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>
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index cfd53db..8ec362b 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -170,6 +170,16 @@
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
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index aaca428..c601698 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -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[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index e54d14a..ffafd6c 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -42,6 +42,7 @@ enum iio_chan_type {
IIO_ELECTRICALCONDUCTIVITY,
IIO_COUNT,
IIO_INDEX,
+ IIO_GRAVITY,
};
enum iio_modifier {
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index d9b7e0f..b61245e 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -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;