| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-bus-iio-dac | 3 Contact: linux-iio@vger.kernel.org
6 is useful when one wants to change the DAC output codes. For
9 - disable toggle operation;
10 - change out_currentY_rawN, where N is the integer value of the symbol;
11 - enable toggle operation.
15 Contact: linux-iio@vger.kernel.org
18 specific to toggle enabled channels and refers to the DAC output
24 Contact: linux-iio@vger.kernel.org
26 Performs a SW switch to a predefined output symbol. This attribute
27 is specific to toggle enabled channels and allows switching between
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| /linux/include/uapi/sound/ |
| H A D | firewire.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
30 unsigned int notification; /* DICE-specific bits */
33 #define SND_EFW_TRANSACTION_USER_SEQNUM_MAX ((__u32)((__u16)~0) - 1)
51 __u32 message; /* Digi00x-specific message */
56 __u32 message; /* MOTU-specific bits. */
77 * struct snd_firewire_event_ff400_message - the container for message from Fireface 400 when
139 * Returns -EBUSY if the driver is already streaming.
150 * - 828mk2
151 * - 896hd
152 * - Traveler
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| /linux/tools/perf/Documentation/ |
| H A D | perf-daemon.txt | 1 perf-daemon(1)
6 ----
7 perf-daemon - Run record sessions on background
11 --------
22 -----------
32 …916507 916508 ... \_ perf record --control=fifo:control,ack -m 10M -e cycles --overwrite --switc…
33 …916507 916509 ... \_ perf record --control=fifo:control,ack -m 20M -e sched:* --overwrite --swit…
38 to produce data periodically, like with --switch-output configuration
41 Each session is started with control setup (with perf record --control
49 -------
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| /linux/Documentation/ABI/stable/ |
| H A D | sysfs-class-tpm | 4 Contact: linux-integrity@vger.kernel.org
5 Description: The device/ directory under a specific TPM instance exposes
12 Contact: linux-integrity@vger.kernel.org
24 Contact: linux-integrity@vger.kernel.org
27 TPM vendor specific cancel operation.
32 Contact: linux-integrity@vger.kernel.org
35 Example output::
44 is manufacturer specific.
49 Contact: linux-integrity@vger.kernel.org
50 Description: The "durations" property shows the 3 vendor-specific values
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| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | ext-ctrls-rf-tuner.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _rf-tuner-controls:
16 baseband frequency (BB). Tuners that could do baseband output are often
17 called Zero-IF tuners. Older tuners were typically simple PLL tuners
29 .. _rf-tuner-control-id:
48 range and step are driver-specific.
65 range and step are driver-specific.
73 driver-specific.
77 located inside mixer block, where RF signal is down-converted by the
79 The range and step are driver-specific.
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| H A D | dev-stateless-decoder.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 Memory-to-memory Stateless Video Decoder Interface
19 This section describes how user-space ("the client") is expected to communicate
25 Stateless decoders make use of the :ref:`media-request-api`. A stateless
27 ``OUTPUT`` queue when :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
34 ``OUTPUT`` queue.
40 calls :c:func:`VIDIOC_ENUM_FMT` on the ``OUTPUT`` queue.
42 * The driver must always return the full set of supported ``OUTPUT`` formats,
46 codec-specific capability controls (such as H.264 profiles) to the set
53 active on the ``OUTPUT`` queue.
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| H A D | pixfmt-v4l2.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
5 Single-planar format structure
14 .. flat-table:: struct v4l2_pix_format
15 :header-rows: 0
16 :stub-columns: 0
19 * - __u32
20 - ``width``
21 - Image width in pixels.
22 * - __u32
23 - ``height``
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| H A D | dev-encoder.rst | 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
7 Memory-to-Memory Stateful Video Encoder Interface
13 further post-processing by the client.
35 5. Single-planar API (see :ref:`planar-apis`) and applicable structures may be
36 used interchangeably with multi-planar API, unless specified otherwise,
42 7. Given an ``OUTPUT`` buffer A, then A' represents a buffer on the ``CAPTURE``
48 Refer to :ref:`decoder-glossary`.
53 .. kernel-render:: DOT
66 qi -> Initialization [ label = "open()" ];
68 Initialization -> Encoding [ label = "Both queues streaming" ];
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| H A D | vidioc-g-dv-timings.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 …C_G_DV_TIMINGS - VIDIOC_S_DV_TIMINGS - VIDIOC_SUBDEV_G_DV_TIMINGS - VIDIOC_SUBDEV_S_DV_TIMINGS - G…
46 To set DV timings for the input or output, applications use the
56 registered in read-only mode is not allowed. An error is returned and the errno
57 variable is set to ``-EPERM``.
59 The ``linux/v4l2-dv-timings.h`` header can be used to get the timings of
61 the current input or output does not support DV timings (e.g. if
68 On success 0 is returned, on error -1 and the ``errno`` variable is set
70 :ref:`Generic Error Codes <gen-errors>` chapter.
77 Digital video timings are not supported for this input or output.
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| /linux/Documentation/devicetree/bindings/display/hisilicon/ |
| H A D | dw-dsi.txt | 1 Device-Tree bindings for DesignWare DSI Host Controller v1.20a driver
7 - compatible: value should be "hisilicon,hi6220-dsi".
8 - reg: physical base address and length of dsi controller's registers.
9 - clocks: contains APB clock phandle + clock-specifier pair.
10 - clock-names: should be "pclk".
11 - ports: contains DSI controller input and output sub port.
12 The input port connects to ADE output port with the reg value "0".
13 The output port with the reg value "1", it could connect to panel or
17 A example of HiKey board hi6220 SoC and board specific DT entry:
20 SoC specific:
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| /linux/Documentation/devicetree/bindings/input/ |
| H A D | brcm,bcm-keypad.txt | 3 Broadcom Keypad controller is used to interface a SoC with a matrix-type
6 The keypad controller can sense a key-press and key-release and report the
9 This binding is based on the matrix-keymap binding with the following
12 keypad,num-rows and keypad,num-columns are required.
14 Required SoC Specific Properties:
15 - compatible: should be "brcm,bcm-keypad"
17 - reg: physical base address of the controller and length of memory mapped
20 - interrupts: The interrupt number to the cpu.
22 Board Specific Properties:
23 - keypad,num-rows: Number of row lines connected to the keypad
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| /linux/lib/842/ |
| H A D | 842.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
11 * where there are between 0 and 4 template args, depending on the specific
12 * template operation. For normal operations, each arg is either a specific
13 * number of data bytes to add to the output buffer, or an index pointing
14 * to a previously-written number of data bytes to copy to the output buffer.
16 * The template code is a 5-bit value. This code indicates what to do with
22 * bytes being written to the output buffer. Each template (i.e. all actions
23 * in the table row) will add up to 8 bytes being written to the output buffer.
29 * buffer should be copied directly to the output buffer.
33 * 4, or 8 byte value already in the output buffer, that should be copied to
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| /linux/Documentation/leds/ |
| H A D | leds-lp55xx.rst | 8 -----------
13 Create LED class devices for multiple output channels
14 Device attributes for user-space interface
28 control multi output LED channels such as led current, channel index.
33 LP5523/55231 has 9 output channels::
47 To support device specific configurations, special structure
50 - Maximum number of channels
51 - Reset command, chip enable command
52 - Chip specific initialization
53 - Brightness control register access
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| /linux/Documentation/sound/cards/ |
| H A D | maya44.rst | 8 keep here as reference -- tiwai
22 …gramming information, so I (Rainer Zimmermann) had to find out some card-specific information by e…
24 This is the first testing version of the Maya44 driver released to the alsa-devel mailing list (Feb…
29 - playback and capture at all sampling rates
30 - input/output level
31 - crossmixing
32 - line/mic switch
33 - phantom power switch
34 - analogue monitor a.k.a bypass
39 - Channel 3+4 analogue - S/PDIF input switching
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| /linux/include/crypto/ |
| H A D | kpp.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Key-agreement Protocol Primitives (KPP)
24 * @dst_len: Size of the output buffer. It needs to be at least
41 * struct crypto_kpp - user-instantiated object which encapsulate
55 * struct kpp_alg - generic key-agreement protocol primitives
57 * @set_secret: Function invokes the protocol specific function to
61 * counterpart. In case of error, where output is not big
62 * enough req->dst_len will be updated to the size
66 * In case of error, where output is not big enough,
67 * req->dst_len will be updated to the size required
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| /linux/tools/docs/ |
| H A D | get_feat.py | 4 # SPDX-License-Identifier: GPL-2.0
36 proc = subprocess.run(["uname", "-m"], check=True,
63 - neither feature nor arch is passed: generates a full matrix;
64 - arch provided: generates a table of supported tables for the
66 - only feature provided: generates a table with feature details,
83 Instead of using a --arch parameter, get feature for the current
94 parseable by other scripts. The output format is not ReST.
106 """Add a --arch parsing argument"""
108 parser.add_argument("--arch",
109 help="Output features for an specific"
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| /linux/Documentation/gpu/ |
| H A D | komeda-kms.rst | 1 .. SPDX-License-Identifier: GPL-2.0
17 specific capabilities that can give the flowed pipeline pixel data a
23 -----
30 ------
33 The usage of scaler is very flexible and can be connected to layer output
35 frame and then feed the output data into wb_layer which will then write it
39 -------------------
41 frame. its output frame can be fed into post image processor for showing it on
47 --------------------------
52 -----------------------------
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| /linux/drivers/hv/ |
| H A D | hv_common.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * Hyper-V. This file is specifically for code that must be
6 * built-in to the kernel image when CONFIG_HYPERV is set
8 * specific code under arch/.
29 #include <linux/dma-map-ops.h>
42 * Hyper-V specific globals so they are shared across all architectures and are
72 * Per-cpu array holding the tail pointer for the SynIC event ring buffer
82 * Hyper-V specific initialization and shutdown code that is
84 * specific initialization functions.
111 * Boolean to control whether to report panic messages over Hyper-V.
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| /linux/Documentation/livepatch/ |
| H A D | module-elf-format.rst | 16 Formerly, livepatch required separate architecture-specific code to write
17 relocations. However, arch-specific code to write relocations already
19 code. So, instead of duplicating code and re-implementing what the module
21 loader to perform the all the arch-specific relocation work. Specifically,
26 of arch-specific code required to port livepatch to a particular
34 selected from OS-specific ranges according to the definitions from glibc.
37 -----------------------------------------------------
39 reference non-exported global symbols and non-included local symbols.
40 Relocations referencing these types of symbols cannot be left in as-is
46 module ELF output. Using these dynrela sections, livepatch could resolve
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| /linux/arch/arm/mach-pxa/ |
| H A D | mfp-pxa2xx.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
8 * the following MFP_xxx bit definitions in mfp.h are re-used for pxa2xx:
19 * bit 23 - Input/Output (PXA2xx specific)
20 * bit 24 - Wakeup Enable(PXA2xx specific)
21 * bit 25 - Keep Output (PXA2xx specific)
33 * retain their last output level (low or high).
49 /* NOTE: pins configured as output _must_ provide a low power state,
|
| /linux/Documentation/userspace-api/media/mediactl/ |
| H A D | request-api.rst | 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
4 .. _media-request-api:
12 the same pipeline to reconfigure and collaborate closely on a per-frame basis.
14 to specific frames (aka 'per-frame controls') in order to be used efficiently.
16 While the initial use-case was V4L2, it can be extended to other subsystems
20 it is, it is terribly inefficient: user-space would have to flush all activity
26 The Request API allows a specific configuration of the pipeline (media
28 specific buffers. This allows user-space to schedule several tasks ("requests")
34 -------------
37 subsystem-specific APIs to support request usage. At the Media Controller
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| /linux/arch/arm/boot/dts/allwinner/ |
| H A D | sun8i-a23-a33.dtsi | 2 * Copyright 2014 Chen-Yu Tsai
4 * Chen-Yu Tsai <wens@csie.org>
6 * This file is dual-licensed: you can use it either under the terms
45 #include <dt-bindings/interrupt-controller/arm-gic.h>
47 #include <dt-bindings/clock/sun6i-rtc.h>
48 #include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
49 #include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
52 interrupt-parent = <&gic>;
53 #address-cells = <1>;
54 #size-cells = <1>;
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| /linux/drivers/gpu/drm/vkms/ |
| H A D | vkms_drv.h | 1 /* SPDX-License-Identifier: GPL-2.0+ */
31 * struct vkms_frame_info - Structure to store the state of a frame
34 * @src: source rectangle of this frame in the source framebuffer, stored in 16.16 fixed-point form
53 * struct pixel_argb_u16 - Internal representation of a pixel color.
66 * Caution: the byte ordering of this structure is machine-dependent,
79 * typedef pixel_write_t - These functions are used to read a pixel from a
80 * &struct pixel_argb_u16, convert it in a specific format and write it in the @out_pixel
95 * enum pixel_read_direction - Enum used internally by VKMS to represent a reading direction in a
108 * typedef pixel_read_line_t - These functions are used to read a pixel line in the source frame,
113 * is non-negative and smaller than @plane->frame_info->fb->width.
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| /linux/Documentation/virt/coco/ |
| H A D | tdx-guest.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 The TDX guest driver exposes IOCTL interfaces via the /dev/tdx-guest misc
11 device to allow userspace to get certain TDX guest-specific details.
20 :Output: Details about output data and return value (with details about
24 -----------------------
27 :Output: Upon successful execution, TDREPORT data is copied to
28 tdx_report_req.tdreport and return 0. Return -EINVAL for invalid
29 operands, -EIO on TDCALL failure or standard error number on other
37 subtype-specific TDREPORT request. Although the subtype option is mentioned in
46 ---------
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| /linux/Documentation/doc-guide/ |
| H A D | sphinx.rst | 10 documentation is placed in ``Documentation/output``.
12 .. _Sphinx: http://www.sphinx-doc.org/
16 documentation comments, or kernel-doc comments, from source files. Usually these
18 kernel-doc comments have some special structure and formatting, but beyond that
34 :ref:`sphinx-pre-install` for further details.
42 Sphinx inside a virtual environment, using ``virtualenv-3``
50 (sphinx_latest) $ pip install -r Documentation/sphinx/requirements.txt
57 Image output
58 ------------
66 output.
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|