Searched +full:up +full:- +full:samples (Results 1 – 25 of 67) sorted by relevance
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| /Documentation/devicetree/bindings/input/ |
| D | microchip,qt1050.txt | 1 Microchip AT42QT1050 Five-channel Touch Sensor IC
11 - compatible: Must be "microchip,qt1050"
12 - reg: The I2C address of the device
13 - interrupts: The sink for the touchpad's IRQ output,
14 see ../interrupt-controller/interrupts.txt
17 - wakeup-source: touch keys can be used as a wakeup source
19 Each button (key) is represented as a sub-node:
25 - linux,code: Keycode to emit.
26 - reg: The key number. Valid values: 0, 1, 2, 3, 4.
28 Optional subnode-properties:
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| /Documentation/hwmon/ |
| D | ina3221.rst | 10 Addresses: I2C 0x40 - 0x43
19 -----------
22 side of up to three D.C. power supplies. The INA3221 monitors both shunt drop
24 and power are calculated host-side from these.
27 -------------
56 samples Number of samples using in the averaging mode.
58 Supports the list of number of samples:
67 * S: number of samples
68 * BC: bus-voltage conversion time in millisecond
69 * SC: shunt-voltage conversion time in millisecond
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| D | adt7470.rst | 17 -----------
22 The ADT7470 uses the 2-wire interface compatible with the SMBus 2.0
23 specification. Using an analog to digital converter it measures up to ten (10)
24 external temperatures. It has four (4) 16-bit counters for measuring fan speed.
38 The ADT7470 samples all inputs continuously. A kernel thread is started up for
45 ----------------
47 The ADT7470 has a 8-bit ADC and is capable of measuring temperatures with 1
54 -------------------
61 * pwm#_auto_point2_pwm and pwm#_auto_point2_temp -
63 - point1: Set the pwm speed at a lower temperature bound.
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| /Documentation/sound/cards/ |
| D | sb-live-mixer.rst | 19 (index 0) for a given card) allows to forward 48kHz, stereo, 16-bit
21 (coaxial or optical). The universal interface allows the creation of up
22 to 8 raw PCM devices operating at 48kHz, 16-bit little endian. It would
24 but the conversion routines exist only for stereo (2-channel streams)
34 functionality. Only the default built-in code in the ALSA driver is described
48 one-way three wire serial bus for digital sound by Philips Semiconductors
56 FX-bus
63 ---------------------------------------
64 This control is used to attenuate samples from left and right PCM FX-bus
65 accumulators. ALSA uses accumulators 0 and 1 for left and right PCM samples.
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| /Documentation/userspace-api/ |
| D | perf_ring_buffer.rst | 1 .. SPDX-License-Identifier: GPL-2.0
15 2.2.2 Per-thread mode
16 2.2.3 Per-CPU mode
19 2.3.1 Producer-consumer model
21 2.3.3 Writing samples into buffer
22 2.3.4 Reading samples from buffer
55 -------------------
63 +---------------------------+
65 +---------------------------+
66 `-> Tail `-> Head
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| D | dma-buf-alloc-exchange.rst | 1 .. SPDX-License-Identifier: GPL-2.0
2 .. Copyright 2021-2023 Collabora Ltd.
9 support for sharing pixel-buffer allocations between processes, devices, and
12 approach this sharing for two-dimensional image data.
25 Conceptually a two-dimensional array of pixels. The pixels may be stored
30 A span along a single y-axis value, e.g. from co-ordinates (0,100) to
37 A span along a single x-axis value, e.g. from co-ordinates (100,0) to
46 A two-dimensional array of some or all of an image's color and alpha
80 A value that denotes the relationship between pixel-location co-ordinates
81 and byte-offset values. Typically used as the byte offset between two
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| /Documentation/doc-guide/ |
| D | checktransupdate.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 different locales, i.e., whether the documentation is up-to-date with
11 ------------
15 from HEAD. If any differences occur, the file is considered as out-of-date,
20 - check all files in a certain locale
21 - check a single file or a set of files
22 - provide options to change output format
23 - track the translation status of files that have no translation
26 -----
30 ./scripts/checktransupdate.py --help
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| /Documentation/timers/ |
| D | hpet.rst | 8 Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
9 and up to 32 comparators. Normally three or more comparators are provided,
30 file:samples/timers/hpet_example.c
|
| /Documentation/devicetree/bindings/dma/ |
| D | apple,admac.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 Apple's Audio DMA Controller (ADMAC) is used to fetch and store audio samples
13 The controller has been seen with up to 24 channels. Even-numbered channels
14 are TX-only, odd-numbered are RX-only. Individual channels are coupled to
18 - Martin Povišer <povik+lin@cutebit.org>
21 - $ref: dma-controller.yaml#
26 - enum:
27 - apple,t6000-admac
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| /Documentation/input/devices/ |
| D | atarikbd.rst | 12 provides a convenient connection point for a mouse and switch-type joysticks.
13 The ikbd processor also maintains a time-of-day clock with one second
18 The ikbd communicates with the main processor over a high speed bi-directional
41 0xF8-0xFB relative mouse position records (lsbs determined by
43 0xFC time-of-day
58 velocities up to 10 inches per second.
67 ---------------------------
92 +127...-128 range, the motion is broken into multiple packets.
97 ---------------------------
104 ---------------------
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| /Documentation/devicetree/bindings/sound/ |
| D | nvidia,tegra186-dspk.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 Density Modulation (PDM) transmitter that up-samples the input to
13 over sampled Pulse Code Modulation (PCM) input to the desired 1-bit
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
21 - $ref: dai-common.yaml#
25 pattern: "^dspk@[0-9a-f]*$"
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| /Documentation/userspace-api/media/rc/ |
| D | lirc-write.rst | 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
4 .. _lirc-write:
13 lirc-write - Write to a LIRC device
18 .. code-block:: c
39 :c:func:`write()` writes up to ``count`` bytes to the device
47 When in :ref:`LIRC_MODE_PULSE <lirc-mode-PULSE>` mode, the data written to
51 samples. The write function blocks until the data has been transmitted
55 When in :ref:`LIRC_MODE_SCANCODE <lirc-mode-scancode>` mode, one
70 of data required for one frame. On error, -1 is returned, and the ``errno``
72 :ref:`Generic Error Codes <gen-errors>` chapter.
|
| /Documentation/livepatch/ |
| D | callbacks.rst | 5 Livepatch (un)patch-callbacks provide a mechanism for livepatch modules
10 - Safe updates to global data
12 - "Patches" to init and probe functions
14 - Patching otherwise unpatchable code (i.e. assembly)
25 - Module init/exit code doesn't run when disabling and re-enabling a
28 - A module notifier can't stop a to-be-patched module from loading.
39 * Pre-patch
40 - before a klp_object is patched
42 * Post-patch
43 - after a klp_object has been patched and is active
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| /Documentation/userspace-api/media/v4l/ |
| D | pixfmt-srggb8-pisp-comp.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _v4l2-pix-fmt-pisp-comp1-rggb:
4 .. _v4l2-pix-fmt-pisp-comp1-grbg:
5 .. _v4l2-pix-fmt-pisp-comp1-gbrg:
6 .. _v4l2-pix-fmt-pisp-comp1-bggr:
7 .. _v4l2-pix-fmt-pisp-comp1-mono:
8 .. _v4l2-pix-fmt-pisp-comp2-rggb:
9 .. _v4l2-pix-fmt-pisp-comp2-grbg:
10 .. _v4l2-pix-fmt-pisp-comp2-gbrg:
11 .. _v4l2-pix-fmt-pisp-comp2-bggr:
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| /Documentation/sound/designs/ |
| D | timestamping.rst | 7 - Trigger_tstamp is the system time snapshot taken when the .trigger
11 estimate with a delay. In the latter two cases, the low-level driver
17 - tstamp is the current system timestamp updated during the last
19 The difference (tstamp - trigger_tstamp) defines the elapsed time.
24 the ring buffer and the amount of queued samples.
29 - ``avail`` reports how much can be written in the ring buffer
30 - ``delay`` reports the time it will take to hear a new sample after all
31 queued samples have been played out.
43 ascii-art, this could be represented as follows (for the playback
47 --------------------------------------------------------------> time
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| /Documentation/driver-api/media/ |
| D | v4l2-intro.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 ------------
8 /dev, and create also non-V4L2 devices such as DVB, ALSA, FB, I2C and input
15 called 'sub-devices'.
22 connecting to sub-devices themselves. Some of this is quite complicated
28 So this framework sets up the basic building blocks that all drivers
32 A good example to look at as a reference is the v4l2-pci-skeleton.c
33 source that is available in samples/v4l/. It is a skeleton driver for
38 -------------------------
44 2) A way of initializing and commanding sub-devices (if any).
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| /Documentation/trace/coresight/ |
| D | coresight-perf.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 CoreSight - Perf
15 perf record -e cs_etm//u testbinary
22 perf report --stdio --dump -i perf.data
26 …ERF_RECORD_AUXTRACE size: 0x11dd0 offset: 0 ref: 0x1b614fc1061b0ad1 idx: 0 tid: 531230 cpu: -1
48 for the support such as libopencsd and libopencsd-dev or download it
60 ------------------------
81 Perf test - Verify kernel and userspace perf CoreSight work
82 -----------------------------------------------------------
89 Check Arm CoreSight trace data recording and synthesized samples
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| D | coresight-cpu-debug.rst | 9 ------------
11 Coresight CPU debug module is defined in ARMv8-a architecture reference manual
13 debug module and it is mainly used for two modes: self-hosted debug and
16 explore debugging method which rely on self-hosted debug mode, this document
19 The debug module provides sample-based profiling extension, which can be used
21 every CPU has one dedicated debug module to be connected. Based on self-hosted
29 --------------
31 - During driver registration, it uses EDDEVID and EDDEVID1 - two device ID
32 registers to decide if sample-based profiling is implemented or not. On some
36 - At the time this documentation was written, the debug driver mainly relies on
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| /Documentation/devicetree/bindings/memory-controllers/ |
| D | mvebu-devbus.txt | 9 - compatible: Armada 370/XP SoC are supported using the
10 "marvell,mvebu-devbus" compatible string.
13 "marvell,orion-devbus" compatible string.
15 - reg: A resource specifier for the register space.
20 - #address-cells: Must be set to 1
21 - #size-cells: Must be set to 1
22 - ranges: Must be set up to reflect the memory layout with four
23 integer values for each chip-select line in use:
28 - devbus,keep-config This property can optionally be used to keep
37 - devbus,turn-off-ps: Defines the time during which the controller does not
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| /Documentation/core-api/ |
| D | kobject.rst | 5 :Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 Part of the difficulty in understanding the driver model - and the kobject
12 abstraction upon which it is built - is that there is no obvious starting
15 easier, we'll take a multi-pass approach, starting with vague terms and
19 - A kobject is an object of type struct kobject. Kobjects have a name
30 up and incorrect, and your code will be buggy. So do not do this.
32 - A ktype is the type of object that embeds a kobject. Every structure
36 - A kset is a group of kobjects. These kobjects can be of the same ktype
45 We'll look at how to create and manipulate all of these types. A bottom-up
54 a larger, domain-specific object. To this end, kobjects will be found
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| /Documentation/ABI/obsolete/ |
| D | sysfs-bus-iio | 3 Contact: linux-iio@vger.kernel.org
14 Contact: linux-iio@vger.kernel.org
16 Actually start the buffer capture up. Will start trigger
26 Contact: linux-iio@vger.kernel.org
50 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
62 Contact: linux-iio@vger.kernel.org
86 Contact: linux-iio@vger.kernel.org
89 and hence the form in which it is read from user-space.
141 what is enabled and may not be contiguous. Thus for user-space
152 Contact: linux-iio@vger.kernel.org
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| /Documentation/bpf/ |
| D | bpf_devel_QA.rst | 10 Documentation/process/submitting-patches.rst. This document only describes
21 --------------------------------------------
48 ------------------------------------------------------------------------
49 A: BPF CI is GitHub based and hosted at https://github.com/kernel-patches/bpf.
55 - Create a fork of the aforementioned repository in your own account (one time
58 - Clone the fork locally, check out a new branch tracking either the bpf-next
59 or bpf branch, and apply your to-be-tested patches on top of it
61 - Push the local branch to your fork and create a pull request against
62 kernel-patches/bpf's bpf-next_base or bpf_base branch, respectively
68 Note furthermore that both base branches (bpf-next_base and bpf_base) will be
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| /Documentation/trace/ |
| D | tracepoint-analysis.rst | 27 ----------------------
32 $ find /sys/kernel/tracing/events -type d
37 ----------------------------------------
55 3.1 System-Wide Event Enabling
56 ------------------------------
59 can be enabled system-wide. A short example of enabling all events related
62 $ for i in `find /sys/kernel/tracing/events -name "enable" | grep mm_`; do echo 1 > $i; done
64 3.2 System-Wide Event Enabling with SystemTap
65 ---------------------------------------------
79 printf ("%-25s %-s\n", "#Pages Allocated", "Process Name")
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| /Documentation/admin-guide/thermal/ |
| D | intel_powerclamp.rst | 6 - Arjan van de Ven <arjan@linux.intel.com>
7 - Jacob Pan <jacob.jun.pan@linux.intel.com>
12 - Goals and Objectives
15 - Idle Injection
16 - Calibration
19 - Effectiveness and Limitations
20 - Power vs Performance
21 - Scalability
22 - Calibration
23 - Comparison with Alternative Techniques
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| /Documentation/ABI/testing/ |
| D | debugfs-driver-qat_telemetry | 4 Contact: qat-linux@intel.com
12 and average for each counter over 2, 3 or 4 samples
16 * 1-4: telemetry is enabled and running
22 telemetry metrics. Samples are collected every second and
40 Contact: qat-linux@intel.com
56 samples for AE0)
108 Contact: qat-linux@intel.com
109 Description: (RW) Selects up to 4 Ring Pairs (RP) to monitor, one per file,
114 * 0 to ``<num_rps - 1>``:
117 See Documentation/ABI/testing/sysfs-driver-qat.
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