[POWERPC] Sky Cpu and Nexus: code style improvement
[linux-2.6/openmoko-kernel/knife-kernel.git] / include / asm-arm / arch-imx / gpio.h
blob486023263f329d9fd4213ba06f25a60d5f77a991
1 #ifndef _IMX_GPIO_H
3 #include <asm/arch/imx-regs.h>
5 #define IMX_GPIO_ALLOC_MODE_NORMAL 0
6 #define IMX_GPIO_ALLOC_MODE_NO_ALLOC 1
7 #define IMX_GPIO_ALLOC_MODE_TRY_ALLOC 2
8 #define IMX_GPIO_ALLOC_MODE_ALLOC_ONLY 4
9 #define IMX_GPIO_ALLOC_MODE_RELEASE 8
11 extern int imx_gpio_request(unsigned gpio, const char *label);
13 extern void imx_gpio_free(unsigned gpio);
15 extern int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
16 int alloc_mode, const char *label);
18 extern int imx_gpio_direction_input(unsigned gpio);
20 extern int imx_gpio_direction_output(unsigned gpio, int value);
22 extern void __imx_gpio_set_value(unsigned gpio, int value);
24 static inline int imx_gpio_get_value(unsigned gpio)
26 return SSR(gpio >> GPIO_PORT_SHIFT) & (1 << (gpio & GPIO_PIN_MASK));
29 static inline void imx_gpio_set_value_inline(unsigned gpio, int value)
31 unsigned long flags;
33 raw_local_irq_save(flags);
34 if(value)
35 DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK));
36 else
37 DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK));
38 raw_local_irq_restore(flags);
41 static inline void imx_gpio_set_value(unsigned gpio, int value)
43 if(__builtin_constant_p(gpio))
44 imx_gpio_set_value_inline(gpio, value);
45 else
46 __imx_gpio_set_value(gpio, value);
49 extern int imx_gpio_to_irq(unsigned gpio);
51 extern int imx_irq_to_gpio(unsigned irq);
53 /*-------------------------------------------------------------------------*/
55 /* Wrappers for "new style" GPIO calls. These calls i.MX specific versions
56 * to allow future extension of GPIO logic.
59 static inline int gpio_request(unsigned gpio, const char *label)
61 return imx_gpio_request(gpio, label);
64 static inline void gpio_free(unsigned gpio)
66 imx_gpio_free(gpio);
69 static inline int gpio_direction_input(unsigned gpio)
71 return imx_gpio_direction_input(gpio);
74 static inline int gpio_direction_output(unsigned gpio, int value)
76 return imx_gpio_direction_output(gpio, value);
79 static inline int gpio_get_value(unsigned gpio)
81 return imx_gpio_get_value(gpio);
84 static inline void gpio_set_value(unsigned gpio, int value)
86 imx_gpio_set_value(gpio, value);
89 #include <asm-generic/gpio.h> /* cansleep wrappers */
91 static inline int gpio_to_irq(unsigned gpio)
93 return imx_gpio_to_irq(gpio);
96 static inline int irq_to_gpio(unsigned irq)
98 return imx_irq_to_gpio(irq);
102 #endif