spi_register_board_i(9)
NAME
spi_register_board_info - register SPI devices for a given board
SYNOPSIS
int __init spi_register_board_info(struct spi_board_info const * info,
unsigned n);
ARGUMENTS
- info
- array of chip descriptors
- n
- how many descriptors are provided
CONTEXT
can sleep
DESCRIPTION
Board-specific early init code calls this (probably during
arch_initcall) with segments of the SPI device table. Any device nodes
are created later, after the relevant parent SPI controller (bus_num)
is defined. We keep this table of devices forever, so that reloading a
controller driver will not make Linux forget about these hard-wired
devices.
Other code can also call this, e.g. a particular add-on board might
provide SPI devices through its expansion connector, so code
initializing that board would naturally declare its SPI devices.
The board info passed can safely be __initdata ... but be careful of
any embedded pointers (platform_data, etc), they´re copied as-is.