tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/core.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 mmc_ext_csd {
43 unsigned int hs_max_dtr;
44 unsigned int sectors;
45};
46
47struct sd_scr {
48 unsigned char sda_vsn;
49 unsigned char bus_widths;
50#define SD_SCR_BUS_WIDTH_1 (1<<0)
51#define SD_SCR_BUS_WIDTH_4 (1<<2)
52};
53
54struct sd_switch_caps {
55 unsigned int hs_max_dtr;
56};
57
58struct mmc_host;
59
60/*
61 * MMC device
62 */
63struct mmc_card {
64 struct mmc_host *host; /* the host this device belongs to */
65 struct device dev; /* the device */
66 unsigned int rca; /* relative card address of device */
67 unsigned int type; /* card type */
68#define MMC_TYPE_MMC 0 /* MMC card */
69#define MMC_TYPE_SD 1 /* SD card */
70 unsigned int state; /* (our) card state */
71#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
72#define MMC_STATE_READONLY (1<<1) /* card is read-only */
73#define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
74#define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
75 u32 raw_cid[4]; /* raw card CID */
76 u32 raw_csd[4]; /* raw card CSD */
77 u32 raw_scr[2]; /* raw card SCR */
78 struct mmc_cid cid; /* card identification */
79 struct mmc_csd csd; /* card specific */
80 struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */
81 struct sd_scr scr; /* extra SD information */
82 struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
83};
84
85#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
86#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
87
88#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
89#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
90#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED)
91#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
92
93#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
94#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
95#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
96#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
97
98#define mmc_card_name(c) ((c)->cid.prod_name)
99#define mmc_card_id(c) ((c)->dev.bus_id)
100
101#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
102#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
103#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
104
105/*
106 * MMC device driver (e.g., Flash card, I/O card...)
107 */
108struct mmc_driver {
109 struct device_driver drv;
110 int (*probe)(struct mmc_card *);
111 void (*remove)(struct mmc_card *);
112 int (*suspend)(struct mmc_card *, pm_message_t);
113 int (*resume)(struct mmc_card *);
114};
115
116extern int mmc_register_driver(struct mmc_driver *);
117extern void mmc_unregister_driver(struct mmc_driver *);
118
119#endif