| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | pixfmt-v4l2.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 Single-planar format structure
13 .. flat-table:: struct v4l2_pix_format
14 :header-rows: 0
15 :stub-columns: 0
18 * - __u32
19 - ``width``
20 - Image width in pixels.
21 * - __u32
22 - ``height``
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| H A D | vidioc-subdev-enum-mbus-code.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_SUBDEV_ENUM_MBUS_CODE - Enumerate media bus formats
34 This call is used by the application to access the enumeration
42 Therefore, to enumerate media bus formats available at a given sub-device pad,
48 A successful call will return with the ``code`` field filled in
58 other pads of the sub-device, as well as on the current active links.
66 .. flat-table:: struct v4l2_subdev_mbus_code_enum
67 :header-rows: 0
68 :stub-columns: 0
71 * - __u32
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| H A D | userp.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
11 ``V4L2_CAP_STREAMING`` flag in the ``capabilities`` field of struct
19 methods. Buffers (planes) are allocated by the application itself, and
20 can reside for example in virtual or shared memory. Only pointers to
21 data are exchanged, these pointers and meta-information are passed in
22 struct :c:type:`v4l2_buffer` (or in struct
23 :c:type:`v4l2_plane` in the multi-planar API case). The
33 .. code-block:: c
41 if (ioctl (fd, VIDIOC_REQBUFS, &reqbuf) == -1) {
55 area of memory. This happens transparently to the application in the
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| H A D | vidioc-enum-frameintervals.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_ENUM_FRAMEINTERVALS - Enumerate frame intervals
46 - **Discrete:** The function returns success if the given index value
47 (zero-based) is valid. The application should increase the index by
53 - **Step-wise:** The function returns success if the given index value
59 - **Continuous:** This is a special case of the step-wise type above.
66 When the application calls the function with index zero, it must check
74 The order in which the frame intervals are returned has no
75 special meaning. In particular does it not say anything about potential
79 without any interaction from the application itself. This means that the
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| /linux/tools/testing/selftests/hid/tests/ |
| H A D | base_gamepad.py | 1 # SPDX-License-Identifier: GPL-2.0
59 def __init__(self, rdesc, application="Game Pad", name=None, input_info=None): argument
61 super().__init__(name, application, input_info=input_info, rdesc=rdesc)
70 for r in self.parsed_rdesc.input_reports.values():
71 if r.application_name == self.application:
72 self.fields.extend([f.usage_name for f in r])
88 application="Game Pad", argument
98 (expressed in 1/8 of circle, 0 being North, 2 East)
103 :param application: the application used to report the values
106 for i, b in buttons.items():
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| H A D | base_device.py | 2 # SPDX-License-Identifier: GPL-2.0
3 # -*- coding: utf-8 -*-
13 # This program is distributed in the hope that it will be useful,
56 def int_value(self) -> int:
60 def int_value(self, v: int) -> None:
64 def str_value(self) -> str:
68 def str_value(self, v: str) -> None:
78 def brightness(self) -> int:
82 def brightness(self, value: int) -> None:
95 def capacity(self) -> int:
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| /linux/drivers/usb/host/ |
| H A D | octeon-hcd.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
6 * License. See the file "COPYING" in the main directory of this archive
11 * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
14 * Redistribution and use in source and binary forms, with or without
21 * * Redistributions in binary form must reproduce the above
23 * disclaimer in the documentation and/or other materials provided
33 * regulations, and may be subject to export or import regulations in other
104 * This register can be used to configure the core after power-on or a change in
105 * mode of operation. This register mainly contains AHB system-related
107 * core. In general, software need not know about this interface except to
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| /linux/drivers/iio/accel/ |
| H A D | mma9551_core.c | 1 // SPDX-License-Identifier: GPL-2.0-only
23 /* Error-Status codes returned in mailbox read command */
33 /* GPIO Application */
37 /* Sleep/Wake application */
43 /* AFE application */
48 /* Reset/Suspend/Clear application */
50 #define MMA9551_RSC_OFFSET(mask) (3 - (ffs(mask) - 1) / 8)
51 #define MMA9551_RSC_VAL(mask) (mask >> (((ffs(mask) - 1) / 8) * 8))
55 * - control registers: MB0-3
56 * - data registers: MB4-31
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| /linux/net/netlabel/ |
| H A D | netlabel_unlabeled.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
9 * Author: Paul Moore <paul@paul-moore.com>
13 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
25 * This message is sent from an application to add a new static label for
44 * This message is sent from an application to remove an existing static
62 * This message can be sent either from an application or by the kernel in
63 * response to an application generated STATICLIST message. When sent by an
64 * application there is no payload and the NLM_F_DUMP flag should be set.
83 * This message is sent from an application to set the default static
101 * This message is sent from an application to remove the existing default
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| H A D | netlabel_mgmt.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
9 * Author: Paul Moore <paul@paul-moore.com>
13 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
26 * Sent by an application to add a domain mapping to the NetLabel system.
53 * Sent by an application to remove a domain mapping from the NetLabel
61 * This message can be sent either from an application or by the kernel in
62 * response to an application generated LISTALL message. When sent by an
63 * application there is no payload and the NLM_F_DUMP flag should be set.
90 * Sent by an application to set the default domain mapping for the NetLabel
107 * Sent by an application to remove the default domain mapping from the
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| /linux/Documentation/arch/arm/ |
| H A D | marvell.rst | 6 supported in mainline by the Linux kernel. As the Marvell families of
8 for a particular SoC is available in the Linux kernel. This document
9 tries to help in understanding where those SoCs are supported, and to
13 ------------
16 - 88F5082
17 - 88F5181 a.k.a Orion-1
18 - 88F5181L a.k.a Orion-VoIP
19 - 88F5182 a.k.a Orion-NAS
21 …- Datasheet: https://web.archive.org/web/20210124231420/http://csclub.uwaterloo.ca/~board/ts7800/M…
22 …- Programmer's User Guide: https://web.archive.org/web/20210124231536/http://csclub.uwaterloo.ca/~…
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| /linux/Documentation/networking/ |
| H A D | kcm.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 interface over TCP for generic application protocols. With KCM an application
9 can efficiently send and receive application protocol messages over TCP using
12 KCM implements an NxM multiplexor in the kernel as diagrammed below::
14 +------------+ +------------+ +------------+ +------------+
16 +------------+ +------------+ +------------+ +------------+
18 +-----------+ | | +----------+
20 +----------------------------------+
22 +----------------------------------+
24 +---------+ | | | ------------+
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| H A D | cdc_mbim.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 cdc_mbim - Driver for CDC MBIM Mobile Broadband modems
20 "NCM/MBIM function" as defined in section 3.2 of [1]) is affected
24 -----------
26 :Valid Range: N/Y (0-1)
45 not participate in the management of the function. This implies that a
46 userspace MBIM management application always is required to enable a
51 - mbimcli (included with the libmbim [3] library), and
52 - ModemManager [4]
55 management application:
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| /linux/net/bluetooth/cmtp/ |
| H A D | capi.c | 3 Copyright (C) 2002-2003 Marcel Holtmann <marcel@holtmann.org>
12 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
77 BT_DBG("session %p application %p appl %u", session, app, appl); in cmtp_application_add()
82 app->state = BT_OPEN; in cmtp_application_add()
83 app->appl = appl; in cmtp_application_add()
85 list_add_tail(&app->list, &session->applications); in cmtp_application_add()
92 BT_DBG("session %p application %p", session, app); in cmtp_application_del()
95 list_del(&app->list); in cmtp_application_del()
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| /linux/Documentation/misc-devices/ |
| H A D | ibmvmc.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
21 https://openpowerfoundation.org/wp-content/uploads/2016/05/LoPAPR_DRAFT_v11_24March2016_cmt1.pdf
27 Console (HMC) - based system management.
31 packaged as an external tower or rack-mounted personal computer. In a
33 processor-based systems.
35 Management Application
36 ----------------------
38 In the management partition, a management application exists which enables
41 State Transfer Application (REST API's).
43 The management application runs on a Linux logical partition on a
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-driver-w1_therm | 6 Values shall be space separated and in the device range
7 (typical -55 degC to 125 degC), if not values will be trimmed
9 stored in a 8bit register in the device. Lowest value is
11 master level, refer to Documentation/w1/w1-generic.rst for
13 Users: any user space application which wants to communicate with
23 embedded in device EEPROM. Be aware that devices support
27 * 'restore': restore EEPROM data in device RAM
29 Users: any user space application which wants to communicate with
41 * '-xx': xx is kernel error when reading power status
43 Users: any user space application which wants to communicate with
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| /linux/Documentation/admin-guide/ |
| H A D | sysfs-rules.rst | 1 Rules on how to access information in sysfs
4 The kernel-exported sysfs exports internal kernel implementation details
10 To minimize the risk of breaking users of sysfs, which are in most cases
11 low-level userspace applications, with a new kernel release, the users
12 of sysfs must follow some rules to use an as-abstract-as-possible way to
21 - Do not use libsysfs
23 offer any abstraction, it exposes all the kernel driver-core
24 implementation details in its own API. Therefore it is not better than
26 Also, it is not actively maintained, in the sense of reflecting the
29 violates many of the rules in this document.
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| /linux/Documentation/block/ |
| H A D | data-integrity.rst | 12 application tried to write is most likely lost.
15 application meant it to. Recent additions to both the SCSI family
19 metadata (or protection information in SCSI terminology) includes a
21 ensures the individual sectors are written in the right order. And
27 technologies are working in their own isolated domains or at best
28 between adjacent nodes in the I/O path. The interesting thing about
30 is well defined and every node in the I/O path can verify the
47 in 520 byte sectors on disk. Data + IMD are interleaved when
54 scatter-gather lists.
60 Also, the 16-bit CRC checksum mandated by both the SCSI and SATA specs
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| /linux/drivers/hid/ |
| H A D | hid-multitouch.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2010-2012 Stephane Chatty <chatty@enac.fr>
6 * Copyright (c) 2010-2013 Benjamin Tissoires <benjamin.tissoires@gmail.com>
7 * Copyright (c) 2010-2012 Ecole Nationale de l'Aviation Civile, France
8 * Copyright (c) 2012-2013 Red Hat, Inc
10 * This code is partly based on hid-egalax.c:
16 * This code is partly based on hid-3m-pct.c:
18 * Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
27 * This driver is regularly tested thanks to the test suite in hid-tools[1].
31 * [1] https://gitlab.freedesktop.org/libevdev/hid-tools
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| /linux/Documentation/networking/device_drivers/wwan/ |
| H A D | iosm.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
3 .. Copyright (C) 2020-21 Intel Corporation
13 MBIM protocol [1]. Any front end application ( eg: Modem Manager) could easily
20 not play any role in managing the functionality. It is the job of a userspace
21 application to detect port enumeration and enable MBIM functionality.
23 Examples of few such userspace application are:
24 - mbimcli (included with the libmbim [2] library), and
25 - Modem Manager [3]
29 - open the MBIM control channel
30 - configure network connection settings
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| /linux/Documentation/arch/powerpc/ |
| H A D | cxlflash.rst | 12 purpose co-processors which can read or write an application's
14 an adapter running in CAPI mode does not require the data buffers to
27 user space application direct access to Flash storage.
29 The CXL Flash Adapter Driver is a kernel module that sits in the
35 as described in Documentation/arch/powerpc/cxl.rst.
40 - Any flash device (LUN) can be configured to be accessed as a
43 - Any flash device (LUN) can be configured to be accessed from
47 or physical LUN access) or access to a kernel/AFU-mediated
59 directly in each user I/O, but at the minimum is involved in the
60 initial setup before the user application is allowed to send requests
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| H A D | vas-api.rst | 1 .. SPDX-License-Identifier: GPL-2.0
2 .. _VAS-API:
12 allows both userspace and kernel communicate to co-processor
14 unit comprises of one or more hardware engines or co-processor types
17 which supports ZLIB and GZIP compression algorithms in the hardware.
21 Requests to the GZIP engine must be formatted as a co-processor Request
37 Application access to the GZIP engine is provided through
38 /dev/crypto/nx-gzip device node implemented by the VAS/NX device driver.
39 An application must open the /dev/crypto/nx-gzip device to obtain a file
42 engine for this process. Once a connection is established, the application
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| /linux/drivers/crypto/caam/ |
| H A D | qi.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright 2013-2016 Freescale Semiconductor, Inc.
6 * Copyright 2016-2017, 2020 NXP
19 /* Length of a single buffer in the QI driver memory cache */
25 * This is the request structure the driver application should fill while
31 * caam_qi_cbk - application's callback function invoked by the driver when the
34 * @status: completion status of request (0 - success, non-zero - error code)
45 * caam_drv_ctx - CAAM/QI backend driver context
55 * @req_fq: to-CAAM request frame queue
56 * @rsp_fq: from-CAAM response frame queue
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| /linux/Documentation/admin-guide/cgroup-v1/ |
| H A D | net_prio.rst | 9 Nominally, an application would set the priority of its traffic via the
12 1) The application may not have been coded to set this value
13 2) The priority of application traffic is often a site-specific administrative
14 decision rather than an application defined one.
20 # mount -t cgroup -onet_prio none /sys/fs/cgroup/net_prio
23 becomes visible at '/sys/fs/cgroup/net_prio'. This group includes all tasks in
24 the system. '/sys/fs/cgroup/net_prio/tasks' lists the tasks in this cgroup.
29 This file is read-only, and is simply informative. It contains a unique
35 from processes in this group and egressing the system on various interfaces.
36 It contains a list of tuples in the form <ifname priority>. Contents of this
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| /linux/Documentation/crypto/ |
| H A D | async-tx-api.rst | 1 .. SPDX-License-Identifier: GPL-2.0
24 4.2 "My application needs exclusive control of hardware channels"
32 bulk memory transfers/transforms with support for inter-transactional
43 xor-parity-calculations of the md-raid5 driver using the offload engines
44 present in the Intel(R) Xscale series of I/O processors. It also built
45 on the 'dmaengine' layer developed for offloading memory copies in the
52 in software otherwise.
54 operations to be submitted, like xor->copy->xor in the raid5 case. The
64 -----------------------------
72 ------------------------
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