From b1a8750d2466348cc650063204a7d7f6cd4ac08d Mon Sep 17 00:00:00 2001
From: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Date: Fri, 24 Sep 2021 12:14:36 -0700
Subject: drm/i915/pxp: Define PXP component interface
Git-commit: 288f1068975583bc63e68a61731453b0f07a46af
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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 55c3b123581b..c1e2a43d2d1e 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 000000000000..af593ec64469
--- /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 <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_ */
--
2.38.1