'\" t
.\"     Title: i2c_new_secondary_device
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: I2C and SMBus Subsystem
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "I2C_NEW_SECONDARY_DE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "I2C and SMBus Subsystem"
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.SH "NAME"
i2c_new_secondary_device \- Helper to get the instantiated secondary address and create the associated device
.SH "SYNOPSIS"
.HP \w'struct\ i2c_client\ *\ i2c_new_secondary_device('u
.BI "struct i2c_client * i2c_new_secondary_device(struct\ i2c_client\ *\ " "client" ", const\ char\ *\ " "name" ", u16\ " "default_addr" ");"
.SH "ARGUMENTS"
.PP
\fIclient\fR
.RS 4
Handle to the primary client
.RE
.PP
\fIname\fR
.RS 4
Handle to specify which secondary address to get
.RE
.PP
\fIdefault_addr\fR
.RS 4
Used as a fallback if no secondary address was specified
.RE
.SH "CONTEXT"
.PP
can sleep
.SH "DESCRIPTION"
.PP
I2C clients can be composed of multiple I2C slaves bound together in a single component\&. The I2C client driver then binds to the master I2C slave and needs to create I2C dummy clients to communicate with all the other slaves\&.
.PP
This function creates and returns an I2C dummy client whose I2C address is retrieved from the platform firmware based on the given slave name\&. If no address is specified by the firmware default_addr is used\&.
.PP
On DT\-based platforms the address is retrieved from the
\(lqreg\(rq
property entry cell whose
\(lqreg\-names\(rq
value matches the slave name\&.
.PP
This returns the new i2c client, which should be saved for later use with
\fBi2c_unregister_device\fR; or NULL to indicate an error\&.
.SH "COPYRIGHT"
.br