platform.c File Reference

The platform's devices: those that no bus can find (see dev/platform.h). More...

#include <core/system.h>
#include <core/string.h>
#include <core/arch.h>
#include <dev/platform.h>

Go to the source code of this file.

Functions
const struct platform_device *	platform_device_get (const char *name, int index)
	Finds one of the platform's devices by its driver's name.
int	platform_device_io (const struct platform_device *pd, struct ioaddr *io)
	Gets a device's registers, ready for io_in8() and the others.

Detailed Description

The platform's devices: those that no bus can find (see dev/platform.h).

Each platform lists them in its own table, platform_devices[], and a driver looks up the devices it drives there by name.

Definition in file platform.c.

Function Documentation

platform_device_get()

const struct platform_device * platform_device_get	(	const char *	name,
		int	index )

Finds one of the platform's devices by its driver's name.

Parameters

name	the driver's name ("8250", "pl011", "i8042", ...)
index	which of the devices with that name: 0 for the first

Returns

the device, or NULL if there are not that many

Definition at line 21 of file platform.c.

References platform_device::name, NULL, platform_device_get(), and platform_devices.

Referenced by i8042_init(), pl011_init(), platform_device_get(), and uart_8250_init().

platform_device_io()

int platform_device_io	(	const struct platform_device *	pd,
		struct ioaddr *	io )

Gets a device's registers, ready for io_in8() and the others.

Ports are used as they are; memory-mapped registers are mapped first.

Parameters

pd	the device
io	set to its registers

Returns

0, or -ENOMEM if they couldn't be mapped

Definition at line 38 of file platform.c.

References ioaddr::addr, arch_mmio_map(), platform_device::io, IOADDR_PORT, platform_device_io(), platform_device::size, and ioaddr::type.

Referenced by i8042_init(), pl011_init(), platform_device_io(), and uart_8250_attach().