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/mmc.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 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
  49 struct mmc_host;
  50
  51 /*
  52  * MMC device
  53  */
  54 struct 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  */
  95 struct 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
 103 extern int mmc_register_driver(struct mmc_driver *);
 104 extern void mmc_unregister_driver(struct mmc_driver *);
 105
 106 static 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