summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorGuenter Roeck <linux@roeck-us.net>2015-11-08 02:54:33 +0300
committerGuenter Roeck <linux@roeck-us.net>2015-12-18 19:20:59 +0300
commit2ff44072e34d5b6567d3d59b507e54c73b084db7 (patch)
treed692e98fea86b882352ce8ba8b75e160beb0e139 /Documentation
parenta3a316cfc41ab3e7b9e0079338f8ea9dff911d88 (diff)
downloadlinux-2ff44072e34d5b6567d3d59b507e54c73b084db7.tar.xz
hwmon: (htu21) Remove driver
HTU21 is now supported by IIO, and can be instantiated as hwmon driver using the iio-hwmon bridge. An explicit hwmon driver is no longer needed. Cc: William Markezana <william.markezana@meas-spec.com> Cc: Ludovic Tancerel <ludovic.tancerel@maplehightech.com> Cc: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/hwmon/htu2146
1 files changed, 0 insertions, 46 deletions
diff --git a/Documentation/hwmon/htu21 b/Documentation/hwmon/htu21
deleted file mode 100644
index f39a215fb6ae..000000000000
--- a/Documentation/hwmon/htu21
+++ /dev/null
@@ -1,46 +0,0 @@
-Kernel driver htu21
-===================
-
-Supported chips:
- * Measurement Specialties HTU21D
- Prefix: 'htu21'
- Addresses scanned: none
- Datasheet: Publicly available at the Measurement Specialties website
- http://www.meas-spec.com/downloads/HTU21D.pdf
-
-
-Author:
- William Markezana <william.markezana@meas-spec.com>
-
-Description
------------
-
-The HTU21D is a humidity and temperature sensor in a DFN package of
-only 3 x 3 mm footprint and 0.9 mm height.
-
-The devices communicate with the I2C protocol. All sensors are set to the
-same I2C address 0x40, so an entry with I2C_BOARD_INFO("htu21", 0x40) can
-be used in the board setup code.
-
-This driver does not auto-detect devices. You will have to instantiate the
-devices explicitly. Please see Documentation/i2c/instantiating-devices
-for details.
-
-sysfs-Interface
----------------
-
-temp1_input - temperature input
-humidity1_input - humidity input
-
-Notes
------
-
-The driver uses the default resolution settings of 12 bit for humidity and 14
-bit for temperature, which results in typical measurement times of 11 ms for
-humidity and 44 ms for temperature. To keep self heating below 0.1 degree
-Celsius, the device should not be active for more than 10% of the time. For
-this reason, the driver performs no more than two measurements per second and
-reports cached information if polled more frequently.
-
-Different resolutions, the on-chip heater, using the CRC checksum and reading
-the serial number are not supported yet.