| /linux/drivers/media/cec/platform/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
14 The CEC bus is present in the HDMI connector and enables communication
15 between compatible devices.
25 CEC bus is present in the HDMI connector and enables communication
37 This driver if for the new AO-CEC module found in G12A SoCs,
38 usually named AO_CEC_B in documentation.
40 CEC bus is present in the HDMI connector and enables communication
41 between compatible devices.
44 tristate "Generic GPIO-based CEC driver"
51 This is a generic GPIO-based CEC driver.
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| /linux/drivers/mailbox/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
5 Mailbox is a framework to control hardware communication between
6 on-chip processors through queued messages and interrupt driven
17 used in Secure mode only.
24 which provides unidirectional mailboxes between processing elements.
33 which provides unidirectional mailboxes between processing elements.
37 will be discovered and possibly managed at probe-time.
53 which can be used in Secure mode only.
61 send short messages between Highbank's A9 cores and the EnergyCore
71 running on the Cortex-M3 rWTM secure processor of the Armada 37xx
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|
| /linux/Documentation/userspace-api/ |
| H A D | dma-buf-alloc-exchange.rst | 1 .. SPDX-License-Identifier: GPL-2.0
2 .. Copyright 2021-2023 Collabora Ltd.
9 support for sharing pixel-buffer allocations between processes, devices, and
10 subsystems. Modern systems require extensive integration between all three
12 approach this sharing for two-dimensional image data.
25 Conceptually a two-dimensional array of pixels. The pixels may be stored
26 in one or more memory buffers. Has width and height in pixels, pixel
30 A span along a single y-axis value, e.g. from co-ordinates (0,100) to
37 A span along a single x-axis value, e.g. from co-ordinates (100,0) to
42 in bytes and at least one handle in some API. May contain one or more
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| /linux/include/linux/ |
| H A D | percpu-refcount.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
7 * This implements a refcount with similar semantics to atomic_t - atomic_inc(),
8 * atomic_dec_and_test() - but percpu.
10 * There's one important difference between percpu refs and normal atomic_t
15 * The refcount will have a range of 0 to ((1U << 31) - 1), i.e. one bit less
16 * than an atomic_t - this is because of the way shutdown works, see
20 * refcount hitting 0 - it can't, if it was in percpu mode. percpu_ref_kill()
21 * puts the ref back in single atomic_t mode, collecting the per cpu refs and
32 * In the aio code, kill_ioctx() is called when we wish to destroy a kioctx; it
44 * once - percpu_ref_kill() does this for you, it returns true once and false if
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| /linux/include/linux/sched/ |
| H A D | sd_flags.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 * sched-domains (multiprocessor balancing) flag declarations.
15 * is usually because the flag describes some shared resource (all CPUs in that
17 * behaviour that we want to disable at some point in the hierarchy for
20 * In those cases it doesn't make sense to have the flag set for a domain but
21 * not have it in (some of) its children: sched domains ALWAYS span their child
22 * domains, so operations done with parent domains will cover CPUs in the lower
40 * involves equalizing a metric between groups), or for flags describing some
41 * shared resource (which would be shared between groups).
89 * NEEDS_GROUPS: Per-CPU capacity is asymmetric between groups.
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|
| /linux/Documentation/dev-tools/ |
| H A D | checkuapi.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
7 The UAPI checker (``scripts/check-uapi.sh``) is a shell script which
8 checks UAPI header files for userspace backwards-compatibility across
14 This section will describe the options with which ``check-uapi.sh``
19 check-uapi.sh [-b BASE_REF] [-p PAST_REF] [-j N] [-l ERROR_LOG] [-i] [-q] [-v]
23 -b BASE_REF Base git reference to use for comparison. If unspecified or empty,
24 will use any dirty changes in tree to UAPI files. If there are no
26 -p PAST_REF Compare BASE_REF to PAST_REF (e.g. -p v6.1). If unspecified or empty,
29 -j JOBS Number of checks to run in parallel (default: number of CPU cores).
30 -l ERROR_LOG Write error log to file (default: no error log is generated).
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| /linux/Documentation/devicetree/bindings/spi/ |
| H A D | cdns,qspi-nor-peripheral-props.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/cdns,qspi-nor-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Peripheral-specific properties for the Cadence QSPI controller.
10 See spi-peripheral-props.yaml for more info.
13 - Vaishnav Achath <vaishnav.a@ti.com>
16 # cdns,qspi-nor.yaml
17 cdns,read-delay:
20 Delay for read capture logic, in clock cycles.
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|
| /linux/Documentation/input/ |
| H A D | multi-touch-protocol.rst | 4 Multi-touch (MT) Protocol
7 :Copyright: |copy| 2009-2010 Henrik Rydberg <rydberg@euromail.se>
11 ------------
13 In order to utilize the full power of the new multi-touch and multi-user
15 objects in direct contact with the device surface, is needed. This
16 document describes the multi-touch (MT) protocol which allows kernel
30 --------------
34 packet. Since these events are ignored by current single-touch (ST)
36 in an existing driver.
48 All drivers mark the end of a multi-touch transfer by calling the usual
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|
| /linux/Documentation/admin-guide/media/ |
| H A D | mgb4.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 ---------------
13 There are two types of parameters - global / PCI card related, found under
23 | 0 - No module present
24 | 1 - FPDL3
25 | 2 - GMSL
28 Module version number. Zero in case of a missing module.
33 | 1 - FPDL3
34 | 2 - GMSL
42 PRODUCT-REVISION-SERIES-SERIAL
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|
| /linux/Documentation/devicetree/bindings/memory-controllers/ |
| H A D | ti-aemif.txt | 4 provide a glue-less interface to a variety of asynchronous memory devices like
11 Davinci DM646x - http://www.ti.com/lit/ug/sprueq7c/sprueq7c.pdf
12 OMAP-L138 (DA850) - http://www.ti.com/lit/ug/spruh77a/spruh77a.pdf
13 Kestone - http://www.ti.com/lit/ug/sprugz3a/sprugz3a.pdf
17 - compatible: "ti,davinci-aemif"
18 "ti,keystone-aemif"
19 "ti,da850-aemif"
21 - reg: contains offset/length value for AEMIF control registers
24 - #address-cells: Must be 2. The partition number has to be encoded in the
25 first address cell and it may accept values 0..N-1
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|
| /linux/Documentation/mm/ |
| H A D | zsmalloc.rst | 6 supposed to work well under low memory conditions. In particular, it
9 (0-order) pages, it would suffer from very high fragmentation --
13 To overcome these issues, zsmalloc allocates a bunch of 0-order pages
15 pages act as a single higher-order page i.e. an object can span 0-order
20 since this satisfies the requirements of all its current users (in the
21 worst case, page is incompressible and is thus stored "as-is" i.e. in
29 issues on 32-bit systems where the VA region for kernel space mappings
59 the number of zspages with usage ratio between 10% and 20%
61 the number of zspages with usage ratio between 20% and 30%
63 the number of zspages with usage ratio between 30% and 40%
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|
| /linux/net/dccp/ccids/lib/ |
| H A D | packet_history.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (c) 2005-7 The University of Waikato, Hamilton, New Zealand.
10 * or e-mail Ian McDonald - ian.mcdonald@jandi.co.nz
14 * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon
17 * and to make it work as a loadable module in the DCCP stack written by
38 return tfrc_tx_hist_slab == NULL ? -ENOBUFS : 0; in tfrc_tx_packet_history_init()
54 return -ENOBUFS; in tfrc_tx_hist_add()
55 entry->seqno = seqno; in tfrc_tx_hist_add()
56 entry->stamp = ktime_get_real(); in tfrc_tx_hist_add()
57 entry->next = *headp; in tfrc_tx_hist_add()
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|
| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | field-order.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _field-order:
9 We have to distinguish between progressive and interlaced video.
13 odd and even field are transmitted, and due to a small delay between
22 fields are in fact captured at two different instances in time. An
23 object on screen may well move between one field and the next. For
29 combine to frames. We distinguish between top (aka odd) and bottom (aka
43 determined by the video standard. Hence the distinction between temporal
47 In V4L it is assumed that all video cameras transmit fields on the media
48 bus in the same order they were captured, so if the top field was
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|
| /linux/drivers/accel/habanalabs/common/ |
| H A D | security.h | 1 /* SPDX-License-Identifier: GPL-2.0
3 * Copyright 2016-2022 HabanaLabs, Ltd.
11 #include <linux/io-64-nonatomic-lo-hi.h>
23 * struct hl_special_block_info - stores address details of a particular type of
26 * @block_type: block type as described in every ASIC's block_types enum.
32 * @major_offset: address gap between 2 consecutive major blocks of particular type,
33 * e.g., offset between NIC0_UMR0_0 and NIC1_UMR0_0 is 0x80000.
34 * @minor_offset: address gap between 2 consecutive minor blocks of particular type,
35 * e.g., offset between NIC0_UMR0_0 and NIC0_UMR1_0 is 0x20000.
36 * @sub_minor_offset: address gap between 2 consecutive sub_minor blocks of particular
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|
| H A D | security.c | 1 // SPDX-License-Identifier: GPL-2.0
11 "Error due to un-priv read",
12 "Error due to un-secure read",
14 "Error due to un-priv write",
15 "Error due to un-secure write",
28 "External I/F write to un-mapped reg",
40 * hl_get_pb_block - return the relevant block within the block array
43 * @mm_reg_addr: register address in the desired block
62 dev_err(hdev->dev, "No protection domain was found for 0x%x\n", in hl_get_pb_block()
64 return -EDOM; in hl_get_pb_block()
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|
| /linux/drivers/net/ethernet/freescale/ |
| H A D | ucc_geth.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) Freescale Semicondutor, Inc. 2006-2009. All rights reserved.
12 * - Rearrange code and style fixes
40 u8 res0[0x100 - sizeof(struct ucc_fast)];
45 u32 hafdup; /* half-duplex reg. */
56 u8 res3[0x180 - 0x15A];
63 frames) transmitted that were between
67 frames) transmitted that were between 128
73 frames) received that were between MINLength
76 frames) received that were between 128
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|
| /linux/Documentation/devicetree/bindings/arm/ |
| H A D | arm,coresight-cti.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 ---
5 $id: http://devicetree.org/schemas/arm/arm,coresight-cti.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
12 to one or more CoreSight components and/or a CPU, with CTIs interconnected in
17 The CTI component properties define the connections between the individual
21 number is defined at design time, the maximum of each defined in the DEVID
24 CTIs are interconnected in a star topology via the CTM, using a number of
26 described in the DEVID register. The star topology is not required to be
27 described in the bindings as the actual connections are software
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|
| /linux/tools/memory-model/litmus-tests/ |
| H A D | README | 6 Test of read-read coherence, that is, whether or not two
10 Test of read-write coherence, that is, whether or not a read
15 Test of write-read coherence, that is, whether or not a write
20 Test of write-write coherence, that is, whether or not two
25 between each pairs of reads. In other words, is smp_mb()
33 between each pairs of reads. In other words, is anything at all
39 Tests whether the ordering provided by a lock-protected S
45 As below, but with store-release replaced with WRITE_ONCE()
46 and load-acquire replaced with READ_ONCE().
49 Can a release-acquire chain order a prior store against
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|
| /linux/tools/perf/pmu-events/arch/x86/jaketown/ |
| H A D | uncore-memory.json | 12 … "BriefDescription": "DRAM RD_CAS and WR_CAS Commands.; All DRAM WR_CAS (w/ and w/out auto-pre)",
30 … "BriefDescription": "DRAM RD_CAS and WR_CAS Commands.; All DRAM RD_CAS (w/ and w/out auto-pre)",
57 …ption": "DRAM RD_CAS and WR_CAS Commands.; DRAM WR_CAS (w/ and w/out auto-pre) in Read Major Mode",
66 …tion": "DRAM RD_CAS and WR_CAS Commands.; DRAM WR_CAS (w/ and w/out auto-pre) in Write Major Mode",
79 "PublicDescription": "Uncore Fixed Counter - uclks",
117 …s corrected. The iMC can correct up to 4 bit errors in independent channel mode and 8 bit errors …
121 "BriefDescription": "Cycles in a Major Mode; Isoch Major Mode",
126 …number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea …
131 "BriefDescription": "Cycles in a Major Mode; Partial Major Mode",
136 …number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea …
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|
| /linux/drivers/dma-buf/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
11 userspace via Sync File fds for synchronization between drivers via
14 The first and main user for this is graphics in which a fence is
18 Documentation/driver-api/sync_file.rst.
30 WARNING: improper use of this can result in deadlocking kernel
40 A driver to let userspace turn memfd regions into dma-bufs.
44 bool "Move notify between drivers (EXPERIMENTAL)"
48 Don't pin buffers if the dynamic DMA-buf interface is available on
51 through DMA-buf.
53 execution context and memory management between drivers.
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|
| /linux/Documentation/driver-api/pci/ |
| H A D | p2pdma.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 PCI Peer-to-Peer DMA Support
8 between two devices on the bus. This type of transaction is henceforth
9 called Peer-to-Peer (or P2P). However, there are a number of issues that
10 make P2P transactions tricky to do in a perfectly safe way.
13 transactions between hierarchy domains, and in PCIe, each Root Port
18 same PCI bridge, as such devices are all in the same PCI hierarchy
21 between hierarchies.
23 The second issue is that to make use of existing interfaces in Linux,
33 In a given P2P implementation there may be three or more different
[all …]
|
| /linux/Documentation/networking/ |
| H A D | multi-pf-netdev.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 Multi-PF Netdev
11 - `Background`_
12 - `Overview`_
13 - `mlx5 implementation`_
14 - `Channels distribution`_
15 - `Observability`_
16 - `Steering`_
17 - `Mutually exclusive features`_
22 The Multi-PF NIC technology enables several CPUs within a multi-socket server to connect directly to
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|
| /linux/drivers/misc/cxl/ |
| H A D | hcalls.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
26 * The 'flags' parameter regroups the various bit-fields
59 * cxl_h_detach_process - Detach a process element from a coherent
65 * cxl_h_reset_afu - Perform a reset to the coherent platform function.
70 * cxl_h_suspend_process - Suspend a process from being executed
71 * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when
77 * cxl_h_resume_process - Resume a process to be executed
78 * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when
84 * cxl_h_read_error_state - Reads the error state of the coherent
91 * cxl_h_get_afu_err - collect the AFU error buffer
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|
| /linux/Documentation/driver-api/ |
| H A D | pwrseq.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
13 This framework is designed to abstract complex power-up sequences that are
14 shared between multiple logical devices in the linux kernel.
19 mitigate any potential conflicts between multiple users behind the scenes.
22 --------
30 define dependencies in the form of other units that must be enabled before
44 entry point to the provider layer. It ensures coherence between different
50 The consumer API is aimed to be as simple as possible. The driver interested in
52 specify the name of the target it wants to reach in the sequence after calling
63 consumers but it makes up for it in flexibility.
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|
| /linux/arch/arm/mach-omap2/ |
| H A D | clockdomain.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Copyright (C) 2008-2011 Nokia Corporation
33 * hardware-supervised idle mode, the PRCM may transition the
35 * inside the clockdomain and powerdomain are in use. (An example
38 * force-sleep mode, then the HW_AUTO mode will be used to put the
40 * the force-wakeup mode, then it will be used whenever a clock or
57 * struct clkdm_autodep - clkdm deps to add when entering/exiting hwsup mode
58 * @clkdm: clockdomain to add wkdep+sleepdep on - set name member only
61 * clockdomain should stay active in hwsup mode; and conversely,
62 * removed when the clockdomain should be allowed to go inactive in
[all …]
|