Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /*
  2  *  include/linux/mmc/sdio_func.h
  3  *
  4  *  Copyright 2007 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 int            state;          /* function state */
 50 #define SDIO_STATE_PRESENT      (1<<0)          /* present in sysfs */
 51 
 52         u8                      tmpbuf[4];      /* DMA:able scratch buffer */
 53 
 54         unsigned                num_info;       /* number of info strings */
 55         const char              **info;         /* info strings */
 56 
 57         struct sdio_func_tuple *tuples;
 58 };
 59 
 60 #define sdio_func_present(f)    ((f)->state & SDIO_STATE_PRESENT)
 61 
 62 #define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
 63 
 64 #define sdio_func_id(f)         ((f)->dev.bus_id)
 65 
 66 #define sdio_get_drvdata(f)     dev_get_drvdata(&(f)->dev)
 67 #define sdio_set_drvdata(f,d)   dev_set_drvdata(&(f)->dev, d)
 68 
 69 /*
 70  * SDIO function device driver
 71  */
 72 struct sdio_driver {
 73         char *name;
 74         const struct sdio_device_id *id_table;
 75 
 76         int (*probe)(struct sdio_func *, const struct sdio_device_id *);
 77         void (*remove)(struct sdio_func *);
 78 
 79         struct device_driver drv;
 80 };
 81 
 82 /**
 83  * SDIO_DEVICE - macro used to describe a specific SDIO device
 84  * @vend: the 16 bit manufacturer code
 85  * @dev: the 16 bit function id
 86  *
 87  * This macro is used to create a struct sdio_device_id that matches a
 88  * specific device. The class field will be set to SDIO_ANY_ID.
 89  */
 90 #define SDIO_DEVICE(vend,dev) \
 91         .class = SDIO_ANY_ID, \
 92         .vendor = (vend), .device = (dev)
 93 
 94 /**
 95  * SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class
 96  * @dev_class: the 8 bit standard interface code
 97  *
 98  * This macro is used to create a struct sdio_device_id that matches a
 99  * specific standard SDIO function type.  The vendor and device fields will
100  * be set to SDIO_ANY_ID.
101  */
102 #define SDIO_DEVICE_CLASS(dev_class) \
103         .class = (dev_class), \
104         .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
105 
106 extern int sdio_register_driver(struct sdio_driver *);
107 extern void sdio_unregister_driver(struct sdio_driver *);
108 
109 /*
110  * SDIO I/O operations
111  */
112 extern void sdio_claim_host(struct sdio_func *func);
113 extern void sdio_release_host(struct sdio_func *func);
114 
115 extern int sdio_enable_func(struct sdio_func *func);
116 extern int sdio_disable_func(struct sdio_func *func);
117 
118 extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
119 
120 extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
121 extern int sdio_release_irq(struct sdio_func *func);
122 
123 extern unsigned char sdio_readb(struct sdio_func *func,
124         unsigned int addr, int *err_ret);
125 extern unsigned short sdio_readw(struct sdio_func *func,
126         unsigned int addr, int *err_ret);
127 extern unsigned long sdio_readl(struct sdio_func *func,
128         unsigned int addr, int *err_ret);
129 
130 extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
131         unsigned int addr, int count);
132 extern int sdio_readsb(struct sdio_func *func, void *dst,
133         unsigned int addr, int count);
134 
135 extern void sdio_writeb(struct sdio_func *func, unsigned char b,
136         unsigned int addr, int *err_ret);
137 extern void sdio_writew(struct sdio_func *func, unsigned short b,
138         unsigned int addr, int *err_ret);
139 extern void sdio_writel(struct sdio_func *func, unsigned long b,
140         unsigned int addr, int *err_ret);
141 
142 extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
143         void *src, int count);
144 extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
145         void *src, int count);
146 
147 extern unsigned char sdio_f0_readb(struct sdio_func *func,
148         unsigned int addr, int *err_ret);
149 extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
150         unsigned int addr, int *err_ret);
151 
152 #endif
153 
154 
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