diff options
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 02fc617782e..21067b41853 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -34,6 +34,7 @@ #include <linux/device.h> /* for struct device */ #include <linux/sched.h> /* for completion */ #include <linux/mutex.h> +#include <linux/of.h> /* for struct device_node */ extern struct bus_type i2c_bus_type; @@ -53,6 +54,7 @@ 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 +154,13 @@ 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. */ @@ -243,6 +252,9 @@ struct i2c_board_info { unsigned short addr; void *platform_data; struct dev_archdata *archdata; +#ifdef CONFIG_OF + struct device_node *of_node; +#endif int irq; }; @@ -347,6 +359,8 @@ struct i2c_adapter { int nr; char name[48]; struct completion dev_released; + + struct list_head userspace_clients; }; #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) |