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 Kysti Mlkki <kmalkki (at) cc.hut.fi> and 24 Frodo Looijaard <frodol (at) dds.nl> */ 25 26 #ifndef _LINUX_I2C_H 27 #define _LINUX_I2C_H 28 29 #include <linux/types.h> 30 #ifdef __KERNEL__ 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> 37 38 /* --- For i2c-isa ---------------------------------------------------- */ 39 40 extern void i2c_adapter_dev_release(struct device *dev); 41 extern struct device_driver i2c_adapter_driver; 42 extern struct class i2c_adapter_class; 43 extern struct bus_type i2c_bus_type; 44 45 /* --- General options ------------------------------------------------ */ 46 47 struct i2c_msg; 48 struct i2c_algorithm; 49 struct i2c_adapter; 50 struct i2c_client; 51 struct i2c_driver; 52 union i2c_smbus_data; 53 54 /* 55 * The master routines are the ones normally used to transmit data to devices 56 * on a bus (or read from them). Apart from two basic transfer functions to 57 * transmit one message at a time, a more complex version can be used to 58 * transmit an arbitrary number of messages without interruption. 59 */ 60 extern int i2c_master_send(struct i2c_client *,const char* ,int); 61 extern int i2c_master_recv(struct i2c_client *,char* ,int); 62 63 /* Transfer num messages. 64 */ 65 extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num); 66 67 /* 68 * Some adapter types (i.e. PCF 8584 based ones) may support slave behaviuor. 69 * This is not tested/implemented yet and will change in the future. 70 */ 71 extern int i2c_slave_send(struct i2c_client *,char*,int); 72 extern int i2c_slave_recv(struct i2c_client *,char*,int); 73 74 75 76 /* This is the very generalized SMBus access routine. You probably do not 77 want to use this, though; one of the functions below may be much easier, 78 and probably just as fast. 79 Note that we use i2c_adapter here, because you do not need a specific 80 smbus adapter to call this function. */ 81 extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr, 82 unsigned short flags, 83 char read_write, u8 command, int size, 84 union i2c_smbus_data * data); 85 86 /* Now follow the 'nice' access routines. These also document the calling 87 conventions of smbus_access. */ 88 89 extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value); 90 extern s32 i2c_smbus_read_byte(struct i2c_client * client); 91 extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value); 92 extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command); 93 extern s32 i2c_smbus_write_byte_data(struct i2c_client * client, 94 u8 command, u8 value); 95 extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command); 96 extern s32 i2c_smbus_write_word_data(struct i2c_client * client, 97 u8 command, u16 value); 98 extern s32 i2c_smbus_write_block_data(struct i2c_client * client, 99 u8 command, u8 length, 100 const u8 *values); 101 /* Returns the number of read bytes */ 102 extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, 103 u8 command, u8 *values); 104 extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client, 105 u8 command, u8 length, 106 const u8 *values); 107 108 /* 109 * A driver is capable of handling one or more physical devices present on 110 * I2C adapters. This information is used to inform the driver of adapter 111 * events. 112 * 113 * The driver.owner field should be set to the module owner of this driver. 114 * The driver.name field should be set to the name of this driver. 115 */ 116 117 struct i2c_driver { 118 int id; 119 unsigned int class; 120 121 /* Notifies the driver that a new bus has appeared. This routine 122 * can be used by the driver to test if the bus meets its conditions 123 * & seek for the presence of the chip(s) it supports. If found, it 124 * registers the client(s) that are on the bus to the i2c admin. via 125 * i2c_attach_client. 126 */ 127 int (*attach_adapter)(struct i2c_adapter *); 128 int (*detach_adapter)(struct i2c_adapter *); 129 130 /* tells the driver that a client is about to be deleted & gives it 131 * the chance to remove its private data. Also, if the client struct 132 * has been dynamically allocated by the driver in the function above, 133 * it must be freed here. 134 */ 135 int (*detach_client)(struct i2c_client *); 136 137 /* a ioctl like command that can be used to perform specific functions 138 * with the device. 139 */ 140 int (*command)(struct i2c_client *client,unsigned int cmd, void *arg); 141 142 struct device_driver driver; 143 struct list_head list; 144 }; 145 #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver) 146 147 #define I2C_NAME_SIZE 50 148 149 /* 150 * i2c_client identifies a single device (i.e. chip) that is connected to an 151 * i2c bus. The behaviour is defined by the routines of the driver. This 152 * function is mainly used for lookup & other admin. functions. 153 */ 154 struct i2c_client { 155 unsigned int flags; /* div., see below */ 156 unsigned short addr; /* chip address - NOTE: 7bit */ 157 /* addresses are stored in the */ 158 /* _LOWER_ 7 bits */ 159 struct i2c_adapter *adapter; /* the adapter we sit on */ 160 struct i2c_driver *driver; /* and our access routines */ 161 int usage_count; /* How many accesses currently */ 162 /* to the client */ 163 struct device dev; /* the device structure */ 164 struct list_head list; 165 char name[I2C_NAME_SIZE]; 166 struct completion released; 167 }; 168 #define to_i2c_client(d) container_of(d, struct i2c_client, dev) 169 170 static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) 171 { 172 return to_i2c_client(container_of(kobj, struct device, kobj)); 173 } 174 175 static inline void *i2c_get_clientdata (struct i2c_client *dev) 176 { 177 return dev_get_drvdata (&dev->dev); 178 } 179 180 static inline void i2c_set_clientdata (struct i2c_client *dev, void *data) 181 { 182 dev_set_drvdata (&dev->dev, data); 183 } 184 185 /* 186 * The following structs are for those who like to implement new bus drivers: 187 * i2c_algorithm is the interface to a class of hardware solutions which can 188 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 189 * to name two of the most common. 190 */ 191 struct i2c_algorithm { 192 /* If an adapter algorithm can't do I2C-level access, set master_xfer 193 to NULL. If an adapter algorithm can do SMBus access, set 194 smbus_xfer. If set to NULL, the SMBus protocol is simulated 195 using common I2C messages */ 196 /* master_xfer should return the number of messages successfully 197 processed, or a negative value on error */ 198 int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs, 199 int num); 200 int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr, 201 unsigned short flags, char read_write, 202 u8 command, int size, union i2c_smbus_data * data); 203 204 /* --- these optional/future use for some adapter types.*/ 205 int (*slave_send)(struct i2c_adapter *,char*,int); 206 int (*slave_recv)(struct i2c_adapter *,char*,int); 207 208 /* --- ioctl like call to set div. parameters. */ 209 int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long); 210 211 /* To determine what the adapter supports */ 212 u32 (*functionality) (struct i2c_adapter *); 213 }; 214 215 /* 216 * i2c_adapter is the structure used to identify a physical i2c bus along 217 * with the access algorithms necessary to access it. 218 */ 219 struct i2c_adapter { 220 struct module *owner; 221 unsigned int id; 222 unsigned int class; 223 struct i2c_algorithm *algo;/* the algorithm to access the bus */ 224 void *algo_data; 225 226 /* --- administration stuff. */ 227 int (*client_register)(struct i2c_client *); 228 int (*client_unregister)(struct i2c_client *); 229 230 /* data fields that are valid for all devices */ 231 struct mutex bus_lock; 232 struct mutex clist_lock; 233 234 int timeout; 235 int retries; 236 struct device dev; /* the adapter device */ 237 struct class_device class_dev; /* the class device */ 238 239 int nr; 240 struct list_head clients; 241 struct list_head list; 242 char name[I2C_NAME_SIZE]; 243 struct completion dev_released; 244 struct completion class_dev_released; 245 }; 246 #define dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) 247 #define class_dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, class_dev) 248 249 static inline void *i2c_get_adapdata (struct i2c_adapter *dev) 250 { 251 return dev_get_drvdata (&dev->dev); 252 } 253 254 static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) 255 { 256 dev_set_drvdata (&dev->dev, data); 257 } 258 259 /*flags for the client struct: */ 260 #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ 261 #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ 262 /* Must equal I2C_M_TEN below */ 263 264 /* i2c adapter classes (bitmask) */ 265 #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ 266 #define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */ 267 #define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */ 268 #define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */ 269 #define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */ 270 #define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */ 271 #define I2C_CLASS_SOUND (1<<6) /* sound devices */ 272 #define I2C_CLASS_ALL (UINT_MAX) /* all of the above */ 273 274 /* i2c_client_address_data is the struct for holding default client 275 * addresses for a driver and for the parameters supplied on the 276 * command line 277 */ 278 struct i2c_client_address_data { 279 unsigned short *normal_i2c; 280 unsigned short *probe; 281 unsigned short *ignore; 282 unsigned short **forces; 283 }; 284 285 /* Internal numbers to terminate lists */ 286 #define I2C_CLIENT_END 0xfffeU 287 288 /* The numbers to use to set I2C bus address */ 289 #define ANY_I2C_BUS 0xffff 290 #define ANY_I2C_ISA_BUS 9191 291 292 293 /* ----- functions exported by i2c.o */ 294 295 /* administration... 296 */ 297 extern int i2c_add_adapter(struct i2c_adapter *); 298 extern int i2c_del_adapter(struct i2c_adapter *); 299 300 extern int i2c_register_driver(struct module *, struct i2c_driver *); 301 extern int i2c_del_driver(struct i2c_driver *); 302 303 static inline int i2c_add_driver(struct i2c_driver *driver) 304 { 305 return i2c_register_driver(THIS_MODULE, driver); 306 } 307 308 extern int i2c_attach_client(struct i2c_client *); 309 extern int i2c_detach_client(struct i2c_client *); 310 311 /* Should be used to make sure that client-struct is valid and that it 312 is okay to access the i2c-client. 313 returns -ENODEV if client has gone in the meantime */ 314 extern int i2c_use_client(struct i2c_client *); 315 extern int i2c_release_client(struct i2c_client *); 316 317 /* call the i2c_client->command() of all attached clients with 318 * the given arguments */ 319 extern void i2c_clients_command(struct i2c_adapter *adap, 320 unsigned int cmd, void *arg); 321 322 /* returns -EBUSY if address has been taken, 0 if not. Note that the only 323 other place at which this is called is within i2c_attach_client; so 324 you can cheat by simply not registering. Not recommended, of course! */ 325 extern int i2c_check_addr (struct i2c_adapter *adapter, int addr); 326 327 /* Detect function. It iterates over all possible addresses itself. 328 * It will only call found_proc if some client is connected at the 329 * specific address (unless a 'force' matched); 330 */ 331 extern int i2c_probe(struct i2c_adapter *adapter, 332 struct i2c_client_address_data *address_data, 333 int (*found_proc) (struct i2c_adapter *, int, int)); 334 335 /* An ioctl like call to set div. parameters of the adapter. 336 */ 337 extern int i2c_control(struct i2c_client *,unsigned int, unsigned long); 338 339 extern struct i2c_adapter* i2c_get_adapter(int id); 340 extern void i2c_put_adapter(struct i2c_adapter *adap); 341 342 343 /* Return the functionality mask */ 344 static inline u32 i2c_get_functionality(struct i2c_adapter *adap) 345 { 346 return adap->algo->functionality(adap); 347 } 348 349 /* Return 1 if adapter supports everything we need, 0 if not. */ 350 static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func) 351 { 352 return (func & i2c_get_functionality(adap)) == func; 353 } 354 355 /* Return id number for a specific adapter */ 356 static inline int i2c_adapter_id(struct i2c_adapter *adap) 357 { 358 return adap->nr; 359 } 360 #endif /* __KERNEL__ */ 361 362 /* 363 * I2C Message - used for pure i2c transaction, also from /dev interface 364 */ 365 struct i2c_msg { 366 __u16 addr; /* slave address */ 367 __u16 flags; 368 #define I2C_M_TEN 0x10 /* we have a ten bit chip address */ 369 #define I2C_M_RD 0x01 370 #define I2C_M_NOSTART 0x4000 371 #define I2C_M_REV_DIR_ADDR 0x2000 372 #define I2C_M_IGNORE_NAK 0x1000 373 #define I2C_M_NO_RD_ACK 0x0800 374 __u16 len; /* msg length */ 375 __u8 *buf; /* pointer to msg data */ 376 }; 377 378 /* To determine what functionality is present */ 379 380 #define I2C_FUNC_I2C 0x00000001 381 #define I2C_FUNC_10BIT_ADDR 0x00000002 382 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ 383 #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ 384 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ 385 #define I2C_FUNC_SMBUS_QUICK 0x00010000 386 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 387 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 388 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 389 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 390 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 391 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 392 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 393 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 394 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 395 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ 396 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ 397 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */ 398 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */ 399 400 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ 401 I2C_FUNC_SMBUS_WRITE_BYTE) 402 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ 403 I2C_FUNC_SMBUS_WRITE_BYTE_DATA) 404 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ 405 I2C_FUNC_SMBUS_WRITE_WORD_DATA) 406 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ 407 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) 408 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ 409 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) 410 #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \ 411 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2) 412 413 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ 414 I2C_FUNC_SMBUS_BYTE | \ 415 I2C_FUNC_SMBUS_BYTE_DATA | \ 416 I2C_FUNC_SMBUS_WORD_DATA | \ 417 I2C_FUNC_SMBUS_PROC_CALL | \ 418 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ 419 I2C_FUNC_SMBUS_I2C_BLOCK) 420 421 /* 422 * Data for SMBus Messages 423 */ 424 #define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ 425 union i2c_smbus_data { 426 __u8 byte; 427 __u16 word; 428 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ 429 /* and one more for user-space compatibility */ 430 }; 431 432 /* smbus_access read or write markers */ 433 #define I2C_SMBUS_READ 1 434 #define I2C_SMBUS_WRITE 0 435 436 /* SMBus transaction types (size parameter in the above functions) 437 Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */ 438 #define I2C_SMBUS_QUICK 0 439 #define I2C_SMBUS_BYTE 1 440 #define I2C_SMBUS_BYTE_DATA 2 441 #define I2C_SMBUS_WORD_DATA 3 442 #define I2C_SMBUS_PROC_CALL 4 443 #define I2C_SMBUS_BLOCK_DATA 5 444 #define I2C_SMBUS_I2C_BLOCK_DATA 6 445 #define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ 446 447 448 /* ----- commands for the ioctl like i2c_command call: 449 * note that additional calls are defined in the algorithm and hw 450 * dependent layers - these can be listed here, or see the 451 * corresponding header files. 452 */ 453 /* -> bit-adapter specific ioctls */ 454 #define I2C_RETRIES 0x0701 /* number of times a device address */ 455 /* should be polled when not */ 456 /* acknowledging */ 457 #define I2C_TIMEOUT 0x0702 /* set timeout - call with int */ 458 459 460 /* this is for i2c-dev.c */ 461 #define I2C_SLAVE 0x0703 /* Change slave address */ 462 /* Attn.: Slave address is 7 or 10 bits */ 463 #define I2C_SLAVE_FORCE 0x0706 /* Change slave address */ 464 /* Attn.: Slave address is 7 or 10 bits */ 465 /* This changes the address, even if it */ 466 /* is already taken! */ 467 #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ 468 469 #define I2C_FUNCS 0x0705 /* Get the adapter functionality */ 470 #define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/ 471 #define I2C_PEC 0x0708 /* != 0 for SMBus PEC */ 472 473 #define I2C_SMBUS 0x0720 /* SMBus-level access */ 474 475 /* ----- I2C-DEV: char device interface stuff ------------------------- */ 476 #ifdef __KERNEL__ 477 478 #define I2C_MAJOR 89 /* Device major number */ 479 480 /* These defines are used for probing i2c client addresses */ 481 /* The length of the option lists */ 482 #define I2C_CLIENT_MAX_OPTS 48 483 484 /* Default fill of many variables */ 485 #define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 486 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 487 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 488 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 489 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 490 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 491 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 492 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 493 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \ 494 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} 501 502 /* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the 503 module header */ 504 505 #define I2C_CLIENT_MODULE_PARM(var,desc) \ 506 static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \ 507 static unsigned int var##_num; \ 508 module_param_array(var, short, &var##_num, 0); \ 509 MODULE_PARM_DESC(var,desc) 510 511 #define I2C_CLIENT_MODULE_PARM_FORCE(name) \ 512 I2C_CLIENT_MODULE_PARM(force_##name, \ 513 "List of adapter,address pairs which are " \ 514 "unquestionably assumed to contain a `" \ 515 # name "' chip") 516 517 518 #define I2C_CLIENT_INSMOD_COMMON \ 519 I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \ 520 "additionally"); \ 521 I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \ 522 "scan"); \ 523 static struct i2c_client_address_data addr_data = { \ 524 .normal_i2c = normal_i2c, \ 525 .probe = probe, \ 526 .ignore = ignore, \ 527 .forces = forces, \ 528 } 529 530 /* These are the ones you want to use in your own drivers. Pick the one 531 which matches the number of devices the driver differenciates between. */ 532 #define I2C_CLIENT_INSMOD \ 533 I2C_CLIENT_MODULE_PARM(force, \ 534 "List of adapter,address pairs to boldly assume " \ 535 "to be present"); \ 536 static unsigned short *forces[] = { \ 537 force, \ 538 NULL \ 539 }; \ 540 I2C_CLIENT_INSMOD_COMMON 541 542 #define I2C_CLIENT_INSMOD_1(chip1) \ 543 enum chips { any_chip, chip1 }; \ 544 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 545 "boldly assume to be present"); \ 546 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 547 static unsigned short *forces[] = { force, force_##chip1, NULL }; \ 548 I2C_CLIENT_INSMOD_COMMON 549 550 #define I2C_CLIENT_INSMOD_2(chip1, chip2) \ 551 enum chips { any_chip, chip1, chip2 }; \ 552 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 553 "boldly assume to be present"); \ 554 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 555 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 556 static unsigned short *forces[] = { force, force_##chip1, \ 557 force_##chip2, NULL }; \ 558 I2C_CLIENT_INSMOD_COMMON 559 560 #define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \ 561 enum chips { any_chip, chip1, chip2, chip3 }; \ 562 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 563 "boldly assume to be present"); \ 564 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 565 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 566 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 567 static unsigned short *forces[] = { force, force_##chip1, \ 568 force_##chip2, force_##chip3, \ 569 NULL }; \ 570 I2C_CLIENT_INSMOD_COMMON 571 572 #define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \ 573 enum chips { any_chip, chip1, chip2, chip3, chip4 }; \ 574 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 575 "boldly assume to be present"); \ 576 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 577 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 578 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 579 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 580 static unsigned short *forces[] = { force, force_##chip1, \ 581 force_##chip2, force_##chip3, \ 582 force_##chip4, NULL}; \ 583 I2C_CLIENT_INSMOD_COMMON 584 585 #define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \ 586 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \ 587 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 588 "boldly assume to be present"); \ 589 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 590 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 591 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 592 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 593 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 594 static unsigned short *forces[] = { force, force_##chip1, \ 595 force_##chip2, force_##chip3, \ 596 force_##chip4, force_##chip5, \ 597 NULL }; \ 598 I2C_CLIENT_INSMOD_COMMON 599 600 #define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \ 601 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \ 602 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 603 "boldly assume to be present"); \ 604 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 605 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 606 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 607 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 608 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 609 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 610 static unsigned short *forces[] = { force, force_##chip1, \ 611 force_##chip2, force_##chip3, \ 612 force_##chip4, force_##chip5, \ 613 force_##chip6, NULL }; \ 614 I2C_CLIENT_INSMOD_COMMON 615 616 #define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \ 617 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ 618 chip7 }; \ 619 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 620 "boldly assume to be present"); \ 621 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 622 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 623 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 624 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 625 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 626 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 627 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ 628 static unsigned short *forces[] = { force, force_##chip1, \ 629 force_##chip2, force_##chip3, \ 630 force_##chip4, force_##chip5, \ 631 force_##chip6, force_##chip7, \ 632 NULL }; \ 633 I2C_CLIENT_INSMOD_COMMON 634 635 #define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \ 636 enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \ 637 chip7, chip8 }; \ 638 I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \ 639 "boldly assume to be present"); \ 640 I2C_CLIENT_MODULE_PARM_FORCE(chip1); \ 641 I2C_CLIENT_MODULE_PARM_FORCE(chip2); \ 642 I2C_CLIENT_MODULE_PARM_FORCE(chip3); \ 643 I2C_CLIENT_MODULE_PARM_FORCE(chip4); \ 644 I2C_CLIENT_MODULE_PARM_FORCE(chip5); \ 645 I2C_CLIENT_MODULE_PARM_FORCE(chip6); \ 646 I2C_CLIENT_MODULE_PARM_FORCE(chip7); \ 647 I2C_CLIENT_MODULE_PARM_FORCE(chip8); \ 648 static unsigned short *forces[] = { force, force_##chip1, \ 649 force_##chip2, force_##chip3, \ 650 force_##chip4, force_##chip5, \ 651 force_##chip6, force_##chip7, \ 652 force_##chip8, NULL }; \ 653 I2C_CLIENT_INSMOD_COMMON 654 #endif /* __KERNEL__ */ 655 #endif /* _LINUX_I2C_H */ 656
