hwmon: Honeywell Humidicon HIH-6130/HIH-6131 humidity and temperature sensor driver

This is a new driver for the Honeywell Humidicon HIH-6130/HIH-6131 humidity sensor.

The driver is based on the existing Sensiron sht21 driver with the necessary changes
to the probe, update_measurements and conversion functions necessary to use the
Honeywell sensors.

There's no difference between the 6130 & 6131 other than the 6131 having an external
condensation filter attached.

Signed-off-by: Iain Paton <ipaton0@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 37 insertions, 0 deletions

diff --git a/Documentation/hwmon/hih6130 b/Documentation/hwmon/hih6130
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+Kernel driver hih6130
+=====================
+
+Supported chips:
+  * Honeywell HIH-6130 / HIH-6131
+    Prefix: 'hih6130'
+    Addresses scanned: none
+    Datasheet: Publicly available at the Honeywell website
+    http://sensing.honeywell.com/index.php?ci_id=3106&la_id=1&defId=44872
+
+Author:
+  Iain Paton <ipaton0@gmail.com>
+
+Description
+-----------
+
+The HIH-6130 & HIH-6131 are humidity and temperature sensors in a SO8 package.
+The difference between the two devices is that the HIH-6131 has a condensation
+filter.
+
+The devices communicate with the I2C protocol. All sensors are set to the same
+I2C address 0x27 by default, so an entry with I2C_BOARD_INFO("hih6130", 0x27)
+can be used in the board setup code.
+
+Please see Documentation/i2c/instantiating-devices for details on how to
+instantiate I2C devices.
+
+sysfs-Interface
+---------------
+
+temp1_input - temperature input
+humidity1_input - humidity input
+
+Notes
+-----
+
+Command mode and alarms are not currently supported.