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-rw-r--r--arch/arm/mach-pxa/include/mach/gpio.h110
1 files changed, 2 insertions, 108 deletions
diff --git a/arch/arm/mach-pxa/include/mach/gpio.h b/arch/arm/mach-pxa/include/mach/gpio.h
index c4639502efca..004cade7bb13 100644
--- a/arch/arm/mach-pxa/include/mach/gpio.h
+++ b/arch/arm/mach-pxa/include/mach/gpio.h
@@ -24,84 +24,10 @@
24#ifndef __ASM_ARCH_PXA_GPIO_H 24#ifndef __ASM_ARCH_PXA_GPIO_H
25#define __ASM_ARCH_PXA_GPIO_H 25#define __ASM_ARCH_PXA_GPIO_H
26 26
27#include <mach/irqs.h>
28#include <mach/hardware.h>
29#include <asm-generic/gpio.h> 27#include <asm-generic/gpio.h>
28/* The defines for the driver are needed for the accelerated accessors */
29#include "gpio-pxa.h"
30 30
31#define GPIO_REGS_VIRT io_p2v(0x40E00000)
32
33#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
34#define GPIO_REG(x) (*(volatile u32 *)(GPIO_REGS_VIRT + (x)))
35
36/* GPIO Pin Level Registers */
37#define GPLR0 GPIO_REG(BANK_OFF(0) + 0x00)
38#define GPLR1 GPIO_REG(BANK_OFF(1) + 0x00)
39#define GPLR2 GPIO_REG(BANK_OFF(2) + 0x00)
40#define GPLR3 GPIO_REG(BANK_OFF(3) + 0x00)
41
42/* GPIO Pin Direction Registers */
43#define GPDR0 GPIO_REG(BANK_OFF(0) + 0x0c)
44#define GPDR1 GPIO_REG(BANK_OFF(1) + 0x0c)
45#define GPDR2 GPIO_REG(BANK_OFF(2) + 0x0c)
46#define GPDR3 GPIO_REG(BANK_OFF(3) + 0x0c)
47
48/* GPIO Pin Output Set Registers */
49#define GPSR0 GPIO_REG(BANK_OFF(0) + 0x18)
50#define GPSR1 GPIO_REG(BANK_OFF(1) + 0x18)
51#define GPSR2 GPIO_REG(BANK_OFF(2) + 0x18)
52#define GPSR3 GPIO_REG(BANK_OFF(3) + 0x18)
53
54/* GPIO Pin Output Clear Registers */
55#define GPCR0 GPIO_REG(BANK_OFF(0) + 0x24)
56#define GPCR1 GPIO_REG(BANK_OFF(1) + 0x24)
57#define GPCR2 GPIO_REG(BANK_OFF(2) + 0x24)
58#define GPCR3 GPIO_REG(BANK_OFF(3) + 0x24)
59
60/* GPIO Rising Edge Detect Registers */
61#define GRER0 GPIO_REG(BANK_OFF(0) + 0x30)
62#define GRER1 GPIO_REG(BANK_OFF(1) + 0x30)
63#define GRER2 GPIO_REG(BANK_OFF(2) + 0x30)
64#define GRER3 GPIO_REG(BANK_OFF(3) + 0x30)
65
66/* GPIO Falling Edge Detect Registers */
67#define GFER0 GPIO_REG(BANK_OFF(0) + 0x3c)
68#define GFER1 GPIO_REG(BANK_OFF(1) + 0x3c)
69#define GFER2 GPIO_REG(BANK_OFF(2) + 0x3c)
70#define GFER3 GPIO_REG(BANK_OFF(3) + 0x3c)
71
72/* GPIO Edge Detect Status Registers */
73#define GEDR0 GPIO_REG(BANK_OFF(0) + 0x48)
74#define GEDR1 GPIO_REG(BANK_OFF(1) + 0x48)
75#define GEDR2 GPIO_REG(BANK_OFF(2) + 0x48)
76#define GEDR3 GPIO_REG(BANK_OFF(3) + 0x48)
77
78/* GPIO Alternate Function Select Registers */
79#define GAFR0_L GPIO_REG(0x0054)
80#define GAFR0_U GPIO_REG(0x0058)
81#define GAFR1_L GPIO_REG(0x005C)
82#define GAFR1_U GPIO_REG(0x0060)
83#define GAFR2_L GPIO_REG(0x0064)
84#define GAFR2_U GPIO_REG(0x0068)
85#define GAFR3_L GPIO_REG(0x006C)
86#define GAFR3_U GPIO_REG(0x0070)
87
88/* More handy macros. The argument is a literal GPIO number. */
89
90#define GPIO_bit(x) (1 << ((x) & 0x1f))
91
92#define GPLR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x00)
93#define GPDR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x0c)
94#define GPSR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x18)
95#define GPCR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x24)
96#define GRER(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x30)
97#define GFER(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x3c)
98#define GEDR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x48)
99#define GAFR(x) GPIO_REG(0x54 + (((x) & 0x70) >> 2))
100
101
102#define NR_BUILTIN_GPIO PXA_GPIO_IRQ_NUM
103
104#define gpio_to_bank(gpio) ((gpio) >> 5)
105#define gpio_to_irq(gpio) IRQ_GPIO(gpio) 31#define gpio_to_irq(gpio) IRQ_GPIO(gpio)
106 32
107static inline int irq_to_gpio(unsigned int irq) 33static inline int irq_to_gpio(unsigned int irq)
@@ -118,37 +44,5 @@ static inline int irq_to_gpio(unsigned int irq)
118 return -1; 44 return -1;
119} 45}
120 46
121#ifdef CONFIG_CPU_PXA26x
122/* GPIO86/87/88/89 on PXA26x have their direction bits in GPDR2 inverted,
123 * as well as their Alternate Function value being '1' for GPIO in GAFRx.
124 */
125static inline int __gpio_is_inverted(unsigned gpio)
126{
127 return cpu_is_pxa25x() && gpio > 85;
128}
129#else
130static inline int __gpio_is_inverted(unsigned gpio) { return 0; }
131#endif
132
133/*
134 * On PXA25x and PXA27x, GAFRx and GPDRx together decide the alternate
135 * function of a GPIO, and GPDRx cannot be altered once configured. It
136 * is attributed as "occupied" here (I know this terminology isn't
137 * accurate, you are welcome to propose a better one :-)
138 */
139static inline int __gpio_is_occupied(unsigned gpio)
140{
141 if (cpu_is_pxa27x() || cpu_is_pxa25x()) {
142 int af = (GAFR(gpio) >> ((gpio & 0xf) * 2)) & 0x3;
143 int dir = GPDR(gpio) & GPIO_bit(gpio);
144
145 if (__gpio_is_inverted(gpio))
146 return af != 1 || dir == 0;
147 else
148 return af != 0 || dir != 0;
149 } else
150 return GPDR(gpio) & GPIO_bit(gpio);
151}
152
153#include <plat/gpio.h> 47#include <plat/gpio.h>
154#endif 48#endif