diff options
Diffstat (limited to 'arch/arm/mach-pxa/include/mach/gpio.h')
-rw-r--r-- | arch/arm/mach-pxa/include/mach/gpio.h | 110 |
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 | ||
107 | static inline int irq_to_gpio(unsigned int irq) | 33 | static 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 | */ | ||
125 | static inline int __gpio_is_inverted(unsigned gpio) | ||
126 | { | ||
127 | return cpu_is_pxa25x() && gpio > 85; | ||
128 | } | ||
129 | #else | ||
130 | static 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 | */ | ||
139 | static 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 |