diff options
Diffstat (limited to 'arch/arm/mach-stmp378x/include/mach/pins.h')
| -rw-r--r-- | arch/arm/mach-stmp378x/include/mach/pins.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-stmp378x/include/mach/pins.h b/arch/arm/mach-stmp378x/include/mach/pins.h index 93f952d35969..f36296a9a2c0 100644 --- a/arch/arm/mach-stmp378x/include/mach/pins.h +++ b/arch/arm/mach-stmp378x/include/mach/pins.h @@ -19,6 +19,32 @@ #define __ASM_ARCH_PINS_H /* + * The number of pin banks and pins per a bank on STMP378x + */ +#define STMP3XXX_PINMUX_NR_BANKS 4 +#define STMP3XXX_PINMUX_BANK_SIZE 32 + +/* + * Macro to convert a pin bank/number pair to a raw pin number + * STMP3XXX_PINMUX_BANK_SIZE and STMP3XXX_PINMUX_NR_BANKS should be + * defined before including this header. + */ +#define STMP3XXX_PINID(bank, pin) (bank * STMP3XXX_PINMUX_BANK_SIZE + pin) +#define STMP3XXX_PINID_TO_BANK(pinid) (pinid / STMP3XXX_PINMUX_BANK_SIZE) +#define STMP3XXX_PINID_TO_PINNUM(pinid) (pinid % STMP3XXX_PINMUX_BANK_SIZE) + +/* + * Special invalid pin identificator to show a pin doesn't exist + */ +#define PINID_NO_PIN STMP3XXX_PINID(STMP3XXX_PINMUX_NR_BANKS, 0) + +static inline int stmp3xxx_valid_pin(unsigned pin) +{ + return STMP3XXX_PINID_TO_BANK(pin) < STMP3XXX_PINMUX_NR_BANKS && + STMP3XXX_PINID_TO_PINNUM(pin) < STMP3XXX_PINMUX_BANK_SIZE; +} + +/* * Define all STMP378x pins, a pin name corresponds to a STMP378x hardware * interface this pin belongs to. */ |