w1: Add support for DS28EA00 sequence to w1-therm

This patch provides support for the DS28EA00 digital thermometer.

The DS28EA00 provides an additional two pins for implementing a sequence
detection algorithm.  This feature allows you to determine the physical
location of the chip in the 1-wire bus without needing pre-existing
knowledge of the bus ordering.  Support is provided through the sysfs
w1_seq file.  The file will contain a single line with an integer value
representing the device index in the bus starting at 0.

Signed-off-by: Matt Campbell <mattrcampbell@gmail.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/ABI/stable/sysfs-driver-w1_ds28ea00 b/Documentation/ABI/stable/sysfs-driver-w1_ds28ea00
new file mode 100644 (file)
index 0000000..e928def
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-driver-w1_ds28ea00
@@ -0,0 +1,6 @@
+What:          /sys/bus/w1/devices/.../w1_seq
+Date:          Apr 2015
+Contact:       Matt Campbell <mattrcampbell@gmail.com>
+Description:   Support for the DS28EA00 chain sequence function
+               see Documentation/w1/slaves/w1_therm for detailed information
+Users:         any user space application which wants to communicate with DS28EA00

diff --cc Documentation/w1/slaves/w1_therm
Simple merge

diff --cc drivers/w1/slaves/w1_therm.c
Simple merge