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kernel add
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/*
* Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
*
* 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; version 2
* of the License.
*/
#ifndef __ASM_ARCH_IMX_ESDHC_H
#define __ASM_ARCH_IMX_ESDHC_H
#include <linux/types.h>
enum wp_types {
ESDHC_WP_NONE, /* no WP, neither controller nor gpio */
ESDHC_WP_CONTROLLER, /* mmc controller internal WP */
ESDHC_WP_GPIO, /* external gpio pin for WP */
};
enum cd_types {
ESDHC_CD_NONE, /* no CD, neither controller nor gpio */
ESDHC_CD_CONTROLLER, /* mmc controller internal CD */
ESDHC_CD_GPIO, /* external gpio pin for CD */
ESDHC_CD_PERMANENT, /* no CD, card permanently wired to host */
};
/**
* struct esdhc_platform_data - platform data for esdhc on i.MX
*
* ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
*
* @wp_gpio: gpio for write_protect
* @cd_gpio: gpio for card_detect interrupt
* @wp_type: type of write_protect method (see wp_types enum above)
* @cd_type: type of card_detect method (see cd_types enum above)
* @support_vsel: indicate it supports 1.8v switching
*/
struct esdhc_platform_data {
unsigned int wp_gpio;
unsigned int cd_gpio;
enum wp_types wp_type;
enum cd_types cd_type;
int max_bus_width;
bool support_vsel;
unsigned int delay_line;
unsigned int tuning_step; /* The delay cell steps in tuning procedure */
};
#endif /* __ASM_ARCH_IMX_ESDHC_H */
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