rpmsg: add rpmsg support for mt8183 SCP.

Add a simple rpmsg support for mt8183 SCP, that use IPI / IPC directly.

Pi-Hsun Shih committed 7 years ago

Commit 70179961 parent 63c13d69 files · +525 −5Browse files

Showing the changes to include/linux (2 of 9 files). Show all

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2 files

@@ -41,7 +41,8 @@ enum scp_ipi_id { · 40 unmodified lines
41	SCP_IPI_ISP_FRAME,	41	SCP_IPI_ISP_FRAME,
42	SCP_IPI_FD_CMD,	42	SCP_IPI_FD_CMD,
43	SCP_IPI_CROS_HOST_CMD,	43	SCP_IPI_CROS_HOST_CMD,
44	SCP_IPI_MAX,	44	SCP_IPI_NS_SERVICE = 0xFF,
		45	SCP_IPI_MAX = 0x100,
45	};	46	};
46		47
47	struct mtk_scp scp_get(struct platform_device pdev);	48	struct mtk_scp scp_get(struct platform_device pdev);

@@ -0,0 +1,38 @@
	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

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