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linux/arch/blackfin/include/asm/gpio.h
Michael Hennerich 621dd24743 Blackfin: bf538: add support for extended GPIO banks 
The GPIOs on ports C/D/E on the BF538/BF539 do not behave the same way as
the other ports on the part and the same way as all other Blackfin parts.
The MMRs are programmed slightly different and they cannot be used to
generate interrupts or wakeup a sleeping system.  Since these guys don't
fit into the existing code, create a simple gpiolib driver for them.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:05 -05:00

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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__
/***********************************************************
*
* 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);
#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);
}
#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);
}
#include <asm-generic/gpio.h> /* cansleep wrappers */
#endif /* !CONFIG_GPIOLIB */
#include <asm/irq.h>
static inline int gpio_to_irq(unsigned gpio)
{
if (likely(gpio < MAX_BLACKFIN_GPIOS))
return gpio + GPIO_IRQ_BASE;
return -EINVAL;
}
static inline int irq_to_gpio(unsigned irq)
{
return (irq - GPIO_IRQ_BASE);
}
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_BLACKFIN_GPIO_H__ */
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