| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | colorspaces.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
93 specific chromaticity primaries are linear colorspaces. But neither the
94 eye, nor display technology is linear. Doubling the values of all
95 components in the linear colorspace will not be perceived as twice the
97 function that takes a linear color component value and transforms it to
98 the non-linear component value, which is a closer match to the
99 non-linear performance of both the eye and displays. Linear component
100 values are denoted RGB, non-linear are denoted as R'G'B'. In general
102 linear RGB. Special care should be taken when dealing with openGL to
103 provide linear RGB colors or to use the built-in openGL support to apply
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| H A D | pixfmt-yuv-planar.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. planar-yuv:
13 - Semi-planar formats use two planes. The first plane is the luma plane and
17 - Fully planar formats use three planes to store the Y, Cb and Cr components
20 Within a plane, components are stored in pixel order, which may be linear or
27 and applications that support the multi-planar API, described in
28 :ref:`planar-apis`. Unless explicitly documented as supporting non-contiguous
32 Semi-Planar YUV Formats
47 For non-contiguous formats, no constraints are enforced by the format on the
58 .. flat-table:: Overview of Semi-Planar YUV Formats
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-class-backlight | 9 hence linear changes in brightness are perceived as being
10 non-linear. To achieve a linear perception of brightness changes
12 backlights with a linear brightness curve.
19 linear
21 controls should apply a logarithmic mapping for a linear
24 non-linear
25 The brightness changes non-linearly with each step. Brightness
26 controls should use a linear mapping for a linear perception.
38 The value range is device-driver specific:
47 It returns a 13-bits integer.
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| /linux/Documentation/admin-guide/hw-vuln/ |
| H A D | multihit.rst | 13 -------------------
18 - non-Intel processors
20 - Some Atoms (Airmont, Bonnell, Goldmont, GoldmontPlus, Saltwell, Silvermont)
22 - Intel processors that have the PSCHANGE_MC_NO bit set in the
27 ------------
32 CVE-2018-12207 Machine Check Error Avoidance on Page Size Change
37 -------
50 Under this errata, instructions are fetched from a linear address translated
52 paging structure so that the same linear address using large page size (2 MB, 4
55 the linear address, a code fetch that happens on the same linear address may
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| /linux/drivers/sh/intc/ |
| H A D | irqdomain.c | 18 * intc_irq_domain_evt_xlate() - Generic xlate for vectored IRQs.
32 return -EINVAL; in intc_evt_xlate()
50 * Quick linear revmap check in intc_irq_domain_init()
52 irq_base = evt2irq(hw->vectors[0].vect); in intc_irq_domain_init()
53 irq_end = evt2irq(hw->vectors[hw->nr_vectors - 1].vect); in intc_irq_domain_init()
56 * Linear domains have a hard-wired assertion that IRQs start at in intc_irq_domain_init()
58 * restrict the linear case to these conditions here, taking the in intc_irq_domain_init()
59 * tree penalty for linear cases with non-zero hwirq bases. in intc_irq_domain_init()
61 if (irq_base == 0 && irq_end == (irq_base + hw->nr_vectors - 1)) in intc_irq_domain_init()
62 d->domain = irq_domain_create_linear(NULL, hw->nr_vectors, &intc_evt_ops, NULL); in intc_irq_domain_init()
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| /linux/drivers/gpu/drm/amd/display/amdgpu_dm/ |
| H A D | amdgpu_dm_color.c | 1 // SPDX-License-Identifier: MIT
48 * implemented per-plane color management was not a thing yet. Because
50 * properties to pre-blending HW functions. This is incompatible with
51 * per-plane color management, such as via the AMD private properties or
53 * with per-plane color management is the GAMMA property as it is
54 * applied post-blending.
57 * when the kernel is built explicitly with -DAMD_PRIVATE_COLOR. They
58 * are temporary building blocks on the path to full-fledged &drm_plane
66 * -------------------
71 * - Input gamma LUT (de-normalized)
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| /linux/Documentation/trace/rv/ |
| H A D | linear_temporal_logic.rst | 1 Linear temporal logic
5 ------------
16 and error-prone.
18 Thus, RV monitors based on linear temporal logic (LTL) are introduced. This type
24 Christel Baier and Joost-Pieter Katoen: Principles of Model Checking, The MIT
28 -------
32 may not be well-versed in LTL.
38 true, false, user-defined names consisting of upper-case characters, digits,
57 Example linear temporal logic
58 -----------------------------
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| /linux/Documentation/bpf/ |
| H A D | redirect.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
10 --------------
14 - ``BPF_MAP_TYPE_DEVMAP``
15 - ``BPF_MAP_TYPE_DEVMAP_HASH``
16 - ``BPF_MAP_TYPE_CPUMAP``
17 - ``BPF_MAP_TYPE_XSKMAP``
22 -------
24 .. kernel-doc:: net/core/filter.c
29 those that do, not all of them support non-linear frames. Non-linear xdp
33 ----------------------
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| /linux/sound/core/ |
| H A D | pcm_misc.c | 1 // SPDX-License-Identifier: LGPL-2.0+
3 * PCM Interface - misc routines
14 #define SND_PCM_FORMAT_UNKNOWN (-1)
22 signed char le; /* 0 = big-endian, 1 = little-endian, -1 = others */
23 signed char signd; /* 0 = unsigned, 1 = signed, -1 = others */
34 .width = 8, .phys = 8, .le = - in valid_format()
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| /linux/arch/riscv/mm/ |
| H A D | physaddr.c | 1 // SPDX-License-Identifier: GPL-2.0
12 * Boundary checking against the kernel linear mapping space. in __virt_to_phys()
15 "virt_to_phys used for non-linear address: %p (%pS)\n", in __virt_to_phys()
41 return ((unsigned long)(x) - kernel_map.va_pa_offset); in linear_mapping_va_to_pa()
|
| /linux/drivers/hwmon/pmbus/ |
| H A D | max20830.c | 1 // SPDX-License-Identifier: GPL-2.0
33 * supported by this driver and return -ENODATA. This means sysfs attributes
38 * - VOUT_COMMAND and VOUT_MAX set the reference voltage at the feedback pin
39 * - READ_VOUT reports the feedback voltage, which needs to be scaled for actual
61 /* Apply voltage divider scaling if resistors are non-zero */ in max20830_read_word_data()
62 if (data->vout_rfb1 && data->vout_rfb2) { in max20830_read_word_data()
63 temp = (u64)data->vout_rfb1 + (u64)data->vout_rfb2; in max20830_read_word_data()
64 temp = DIV_ROUND_CLOSEST_ULL((u64)ret * temp, data->vout_rfb2); in max20830_read_word_data()
69 return -ENODATA; in max20830_read_word_data()
75 .format[PSC_VOLTAGE_IN] = linear,
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| /linux/tools/include/uapi/linux/ |
| H A D | netdev.h | 1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
2 /* Do not edit directly, auto-generated from: */
4 /* YNL-GEN uapi header */
5 /* To regenerate run: tools/net/ynl/ynl-regen.sh */
24 * @NETDEV_XDP_ACT_RX_SG: This feature informs if netdev implements non-linear
27 * non-linear XDP buffer support in ndo_xdp_xmit callback.
96 NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1)
103 NETDEV_A_IO_URING_PROVIDER_INFO_MAX = (__NETDEV_A_IO_URING_PROVIDER_INFO_MAX - 1)
117 NETDEV_A_PAGE_POOL_MAX = (__NETDEV_A_PAGE_POOL_MAX - 1)
135 NETDEV_A_PAGE_POOL_STATS_MAX = (__NETDEV_A_PAGE_POOL_STATS_MAX - 1)
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| /linux/include/uapi/linux/ |
| H A D | netdev.h | 1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
2 /* Do not edit directly, auto-generated from: */
4 /* YNL-GEN uapi header */
5 /* To regenerate run: tools/net/ynl/ynl-regen.sh */
24 * @NETDEV_XDP_ACT_RX_SG: This feature informs if netdev implements non-linear
27 * non-linear XDP buffer support in ndo_xdp_xmit callback.
96 NETDEV_A_DEV_MAX = (__NETDEV_A_DEV_MAX - 1)
103 NETDEV_A_IO_URING_PROVIDER_INFO_MAX = (__NETDEV_A_IO_URING_PROVIDER_INFO_MAX - 1)
117 NETDEV_A_PAGE_POOL_MAX = (__NETDEV_A_PAGE_POOL_MAX - 1)
135 NETDEV_A_PAGE_POOL_STATS_MAX = (__NETDEV_A_PAGE_POOL_STATS_MAX - 1)
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| /linux/arch/powerpc/include/asm/book3s/64/ |
| H A D | hash-4k.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
20 * linear map range, 1TB of vmalloc, 1TB of I/O and 1TB of vmememmap.
26 * Limits the linear mapping range
31 * Define the address range of the kernel non-linear virtual area (61TB)
101 * addresses other than the linear mapping.
|
| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | ntc-thermistor.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 ---
3 $id: http://devicetree.org/schemas/hwmon/ntc-thermistor.yaml#
4 $schema: http://devicetree.org/meta-schemas/core.yaml#
9 - Linus Walleij <linusw@kernel.org>
13 vary in resistance in an often non-linear way in relation to temperature.
16 temperature is non-linear, software drivers most often need to use a look
20 pull-up resistor or/and a pull-down resistor and a fixed voltage like this:
22 + e.g. 5V = pull-up voltage (puv)
24 +-+
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| /linux/drivers/gpu/drm/rockchip/ |
| H A D | rockchip_vop2_reg.c | 1 // SPDX-License-Identifier: GPL-2.0-only
4 * Author: Andy Yan <andy.yan@rock-chips.com>
68 DRM_FORMAT_YUV420_8BIT, /* yuv420_8bit non-Linear mode only */
69 DRM_FORMAT_YUV420_10BIT, /* yuv420_10bit non-Linear mode only */
70 DRM_FORMAT_YUYV, /* yuv422_8bit non-Linear mode only*/
71 DRM_FORMAT_Y210, /* yuv422_10bit non-Linear mode only */
76 * RGB: linear mode and afbc
77 * YUV: linear mode and rfbc
78 * rfbc is a rockchip defined non-linear mode, produced by
94 DRM_FORMAT_NV12, /* yuv420_8bit linear mode, 2 plane */
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| /linux/arch/powerpc/mm/nohash/ |
| H A D | tlb_low_64e.S | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * Copyright (C) 2008-2009
15 #include <asm/asm-offsets.h>
17 #include <asm/exception-64e.h>
18 #include <asm/ppc-opcode.h>
21 #include <asm/feature-fixups.h>
30 * TLB miss handling for Book3E with a bolted linear mapping *
36 * Note that, unlike non-bolted handlers, TLB_EXFRAME is not
95 /* We pre-test some combination of permissions to avoid double
116 rldicl. r10,r16,64-PGTABLE_EADDR_SIZE,PGTABLE_EADDR_SIZE+4
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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
12 approach this sharing for two-dimensional image data.
25 Conceptually a two-dimensional array of pixels. The pixels may be stored
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
46 A two-dimensional array of some or all of an image's color and alpha
80 A value that denotes the relationship between pixel-location co-ordinates
81 and byte-offset values. Typically used as the byte offset between two
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| /linux/tools/testing/selftests/resctrl/ |
| H A D | cat_test.c | 1 // SPDX-License-Identifier: GPL-2.0
59 fp = fopen(param->filename, "r"); in show_results_info()
63 return -1; in next_mask()
114 * cat_test - Execute CAT benchmark and measure cache misses in check_results()
145 if (strcmp(param->filename, "") == 0)
146 sprintf(param->filename, "stdio");
151 ret = taskset_benchmark(bm_pid, uparams->cpu, &old_affinity);
156 ret = write_bm_pid_to_resctrl(bm_pid, param->ctrlgr
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| /linux/arch/arm64/mm/ |
| H A D | init.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1995-2005 Russell King
25 #include <linux/dma-direct.h>
26 #include <linux/dma-map-ops.h>
42 #include <asm/kernel-pgtable.h>
52 #include <asm/xen/swiotlb-xen.h>
60 s64 memstart_addr __ro_after_init = -1;
65 * and ZONE_DMA32. By default ZONE_DMA covers the 32-bit addressable memory
66 * unless restricted on specific platforms (e.g. 30-bit on Raspberry Pi 4).
67 * In such case, ZONE_DMA32 covers the rest of the 32-bit addressable memory,
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| /linux/drivers/irqchip/ |
| H A D | irq-gic-v5-its.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2024-2025 ARM Limited, All Rights Reserved.
21 #include <linux/irqchip/arm-gic-v5.h>
22 #include <linux/irqchip/irq-msi-lib.h>
24 #include "irq-gic-its-msi-parent.h"
49 return readl_relaxed(its_node->its_base + reg_offset); in its_readl_relaxed()
55 writel_relaxed(val, its_node->its_base + reg_offset); in its_writel_relaxed()
61 writeq_relaxed(val, its_node->its_base + reg_offset); in its_writeq_relaxed()
69 if (its->flags & ITS_FLAGS_NON_COHERENT) in gicv5_its_dcache_clean()
83 FIELD_GET(GICV5_ITS_DT_CFGR_##f, (its)->devtab_cfgr.cfgr)
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| /linux/Documentation/filesystems/ext4/ |
| H A D | directory.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 -----------------
9 that reference the same inode number--these are known as hard links, and
15 Linear (Classic) Directories
18 By default, each directory lists its entries in an “almost-linear”
19 array. I write “almost” because it's not a linear array in the memory
22 data blocks and that each block contains a linear array of directory
23 entries. The end of each per-block array is signified by reaching the
36 .. list-table::
38 :header-rows: 1
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| /linux/arch/x86/include/asm/ |
| H A D | sparsemem.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
9 * generic non-linear memory support:
28 # define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */
|
| /linux/lib/ |
| H A D | textsearch.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
16 * both linear and non-linear data. Individual search algorithms are
21 * .. code-block:: none
24 * +----------------+
25 * | finish()|<--------------(6)-----------------+
26 * |get_next_block()|<--------------(5)---------------+ |
28 * | | +------------------------------+
30 * | | +------------------------------+
32 * | | +---------------+ (2) (4) (8)
33 * | (1)|----->| prepare() |---+ | |
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| /linux/tools/testing/selftests/bpf/progs/ |
| H A D | test_xdp_adjust_tail_shrink.c | 1 // SPDX-License-Identifier: GPL-2.0
15 __u8 *data_end = (void *)(long)xdp->data_end; in _xdp_adjust_tail_shrink()
16 __u8 *data = (void *)(long)xdp->data; in _xdp_adjust_tail_shrink()
25 /* non-linear buff test cases */ in _xdp_adjust_tail_shrink()
47 if (bpf_xdp_adjust_tail(xdp, 0 - offset)) in _xdp_adjust_tail_shrink()
|