Simplifies specifying gpio numbers from bank/number info. >From linux kernel. Signed-off-by: Marc Reilly <marc@xxxxxxxxxxxxxxx> --- arch/arm/mach-imx/include/mach/imx-regs.h | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-imx/include/mach/imx-regs.h b/arch/arm/mach-imx/include/mach/imx-regs.h index 605d320..a234621 100644 --- a/arch/arm/mach-imx/include/mach/imx-regs.h +++ b/arch/arm/mach-imx/include/mach/imx-regs.h @@ -57,6 +57,10 @@ # error "unknown i.MX soc type" #endif +/* There's a off-by-one betweem the gpio bank number and the gpiochip */ +/* range e.g. GPIO_1_5 is gpio 5 under linux */ +#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr)) + #define GPIO_PIN_MASK 0x1f #define GPIO_PORT_SHIFT 5 -- 1.7.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
