tjh.dev
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1/*
2 * linux/include/linux/mmc/card.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 * Card driver specific definitions.
9 */
10#ifndef LINUX_MMC_CARD_H
11#define LINUX_MMC_CARD_H
12
13#include <linux/mmc/mmc.h>
14
15struct mmc_cid {
16 unsigned int manfid;
17 char prod_name[8];
18 unsigned int serial;
19 unsigned short oemid;
20 unsigned short year;
21 unsigned char hwrev;
22 unsigned char fwrev;
23 unsigned char month;
24};
25
26struct mmc_csd {
27 unsigned char mmca_vsn;
28 unsigned short cmdclass;
29 unsigned short tacc_clks;
30 unsigned int tacc_ns;
31 unsigned int r2w_factor;
32 unsigned int max_dtr;
33 unsigned int read_blkbits;
34 unsigned int write_blkbits;
35 unsigned int capacity;
36 unsigned int read_partial:1,
37 read_misalign:1,
38 write_partial:1,
39 write_misalign:1;
40};
41
42struct sd_scr {
43 unsigned char sda_vsn;
44 unsigned char bus_widths;
45#define SD_SCR_BUS_WIDTH_1 (1<<0)
46#define SD_SCR_BUS_WIDTH_4 (1<<2)
47};
48
49struct mmc_host;
50
51/*
52 * MMC device
53 */
54struct mmc_card {
55 struct list_head node; /* node in hosts devices list */
56 struct mmc_host *host; /* the host this device belongs to */
57 struct device dev; /* the device */
58 unsigned int rca; /* relative card address of device */
59 unsigned int state; /* (our) card state */
60#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
61#define MMC_STATE_DEAD (1<<1) /* device no longer in stack */
62#define MMC_STATE_BAD (1<<2) /* unrecognised device */
63#define MMC_STATE_SDCARD (1<<3) /* is an SD card */
64#define MMC_STATE_READONLY (1<<4) /* card is read-only */
65 u32 raw_cid[4]; /* raw card CID */
66 u32 raw_csd[4]; /* raw card CSD */
67 u32 raw_scr[2]; /* raw card SCR */
68 struct mmc_cid cid; /* card identification */
69 struct mmc_csd csd; /* card specific */
70 struct sd_scr scr; /* extra SD information */
71};
72
73#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
74#define mmc_card_dead(c) ((c)->state & MMC_STATE_DEAD)
75#define mmc_card_bad(c) ((c)->state & MMC_STATE_BAD)
76#define mmc_card_sd(c) ((c)->state & MMC_STATE_SDCARD)
77#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
78
79#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
80#define mmc_card_set_dead(c) ((c)->state |= MMC_STATE_DEAD)
81#define mmc_card_set_bad(c) ((c)->state |= MMC_STATE_BAD)
82#define mmc_card_set_sd(c) ((c)->state |= MMC_STATE_SDCARD)
83#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
84
85#define mmc_card_name(c) ((c)->cid.prod_name)
86#define mmc_card_id(c) ((c)->dev.bus_id)
87
88#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
89#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
90#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
91
92/*
93 * MMC device driver (e.g., Flash card, I/O card...)
94 */
95struct mmc_driver {
96 struct device_driver drv;
97 int (*probe)(struct mmc_card *);
98 void (*remove)(struct mmc_card *);
99 int (*suspend)(struct mmc_card *, pm_message_t);
100 int (*resume)(struct mmc_card *);
101};
102
103extern int mmc_register_driver(struct mmc_driver *);
104extern void mmc_unregister_driver(struct mmc_driver *);
105
106static inline int mmc_card_claim_host(struct mmc_card *card)
107{
108 return __mmc_claim_host(card->host, card);
109}
110
111#define mmc_card_release_host(c) mmc_release_host((c)->host)
112
113#endif