From dfd1fb8ac7f9e54b0c49daee12604e3d0b88fcb7 Mon Sep 17 00:00:00 2001 From: Daniele Ceraolo Spurio Date: Fri, 24 Sep 2021 12:14:36 -0700 Subject: [PATCH] drm/i915/pxp: Define PXP component interface 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 Cc: Rodrigo Vivi Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-2-alan.previn.teres.alexis@intel.com --- include/drm/i915_component.h | 1 + include/drm/i915_pxp_tee_interface.h | 42 ++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) create mode 100644 include/drm/i915_pxp_tee_interface.h diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h index 55c3b123581bb..c1e2a43d2d1e4 100644 --- a/include/drm/i915_component.h +++ b/include/drm/i915_component.h @@ -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 diff --git a/include/drm/i915_pxp_tee_interface.h b/include/drm/i915_pxp_tee_interface.h new file mode 100644 index 0000000000000..af593ec644692 --- /dev/null +++ b/include/drm/i915_pxp_tee_interface.h @@ -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 +#include + +/** + * 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_ */ -- 2.39.5