2 * linux/include/linux/mmc/host.h
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * Host driver specific definitions.
10 #ifndef LINUX_MMC_HOST_H
11 #define LINUX_MMC_HOST_H
13 #include <linux/mmc/mmc.h>
16 unsigned int clock; /* clock rate */
29 #define MMC_VDD_230 10
30 #define MMC_VDD_240 11
31 #define MMC_VDD_250 12
32 #define MMC_VDD_260 13
33 #define MMC_VDD_270 14
34 #define MMC_VDD_280 15
35 #define MMC_VDD_290 16
36 #define MMC_VDD_300 17
37 #define MMC_VDD_310 18
38 #define MMC_VDD_320 19
39 #define MMC_VDD_330 20
40 #define MMC_VDD_340 21
41 #define MMC_VDD_350 22
42 #define MMC_VDD_360 23
44 unsigned char bus_mode; /* command output mode */
46 #define MMC_BUSMODE_OPENDRAIN 1
47 #define MMC_BUSMODE_PUSHPULL 2
49 unsigned char chip_select; /* SPI chip select */
51 #define MMC_CS_DONTCARE 0
55 unsigned char power_mode; /* power supply mode */
57 #define MMC_POWER_OFF 0
58 #define MMC_POWER_UP 1
59 #define MMC_POWER_ON 2
63 void (*request)(struct mmc_host *host, struct mmc_request *req);
64 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
72 struct class_device class_dev;
74 struct mmc_host_ops *ops;
79 /* host specific block data */
80 unsigned int max_seg_size; /* see blk_queue_max_segment_size */
81 unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */
82 unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */
83 unsigned short max_sectors; /* see blk_queue_max_sectors */
84 unsigned short unused;
87 struct mmc_ios ios; /* current io bus settings */
88 u32 ocr; /* the current OCR setting */
90 struct list_head cards; /* devices attached to this host */
93 spinlock_t lock; /* card_busy lock */
94 struct mmc_card *card_busy; /* the MMC card claiming host */
95 struct mmc_card *card_selected; /* the selected MMC card */
97 struct work_struct detect;
100 extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
101 extern int mmc_add_host(struct mmc_host *);
102 extern void mmc_remove_host(struct mmc_host *);
103 extern void mmc_free_host(struct mmc_host *);
105 #define mmc_priv(x) ((void *)((x) + 1))
106 #define mmc_dev(x) ((x)->dev)
107 #define mmc_hostname(x) ((x)->class_dev.class_id)
109 extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
110 extern int mmc_resume_host(struct mmc_host *);
112 extern void mmc_detect_change(struct mmc_host *);
113 extern void mmc_request_done(struct mmc_host *, struct mmc_request *);