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iio: Documentation: move incompatible ABI to obsolete 

Commit 63cd35f34d ("iio: Documentation: update definitions for bufferY and scan_elements")
updated iio documentation in order to point to the newly
per-buffer API, as it is now possible to support multi buffers.

While the previous ABI will be kept forever, the best is
for applications to use the 5.11+ ABI. So, move the
legacy one ABI/obsolete.

This fixes an issue with scripts/get_abi.pl, that doesn't
accept two different Kernel version support for the same
API set.

Fixes: 63cd35f34d ("iio: Documentation: update definitions for bufferY and scan_elements")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a2c802049adee6a5710a58082cfdc1132c5e4c11.1619532170.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Mauro Carvalho Chehab 2021-04-27 16:03:00 +02:00 committed by Jonathan Cameron
parent fb6da706ff
commit caf0fb3bb3
2 changed files with 182 additions and 82 deletions
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182
Documentation/ABI/obsolete/sysfs-bus-iio Normal file
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@ -0,0 +1,182 @@
What: /sys/bus/iio/devices/iio:deviceX/buffer/length
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
Number of scans contained by the buffer.
Since Kernel 5.11, multiple buffers are supported.
so, it is better to use, instead:
/sys/bus/iio/devices/iio:deviceX/bufferY/length
What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
Actually start the buffer capture up. Will start trigger
if first device and appropriate.
Since Kernel 5.11, multiple buffers are supported.
so, it is better to use, instead:
/sys/bus/iio/devices/iio:deviceX/bufferY/enable
What: /sys/bus/iio/devices/iio:deviceX/scan_elements
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
Directory containing interfaces for elements that will be
captured for a single triggered sample set in the buffer.
Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer.
What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
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
What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
Scan element control for triggered data capture.
Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer.
What: /sys/.../iio:deviceX/scan_elements/in_accel_type
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
What: /sys/.../iio:deviceX/scan_elements/in_magn_type
What: /sys/.../iio:deviceX/scan_elements/in_incli_type
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
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
Description of the scan element data storage within the buffer
and hence the form in which it is read from user-space.
Form is [be|le]:[s|u]bits/storagebits[>>shift].
be or le specifies big or little endian. s or u specifies if
signed (2's complement) or unsigned. bits is the number of bits
of data and storagebits is the space (after padding) that it
occupies in the buffer. shift if specified, is the shift that
needs to be applied prior to masking out unused bits. Some
devices put their data in the middle of the transferred elements
with additional information on both sides. Note that some
devices will have additional information in the unused bits
so to get a clean value, the bits value must be used to mask
the buffer output value appropriately. The storagebits value
also specifies the data alignment. So s48/64>>2 will be a
signed 48 bit integer stored in a 64 bit location aligned to
a 64 bit boundary. To obtain the clean value, shift right 2
and apply a mask to zero the top 16 bits of the result.
For other storage combinations this attribute will be extended
appropriately.
Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer.
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
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
KernelVersion: 2.6.37
Description:
A single positive integer specifying the position of this
scan element in the buffer. Note these are not dependent on
what is enabled and may not be contiguous. Thus for user-space
to establish the full layout these must be used in conjunction
with all _en attributes to establish which channels are present,
and the relevant _type attributes to establish the data storage
format.
Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer.
What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
KernelVersion: 4.2
Contact: linux-iio@vger.kernel.org
Description:
A single positive integer specifying the maximum number of scan
elements to wait for.
Poll will block until the watermark is reached.
Blocking read will wait until the minimum between the requested
read amount or the low water mark is available.
Non-blocking read will retrieve the available samples from the
buffer even if there are less samples then watermark level. This
allows the application to block on poll with a timeout and read
the available samples after the timeout expires and thus have a
maximum delay guarantee.
Since Kernel 5.11, multiple buffers are supported.
so, it is better to use, instead:
/sys/bus/iio/devices/iio:deviceX/bufferY/watermark
What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
KernelVersion: 4.16
Contact: linux-iio@vger.kernel.org
Description:
A read-only value indicating the bytes of data available in the
buffer. In the case of an output buffer, this indicates the
amount of empty space available to write data to. In the case of
an input buffer, this indicates the amount of data available for
reading.
Since Kernel 5.11, multiple buffers are supported.
so, it is better to use, instead:
/sys/bus/iio/devices/iio:deviceX/bufferY/data_available

82
Documentation/ABI/testing/sysfs-bus-iio
View File

@ -1238,16 +1238,12 @@ Description:
The name of the trigger source being used, as per string given The name of the trigger source being used, as per string given
in /sys/class/iio/triggerY/name. in /sys/class/iio/triggerY/name.
What: /sys/bus/iio/devices/iio:deviceX/buffer/length
KernelVersion: 2.6.35
What: /sys/bus/iio/devices/iio:deviceX/bufferY/length What: /sys/bus/iio/devices/iio:deviceX/bufferY/length
KernelVersion: 5.11 KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org Contact: linux-iio@vger.kernel.org
Description: Description:
Number of scans contained by the buffer. Number of scans contained by the buffer.
What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
KernelVersion: 2.6.35
What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable
KernelVersion: 5.11 KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org Contact: linux-iio@vger.kernel.org
@ -1255,8 +1251,6 @@ Description:
Actually start the buffer capture up. Will start trigger Actually start the buffer capture up. Will start trigger
if first device and appropriate. if first device and appropriate.
What: /sys/bus/iio/devices/iio:deviceX/scan_elements
KernelVersion: 2.6.37
What: /sys/bus/iio/devices/iio:deviceX/bufferY What: /sys/bus/iio/devices/iio:deviceX/bufferY
KernelVersion: 5.11 KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org Contact: linux-iio@vger.kernel.org
@ -1267,34 +1261,6 @@ Description:
Since kernel 5.11 the scan_elements attributes are merged into Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer. the bufferY directory, to be configurable per buffer.
What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
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
What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
KernelVersion: 2.6.37
What: /sys/.../iio:deviceX/bufferY/in_accel_x_en What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
What: /sys/.../iio:deviceX/bufferY/in_accel_y_en What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
What: /sys/.../iio:deviceX/bufferY/in_accel_z_en What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
@ -1327,23 +1293,6 @@ Contact: linux-iio@vger.kernel.org
Description: Description:
Scan element control for triggered data capture. Scan element control for triggered data capture.
What: /sys/.../iio:deviceX/scan_elements/in_accel_type
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
What: /sys/.../iio:deviceX/scan_elements/in_magn_type
What: /sys/.../iio:deviceX/scan_elements/in_incli_type
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
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
KernelVersion: 2.6.37
What: /sys/.../iio:deviceX/bufferY/in_accel_type What: /sys/.../iio:deviceX/bufferY/in_accel_type
What: /sys/.../iio:deviceX/bufferY/in_anglvel_type What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
What: /sys/.../iio:deviceX/bufferY/in_magn_type What: /sys/.../iio:deviceX/bufferY/in_magn_type
@ -1390,33 +1339,6 @@ Description:
If the type parameter can take one of a small set of values, If the type parameter can take one of a small set of values,
this attribute lists them. this attribute lists them.
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
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
KernelVersion: 2.6.37
What: /sys/.../iio:deviceX/bufferY/in_voltageY_index What: /sys/.../iio:deviceX/bufferY/in_voltageY_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index
@ -1656,8 +1578,6 @@ Description:
Specifies number of seconds in which we compute the steps Specifies number of seconds in which we compute the steps
that occur in order to decide if the consumer is making steps. that occur in order to decide if the consumer is making steps.
What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
KernelVersion: 4.2
What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark
KernelVersion: 5.11 KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org Contact: linux-iio@vger.kernel.org
@ -1676,8 +1596,6 @@ Description:
the available samples after the timeout expires and thus have a the available samples after the timeout expires and thus have a
maximum delay guarantee. maximum delay guarantee.
What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
KernelVersion: 4.16
What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available
KernelVersion: 5.11 KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org Contact: linux-iio@vger.kernel.org