gpio.h

/*
 * File:         arch/blackfin/kernel/bfin_gpio.h
 * Based on:
 * Author:	 Michael Hennerich (hennerich@blackfin.uclinux.org)
 *
 * Created:
 * Description:
 *
 * Modified:
 *               Copyright 2004-2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#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 BF548_FAMILY
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 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__ */