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-rw-r--r--include/linux/i2c.h163
1 files changed, 81 insertions, 82 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 06115128047..33a5992d493 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -53,45 +53,44 @@ struct i2c_board_info;
* transmit one message at a time, a more complex version can be used to
* transmit an arbitrary number of messages without interruption.
*/
-extern int i2c_master_send(struct i2c_client *,const char* ,int);
-extern int i2c_master_recv(struct i2c_client *,char* ,int);
+extern int i2c_master_send(struct i2c_client *client, const char *buf,
+ int count);
+extern int i2c_master_recv(struct i2c_client *client, char *buf, int count);
/* Transfer num messages.
*/
-extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num);
-
+extern int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+ int num);
/* This is the very generalized SMBus access routine. You probably do not
want to use this, though; one of the functions below may be much easier,
and probably just as fast.
Note that we use i2c_adapter here, because you do not need a specific
smbus adapter to call this function. */
-extern s32 i2c_smbus_xfer (struct i2c_adapter * adapter, u16 addr,
- unsigned short flags,
- char read_write, u8 command, int size,
- union i2c_smbus_data * data);
+extern s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
+ unsigned short flags, char read_write, u8 command,
+ int size, union i2c_smbus_data *data);
/* Now follow the 'nice' access routines. These also document the calling
conventions of i2c_smbus_xfer. */
-extern s32 i2c_smbus_read_byte(struct i2c_client * client);
-extern s32 i2c_smbus_write_byte(struct i2c_client * client, u8 value);
-extern s32 i2c_smbus_read_byte_data(struct i2c_client * client, u8 command);
-extern s32 i2c_smbus_write_byte_data(struct i2c_client * client,
- u8 command, u8 value);
-extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command);
-extern s32 i2c_smbus_write_word_data(struct i2c_client * client,
- u8 command, u16 value);
+extern s32 i2c_smbus_read_byte(struct i2c_client *client);
+extern s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value);
+extern s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command);
+extern s32 i2c_smbus_write_byte_data(struct i2c_client *client,
+ u8 command, u8 value);
+extern s32 i2c_smbus_read_word_data(struct i2c_client *client, u8 command);
+extern s32 i2c_smbus_write_word_data(struct i2c_client *client,
+ u8 command, u16 value);
/* Returns the number of read bytes */
extern s32 i2c_smbus_read_block_data(struct i2c_client *client,
u8 command, u8 *values);
-extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
- u8 command, u8 length,
- const u8 *values);
+extern s32 i2c_smbus_write_block_data(struct i2c_client *client,
+ u8 command, u8 length, const u8 *values);
/* Returns the number of read bytes */
-extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client,
u8 command, u8 length, u8 *values);
-extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,
+extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client,
u8 command, u8 length,
const u8 *values);
@@ -169,7 +168,7 @@ struct i2c_driver {
/* a ioctl like command that can be used to perform specific functions
* with the device.
*/
- int (*command)(struct i2c_client *client,unsigned int cmd, void *arg);
+ int (*command)(struct i2c_client *client, unsigned int cmd, void *arg);
struct device_driver driver;
const struct i2c_device_id *id_table;
@@ -224,14 +223,14 @@ static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj)
return to_i2c_client(dev);
}
-static inline void *i2c_get_clientdata (struct i2c_client *dev)
+static inline void *i2c_get_clientdata(const struct i2c_client *dev)
{
- return dev_get_drvdata (&dev->dev);
+ return dev_get_drvdata(&dev->dev);
}
-static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
+static inline void i2c_set_clientdata(struct i2c_client *dev, void *data)
{
- dev_set_drvdata (&dev->dev, data);
+ dev_set_drvdata(&dev->dev, data);
}
/**
@@ -240,6 +239,7 @@ static inline void i2c_set_clientdata (struct i2c_client *dev, void *data)
* @flags: to initialize i2c_client.flags
* @addr: stored in i2c_client.addr
* @platform_data: stored in i2c_client.dev.platform_data
+ * @archdata: copied into i2c_client.dev.archdata
* @irq: stored in i2c_client.irq
*
* I2C doesn't actually support hardware probing, although controllers and
@@ -259,6 +259,7 @@ struct i2c_board_info {
unsigned short flags;
unsigned short addr;
void *platform_data;
+ struct dev_archdata *archdata;
int irq;
};
@@ -272,7 +273,7 @@ struct i2c_board_info {
* fields (such as associated irq, or device-specific platform_data)
* are provided using conventional syntax.
*/
-#define I2C_BOARD_INFO(dev_type,dev_addr) \
+#define I2C_BOARD_INFO(dev_type, dev_addr) \
.type = (dev_type), .addr = (dev_addr)
@@ -306,10 +307,12 @@ extern void i2c_unregister_device(struct i2c_client *);
*/
#ifdef CONFIG_I2C_BOARDINFO
extern int
-i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n);
+i2c_register_board_info(int busnum, struct i2c_board_info const *info,
+ unsigned n);
#else
static inline int
-i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned n)
+i2c_register_board_info(int busnum, struct i2c_board_info const *info,
+ unsigned n)
{
return 0;
}
@@ -328,11 +331,11 @@ struct i2c_algorithm {
using common I2C messages */
/* master_xfer should return the number of messages successfully
processed, or a negative value on error */
- int (*master_xfer)(struct i2c_adapter *adap,struct i2c_msg *msgs,
- int num);
+ int (*master_xfer)(struct i2c_adapter *adap, struct i2c_msg *msgs,
+ int num);
int (*smbus_xfer) (struct i2c_adapter *adap, u16 addr,
- unsigned short flags, char read_write,
- u8 command, int size, union i2c_smbus_data * data);
+ unsigned short flags, char read_write,
+ u8 command, int size, union i2c_smbus_data *data);
/* To determine what the adapter supports */
u32 (*functionality) (struct i2c_adapter *);
@@ -345,7 +348,7 @@ struct i2c_algorithm {
struct i2c_adapter {
struct module *owner;
unsigned int id;
- unsigned int class;
+ unsigned int class; /* classes to allow probing for */
const struct i2c_algorithm *algo; /* the algorithm to access the bus */
void *algo_data;
@@ -369,14 +372,14 @@ struct i2c_adapter {
};
#define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev)
-static inline void *i2c_get_adapdata (struct i2c_adapter *dev)
+static inline void *i2c_get_adapdata(const struct i2c_adapter *dev)
{
- return dev_get_drvdata (&dev->dev);
+ return dev_get_drvdata(&dev->dev);
}
-static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data)
+static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data)
{
- dev_set_drvdata (&dev->dev, data);
+ dev_set_drvdata(&dev->dev, data);
}
/*flags for the client struct: */
@@ -449,7 +452,7 @@ extern int i2c_probe(struct i2c_adapter *adapter,
const struct i2c_client_address_data *address_data,
int (*found_proc) (struct i2c_adapter *, int, int));
-extern struct i2c_adapter* i2c_get_adapter(int id);
+extern struct i2c_adapter *i2c_get_adapter(int id);
extern void i2c_put_adapter(struct i2c_adapter *adap);
@@ -465,7 +468,7 @@ static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
return (func & i2c_get_functionality(adap)) == func;
}
-/* Return id number for a specific adapter */
+/* Return the adapter number for a specific adapter */
static inline int i2c_adapter_id(struct i2c_adapter *adap)
{
return adap->nr;
@@ -526,7 +529,7 @@ struct i2c_msg {
#define I2C_FUNC_I2C 0x00000001
#define I2C_FUNC_10BIT_ADDR 0x00000002
-#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */
+#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_NOSTART etc. */
#define I2C_FUNC_SMBUS_PEC 0x00000008
#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */
#define I2C_FUNC_SMBUS_QUICK 0x00010000
@@ -541,30 +544,26 @@ struct i2c_msg {
#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000
#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */
#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_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
- I2C_FUNC_SMBUS_WRITE_BYTE)
-#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
- I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
-#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
- I2C_FUNC_SMBUS_WRITE_WORD_DATA)
-#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
-#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
- 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_EMUL (I2C_FUNC_SMBUS_QUICK | \
- I2C_FUNC_SMBUS_BYTE | \
- I2C_FUNC_SMBUS_BYTE_DATA | \
- I2C_FUNC_SMBUS_WORD_DATA | \
- I2C_FUNC_SMBUS_PROC_CALL | \
- I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
- I2C_FUNC_SMBUS_I2C_BLOCK | \
- I2C_FUNC_SMBUS_PEC)
+
+#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \
+ I2C_FUNC_SMBUS_WRITE_BYTE)
+#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \
+ I2C_FUNC_SMBUS_WRITE_BYTE_DATA)
+#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \
+ I2C_FUNC_SMBUS_WRITE_WORD_DATA)
+#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA)
+#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \
+ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)
+
+#define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \
+ I2C_FUNC_SMBUS_BYTE | \
+ I2C_FUNC_SMBUS_BYTE_DATA | \
+ I2C_FUNC_SMBUS_WORD_DATA | \
+ I2C_FUNC_SMBUS_PROC_CALL | \
+ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \
+ I2C_FUNC_SMBUS_I2C_BLOCK | \
+ I2C_FUNC_SMBUS_PEC)
/*
* Data for SMBus Messages
@@ -574,7 +573,7 @@ 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 user-space compatibility */
+ /* and one more for user-space compatibility */
};
/* i2c_smbus_xfer read or write markers */
@@ -602,21 +601,21 @@ union i2c_smbus_data {
/* Default fill of many variables */
#define I2C_CLIENT_DEFAULTS {I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
- I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END}
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END, \
+ I2C_CLIENT_END, I2C_CLIENT_END, I2C_CLIENT_END}
/* I2C_CLIENT_MODULE_PARM creates a module parameter, and puts it in the
module header */
@@ -625,7 +624,7 @@ union i2c_smbus_data {
static unsigned short var[I2C_CLIENT_MAX_OPTS] = I2C_CLIENT_DEFAULTS; \
static unsigned int var##_num; \
module_param_array(var, short, &var##_num, 0); \
- MODULE_PARM_DESC(var,desc)
+ MODULE_PARM_DESC(var, desc)
#define I2C_CLIENT_MODULE_PARM_FORCE(name) \
I2C_CLIENT_MODULE_PARM(force_##name, \
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 11:43:22 +0000