gpio_regs.h

pxa270 Linux开发板上用的读取、修改PXA270寄存器的程序

#define	__REG(x)	(x)
#define __REG2(x, y)	((x) + (y))

/* GPIO alternate function mode & direction */

#define GPIO_IN			0x000
#define GPIO_OUT		0x080
#define GPIO_ALT_FN_1_IN	0x100
#define GPIO_ALT_FN_1_OUT	0x180
#define GPIO_ALT_FN_2_IN	0x200
#define GPIO_ALT_FN_2_OUT	0x280
#define GPIO_ALT_FN_3_IN	0x300
#define GPIO_ALT_FN_3_OUT	0x380
#define GPIO_MD_MASK_NR		0x07f
#define GPIO_MD_MASK_DIR	0x080
#define GPIO_MD_MASK_FN		0x300
#define GPIO_DFLT_LOW		0x400
#define GPIO_DFLT_HIGH		0x800

#define GPLR0		__REG(0x40E00000)  /* GPIO Pin-Level Register GPIO<31:0> */
#define GPLR1		__REG(0x40E00004)  /* GPIO Pin-Level Register GPIO<63:32> */
#define GPLR2		__REG(0x40E00008)  /* GPIO Pin-Level Register GPIO<80:64> */

#define GPDR0		__REG(0x40E0000C)  /* GPIO Pin Direction Register GPIO<31:0> */
#define GPDR1		__REG(0x40E00010)  /* GPIO Pin Direction Register GPIO<63:32> */
#define GPDR2		__REG(0x40E00014)  /* GPIO Pin Direction Register GPIO<80:64> */

#define GPSR0		__REG(0x40E00018)  /* GPIO Pin Output Set Register GPIO<31:0> */
#define GPSR1		__REG(0x40E0001C)  /* GPIO Pin Output Set Register GPIO<63:32> */
#define GPSR2		__REG(0x40E00020)  /* GPIO Pin Output Set Register GPIO<80:64> */

#define GPCR0		__REG(0x40E00024)  /* GPIO Pin Output Clear Register GPIO<31:0> */
#define GPCR1		__REG(0x40E00028)  /* GPIO Pin Output Clear Register GPIO <63:32> */
#define GPCR2		__REG(0x40E0002C)  /* GPIO Pin Output Clear Register GPIO <80:64> */

#define GRER0		__REG(0x40E00030)  /* GPIO Rising-Edge Detect Register GPIO<31:0> */
#define GRER1		__REG(0x40E00034)  /* GPIO Rising-Edge Detect Register GPIO<63:32> */
#define GRER2		__REG(0x40E00038)  /* GPIO Rising-Edge Detect Register GPIO<80:64> */

#define GFER0		__REG(0x40E0003C)  /* GPIO Falling-Edge Detect Register GPIO<31:0> */
#define GFER1		__REG(0x40E00040)  /* GPIO Falling-Edge Detect Register GPIO<63:32> */
#define GFER2		__REG(0x40E00044)  /* GPIO Falling-Edge Detect Register GPIO<80:64> */

#define GEDR0		__REG(0x40E00048)  /* GPIO Edge Detect Status Register GPIO<31:0> */
#define GEDR1		__REG(0x40E0004C)  /* GPIO Edge Detect Status Register GPIO<63:32> */
#define GEDR2		__REG(0x40E00050)  /* GPIO Edge Detect Status Register GPIO<80:64> */

#define GAFR0_L		__REG(0x40E00054)  /* GPIO Alternate Function Select Register GPIO<15:0> */
#define GAFR0_U		__REG(0x40E00058)  /* GPIO Alternate Function Select Register GPIO<31:16> */
#define GAFR1_L		__REG(0x40E0005C)  /* GPIO Alternate Function Select Register GPIO<47:32> */
#define GAFR1_U		__REG(0x40E00060)  /* GPIO Alternate Function Select Register GPIO<63:48> */
#define GAFR2_L		__REG(0x40E00064)  /* GPIO Alternate Function Select Register GPIO<79:64> */
#define GAFR2_U		__REG(0x40E00068)  /* GPIO Alternate Function Select Register GPIO<95-80> */
#define GAFR3_L		__REG(0x40E0006C)  /* GPIO Alternate Function Select Register GPIO<111:96> */
#define GAFR3_U		__REG(0x40E00070)  /* GPIO Alternate Function Select Register GPIO<127:112> */

#define GPLR3		__REG(0x40E00100)  /* GPIO Pin-Level Register GPIO<127:96> */
#define GPDR3		__REG(0x40E0010C)  /* GPIO Pin Direction Register GPIO<127:96> */
#define GPSR3		__REG(0x40E00118)  /* GPIO Pin Output Set Register GPIO<127:96> */
#define GPCR3		__REG(0x40E00124)  /* GPIO Pin Output Clear Register GPIO<127:96> */
#define GRER3		__REG(0x40E00130)  /* GPIO Rising-Edge Detect Register GPIO<127:96> */
#define GFER3		__REG(0x40E0013C)  /* GPIO Falling-Edge Detect Register GPIO<127:96> */
#define GEDR3		__REG(0x40E00148)  /* GPIO Edge Detect Status Register GPIO<127:96> */

/* More handy macros.  The argument is a literal GPIO number. */

#define GPIO_bit(x)	(1 << ((x) & 0x1f))

#define _GPLR(x)	__REG2(0x40E00000, ((x) & 0x60) >> 3)
#define _GPDR(x)	__REG2(0x40E0000C, ((x) & 0x60) >> 3)
#define _GPSR(x)	__REG2(0x40E00018, ((x) & 0x60) >> 3)
#define _GPCR(x)	__REG2(0x40E00024, ((x) & 0x60) >> 3)
#define _GRER(x)	__REG2(0x40E00030, ((x) & 0x60) >> 3)
#define _GFER(x)	__REG2(0x40E0003C, ((x) & 0x60) >> 3)
#define _GEDR(x)	__REG2(0x40E00048, ((x) & 0x60) >> 3)
#define _GAFR(x)	__REG2(0x40E00054, ((x) & 0x70) >> 2)

#define GPLR(x) 	(((((x) & 0x7f) < 96) ? _GPLR(x) : GPLR3))
#define GPDR(x)		(((((x) & 0x7f) < 96) ? _GPDR(x) : GPDR3))
#define GPSR(x)		(((((x) & 0x7f) < 96) ? _GPSR(x) : GPSR3))
#define GPCR(x)		(((((x) & 0x7f) < 96) ? _GPCR(x) : GPCR3))
#define GRER(x)		(((((x) & 0x7f) < 96) ? _GRER(x) : GRER3))
#define GFER(x)		(((((x) & 0x7f) < 96) ? _GFER(x) : GFER3))
#define GEDR(x)		(((((x) & 0x7f) < 96) ? _GEDR(x) : GEDR3))
#define GAFR(x)		(((((x) & 0x7f) < 96) ? _GAFR(x) : \
			 ((((x) & 0x7f) < 112) ? GAFR3_L : GAFR3_U)))