drivers/rpmsg/rpmsg_char.h

Source file repositories/reference/linux-study-clean/drivers/rpmsg/rpmsg_char.h

File Facts

System
Linux kernel
Corpus path
drivers/rpmsg/rpmsg_char.h
Extension
.h
Size
1342 bytes
Lines
47
Domain
Driver Families
Bucket
drivers/rpmsg
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __RPMSG_CHRDEV_H__
#define __RPMSG_CHRDEV_H__

#if IS_ENABLED(CONFIG_RPMSG_CHAR)
/**
 * rpmsg_chrdev_eptdev_create() - register char device based on an endpoint
 * @rpdev:  prepared rpdev to be used for creating endpoints
 * @parent: parent device
 * @chinfo: associated endpoint channel information.
 *
 * This function create a new rpmsg char endpoint device to instantiate a new
 * endpoint based on chinfo information.
 */
int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
			       struct rpmsg_channel_info chinfo);

/**
 * rpmsg_chrdev_eptdev_destroy() - destroy created char device endpoint.
 * @data: private data associated to the endpoint device
 *
 * This function destroys a rpmsg char endpoint device created by the RPMSG_DESTROY_EPT_IOCTL
 * control.
 */
int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data);

#else  /*IS_ENABLED(CONFIG_RPMSG_CHAR) */

static inline int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
					     struct rpmsg_channel_info chinfo)
{
	return -ENXIO;
}

static inline int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data)
{
	return -ENXIO;
}

#endif /*IS_ENABLED(CONFIG_RPMSG_CHAR) */

#endif /*__RPMSG_CHRDEV_H__ */

Annotation

Implementation Notes