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iio: hid: Add temperature sensor support

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Environmental temperature sensor is a hid defined sensor,
it measures temperature.

More information can be found in:
http://www.usb.org/developers/hidpage/HUTRR39b.pdf

According to IIO ABI definition, IIO_TEMP data output unit is
milli degrees Celsius. Add the unit convert from degree to milli degree.

Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Song Hongyan 2017-03-03 21:44:32 +08:00 • committed by Jonathan Cameron
parent 0f0c106aa9
commit 59d0f2da35
5 changed files with 333 additions and 0 deletions
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4
include/linux/hid-sensor-ids.h
View file

@ -45,6 +45,10 @@
#define HID_USAGE_SENSOR_DATA_ATMOSPHERIC_PRESSURE 0x200430
#define HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE 0x200431
/* Tempreture (200033) */
#define HID_USAGE_SENSOR_TEMPERATURE 0x200033
#define HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE 0x200434
/* Gyro 3D: (200076) */
#define HID_USAGE_SENSOR_GYRO_3D 0x200076
#define HID_USAGE_SENSOR_DATA_ANGL_VELOCITY 0x200456