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linux/arch/blackfin/include/asm/gpio.h
Joachim Eastwood 7f4f69f991 Blackfin: GPIO: implement to_irq handler 
This makes it possible to support IRQs coming from off-chip GPIO
controllers.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-03-09 00:30:52 -05:00

311 lines
7.4 KiB
C
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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 GPIO_0 0
#define GPIO_1 1
#define GPIO_2 2
#define GPIO_3 3
#define GPIO_4 4
#define GPIO_5 5
#define GPIO_6 6
#define GPIO_7 7
#define GPIO_8 8
#define GPIO_9 9
#define GPIO_10 10
#define GPIO_11 11
#define GPIO_12 12
#define GPIO_13 13
#define GPIO_14 14
#define GPIO_15 15
#define GPIO_16 16
#define GPIO_17 17
#define GPIO_18 18
#define GPIO_19 19
#define GPIO_20 20
#define GPIO_21 21
#define GPIO_22 22
#define GPIO_23 23
#define GPIO_24 24
#define GPIO_25 25
#define GPIO_26 26
#define GPIO_27 27
#define GPIO_28 28
#define GPIO_29 29
#define GPIO_30 30
#define GPIO_31 31
#define GPIO_32 32
#define GPIO_33 33
#define GPIO_34 34
#define GPIO_35 35
#define GPIO_36 36
#define GPIO_37 37
#define GPIO_38 38
#define GPIO_39 39
#define GPIO_40 40
#define GPIO_41 41
#define GPIO_42 42
#define GPIO_43 43
#define GPIO_44 44
#define GPIO_45 45
#define GPIO_46 46
#define GPIO_47 47
#define PERIPHERAL_USAGE 1
#define GPIO_USAGE 0
#ifndef __ASSEMBLY__
#include <linux/compiler.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 :
**************************************************************/
#ifndef CONFIG_BF54x
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);
#endif
#ifdef CONFIG_PM
unsigned int bfin_pm_standby_setup(void);
void bfin_pm_standby_restore(void);
void bfin_gpio_pm_hibernate_restore(void);
void bfin_gpio_pm_hibernate_suspend(void);
#ifndef CONFIG_BF54x
#define PM_WAKE_RISING 0x1
#define PM_WAKE_FALLING 0x2
#define PM_WAKE_HIGH 0x4
#define PM_WAKE_LOW 0x8
#define PM_WAKE_BOTH_EDGES (PM_WAKE_RISING | PM_WAKE_FALLING)
#define PM_WAKE_IGNORE 0xF0
int gpio_pm_wakeup_request(unsigned gpio, unsigned char type);
void gpio_pm_wakeup_free(unsigned gpio);
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 /*CONFIG_BF54x*/
#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_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_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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