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drm/i915/mtl: Define GSC Proxy component interface

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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: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230502163854.317653-2-daniele.ceraolospurio@intel.com
This commit is contained in:
Alexander Usyskin 2023-05-02 09:38:51 -07:00 committed by Daniele Ceraolo Spurio
parent 8b2a7394e5
commit e7b05d95cc
2 changed files with 55 additions and 1 deletions
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3
include/drm/i915_component.h
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@ -29,7 +29,8 @@
enum i915_component_type {
I915_COMPONENT_AUDIO = 1,
I915_COMPONENT_HDCP,
I915_COMPONENT_PXP
I915_COMPONENT_PXP,
I915_COMPONENT_GSC_PROXY,
};
/* MAX_PORT is the number of port

53
include/drm/i915_gsc_proxy_mei_interface.h Normal file
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@ -0,0 +1,53 @@
/* 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_ */