tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; version 2
7 * of the License.
8 */
9
10#ifndef __ASM_ARCH_IMX_ESDHC_H
11#define __ASM_ARCH_IMX_ESDHC_H
12
13#include <linux/types.h>
14
15enum wp_types {
16 ESDHC_WP_NONE, /* no WP, neither controller nor gpio */
17 ESDHC_WP_CONTROLLER, /* mmc controller internal WP */
18 ESDHC_WP_GPIO, /* external gpio pin for WP */
19};
20
21enum cd_types {
22 ESDHC_CD_NONE, /* no CD, neither controller nor gpio */
23 ESDHC_CD_CONTROLLER, /* mmc controller internal CD */
24 ESDHC_CD_GPIO, /* external gpio pin for CD */
25 ESDHC_CD_PERMANENT, /* no CD, card permanently wired to host */
26};
27
28/**
29 * struct esdhc_platform_data - platform data for esdhc on i.MX
30 *
31 * ESDHC_WP(CD)_CONTROLLER type is not available on i.MX25/35.
32 *
33 * @wp_gpio: gpio for write_protect
34 * @cd_gpio: gpio for card_detect interrupt
35 * @wp_type: type of write_protect method (see wp_types enum above)
36 * @cd_type: type of card_detect method (see cd_types enum above)
37 * @support_vsel: indicate it supports 1.8v switching
38 */
39
40struct esdhc_platform_data {
41 unsigned int wp_gpio;
42 unsigned int cd_gpio;
43 enum wp_types wp_type;
44 enum cd_types cd_type;
45 int max_bus_width;
46 bool support_vsel;
47 unsigned int delay_line;
48 unsigned int tuning_step; /* The delay cell steps in tuning procedure */
49 unsigned int tuning_start_tap; /* The start delay cell point in tuning procedure */
50};
51#endif /* __ASM_ARCH_IMX_ESDHC_H */