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/linux/Documentation/driver-api/media/
H A Dv4l2-subdev.rst1 .. SPDX-License-Identifier: GPL-2.0
3 V4L2 sub-devices
4 ----------------
6 Many drivers need to communicate with sub-devices. These devices can do all
8 encoding or decoding. For webcams common sub-devices are sensors and camera
12 driver with a consistent interface to these sub-devices the
13 :c:type:`v4l2_subdev` struct (v4l2-subdev.h) was created.
15 Each sub-device driver must have a :c:type:`v4l2_subdev` struct. This struct
16 can be stand-alone for simple sub-devices or it might be embedded in a larger
18 low-level device struct (e.g. ``i2c_client``) that contains the device data as
[all …]
/linux/include/media/
H A Dv4l2-async.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2012-2013, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
22 * enum v4l2_async_match_type - type of asynchronous subdevice logic to be used
37 * struct v4l2_async_match_desc - async connection match information
39 * @type: type of match that will be used
54 enum v4l2_async_match_type type; member
65 * struct v4l2_async_connection - sub-device connection descriptor, as known to
68 * @match: struct of match type and per-bus type matching data sets
73 * @sd: the related sub-device
88 * struct v4l2_async_notifier_operations - Asynchronous V4L2 notifier operations
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H A Dv4l2-event.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * v4l2-event.h
7 * Copyright (C) 2009--2010 Nokia Corporation.
25 * struct v4l2_kevent - Internal kernel event struct.
26 * @list: List node for the v4l2_fh->available list.
39 * struct v4l2_subscribed_event_ops - Subscribed event operations.
54 * struct v4l2_subscribed_event - Internal struct representing a subscribed
57 * @list: List node for the v4l2_fh->subscribed list.
58 * @type: Event type.
60 * @flags: Copy of v4l2_event_subscription->flags.
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/linux/drivers/media/v4l2-core/
H A Dv4l2-event.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * v4l2-event.c
7 * Copyright (C) 2009--2010 Nokia Corporation.
12 #include <media/v4l2-dev.h>
13 #include <media/v4l2-fh.h>
14 #include <media/v4l2-event.h>
23 idx += sev->first; in sev_pos()
24 return idx >= sev->elems ? idx - sev->elems : idx; in sev_pos()
33 spin_lock_irqsave(&fh->vdev->fh_lock, flags); in __v4l2_event_dequeue()
35 if (list_empty(&fh->available)) { in __v4l2_event_dequeue()
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H A Dv4l2-async.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2012-2013, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
22 #include <media/v4l2-async.h>
23 #include <media/v4l2-device.h>
24 #include <media/v4l2-fwnode.h>
25 #include <media/v4l2-subdev.h>
27 #include "v4l2-subdev-priv.h"
33 if (!n->ops || !n->ops->bound) in v4l2_async_nf_call_bound()
36 return n->ops->bound(n, subdev, asc); in v4l2_async_nf_call_bound()
43 if (!n->ops || !n->ops->unbind) in v4l2_async_nf_call_unbind()
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/linux/fs/xfs/scrub/
H A Dscrub.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2017-2023 Oracle. All Rights Reserved.
39 * repair on-disk data structures. That task was left to the xfs_check
50 * also be cross-referenced against other btrees to look for potential
53 * It is expected that the checkers responsible for per-AG metadata
55 * metadata structure, and perform any relevant cross-referencing before
60 * Block maps and b-trees rooted in an inode present a special challenge
62 * structure of lock -> check -> xref -> unlock still holds, but AG
72 * (directories and attributes) we follow the same btree-scrubbing
82 * re-grab the buffer in the context of the same transaction, we avoid
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/linux/include/linux/
H A Dstddef.h1 /* SPDX-License-Identifier: GPL-2.0 */
16 #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER) argument
19 * sizeof_field() - Report the size of a struct field in bytes
21 * @TYPE: The structure containing the field of interest
24 #define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER)) argument
27 * offsetofend() - Report the offset of a struct field within the struct
29 * @TYPE: The type of the structure
32 #define offsetofend(TYPE, MEMBER) \ argument
33 (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
36 * struct_group() - Wrap a set of declarations in a mirrored struct
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/linux/drivers/gpu/drm/msm/disp/dpu1/
H A Ddpu_hw_catalog.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
4 * Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights reserved.
32 * SSPP sub-blocks/features
34 …* @DPU_SSPP_SCALER_QSEED3_COMPATIBLE, QSEED3-compatible alogorithm support (includes QSEED3, QSEE…
37 * @DPU_SSPP_CSC_10BIT, Support of 10-bit Color space conversion
68 * MIXER sub-blocks/features
69 * @DPU_MIXER_SOURCESPLIT Layer mixer supports source-split configuration
78 * DSPP sub-blocks
87 * CTL sub-blocks
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/linux/Documentation/userspace-api/netlink/
H A Dgenetlink-legacy.rst1 .. SPDX-License-Identifier: BSD-3-Clause
9 the ``genetlink-legacy`` protocol level.
15 -------
28 Attribute type nests
29 --------------------
31 New Netlink families should use ``multi-attr`` to define arrays.
33 define array types reusing attribute type to carry information.
35 For reference the ``multi-attr`` array may look like this::
37 [ARRAY-ATTR]
41 [SOME-OTHER-ATTR]
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/linux/arch/sparc/lib/
H A DGENmemcpy.S1 /* SPDX-License-Identifier: GPL-2.0 */
23 #define LOAD(type,addr,dest) type [addr], dest argument
27 #define STORE(type,src,addr) type src, [addr] argument
72 .type FUNC_NAME,#function
90 sub %o0, %o1, %o3
93 sub %o4, 0x8, %o4
94 sub %g0, %o4, %o4
95 sub %o2, %o4, %o2
104 sub %o2, %g1, %o2
113 sub %o0, %o1, %o3
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H A DNGbzero.S1 /* SPDX-License-Identifier: GPL-2.0 */
19 .type NGmemset, #function
32 .type NGbzero, #function
39 * %g7: store-init %asi to use
40 * %o4: non-store-init %asi to use
53 sub %g2, %g1, %g1
54 sub %o1, %g1, %o1
61 andcc %o0, (64 - 1), %g1
64 sub %g2, %g1, %g1
65 sub %o1, %g1, %o1
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H A DGENbzero.S1 /* SPDX-License-Identifier: GPL-2.0 */
20 .type GENmemset, #function
33 .type GENbzero, #function
52 sub %g2, %g1, %g1
53 sub %o1, %g1, %o1
60 andcc %o0, (64 - 1), %g1
63 sub %g2, %g1, %g1
64 sub %o1, %g1, %o1
71 andn %o1, (64 - 1), %g1
72 sub %o1, %g1, %o1
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/linux/Documentation/userspace-api/media/v4l/
H A Dvidioc-subdev-querycap.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_SUBDEV_QUERYCAP - Query sub-device capabilities
29 Pointer to struct :c:type:`v4l2_subdev_capability`.
34 All V4L2 sub-devices support the ``VIDIOC_SUBDEV_QUERYCAP`` ioctl. It is used to
37 a struct :c:type:`v4l2_subdev_capability` which is filled by the driver. When
43 .. c:type:: v4l2_subdev_capability
45 .. flat-table:: struct v4l2_subdev_capability
46 :header-rows: 0
47 :stub-columns: 0
50 * - __u32
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H A Dvidioc-subdev-enum-frame-interval.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - Enumerate frame intervals
29 Pointer to struct :c:type:`v4l2_subdev_frame_interval_enum`.
35 given sub-device pad. Frame intervals only makes sense for sub-devices
40 on the sub-device output pad depend on the frame format and size on the
46 :c:type:`v4l2_subdev_frame_interval_enum`
54 other pads of the sub-device, as well as on the current active links.
58 Sub-devices that support the frame interval enumeration ioctl should
60 multiple pads of the same sub-device is not defined.
62 .. c:type:: v4l2_subdev_frame_interval_enum
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H A Dvidioc-subdev-g-fmt.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_SUBDEV_G_FMT - VIDIOC_SUBDEV_S_FMT - Get or set the data format on a subdev pad
33 Pointer to struct :c:type:`v4l2_subdev_format`.
42 struct :c:type:`v4l2_subdev_format` to the desired
53 :c:type:`v4l2_subdev_format` contains the current
59 and stored in the sub-device file handle. Two applications querying the
60 same sub-device would thus not interact with each other.
62 For instance, to try a format at the output pad of a sub-device,
63 applications would first set the try format at the sub-device input with
70 current links configuration or sub-device controls value. For instance,
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/linux/net/tipc/
H A Dsubscr.c4 * Copyright (c) 2000-2017, Ericsson AB
5 * Copyright (c) 2005-2007, 2010-2013, Wind River Systems
6 * Copyright (c) 2020-2021, Red Hat Inc
42 static void tipc_sub_send_event(struct tipc_subscription *sub, in tipc_sub_send_event() argument
46 struct tipc_subscr *s = &sub->evt.s; in tipc_sub_send_event()
47 struct tipc_event *evt = &sub->evt; in tipc_sub_send_event()
49 if (sub->inactive) in tipc_sub_send_event()
53 tipc_evt_write(evt, found_lower, p->sr.lower); in tipc_sub_send_event()
54 tipc_evt_write(evt, found_upper, p->sr.upper); in tipc_sub_send_event()
55 tipc_evt_write(evt, port.ref, p->sk.ref); in tipc_sub_send_event()
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/linux/tools/perf/util/
H A Dsetup.py3 from re import sub
9 # Check if CC has options, as is the case in yocto, where it uses CC="cc --sysroot..."
18 # mypy: disable-error-code="union-attr"
19 cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline()
32 "-o", "/dev/null",
33 path.join(src_feature_tests, "test-hello.c")
42 vars[var] = sub("-specs=[^ ]+", "", vars[var])
43 if not clang_has_option("-mcet"):
44 vars[var] = sub("-mcet", "", vars[var])
45 if not clang_has_option("-fcf-protection"):
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/linux/Documentation/virt/kvm/x86/
H A Dintel-tdx.rst1 .. SPDX-License-Identifier: GPL-2.0
10 host and physical attacks. A CPU-attested software module called 'the TDX
16 This documentation describes TDX-specific KVM ABIs. The TDX module needs to be
18 core-kernel provides the support of initializing the TDX module, which is
25 ---------------------
26 :Type: vm ioctl, vcpu ioctl
28 For TDX operations, KVM_MEMORY_ENCRYPT_OP is re-purposed to be generic
29 ioctl with TDX specific sub-ioctl() commands.
33 /* Trust Domain Extensions sub-ioctl() commands. */
48 /* flags for sub-command. If sub-command doesn't use this, set zero. */
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/linux/arch/sparc/kernel/
H A Dhelpers.S1 /* SPDX-License-Identifier: GPL-2.0-only */
4 .type __flushw_user,#function
9 1: save %sp, -128, %sp
13 1: sub %g2, 1, %g2
18 .size __flushw_user,.-__flushw_user
27 .type stack_trace_flush,#function
34 sub %g1, 1, %g3
37 sub %g2, 1, %g2
42 sub %g3, 1, %g3
49 .size stack_trace_flush,.-stack_trace_flush
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/linux/Documentation/devicetree/bindings/powerpc/fsl/
H A Dsrio-rmu.txt5 node is composed of three types of sub-nodes ("fsl-srio-msg-unit",
6 "fsl-srio-dbell-unit" and "fsl-srio-port-write-unit").
10 - compatible
12 Value type: <string>
13 Definition: Must include "fsl,srio-rmu-vX.Y", "fsl,srio-rmu".
18 - reg
20 Value type: <prop-encoded-array>
25 - fsl,liodn
26 Usage: optional-but-recommended (for devices with PAMU)
27 Value type: <prop-encoded-array>
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/linux/tools/testing/ktest/
H A Dktest.pl1 #!/usr/bin/perl -w
2 # SPDX-License-Identifier: GPL-2.0-only
4 # Copyright 2010 - Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
69 "GRUB_REBOOT" => "grub2-reboot",
70 "GRUB_BLS_GET" => "grubby --info=ALL",
78 "LOCALVERSION" => "-test",
81 "TARGET_IMAGE" => "/boot/vmlinuz-test",
426 i.e. -j20
437 …POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outl…
448 CONSOLE = nc -d localhost 3001
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/linux/lib/zlib_inflate/
H A Dinftrees.c1 /* inftrees.c -- generate Huffman trees for efficient decoding
2 * Copyright (C) 1995-2005 Mark Adler
13 The code lengths are lens[0..codes-1]. The result starts at *table,
14 whose indices are 0..2^bits-1. work is a writable array of at least
15 lens shorts, which is used as a work area. type is the type of code
17 -1 is an invalid code, and +1 means that ENOUGH isn't enough. table
23 int zlib_inflate_table(codetype type, unsigned short *lens, unsigned codes, in zlib_inflate_table() argument
31 unsigned drop; /* code bits to drop for sub-table */ in zlib_inflate_table()
63 code lengths are lens[0..codes-1]. Each length corresponds to the in zlib_inflate_table()
64 symbols 0..codes-1. The Huffman code is generated by first sorting the in zlib_inflate_table()
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/linux/tools/lib/python/kdoc/
H A Dparse_data_structs.py2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016-2025 by Mauro Carvalho Chehab <mchehab@kernel.org>.
13 enums and enum symbols and create cross-references for all of them.
21 replace define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ :c:type:`v4l2_event_motion_det`
31 Creates an enriched version of a Kernel header file with cross-links
32 to each C data structure type.
35 uAPI headers will create cross-reference links to the code.
38 enums and enum symbols and create cross-references for all of them.
48 ignore <type> <symbol>`
54 replace <type> <old_symbol> <new_reference>
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/linux/include/soc/tegra/
H A Dbpmp-abi.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2014-2022, NVIDIA CORPORATION. All rights reserved.
66 * A well-defined subset of the MRQ messages that the CPU sends to the
130 * -BPMP_EBADMSG and ignore the request.
144 …* | -------------------- | ------------------------------------ | --------------------------------…
223 * calculated by BPMP, -BPMP_EBADMSG will be returned and the request will
402 * @defgroup CC3 Auto-CC3
457 * mrq_ping_request challenge left shifted by 1 with the carry-bit
548 * The BPMP firmware implements a pseudo-filesystem called
637 * |-------------------|-------|
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/linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/
H A Dbase.c44 const int slot = pt->base >> pt->ptp->shift; in nvkm_mmu_ptp_put()
45 struct nvkm_mmu_ptp *ptp = pt->ptp; in nvkm_mmu_ptp_put()
50 if (!ptp->free) in nvkm_mmu_ptp_put()
51 list_add(&ptp->head, &mmu->ptp.list); in nvkm_mmu_ptp_put()
52 ptp->free |= BIT(slot); in nvkm_mmu_ptp_put()
54 /* If there's no more sub-allocations, destroy PTP. */ in nvkm_mmu_ptp_put()
55 if (ptp->free == ptp->mask) { in nvkm_mmu_ptp_put()
56 nvkm_mmu_ptc_put(mmu, force, &ptp->pt); in nvkm_mmu_ptp_put()
57 list_del(&ptp->head); in nvkm_mmu_ptp_put()
74 ptp = list_first_entry_or_null(&mmu->ptp.list, typeof(*ptp), head); in nvkm_mmu_ptp_get()
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