diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 07:34:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 07:34:47 -0800 |
| commit | a03696e912cd544e1504a79e49600cdb535f42db (patch) | |
| tree | 7a9357153c3479f103cf74ea90ce4a5c983b0f2d /include/linux/i2c.h | |
| parent | 0a135ba14d71fb84c691a5386aff5049691fe6d7 (diff) | |
| parent | 0c43ea544c1086fbbed5a6c99ea58eb64674ea8f (diff) | |
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: Document the message size limit
i2c-algo-pca: Drop duplicate variable
i2c: Hook up runtime PM support
i2c-parport-light: Add SMBus alert support
i2c-parport: Add SMBus alert support
i2c: Separate Kconfig option for i2c-smbus
i2c: Add SMBus alert support
i2c-parport: Give powered devices some time to settle
i2c-tiny-usb: Fix a comment on bus frequency
i2c-i801: Add Intel Cougar Point device IDs
i2c: Make PCI device ids constant
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 02fc617782e..0a5da639b32 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -53,6 +53,7 @@ struct i2c_board_info; * on a bus (or read from them). Apart from two basic transfer functions to * transmit one message at a time, a more complex version can be used to * transmit an arbitrary number of messages without interruption. + * @count must be be less than 64k since msg.len is u16. */ extern int i2c_master_send(struct i2c_client *client, const char *buf, int count); @@ -152,6 +153,13 @@ struct i2c_driver { int (*suspend)(struct i2c_client *, pm_message_t mesg); int (*resume)(struct i2c_client *); + /* Alert callback, for example for the SMBus alert protocol. + * The format and meaning of the data value depends on the protocol. + * For the SMBus alert protocol, there is a single bit of data passed + * as the alert response's low bit ("event flag"). + */ + void (*alert)(struct i2c_client *, unsigned int data); + /* a ioctl like command that can be used to perform specific functions * with the device. */ |