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i2c: Add support for nested i2c bus locking
[mirror_ubuntu-bionic-kernel.git] / include / linux / i2c.h
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1da177e4
LT		 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
a1b9298e 23/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and
1da177e4
LT		 24 Frodo Looijaard <frodol@dds.nl> */
25
1da177e4
LT		 26#ifndef _LINUX_I2C_H
27#define _LINUX_I2C_H
28
1da177e4 29#include <linux/types.h>
a1b9298e
DW		 30#ifdef __KERNEL__
31#include <linux/module.h>
1da177e4 32#include <linux/i2c-id.h>
a9d1b24d 33#include <linux/mod_devicetable.h>
1da177e4 34#include <linux/device.h> /* for struct device */
4e57b681 35#include <linux/sched.h> /* for completion */
5c085d36 36#include <linux/mutex.h>
1da177e4 37
efde723f
JD		 38/* --- For i2c-isa ---------------------------------------------------- */
39
40extern void i2c_adapter_dev_release(struct device *dev);
41extern struct device_driver i2c_adapter_driver;
42extern struct class i2c_adapter_class;
43extern struct bus_type i2c_bus_type;
44
1da177e4
LT		 45/* --- General options ------------------------------------------------ */
46
47struct i2c_msg;
48struct i2c_algorithm;
49struct i2c_adapter;
50struct i2c_client;
51struct i2c_driver;
1da177e4
LT		 52union 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 */
60extern int i2c_master_send(struct i2c_client *,const char* ,int);
61extern int i2c_master_recv(struct i2c_client *,char* ,int);
62
63/* Transfer num messages.
64 */
65extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
66
1da177e4
LT		 67
68/* This is the very generalized SMBus access routine. You probably do not
69 want to use this, though; one of the functions below may be much easier,
70 and probably just as fast.
71 Note that we use i2c_adapter here, because you do not need a specific
72 smbus adapter to call this function. */
73extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr,
74 unsigned short flags,
75 char read_write, u8 command, int size,
76 union i2c_smbus_data * data);
77
78/* Now follow the 'nice' access routines. These also document the calling
79 conventions of smbus_access. */
80
81extern s32 i2c_smbus_write_quick(struct i2c_client * client, u8 value);
82extern s32 i2c_smbus_read_byte(struct i2c_client * client);
83extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value);
84extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command);
85extern s32 i2c_smbus_write_byte_data(struct i2c_client * client,
86 u8 command, u8 value);
87extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command);
88extern s32 i2c_smbus_write_word_data(struct i2c_client * client,
89 u8 command, u16 value);
1da177e4
LT		 90extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
91 u8 command, u8 length,
46f5ed75 92 const u8 *values);
31ec5bc5 93/* Returns the number of read bytes */
1da177e4
LT		 94extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
95 u8 command, u8 *values);
21bbd691
JD		 96extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
97 u8 command, u8 length,
46f5ed75 98 const u8 *values);
1da177e4
LT		 99
100/*
101 * A driver is capable of handling one or more physical devices present on
102 * I2C adapters. This information is used to inform the driver of adapter
103 * events.
35d8b2e6
LR		 104 *
105 * The driver.owner field should be set to the module owner of this driver.
106 * The driver.name field should be set to the name of this driver.
1da177e4
LT		 107 */
108
109struct i2c_driver {
1da177e4
LT		 110 int id;
111 unsigned int class;
1da177e4
LT		 112
113 /* Notifies the driver that a new bus has appeared. This routine
114 * can be used by the driver to test if the bus meets its conditions
115 * & seek for the presence of the chip(s) it supports. If found, it
116 * registers the client(s) that are on the bus to the i2c admin. via
117 * i2c_attach_client.
118 */
119 int (*attach_adapter)(struct i2c_adapter *);
120 int (*detach_adapter)(struct i2c_adapter *);
121
122 /* tells the driver that a client is about to be deleted & gives it
123 * the chance to remove its private data. Also, if the client struct
124 * has been dynamically allocated by the driver in the function above,
125 * it must be freed here.
126 */
127 int (*detach_client)(struct i2c_client *);
128
129 /* a ioctl like command that can be used to perform specific functions
130 * with the device.
131 */
132 int (*command)(struct i2c_client *client,unsigned int cmd, void *arg);
133
134 struct device_driver driver;
135 struct list_head list;
136};
137#define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
138
139#define I2C_NAME_SIZE 50
140
141/*
142 * i2c_client identifies a single device (i.e. chip) that is connected to an
143 * i2c bus. The behaviour is defined by the routines of the driver. This
144 * function is mainly used for lookup & other admin. functions.
145 */
146struct i2c_client {
147 unsigned int flags; /* div., see below */
5071860a 148 unsigned short addr; /* chip address - NOTE: 7bit */
1da177e4 149 /* addresses are stored in the */
5071860a 150 /* _LOWER_ 7 bits */
1da177e4
LT		 151 struct i2c_adapter *adapter; /* the adapter we sit on */
152 struct i2c_driver *driver; /* and our access routines */
153 int usage_count; /* How many accesses currently */
154 /* to the client */
155 struct device dev; /* the device structure */
156 struct list_head list;
157 char name[I2C_NAME_SIZE];
158 struct completion released;
159};
160#define to_i2c_client(d) container_of(d, struct i2c_client, dev)
161
a61fc683
BG		 162static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
163{
164 return to_i2c_client(container_of(kobj, struct device, kobj));
165}
166
1da177e4
LT		 167static inline void *i2c_get_clientdata (struct i2c_client *dev)
168{
169 return dev_get_drvdata (&dev->dev);
170}
171
172static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
173{
174 dev_set_drvdata (&dev->dev, data);
175}
176
1da177e4
LT		 177/*
178 * The following structs are for those who like to implement new bus drivers:
179 * i2c_algorithm is the interface to a class of hardware solutions which can
180 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
181 * to name two of the most common.
182 */
183struct i2c_algorithm {
1da177e4
LT		 184 /* If an adapter algorithm can't do I2C-level access, set master_xfer
185 to NULL. If an adapter algorithm can do SMBus access, set
186 smbus_xfer. If set to NULL, the SMBus protocol is simulated
187 using common I2C messages */
8ced8eee
JD		 188 /* master_xfer should return the number of messages successfully
189 processed, or a negative value on error */
1da177e4
LT		 190 int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs,
191 int num);
192 int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr,
193 unsigned short flags, char read_write,
194 u8 command, int size, union i2c_smbus_data * data);
195
1da177e4
LT		 196 /* --- ioctl like call to set div. parameters. */
197 int (*algo_control)(struct i2c_adapter *, unsigned int, unsigned long);
198
199 /* To determine what the adapter supports */
200 u32 (*functionality) (struct i2c_adapter *);
201};
202
203/*
204 * i2c_adapter is the structure used to identify a physical i2c bus along
205 * with the access algorithms necessary to access it.
206 */
207struct i2c_adapter {
208 struct module *owner;
020789e9 209 unsigned int id;
1da177e4 210 unsigned int class;
af71ff69 211 const struct i2c_algorithm *algo; /* the algorithm to access the bus */
1da177e4
LT		 212 void *algo_data;
213
214 /* --- administration stuff. */
215 int (*client_register)(struct i2c_client *);
216 int (*client_unregister)(struct i2c_client *);
217
218 /* data fields that are valid for all devices */
6ea23039 219 u8 level; /* nesting level for lockdep */
5c085d36
IM		 220 struct mutex bus_lock;
221 struct mutex clist_lock;
1da177e4
LT		 222
223 int timeout;
224 int retries;
225 struct device dev; /* the adapter device */
226 struct class_device class_dev; /* the class device */
227
1da177e4
LT		 228 int nr;
229 struct list_head clients;
230 struct list_head list;
231 char name[I2C_NAME_SIZE];
232 struct completion dev_released;
233 struct completion class_dev_released;
234};
235#define dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
236#define class_dev_to_i2c_adapter(d) container_of(d, struct i2c_adapter, class_dev)
237
238static inline void *i2c_get_adapdata (struct i2c_adapter *dev)
239{
240 return dev_get_drvdata (&dev->dev);
241}
242
243static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
244{
245 dev_set_drvdata (&dev->dev, data);
246}
247
1da177e4 248/*flags for the client struct: */
1da177e4
LT		 249#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
250#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
251 /* Must equal I2C_M_TEN below */
252
253/* i2c adapter classes (bitmask) */
254#define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */
255#define I2C_CLASS_TV_ANALOG (1<<1) /* bttv + friends */
256#define I2C_CLASS_TV_DIGITAL (1<<2) /* dvb cards */
257#define I2C_CLASS_DDC (1<<3) /* i2c-matroxfb ? */
258#define I2C_CLASS_CAM_ANALOG (1<<4) /* camera with analog CCD */
259#define I2C_CLASS_CAM_DIGITAL (1<<5) /* most webcams */
260#define I2C_CLASS_SOUND (1<<6) /* sound devices */
261#define I2C_CLASS_ALL (UINT_MAX) /* all of the above */
262
263/* i2c_client_address_data is the struct for holding default client
264 * addresses for a driver and for the parameters supplied on the
265 * command line
266 */
267struct i2c_client_address_data {
268 unsigned short *normal_i2c;
1da177e4 269 unsigned short *probe;
1da177e4 270 unsigned short *ignore;
9fc6adfa 271 unsigned short **forces;
1da177e4
LT		 272};
273
274/* Internal numbers to terminate lists */
275#define I2C_CLIENT_END 0xfffeU
1da177e4
LT		 276
277/* The numbers to use to set I2C bus address */
278#define ANY_I2C_BUS 0xffff
279#define ANY_I2C_ISA_BUS 9191
280
281
282/* ----- functions exported by i2c.o */
283
284/* administration...
285 */
286extern int i2c_add_adapter(struct i2c_adapter *);
287extern int i2c_del_adapter(struct i2c_adapter *);
288
de59cf9e 289extern int i2c_register_driver(struct module *, struct i2c_driver *);
1da177e4
LT		 290extern int i2c_del_driver(struct i2c_driver *);
291
de59cf9e
GKH		 292static inline int i2c_add_driver(struct i2c_driver *driver)
293{
294 return i2c_register_driver(THIS_MODULE, driver);
295}
296
1da177e4
LT		 297extern int i2c_attach_client(struct i2c_client *);
298extern int i2c_detach_client(struct i2c_client *);
299
482c788d
JD		 300/* Should be used to make sure that client-struct is valid and that it
301 is okay to access the i2c-client.
cf02df77 302 returns -ENODEV if client has gone in the meantime */
1da177e4
LT		 303extern int i2c_use_client(struct i2c_client *);
304extern int i2c_release_client(struct i2c_client *);
305
306/* call the i2c_client->command() of all attached clients with
307 * the given arguments */
308extern void i2c_clients_command(struct i2c_adapter *adap,
309 unsigned int cmd, void *arg);
310
311/* returns -EBUSY if address has been taken, 0 if not. Note that the only
312 other place at which this is called is within i2c_attach_client; so
313 you can cheat by simply not registering. Not recommended, of course! */
314extern int i2c_check_addr (struct i2c_adapter *adapter, int addr);
315
316/* Detect function. It iterates over all possible addresses itself.
317 * It will only call found_proc if some client is connected at the
318 * specific address (unless a 'force' matched);
319 */
320extern int i2c_probe(struct i2c_adapter *adapter,
321 struct i2c_client_address_data *address_data,
322 int (*found_proc) (struct i2c_adapter *, int, int));
323
324/* An ioctl like call to set div. parameters of the adapter.
325 */
326extern int i2c_control(struct i2c_client *,unsigned int, unsigned long);
327
1da177e4
LT		 328extern struct i2c_adapter* i2c_get_adapter(int id);
329extern void i2c_put_adapter(struct i2c_adapter *adap);
330
331
332/* Return the functionality mask */
333static inline u32 i2c_get_functionality(struct i2c_adapter *adap)
334{
335 return adap->algo->functionality(adap);
336}
337
338/* Return 1 if adapter supports everything we need, 0 if not. */
339static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
340{
341 return (func & i2c_get_functionality(adap)) == func;
342}
343
cdcb1921
JD		 344/* Return id number for a specific adapter */
345static inline int i2c_adapter_id(struct i2c_adapter *adap)
346{
347 return adap->nr;
348}
a1b9298e 349#endif /* __KERNEL__ */
cdcb1921 350
1da177e4
LT		 351/*
352 * I2C Message - used for pure i2c transaction, also from /dev interface
353 */
354struct i2c_msg {
355 __u16 addr; /* slave address */
356 __u16 flags;
357#define I2C_M_TEN 0x10 /* we have a ten bit chip address */
358#define I2C_M_RD 0x01
359#define I2C_M_NOSTART 0x4000
360#define I2C_M_REV_DIR_ADDR 0x2000
361#define I2C_M_IGNORE_NAK 0x1000
362#define I2C_M_NO_RD_ACK 0x0800
363 __u16 len; /* msg length */
364 __u8 *buf; /* pointer to msg data */
365};
366
367/* To determine what functionality is present */
368
369#define I2C_FUNC_I2C 0x00000001
370#define I2C_FUNC_10BIT_ADDR 0x00000002
371#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
372#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */
1da177e4
LT		 373#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
374#define I2C_FUNC_SMBUS_QUICK 0x00010000
375#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
376#define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000
377#define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000
378#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000
379#define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000
380#define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000
381#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000
382#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000
383#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
384#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
385#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
386#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */
387#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
1da177e4
LT		 388
389#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
390 I2C_FUNC_SMBUS_WRITE_BYTE)
391#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
392 I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
393#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
394 I2C_FUNC_SMBUS_WRITE_WORD_DATA)
395#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
396 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
397#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
398 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
399#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
400 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
1da177e4
LT		 401
402#define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
403 I2C_FUNC_SMBUS_BYTE | \
404 I2C_FUNC_SMBUS_BYTE_DATA | \
405 I2C_FUNC_SMBUS_WORD_DATA | \
406 I2C_FUNC_SMBUS_PROC_CALL | \
407 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
1da177e4
LT		 408 I2C_FUNC_SMBUS_I2C_BLOCK)
409
410/*
411 * Data for SMBus Messages
412 */
413#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */
1da177e4
LT		 414union i2c_smbus_data {
415 __u8 byte;
416 __u16 word;
332bf92b 417 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */
421ef47b 418 /* and one more for user-space compatibility */
1da177e4
LT		 419};
420
421/* smbus_access read or write markers */
422#define I2C_SMBUS_READ 1
423#define I2C_SMBUS_WRITE 0
424
425/* SMBus transaction types (size parameter in the above functions)
426 Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */
427#define I2C_SMBUS_QUICK 0
428#define I2C_SMBUS_BYTE 1
429#define I2C_SMBUS_BYTE_DATA 2
430#define I2C_SMBUS_WORD_DATA 3
431#define I2C_SMBUS_PROC_CALL 4
432#define I2C_SMBUS_BLOCK_DATA 5
433#define I2C_SMBUS_I2C_BLOCK_DATA 6
434#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */
1da177e4
LT		 435
436
437/* ----- commands for the ioctl like i2c_command call:
438 * note that additional calls are defined in the algorithm and hw
439 * dependent layers - these can be listed here, or see the
440 * corresponding header files.
441 */
442 /* -> bit-adapter specific ioctls */
443#define I2C_RETRIES 0x0701 /* number of times a device address */
444 /* should be polled when not */
445 /* acknowledging */
446#define I2C_TIMEOUT 0x0702 /* set timeout - call with int */
447
448
449/* this is for i2c-dev.c */
450#define I2C_SLAVE 0x0703 /* Change slave address */
451 /* Attn.: Slave address is 7 or 10 bits */
452#define I2C_SLAVE_FORCE 0x0706 /* Change slave address */
453 /* Attn.: Slave address is 7 or 10 bits */
454 /* This changes the address, even if it */
455 /* is already taken! */
456#define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
457
458#define I2C_FUNCS 0x0705 /* Get the adapter functionality */
459#define I2C_RDWR 0x0707 /* Combined R/W transfer (one stop only)*/
460#define I2C_PEC 0x0708 /* != 0 for SMBus PEC */
1da177e4
LT		 461
462#define I2C_SMBUS 0x0720 /* SMBus-level access */
463
1da177e4 464/* ----- I2C-DEV: char device interface stuff ------------------------- */
a1b9298e 465#ifdef __KERNEL__
1da177e4
LT		 466
467#define I2C_MAJOR 89 /* Device major number */
468
469/* These defines are used for probing i2c client addresses */
470/* The length of the option lists */
471#define I2C_CLIENT_MAX_OPTS 48
472
473/* Default fill of many variables */
474#define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
475 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
476 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
477 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
478 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
479 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
480 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
481 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
482 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
483 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
484 I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
485 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
491/* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the
492 module header */
493
494#define I2C_CLIENT_MODULE_PARM(var,desc) \
495 static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \
496 static unsigned int var##_num; \
497 module_param_array(var, short, &var##_num, 0); \
498 MODULE_PARM_DESC(var,desc)
499
f4b50261
JD		 500#define I2C_CLIENT_MODULE_PARM_FORCE(name) \
501I2C_CLIENT_MODULE_PARM(force_##name, \
502 "List of adapter,address pairs which are " \
503 "unquestionably assumed to contain a `" \
504 # name "' chip")
505
506
507#define I2C_CLIENT_INSMOD_COMMON \
508I2C_CLIENT_MODULE_PARM(probe, "List of adapter,address pairs to scan " \
509 "additionally"); \
510I2C_CLIENT_MODULE_PARM(ignore, "List of adapter,address pairs not to " \
511 "scan"); \
512static struct i2c_client_address_data addr_data = { \
513 .normal_i2c = normal_i2c, \
514 .probe = probe, \
515 .ignore = ignore, \
516 .forces = forces, \
517}
518
519/* These are the ones you want to use in your own drivers. Pick the one
520 which matches the number of devices the driver differenciates between. */
1da177e4 521#define I2C_CLIENT_INSMOD \
1da177e4
LT		 522 I2C_CLIENT_MODULE_PARM(force, \
523 "List of adapter,address pairs to boldly assume " \
524 "to be present"); \
f4b50261 525 static unsigned short *forces[] = { \
9fc6adfa
JD		 526 force, \
527 NULL \
528 }; \
f4b50261
JD		 529I2C_CLIENT_INSMOD_COMMON
530
531#define I2C_CLIENT_INSMOD_1(chip1) \
532enum chips { any_chip, chip1 }; \
533I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
534 "boldly assume to be present"); \
535I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
536static unsigned short *forces[] = { force, force_##chip1, NULL }; \
537I2C_CLIENT_INSMOD_COMMON
538
539#define I2C_CLIENT_INSMOD_2(chip1, chip2) \
540enum chips { any_chip, chip1, chip2 }; \
541I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
542 "boldly assume to be present"); \
543I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
544I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
545static unsigned short *forces[] = { force, force_##chip1, \
546 force_##chip2, NULL }; \
547I2C_CLIENT_INSMOD_COMMON
548
549#define I2C_CLIENT_INSMOD_3(chip1, chip2, chip3) \
550enum chips { any_chip, chip1, chip2, chip3 }; \
551I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
552 "boldly assume to be present"); \
553I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
554I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
555I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
556static unsigned short *forces[] = { force, force_##chip1, \
557 force_##chip2, force_##chip3, \
558 NULL }; \
559I2C_CLIENT_INSMOD_COMMON
560
561#define I2C_CLIENT_INSMOD_4(chip1, chip2, chip3, chip4) \
562enum chips { any_chip, chip1, chip2, chip3, chip4 }; \
563I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
564 "boldly assume to be present"); \
565I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
566I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
567I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
568I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
569static unsigned short *forces[] = { force, force_##chip1, \
570 force_##chip2, force_##chip3, \
571 force_##chip4, NULL}; \
572I2C_CLIENT_INSMOD_COMMON
573
574#define I2C_CLIENT_INSMOD_5(chip1, chip2, chip3, chip4, chip5) \
575enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \
576I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
577 "boldly assume to be present"); \
578I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
579I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
580I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
581I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
582I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
583static unsigned short *forces[] = { force, force_##chip1, \
584 force_##chip2, force_##chip3, \
585 force_##chip4, force_##chip5, \
586 NULL }; \
587I2C_CLIENT_INSMOD_COMMON
588
589#define I2C_CLIENT_INSMOD_6(chip1, chip2, chip3, chip4, chip5, chip6) \
590enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \
591I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
592 "boldly assume to be present"); \
593I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
594I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
595I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
596I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
597I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
598I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
599static unsigned short *forces[] = { force, force_##chip1, \
600 force_##chip2, force_##chip3, \
601 force_##chip4, force_##chip5, \
602 force_##chip6, NULL }; \
603I2C_CLIENT_INSMOD_COMMON
604
605#define I2C_CLIENT_INSMOD_7(chip1, chip2, chip3, chip4, chip5, chip6, chip7) \
606enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
607 chip7 }; \
608I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
609 "boldly assume to be present"); \
610I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
611I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
612I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
613I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
614I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
615I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
616I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
617static unsigned short *forces[] = { force, force_##chip1, \
618 force_##chip2, force_##chip3, \
619 force_##chip4, force_##chip5, \
620 force_##chip6, force_##chip7, \
621 NULL }; \
622I2C_CLIENT_INSMOD_COMMON
623
624#define I2C_CLIENT_INSMOD_8(chip1, chip2, chip3, chip4, chip5, chip6, chip7, chip8) \
625enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, \
626 chip7, chip8 }; \
627I2C_CLIENT_MODULE_PARM(force, "List of adapter,address pairs to " \
628 "boldly assume to be present"); \
629I2C_CLIENT_MODULE_PARM_FORCE(chip1); \
630I2C_CLIENT_MODULE_PARM_FORCE(chip2); \
631I2C_CLIENT_MODULE_PARM_FORCE(chip3); \
632I2C_CLIENT_MODULE_PARM_FORCE(chip4); \
633I2C_CLIENT_MODULE_PARM_FORCE(chip5); \
634I2C_CLIENT_MODULE_PARM_FORCE(chip6); \
635I2C_CLIENT_MODULE_PARM_FORCE(chip7); \
636I2C_CLIENT_MODULE_PARM_FORCE(chip8); \
637static unsigned short *forces[] = { force, force_##chip1, \
638 force_##chip2, force_##chip3, \
639 force_##chip4, force_##chip5, \
640 force_##chip6, force_##chip7, \
641 force_##chip8, NULL }; \
642I2C_CLIENT_INSMOD_COMMON
a1b9298e 643#endif /* __KERNEL__ */
1da177e4 644#endif /* _LINUX_I2C_H */
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