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 extern struct bus_type i2c_bus_type;
40 /* --- General options ------------------------------------------------ */
50 * The master routines are the ones normally used to transmit data to devices
51 * on a bus (or read from them). Apart from two basic transfer functions to
52 * transmit one message at a time, a more complex version can be used to
53 * transmit an arbitrary number of messages without interruption.
55 extern int i2c_master_send(struct i2c_client *,const char* ,int);
56 extern int i2c_master_recv(struct i2c_client *,char* ,int);
58 /* Transfer num messages.
60 extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
63 /* This is the very generalized SMBus access routine. You probably do not
64 want to use this, though; one of the functions below may be much easier,
65 and probably just as fast.
66 Note that we use i2c_adapter here, because you do not need a specific
67 smbus adapter to call this function. */
68 extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr,
70 char read_write, u8 command, int size,
71 union i2c_smbus_data * data);
73 /* Now follow the 'nice' access routines. These also document the calling
74 conventions of smbus_access. */
76 extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value);
77 extern s32 i2c_smbus_read_byte(struct i2c_client * client);
78 extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value);
79 extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command);
80 extern s32 i2c_smbus_write_byte_data(struct i2c_client * client,
81 u8 command, u8 value);
82 extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command);
83 extern s32 i2c_smbus_write_word_data(struct i2c_client * client,
84 u8 command, u16 value);
85 /* Returns the number of read bytes */
86 extern s32 i2c_smbus_read_block_data(struct i2c_client *client,
87 u8 command, u8 *values);
88 extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
89 u8 command, u8 length,
91 /* Returns the number of read bytes */
92 extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
93 u8 command, u8 *values);
94 extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
95 u8 command, u8 length,
99 * A driver is capable of handling one or more physical devices present on
100 * I2C adapters. This information is used to inform the driver of adapter
103 * The driver.owner field should be set to the module owner of this driver.
104 * The driver.name field should be set to the name of this driver.
111 /* Notifies the driver that a new bus has appeared. This routine
112 * can be used by the driver to test if the bus meets its conditions
113 * & seek for the presence of the chip(s) it supports. If found, it
114 * registers the client(s) that are on the bus to the i2c admin. via
115 * i2c_attach_client. (LEGACY I2C DRIVERS ONLY)
117 int (*attach_adapter)(struct i2c_adapter *);
118 int (*detach_adapter)(struct i2c_adapter *);
120 /* tells the driver that a client is about to be deleted & gives it
121 * the chance to remove its private data. Also, if the client struct
122 * has been dynamically allocated by the driver in the function above,
123 * it must be freed here. (LEGACY I2C DRIVERS ONLY)
125 int (*detach_client)(struct i2c_client *);
127 /* Standard driver model interfaces, for "new style" i2c drivers.
128 * With the driver model, device enumeration is NEVER done by drivers;
129 * it's done by infrastructure. (NEW STYLE DRIVERS ONLY)
131 int (*probe)(struct i2c_client *);
132 int (*remove)(struct i2c_client *);
134 /* driver model interfaces that don't relate to enumeration */
135 void (*shutdown)(struct i2c_client *);
136 int (*suspend)(struct i2c_client *, pm_message_t mesg);
137 int (*resume)(struct i2c_client *);
139 /* a ioctl like command that can be used to perform specific functions
142 int (*command)(struct i2c_client *client,unsigned int cmd, void *arg);
144 struct device_driver driver;
145 struct list_head list;
147 #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
149 #define I2C_NAME_SIZE 20
152 * struct i2c_client - represent an I2C slave device
153 * @flags: I2C_CLIENT_TEN indicates the device uses a ten bit chip address;
154 * I2C_CLIENT_PEC indicates it uses SMBus Packet Error Checking
155 * @addr: Address used on the I2C bus connected to the parent adapter.
156 * @name: Indicates the type of the device, usually a chip name that's
157 * generic enough to hide second-sourcing and compatible revisions.
158 * @adapter: manages the bus segment hosting this I2C device
159 * @dev: Driver model device node for the slave.
160 * @irq: indicates the IRQ generated by this device (if any)
161 * @driver_name: Identifies new-style driver used with this device; also
162 * used as the module name for hotplug/coldplug modprobe support.
164 * An i2c_client identifies a single device (i.e. chip) connected to an
165 * i2c bus. The behaviour exposed to Linux is defined by the driver
166 * managing the device.
169 unsigned short flags; /* div., see below */
170 unsigned short addr; /* chip address - NOTE: 7bit */
171 /* addresses are stored in the */
173 char name[I2C_NAME_SIZE];
174 struct i2c_adapter *adapter; /* the adapter we sit on */
175 struct i2c_driver *driver; /* and our access routines */
176 int usage_count; /* How many accesses currently */
178 struct device dev; /* the device structure */
179 int irq; /* irq issued by device (or -1) */
180 char driver_name[KOBJ_NAME_LEN];
181 struct list_head list;
182 struct completion released;
184 #define to_i2c_client(d) container_of(d, struct i2c_client, dev)
186 static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
188 return to_i2c_client(container_of(kobj, struct device, kobj));
191 static inline void *i2c_get_clientdata (struct i2c_client *dev)
193 return dev_get_drvdata (&dev->dev);
196 static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
198 dev_set_drvdata (&dev->dev, data);
202 * struct i2c_board_info - template for device creation
203 * @driver_name: identifies the driver to be bound to the device
204 * @type: optional chip type information, to initialize i2c_client.name
205 * @flags: to initialize i2c_client.flags
206 * @addr: stored in i2c_client.addr
207 * @platform_data: stored in i2c_client.dev.platform_data
208 * @irq: stored in i2c_client.irq
210 * I2C doesn't actually support hardware probing, although controllers and
211 * devices may be able to use I2C_SMBUS_QUICK to tell whether or not there's
212 * a device at a given address. Drivers commonly need more information than
213 * that, such as chip type, configuration, associated IRQ, and so on.
215 * i2c_board_info is used to build tables of information listing I2C devices
216 * that are present. This information is used to grow the driver model tree
217 * for "new style" I2C drivers. For mainboards this is done statically using
218 * i2c_register_board_info(); bus numbers identify adapters that aren't
219 * yet available. For add-on boards, i2c_new_device() does this dynamically
220 * with the adapter already known.
222 struct i2c_board_info {
223 char driver_name[KOBJ_NAME_LEN];
224 char type[I2C_NAME_SIZE];
225 unsigned short flags;
232 * I2C_BOARD_INFO - macro used to list an i2c device and its driver
233 * @driver: identifies the driver to use with the device
234 * @dev_addr: the device's address on the bus.
236 * This macro initializes essential fields of a struct i2c_board_info,
237 * declaring what has been provided on a particular board. Optional
238 * fields (such as the chip type, its associated irq, or device-specific
239 * platform_data) are provided using conventional syntax.
241 #define I2C_BOARD_INFO(driver,dev_addr) \
242 .driver_name = (driver), .addr = (dev_addr)
245 /* Add-on boards should register/unregister their devices; e.g. a board
246 * with integrated I2C, a config eeprom, sensors, and a codec that's
247 * used in conjunction with the primary hardware.
249 extern struct i2c_client *
250 i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info);
252 /* If you don't know the exact address of an I2C device, use this variant
253 * instead, which can probe for device presence in a list of possible
256 extern struct i2c_client *
257 i2c_new_probed_device(struct i2c_adapter *adap,
258 struct i2c_board_info *info,
259 unsigned short const *addr_list);
261 extern void i2c_unregister_device(struct i2c_client *);
263 /* Mainboard arch_initcall() code should register all its I2C devices.
264 * This is done at arch_initcall time, before declaring any i2c adapters.
265 * Modules for add-on boards must use other calls.
268 i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n);
272 * The following structs are for those who like to implement new bus drivers:
273 * i2c_algorithm is the interface to a class of hardware solutions which can
274 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
275 * to name two of the most common.
277 struct i2c_algorithm {
278 /* If an adapter algorithm can't do I2C-level access, set master_xfer
279 to NULL. If an adapter algorithm can do SMBus access, set
280 smbus_xfer. If set to NULL, the SMBus protocol is simulated
281 using common I2C messages */
282 /* master_xfer should return the number of messages successfully
283 processed, or a negative value on error */
284 int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs,
286 int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr,
287 unsigned short flags, char read_write,
288 u8 command, int size, union i2c_smbus_data * data);
290 /* --- ioctl like call to set div. parameters. */
291 int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long);
293 /* To determine what the adapter supports */
294 u32 (*functionality) (struct i2c_adapter *);
298 * i2c_adapter is the structure used to identify a physical i2c bus along
299 * with the access algorithms necessary to access it.
302 struct module *owner;
305 const struct i2c_algorithm *algo; /* the algorithm to access the bus */
308 /* --- administration stuff. */
309 int (*client_register)(struct i2c_client *);
310 int (*client_unregister)(struct i2c_client *);
312 /* data fields that are valid for all devices */
313 u8 level; /* nesting level for lockdep */
314 struct mutex bus_lock;
315 struct mutex clist_lock;
319 struct device dev; /* the adapter device */
322 struct list_head clients;
323 struct list_head list;
325 struct completion dev_released;
327 #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
329 static inline void *i2c_get_adapdata (struct i2c_adapter *dev)
331 return dev_get_drvdata (&dev->dev);
334 static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
336 dev_set_drvdata (&dev->dev, data);
339 /*flags for the client struct: */
340 #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
341 #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
342 /* Must equal I2C_M_TEN below */
344 /* i2c adapter classes (bitmask) */
345 #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */
346 #define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */
347 #define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */
348 #define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */
349 #define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */
350 #define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */
351 #define I2C_CLASS_SOUND (1<<6) /* sound devices */
352 #define I2C_CLASS_ALL (UINT_MAX) /* all of the above */
354 /* i2c_client_address_data is the struct for holding default client
355 * addresses for a driver and for the parameters supplied on the
358 struct i2c_client_address_data {
359 unsigned short *normal_i2c;
360 unsigned short *probe;
361 unsigned short *ignore;
362 unsigned short **forces;
365 /* Internal numbers to terminate lists */
366 #define I2C_CLIENT_END 0xfffeU
368 /* The numbers to use to set I2C bus address */
369 #define ANY_I2C_BUS 0xffff
370 #define ANY_I2C_ISA_BUS 9191
373 /* ----- functions exported by i2c.o */
377 extern int i2c_add_adapter(struct i2c_adapter *);
378 extern int i2c_del_adapter(struct i2c_adapter *);
379 extern int i2c_add_numbered_adapter(struct i2c_adapter *);
381 extern int i2c_register_driver(struct module *, struct i2c_driver *);
382 extern void i2c_del_driver(struct i2c_driver *);
384 static inline int i2c_add_driver(struct i2c_driver *driver)
386 return i2c_register_driver(THIS_MODULE, driver);
389 extern int i2c_attach_client(struct i2c_client *);
390 extern int i2c_detach_client(struct i2c_client *);
392 /* Should be used to make sure that client-struct is valid and that it
393 is okay to access the i2c-client.
394 returns -ENODEV if client has gone in the meantime */
395 extern int i2c_use_client(struct i2c_client *);
396 extern int i2c_release_client(struct i2c_client *);
398 /* call the i2c_client->command() of all attached clients with
399 * the given arguments */
400 extern void i2c_clients_command(struct i2c_adapter *adap,
401 unsigned int cmd, void *arg);
403 /* returns -EBUSY if address has been taken, 0 if not. Note that the only
404 other place at which this is called is within i2c_attach_client; so
405 you can cheat by simply not registering. Not recommended, of course! */
406 extern int i2c_check_addr (struct i2c_adapter *adapter, int addr);
408 /* Detect function. It iterates over all possible addresses itself.
409 * It will only call found_proc if some client is connected at the
410 * specific address (unless a 'force' matched);
412 extern int i2c_probe(struct i2c_adapter *adapter,
413 struct i2c_client_address_data *address_data,
414 int (*found_proc) (struct i2c_adapter *, int, int));
416 /* An ioctl like call to set div. parameters of the adapter.
418 extern int i2c_control(struct i2c_client *,unsigned int, unsigned long);
420 extern struct i2c_adapter* i2c_get_adapter(int id);
421 extern void i2c_put_adapter(struct i2c_adapter *adap);
424 /* Return the functionality mask */
425 static inline u32 i2c_get_functionality(struct i2c_adapter *adap)
427 return adap->algo->functionality(adap);
430 /* Return 1 if adapter supports everything we need, 0 if not. */
431 static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
433 return (func & i2c_get_functionality(adap)) == func;
436 /* Return id number for a specific adapter */
437 static inline int i2c_adapter_id(struct i2c_adapter *adap)
441 #endif /* __KERNEL__ */
444 * I2C Message - used for pure i2c transaction, also from /dev interface
447 __u16 addr; /* slave address */
449 #define I2C_M_TEN 0x10 /* we have a ten bit chip address */
450 #define I2C_M_RD 0x01
451 #define I2C_M_NOSTART 0x4000
452 #define I2C_M_REV_DIR_ADDR 0x2000
453 #define I2C_M_IGNORE_NAK 0x1000
454 #define I2C_M_NO_RD_ACK 0x0800
455 #define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */
456 __u16 len; /* msg length */
457 __u8 *buf; /* pointer to msg data */
460 /* To determine what functionality is present */
462 #define I2C_FUNC_I2C 0x00000001
463 #define I2C_FUNC_10BIT_ADDR 0x00000002
464 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
465 #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */
466 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
467 #define I2C_FUNC_SMBUS_QUICK 0x00010000
468 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
469 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000
470 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000
471 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000
472 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000
473 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000
474 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
475 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
476 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
477 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
478 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
479 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */
480 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
482 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
483 I2C_FUNC_SMBUS_WRITE_BYTE)
484 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
485 I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
486 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
487 I2C_FUNC_SMBUS_WRITE_WORD_DATA)
488 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
489 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
490 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
491 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
492 #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
493 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
495 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
496 I2C_FUNC_SMBUS_BYTE | \
497 I2C_FUNC_SMBUS_BYTE_DATA | \
498 I2C_FUNC_SMBUS_WORD_DATA | \
499 I2C_FUNC_SMBUS_PROC_CALL | \
500 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
501 I2C_FUNC_SMBUS_I2C_BLOCK)
504 * Data for SMBus Messages
506 #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */
507 union i2c_smbus_data {
510 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */
511 /* and one more for user-space compatibility */
514 /* smbus_access read or write markers */
515 #define I2C_SMBUS_READ 1
516 #define I2C_SMBUS_WRITE 0
518 /* SMBus transaction types (size parameter in the above functions)
519 Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */
520 #define I2C_SMBUS_QUICK 0
521 #define I2C_SMBUS_BYTE 1
522 #define I2C_SMBUS_BYTE_DATA 2
523 #define I2C_SMBUS_WORD_DATA 3
524 #define I2C_SMBUS_PROC_CALL 4
525 #define I2C_SMBUS_BLOCK_DATA 5
526 #define I2C_SMBUS_I2C_BLOCK_DATA 6
527 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */
530 /* ----- commands for the ioctl like i2c_command call:
531 * note that additional calls are defined in the algorithm and hw
532 * dependent layers - these can be listed here, or see the
533 * corresponding header files.
535 /* -> bit-adapter specific ioctls */
536 #define I2C_RETRIES 0x0701 /* number of times a device address */
537 /* should be polled when not */
539 #define I2C_TIMEOUT 0x0702 /* set timeout - call with int */
542 /* this is for i2c-dev.c */
543 #define I2C_SLAVE 0x0703 /* Change slave address */
544 /* Attn.: Slave address is 7 or 10 bits */
545 #define I2C_SLAVE_FORCE 0x0706 /* Change slave address */
546 /* Attn.: Slave address is 7 or 10 bits */
547 /* This changes the address, even if it */
548 /* is already taken! */
549 #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
551 #define I2C_FUNCS 0x0705 /* Get the adapter functionality */
552 #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/
553 #define I2C_PEC 0x0708 /* != 0 for SMBus PEC */
555 #define I2C_SMBUS 0x0720 /* SMBus-level access */
557 /* ----- I2C-DEV: char device interface stuff ------------------------- */
560 #define I2C_MAJOR 89 /* Device major number */
562 /* These defines are used for probing i2c client addresses */
563 /* The length of the option lists */
564 #define I2C_CLIENT_MAX_OPTS 48
566 /* Default fill of many variables */
567 #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
568 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
569 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
570 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
571 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
572 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
573 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
574 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
575 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
576 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
577 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
578 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
579 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
580 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
581 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
582 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END}
584 /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the
587 #define I2C_CLIENT_MODULE_PARM(var,desc) \
588 static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \
589 static unsigned int var##_num; \
590 module_param_array(var, short, &var##_num, 0); \
591 MODULE_PARM_DESC(var,desc)
593 #define I2C_CLIENT_MODULE_PARM_FORCE(name) \
594 I2C_CLIENT_MODULE_PARM(force_##name, \
595 "List of adapter,address pairs which are " \
596 "unquestionably assumed to contain a `" \
600 #define I2C_CLIENT_INSMOD_COMMON \
601 I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \
603 I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \
605 static struct i2c_client_address_data addr_data = { \
606 .normal_i2c = normal_i2c, \
612 /* These are the ones you want to use in your own drivers. Pick the one
613 which matches the number of devices the driver differenciates between. */
614 #define I2C_CLIENT_INSMOD \
615 I2C_CLIENT_MODULE_PARM(force, \
616 "List of adapter,address pairs to boldly assume " \
618 static unsigned short *forces[] = { \
622 I2C_CLIENT_INSMOD_COMMON
624 #define I2C_CLIENT_INSMOD_1(chip1) \
625 enum chips { any_chip, chip1 }; \
626 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
627 "boldly assume to be present"); \
628 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
629 static unsigned short *forces[] = { force, force_##chip1, NULL }; \
630 I2C_CLIENT_INSMOD_COMMON
632 #define I2C_CLIENT_INSMOD_2(chip1, chip2) \
633 enum chips { any_chip, chip1, chip2 }; \
634 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
635 "boldly assume to be present"); \
636 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
637 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
638 static unsigned short *forces[] = { force, force_##chip1, \
639 force_##chip2, NULL }; \
640 I2C_CLIENT_INSMOD_COMMON
642 #define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \
643 enum chips { any_chip, chip1, chip2, chip3 }; \
644 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
645 "boldly assume to be present"); \
646 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
647 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
648 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
649 static unsigned short *forces[] = { force, force_##chip1, \
650 force_##chip2, force_##chip3, \
652 I2C_CLIENT_INSMOD_COMMON
654 #define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \
655 enum chips { any_chip, chip1, chip2, chip3, chip4 }; \
656 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
657 "boldly assume to be present"); \
658 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
659 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
660 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
661 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
662 static unsigned short *forces[] = { force, force_##chip1, \
663 force_##chip2, force_##chip3, \
664 force_##chip4, NULL}; \
665 I2C_CLIENT_INSMOD_COMMON
667 #define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \
668 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \
669 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
670 "boldly assume to be present"); \
671 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
672 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
673 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
674 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
675 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
676 static unsigned short *forces[] = { force, force_##chip1, \
677 force_##chip2, force_##chip3, \
678 force_##chip4, force_##chip5, \
680 I2C_CLIENT_INSMOD_COMMON
682 #define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \
683 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \
684 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
685 "boldly assume to be present"); \
686 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
687 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
688 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
689 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
690 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
691 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
692 static unsigned short *forces[] = { force, force_##chip1, \
693 force_##chip2, force_##chip3, \
694 force_##chip4, force_##chip5, \
695 force_##chip6, NULL }; \
696 I2C_CLIENT_INSMOD_COMMON
698 #define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \
699 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
701 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
702 "boldly assume to be present"); \
703 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
704 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
705 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
706 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
707 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
708 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
709 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
710 static unsigned short *forces[] = { force, force_##chip1, \
711 force_##chip2, force_##chip3, \
712 force_##chip4, force_##chip5, \
713 force_##chip6, force_##chip7, \
715 I2C_CLIENT_INSMOD_COMMON
717 #define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \
718 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
720 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
721 "boldly assume to be present"); \
722 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
723 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
724 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
725 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
726 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
727 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
728 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
729 I2C_CLIENT_MODULE_PARM_FORCE(chip8); \
730 static unsigned short *forces[] = { force, force_##chip1, \
731 force_##chip2, force_##chip3, \
732 force_##chip4, force_##chip5, \
733 force_##chip6, force_##chip7, \
734 force_##chip8, NULL }; \
735 I2C_CLIENT_INSMOD_COMMON
736 #endif /* __KERNEL__ */
737 #endif /* _LINUX_I2C_H */