linux-kernel - [PATCH 3/3] i2c: slave: add documentation for i2c-slave-eeprom

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Message-Id: <1426164123-8853-4-git-send-email-wsa@the-dreams.de>
Date:	Thu, 12 Mar 2015 13:42:03 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	linux-i2c@...r.kernel.org
Cc:	linux-sh@...r.kernel.org, Magnus Damm <magnus.damm@...il.com>,
	Simon Horman <horms@...ge.net.au>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>, Andrey Danin <danindrey@...l.ru>,
	Marc Dietrich <marvin24@....de>,
	Debora Grosse <debora@....com>, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] i2c: slave: add documentation for i2c-slave-eeprom

From: Wolfram Sang <wsa+renesas@...g-engineering.com>

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 Documentation/i2c/slave-eeprom-backend | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 Documentation/i2c/slave-eeprom-backend

diff --git a/Documentation/i2c/slave-eeprom-backend b/Documentation/i2c/slave-eeprom-backend
new file mode 100644
index 00000000000000..c8444ef82acfa3
--- /dev/null
+++ b/Documentation/i2c/slave-eeprom-backend
@@ -0,0 +1,14 @@
+Linux I2C slave eeprom backend
+==============================
+
+by Wolfram Sang <wsa@...g-engineering.com> in 2014-15
+
+This is a proof-of-concept backend which acts like an EEPROM on the connected
+I2C bus. The memory contents can be modified from userspace via this file
+located in sysfs:
+
+	/sys/bus/i2c/devices/<device-direcory>/slave-eeprom
+
+As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
+notfication when another master changed the content.
+
-- 
2.1.4

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