include/linux/rpmsg/mtk_rpmsg.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright 2019 Google LLC.
   4  */
   5
   6 #ifndef __LINUX_RPMSG_MTK_RPMSG_H
   7 #define __LINUX_RPMSG_MTK_RPMSG_H
   8
   9 #include <linux/platform_device.h>
  10 #include <linux/remoteproc.h>
  11
  12 typedef void (*ipi_handler_t)(void *data, unsigned int len, void *priv);
  13
  14 /*
  15  * struct mtk_rpmsg_info - IPI functions tied to the rpmsg device.
  16  * @register_ipi: register IPI handler for an IPI id.
  17  * @unregister_ipi: unregister IPI handler for a registered IPI id.
  18  * @send_ipi: send IPI to an IPI id. wait is the timeout (in msecs) to wait
  19  *            until response, or 0 if there's no timeout.
  20  * @ns_ipi_id: the IPI id used for name service, or -1 if name service isn't
  21  *             supported.
  22  */
  23 struct mtk_rpmsg_info {
  24         int (*register_ipi)(struct platform_device *pdev, u32 id,
  25                             ipi_handler_t handler, void *priv);
  26         void (*unregister_ipi)(struct platform_device *pdev, u32 id);
  27         int (*send_ipi)(struct platform_device *pdev, u32 id,
  28                         void *buf, unsigned int len, unsigned int wait);
  29         int ns_ipi_id;
  30 };
  31
  32 struct rproc_subdev *
  33 mtk_rpmsg_create_rproc_subdev(struct platform_device *pdev,
  34                               struct mtk_rpmsg_info *info);
  35
  36 void mtk_rpmsg_destroy_rproc_subdev(struct rproc_subdev *subdev);
  37
  38 #endif