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1 /* ------------------------------------------------------------------------- */
3 /* i2c.h - definitions for the i2c-bus interface */
5 /* ------------------------------------------------------------------------- */
6 /* Copyright (C) 1995-2000 Simon G. Vogl
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* ------------------------------------------------------------------------- */
23 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
24 Frodo Looijaard <frodol@dds.nl> */
29 #include <linux/types.h>
31 #include <linux/module.h>
32 #include <linux/i2c-id.h>
33 #include <linux/mod_devicetable.h>
34 #include <linux/device.h> /* for struct device */
35 #include <linux/sched.h> /* for completion */
36 #include <linux/mutex.h>
38 /* --- For i2c-isa ---------------------------------------------------- */
40 extern void i2c_adapter_dev_release(struct device
*dev
);
41 extern struct class i2c_adapter_class
;
42 extern struct bus_type i2c_bus_type
;
44 /* --- General options ------------------------------------------------ */
54 * The master routines are the ones normally used to transmit data to devices
55 * on a bus (or read from them). Apart from two basic transfer functions to
56 * transmit one message at a time, a more complex version can be used to
57 * transmit an arbitrary number of messages without interruption.
59 extern int i2c_master_send(struct i2c_client
*,const char* ,int);
60 extern int i2c_master_recv(struct i2c_client
*,char* ,int);
62 /* Transfer num messages.
64 extern int i2c_transfer(struct i2c_adapter
*adap
, struct i2c_msg
*msgs
, int num
);
67 /* This is the very generalized SMBus access routine. You probably do not
68 want to use this, though; one of the functions below may be much easier,
69 and probably just as fast.
70 Note that we use i2c_adapter here, because you do not need a specific
71 smbus adapter to call this function. */
72 extern s32
i2c_smbus_xfer (struct i2c_adapter
* adapter
, u16 addr
,
74 char read_write
, u8 command
, int size
,
75 union i2c_smbus_data
* data
);
77 /* Now follow the 'nice' access routines. These also document the calling
78 conventions of smbus_access. */
80 extern s32
i2c_smbus_write_quick(struct i2c_client
* client
, u8 value
);
81 extern s32
i2c_smbus_read_byte(struct i2c_client
* client
);
82 extern s32
i2c_smbus_write_byte(struct i2c_client
* client
, u8 value
);
83 extern s32
i2c_smbus_read_byte_data(struct i2c_client
* client
, u8 command
);
84 extern s32
i2c_smbus_write_byte_data(struct i2c_client
* client
,
85 u8 command
, u8 value
);
86 extern s32
i2c_smbus_read_word_data(struct i2c_client
* client
, u8 command
);
87 extern s32
i2c_smbus_write_word_data(struct i2c_client
* client
,
88 u8 command
, u16 value
);
89 extern s32
i2c_smbus_write_block_data(struct i2c_client
* client
,
90 u8 command
, u8 length
,
92 /* Returns the number of read bytes */
93 extern s32
i2c_smbus_read_i2c_block_data(struct i2c_client
* client
,
94 u8 command
, u8
*values
);
95 extern s32
i2c_smbus_write_i2c_block_data(struct i2c_client
* client
,
96 u8 command
, u8 length
,
100 * A driver is capable of handling one or more physical devices present on
101 * I2C adapters. This information is used to inform the driver of adapter
104 * The driver.owner field should be set to the module owner of this driver.
105 * The driver.name field should be set to the name of this driver.
112 /* Notifies the driver that a new bus has appeared. This routine
113 * can be used by the driver to test if the bus meets its conditions
114 * & seek for the presence of the chip(s) it supports. If found, it
115 * registers the client(s) that are on the bus to the i2c admin. via
116 * i2c_attach_client. (LEGACY I2C DRIVERS ONLY)
118 int (*attach_adapter
)(struct i2c_adapter
*);
119 int (*detach_adapter
)(struct i2c_adapter
*);
121 /* tells the driver that a client is about to be deleted & gives it
122 * the chance to remove its private data. Also, if the client struct
123 * has been dynamically allocated by the driver in the function above,
124 * it must be freed here. (LEGACY I2C DRIVERS ONLY)
126 int (*detach_client
)(struct i2c_client
*);
128 /* Standard driver model interfaces, for "new style" i2c drivers.
129 * With the driver model, device enumeration is NEVER done by drivers;
130 * it's done by infrastructure. (NEW STYLE DRIVERS ONLY)
132 int (*probe
)(struct i2c_client
*);
133 int (*remove
)(struct i2c_client
*);
135 /* driver model interfaces that don't relate to enumeration */
136 void (*shutdown
)(struct i2c_client
*);
137 int (*suspend
)(struct i2c_client
*, pm_message_t mesg
);
138 int (*resume
)(struct i2c_client
*);
140 /* a ioctl like command that can be used to perform specific functions
143 int (*command
)(struct i2c_client
*client
,unsigned int cmd
, void *arg
);
145 struct device_driver driver
;
146 struct list_head list
;
148 #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
150 #define I2C_NAME_SIZE 20
153 * struct i2c_client - represent an I2C slave device
154 * @addr: Address used on the I2C bus connected to the parent adapter.
155 * @name: Indicates the type of the device, usually a chip name that's
156 * generic enough to hide second-sourcing and compatible revisions.
157 * @dev: Driver model device node for the slave.
158 * @driver_name: Identifies new-style driver used with this device; also
159 * used as the module name for hotplug/coldplug modprobe support.
161 * An i2c_client identifies a single device (i.e. chip) connected to an
162 * i2c bus. The behaviour is defined by the routines of the driver.
165 unsigned short flags
; /* div., see below */
166 unsigned short addr
; /* chip address - NOTE: 7bit */
167 /* addresses are stored in the */
169 char name
[I2C_NAME_SIZE
];
170 struct i2c_adapter
*adapter
; /* the adapter we sit on */
171 struct i2c_driver
*driver
; /* and our access routines */
172 int usage_count
; /* How many accesses currently */
174 struct device dev
; /* the device structure */
175 int irq
; /* irq issued by device (or -1) */
176 char driver_name
[KOBJ_NAME_LEN
];
177 struct list_head list
;
178 struct completion released
;
180 #define to_i2c_client(d) container_of(d, struct i2c_client, dev)
182 static inline struct i2c_client
*kobj_to_i2c_client(struct kobject
*kobj
)
184 return to_i2c_client(container_of(kobj
, struct device
, kobj
));
187 static inline void *i2c_get_clientdata (struct i2c_client
*dev
)
189 return dev_get_drvdata (&dev
->dev
);
192 static inline void i2c_set_clientdata (struct i2c_client
*dev
, void *data
)
194 dev_set_drvdata (&dev
->dev
, data
);
198 * struct i2c_board_info - template for device creation
199 * @driver_name: identifies the driver to be bound to the device
200 * @type: optional chip type information, to initialize i2c_client.name
201 * @flags: to initialize i2c_client.flags
202 * @addr: stored in i2c_client.addr
203 * @platform_data: stored in i2c_client.dev.platform_data
204 * @irq: stored in i2c_client.irq
206 * I2C doesn't actually support hardware probing, although controllers and
207 * devices may be able to use I2C_SMBUS_QUICK to tell whether or not there's
208 * a device at a given address. Drivers commonly need more information than
209 * that, such as chip type, configuration, associated IRQ, and so on.
211 * i2c_board_info is used to build tables of information listing I2C devices
212 * that are present. This information is used to grow the driver model tree
213 * for "new style" I2C drivers. For mainboards this is done statically using
214 * i2c_register_board_info(), where @bus_num represents an adapter that isn't
215 * yet available. For add-on boards, i2c_new_device() does this dynamically
216 * with the adapter already known.
218 struct i2c_board_info
{
219 char driver_name
[KOBJ_NAME_LEN
];
220 char type
[I2C_NAME_SIZE
];
221 unsigned short flags
;
228 * I2C_BOARD_INFO - macro used to list an i2c device and its driver
229 * @driver: identifies the driver to use with the device
230 * @dev_addr: the device's address on the bus.
232 * This macro initializes essential fields of a struct i2c_board_info,
233 * declaring what has been provided on a particular board. Optional
234 * fields (such as the chip type, its associated irq, or device-specific
235 * platform_data) are provided using conventional syntax.
237 #define I2C_BOARD_INFO(driver,dev_addr) \
238 .driver_name = (driver), .addr = (dev_addr)
241 /* Add-on boards should register/unregister their devices; e.g. a board
242 * with integrated I2C, a config eeprom, sensors, and a codec that's
243 * used in conjunction with the primary hardware.
245 extern struct i2c_client
*
246 i2c_new_device(struct i2c_adapter
*adap
, struct i2c_board_info
const *info
);
248 extern void i2c_unregister_device(struct i2c_client
*);
250 /* Mainboard arch_initcall() code should register all its I2C devices.
251 * This is done at arch_initcall time, before declaring any i2c adapters.
252 * Modules for add-on boards must use other calls.
255 i2c_register_board_info(int busnum
, struct i2c_board_info
const *info
, unsigned n
);
259 * The following structs are for those who like to implement new bus drivers:
260 * i2c_algorithm is the interface to a class of hardware solutions which can
261 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
262 * to name two of the most common.
264 struct i2c_algorithm
{
265 /* If an adapter algorithm can't do I2C-level access, set master_xfer
266 to NULL. If an adapter algorithm can do SMBus access, set
267 smbus_xfer. If set to NULL, the SMBus protocol is simulated
268 using common I2C messages */
269 /* master_xfer should return the number of messages successfully
270 processed, or a negative value on error */
271 int (*master_xfer
)(struct i2c_adapter
*adap
,struct i2c_msg
*msgs
,
273 int (*smbus_xfer
) (struct i2c_adapter
*adap
, u16 addr
,
274 unsigned short flags
, char read_write
,
275 u8 command
, int size
, union i2c_smbus_data
* data
);
277 /* --- ioctl like call to set div. parameters. */
278 int (*algo_control
)(struct i2c_adapter
*, unsigned int, unsigned long);
280 /* To determine what the adapter supports */
281 u32 (*functionality
) (struct i2c_adapter
*);
285 * i2c_adapter is the structure used to identify a physical i2c bus along
286 * with the access algorithms necessary to access it.
289 struct module
*owner
;
292 const struct i2c_algorithm
*algo
; /* the algorithm to access the bus */
295 /* --- administration stuff. */
296 int (*client_register
)(struct i2c_client
*);
297 int (*client_unregister
)(struct i2c_client
*);
299 /* data fields that are valid for all devices */
300 u8 level
; /* nesting level for lockdep */
301 struct mutex bus_lock
;
302 struct mutex clist_lock
;
306 struct device dev
; /* the adapter device */
309 struct list_head clients
;
310 struct list_head list
;
312 struct completion dev_released
;
314 #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
316 static inline void *i2c_get_adapdata (struct i2c_adapter
*dev
)
318 return dev_get_drvdata (&dev
->dev
);
321 static inline void i2c_set_adapdata (struct i2c_adapter
*dev
, void *data
)
323 dev_set_drvdata (&dev
->dev
, data
);
326 /*flags for the client struct: */
327 #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
328 #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
329 /* Must equal I2C_M_TEN below */
331 /* i2c adapter classes (bitmask) */
332 #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */
333 #define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */
334 #define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */
335 #define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */
336 #define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */
337 #define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */
338 #define I2C_CLASS_SOUND (1<<6) /* sound devices */
339 #define I2C_CLASS_ALL (UINT_MAX) /* all of the above */
341 /* i2c_client_address_data is the struct for holding default client
342 * addresses for a driver and for the parameters supplied on the
345 struct i2c_client_address_data
{
346 unsigned short *normal_i2c
;
347 unsigned short *probe
;
348 unsigned short *ignore
;
349 unsigned short **forces
;
352 /* Internal numbers to terminate lists */
353 #define I2C_CLIENT_END 0xfffeU
355 /* The numbers to use to set I2C bus address */
356 #define ANY_I2C_BUS 0xffff
357 #define ANY_I2C_ISA_BUS 9191
360 /* ----- functions exported by i2c.o */
364 extern int i2c_add_adapter(struct i2c_adapter
*);
365 extern int i2c_del_adapter(struct i2c_adapter
*);
367 extern int i2c_register_driver(struct module
*, struct i2c_driver
*);
368 extern int i2c_del_driver(struct i2c_driver
*);
370 static inline int i2c_add_driver(struct i2c_driver
*driver
)
372 return i2c_register_driver(THIS_MODULE
, driver
);
375 extern int i2c_attach_client(struct i2c_client
*);
376 extern int i2c_detach_client(struct i2c_client
*);
378 /* Should be used to make sure that client-struct is valid and that it
379 is okay to access the i2c-client.
380 returns -ENODEV if client has gone in the meantime */
381 extern int i2c_use_client(struct i2c_client
*);
382 extern int i2c_release_client(struct i2c_client
*);
384 /* call the i2c_client->command() of all attached clients with
385 * the given arguments */
386 extern void i2c_clients_command(struct i2c_adapter
*adap
,
387 unsigned int cmd
, void *arg
);
389 /* returns -EBUSY if address has been taken, 0 if not. Note that the only
390 other place at which this is called is within i2c_attach_client; so
391 you can cheat by simply not registering. Not recommended, of course! */
392 extern int i2c_check_addr (struct i2c_adapter
*adapter
, int addr
);
394 /* Detect function. It iterates over all possible addresses itself.
395 * It will only call found_proc if some client is connected at the
396 * specific address (unless a 'force' matched);
398 extern int i2c_probe(struct i2c_adapter
*adapter
,
399 struct i2c_client_address_data
*address_data
,
400 int (*found_proc
) (struct i2c_adapter
*, int, int));
402 /* An ioctl like call to set div. parameters of the adapter.
404 extern int i2c_control(struct i2c_client
*,unsigned int, unsigned long);
406 extern struct i2c_adapter
* i2c_get_adapter(int id
);
407 extern void i2c_put_adapter(struct i2c_adapter
*adap
);
410 /* Return the functionality mask */
411 static inline u32
i2c_get_functionality(struct i2c_adapter
*adap
)
413 return adap
->algo
->functionality(adap
);
416 /* Return 1 if adapter supports everything we need, 0 if not. */
417 static inline int i2c_check_functionality(struct i2c_adapter
*adap
, u32 func
)
419 return (func
& i2c_get_functionality(adap
)) == func
;
422 /* Return id number for a specific adapter */
423 static inline int i2c_adapter_id(struct i2c_adapter
*adap
)
427 #endif /* __KERNEL__ */
430 * I2C Message - used for pure i2c transaction, also from /dev interface
433 __u16 addr
; /* slave address */
435 #define I2C_M_TEN 0x10 /* we have a ten bit chip address */
436 #define I2C_M_RD 0x01
437 #define I2C_M_NOSTART 0x4000
438 #define I2C_M_REV_DIR_ADDR 0x2000
439 #define I2C_M_IGNORE_NAK 0x1000
440 #define I2C_M_NO_RD_ACK 0x0800
441 #define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */
442 __u16 len
; /* msg length */
443 __u8
*buf
; /* pointer to msg data */
446 /* To determine what functionality is present */
448 #define I2C_FUNC_I2C 0x00000001
449 #define I2C_FUNC_10BIT_ADDR 0x00000002
450 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
451 #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */
452 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
453 #define I2C_FUNC_SMBUS_QUICK 0x00010000
454 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
455 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000
456 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000
457 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000
458 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000
459 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000
460 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
461 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
462 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
463 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
464 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
465 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */
466 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
468 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
469 I2C_FUNC_SMBUS_WRITE_BYTE)
470 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
471 I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
472 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
473 I2C_FUNC_SMBUS_WRITE_WORD_DATA)
474 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
475 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
476 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
477 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
478 #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
479 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
481 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
482 I2C_FUNC_SMBUS_BYTE | \
483 I2C_FUNC_SMBUS_BYTE_DATA | \
484 I2C_FUNC_SMBUS_WORD_DATA | \
485 I2C_FUNC_SMBUS_PROC_CALL | \
486 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
487 I2C_FUNC_SMBUS_I2C_BLOCK)
490 * Data for SMBus Messages
492 #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */
493 union i2c_smbus_data
{
496 __u8 block
[I2C_SMBUS_BLOCK_MAX
+ 2]; /* block[0] is used for length */
497 /* and one more for user-space compatibility */
500 /* smbus_access read or write markers */
501 #define I2C_SMBUS_READ 1
502 #define I2C_SMBUS_WRITE 0
504 /* SMBus transaction types (size parameter in the above functions)
505 Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */
506 #define I2C_SMBUS_QUICK 0
507 #define I2C_SMBUS_BYTE 1
508 #define I2C_SMBUS_BYTE_DATA 2
509 #define I2C_SMBUS_WORD_DATA 3
510 #define I2C_SMBUS_PROC_CALL 4
511 #define I2C_SMBUS_BLOCK_DATA 5
512 #define I2C_SMBUS_I2C_BLOCK_DATA 6
513 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */
516 /* ----- commands for the ioctl like i2c_command call:
517 * note that additional calls are defined in the algorithm and hw
518 * dependent layers - these can be listed here, or see the
519 * corresponding header files.
521 /* -> bit-adapter specific ioctls */
522 #define I2C_RETRIES 0x0701 /* number of times a device address */
523 /* should be polled when not */
525 #define I2C_TIMEOUT 0x0702 /* set timeout - call with int */
528 /* this is for i2c-dev.c */
529 #define I2C_SLAVE 0x0703 /* Change slave address */
530 /* Attn.: Slave address is 7 or 10 bits */
531 #define I2C_SLAVE_FORCE 0x0706 /* Change slave address */
532 /* Attn.: Slave address is 7 or 10 bits */
533 /* This changes the address, even if it */
534 /* is already taken! */
535 #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
537 #define I2C_FUNCS 0x0705 /* Get the adapter functionality */
538 #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/
539 #define I2C_PEC 0x0708 /* != 0 for SMBus PEC */
541 #define I2C_SMBUS 0x0720 /* SMBus-level access */
543 /* ----- I2C-DEV: char device interface stuff ------------------------- */
546 #define I2C_MAJOR 89 /* Device major number */
548 /* These defines are used for probing i2c client addresses */
549 /* The length of the option lists */
550 #define I2C_CLIENT_MAX_OPTS 48
552 /* Default fill of many variables */
553 #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
554 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
555 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
556 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
557 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
558 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
559 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
560 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
561 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
562 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
563 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
564 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
565 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
566 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
567 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
568 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END}
570 /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the
573 #define I2C_CLIENT_MODULE_PARM(var,desc) \
574 static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \
575 static unsigned int var##_num; \
576 module_param_array(var, short, &var##_num, 0); \
577 MODULE_PARM_DESC(var,desc)
579 #define I2C_CLIENT_MODULE_PARM_FORCE(name) \
580 I2C_CLIENT_MODULE_PARM(force_##name, \
581 "List of adapter,address pairs which are " \
582 "unquestionably assumed to contain a `" \
586 #define I2C_CLIENT_INSMOD_COMMON \
587 I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \
589 I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \
591 static struct i2c_client_address_data addr_data = { \
592 .normal_i2c = normal_i2c, \
598 /* These are the ones you want to use in your own drivers. Pick the one
599 which matches the number of devices the driver differenciates between. */
600 #define I2C_CLIENT_INSMOD \
601 I2C_CLIENT_MODULE_PARM(force, \
602 "List of adapter,address pairs to boldly assume " \
604 static unsigned short *forces[] = { \
608 I2C_CLIENT_INSMOD_COMMON
610 #define I2C_CLIENT_INSMOD_1(chip1) \
611 enum chips { any_chip, chip1 }; \
612 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
613 "boldly assume to be present"); \
614 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
615 static unsigned short *forces[] = { force, force_##chip1, NULL }; \
616 I2C_CLIENT_INSMOD_COMMON
618 #define I2C_CLIENT_INSMOD_2(chip1, chip2) \
619 enum chips { any_chip, chip1, chip2 }; \
620 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
621 "boldly assume to be present"); \
622 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
623 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
624 static unsigned short *forces[] = { force, force_##chip1, \
625 force_##chip2, NULL }; \
626 I2C_CLIENT_INSMOD_COMMON
628 #define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \
629 enum chips { any_chip, chip1, chip2, chip3 }; \
630 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
631 "boldly assume to be present"); \
632 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
633 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
634 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
635 static unsigned short *forces[] = { force, force_##chip1, \
636 force_##chip2, force_##chip3, \
638 I2C_CLIENT_INSMOD_COMMON
640 #define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \
641 enum chips { any_chip, chip1, chip2, chip3, chip4 }; \
642 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
643 "boldly assume to be present"); \
644 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
645 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
646 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
647 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
648 static unsigned short *forces[] = { force, force_##chip1, \
649 force_##chip2, force_##chip3, \
650 force_##chip4, NULL}; \
651 I2C_CLIENT_INSMOD_COMMON
653 #define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \
654 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \
655 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
656 "boldly assume to be present"); \
657 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
658 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
659 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
660 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
661 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
662 static unsigned short *forces[] = { force, force_##chip1, \
663 force_##chip2, force_##chip3, \
664 force_##chip4, force_##chip5, \
666 I2C_CLIENT_INSMOD_COMMON
668 #define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \
669 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \
670 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
671 "boldly assume to be present"); \
672 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
673 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
674 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
675 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
676 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
677 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
678 static unsigned short *forces[] = { force, force_##chip1, \
679 force_##chip2, force_##chip3, \
680 force_##chip4, force_##chip5, \
681 force_##chip6, NULL }; \
682 I2C_CLIENT_INSMOD_COMMON
684 #define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \
685 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
687 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
688 "boldly assume to be present"); \
689 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
690 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
691 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
692 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
693 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
694 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
695 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
696 static unsigned short *forces[] = { force, force_##chip1, \
697 force_##chip2, force_##chip3, \
698 force_##chip4, force_##chip5, \
699 force_##chip6, force_##chip7, \
701 I2C_CLIENT_INSMOD_COMMON
703 #define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \
704 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
706 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
707 "boldly assume to be present"); \
708 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
709 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
710 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
711 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
712 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
713 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
714 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
715 I2C_CLIENT_MODULE_PARM_FORCE(chip8); \
716 static unsigned short *forces[] = { force, force_##chip1, \
717 force_##chip2, force_##chip3, \
718 force_##chip4, force_##chip5, \
719 force_##chip6, force_##chip7, \
720 force_##chip8, NULL }; \
721 I2C_CLIENT_INSMOD_COMMON
722 #endif /* __KERNEL__ */
723 #endif /* _LINUX_I2C_H */