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/Documentation/ABI/testing/
Dsysfs-bus-coresight-devices-cti4 Contact: Mike Leach or Mathieu Poirier
10 Contact: Mike Leach or Mathieu Poirier
16 Contact: Mike Leach or Mathieu Poirier
22 Contact: Mike Leach or Mathieu Poirier
28 Contact: Mike Leach or Mathieu Poirier
34 Contact: Mike Leach or Mathieu Poirier
40 Contact: Mike Leach or Mathieu Poirier
47 Contact: Mike Leach or Mathieu Poirier
53 Contact: Mike Leach or Mathieu Poirier
60 Contact: Mike Leach or Mathieu Poirier
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Dsysfs-devices-online7 callbacks. The number read from it (0 or 1) reflects the value
9 (or 'n', or 'N') is written to this file, the device bus type's
12 turn, if that number is 0 and '1' (or 'y', or 'Y') is written to
19 it is removed (i.e. device_del() is called for it), or its bus
/Documentation/scsi/
DLICENSE.FlashPoint7 This program is free software; you may redistribute and/or modify it under
11 Foundation; either version 2, or (at your option) any later version,
13 or
19 or FITNESS FOR A PARTICULAR PURPOSE. See either the GNU General Public
20 License or the BSD-style License below for more details.
28 Redistribution and use in source and binary forms, with or without
44 documentation and/or other materials provided with the distribution.
46 3. The name of Mylex Corporation may not be used to endorse or promote
50 THIS SOFTWARE IS PROVIDED BY MYLEX CORP. ``AS IS'' AND ANY EXPRESS OR
53 NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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/Documentation/process/
Dcode-of-conduct.rst14 personal appearance, race, religion, or sexual identity and orientation.
31 * The use of sexualized language or imagery and unwelcome sexual attention or
33 * Trolling, insulting/derogatory comments, and personal or political attacks
34 * Public or private harassment
35 * Publishing others’ private information, such as a physical or electronic
48 Maintainers have the right and responsibility to remove, edit, or reject
50 not aligned to this Code of Conduct, or to ban temporarily or permanently any
52 offensive, or harmful.
58 when an individual is representing the project or its community. Examples of
59 representing a project or community include using an official project e-mail
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/Documentation/userspace-api/media/v4l/
Dtuner.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 Video input devices can have one or more tuners demodulating a RF
14 signal. Each tuner is associated with one or more video inputs,
29 current video or radio input is queried.
38 device has one or more tuners.
44 Video output devices can have one or more modulators, that modulate a
45 video signal for radiation or connection to the antenna input of a TV
46 set or video recorder. Each modulator is associated with one or more
57 A video or radio device cannot support both a tuner and a modulator. Two
62 cannot specify whether the frequency is for a tuner or a modulator.
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Dvidioc-g-tuner.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_TUNER - VIDIOC_S_TUNER - Get or set tuner attributes
42 or return an ``EINVAL`` error code when the index is out of bounds. To
51 different audio mode if the requested mode is invalid or unsupported.
102 - :cspan:`1` The lowest tunable frequency in units of 62.5 kHz, or
104 of 62.5 Hz, or if the ``capability`` flag ``V4L2_TUNER_CAP_1HZ``
111 or if the ``capability`` flag ``V4L2_TUNER_CAP_LOW`` is set, in
112 units of 62.5 Hz, or if the ``capability`` flag
120 Some tuners or audio decoders can determine the received audio
121 subprograms by analyzing audio carriers, pilot tones or other
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Ddev-radio.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
21 ``V4L2_CAP_TUNER`` or ``V4L2_CAP_MODULATOR`` flag in the
32 the :ref:`tuner or modulator <tuner>` ioctls.
34 They do not support the video input or output, audio input or output,
36 parameter, or overlay ioctls. All other ioctls and I/O methods are
45 Further all radio devices have one tuner or modulator (these are
47 frequency and to determine if a monaural or FM stereo program is
50 :ref:`VIDIOC_G_TUNER <VIDIOC_G_TUNER>` or
Ddev-raw-vbi.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
16 transmissions of services such as Teletext or Closed Caption.
19 signal, or to be added to a signal for output. The data format is
31 ``/dev/video``. To capture or output raw VBI data with these devices
33 Accessed as ``/dev/vbi``, raw VBI capturing or output is the default
39 Devices supporting the raw VBI capturing or output API set the
40 ``V4L2_CAP_VBI_CAPTURE`` or ``V4L2_CAP_VBI_OUTPUT`` flags, respectively,
44 read/write or streaming I/O methods must be supported. VBI
45 devices may or may not have a tuner or modulator.
50 VBI devices shall support :ref:`video input or output <video>`,
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Dvidioc-streamon.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_STREAMON - VIDIOC_STREAMOFF - Start or stop streaming I/O
39 the capture or output process during streaming
40 (:ref:`memory mapping <mmap>`, :ref:`user pointer <userp>` or
54 The ``VIDIOC_STREAMOFF`` ioctl, apart of aborting or finishing any DMA
70 Both ioctls take a pointer to an integer, the desired buffer or stream
75 or if ``VIDIOC_STREAMOFF`` is called when streaming is already stopped,
83 or after the ``VIDIOC_STREAMON`` or ``VIDIOC_STREAMOFF`` calls, there is
84 no notion of starting or stopping "now". Buffer timestamps can be used
95 The buffer ``type`` is not supported, or no buffers have been
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Dvidioc-qbuf.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
39 (capturing) or filled (output) buffer in the driver's incoming queue.
54 or ``V4L2_BUF_TYPE_VBI_OUTPUT``) applications must also initialize the
67 the ``V4L2_BUF_FLAG_DONE`` flag in the ``flags`` field, or it returns an
78 ``flags`` field, or it returns an error code. This ioctl locks the
81 :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` or
82 :ref:`VIDIOC_REQBUFS` ioctl is called, or until the
93 ``flags`` field, or it returns an error code. This ioctl locks the
97 dequeued, until the :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>` or
98 :ref:`VIDIOC_REQBUFS` ioctl is called, or until the
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Dvidioc-g-modulator.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_MODULATOR - VIDIOC_S_MODULATOR - Get or set modulator attributes
42 fill the rest of the structure or return an ``EINVAL`` error code when the
89 - The lowest tunable frequency in units of 62.5 KHz, or if the
91 62.5 Hz, or if the ``capability`` flag ``V4L2_TUNER_CAP_1HZ`` is
95 - The highest tunable frequency in units of 62.5 KHz, or if the
97 62.5 Hz, or if the ``capability`` flag ``V4L2_TUNER_CAP_1HZ`` is
109 are assumed to have an analog or PCM audio input with 1-3
110 channels. The ``txsubchans`` flags select one or more channels
137 combine with ``V4L2_TUNER_SUB_STEREO`` or
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Dstandard.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
9 Video devices typically support one or more different video standards or
28 or do so internal and switch automatically. Therefore enumerated
29 standards also contain sets of one or more standard bits.
33 automatically depending on the selected radio frequency in UHF or VHF
34 band. Enumeration gives a "PAL-B/G" or "PAL-I" choice. Similar a
38 To query and select the standard used by the current video input or
49 standard ioctls when the device has one or more video inputs or outputs.
52 video standards makes little sense. More generally for any capture or
55 - incapable of capturing fields or frames at the nominal rate of the
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Dvidioc-g-frequency.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_FREQUENCY - VIDIOC_S_FREQUENCY - Get or set tuner or modulator radio frequency
38 To get the current tuner or modulator radio frequency applications set
40 :c:type:`v4l2_frequency` to the respective tuner or
46 To change the current tuner or modulator radio frequency applications
65 - The tuner or modulator index number. This is the same value as in
67 the struct :c:type:`v4l2_tuner` ``index`` field, or
81 - Tuning frequency in units of 62.5 kHz, or if the struct
82 :c:type:`v4l2_tuner` or struct
99 The ``tuner`` index is out of bounds or the value in the ``type``
/Documentation/userspace-api/media/
Dfdl-appendix.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
15 The purpose of this License is to make a manual, textbook, or other
17 effective freedom to copy and redistribute it, with or without modifying
18 it, either commercially or noncommercially. Secondarily, this License
32 used for any textual work, regardless of subject matter or whether it is
34 works whose purpose is instruction or reference.
45 This License applies to any manual or other work that contains a notice
48 or work. Any member of the public is a licensee, and is addressed as
55 Document or a portion of it, either copied verbatim, or with
56 modifications and/or translated into another language.
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Dgen-errors.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
36 change something that would affect the stream, or would require
48 - One or more of the ioctl parameters are invalid or out of the
54 - Device not found or was removed.
63 the required functionality is not available, or the file
75 permission, or some special capabilities is needed (e. g. root)
80 a hardware device. This could indicate broken or flaky hardware.
92 applications should abort on unexpected errors, or otherwise
/Documentation/mm/
Dnuma.rst11 comprises multiple components or assemblies each of which may contain 0
12 or more CPUs, local memory, and/or IO buses. For brevity and to
20 connected together with some sort of system interconnect--e.g., a crossbar or
26 Coherent NUMA or ccNUMA systems. With ccNUMA systems, all memory is visible
28 is handled in hardware by the processor caches and/or the system interconnect.
31 away the cell containing the CPU or IO bus making the memory access is from the
41 [cache misses] to be to "local" memory--memory on the same cell, if any--or
49 architectures. As with physical cells, software nodes may contain 0 or more
50 CPUs, memory and/or IO buses. And, again, memory accesses to memory on
63 the existing nodes--or the system memory for non-NUMA platforms--into multiple
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/Documentation/core-api/
Dprintk-formats.rst18 signed char %d or %hhx
19 unsigned char %u or %x
20 char %u or %x
21 short int %d or %hx
22 unsigned short int %u or %x
23 int %d or %x
24 unsigned int %u or %x
25 long %ld or %lx
26 unsigned long %lu or %lx
27 long long %lld or %llx
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/Documentation/bpf/
Dmap_queue_stack.rst38 An element ``value`` can be added to a queue or stack using the
40 ``BPF_ANY`` or ``BPF_EXIST``. If ``flags`` is set to ``BPF_EXIST`` then,
41 when the queue or stack is full, the oldest element will be removed to
42 make room for ``value`` to be added. Returns ``0`` on success, or
52 This helper fetches an element ``value`` from a queue or stack without
53 removing it. Returns ``0`` on success, or negative error in case of
63 This helper removes an element into ``value`` from a queue or
64 stack. Returns ``0`` on success, or negative error in case of failure.
77 A userspace program can push ``value`` onto a queue or stack using libbpf's
79 ``NULL`` and ``flags`` must be set to ``BPF_ANY`` or ``BPF_EXIST``, with the
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/Documentation/hwmon/
Dpmbus.rst194 inX_input Measured voltage. From READ_VIN or READ_VOUT register.
196 From VIN_UV_WARN_LIMIT or VOUT_UV_WARN_LIMIT register.
198 From VIN_OV_WARN_LIMIT or VOUT_OV_WARN_LIMIT register.
200 From VIN_UV_FAULT_LIMIT or VOUT_UV_FAULT_LIMIT register.
202 From VIN_OV_FAULT_LIMIT or VOUT_OV_FAULT_LIMIT register.
209 inX_label "vin", "vcap", or "voutY"
211 From MFR_VIN_MIN or MFR_VOUT_MIN register.
213 From MFR_VIN_MAX or MFR_VOUT_MAX register.
215 currX_input Measured current. From READ_IIN or READ_IOUT register.
217 From IIN_OC_WARN_LIMIT or IOUT_OC_WARN_LIMIT register.
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/Documentation/fb/
Dsisfb.rst40 (or GRUB's) documentation for more information. If sisfb is a kernel module,
41 parameters are given with the modprobe (or insmod) command.
54 the parameter format is video=sisfb:mode:none or video=sisfb:mode:1024x768x16
55 (or whatever mode you want to use, alternatively using any other format
56 described above or the vesa keyword instead of mode). If compiled as a module,
57 the parameter format reads mode=none or mode=1024x768x16 (or whatever mode you
77 - XxYxDepth or
78 - XxY-Depth or
79 - XxY-Depth@Rate or
81 - or simply use the VESA mode number in hexadecimal or decimal.
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/Documentation/devicetree/bindings/media/
Dst,stm32-dma2d.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
15 - Filling a part or the whole of a destination image with a specific color.
16 - Copying a part or the whole of a source image into a part or the whole of
18 - Copying a part or the whole of a source image into a part or the whole of
20 - Blending a part and/or two complete source images with different pixel
21 format and copy the result into a part or the whole of a destination image
/Documentation/arch/s390/
Dqeth.rst12 a primary or a secondary Bridge Port. For more information, see
15 When run on an OSA or HiperSockets Bridge Capable Port hardware, and the state
33 or a VLAN is registered or unregistered on the network served by the device.
38 notifications are started afresh, a new host or VLAN is registered or
39 deregistered on the Bridge Port HiperSockets channel, or address
48 or deregistered from the HiperSockets channel. Not reported if the
49 event reports the creation or destruction of a VLAN.
/Documentation/driver-api/pm/
Dnotifiers.rst13 There are some operations that subsystems or drivers may want to carry out
14 before hibernation/suspend or after restore/resume, but they require the system
16 ``->resume()`` or even ``->prepare()`` and ``->complete()`` callbacks are not
21 from their ``->resume()`` or ``->complete()`` callback routines (user land
26 Subsystems or drivers having such needs can register suspend notifiers that
36 The system memory state has been restored from a hibernation image or an
53 The system has just resumed or an error occurred during suspend. Device
61 Moreover, if one of the notifiers fails for the ``PM_HIBERNATION_PREPARE`` or
63 event will be called for ``PM_POST_HIBERNATION`` or ``PM_POST_SUSPEND``,
70 To register and/or unregister a suspend notifier use
/Documentation/devicetree/bindings/display/bridge/
Dlontium,lt9211.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
14 or Single DPI to Single/Dual-Link DSI/LVDS or Single DPI.
41 Primary MIPI DSI port-1 for MIPI input or
42 LVDS port-1 for LVDS input or DPI input.
47 Additional MIPI port-2 for MIPI input or LVDS port-2
54 Primary MIPI DSI port-1 for MIPI output or
55 LVDS port-1 for LVDS output or DPI output.
60 Additional MIPI port-2 for MIPI output or LVDS port-2
/Documentation/devicetree/bindings/dma/
Dstericsson,dma40.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
42 20: SLIMbus or HSI channel 0
43 21: SLIMbus or HSI channel 1
44 22: SLIMbus or HSI channel 2
45 23: SLIMbus or HSI channel 3
53 31: MSP port 0 or SLIMbus channel 0
68 46: SLIMbus channel 8 or Multimedia DSP SXA6
69 47: SLIMbus channel 9 or Multimedia DSP SXA7
71 49: Crypto Accelerator 1 TX or Hash Accelerator 1 TX
74 52: SLIMbus or HSI channel 4
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