drivers/rpmsg/rpmsg_char.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2022, STMicroelectronics
   4  */
   5
   6 #ifndef __RPMSG_CHRDEV_H__
   7 #define __RPMSG_CHRDEV_H__
   8
   9 #if IS_ENABLED(CONFIG_RPMSG_CHAR)
  10 /**
  11  * rpmsg_chrdev_eptdev_create() - register char device based on an endpoint
  12  * @rpdev:  prepared rpdev to be used for creating endpoints
  13  * @parent: parent device
  14  * @chinfo: associated endpoint channel information.
  15  *
  16  * This function create a new rpmsg char endpoint device to instantiate a new
  17  * endpoint based on chinfo information.
  18  */
  19 int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
  20                                struct rpmsg_channel_info chinfo);
  21
  22 /**
  23  * rpmsg_chrdev_eptdev_destroy() - destroy created char device endpoint.
  24  * @data: private data associated to the endpoint device
  25  *
  26  * This function destroys a rpmsg char endpoint device created by the RPMSG_DESTROY_EPT_IOCTL
  27  * control.
  28  */
  29 int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data);
  30
  31 #else  /*IS_ENABLED(CONFIG_RPMSG_CHAR) */
  32
  33 static inline int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent,
  34                                              struct rpmsg_channel_info chinfo)
  35 {
  36         return -ENXIO;
  37 }
  38
  39 static inline int rpmsg_chrdev_eptdev_destroy(struct device *dev, void *data)
  40 {
  41         return -ENXIO;
  42 }
  43
  44 #endif /*IS_ENABLED(CONFIG_RPMSG_CHAR) */
  45
  46 #endif /*__RPMSG_CHRDEV_H__ */