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drm/i915/pxp: Define PXP component interface

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This will be used for communication between the i915 driver and the mei
one. Defining it in a stand-alone patch to avoid circualr dependedencies
between the patches modifying the 2 drivers.

Split out from an original patch from  Huang, Sean Z

v2: rename the component struct (Rodrigo)

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-2-alan.previn.teres.alexis@intel.com
This commit is contained in:
Daniele Ceraolo Spurio 2021-09-24 12:14:36 -07:00 committed by Rodrigo Vivi
parent fb2d2de353
commit 288f106897
2 changed files with 43 additions and 0 deletions
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1
include/drm/i915_component.h
View File

@ -29,6 +29,7 @@
enum i915_component_type {
I915_COMPONENT_AUDIO = 1,
I915_COMPONENT_HDCP,
I915_COMPONENT_PXP
};
/* MAX_PORT is the number of port

42
include/drm/i915_pxp_tee_interface.h Normal file
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@ -0,0 +1,42 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef _I915_PXP_TEE_INTERFACE_H_
#define _I915_PXP_TEE_INTERFACE_H_
#include <linux/mutex.h>
#include <linux/device.h>
/**
* struct i915_pxp_component_ops - ops for PXP services.
* @owner: Module providing the ops
* @send: sends data to PXP
* @receive: receives data from PXP
*/
struct i915_pxp_component_ops {
/**
* @owner: owner of the module provding the ops
*/
struct module *owner;
int (*send)(struct device *dev, const void *message, size_t size);
int (*recv)(struct device *dev, void *buffer, size_t size);
};
/**
* struct i915_pxp_component - Used for communication between i915 and TEE
* drivers for the PXP services
* @tee_dev: device that provide the PXP service from TEE Bus.
* @pxp_ops: Ops implemented by TEE driver, used by i915 driver.
*/
struct i915_pxp_component {
struct device *tee_dev;
const struct i915_pxp_component_ops *ops;
/* To protect the above members. */
struct mutex mutex;
};
#endif /* _I915_TEE_PXP_INTERFACE_H_ */