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iio: Add channel for Gravity 

Add new channel types support for gravity sensor.

Gravity sensor provides an application-level or physical collection that
identifies a device that measures exclusively the force of Earth's
gravity along any number of axes.

More information can be found in:
http://www.usb.org/developers/hidpage/HUTRR59_-_Usages_for_Wearables.pdf

Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Song Hongyan 2017-01-05 18:24:03 +08:00 committed by Jonathan Cameron
parent b257c1a45e
commit 571299d099
4 changed files with 14 additions and 0 deletions
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10
Documentation/ABI/testing/sysfs-bus-iio
View File

@ -170,6 +170,16 @@ Description:
Has all of the equivalent parameters as per voltageY. Units
after application of scale and offset are m/s^2.
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
KernelVersion: 4.11
Contact: linux-iio@vger.kernel.org
Description:
Gravity in direction x, y or z (may be arbitrarily assigned
but should match other such assignments on device).
Units after application of scale and offset are m/s^2.
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw

1
drivers/iio/industrialio-core.c
View File

@ -83,6 +83,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_ELECTRICALCONDUCTIVITY] = "electricalconductivity",
[IIO_COUNT] = "count",
[IIO_INDEX] = "index",
[IIO_GRAVITY] = "gravity",
};
static const char * const iio_modifier_names[] = {

1
include/uapi/linux/iio/types.h
View File

@ -42,6 +42,7 @@ enum iio_chan_type {
IIO_ELECTRICALCONDUCTIVITY,
IIO_COUNT,
IIO_INDEX,
IIO_GRAVITY,
};
enum iio_modifier {

2
tools/iio/iio_event_monitor.c
View File

@ -57,6 +57,7 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_RESISTANCE] = "resistance",
[IIO_PH] = "ph",
[IIO_UVINDEX] = "uvindex",
[IIO_GRAVITY] = "gravity",
};
static const char * const iio_ev_type_text[] = {
@ -149,6 +150,7 @@ static bool event_is_known(struct iio_event_data *event)
case IIO_RESISTANCE:
case IIO_PH:
case IIO_UVINDEX:
case IIO_GRAVITY:
break;
default:
return false;