blob: 913e5752569f1c70f7c3cb6315af0d3514a22c92 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/linux/mmc/host.h
3 *
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.
7 *
8 * Host driver specific definitions.
9 */
10#ifndef LINUX_MMC_HOST_H
11#define LINUX_MMC_HOST_H
12
13#include <linux/mmc/mmc.h>
14
15struct mmc_ios {
16 unsigned int clock; /* clock rate */
17 unsigned short vdd;
18
19#define MMC_VDD_150 0
20#define MMC_VDD_155 1
21#define MMC_VDD_160 2
22#define MMC_VDD_165 3
23#define MMC_VDD_170 4
24#define MMC_VDD_180 5
25#define MMC_VDD_190 6
26#define MMC_VDD_200 7
27#define MMC_VDD_210 8
28#define MMC_VDD_220 9
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
43
44 unsigned char bus_mode; /* command output mode */
45
46#define MMC_BUSMODE_OPENDRAIN 1
47#define MMC_BUSMODE_PUSHPULL 2
48
Pierre Ossman865e9f12005-09-03 16:45:02 +010049 unsigned char chip_select; /* SPI chip select */
50
51#define MMC_CS_DONTCARE 0
52#define MMC_CS_HIGH 1
53#define MMC_CS_LOW 2
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 unsigned char power_mode; /* power supply mode */
56
57#define MMC_POWER_OFF 0
58#define MMC_POWER_UP 1
59#define MMC_POWER_ON 2
Pierre Ossmanf2182782005-09-06 15:18:55 -070060
61 unsigned char bus_width; /* data bus width */
62
63#define MMC_BUS_WIDTH_1 0
64#define MMC_BUS_WIDTH_4 2
Linus Torvalds1da177e2005-04-16 15:20:36 -070065};
66
67struct mmc_host_ops {
68 void (*request)(struct mmc_host *host, struct mmc_request *req);
69 void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
Pierre Ossmana00fc092005-09-06 15:18:52 -070070 int (*get_ro)(struct mmc_host *host);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071};
72
73struct mmc_card;
74struct device;
75
76struct mmc_host {
Greg Kroah-Hartmanfcaf71f2006-09-12 17:00:10 +020077 struct device *parent;
78 struct device class_dev;
Russell Kingdce77372005-08-19 09:42:52 +010079 int index;
David Brownellf57b2252006-09-03 06:43:33 -070080 const struct mmc_host_ops *ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 unsigned int f_min;
82 unsigned int f_max;
83 u32 ocr_avail;
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Pierre Ossmanf2182782005-09-06 15:18:55 -070085 unsigned long caps; /* Host capabilities */
86
87#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
Russell Kingdb53f282006-08-30 15:14:56 +010088#define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */
Russell King42431ac2006-09-24 10:44:09 +010089#define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */
Pierre Ossmanf2182782005-09-06 15:18:55 -070090
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 /* host specific block data */
92 unsigned int max_seg_size; /* see blk_queue_max_segment_size */
93 unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */
94 unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 unsigned short unused;
Pierre Ossman55db8902006-11-21 17:55:45 +010096 unsigned int max_req_size; /* maximum number of bytes in one req */
Pierre Ossmanfe4a3c72006-11-21 17:54:23 +010097 unsigned int max_blk_size; /* maximum size of one mmc block */
Pierre Ossman55db8902006-11-21 17:55:45 +010098 unsigned int max_blk_count; /* maximum number of blocks in one req */
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100 /* private data */
101 struct mmc_ios ios; /* current io bus settings */
102 u32 ocr; /* the current OCR setting */
103
Pierre Ossman335eadf2005-09-06 15:18:50 -0700104 unsigned int mode; /* current card mode of host */
105#define MMC_MODE_MMC 0
106#define MMC_MODE_SD 1
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 struct list_head cards; /* devices attached to this host */
109
110 wait_queue_head_t wq;
Pierre Ossmanf22ee4e2006-12-26 15:11:23 +0100111 spinlock_t lock; /* claimed lock */
112 unsigned int claimed:1; /* host exclusively claimed */
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 struct mmc_card *card_selected; /* the selected MMC card */
115
David Howellsc4028952006-11-22 14:57:56 +0000116 struct delayed_work detect;
Russell King01357dc2005-09-08 22:46:00 +0100117
118 unsigned long private[0] ____cacheline_aligned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119};
120
121extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
122extern int mmc_add_host(struct mmc_host *);
123extern void mmc_remove_host(struct mmc_host *);
124extern void mmc_free_host(struct mmc_host *);
125
Russell King01357dc2005-09-08 22:46:00 +0100126static inline void *mmc_priv(struct mmc_host *host)
127{
128 return (void *)host->private;
129}
130
Greg Kroah-Hartmanfcaf71f2006-09-12 17:00:10 +0200131#define mmc_dev(x) ((x)->parent)
Pierre Ossman11354d02007-01-14 01:41:45 +0100132#define mmc_classdev(x) (&(x)->class_dev)
Greg Kroah-Hartmanfcaf71f2006-09-12 17:00:10 +0200133#define mmc_hostname(x) ((x)->class_dev.bus_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Pavel Machek3bfffd92005-04-16 15:25:37 -0700135extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136extern int mmc_resume_host(struct mmc_host *);
137
Richard Purdie8dc00332005-09-08 17:53:01 +0100138extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
140
141#endif
142