iio: Add I/Q modifiers
I/Q modifiers can be used to denote signals which are represented by a
in-phase and a quadrature component.
The ABI documentation describes the I and Q modifiers for current and
voltage channels for now as those will be the most likely users.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
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 f66262c..bbed111 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -71,6 +71,8 @@
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
@@ -81,6 +83,11 @@
unique to allow association with event codes. Units after
application of scale and offset are millivolts.
+ Channels with 'i' and 'q' modifiers always exist in pairs and both
+ channels refer to the same signal. The 'i' channel contains the in-phase
+ component of the signal while the 'q' channel contains the quadrature
+ component.
+
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
@@ -246,8 +253,16 @@
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
@@ -273,14 +288,22 @@
to the _raw output.
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
@@ -328,6 +351,10 @@
What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
+What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
+What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
+What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
+What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
@@ -1046,6 +1073,10 @@
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
@@ -1064,6 +1095,10 @@
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
@@ -1101,6 +1136,10 @@
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
+What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
+What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
@@ -1260,6 +1299,8 @@
or without compensation from tilt sensors.
What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
KernelVersion: 3.18
Contact: linux-iio@vger.kernel.org
Description:
@@ -1268,6 +1309,11 @@
present, output should be considered as processed with the
unit in milliamps.
+ Channels with 'i' and 'q' modifiers always exist in pairs and both
+ channels refer to the same signal. The 'i' channel contains the in-phase
+ component of the signal while the 'q' channel contains the quadrature
+ component.
+
What: /sys/.../iio:deviceX/in_energy_en
What: /sys/.../iio:deviceX/in_distance_en
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en