From e2bb6650ef94c64723e2dd35ab92410b9477bc64 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 20 Jan 2009 14:38:24 +0800 Subject: [ARM] pxa: add GPIO support for pxa168 Signed-off-by: Eric Miao --- arch/arm/mach-mmp/include/mach/gpio.h | 36 +++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/arm/mach-mmp/include/mach/gpio.h (limited to 'arch/arm/mach-mmp/include/mach/gpio.h') diff --git a/arch/arm/mach-mmp/include/mach/gpio.h b/arch/arm/mach-mmp/include/mach/gpio.h new file mode 100644 index 00000000000..ab26d13295c --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/gpio.h @@ -0,0 +1,36 @@ +#ifndef __ASM_MACH_GPIO_H +#define __ASM_MACH_GPIO_H + +#include +#include +#include + +#define GPIO_REGS_VIRT (APB_VIRT_BASE + 0x19000) + +#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2)) +#define GPIO_REG(x) (*((volatile u32 *)(GPIO_REGS_VIRT + (x)))) + +#define NR_BUILTIN_GPIO (128) + +#define gpio_to_bank(gpio) ((gpio) >> 5) +#define gpio_to_irq(gpio) (IRQ_GPIO_START + (gpio)) +#define irq_to_gpio(irq) ((irq) - IRQ_GPIO_START) + + +#define __gpio_is_inverted(gpio) (0) +#define __gpio_is_occupied(gpio) (0) + +/* NOTE: these macros are defined here to make optimization of + * gpio_{get,set}_value() to work when 'gpio' is a constant. + * Usage of these macros otherwise is no longer recommended, + * use generic GPIO API whenever possible. + */ +#define GPIO_bit(gpio) (1 << ((gpio) & 0x1f)) + +#define GPLR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x00) +#define GPDR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x0c) +#define GPSR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x18) +#define GPCR(x) GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x24) + +#include +#endif /* __ASM_MACH_GPIO_H */ -- cgit v1.2.3