linux-kernel - [patch v15 4/4] Documentation: jtag: Add ABI documentation

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Message-Id: <1514202808-29747-5-git-send-email-oleksandrs@mellanox.com>
Date:   Mon, 25 Dec 2017 13:53:28 +0200
From:   Oleksandr Shamray <oleksandrs@...lanox.com>
To:     gregkh@...uxfoundation.org, arnd@...db.de
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, openbmc@...ts.ozlabs.org,
        joel@....id.au, jiri@...nulli.us, tklauser@...tanz.ch,
        linux-serial@...r.kernel.org, vadimp@...lanox.com,
        system-sw-low-level@...lanox.com, robh+dt@...nel.org,
        openocd-devel-owner@...ts.sourceforge.net,
        linux-api@...r.kernel.org, davem@...emloft.net, mchehab@...nel.org,
        Oleksandr Shamray <oleksandrs@...lanox.com>
Subject: [patch v15 4/4] Documentation: jtag: Add ABI documentation

Added document that describe the ABI for JTAG class drivrer

Signed-off-by: Oleksandr Shamray <oleksandrs@...lanox.com>
Acked-by: Arnd Bergmann <arnd@...db.de>
---
v14->v15
v13->v14
v12->v13
v11->v12
Tobias Klauser <tklauser@...tanz.ch>
- rename /Documentation/ABI/testing/jatg-dev -> jtag-dev
- Typo: s/interfase/interface
v10->v11
v9->v10
Fixes added by Oleksandr:
- change jtag-cdev to jtag-dev in documentation
- update Kernel Version and Date in jtag-dev documentation;
v8->v9
v7->v8
v6->v7
Comments pointed by Pavel Machek <pavel@....cz>
- Added jtag-cdev documentation to Documentation/ABI/testing folder
---
 Documentation/ABI/testing/jtag-dev |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/ABI/testing/jtag-dev

diff --git a/Documentation/ABI/testing/jtag-dev b/Documentation/ABI/testing/jtag-dev
new file mode 100644
index 0000000..cab867d
--- /dev/null
+++ b/Documentation/ABI/testing/jtag-dev
@@ -0,0 +1,27 @@
+What:		/dev/jtag[0-9]+
+Date:		October 2017
+KernelVersion:	4.15
+Contact:	oleksandrs@...lanox.com
+Description:
+		The misc device files /dev/jtag* are the interface
+		between JTAG master interface and userspace.
+
+		The ioctl(2)-based ABI is defined and documented in
+		[include/uapi]<linux/jtag.h>.
+
+		The following file operations are supported:
+
+		open(2)
+		The argument flag currently support only one access
+		mode O_RDWR.
+
+		ioctl(2)
+		Initiate various actions.
+		See the inline documentation in [include/uapi]<linux/jtag.h>
+		for descriptions of all ioctls.
+
+		close(2)
+		Stops and free up the I/O contexts that was associated
+		with the file descriptor.
+
+Users:		TBD
\ No newline at end of file
-- 
1.7.1