mask = 1 << pin; pdsr = readl(&pio->port[port].pdsr) & mask; } |