linux_dsm_epyc7002/Documentation/driver-api/mei/nfc.rst
Tomas Winkler 4e3d3b784a 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>
2019-06-06 15:16:00 +02:00

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.. 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)"];
}