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mei: docs: add a short description for nfc behind mei 

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
alistair/sunxi64-5.4-dsi
Tomas Winkler 2019-06-03 12:14:04 +03:00 committed by Greg Kroah-Hartman
parent 6080e0cff2
commit 4e3d3b784a
3 changed files with 36 additions and 1 deletions
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2
Documentation/driver-api/mei/index.rst
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@ -16,7 +16,7 @@ Intel(R) Management Engine Interface (Intel(R) MEI)
Table of Contents
.. toctree::
:maxdepth: 2
:maxdepth: 3
mei
mei-client-bus

7
Documentation/driver-api/mei/mei-client-bus.rst
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@ -158,3 +158,10 @@ process received data.
}
MEI Client Bus Drivers
======================
.. toctree::
:maxdepth: 2
nfc

28
Documentation/driver-api/mei/nfc.rst 100644
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@ -0,0 +1,28 @@
.. SPDX-License-Identifier: GPL-2.0
MEI NFC
-------
Some Intel 8 and 9 Serieses chipsets supports NFC devices connected behind
the Intel Management Engine controller.
MEI client bus exposes the NFC chips as NFC phy devices and enables
binding with Microread and NXP PN544 NFC device driver from the Linux NFC
subsystem.
.. kernel-render:: DOT
:alt: MEI NFC digraph
:caption: **MEI NFC** Stack
digraph NFC {
cl_nfc -> me_cl_nfc;
"drivers/nfc/mei_phy" -> cl_nfc [lhead=bus];
"drivers/nfc/microread/mei" -> cl_nfc;
"drivers/nfc/microread/mei" -> "drivers/nfc/mei_phy";
"drivers/nfc/pn544/mei" -> cl_nfc;
"drivers/nfc/pn544/mei" -> "drivers/nfc/mei_phy";
"net/nfc" -> "drivers/nfc/microread/mei";
"net/nfc" -> "drivers/nfc/pn544/mei";
"neard" -> "net/nfc";
cl_nfc [label="mei/bus(nfc)"];
me_cl_nfc [label="me fw (nfc)"];
}