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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 | ||
aaac1b47 | 13 | #include <linux/mmc/core.h> |
1da177e4 LT |
14 | |
15 | struct mmc_ios { | |
16 | unsigned int clock; /* clock rate */ | |
17 | unsigned short vdd; | |
18 | ||
4be34c99 | 19 | /* vdd stores the bit number of the selected voltage range from below. */ |
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20 | |
21 | unsigned char bus_mode; /* command output mode */ | |
22 | ||
23 | #define MMC_BUSMODE_OPENDRAIN 1 | |
24 | #define MMC_BUSMODE_PUSHPULL 2 | |
25 | ||
865e9f13 PO |
26 | unsigned char chip_select; /* SPI chip select */ |
27 | ||
28 | #define MMC_CS_DONTCARE 0 | |
29 | #define MMC_CS_HIGH 1 | |
30 | #define MMC_CS_LOW 2 | |
31 | ||
1da177e4 LT |
32 | unsigned char power_mode; /* power supply mode */ |
33 | ||
34 | #define MMC_POWER_OFF 0 | |
35 | #define MMC_POWER_UP 1 | |
36 | #define MMC_POWER_ON 2 | |
f218278a PO |
37 | |
38 | unsigned char bus_width; /* data bus width */ | |
39 | ||
40 | #define MMC_BUS_WIDTH_1 0 | |
41 | #define MMC_BUS_WIDTH_4 2 | |
cd9277c0 PO |
42 | |
43 | unsigned char timing; /* timing specification used */ | |
44 | ||
45 | #define MMC_TIMING_LEGACY 0 | |
46 | #define MMC_TIMING_MMC_HS 1 | |
47 | #define MMC_TIMING_SD_HS 2 | |
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48 | }; |
49 | ||
50 | struct mmc_host_ops { | |
51 | void (*request)(struct mmc_host *host, struct mmc_request *req); | |
52 | void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); | |
a00fc090 | 53 | int (*get_ro)(struct mmc_host *host); |
17b759af | 54 | void (*enable_sdio_irq)(struct mmc_host *host, int enable); |
1da177e4 LT |
55 | }; |
56 | ||
57 | struct mmc_card; | |
58 | struct device; | |
59 | ||
60 | struct mmc_host { | |
fcaf71fd GKH |
61 | struct device *parent; |
62 | struct device class_dev; | |
dce77377 | 63 | int index; |
f57b225e | 64 | const struct mmc_host_ops *ops; |
1da177e4 LT |
65 | unsigned int f_min; |
66 | unsigned int f_max; | |
67 | u32 ocr_avail; | |
1da177e4 | 68 | |
55556da0 | 69 | #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ |
f74d132c PO |
70 | #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |
71 | #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ | |
72 | #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ | |
73 | #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ | |
74 | #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ | |
75 | #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ | |
76 | #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ | |
77 | #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ | |
78 | #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ | |
79 | #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ | |
80 | #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ | |
81 | #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ | |
82 | #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ | |
83 | #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ | |
84 | #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ | |
85 | #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ | |
86 | ||
f218278a PO |
87 | unsigned long caps; /* Host capabilities */ |
88 | ||
89 | #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ | |
db53f28b | 90 | #define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */ |
255d01af PO |
91 | #define MMC_CAP_MMC_HIGHSPEED (1 << 2) /* Can do MMC high-speed timing */ |
92 | #define MMC_CAP_SD_HIGHSPEED (1 << 3) /* Can do SD high-speed timing */ | |
17b759af | 93 | #define MMC_CAP_SDIO_IRQ (1 << 4) /* Can signal pending SDIO IRQs */ |
97018580 | 94 | #define MMC_CAP_SPI (1 << 5) /* Talks only SPI protocols */ |
f218278a | 95 | |
1da177e4 LT |
96 | /* host specific block data */ |
97 | unsigned int max_seg_size; /* see blk_queue_max_segment_size */ | |
98 | unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */ | |
99 | unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */ | |
1da177e4 | 100 | unsigned short unused; |
55db890a | 101 | unsigned int max_req_size; /* maximum number of bytes in one req */ |
fe4a3c7a | 102 | unsigned int max_blk_size; /* maximum size of one mmc block */ |
55db890a | 103 | unsigned int max_blk_count; /* maximum number of blocks in one req */ |
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104 | |
105 | /* private data */ | |
7ea239d9 PO |
106 | spinlock_t lock; /* lock for claim and bus ops */ |
107 | ||
1da177e4 LT |
108 | struct mmc_ios ios; /* current io bus settings */ |
109 | u32 ocr; /* the current OCR setting */ | |
110 | ||
97018580 DB |
111 | /* group bitfields together to minimize padding */ |
112 | unsigned int use_spi_crc:1; | |
113 | unsigned int claimed:1; /* host exclusively claimed */ | |
114 | unsigned int bus_dead:1; /* bus has been released */ | |
115 | #ifdef CONFIG_MMC_DEBUG | |
116 | unsigned int removed:1; /* host is being removed */ | |
117 | #endif | |
118 | ||
335eadf2 PO |
119 | unsigned int mode; /* current card mode of host */ |
120 | #define MMC_MODE_MMC 0 | |
121 | #define MMC_MODE_SD 1 | |
122 | ||
b855885e | 123 | struct mmc_card *card; /* device attached to this host */ |
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124 | |
125 | wait_queue_head_t wq; | |
f22ee4ed | 126 | |
c4028958 | 127 | struct delayed_work detect; |
01357dca | 128 | |
7ea239d9 PO |
129 | const struct mmc_bus_ops *bus_ops; /* current bus driver */ |
130 | unsigned int bus_refs; /* reference counter */ | |
7ea239d9 | 131 | |
d1496c39 NP |
132 | unsigned int sdio_irqs; |
133 | struct task_struct *sdio_irq_thread; | |
134 | atomic_t sdio_irq_thread_abort; | |
135 | ||
01357dca | 136 | unsigned long private[0] ____cacheline_aligned; |
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137 | }; |
138 | ||
139 | extern struct mmc_host *mmc_alloc_host(int extra, struct device *); | |
140 | extern int mmc_add_host(struct mmc_host *); | |
141 | extern void mmc_remove_host(struct mmc_host *); | |
142 | extern void mmc_free_host(struct mmc_host *); | |
143 | ||
01357dca RK |
144 | static inline void *mmc_priv(struct mmc_host *host) |
145 | { | |
146 | return (void *)host->private; | |
147 | } | |
148 | ||
97018580 DB |
149 | #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) |
150 | ||
fcaf71fd | 151 | #define mmc_dev(x) ((x)->parent) |
11354d03 | 152 | #define mmc_classdev(x) (&(x)->class_dev) |
fcaf71fd | 153 | #define mmc_hostname(x) ((x)->class_dev.bus_id) |
1da177e4 | 154 | |
3bfffd97 | 155 | extern int mmc_suspend_host(struct mmc_host *, pm_message_t); |
1da177e4 LT |
156 | extern int mmc_resume_host(struct mmc_host *); |
157 | ||
8dc00335 | 158 | extern void mmc_detect_change(struct mmc_host *, unsigned long delay); |
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159 | extern void mmc_request_done(struct mmc_host *, struct mmc_request *); |
160 | ||
17b759af NP |
161 | static inline void mmc_signal_sdio_irq(struct mmc_host *host) |
162 | { | |
163 | host->ops->enable_sdio_irq(host, 0); | |
164 | wake_up_process(host->sdio_irq_thread); | |
165 | } | |
166 | ||
1da177e4 LT |
167 | #endif |
168 |