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authorSumit Garg <sumit.garg@linaro.org>2019-01-29 08:49:35 +0300
committerJens Wiklander <jens.wiklander@linaro.org>2019-02-01 17:12:46 +0300
commit0fc1db9d105915021260eb241661b8e96f5c0f1a (patch)
tree5e5d608e2a01aaeec416ade44d47036638ad7289 /include/linux/mod_devicetable.h
parent42bf4152d8a79f89f5456dee63a1f364fbce2dd6 (diff)
downloadlinux-0fc1db9d105915021260eb241661b8e96f5c0f1a.tar.xz
tee: add bus driver framework for TEE based devices
Introduce a generic TEE bus driver concept for TEE based kernel drivers which would like to communicate with TEE based devices/services. Also add support in module device table for these new TEE based devices. In this TEE bus concept, devices/services are identified via Universally Unique Identifier (UUID) and drivers register a table of device UUIDs which they can support. So this TEE bus framework registers following apis: - match(): Iterates over the driver UUID table to find a corresponding match for device UUID. If a match is found, then this particular device is probed via corresponding probe api registered by the driver. This process happens whenever a device or a driver is registered with TEE bus. - uevent(): Notifies user-space (udev) whenever a new device is registered on this bus for auto-loading of modularized drivers. Also this framework allows for device enumeration to be specific to corresponding TEE implementation like OP-TEE etc. Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'include/linux/mod_devicetable.h')
-rw-r--r--include/linux/mod_devicetable.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index f9bd2f34b99f..14eaeeb46f41 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -779,4 +779,13 @@ struct typec_device_id {
kernel_ulong_t driver_data;
};
+/**
+ * struct tee_client_device_id - tee based device identifier
+ * @uuid: For TEE based client devices we use the device uuid as
+ * the identifier.
+ */
+struct tee_client_device_id {
+ uuid_t uuid;
+};
+
#endif /* LINUX_MOD_DEVICETABLE_H */