#include <linux/module.h>
#include <linux/types.h>
#include <linux/i2c-id.h>
+#include <linux/mod_devicetable.h>
#include <linux/device.h> /* for struct device */
+#include <linux/sched.h> /* for completion */
#include <asm/semaphore.h>
/* --- For i2c-isa ---------------------------------------------------- */
* A driver is capable of handling one or more physical devices present on
* I2C adapters. This information is used to inform the driver of adapter
* events.
+ *
+ * The driver.owner field should be set to the module owner of this driver.
+ * The driver.name field should be set to the name of this driver.
*/
struct i2c_driver {
- struct module *owner;
- char name[32];
int id;
unsigned int class;
- unsigned int flags; /* div., see below */
/* Notifies the driver that a new bus has appeared. This routine
* can be used by the driver to test if the bus meets its conditions
dev_set_drvdata (&dev->dev, data);
}
-/*flags for the driver struct: */
-#define I2C_DF_NOTIFY 0x01 /* notify on bus (de/a)ttaches */
-#if 0
-/* this flag is gone -- there is a (optional) driver->detach_adapter
- * callback now which can be used instead */
-# define I2C_DF_DUMMY 0x02
-#endif
-
/*flags for the client struct: */
-#define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */
-#define I2C_CLIENT_ALLOW_MULTIPLE_USE 0x02 /* Allow multiple access-locks */
- /* on an i2c_client */
#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */
#define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */
/* Must equal I2C_M_TEN below */
extern int i2c_add_adapter(struct i2c_adapter *);
extern int i2c_del_adapter(struct i2c_adapter *);
-extern int i2c_add_driver(struct i2c_driver *);
+extern int i2c_register_driver(struct module *, struct i2c_driver *);
extern int i2c_del_driver(struct i2c_driver *);
+static inline int i2c_add_driver(struct i2c_driver *driver)
+{
+ return i2c_register_driver(THIS_MODULE, driver);
+}
+
extern int i2c_attach_client(struct i2c_client *);
extern int i2c_detach_client(struct i2c_client *);
-/* New function: This is to get an i2c_client-struct for controlling the
- client either by using i2c_control-function or having the
- client-module export functions that can be used with the i2c_client
- -struct. */
-extern struct i2c_client *i2c_get_client(int driver_id, int adapter_id,
- struct i2c_client *prev);
-
-/* Should be used with new function
- extern struct i2c_client *i2c_get_client(int,int,struct i2c_client *);
- to make sure that client-struct is valid and that it is okay to access
- the i2c-client.
- returns -EACCES if client doesn't allow use (default)
- returns -EBUSY if client doesn't allow multiple use (default) and
- usage_count >0 */
+/* Should be used to make sure that client-struct is valid and that it
+ is okay to access the i2c-client.
+ returns -ENODEV if client has gone in the meantime */
extern int i2c_use_client(struct i2c_client *);
extern int i2c_release_client(struct i2c_client *);
#define I2C_FUNC_10BIT_ADDR 0x00000002
#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_READ_WORD_DATA_PEC 0x00000800 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC 0x00001000 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_PROC_CALL_PEC 0x00002000 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL_PEC 0x00004000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_QUICK 0x00010000
#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000
#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */
#define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 /* I2C-like block xfer */
#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 /* w/ 2-byte reg. addr. */
-#define I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC 0x40000000 /* SMBus 2.0 */
-#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC 0x80000000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
I2C_FUNC_SMBUS_WRITE_BYTE)
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
#define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | \
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2)
-#define I2C_FUNC_SMBUS_BLOCK_DATA_PEC (I2C_FUNC_SMBUS_READ_BLOCK_DATA_PEC | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC)
-#define I2C_FUNC_SMBUS_WORD_DATA_PEC (I2C_FUNC_SMBUS_READ_WORD_DATA_PEC | \
- I2C_FUNC_SMBUS_WRITE_WORD_DATA_PEC)
-
-#define I2C_FUNC_SMBUS_READ_BYTE_PEC I2C_FUNC_SMBUS_READ_BYTE_DATA
-#define I2C_FUNC_SMBUS_WRITE_BYTE_PEC I2C_FUNC_SMBUS_WRITE_BYTE_DATA
-#define I2C_FUNC_SMBUS_READ_BYTE_DATA_PEC I2C_FUNC_SMBUS_READ_WORD_DATA
-#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA_PEC I2C_FUNC_SMBUS_WRITE_WORD_DATA
-#define I2C_FUNC_SMBUS_BYTE_PEC I2C_FUNC_SMBUS_BYTE_DATA
-#define I2C_FUNC_SMBUS_BYTE_DATA_PEC I2C_FUNC_SMBUS_WORD_DATA
#define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
I2C_FUNC_SMBUS_BYTE | \
I2C_FUNC_SMBUS_WORD_DATA | \
I2C_FUNC_SMBUS_PROC_CALL | \
I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA_PEC | \
I2C_FUNC_SMBUS_I2C_BLOCK)
/*
* Data for SMBus Messages
*/
#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */
-#define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */
union i2c_smbus_data {
__u8 byte;
__u16 word;
__u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */
- /* and one more for PEC */
+ /* and one more for user-space compatibility */
};
/* smbus_access read or write markers */
#define I2C_SMBUS_BLOCK_DATA 5
#define I2C_SMBUS_I2C_BLOCK_DATA 6
#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */
-#define I2C_SMBUS_BLOCK_DATA_PEC 8 /* SMBus 2.0 */
-#define I2C_SMBUS_PROC_CALL_PEC 9 /* SMBus 2.0 */
-#define I2C_SMBUS_BLOCK_PROC_CALL_PEC 10 /* SMBus 2.0 */
-#define I2C_SMBUS_WORD_DATA_PEC 11 /* SMBus 2.0 */
/* ----- commands for the ioctl like i2c_command call: