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sdio_func.h
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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 LINUX_MMC_SDIO_FUNC_H
13 #define LINUX_MMC_SDIO_FUNC_H
14 
15 #include <linux/device.h>
16 #include <linux/mod_devicetable.h>
17 
18 #include <linux/mmc/pm.h>
19 
20 struct mmc_card;
21 struct sdio_func;
22 
23 typedef void (sdio_irq_handler_t)(struct sdio_func *);
24 
25 /*
26  * SDIO function CIS tuple (unknown to the core)
27  */
30  unsigned char code;
31  unsigned char size;
32  unsigned char data[0];
33 };
34 
35 /*
36  * SDIO function devices
37  */
38 struct sdio_func {
39  struct mmc_card *card; /* the card this device belongs to */
40  struct device dev; /* the device */
41  sdio_irq_handler_t *irq_handler; /* IRQ callback */
42  unsigned int num; /* function number */
43 
44  unsigned char class; /* standard interface class */
45  unsigned short vendor; /* vendor id */
46  unsigned short device; /* device id */
47 
48  unsigned max_blksize; /* maximum block size */
49  unsigned cur_blksize; /* current block size */
50 
51  unsigned enable_timeout; /* max enable timeout in msec */
52 
53  unsigned int state; /* function state */
54 #define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
55 
56  u8 tmpbuf[4]; /* DMA:able scratch buffer */
57 
58  unsigned num_info; /* number of info strings */
59  const char **info; /* info strings */
60 
62 };
63 
64 #define sdio_func_present(f) ((f)->state & SDIO_STATE_PRESENT)
65 
66 #define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)
67 
68 #define sdio_func_id(f) (dev_name(&(f)->dev))
69 
70 #define sdio_get_drvdata(f) dev_get_drvdata(&(f)->dev)
71 #define sdio_set_drvdata(f,d) dev_set_drvdata(&(f)->dev, d)
72 #define dev_to_sdio_func(d) container_of(d, struct sdio_func, dev)
73 
74 /*
75  * SDIO function device driver
76  */
77 struct sdio_driver {
78  char *name;
79  const struct sdio_device_id *id_table;
80 
81  int (*probe)(struct sdio_func *, const struct sdio_device_id *);
82  void (*remove)(struct sdio_func *);
83 
85 };
86 
87 #define to_sdio_driver(d) container_of(d, struct sdio_driver, drv)
88 
97 #define SDIO_DEVICE(vend,dev) \
98  .class = SDIO_ANY_ID, \
99  .vendor = (vend), .device = (dev)
100 
109 #define SDIO_DEVICE_CLASS(dev_class) \
110  .class = (dev_class), \
111  .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
112 
113 extern int sdio_register_driver(struct sdio_driver *);
114 extern void sdio_unregister_driver(struct sdio_driver *);
115 
116 /*
117  * SDIO I/O operations
118  */
119 extern void sdio_claim_host(struct sdio_func *func);
120 extern void sdio_release_host(struct sdio_func *func);
121 
122 extern int sdio_enable_func(struct sdio_func *func);
123 extern int sdio_disable_func(struct sdio_func *func);
124 
125 extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);
126 
127 extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
128 extern int sdio_release_irq(struct sdio_func *func);
129 
130 extern unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz);
131 
132 extern u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret);
133 extern u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret);
134 extern u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret);
135 
136 extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
137  unsigned int addr, int count);
138 extern int sdio_readsb(struct sdio_func *func, void *dst,
139  unsigned int addr, int count);
140 
141 extern void sdio_writeb(struct sdio_func *func, u8 b,
142  unsigned int addr, int *err_ret);
143 extern void sdio_writew(struct sdio_func *func, u16 b,
144  unsigned int addr, int *err_ret);
145 extern void sdio_writel(struct sdio_func *func, u32 b,
146  unsigned int addr, int *err_ret);
147 
148 extern u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte,
149  unsigned int addr, int *err_ret);
150 
151 extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
152  void *src, int count);
153 extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
154  void *src, int count);
155 
156 extern unsigned char sdio_f0_readb(struct sdio_func *func,
157  unsigned int addr, int *err_ret);
158 extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
159  unsigned int addr, int *err_ret);
160 
163 
164 #endif /* LINUX_MMC_SDIO_FUNC_H */