I2C_NEW_SECONDARY_DE(9)              I2C and SMBus Subsystem              I2C_NEW_SECONDARY_DE(9)



NAME
       i2c_new_secondary_device - Helper to get the instantiated secondary address and create the
       associated device

SYNOPSIS
       struct i2c_client * i2c_new_secondary_device(struct i2c_client * client,
                                                    const char * name, u16 default_addr);

ARGUMENTS
       client
           Handle to the primary client

       name
           Handle to specify which secondary address to get

       default_addr
           Used as a fallback if no secondary address was specified

CONTEXT
       can sleep

DESCRIPTION
       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.

       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.

       On DT-based platforms the address is retrieved from the “reg” property entry cell whose
       “reg-names” value matches the slave name.

       This returns the new i2c client, which should be saved for later use with
       i2c_unregister_device; or NULL to indicate an error.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   I2C_NEW_SECONDARY_DE(9)