'\" t
.\"     Title: i2c_add_numbered_adapter
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: I2C and SMBus Subsystem
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "I2C_ADD_NUMBERED_ADA" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "I2C and SMBus Subsystem"
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.SH "NAME"
i2c_add_numbered_adapter \- declare i2c adapter, use static bus number
.SH "SYNOPSIS"
.HP \w'int\ i2c_add_numbered_adapter('u
.BI "int i2c_add_numbered_adapter(struct\ i2c_adapter\ *\ " "adap" ");"
.SH "ARGUMENTS"
.PP
\fIadap\fR
.RS 4
the adapter to register (with adap\->nr initialized)
.RE
.SH "CONTEXT"
.PP
can sleep
.SH "DESCRIPTION"
.PP
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\*(Aqs mainboard, and where i2c_board_info is used to properly configure I2C devices\&.
.PP
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\&.
.PP
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\&.
.PP
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
\fBi2c_register_board_info\fR
is scanned, and the appropriate driver model device nodes are created\&. Otherwise, a negative errno value is returned\&.
.SH "COPYRIGHT"
.br