[linux-block.git] / Documentation / driver-api / mei / nfc.rst

.. SPDX-License-Identifier: GPL-2.0

MEI NFC
-------

Some Intel 8 and 9 Series chipsets support 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)"];
   }
Commit	Line	Data
4e3d3b78 TW	1	.. SPDX-License-Identifier: GPL-2.0
	2
	3	MEI NFC
	4	-------
	5
7852fe3a	6	Some Intel 8 and 9 Series chipsets support NFC devices connected behind
4e3d3b78 TW	7	the Intel Management Engine controller.
	8	MEI client bus exposes the NFC chips as NFC phy devices and enables
	9	binding with Microread and NXP PN544 NFC device driver from the Linux NFC
	10	subsystem.
	11
	12	.. kernel-render:: DOT
	13	:alt: MEI NFC digraph
	14	:caption: MEI NFC Stack
	15
	16	digraph NFC {
	17	cl_nfc -> me_cl_nfc;
	18	"drivers/nfc/mei_phy" -> cl_nfc [lhead=bus];
	19	"drivers/nfc/microread/mei" -> cl_nfc;
	20	"drivers/nfc/microread/mei" -> "drivers/nfc/mei_phy";
	21	"drivers/nfc/pn544/mei" -> cl_nfc;
	22	"drivers/nfc/pn544/mei" -> "drivers/nfc/mei_phy";
	23	"net/nfc" -> "drivers/nfc/microread/mei";
	24	"net/nfc" -> "drivers/nfc/pn544/mei";
	25	"neard" -> "net/nfc";
	26	cl_nfc [label="mei/bus(nfc)"];
	27	me_cl_nfc [label="me fw (nfc)"];
	28	}