diff options
| author |   Pi-Hsun Shih <pihsun@chromium.org> | 2019-11-12 19:03:26 +0800 |
|---|---|---|
| committer |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-01-20 10:29:56 -0800 |
| commit | 7017996951fde84698ddfe7fd47f92bd9d9eb85d (patch) | |
| tree | ed20cf19e91e293cae1912bcce6186b34f164f23 /include/linux/rpmsg | |
| parent | remoteproc/mediatek: add SCP support for mt8183 (diff) | |
| download | wireguard-linux-7017996951fde84698ddfe7fd47f92bd9d9eb85d.tar.xz wireguard-linux-7017996951fde84698ddfe7fd47f92bd9d9eb85d.zip | |
rpmsg: add rpmsg support for mt8183 SCP.
Add a simple rpmsg support for mt8183 SCP, that use IPI / IPC directly.
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Link: https://lore.kernel.org/r/20191112110330.179649-4-pihsun@chromium.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'include/linux/rpmsg')
| -rw-r--r-- | include/linux/rpmsg/mtk_rpmsg.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/rpmsg/mtk_rpmsg.h b/include/linux/rpmsg/mtk_rpmsg.h new file mode 100644 index 000000000000..363b60178040 --- /dev/null +++ b/include/linux/rpmsg/mtk_rpmsg.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2019 Google LLC. + */ + +#ifndef __LINUX_RPMSG_MTK_RPMSG_H +#define __LINUX_RPMSG_MTK_RPMSG_H + +#include <linux/platform_device.h> +#include <linux/remoteproc.h> + +typedef void (*ipi_handler_t)(void *data, unsigned int len, void *priv); + +/* + * struct mtk_rpmsg_info - IPI functions tied to the rpmsg device. + * @register_ipi: register IPI handler for an IPI id. + * @unregister_ipi: unregister IPI handler for a registered IPI id. + * @send_ipi: send IPI to an IPI id. wait is the timeout (in msecs) to wait + * until response, or 0 if there's no timeout. + * @ns_ipi_id: the IPI id used for name service, or -1 if name service isn't + * supported. + */ +struct mtk_rpmsg_info { + int (*register_ipi)(struct platform_device *pdev, u32 id, + ipi_handler_t handler, void *priv); + void (*unregister_ipi)(struct platform_device *pdev, u32 id); + int (*send_ipi)(struct platform_device *pdev, u32 id, + void *buf, unsigned int len, unsigned int wait); + int ns_ipi_id; +}; + +struct rproc_subdev * +mtk_rpmsg_create_rproc_subdev(struct platform_device *pdev, + struct mtk_rpmsg_info *info); + +void mtk_rpmsg_destroy_rproc_subdev(struct rproc_subdev *subdev); + +#endif |