include/linux/mmc/sdio_func.h

   1 /*
   2  *  include/linux/mmc/sdio_func.h
   3  *
   4  *  Copyright 2007-2008 Pierre Ossman
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or (at
   9  * your option) any later version.
  10  */
  11
  12 #ifndef MMC_SDIO_FUNC_H
  13 #define MMC_SDIO_FUNC_H
  14
  15 #include <linux/device.h>
  16 #include <linux/mod_devicetable.h>
  17
  18 struct mmc_card;
  19 struct sdio_func;
  20
  21 typedef void (sdio_irq_handler_t)(struct sdio_func *);
  22
  23 /*
  24  * SDIO function CIS tuple (unknown to the core)
  25  */
  26 struct sdio_func_tuple {
  27         struct sdio_func_tuple *next;
  28         unsigned char code;
  29         unsigned char size;
  30         unsigned char data[0];
  31 };
  32
  33 /*
  34  * SDIO function devices
  35  */
  36 struct sdio_func {
  37         struct mmc_card         *card;          /* the card this device belongs to */
  38         struct device           dev;            /* the device */
  39         sdio_irq_handler_t      *irq_handler;   /* IRQ callback */
  40         unsigned int            num;            /* function number */
  41
  42         unsigned char           class;          /* standard interface class */
  43         unsigned short          vendor;         /* vendor id */
  44         unsigned short          device;         /* device id */
  45
  46         unsigned                max_blksize;    /* maximum block size */
  47         unsigned                cur_blksize;    /* current block size */
  48
  49         unsigned                enable_timeout; /* max enable timeout in msec */
  50
  51         unsigned int            state;          /* function state */
  52 #define SDIO_STATE_PRESENT      (1<<0)          /* present in sysfs */
  53
  54         u8                      tmpbuf[4];      /* DMA:able scratch buffer */
  55
  56         unsigned                num_info;       /* number of info strings */
  57         const char              **info;         /* info strings */
  58
  59         struct sdio_func_tuple *tuples;
  60 };
  61
  62 #define sdio_func_present(f)    ((f)->state & SDIO_STATE_PRESENT)
  63
  64 #define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
  65
  66 #define sdio_func_id(f)         (dev_name(&(f)->dev))
  67
  68 #define sdio_get_drvdata(f)     dev_get_drvdata(&(f)->dev)
  69 #define sdio_set_drvdata(f,d)   dev_set_drvdata(&(f)->dev, d)
  70
  71 /*
  72  * SDIO function device driver
  73  */
  74 struct sdio_driver {
  75         char *name;
  76         const struct sdio_device_id *id_table;
  77
  78         int (*probe)(struct sdio_func *, const struct sdio_device_id *);
  79         void (*remove)(struct sdio_func *);
  80
  81         struct device_driver drv;
  82 };
  83
  84 /**
  85  * SDIO_DEVICE - macro used to describe a specific SDIO device
  86  * @vend: the 16 bit manufacturer code
  87  * @dev: the 16 bit function id
  88  *
  89  * This macro is used to create a struct sdio_device_id that matches a
  90  * specific device. The class field will be set to SDIO_ANY_ID.
  91  */
  92 #define SDIO_DEVICE(vend,dev) \
  93         .class = SDIO_ANY_ID, \
  94         .vendor = (vend), .device = (dev)
  95
  96 /**
  97  * SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class
  98  * @dev_class: the 8 bit standard interface code
  99  *
 100  * This macro is used to create a struct sdio_device_id that matches a
 101  * specific standard SDIO function type.  The vendor and device fields will
 102  * be set to SDIO_ANY_ID.
 103  */
 104 #define SDIO_DEVICE_CLASS(dev_class) \
 105         .class = (dev_class), \
 106         .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
 107
 108 extern int sdio_register_driver(struct sdio_driver *);
 109 extern void sdio_unregister_driver(struct sdio_driver *);
 110
 111 /*
 112  * SDIO I/O operations
 113  */
 114 extern void sdio_claim_host(struct sdio_func *func);
 115 extern void sdio_release_host(struct sdio_func *func);
 116
 117 extern int sdio_enable_func(struct sdio_func *func);
 118 extern int sdio_disable_func(struct sdio_func *func);
 119
 120 extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
 121
 122 extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
 123 extern int sdio_release_irq(struct sdio_func *func);
 124
 125 extern unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz);
 126
 127 extern u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret);
 128 extern u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret);
 129 extern u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret);
 130
 131 extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
 132         unsigned int addr, int count);
 133 extern int sdio_readsb(struct sdio_func *func, void *dst,
 134         unsigned int addr, int count);
 135
 136 extern void sdio_writeb(struct sdio_func *func, u8 b,
 137         unsigned int addr, int *err_ret);
 138 extern void sdio_writew(struct sdio_func *func, u16 b,
 139         unsigned int addr, int *err_ret);
 140 extern void sdio_writel(struct sdio_func *func, u32 b,
 141         unsigned int addr, int *err_ret);
 142
 143 extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
 144         void *src, int count);
 145 extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
 146         void *src, int count);
 147
 148 extern unsigned char sdio_f0_readb(struct sdio_func *func,
 149         unsigned int addr, int *err_ret);
 150 extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
 151         unsigned int addr, int *err_ret);
 152
 153 #endif
 154