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I2C Tools for Linux 3.0.2 (Default branch)
12-01-2008
This package contains a heterogeneous set of I2Ctools for Linux: a bus probing tool, a chipdumper, register-level access helpers, EEPROMdecoding scripts, and more.License: GNU General Public License (GPL)Changes:|
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I2C_ADD_NUMBERED_ADA(9) I2C and SMBus Subsystem I2C_ADD_NUMBERED_ADA(9) NAME
i2c_add_numbered_adapter - declare i2c adapter, use static bus number SYNOPSIS
int i2c_add_numbered_adapter(struct i2c_adapter * adap); ARGUMENTS
adap the adapter to register (with adap->nr initialized) CONTEXT
can sleep DESCRIPTION
This routine is used to declare an I2C adapter when its bus number matters. For example, use it for I2C adapters from system-on-chip CPUs, or otherwise built in to the system's mainboard, and where i2c_board_info is used to properly configure I2C devices. If the requested bus number is set to -1, then this function will behave identically to i2c_add_adapter, and will dynamically assign a bus number. If no devices have pre-been declared for this bus, then be sure to register the adapter before any dynamically allocated ones. Otherwise the required bus ID may not be available. When this returns zero, the specified adapter became available for clients using the bus number provided in adap->nr. Also, the table of I2C devices pre-declared using i2c_register_board_info is scanned, and the appropriate driver model device nodes are created. Otherwise, a negative errno value is returned. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 I2C_ADD_NUMBERED_ADA(9)