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dev-interface

Timestamp:

10/14/07 13:48:53 (1 year ago)

Author:

khali

Message:

dev-interface clarifications. This is a backport from Linux 2.6, original
patch by David Brownell.

Files:

r3988	r4951
91	91	ioctl(file,I2C_TENBIT,long select)
92	92	Selects ten bit addresses if select not equals 0, selects normal 7 bit
93		addresses if select equals 0. Default 0.
	93	addresses if select equals 0. Default 0. This request is only valid
	94	if the adapter has I2C_FUNC_10BIT_ADDR.
94	95
95	96	ioctl(file,I2C_PEC,long select)
96	97	Selects SMBus PEC (packet error checking) generation and verification
97	98	if select not equals 0, disables if select equals 0. Default 0.
98		Used only for SMBus transactions.
	99	Used only for SMBus transactions. This request only has an effect if the
	100	the adapter has I2C_FUNC_SMBUS_PEC; it is still safe if not, it just
	101	doesn't have any effect.
99	102
100	103	ioctl(file,I2C_FUNCS,unsigned long *funcs)
…	…
104	107
105	108	Do combined read/write transaction without stop in between.
106		The argument is a pointer to a struct i2c_rdwr_ioctl_data {
	109	Only valid if the adapter has I2C_FUNC_I2C. The argument is
	110	a pointer to a
107	111
	112	struct i2c_rdwr_ioctl_data {
108	113	struct i2c_msg msgs; / ptr to array of simple messages */
109	114	int nmsgs; /* number of messages to exchange */