summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 13:31:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 13:31:29 -0700
commite0dccbdf5ac7ccb9da5612100dedba302f3ebcfe (patch)
tree0bdabbf13844ae18da61bc060348850a8038f0ba /Documentation/ABI
parentcf482a49af564a3044de3178ea28f10ad5921b38 (diff)
parente2a5be107f52cefb9010ccae6f569c3ddaa954cc (diff)
downloadlinux-e0dccbdf5ac7ccb9da5612100dedba302f3ebcfe.tar.bz2
Merge tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver updates from Greg KH: "Here is the big staging and iio driver update for 5.2-rc1. Lots of tiny fixes all over the staging and IIO driver trees here, along with some new IIO drivers. The "counter" subsystem was added in here as well, as it is needed by the IIO drivers and subsystem. Also we ended up deleting two drivers, making this pull request remove a few hundred thousand lines of code, always a nice thing to see. Both of the drivers removed have been replaced with "real" drivers in their various subsystem directories, and they will be coming to you from those locations during this merge window. There are some core vt/selection changes in here, that was due to some cleanups needed for the speakup fixes. Those have all been acked by the various subsystem maintainers (i.e. me), so those are ok. We also added a few new drivers, for some odd hardware, giving new developers plenty to work on with basic coding style cleanups to come in the near future. Other than that, nothing unusual here. All of these have been in linux-next for a while with no reported issues, other than an odd gcc warning for one of the new drivers that should be fixed up soon" [ I fixed up the warning myself - Linus ] * tag 'staging-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (663 commits) staging: kpc2000: kpc_spi: Fix build error for {read,write}q Staging: rtl8192e: Remove extra space before break statement Staging: rtl8192u: ieee80211: Fix if-else indentation warning Staging: rtl8192u: ieee80211: Fix indentation errors by removing extra spaces staging: most: cdev: fix chrdev_region leak in mod_exit staging: wlan-ng: Fix improper SPDX comment style staging: rtl8192u: ieee80211: Resolve ERROR reported by checkpatch staging: vc04_services: bcm2835-camera: Compress two lines into one line staging: rtl8723bs: core: Use !x in place of NULL comparison. staging: rtl8723bs: core: Prefer using the BIT Macro. staging: fieldbus: anybus-s: fix wait_for_completion_timeout return handling staging: kpc2000: fix up build problems with readq() staging: rtlwifi: move remaining phydm .h files staging: rtlwifi: strip down phydm .h files staging: rtlwifi: delete the staging driver staging: fieldbus: anybus-s: rename bus id field to avoid confusion staging: fieldbus: anybus-s: keep device bus id in bus endianness Staging: sm750fb: Change *array into *const array staging: rtl8192u: ieee80211: Fix spelling mistake staging: rtl8192u: ieee80211: Replace bit shifting with BIT macro ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-counter230
-rw-r--r--Documentation/ABI/testing/sysfs-bus-counter-104-quad-836
-rw-r--r--Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec16
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio8
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-816
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-impedance-analyzer-ad593335
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-sps302
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-temperature-max3185624
8 files changed, 366 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter
new file mode 100644
index 000000000000..566bd99fe0a5
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter
@@ -0,0 +1,230 @@
+What: /sys/bus/counter/devices/counterX/countY/count
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Count data of Count Y represented as a string.
+
+What: /sys/bus/counter/devices/counterX/countY/ceiling
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Count value ceiling for Count Y. This is the upper limit for the
+ respective counter.
+
+What: /sys/bus/counter/devices/counterX/countY/floor
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Count value floor for Count Y. This is the lower limit for the
+ respective counter.
+
+What: /sys/bus/counter/devices/counterX/countY/count_mode
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Count mode for channel Y. The ceiling and floor values for
+ Count Y are used by the count mode where required. The following
+ count modes are available:
+
+ normal:
+ Counting is continuous in either direction.
+
+ range limit:
+ An upper or lower limit is set, mimicking limit switches
+ in the mechanical counterpart. The upper limit is set to
+ the Count Y ceiling value, while the lower limit is set
+ to the Count Y floor value. The counter freezes at
+ count = ceiling when counting up, and at count = floor
+ when counting down. At either of these limits, the
+ counting is resumed only when the count direction is
+ reversed.
+
+ non-recycle:
+ The counter is disabled whenever a counter overflow or
+ underflow takes place. The counter is re-enabled when a
+ new count value is loaded to the counter via a preset
+ operation or direct write.
+
+ modulo-n:
+ A count value boundary is set between the Count Y floor
+ value and the Count Y ceiling value. The counter is
+ reset to the Count Y floor value at count = ceiling when
+ counting up, while the counter is set to the Count Y
+ ceiling value at count = floor when counting down; the
+ counter does not freeze at the boundary points, but
+ counts continuously throughout.
+
+What: /sys/bus/counter/devices/counterX/countY/count_mode_available
+What: /sys/bus/counter/devices/counterX/countY/error_noise_available
+What: /sys/bus/counter/devices/counterX/countY/function_available
+What: /sys/bus/counter/devices/counterX/countY/signalZ_action_available
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Discrete set of available values for the respective Count Y
+ configuration are listed in this file. Values are delimited by
+ newline characters.
+
+What: /sys/bus/counter/devices/counterX/countY/direction
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the count direction of Count
+ Y. Two count directions are available: forward and backward.
+
+ Some counter devices are able to determine the direction of
+ their counting. For example, quadrature encoding counters can
+ determine the direction of movement by evaluating the leading
+ phase of the respective A and B quadrature encoding signals.
+ This attribute exposes such count directions.
+
+What: /sys/bus/counter/devices/counterX/countY/enable
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Whether channel Y counter is enabled. Valid attribute values are
+ boolean.
+
+ This attribute is intended to serve as a pause/unpause mechanism
+ for Count Y. Suppose a counter device is used to count the total
+ movement of a conveyor belt: this attribute allows an operator
+ to temporarily pause the counter, service the conveyor belt,
+ and then finally unpause the counter to continue where it had
+ left off.
+
+What: /sys/bus/counter/devices/counterX/countY/error_noise
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates whether excessive noise is
+ present at the channel Y counter inputs.
+
+What: /sys/bus/counter/devices/counterX/countY/function
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Count function mode of Count Y; count function evaluation is
+ triggered by conditions specified by the Count Y signalZ_action
+ attributes. The following count functions are available:
+
+ increase:
+ Accumulated count is incremented.
+
+ decrease:
+ Accumulated count is decremented.
+
+ pulse-direction:
+ Rising edges on signal A updates the respective count.
+ The input level of signal B determines direction.
+
+ quadrature x1 a:
+ If direction is forward, rising edges on quadrature pair
+ signal A updates the respective count; if the direction
+ is backward, falling edges on quadrature pair signal A
+ updates the respective count. Quadrature encoding
+ determines the direction.
+
+ quadrature x1 b:
+ If direction is forward, rising edges on quadrature pair
+ signal B updates the respective count; if the direction
+ is backward, falling edges on quadrature pair signal B
+ updates the respective count. Quadrature encoding
+ determines the direction.
+
+ quadrature x2 a:
+ Any state transition on quadrature pair signal A updates
+ the respective count. Quadrature encoding determines the
+ direction.
+
+ quadrature x2 b:
+ Any state transition on quadrature pair signal B updates
+ the respective count. Quadrature encoding determines the
+ direction.
+
+ quadrature x4:
+ Any state transition on either quadrature pair signals
+ updates the respective count. Quadrature encoding
+ determines the direction.
+
+What: /sys/bus/counter/devices/counterX/countY/name
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the device-specific name of
+ Count Y. If possible, this should match the name of the
+ respective channel as it appears in the device datasheet.
+
+What: /sys/bus/counter/devices/counterX/countY/preset
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ If the counter device supports preset registers -- registers
+ used to load counter channels to a set count upon device-defined
+ preset operation trigger events -- the preset count for channel
+ Y is provided by this attribute.
+
+What: /sys/bus/counter/devices/counterX/countY/preset_enable
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Whether channel Y counter preset operation is enabled. Valid
+ attribute values are boolean.
+
+What: /sys/bus/counter/devices/counterX/countY/signalZ_action
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Action mode of Count Y for Signal Z. This attribute indicates
+ the condition of Signal Z that triggers the count function
+ evaluation for Count Y. The following action modes are
+ available:
+
+ none:
+ Signal does not trigger the count function. In
+ Pulse-Direction count function mode, this Signal is
+ evaluated as Direction.
+
+ rising edge:
+ Low state transitions to high state.
+
+ falling edge:
+ High state transitions to low state.
+
+ both edges:
+ Any state transition.
+
+What: /sys/bus/counter/devices/counterX/name
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the device-specific name of
+ the Counter. This should match the name of the device as it
+ appears in its respective datasheet.
+
+What: /sys/bus/counter/devices/counterX/num_counts
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the total number of Counts
+ belonging to the Counter.
+
+What: /sys/bus/counter/devices/counterX/num_signals
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the total number of Signals
+ belonging to the Counter.
+
+What: /sys/bus/counter/devices/counterX/signalY/signal
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Signal data of Signal Y represented as a string.
+
+What: /sys/bus/counter/devices/counterX/signalY/name
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Read-only attribute that indicates the device-specific name of
+ Signal Y. If possible, this should match the name of the
+ respective signal as it appears in the device datasheet.
diff --git a/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8
new file mode 100644
index 000000000000..46b1f33b2fce
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8
@@ -0,0 +1,36 @@
+What: /sys/bus/counter/devices/counterX/signalY/index_polarity
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Active level of index input Signal Y; irrelevant in
+ non-synchronous load mode.
+
+What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available
+What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Discrete set of available values for the respective Signal Y
+ configuration are listed in this file.
+
+What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Configure the counter associated with Signal Y for
+ non-synchronous or synchronous load mode. Synchronous load mode
+ cannot be selected in non-quadrature (Pulse-Direction) clock
+ mode.
+
+ non-synchronous:
+ A logic low level is the active level at this index
+ input. The index function (as enabled via preset_enable)
+ is performed directly on the active level of the index
+ input.
+
+ synchronous:
+ Intended for interfacing with encoder Index output in
+ quadrature clock mode. The active level is configured
+ via index_polarity. The index function (as enabled via
+ preset_enable) is performed synchronously with the
+ quadrature clock on the active level of the index input.
diff --git a/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec b/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec
new file mode 100644
index 000000000000..7d2e7b363467
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec
@@ -0,0 +1,16 @@
+What: /sys/bus/counter/devices/counterX/countY/prescaler_available
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Discrete set of available values for the respective Count Y
+ configuration are listed in this file. Values are delimited by
+ newline characters.
+
+What: /sys/bus/counter/devices/counterX/countY/prescaler
+KernelVersion: 5.2
+Contact: linux-iio@vger.kernel.org
+Description:
+ Configure the prescaler value associated with Count Y.
+ On the FlexTimer, the counter clock source passes through a
+ prescaler (i.e. a counter). This acts like a clock
+ divider.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 864f8efd12e5..6aef7dbbde44 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -1656,6 +1656,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Raw counter device counts from channel Y. For quadrature
counters, multiplication by an available [Y]_scale results in
the counts of a single quadrature signal phase from channel Y.
@@ -1664,6 +1666,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Raw counter device index value from channel Y. This attribute
provides an absolute positional reference (e.g. a pulse once per
revolution) which may be used to home positional systems as
@@ -1673,6 +1677,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
KernelVersion: 4.12
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
A list of possible counting directions which are:
- "up" : counter device is increasing.
- "down": counter device is decreasing.
@@ -1681,6 +1687,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
KernelVersion: 4.12
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Raw counter device counters direction for channel Y.
What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8 b/Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8
index 7fac2c268d9a..bac3d0d48b7b 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8
+++ b/Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8
@@ -6,6 +6,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_index_synchronous_mode_available
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Discrete set of available values for the respective counter
configuration are listed in this file.
@@ -13,6 +15,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_mode
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Count mode for channel Y. Four count modes are available:
normal, range limit, non-recycle, and modulo-n. The preset value
for channel Y is used by the count mode where required.
@@ -47,6 +51,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_noise_error
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Read-only attribute that indicates whether excessive noise is
present at the channel Y count inputs in quadrature clock mode;
irrelevant in non-quadrature clock mode.
@@ -55,6 +61,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_preset
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
If the counter device supports preset registers, the preset
count for channel Y is provided by this attribute.
@@ -62,6 +70,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_quadrature_mode
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Configure channel Y counter for non-quadrature or quadrature
clock mode. Selecting non-quadrature clock mode will disable
synchronous load mode. In quadrature clock mode, the channel Y
@@ -83,6 +93,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_countY_set_to_preset_on_index
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Whether to set channel Y counter with channel Y preset value
when channel Y index input is active, or continuously count.
Valid attribute values are boolean.
@@ -91,6 +103,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_indexY_index_polarity
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Active level of channel Y index input; irrelevant in
non-synchronous load mode.
@@ -98,6 +112,8 @@ What: /sys/bus/iio/devices/iio:deviceX/in_indexY_synchronous_mode
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
+ This interface is deprecated; please use the Counter subsystem.
+
Configure channel Y counter for non-synchronous or synchronous
load mode. Synchronous load mode cannot be selected in
non-quadrature clock mode.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-impedance-analyzer-ad5933 b/Documentation/ABI/testing/sysfs-bus-iio-impedance-analyzer-ad5933
new file mode 100644
index 000000000000..0e86747c67f8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-impedance-analyzer-ad5933
@@ -0,0 +1,35 @@
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_start
+Date: March 2019
+KernelVersion: 3.1.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Frequency sweep start frequency in Hz.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_increment
+Date: March 2019
+KernelVersion: 3.1.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Frequency increment in Hz (step size) between consecutive
+ frequency points along the sweep.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_points
+Date: March 2019
+KernelVersion: 3.1.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Number of frequency points (steps) in the frequency sweep.
+ This value, in conjunction with the
+ out_altvoltageY_frequency_start and the
+ out_altvoltageY_frequency_increment, determines the frequency
+ sweep range for the sweep operation.
+
+What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_settling_cycles
+Date: March 2019
+KernelVersion: 3.1.0
+Contact: linux-iio@vger.kernel.org
+Description:
+ Number of output excitation cycles (settling time cycles)
+ that are allowed to pass through the unknown impedance,
+ after each frequency increment, and before the ADC is triggered
+ to perform a conversion sequence of the response signal.
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-sps30 b/Documentation/ABI/testing/sysfs-bus-iio-sps30
index 143df8e89d08..06e1c272537b 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-sps30
+++ b/Documentation/ABI/testing/sysfs-bus-iio-sps30
@@ -1,6 +1,6 @@
What: /sys/bus/iio/devices/iio:deviceX/start_cleaning
Date: December 2018
-KernelVersion: 4.22
+KernelVersion: 5.0
Contact: linux-iio@vger.kernel.org
Description:
Writing 1 starts sensor self cleaning. Internal fan accelerates
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856 b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856
new file mode 100644
index 000000000000..3b3509a3ef2f
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-temperature-max31856
@@ -0,0 +1,24 @@
+What: /sys/bus/iio/devices/iio:deviceX/fault_oc
+KernelVersion: 5.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Open-circuit fault. The detection of open-circuit faults,
+ such as those caused by broken thermocouple wires.
+ Reading returns either '1' or '0'.
+ '1' = An open circuit such as broken thermocouple wires
+ has been detected.
+ '0' = No open circuit or broken thermocouple wires are detected
+
+What: /sys/bus/iio/devices/iio:deviceX/fault_ovuv
+KernelVersion: 5.1
+Contact: linux-iio@vger.kernel.org
+Description:
+ Overvoltage or Undervoltage Input Fault. The internal circuitry
+ is protected from excessive voltages applied to the thermocouple
+ cables by integrated MOSFETs at the T+ and T- inputs, and the
+ BIAS output. These MOSFETs turn off when the input voltage is
+ negative or greater than VDD.
+ Reading returns either '1' or '0'.
+ '1' = The input voltage is negative or greater than VDD.
+ '0' = The input voltage is positive and less than VDD (normal
+ state).