1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
4  */
5 
6 #ifndef __ASM_ARCH_IMX_ESDHC_H
7 #define __ASM_ARCH_IMX_ESDHC_H
8 
9 #include <linux/types.h>
10 
11 enum wp_types {
12 	ESDHC_WP_NONE,		/* no WP, neither controller nor gpio */
13 	ESDHC_WP_CONTROLLER,	/* mmc controller internal WP */
14 	ESDHC_WP_GPIO,		/* external gpio pin for WP */
15 };
16 
17 enum cd_types {
18 	ESDHC_CD_NONE,		/* no CD, neither controller nor gpio */
19 	ESDHC_CD_CONTROLLER,	/* mmc controller internal CD */
20 	ESDHC_CD_GPIO,		/* external gpio pin for CD */
21 	ESDHC_CD_PERMANENT,	/* no CD, card permanently wired to host */
22 };
23 
24 /**
25  * struct esdhc_platform_data - platform data for esdhc on i.MX
26  *
27  * ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
28  *
29  * @wp_type:	type of write_protect method (see wp_types enum above)
30  * @cd_type:	type of card_detect method (see cd_types enum above)
31  */
32 
33 struct esdhc_platform_data {
34 	enum wp_types wp_type;
35 	enum cd_types cd_type;
36 	int max_bus_width;
37 	unsigned int delay_line;
38 	unsigned int tuning_step;       /* The delay cell steps in tuning procedure */
39 	unsigned int tuning_start_tap;	/* The start delay cell point in tuning procedure */
40 };
41 #endif /* __ASM_ARCH_IMX_ESDHC_H */
42