SPI_REGISTER_MASTER(9)            Serial Peripheral Interface (S           SPI_REGISTER_MASTER(9)



NAME
       spi_register_master - register SPI master controller

SYNOPSIS
       int spi_register_master(struct spi_master * master);

ARGUMENTS
       master
           initialized master, originally from spi_alloc_master

CONTEXT
       can sleep

DESCRIPTION
       SPI master controllers connect to their drivers using some non-SPI bus, such as the
       platform bus. The final stage of probe in that code includes calling spi_register_master
       to hook up to this SPI bus glue.

       SPI controllers use board specific (often SOC specific) bus numbers, and board-specific
       addressing for SPI devices combines those numbers with chip select numbers. Since SPI does
       not directly support dynamic device identification, boards need configuration tables
       telling which chip is at which address.

       This must be called from context that can sleep. It returns zero on success, else a
       negative error code (dropping the master's refcount). After a successful return, the
       caller is responsible for calling spi_unregister_master.

RETURN
       zero on success, else a negative error code.

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