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/Documentation/sound/designs/
Dchannel-mapping-api.rst2 ALSA PCM channel-mapping API
18 ``{ front left, front right, rear left, rear right }.``
38 the kernel/user-space ABI perspective. It uses only the existing
57 ---
61 ``type data-bytes ch0 ch1 ch2...``
71 type is where pair-wise channels are swappable. For example, when you
88 /* this follows the alsa-lib mixer channel value + 3 */
89 SNDRV_CHMAP_FL, /* front left */
91 SNDRV_CHMAP_RL, /* rear left */
95 SNDRV_CHMAP_SL, /* side left */
[all …]
/Documentation/userspace-api/media/v4l/
Dselection-api-configuration.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
20 :ref:`constraint flags <v4l2-selection-flags>`.
26 See figure :ref:`sel-targets-capture` for examples of the selection
30 The range of coordinates of the top left corner, width and height of
32 target. It is recommended for the driver developers to put the top/left
36 The top left corner, width and height of the source rectangle, that is
51 coordinates are expressed in pixels. The rectangle's top/left corner
63 :ref:`constraint flags <v4l2-selection-flags>`.
91 All coordinates are expressed in pixels. The top/left corner is always
95 The top left corner, width and height of the source rectangle, that is
[all …]
Dext-ctrls-detect.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _detect-controls:
13 .. _detect-control-id:
28 .. flat-table::
29 :header-rows: 0
30 :stub-columns: 0
32 * - ``V4L2_DETECT_MD_MODE_DISABLED``
33 - Disable motion detection.
34 * - ``V4L2_DETECT_MD_MODE_GLOBAL``
35 - Use a single motion detection threshold.
[all …]
Dvidioc-cropcap.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_CROPCAP - Information about the video cropping and scaling abilities
43 support cropping and/or scaling and/or have non-square pixels, and for
50 .. flat-table:: struct v4l2_cropcap
51 :header-rows: 0
52 :stub-columns: 0
55 * - __u32
56 - ``type``
57 - Type of the data stream, set by the application. Only these types
61 * - struct :ref:`v4l2_rect <v4l2-rect-crop>`
[all …]
Ddev-overlay.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
11 Video overlay devices have the ability to genlock (TV-)video into the
12 (VGA-)video signal of a graphics card, or to store captured images
62 :ref:`streaming parameter <streaming-par>` ioctls as needed. The
93 1. Chroma-keying displays the overlaid image only where pixels in the
162 ------------------
165 Size and position of the window relative to the top, left corner of
181 When chroma-keying has been negotiated with
187 :ref:`V4L2_PIX_FMT_BGR24 <V4L2-PIX-FMT-BGR32>` the value should
192 When chroma-keying has *not* been negotiated and
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Dpixfmt-intro.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 V4L2 drivers are not limited to these formats, however. Driver-specific
23 specification would not be complete without well-defined standard
27 are always arranged in memory from left to right, and from top to
30 immediately to its right, and so on until the end of the top row of
34 leftmost pixel of the second row from the top, and so on. The last row
40 :ref:`four character (FourCC) codes <v4l2-fourcc>` which are also
46 and are referred to as "multi-planar formats". For example, a
47 :ref:`YUV422 <V4L2-PIX-FMT-YUV422M>` frame is normally stored in one
50 in the 2-planar version or with each component in its own buffer in the
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Dv4l2-selection-targets.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _v4l2-selection-targets:
13 .. _v4l2-selection-targets-table:
23 .. flat-table:: Selection target definitions
24 :header-rows: 1
25 :stub-columns: 0
27 * - Target name
28 - id
29 - Definition
30 - Valid for V4L2
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Dmetafmt-d4xx.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _v4l2-meta-fmt-d4xx:
15 Intel D4xx (D435, D455 and others) cameras include per-frame metadata in their UVC
37 .. flat-table:: D4xx metadata
39 :header-rows: 1
40 :stub-columns: 0
42 * - **Field**
43 - **Description**
44 * - :cspan:`1` *Depth Control*
45 * - __u32 ID
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Dselection-api-examples.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
14 .. code-block:: c
22 exit(-1);
26 exit(-1);
34 .. code-block:: c
44 exit(-1);
48 r.left = sel.r.width / 4;
49 r.top = sel.r.height / 4;
55 exit(-1);
63 .. code-block:: c
[all …]
Dcrop.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Image Cropping, Insertion and Scaling -- the CROP API
12 <selection-api>`. The new API should be preferred in most cases,
15 equivalent in the SELECTION API. See :ref:`selection-vs-crop` for a
62 .. _crop-scale:
64 .. kernel-figure:: crop.svg
74 For capture devices the coordinates of the top left corner, width and
81 :ref:`vbi-hsync`). Vertically ITU-R line numbers of the first field
82 (see ITU R-525 line numbering for :ref:`525 lines <vbi-525>` and for
83 :ref:`625 lines <vbi-625>`), multiplied by two if the driver
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/Documentation/driver-api/media/drivers/
Dsh_mobile_ceu_camera.rst1 .. SPDX-License-Identifier: GPL-2.0
9 -----------
12 host scales: -"- host driver
17 ---------------------------------
19 .. code-block:: none
21 -1--
23 -2-- -\
24 | --\
25 | --\
26 +-5-- . -- -3-- -\
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/Documentation/sphinx-static/
Dcustom.css1 /* SPDX-License-Identifier: GPL-2.0 */
7 div.body h1 { font-size: 180%; }
8 div.body h2 { font-size: 150%; }
9 div.body h3 { font-size: 130%; }
10 div.body h4 { font-size: 110%; }
13 div.toctree-wrapper p.caption[role=heading] { font-size: 150%; }
18 div.sphinxsidebar { font-size: inherit;
19 max-height: 100%;
20 overflow-y: auto; }
30 margin-bottom: 20px;
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Dtheme_overrides.css1 /* -*- coding: utf-8; mode: css -*-
11 font-family: serif;
12 font-size: 100%;
15 h1, h2, .rst-content .toctree-wrapper p.caption, h3, h4, h5, h6, legend {
16 font-family: sans-serif;
20 font-family: monospace;
21 font-size: 100%;
24 .wy-menu-vertical {
25 font-family: sans-serif;
29 font-style: normal;
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/Documentation/userspace-api/media/drivers/
Dcx2341x-uapi.rst1 .. SPDX-License-Identifier: GPL-2.0
6 Non-compressed file format
7 --------------------------
18 The Y plane is divided into blocks of 16x16 pixels from left to right
19 and from top to bottom. Each block is transmitted in turn, line-by-line.
21 So the first 16 bytes are the first line of the top-left block, the
22 second 16 bytes are the second line of the top-left block, etc. After
26 The UV plane is divided into blocks of 16x8 UV values going from left
27 to right, top to bottom. Each block is transmitted in turn, line-by-line.
29 So the first 16 bytes are the first line of the top-left block and
[all …]
/Documentation/leds/
Dwell-known-leds.txt1 -*- org -*-
17 Notice there's a list of functions in include/dt-bindings/leds/common.h .
24 player. For example, a game controller with 4 LEDs, may be programmed with "x---"
25 to indicate player 1, "-x--" to indicate player 2 etcetera where "x" means on.
31 Good: "input*:*:player-{1,2,3,4,5}
38 Legacy: "shift-key-light" (Motorola Droid 4, capslock)
47 Legacy: "button-backlight" (Motorola Droid 4)
62 Legacy: "status-led:{red,green,blue}" (Motorola Droid 4)
65 Phones usually have multi-color status LED.
69 Good: "platform:*:charging" (allwinner sun50i, leds-cht-wcove)
[all …]
/Documentation/input/
Dgamepad.rst1 ---------------------------
3 ---------------------------
11 having user-space deal with different button-mappings for each gamepad, this
25 | <===DP===> |SE| |ST| (W) -|- (E) | |
35 D-Pad Left Right Action Pad
43 - Action-Pad
44 4 buttons in diamonds-shape (on the right side). The buttons are
47 - D-Pad (Direction-pad)
48 4 buttons (on the left side) that point up, down, left and right.
49 - Menu-Pad
[all …]
/Documentation/devicetree/bindings/iio/
Dmount-matrix.txt2 * is the definition of +/- values practical or counterintuitive?
13 that produce three-dimensional data in relation to the world where it is
31 For a screen you probably want (x) coordinates to go from negative on the left
32 to positive on the right, (y) from negative on the bottom to positive on top
37 reference. This means that the sensor may be flipped upside-down, left-right,
47 Device-to-world examples for some three-dimensional sensor types:
49 - Accelerometers have their world frame of reference toward the center of
57 as the gravity vector is projected 1:1 onto the sensors (z)-axis.
67 +--------+ +--------+
69 +--------+ +--------+
[all …]
/Documentation/admin-guide/
Dlcd-panel-cgram.rst8 number, and up to 8 couples of hex digits terminated by a semi-colon
9 (';'). Each couple of digits represents a line, with 1-bits for each
11 top of the character to the bottom. On a 5x7 matrix, only the 5 lower
19 printf "\e[LG3040E1F001F0E0400;" => 3 = [up-down]
20 printf "\e[LG40002060E1E0E0602;" => 4 = [left]
/Documentation/input/devices/
Delantech.rst4 Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
25 5.2.1 Parity checking and packet re-synchronization
81 On top of that, some register settings have effect only when the touchpad is
114 non-zero value will turn it ON. For hardware version 1 the default is ON.
145 4 bytes version: (after the arrow is the name given in the Dell-provided driver)
173 ---------
179 echo -n 0x16 > reg_10
193 B: 1 = swap left and right button
236 -----------------------------------------
243 L, R, M = 1 when Left, Right, Middle mouse button pressed
[all …]
Datarikbd.rst12 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
67 ---------------------------
85 ; and x is the left button state
92 +127...-128 range, the motion is broken into multiple packets.
97 ---------------------------
104 ---------------------
[all …]
/Documentation/devicetree/bindings/input/
Dgoogle,cros-ec-keyb.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $id: http://devicetree.org/schemas/input/google,cros-ec-keyb.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Simon Glass <sjg@chromium.org>
12 - Benson Leung <bleung@chromium.org>
24 - description: ChromeOS EC with only buttons/switches
25 const: google,cros-ec-keyb-switches
26 - description: ChromeOS EC with keyboard and possibly buttons/switches
27 const: google,cros-ec-keyb
[all …]
/Documentation/devicetree/bindings/sound/
Dnxp,tfa989x.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Stephan Gerhold <stephan@gerhold.net>
13 - $ref: dai-common.yaml#
18 - nxp,tfa9890
19 - nxp,tfa9895
20 - nxp,tfa9897
25 '#sound-dai-cells':
28 rcv-gpios:
[all …]
/Documentation/devicetree/bindings/interrupt-controller/
Dbrcm,bcm7038-l1-intc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/brcm,bcm7038-l1-intc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM7038-style Level 1 interrupt controller
11 directly to one of the HW INT lines on each CPU. Every BCM7xxx set-top chip
16 - 64, 96, 128, or 160 incoming level IRQ lines
18 - Most onchip peripherals are wired directly to an L1 input
20 - A separate instance of the register set for each CPU, allowing individual
23 - Atomic mask/unmask operations
[all …]
/Documentation/fb/
Dpxafb.rst10 modprobe pxafb options=vmem:2M,mode:640x480-8,passive
14 video=pxafb:vmem:2M,mode:640x480-8,passive
21 mode:XRESxYRES[-BPP]
35 left:LEFT == LCCR1_BLW + 1
87 PXA27x and later processors support overlay1 and overlay2 on-top of the
88 base framebuffer (although under-neath the base is also possible). They
89 support palette and no-palette RGB formats, as well as YUV formats (only
96 1. overlay can start at a 32-bit word aligned position within the base
98 is encoded into var->nonstd (no, var->xoffset and var->yoffset are
104 var->xres_virtual * var->yres_virtual * bpp
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/Documentation/ABI/testing/
Dsysfs-firmware-acpi55 image: The image bitmap. Currently a 32-bit BMP.
61 xoffset: The number of pixels between the left of the screen
62 and the left edge of the image.
63 yoffset: The number of pixels between the top of the screen
64 and the top edge of the image.
93 cause -EINVAL to be returned.

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