Commit e7b05d95 authored by Alexander Usyskin's avatar Alexander Usyskin Committed by Daniele Ceraolo Spurio
Browse files

drm/i915/mtl: Define GSC Proxy component interface 



GSC Proxy component is used for communication between the
Intel graphics driver and MEI driver.

Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Signed-off-by: default avatarAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarAlan Previn <alan.previn.teres.alexis@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230502163854.317653-2-daniele.ceraolospurio@intel.com
parent 8b2a7394

include/drm/i915_component.h

+2 −1
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@@ -29,7 +29,8 @@ 
enum i915_component_type {

enum i915_component_type {

	I915_COMPONENT_AUDIO = 1,

	I915_COMPONENT_AUDIO = 1,

	I915_COMPONENT_HDCP,

	I915_COMPONENT_HDCP,

	I915_COMPONENT_PXP

	I915_COMPONENT_PXP,

	I915_COMPONENT_GSC_PROXY,

};

};





/* MAX_PORT is the number of port

/* MAX_PORT is the number of port

include/drm/i915_gsc_proxy_mei_interface.h

0 → 100644
+53 −0
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/* SPDX-License-Identifier: MIT */

/*

 * Copyright (c) 2022-2023 Intel Corporation

 */



#ifndef _I915_GSC_PROXY_MEI_INTERFACE_H_

#define _I915_GSC_PROXY_MEI_INTERFACE_H_



#include <linux/types.h>



struct device;

struct module;



/**

 * struct i915_gsc_proxy_component_ops - ops for GSC Proxy services.

 * @owner: Module providing the ops

 * @send: sends a proxy message from GSC FW to ME FW

 * @recv: receives a proxy message for GSC FW from ME FW

 */

struct i915_gsc_proxy_component_ops {

	struct module *owner;



	/**

	 * send - Sends a proxy message to ME FW.

	 * @dev: device struct corresponding to the mei device

	 * @buf: message buffer to send

	 * @size: size of the message

	 * Return: bytes sent on success, negative errno value on failure

	 */

	int (*send)(struct device *dev, const void *buf, size_t size);



	/**

	 * recv - Receives a proxy message from ME FW.

	 * @dev: device struct corresponding to the mei device

	 * @buf: message buffer to contain the received message

	 * @size: size of the buffer

	 * Return: bytes received on success, negative errno value on failure

	 */

	int (*recv)(struct device *dev, void *buf, size_t size);

};



/**

 * struct i915_gsc_proxy_component - Used for communication between i915 and

 * MEI drivers for GSC proxy services

 * @mei_dev: device that provide the GSC proxy service.

 * @ops: Ops implemented by GSC proxy driver, used by i915 driver.

 */

struct i915_gsc_proxy_component {

	struct device *mei_dev;

	const struct i915_gsc_proxy_component_ops *ops;

};



#endif /* _I915_GSC_PROXY_MEI_INTERFACE_H_ */