include/linux/mmc/card.h

   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
  15 struct 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
  26 struct 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
  42 struct mmc_ext_csd {
  43         unsigned int            hs_max_dtr;
  44         unsigned int            sectors;
  45 };
  46
  47 struct 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
  54 struct sd_switch_caps {
  55         unsigned int            hs_max_dtr;
  56 };
  57
  58 struct mmc_host;
  59
  60 /*
  61  * MMC device
  62  */
  63 struct 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  */
 108 struct 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
 116 extern int mmc_register_driver(struct mmc_driver *);
 117 extern void mmc_unregister_driver(struct mmc_driver *);
 118
 119 #endif