gpio-cfg-helpers.h

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/* linux/arch/arm/plat-samsung/include/plat/gpio-cfg-helper.h
 *
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *  http://armlinux.simtec.co.uk/
 *  Ben Dooks <[email protected]>
 *
 * Samsung Platform - GPIO pin configuration helper definitions
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

/* This is meant for core cpu support, machine or other driver files
 * should not be including this header.
 */

#ifndef __PLAT_GPIO_CFG_HELPERS_H
#define __PLAT_GPIO_CFG_HELPERS_H __FILE__

/* As a note, all gpio configuration functions are entered exclusively, either
 * with the relevant lock held or the system prevented from doing anything else
 * by disabling interrupts.
*/

static inline int samsung_gpio_do_setcfg(struct samsung_gpio_chip *chip,
                     unsigned int off, unsigned int config)
{
    return (chip->config->set_config)(chip, off, config);
}

static inline unsigned samsung_gpio_do_getcfg(struct samsung_gpio_chip *chip,
                          unsigned int off)
{
    return (chip->config->get_config)(chip, off);
}

static inline int samsung_gpio_do_setpull(struct samsung_gpio_chip *chip,
                      unsigned int off, samsung_gpio_pull_t pull)
{
    return (chip->config->set_pull)(chip, off, pull);
}

static inline samsung_gpio_pull_t samsung_gpio_do_getpull(struct samsung_gpio_chip *chip,
                              unsigned int off)
{
    return chip->config->get_pull(chip, off);
}

/* Pull-{up,down} resistor controls.
 *
 * S3C2410,S3C2440 = Pull-UP,
 * S3C2412,S3C2413 = Pull-Down
 * S3C6400,S3C6410 = Pull-Both [None,Down,Up,Undef]
 * S3C2443 = Pull-Both [not same as S3C6400]
 */

extern int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
                    unsigned int off, samsung_gpio_pull_t pull);

extern int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
                      unsigned int off, samsung_gpio_pull_t pull);

extern int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
                       unsigned int off, samsung_gpio_pull_t pull);

extern samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
                               unsigned int off);

extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
                            unsigned int off);

extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
                              unsigned int off);

extern int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
                unsigned int off, samsung_gpio_pull_t pull);

extern samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
                        unsigned int off);

#endif /* __PLAT_GPIO_CFG_HELPERS_H */