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-rw-r--r--include/linux/i2c.h41
1 files changed, 12 insertions, 29 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 5e19a7ba69b2..7863a59bd598 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -105,14 +105,14 @@ extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
105 * A driver is capable of handling one or more physical devices present on 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 106 * I2C adapters. This information is used to inform the driver of adapter
107 * events. 107 * events.
108 *
109 * The driver.owner field should be set to the module owner of this driver.
110 * The driver.name field should be set to the name of this driver.
108 */ 111 */
109 112
110struct i2c_driver { 113struct i2c_driver {
111 struct module *owner;
112 char name[32];
113 int id; 114 int id;
114 unsigned int class; 115 unsigned int class;
115 unsigned int flags; /* div., see below */
116 116
117 /* Notifies the driver that a new bus has appeared. This routine 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 118 * can be used by the driver to test if the bus meets its conditions
@@ -250,18 +250,7 @@ static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
250 dev_set_drvdata (&dev->dev, data); 250 dev_set_drvdata (&dev->dev, data);
251} 251}
252 252
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: */ 253/*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 */ 254#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
266#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ 255#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
267 /* Must equal I2C_M_TEN below */ 256 /* Must equal I2C_M_TEN below */
@@ -302,26 +291,20 @@ struct i2c_client_address_data {
302extern int i2c_add_adapter(struct i2c_adapter *); 291extern int i2c_add_adapter(struct i2c_adapter *);
303extern int i2c_del_adapter(struct i2c_adapter *); 292extern int i2c_del_adapter(struct i2c_adapter *);
304 293
305extern int i2c_add_driver(struct i2c_driver *); 294extern int i2c_register_driver(struct module *, struct i2c_driver *);
306extern int i2c_del_driver(struct i2c_driver *); 295extern int i2c_del_driver(struct i2c_driver *);
307 296
297static inline int i2c_add_driver(struct i2c_driver *driver)
298{
299 return i2c_register_driver(THIS_MODULE, driver);
300}
301
308extern int i2c_attach_client(struct i2c_client *); 302extern int i2c_attach_client(struct i2c_client *);
309extern int i2c_detach_client(struct i2c_client *); 303extern int i2c_detach_client(struct i2c_client *);
310 304
311/* New function: This is to get an i2c_client-struct for controlling the 305/* Should be used to make sure that client-struct is valid and that it
312 client either by using i2c_control-function or having the 306 is okay to access the i2c-client.
313 client-module export functions that can be used with the i2c_client 307 returns -ENODEV if client has gone in the meantime */
314 -struct. */
315extern 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 */
325extern int i2c_use_client(struct i2c_client *); 308extern int i2c_use_client(struct i2c_client *);
326extern int i2c_release_client(struct i2c_client *); 309extern int i2c_release_client(struct i2c_client *);
327 310