mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-26 13:29:54 +02:00
8b8591a6c2
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12567 3c298f89-4303-0410-b956-a3cf2f4a3e73
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
#ifndef _ATHEROS_GPIO_H_
|
|
#define _ATHEROS_GPIO_H_
|
|
|
|
#include "ar531x.h"
|
|
|
|
/* Common AR531X global variables */
|
|
/* extern u32 ar531x_gpio_intr_Mask; */
|
|
|
|
/* AR5312 exported routines */
|
|
#ifdef CONFIG_ATHEROS_AR5312
|
|
asmlinkage void ar5312_gpio_irq_dispatch(void);
|
|
#endif
|
|
|
|
/* AR5315 exported routines */
|
|
#ifdef CONFIG_ATHEROS_AR5315
|
|
asmlinkage void ar5315_gpio_irq_dispatch(void);
|
|
#endif
|
|
|
|
/*
|
|
* Wrappers for the generic GPIO layer
|
|
*/
|
|
|
|
/* Sets a gpio to input, or returns ENXIO for non-existent gpio */
|
|
static inline int gpio_direction_input(unsigned gpio) {
|
|
DO_AR5312( if (gpio > AR531X_NUM_GPIO) { \
|
|
return -ENXIO; \
|
|
} else { \
|
|
sysRegWrite(AR531X_GPIO_CR, \
|
|
sysRegRead(AR531X_GPIO_CR) | \
|
|
AR531X_GPIO_CR_I(gpio) ); \
|
|
return 0; \
|
|
} \
|
|
)
|
|
DO_AR5315( if (gpio > AR5315_NUM_GPIO) { \
|
|
return -ENXIO; \
|
|
} else { \
|
|
sysRegWrite(AR5315_GPIO_CR, \
|
|
( sysRegRead(AR5315_GPIO_CR) & \
|
|
~(AR5315_GPIO_CR_M(gpio)) ) | \
|
|
AR5315_GPIO_CR_I(gpio) ); \
|
|
return 0; \
|
|
} \
|
|
)
|
|
return -ENXIO;
|
|
}
|
|
|
|
/* Sets a gpio to output with value, or returns ENXIO for non-existent gpio */
|
|
static inline int gpio_direction_output(unsigned gpio, int value) {
|
|
DO_AR5312( if (gpio > AR531X_NUM_GPIO) { \
|
|
return -ENXIO; \
|
|
} else { \
|
|
sysRegWrite(AR531X_GPIO_DO, \
|
|
( (sysRegRead(AR531X_GPIO_DO) & \
|
|
~(1 << gpio) ) | \
|
|
((value!=0) << gpio)) ); \
|
|
sysRegWrite(AR531X_GPIO_CR, \
|
|
( sysRegRead(AR531X_GPIO_CR) & \
|
|
~(AR531X_GPIO_CR_M(gpio)) )); \
|
|
return 0; \
|
|
} \
|
|
)
|
|
DO_AR5315( if (gpio > AR5315_NUM_GPIO) { \
|
|
return -ENXIO; \
|
|
} else { \
|
|
sysRegWrite(AR5315_GPIO_DO, \
|
|
( (sysRegRead(AR5315_GPIO_DO) & \
|
|
~(1 << gpio)) | \
|
|
((value!=0) << gpio)) ); \
|
|
sysRegWrite(AR5315_GPIO_CR, \
|
|
sysRegRead(AR5315_GPIO_CR) | \
|
|
AR5315_GPIO_CR_O(gpio) ); \
|
|
return 0; \
|
|
} \
|
|
)
|
|
return -ENXIO;
|
|
}
|
|
|
|
/* Reads the gpio pin. Unchecked function */
|
|
static inline int gpio_get_value(unsigned gpio) {
|
|
DO_AR5312(return (sysRegRead(AR531X_GPIO_DI) & (1 << gpio));)
|
|
DO_AR5315(return (sysRegRead(AR5315_GPIO_DI) & (1 << gpio));)
|
|
return 0;
|
|
}
|
|
|
|
/* Writes to the gpio pin. Unchecked function */
|
|
static inline void gpio_set_value(unsigned gpio, int value) {
|
|
DO_AR5312( sysRegWrite(AR531X_GPIO_DO, \
|
|
( (sysRegRead(AR531X_GPIO_DO) & \
|
|
~(1 << gpio)) | \
|
|
((value!=0) << gpio)) ); \
|
|
)
|
|
DO_AR5315( sysRegWrite(AR5315_GPIO_DO, \
|
|
( (sysRegRead(AR5315_GPIO_DO) & \
|
|
~(1 << gpio)) | \
|
|
((value!=0) << gpio)) ); \
|
|
)
|
|
}
|
|
|
|
static inline int gpio_request(unsigned gpio, const char *label) {
|
|
return 0;
|
|
}
|
|
|
|
static inline void gpio_free(unsigned gpio) {
|
|
}
|
|
|
|
/* Returns IRQ to attach for gpio. Unchecked function */
|
|
static inline int gpio_to_irq(unsigned gpio) {
|
|
return AR531X_GPIO_IRQ(gpio);
|
|
}
|
|
|
|
/* Returns gpio for IRQ attached. Unchecked function */
|
|
static inline int irq_to_gpio(unsigned irq) {
|
|
return (irq - (AR531X_GPIO_IRQ(0)));
|
|
}
|
|
|
|
#include <asm-generic/gpio.h> /* cansleep wrappers */
|
|
|
|
#endif
|