I2C_SMBUS_WRITE_BLOC(9) I2C and SMBus Subsystem I2C_SMBUS_WRITE_BLOC(9)NAME
i2c_smbus_write_block_data - SMBus "block write" protocol
s32 i2c_smbus_write_block_data(const struct i2c_client * client, u8 command, u8 length, const u8 * values);
Handle to slave device
Byte interpreted by slave
Size of data block; SMBus allows at most 32 bytes
Byte array which will be written.
This executes the SMBus "block write" protocol, returning negative errno else zero on success.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 I2C_SMBUS_WRITE_BLOC(9)
Check Out this Related Man Page
ACPISMBUS(4) BSD Kernel Interfaces Manual ACPISMBUS(4)NAME
acpismbus -- ACPI SMBus Control Method Interface
acpismbus* at acpi?
iic* at acpismbus?
The acpismbus driver supports instances of the ACPI SMBus Control Method Interface. This enables i2c access to bus segments which might not
otherwise be accessible due to missing "native" driver support. The SMBus Process Call protocol is not supported. All other SMBus protocols
are supported to the extent that the underlying controller supports them.
SEE ALSO acpi(4), iic(4)HISTORY
The acpismbus driver appeared in NetBSD 6.0.
Although acpismbus SMBus Alerts can be associated with individual devices, this capability is ignored. When an acpismbus SMBus Alert is gen-
erated, all devices on the i2c bus segment which have registered an interrupt routine are notified.
The SMBus CMI protocol defines a method to provide a list of devices on an i2c bus segment and their addresses. The acpismbus driver makes
no attempt to retrieve or process this device list.
There is currently no way to determine if the i2c controller managed by an instance of the ACPI SMBus CMI can also be accessed using a native
device driver. Therefore, the acpismbus driver should not be enabled by default. If both a native driver and the acpismbus driver attempt
to access the same i2c bus segment, the results are undefined.
BSD February 6, 2010 BSD
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