mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 13:13:57 +08:00
74d1d82cda
Traditionally, any System-on-Chip based platform creates a flat list of platform_devices directly under /sys/devices/platform. In order to give these some better structure, this introduces a new bus type for soc_devices that are registered with the new soc_device_register() function. All devices that are on the same chip should then be registered as child devices of the soc device. The soc bus also exports a few standardised device attributes which allow user space to query the specific type of soc. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
952 B
C
38 lines
952 B
C
/*
|
|
* Copyright (C) ST-Ericsson SA 2011
|
|
* Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson.
|
|
* License terms: GNU General Public License (GPL), version 2
|
|
*/
|
|
#ifndef __SOC_BUS_H
|
|
#define __SOC_BUS_H
|
|
|
|
#include <linux/device.h>
|
|
|
|
struct soc_device_attribute {
|
|
const char *machine;
|
|
const char *family;
|
|
const char *revision;
|
|
const char *soc_id;
|
|
};
|
|
|
|
/**
|
|
* soc_device_register - register SoC as a device
|
|
* @soc_plat_dev_attr: Attributes passed from platform to be attributed to a SoC
|
|
*/
|
|
struct soc_device *soc_device_register(
|
|
struct soc_device_attribute *soc_plat_dev_attr);
|
|
|
|
/**
|
|
* soc_device_unregister - unregister SoC device
|
|
* @dev: SoC device to be unregistered
|
|
*/
|
|
void soc_device_unregister(struct soc_device *soc_dev);
|
|
|
|
/**
|
|
* soc_device_to_device - helper function to fetch struct device
|
|
* @soc: Previously registered SoC device container
|
|
*/
|
|
struct device *soc_device_to_device(struct soc_device *soc);
|
|
|
|
#endif /* __SOC_BUS_H */
|