1 /* ------------------------------------------------------------------------- */ 2 /* */ 3 /* i2c.h - definitions for the i2c-bus interface */ 4 /* */ 5 /* ------------------------------------------------------------------------- */ 6 /* Copyright (C) 1995-2000 Simon G. Vogl 7 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. 12 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. 17 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 /* ------------------------------------------------------------------------- */ 22 23 /* With some changes from Ky�sti M�lkki <[email protected]> and 24 Frodo Looijaard <[email protected]> */ 25 26 #ifndef _LINUX_I2C_H 27 #define _LINUX_I2C_H 28 29 #include <linux/module.h> 30 #include <linux/types.h> 31 #include <linux/i2c-id.h> 32 #include <linux/mod_devicetable.h> 33 #include <linux/device.h> /* for struct device */ 34 #include <linux/sched.h> /* for completion */ 35 #include <asm/semaphore.h> 36 37 /* --- For i2c-isa ---------------------------------------------------- */ 38 39 extern void i2c_adapter_dev_release(struct device *dev); 40 extern struct device_driver i2c_adapter_driver; 41 extern struct class i2c_adapter_class; 42 extern struct bus_type i2c_bus_type; 43 44 /* --- General options ------------------------------------------------ */ 45 46 struct i2c_msg; 47 struct i2c_algorithm; 48 struct i2c_adapter; 49 struct i2c_client; 50 struct i2c_driver; 51 union i2c_smbus_data; 52 53 /* 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. 58 */ 59 extern int i2c_master_send(struct i2c_client *,const char* ,int); 60 extern int i2c_master_recv(struct i2c_client *,char* ,int); 61 62 /* Transfer num messages. 63 */ 64 extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num); 65 66 /* 67 * Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor. 68 * This is not tested/implemented yet and will change in the future. 69 */ 70 extern int i2c_slave_send(struct i2c_client *,char*,int); 71 extern int i2c_slave_recv(struct i2c_client *,char*,int); 72 73 74 75 /* This is the very generalized SMBus access routine. You probably do not 76 want to use this, though; one of the functions below may be much easier, 77 and probably just as fast. 78 Note that we use i2c_adapter here, because you do not need a specific 79 smbus adapter to call this function. */ 80 extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr, 81 unsigned short flags, 82 char read_write, u8 command, int size, 83 union i2c_smbus_data * data); 84 85 /* Now follow the 'nice' access routines. These also document the calling 86 conventions of smbus_access. */ 87 88 extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value); 89 extern s32 i2c_smbus_read_byte(struct i2c_client * client); 90 extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value); 91 extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command); 92 extern s32 i2c_smbus_write_byte_data(struct i2c_client * client, 93 u8 command, u8 value); 94 extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command); 95 extern s32 i2c_smbus_write_word_data(struct i2c_client * client, 96 u8 command, u16 value); 97 extern s32 i2c_smbus_write_block_data(struct i2c_client * client, 98 u8 command, u8 length, 99 u8 *values); 100 /* Returns the number of read bytes */ 101 extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, 102 u8 command, u8 *values); 103 104 /* 105 * A driver is capable of handling one or more physical devices present on 106 * I2C adapters. This information is used to inform the driver of adapter 107 * events. 108 */ 109 110 struct i2c_driver { 111 struct module *owner; 112 char name[32]; 113 int id; 114 unsigned int class; 115 unsigned int flags; /* div., see below */ 116 117 /* Notifies the driver that a new bus has appeared. This routine 118 * can be used by the driver to test if the bus meets its conditions 119 * & seek for the presence of the chip(s) it supports. If found, it 120 * registers the client(s) that are on the bus to the i2c admin. via 121 * i2c_attach_client. 122 */ 123 int (*attach_adapter)(struct i2c_adapter *); 124 int (*detach_adapter)(struct i2c_adapter *); 125 126 /* tells the driver that a client is about to be deleted & gives it 127 * the chance to remove its private data. Also, if the client struct 128 * has been dynamically allocated by the driver in the function above, 129 * it must be freed here. 130 */ 131 int (*detach_client)(struct i2c_client *); 132 133 /* a ioctl like command that can be used to perform specific functions 134 * with the device. 135 */ 136 int (*command)(struct i2c_client *client,unsigned int cmd, void *arg); 137 138 struct device_driver driver; 139 struct list_head list; 140 }; 141 #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver) 142 143 #define I2C_NAME_SIZE 50 144 145 /* 146 * i2c_client identifies a single device (i.e. chip) that is connected to an 147 * i2c bus. The behaviour is defined by the routines of the driver. This 148 * function is mainly used for lookup & other admin. functions. 149 */ 150 struct i2c_client { 151 unsigned int flags; /* div., see below */ 152 unsigned short addr; /* chip address - NOTE: 7bit */ 153 /* addresses are stored in the */ 154 /* _LOWER_ 7 bits */ 155 struct i2c_adapter *adapter; /* the adapter we sit on */ 156 struct i2c_driver *driver; /* and our access routines */ 157 int usage_count; /* How many accesses currently */ 158 /* to the client */ 159 struct device dev; /* the device structure */ 160 struct list_head list; 161 char name[I2C_NAME_SIZE]; 162 struct completion released; 163 }; 164 #define to_i2c_client(d) container_of(d, struct i2c_client, dev) 165 166 static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) 167 { 168 return to_i2c_client(container_of(kobj, struct device, kobj)); 169 } 170 171 static inline void *i2c_get_clientdata (struct i2c_client *dev) 172 { 173 return dev_get_drvdata (&dev->dev); 174 } 175 176 static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) 177 { 178 dev_set_drvdata (&dev->dev, data); 179 } 180 181 /* 182 * The following structs are for those who like to implement new bus drivers: 183 * i2c_algorithm is the interface to a class of hardware solutions which can 184 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 185 * to name two of the most common. 186 */ 187 struct i2c_algorithm { 188 /* If an adapter algorithm can't do I2C-level access, set master_xfer 189 to NULL. If an adapter algorithm can do SMBus access, set 190 smbus_xfer. If set to NULL, the SMBus protocol is simulated 191 using common I2C messages */ 192 int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, 193 int num); 194 int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, 195 unsigned short flags, char read_write, 196 u8 command, int size, union i2c_smbus_data * data); 197 198 /* --- these optional/future use for some adapter types.*/ 199 int (*slave_send)(struct i2c_adapter *,char*,int); 200 int (*slave_recv)(struct i2c_adapter *,char*,int); 201 202 /* --- ioctl like call to set div. parameters. */ 203 int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long); 204 205 /* To determine what the adapter supports */ 206 u32 (*functionality) (struct i2c_adapter *); 207 }; 208 209 /* 210 * i2c_adapter is the structure used to identify a physical i2c bus along 211 * with the access algorithms necessary to access it. 212 */ 213 struct i2c_adapter { 214 struct module *owner; 215 unsigned int id; 216 unsigned int class; 217 struct i2c_algorithm *algo;/* the algorithm to access the bus */ 218 void *algo_data; 219 220 /* --- administration stuff. */ 221 int (*client_register)(struct i2c_client *); 222 int (*client_unregister)(struct i2c_client *); 223 224 /* data fields that are valid for all devices */ 225 struct semaphore bus_lock; 226 struct semaphore clist_lock; 227 228 int timeout; 229 int retries; 230 struct device dev; /* the adapter device */ 231 struct class_device class_dev; /* the class device */ 232 233 int nr; 234 struct list_head clients; 235 struct list_head list; 236 char name[I2C_NAME_SIZE]; 237 struct completion dev_released; 238 struct completion class_dev_released; 239 }; 240 #define dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) 241 #define class_dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, class_dev) 242 243 static inline void *i2c_get_adapdata (struct i2c_adapter *dev) 244 { 245 return dev_get_drvdata (&dev->dev); 246 } 247 248 static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) 249 { 250 dev_set_drvdata (&dev->dev, data); 251 } 252 253 /*flags for the driver struct: */ 254 #define I2C_DF_NOTIFY 0x01 /* notify on bus (de/a)ttaches */ 255 #if 0 256 /* this flag is gone -- there is a (optional) driver->detach_adapter 257 * callback now which can be used instead */ 258 # define I2C_DF_DUMMY 0x02 259 #endif 260 261 /*flags for the client struct: */ 262 #define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */ 263 #define I2C_CLIENT_ALLOW_MULTIPLE_USE 0x02 /* Allow multiple access-locks */ 264 /* on an i2c_client */ 265 #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ 266 #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ 267 /* Must equal I2C_M_TEN below */ 268 269 /* i2c adapter classes (bitmask) */ 270 #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ 271 #define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */ 272 #define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */ 273 #define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */ 274 #define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */ 275 #define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */ 276 #define I2C_CLASS_SOUND (1<<6) /* sound devices */ 277 #define I2C_CLASS_ALL (UINT_MAX) /* all of the above */ 278 279 /* i2c_client_address_data is the struct for holding default client 280 * addresses for a driver and for the parameters supplied on the 281 * command line 282 */ 283 struct i2c_client_address_data { 284 unsigned short *normal_i2c; 285 unsigned short *probe; 286 unsigned short *ignore; 287 unsigned short **forces; 288 }; 289 290 /* Internal numbers to terminate lists */ 291 #define I2C_CLIENT_END 0xfffeU 292 293 /* The numbers to use to set I2C bus address */ 294 #define ANY_I2C_BUS 0xffff 295 #define ANY_I2C_ISA_BUS 9191 296 297 298 /* ----- functions exported by i2c.o */ 299 300 /* administration... 301 */ 302 extern int i2c_add_adapter(struct i2c_adapter *); 303 extern int i2c_del_adapter(struct i2c_adapter *); 304 305 extern int i2c_add_driver(struct i2c_driver *); 306 extern int i2c_del_driver(struct i2c_driver *); 307 308 extern int i2c_attach_client(struct i2c_client *); 309 extern int i2c_detach_client(struct i2c_client *); 310 311 /* New function: This is to get an i2c_client-struct for controlling the 312 client either by using i2c_control-function or having the 313 client-module export functions that can be used with the i2c_client 314 -struct. */ 315 extern struct i2c_client *i2c_get_client(int driver_id, int adapter_id, 316 struct i2c_client *prev); 317 318 /* Should be used with new function 319 extern struct i2c_client *i2c_get_client(int,int,struct i2c_client *); 320 to make sure that client-struct is valid and that it is okay to access 321 the i2c-client. 322 returns -EACCES if client doesn't allow use (default) 323 returns -EBUSY if client doesn't allow multiple use (default) and 324 usage_count >0 */ 325 extern int i2c_use_client(struct i2c_client *); 326 extern int i2c_release_client(struct i2c_client *); 327 328 /* call the i2c_client->command() of all attached clients with 329 * the given arguments */ 330 extern void i2c_clients_command(struct i2c_adapter *adap, 331 unsigned int cmd, void *arg); 332 333 /* returns -EBUSY if address has been taken, 0 if not. Note that the only 334 other place at which this is called is within i2c_attach_client; so 335 you can cheat by simply not registering. Not recommended, of course! */ 336 extern int i2c_check_addr (struct i2c_adapter *adapter, int addr); 337 338 /* Detect function. It iterates over all possible addresses itself. 339 * It will only call found_proc if some client is connected at the 340 * specific address (unless a 'force' matched); 341 */ 342 extern int i2c_probe(struct i2c_adapter *adapter, 343 struct i2c_client_address_data *address_data, 344 int (*found_proc) (struct i2c_adapter *, int, int)); 345 346 /* An ioctl like call to set div. parameters of the adapter. 347 */ 348 extern int i2c_control(struct i2c_client *,unsigned int, unsigned long); 349 350 extern struct i2c_adapter* i2c_get_adapter(int id); 351 extern void i2c_put_adapter(struct i2c_adapter *adap); 352 353 354 /* Return the functionality mask */ 355 static inline u32 i2c_get_functionality(struct i2c_adapter *adap) 356 { 357 return adap->algo->functionality(adap); 358 } 359 360 /* Return 1 if adapter supports everything we need, 0 if not. */ 361 static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func) 362 { 363 return (func & i2c_get_functionality(adap)) == func; 364 } 365 366 /* Return id number for a specific adapter */ 367 static inline int i2c_adapter_id(struct i2c_adapter *adap) 368 { 369 return adap->nr; 370 } 371 372 /* 373 * I2C Message - used for pure i2c transaction, also from /dev interface 374 */ 375 struct i2c_msg { 376 __u16 addr; /* slave address */ 377 __u16 flags; 378 #define I2C_M_TEN 0x10 /* we have a ten bit chip address */ 379 #define I2C_M_RD 0x01 380 #define I2C_M_NOSTART 0x4000 381 #define I2C_M_REV_DIR_ADDR 0x2000 382 #define I2C_M_IGNORE_NAK 0x1000 383 #define I2C_M_NO_RD_ACK 0x0800 384 __u16 len; /* msg length */ 385 __u8 *buf; /* pointer to msg data */ 386 }; 387 388 /* To determine what functionality is present */ 389 390 #define I2C_FUNC_I2C 0x00000001 391 #define I2C_FUNC_10BIT_ADDR 0x00000002 392 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ 393 #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ 394 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ 395 #define I2C_FUNC_SMBUS_QUICK 0x00010000 396 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 397 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 398 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 399 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 400 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 401 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 402 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 403 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 404 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 405 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ 406 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ 407 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ 408 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ 409 410 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ 411 I2C_FUNC_SMBUS_WRITE_BYTE) 412 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ 413 I2C_FUNC_SMBUS_WRITE_BYTE_DATA) 414 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ 415 I2C_FUNC_SMBUS_WRITE_WORD_DATA) 416 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ 417 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) 418 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ 419 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) 420 #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ 421 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2) 422 423 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ 424 I2C_FUNC_SMBUS_BYTE | \ 425 I2C_FUNC_SMBUS_BYTE_DATA | \ 426 I2C_FUNC_SMBUS_WORD_DATA | \ 427 I2C_FUNC_SMBUS_PROC_CALL | \ 428 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ 429 I2C_FUNC_SMBUS_I2C_BLOCK) 430 431 /* 432 * Data for SMBus Messages 433 */ 434 #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ 435 union i2c_smbus_data { 436 __u8 byte; 437 __u16 word; 438 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ 439 /* and one more for user-space compatibility */ 440 }; 441 442 /* smbus_access read or write markers */ 443 #define I2C_SMBUS_READ 1 444 #define I2C_SMBUS_WRITE 0 445 446 /* SMBus transaction types (size parameter in the above functions) 447 Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */ 448 #define I2C_SMBUS_QUICK 0 449 #define I2C_SMBUS_BYTE 1 450 #define I2C_SMBUS_BYTE_DATA 2 451 #define I2C_SMBUS_WORD_DATA 3 452 #define I2C_SMBUS_PROC_CALL 4 453 #define I2C_SMBUS_BLOCK_DATA 5 454 #define I2C_SMBUS_I2C_BLOCK_DATA 6 455 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ 456 457 458 /* ----- commands for the ioctl like i2c_command call: 459 * note that additional calls are defined in the algorithm and hw 460 * dependent layers - these can be listed here, or see the 461 * corresponding header files. 462 */ 463 /* -> bit-adapter specific ioctls */ 464 #define I2C_RETRIES 0x0701 /* number of times a device address */ 465 /* should be polled when not */ 466 /* acknowledging */ 467 #define I2C_TIMEOUT 0x0702 /* set timeout - call with int */ 468 469 470 /* this is for i2c-dev.c */ 471 #define I2C_SLAVE 0x0703 /* Change slave address */ 472 /* Attn.: Slave address is 7 or 10 bits */ 473 #define I2C_SLAVE_FORCE 0x0706 /* Change slave address */ 474 /* Attn.: Slave address is 7 or 10 bits */ 475 /* This changes the address, even if it */ 476 /* is already taken! */ 477 #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ 478 479 #define I2C_FUNCS 0x0705 /* Get the adapter functionality */ 480 #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/ 481 #define I2C_PEC 0x0708 /* != 0 for SMBus PEC */ 482 483 #define I2C_SMBUS 0x0720 /* SMBus-level access */ 484 485 /* ----- I2C-DEV: char device interface stuff ------------------------- */ 486 487 #define I2C_MAJOR 89 /* Device major number */ 488 489 /* These defines are used for probing i2c client addresses */ 490 /* The length of the option lists */ 491 #define I2C_CLIENT_MAX_OPTS 48 492 493 /* Default fill of many variables */ 494 #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 495 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 496 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 497 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 498 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 499 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 500 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 501 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 502 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 503 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 504 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 505 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 506 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 507 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 508 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 509 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END} 510 511 /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the 512 module header */ 513 514 #define I2C_CLIENT_MODULE_PARM(var,desc) \ 515 static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \ 516 static unsigned int var##_num; \ 517 module_param_array(var, short, &var##_num, 0); \ 518 MODULE_PARM_DESC(var,desc) 519 520 #define I2C_CLIENT_MODULE_PARM_FORCE(name) \ 521 I2C_CLIENT_MODULE_PARM(force_##name, \ 522 "List of adapter,address pairs which are " \ 523 "unquestionably assumed to contain a `" \ 524 # name "' chip") 525 526 527 #define I2C_CLIENT_INSMOD_COMMON \ 528 I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \ 529 "additionally"); \ 530 I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \ 531 "scan"); \ 532 static struct i2c_client_address_data addr_data = { \ 533 .normal_i2c = normal_i2c, \ 534 .probe = probe, \ 535 .ignore = ignore, \ 536 .forces = forces, \ 537 } 538 539 /* These are the ones you want to use in your own drivers. Pick the one 540 which matches the number of devices the driver differenciates between. */ 541 #define I2C_CLIENT_INSMOD \ 542 I2C_CLIENT_MODULE_PARM(force, \ 543 "List of adapter,address pairs to boldly assume " \ 544 "to be present"); \ 545 static unsigned short *forces[] = { \ 546 force, \ 547 NULL \ 548 }; \ 549 I2C_CLIENT_INSMOD_COMMON 550 551 #define I2C_CLIENT_INSMOD_1(chip1) \ 552 enum chips { any_chip, chip1 }; \ 553 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 554 "boldly assume to be present"); \ 555 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 556 static unsigned short *forces[] = { force, force_##chip1, NULL }; \ 557 I2C_CLIENT_INSMOD_COMMON 558 559 #define I2C_CLIENT_INSMOD_2(chip1, chip2) \ 560 enum chips { any_chip, chip1, chip2 }; \ 561 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 562 "boldly assume to be present"); \ 563 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 564 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 565 static unsigned short *forces[] = { force, force_##chip1, \ 566 force_##chip2, NULL }; \ 567 I2C_CLIENT_INSMOD_COMMON 568 569 #define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \ 570 enum chips { any_chip, chip1, chip2, chip3 }; \ 571 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 572 "boldly assume to be present"); \ 573 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 574 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 575 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 576 static unsigned short *forces[] = { force, force_##chip1, \ 577 force_##chip2, force_##chip3, \ 578 NULL }; \ 579 I2C_CLIENT_INSMOD_COMMON 580 581 #define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \ 582 enum chips { any_chip, chip1, chip2, chip3, chip4 }; \ 583 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 584 "boldly assume to be present"); \ 585 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 586 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 587 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 588 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 589 static unsigned short *forces[] = { force, force_##chip1, \ 590 force_##chip2, force_##chip3, \ 591 force_##chip4, NULL}; \ 592 I2C_CLIENT_INSMOD_COMMON 593 594 #define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \ 595 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \ 596 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 597 "boldly assume to be present"); \ 598 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 599 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 600 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 601 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 602 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 603 static unsigned short *forces[] = { force, force_##chip1, \ 604 force_##chip2, force_##chip3, \ 605 force_##chip4, force_##chip5, \ 606 NULL }; \ 607 I2C_CLIENT_INSMOD_COMMON 608 609 #define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \ 610 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \ 611 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 612 "boldly assume to be present"); \ 613 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 614 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 615 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 616 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 617 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 618 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 619 static unsigned short *forces[] = { force, force_##chip1, \ 620 force_##chip2, force_##chip3, \ 621 force_##chip4, force_##chip5, \ 622 force_##chip6, NULL }; \ 623 I2C_CLIENT_INSMOD_COMMON 624 625 #define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \ 626 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ 627 chip7 }; \ 628 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 629 "boldly assume to be present"); \ 630 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 631 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 632 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 633 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 634 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 635 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 636 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ 637 static unsigned short *forces[] = { force, force_##chip1, \ 638 force_##chip2, force_##chip3, \ 639 force_##chip4, force_##chip5, \ 640 force_##chip6, force_##chip7, \ 641 NULL }; \ 642 I2C_CLIENT_INSMOD_COMMON 643 644 #define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \ 645 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ 646 chip7, chip8 }; \ 647 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 648 "boldly assume to be present"); \ 649 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 650 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 651 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 652 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 653 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 654 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 655 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ 656 I2C_CLIENT_MODULE_PARM_FORCE(chip8); \ 657 static unsigned short *forces[] = { force, force_##chip1, \ 658 force_##chip2, force_##chip3, \ 659 force_##chip4, force_##chip5, \ 660 force_##chip6, force_##chip7, \ 661 force_##chip8, NULL }; \ 662 I2C_CLIENT_INSMOD_COMMON 663 664 #endif /* _LINUX_I2C_H */ 665