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/*
* Copyright 2006-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ARCH_BLACKFIN_GPIO_H__
#define __ARCH_BLACKFIN_GPIO_H__
#define gpio_bank(x) ((x) >> 4)
#define gpio_bit(x) (1<<((x) & 0xF))
#define gpio_sub_n(x) ((x) & 0xF)
#define GPIO_BANKSIZE 16
#define GPIO_BANK_NUM DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
#include <mach/gpio.h>
#define PERIPHERAL_USAGE 1
#define GPIO_USAGE 0
#ifndef BFIN_GPIO_PINT
# define BFIN_GPIO_PINT 0
#endif
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
#include <linux/gpio.h>
/***********************************************************
*
* FUNCTIONS: Blackfin General Purpose Ports Access Functions
*
* INPUTS/OUTPUTS:
* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
*
*
* DESCRIPTION: These functions abstract direct register access
* to Blackfin processor General Purpose
* Ports Regsiters
*
* CAUTION: These functions do not belong to the GPIO Driver API
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/
#if !BFIN_GPIO_PINT
void set_gpio_dir(unsigned, unsigned short);
void set_gpio_inen(unsigned, unsigned short);
void set_gpio_polar(unsigned, unsigned short);
void set_gpio_edge(unsigned, unsigned short);
void set_gpio_both(unsigned, unsigned short);
void set_gpio_data(unsigned, unsigned short);
void set_gpio_maska(unsigned, unsigned short);
void set_gpio_maskb(unsigned, unsigned short);
void set_gpio_toggle(unsigned);
void set_gpiop_dir(unsigned, unsigned short);
void set_gpiop_inen(unsigned, unsigned short);
void set_gpiop_polar(unsigned, unsigned short);
void set_gpiop_edge(unsigned, unsigned short);
void set_gpiop_both(unsigned, unsigned short);
void set_gpiop_data(unsigned, unsigned short);
void set_gpiop_maska(unsigned, unsigned short);
void set_gpiop_maskb(unsigned, unsigned short);
unsigned short get_gpio_dir(unsigned);
unsigned short get_gpio_inen(unsigned);
unsigned short get_gpio_polar(unsigned);
unsigned short get_gpio_edge(unsigned);
unsigned short get_gpio_both(unsigned);
unsigned short get_gpio_maska(unsigned);
unsigned short get_gpio_maskb(unsigned);
unsigned short get_gpio_data(unsigned);
unsigned short get_gpiop_dir(unsigned);
unsigned short get_gpiop_inen(unsigned);
unsigned short get_gpiop_polar(unsigned);
unsigned short get_gpiop_edge(unsigned);
unsigned short get_gpiop_both(unsigned);
unsigned short get_gpiop_maska(unsigned);
unsigned short get_gpiop_maskb(unsigned);
unsigned short get_gpiop_data(unsigned);
struct gpio_port_t {
unsigned short data;
unsigned short dummy1;
unsigned short data_clear;
unsigned short dummy2;
unsigned short data_set;
unsigned short dummy3;
unsigned short toggle;
unsigned short dummy4;
unsigned short maska;
unsigned short dummy5;
unsigned short maska_clear;
unsigned short dummy6;
unsigned short maska_set;
unsigned short dummy7;
unsigned short maska_toggle;
unsigned short dummy8;
unsigned short maskb;
unsigned short dummy9;
unsigned short maskb_clear;
unsigned short dummy10;
unsigned short maskb_set;
unsigned short dummy11;
unsigned short maskb_toggle;
unsigned short dummy12;
unsigned short dir;
unsigned short dummy13;
unsigned short polar;
unsigned short dummy14;
unsigned short edge;
unsigned short dummy15;
unsigned short both;
unsigned short dummy16;
unsigned short inen;
};
#endif
#ifdef BFIN_SPECIAL_GPIO_BANKS
void bfin_special_gpio_free(unsigned gpio);
int bfin_special_gpio_request(unsigned gpio, const char *label);
# ifdef CONFIG_PM
void bfin_special_gpio_pm_hibernate_restore(void);
void bfin_special_gpio_pm_hibernate_suspend(void);
# endif
#endif
#ifdef CONFIG_PM
int bfin_pm_standby_ctrl(unsigned ctrl);
static inline int bfin_pm_standby_setup(void)
{
return bfin_pm_standby_ctrl(1);
}
static inline void bfin_pm_standby_restore(void)
{
bfin_pm_standby_ctrl(0);
}
void bfin_gpio_pm_hibernate_restore(void);
void bfin_gpio_pm_hibernate_suspend(void);
# if !BFIN_GPIO_PINT
int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
struct gpio_port_s {
unsigned short data;
unsigned short maska;
unsigned short maskb;
unsigned short dir;
unsigned short polar;
unsigned short edge;
unsigned short both;
unsigned short inen;
unsigned short fer;
unsigned short reserved;
unsigned short mux;
};
# endif
#endif /*CONFIG_PM*/
/***********************************************************
*
* FUNCTIONS: Blackfin GPIO Driver
*
* INPUTS/OUTPUTS:
* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
*
*
* DESCRIPTION: Blackfin GPIO Driver API
*
* CAUTION:
*************************************************************
* MODIFICATION HISTORY :
**************************************************************/
int bfin_gpio_request(unsigned gpio, const char *label);
void bfin_gpio_free(unsigned gpio);
int bfin_gpio_irq_request(unsigned gpio, const char *label);
void bfin_gpio_irq_free(unsigned gpio);
int bfin_gpio_direction_input(unsigned gpio);
int bfin_gpio_direction_output(unsigned gpio, int value);
int bfin_gpio_get_value(unsigned gpio);
void bfin_gpio_set_value(unsigned gpio, int value);
#include <asm/irq.h>
#include <asm/errno.h>
#ifdef CONFIG_GPIOLIB
#include <asm-generic/gpio.h> /* cansleep wrappers */
static inline int gpio_get_value(unsigned int gpio)
{
if (gpio < MAX_BLACKFIN_GPIOS)
return bfin_gpio_get_value(gpio);
else
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned int gpio, int value)
{
if (gpio < MAX_BLACKFIN_GPIOS)
bfin_gpio_set_value(gpio, value);
else
__gpio_set_value(gpio, value);
}
static inline int gpio_cansleep(unsigned int gpio)
{
return __gpio_cansleep(gpio);
}
static inline int gpio_to_irq(unsigned gpio)
{
return __gpio_to_irq(gpio);
}
#else /* !CONFIG_GPIOLIB */
static inline int gpio_request(unsigned gpio, const char *label)
{
return bfin_gpio_request(gpio, label);
}
static inline void gpio_free(unsigned gpio)
{
return bfin_gpio_free(gpio);
}
static inline int gpio_direction_input(unsigned gpio)
{
return bfin_gpio_direction_input(gpio);
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return bfin_gpio_direction_output(gpio, value);
}
static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
{
return -EINVAL;
}
static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
{
int err;
err = bfin_gpio_request(gpio, label);
if (err)
return err;
if (flags & GPIOF_DIR_IN)
err = bfin_gpio_direction_input(gpio);
else
err = bfin_gpio_direction_output(gpio,
(flags & GPIOF_INIT_HIGH) ? 1 : 0);
if (err)
bfin_gpio_free(gpio);
return err;
}
static inline int gpio_request_array(const struct gpio *array, size_t num)
{
int i, err;
for (i = 0; i < num; i++, array++) {
err = gpio_request_one(array->gpio, array->flags, array->label);
if (err)
goto err_free;
}
return 0;
err_free:
while (i--)
bfin_gpio_free((--array)->gpio);
return err;
}
static inline void gpio_free_array(const struct gpio *array, size_t num)
{
while (num--)
bfin_gpio_free((array++)->gpio);
}
static inline int __gpio_get_value(unsigned gpio)
{
return bfin_gpio_get_value(gpio);
}
static inline void __gpio_set_value(unsigned gpio, int value)
{
return bfin_gpio_set_value(gpio, value);
}
static inline int gpio_get_value(unsigned gpio)
{
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
return __gpio_set_value(gpio, value);
}
static inline int gpio_to_irq(unsigned gpio)
{
if (likely(gpio < MAX_BLACKFIN_GPIOS))
return gpio + GPIO_IRQ_BASE;
return -EINVAL;
}
#include <asm-generic/gpio.h> /* cansleep wrappers */
#endif /* !CONFIG_GPIOLIB */
static inline int irq_to_gpio(unsigned irq)
{
return (irq - GPIO_IRQ_BASE);
}
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_BLACKFIN_GPIO_H__ */
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