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1da177e4 LT |
1 | /* |
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 | ||
15 | struct 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 | ||
865e9f13 PO |
49 | 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 | ||
1da177e4 LT |
55 | 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 | |
f218278a PO |
60 | |
61 | unsigned char bus_width; /* data bus width */ | |
62 | ||
63 | #define MMC_BUS_WIDTH_1 0 | |
64 | #define MMC_BUS_WIDTH_4 2 | |
1da177e4 LT |
65 | }; |
66 | ||
67 | struct 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); | |
a00fc090 | 70 | int (*get_ro)(struct mmc_host *host); |
1da177e4 LT |
71 | }; |
72 | ||
73 | struct mmc_card; | |
74 | struct device; | |
75 | ||
76 | struct mmc_host { | |
fcaf71fd GKH |
77 | struct device *parent; |
78 | struct device class_dev; | |
dce77377 | 79 | int index; |
f57b225e | 80 | const struct mmc_host_ops *ops; |
1da177e4 LT |
81 | unsigned int f_min; |
82 | unsigned int f_max; | |
83 | u32 ocr_avail; | |
1da177e4 | 84 | |
f218278a PO |
85 | unsigned long caps; /* Host capabilities */ |
86 | ||
87 | #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ | |
db53f28b | 88 | #define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */ |
42431acb | 89 | #define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */ |
f218278a | 90 | |
1da177e4 LT |
91 | /* 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 */ | |
1da177e4 | 95 | unsigned short unused; |
55db890a | 96 | unsigned int max_req_size; /* maximum number of bytes in one req */ |
fe4a3c7a | 97 | unsigned int max_blk_size; /* maximum size of one mmc block */ |
55db890a | 98 | unsigned int max_blk_count; /* maximum number of blocks in one req */ |
1da177e4 LT |
99 | |
100 | /* private data */ | |
101 | struct mmc_ios ios; /* current io bus settings */ | |
102 | u32 ocr; /* the current OCR setting */ | |
103 | ||
335eadf2 PO |
104 | unsigned int mode; /* current card mode of host */ |
105 | #define MMC_MODE_MMC 0 | |
106 | #define MMC_MODE_SD 1 | |
107 | ||
1da177e4 LT |
108 | struct list_head cards; /* devices attached to this host */ |
109 | ||
110 | wait_queue_head_t wq; | |
f22ee4ed PO |
111 | spinlock_t lock; /* claimed lock */ |
112 | unsigned int claimed:1; /* host exclusively claimed */ | |
113 | ||
1da177e4 LT |
114 | struct mmc_card *card_selected; /* the selected MMC card */ |
115 | ||
c4028958 | 116 | struct delayed_work detect; |
01357dca RK |
117 | |
118 | unsigned long private[0] ____cacheline_aligned; | |
1da177e4 LT |
119 | }; |
120 | ||
121 | extern struct mmc_host *mmc_alloc_host(int extra, struct device *); | |
122 | extern int mmc_add_host(struct mmc_host *); | |
123 | extern void mmc_remove_host(struct mmc_host *); | |
124 | extern void mmc_free_host(struct mmc_host *); | |
125 | ||
01357dca RK |
126 | static inline void *mmc_priv(struct mmc_host *host) |
127 | { | |
128 | return (void *)host->private; | |
129 | } | |
130 | ||
fcaf71fd | 131 | #define mmc_dev(x) ((x)->parent) |
11354d03 | 132 | #define mmc_classdev(x) (&(x)->class_dev) |
fcaf71fd | 133 | #define mmc_hostname(x) ((x)->class_dev.bus_id) |
1da177e4 | 134 | |
3bfffd97 | 135 | extern int mmc_suspend_host(struct mmc_host *, pm_message_t); |
1da177e4 LT |
136 | extern int mmc_resume_host(struct mmc_host *); |
137 | ||
8dc00335 | 138 | extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
1da177e4 LT |
139 | extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
140 | ||
141 | #endif | |
142 |