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/linux/Documentation/userspace-api/media/v4l/
H A Dpixfmt-z16.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-Z16:
10 16-bit depth data with distance values at each pixel
16 This is a 16-bit format, representing depth data. Each pixel is a
19 is stored in a 16-bit word in the little endian byte order.
27 .. flat-table::
28 :header-rows: 0
29 :stub-columns: 0
31 * - start + 0:
32 - Z\ :sub:`00low`
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/linux/include/linux/
H A Dzorro.h2 * linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
4 * Copyright (C) 1995--2003 Geert Uytterhoeven
50 int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id); /* New device inserted */
51 … void (*remove)(struct zorro_dev *z); /* Device removed (NULL if not a hot-plug capable driver) */
62 /* New-style probing */
72 * Minimal information about a Zorro device, passed from bootinfo
94 #define zorro_resource_start(z) ((z)->resource.start) argument
95 #define zorro_resource_end(z) ((z)->resource.end) argument
96 #define zorro_resource_len(z) (resource_size(&(z)->resource)) argument
97 #define zorro_resource_flags(z) ((z)->resource.flags) argument
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/linux/fs/zonefs/
H A Dsuper.c1 // SPDX-License-Identifier: GPL-2.0
32 * Get the name of a zone group directory.
51 struct zonefs_zone *z) in zonefs_account_active() argument
55 if (zonefs_zone_is_cnv(z)) in zonefs_account_active()
62 if (z->z_flags & (ZONEFS_ZONE_OFFLINE | ZONEFS_ZONE_READONLY)) in zonefs_account_active()
69 if ((z->z_flags & ZONEFS_ZONE_OPEN) || in zonefs_account_active()
70 (z->z_wpoffset > 0 && z->z_wpoffset < z->z_capacity)) { in zonefs_account_active()
71 if (!(z->z_flags & ZONEFS_ZONE_ACTIVE)) { in zonefs_account_active()
72 z->z_flags |= ZONEFS_ZONE_ACTIVE; in zonefs_account_active()
73 atomic_inc(&sbi->s_active_seq_files); in zonefs_account_active()
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H A Dfile.c1 // SPDX-License-Identifier: GPL-2.0
32 struct zonefs_zone *z = zonefs_inode_zone(inode); in zonefs_read_iomap_begin() local
33 struct super_block *sb = inode->i_sb; in zonefs_read_iomap_begin()
38 * act as if there is a hole up to the file maximum size. in zonefs_read_iomap_begin()
40 mutex_lock(&zi->i_truncate_mutex); in zonefs_read_iomap_begin()
41 iomap->bdev = inode->i_sb->s_bdev; in zonefs_read_iomap_begin()
42 iomap->offset = ALIGN_DOWN(offset, sb->s_blocksize); in zonefs_read_iomap_begin()
44 if (iomap->offset >= isize) { in zonefs_read_iomap_begin()
45 iomap->type = IOMAP_HOLE; in zonefs_read_iomap_begin()
46 iomap->addr = IOMAP_NULL_ADDR; in zonefs_read_iomap_begin()
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/linux/Documentation/arch/arm/nwfpe/
H A Dnetwinder-fpe.rst14 {P|M|Z} = {round to +infinity,round to -infinity,round to zero},
20 ------------------------------------------------------------
22 LDF/STF - load and store floating
30 LFM/SFM - load and store multiple floating
47 ----------------------------------------------------------------
51 FLT{cond}<S,D,E>{P,M,Z} Fn, Rd Convert integer to floating point
52 FIX{cond}{P,M,Z} Rd, Fn Convert floating point to integer
76 ---------------------------------------------------
80 ADF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - add
81 SUF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - subtract
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H A Dtodo.rst6 POW{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - power
7 RPW{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - reverse power
8 POL{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - polar angle (arctan2)
10 LOG{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - logarithm to base 10
11 LGN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - logarithm to base e
12 EXP{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - exponent
13 SIN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - sine
14 COS{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - cosine
15 TAN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - tangent
16 ASN{cond}<S|D|E>{P,M,Z} Fd, <Fm,#value> - arcsine
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/linux/Documentation/devicetree/bindings/iio/
H A Dmount-matrix.txt2 * is the definition of +/- values practical or counterintuitive?
5 * should we have HOWTO engineer a correct matrix for a new device (without comparing to a different…
12 The mounting matrix is a device tree property used to orient any device
13 that produce three-dimensional data in relation to the world where it is
17 reference into the device frame of reference using a translation matrix as
20 The typical usecase is that where a component has an internal representation
21 of the (x,y,z) triplets, such as different registers to read these coordinates,
22 and thus implying that the component should be mounted in a certain orientation
25 For example a device with some kind of screen, where the user is supposed to
28 reference to (x,y,z) orientation, with (x,y) corresponding to these axes on the
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/linux/drivers/zorro/
H A Dzorro-driver.c6 * Loosely based on drivers/pci/pci-driver.c
21 * zorro_match_device - Tell if a Zorro device structure has a matching
26 * Used by a driver to check whether a Zorro device present in the
33 const struct zorro_dev *z) in zorro_match_device() argument
35 while (ids->id) { in zorro_match_device()
36 if (ids->id == ZORRO_WILDCARD || ids->id == z->id) in zorro_match_device()
47 struct zorro_driver *drv = to_zorro_driver(dev->driver); in zorro_device_probe()
48 struct zorro_dev *z = to_zorro_dev(dev); in zorro_device_probe() local
50 if (drv->probe) { in zorro_device_probe()
53 id = zorro_match_device(drv->id_table, z); in zorro_device_probe()
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H A Dzorro.c4 * Copyright (C) 1995-2003 Geert Uytterhoeven
19 #include <linux/dma-mapping.h>
55 struct zorro_dev *z; in zorro_find_device() local
60 for (z = from ? from+1 : &zorro_autocon[0]; in zorro_find_device()
61 z < zorro_autocon+zorro_num_autocon; in zorro_find_device()
62 z++) in zorro_find_device()
63 if (id == ZORRO_WILDCARD || id == z->id) in zorro_find_device()
64 return z; in zorro_find_device()
72 * by the system. Every bit represents a 64K chunk, for a maximum of 8MB
73 * (128 chunks, physical 0x00200000-0x009fffff).
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/linux/mm/
H A Dshuffle.c1 // SPDX-License-Identifier: GPL-2.0
20 return -EINVAL; in shuffle_param_set()
21 if (*(bool *)kp->arg) in shuffle_param_set()
33 * For two pages to be swapped in the shuffle, they must be free (on a
42 * Given we're dealing with randomly selected pfns in a zone we in shuffle_valid_page()
54 /* ...is the page free and currently on a free_area list? */ in shuffle_valid_page()
69 * Fisher-Yates shuffle the freelist which prescribes iterating through an
71 * the span, end_pfn - start_pfn.
74 * of bias in the distribution, like modulo bias or pseudo-random number
77 * be a perfect shuffle.
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/linux/Documentation/devicetree/bindings/iio/accel/
H A Dlis302.txt3 This device is matched via its bus drivers, and has a number of properties
8 - compatible: should be set to "st,lis3lv02d-spi"
9 - reg: the chipselect index
10 - spi-max-frequency: maximal bus speed, should be set to 1000000 unless
12 - interrupts: the interrupt generated by the device
15 - compatible: should be set to "st,lis3lv02d"
16 - reg: i2c slave address
17 - Vdd-supply: The input supply for Vdd
18 - Vdd_IO-supply: The input supply for Vdd_IO
23 - st,click-single-{x,y,z}: if present, tells the device to issue an
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/linux/arch/m68k/fpsp040/
H A Dsatan.S5 | input value. satand does the same except the input value is a
8 | Input: Double-extended value in memory location pointed to by address
11 | Output: Arctan(X) returned in floating-point register Fp0.
25 | Step 2. Let X = sgn * 2**k * 1.xxxxxxxx...x. Note that k = -4, -3,..., or 3.
27 | of X with a bit-1 attached at the 6-th bit position. Define u
28 | to be u = (X-F) / (1 + X*F).
30 | Step 3. Approximate arctan(u) by a polynomial poly.
32 | Step 4. Return arctan(F) + poly, arctan(F) is fetched from a table of values
39 | Step 7. Define X' = -1/X. Approximate arctan(X') by an odd polynomial in X'.
232 |--ENTRY POINT FOR ATAN(X) FOR DENORMALIZED ARGUMENT
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/linux/drivers/s390/char/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
24 Include support for using an IBM 3270 terminal as a Linux system
32 Include support for IBM 3215 line-mode terminals.
39 Include support for using an IBM 3215 line-mode terminal as a
50 Include support for IBM SCLP line-mode terminals.
57 Include support for using an IBM HWC line-mode terminal as the Linux
62 prompt "Support for SCLP VT220-compatible terminal"
65 Include support for an IBM SCLP VT220-compatible terminal.
69 prompt "Support for console on SCLP VT220-compatible terminal"
72 Include support for using an IBM SCLP VT220-compatible terminal as a
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/linux/crypto/
H A Dfcrypt.c13 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 /* Rotate right two 32 bit numbers as a 56 bit number */
60 u32 t = lo & ((1 << n) - 1); \
61 lo = (lo >> n) | ((hi & ((1 << n) - 1)) << (32 - n)); \
62 hi = (hi >> n) | (t << (24-n)); \
65 /* Rotate right one 64 bit number as a 56 bit number */
66 #define ror56_64(k, n) (k = (k >> n) | ((k & ((1 << n) - 1)) << (56 - n)))
70 * /afs/transarc.com/public/afsps/afs.rel31b.export-src/rxkad/sboxes.h
72 #undef Z
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/linux/Documentation/ABI/testing/
H A Dsysfs-ata3 Provide a place in sysfs for storing the ATA topology of the
8 -------------------------------
10 For each port, a directory ataX is created where X is the ata_port_id of the
20 nr_pmp_links: (RO) If a SATA Port Multiplier (PM) is
35 persistent links in /dev/disk/by-path.
38 -------------------------------
40 Behind each port, there is a ata_link. If there is a SATA PM in the topology, 15
43 If a link is behind a port, the directory name is linkX, where X is ata_port_id
44 of the port. If a link is behind a PM, its name is linkX.Y where X is
65 ---------------------------------
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/linux/drivers/gpu/drm/xe/tests/
H A Dxe_args_test.c1 // SPDX-License-Identifier: GPL-2.0
12 #define foo X, Y, Z, Q in call_args_example()
26 #define foo X, Y, Z, Q in drop_first_arg_example()
39 #define foo X, Y, Z, Q in first_arg_example()
53 #define foo X, Y, Z, Q in last_arg_example()
65 int Y = 1, Z = 2; in pick_arg_example() local
67 #define foo X, Y, Z, Q in pick_arg_example()
73 KUNIT_EXPECT_EQ(test, buz, Z); in pick_arg_example()
74 KUNIT_EXPECT_STREQ(test, __stringify(buz), "Z"); in pick_arg_example()
83 #define foo(f) f(X) f(Y) f(Z) f(Q) in sep_comma_example()
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/linux/Documentation/driver-api/
H A Dzorro.rst5 :Author: Written by Geert Uytterhoeven <geert@linux-m68k.org>
10 ------------
13 AutoConfig(tm), it's 100% Plug-and-Play.
17 - The Zorro II address space is 24-bit and lies within the first 16 MB of the
20 - Zorro III is a 32-bit extension of Zorro II, which is backwards compatible
25 -------------------------
27 Zorro devices are found by calling ``zorro_find_device()``, which returns a
28 pointer to the ``next`` Zorro device with the specified Zorro ID. A probe loop
31 struct zorro_dev *z = NULL;
33 while ((z = zorro_find_device(ZORRO_PROD_xxx, z))) {
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/linux/include/linux/input/
H A Dadxl34x.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
20 * X,Y,Z Axis Offset:
22 * form with a scale factor of 15.6 mg/LSB (i.e. 0x7F = +2 g)
30 * TAP_X/Y/Z Enable: Setting TAP_X, Y, or Z Enable enables X,
31 * Y, or Z participation in Tap detection. A '0' excludes the
50 * (i.e. 0xFF = +16 g). A zero value may result in undesirable
60 * to qualify as a tap event. The scale factor is 625 us/LSB. A zero
69 * from the detection of a tap event to the opening of the time
70 * window tap_window for a possible second tap event. The scale
71 * factor is 1.25 ms/LSB. A zero value will disable the Double Tap
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/linux/drivers/i2c/busses/
H A Di2c-icy.c1 // SPDX-License-Identifier: GPL-2.0
3 * I2C driver for stand-alone PCF8584 style adapters on Zorro cards
8 * There has been a modern community re-print of this design in 2019:
11 * The card is basically a Philips PCF8584 connected straight to the
17 * This started as a fork of i2c-elektor.c and has evolved since.
18 * Thanks go to its authors for providing a base to grow on.
23 * As it turns out, i2c-algo-pcf is really written with i2c-elektor's
24 * edge-triggered ISA interrupts in mind, while the Amiga's Zorro bus has
25 * level-triggered interrupts. This means that once an interrupt occurs, we
29 * However, because of the PCF8584's host-side protocol, there is no good
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/linux/tools/testing/selftests/bpf/progs/
H A Dget_func_args_test.c1 // SPDX-License-Identifier: GPL-2.0
14 __u64 a = 0, z = 0, ret = 0; in BPF_PROG() local
20 err = bpf_get_func_arg(ctx, 0, &a); in BPF_PROG()
24 * to save it, like for 'int a' with 32-bit mov like: in BPF_PROG()
26 * mov %edi,-0x8(%rbp) in BPF_PROG()
30 test1_result &= err == 0 && ((int) a == 1); in BPF_PROG()
33 err = bpf_get_func_arg(ctx, 1, &z); in BPF_PROG()
34 test1_result &= err == -EINVAL; in BPF_PROG()
38 test1_result &= err == -EOPNOTSUPP; in BPF_PROG()
47 __u64 a = 0, b = 0, z = 0, ret = 0; in BPF_PROG() local
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/linux/drivers/md/dm-vdo/indexer/
H A Ddelta-index.c1 // SPDX-License-Identifier: GPL-2.0-only
5 #include "delta-index.h"
16 #include "memory-alloc.h"
19 #include "string-utils.h"
20 #include "time-utils.h"
26 * The entries in a delta index could be stored in a single delta list, but to reduce search times
27 * and update costs it uses multiple delta lists. These lists are stored in a single chunk of
29 * memory, so the location of each delta list is recorded as a bit offset into the memory. Because
30 * the volume index can contain over a million delta lists, we want to be efficient with the size
32 * volume index delta list memory can easily exceed 4 gigabits, so a 64 bit value is needed to
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H A Dopen-chapter.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include "open-chapter.h"
11 #include "memory-alloc.h"
16 #include "hash-utils.h"
19 * Each index zone has a dedicated open chapter zone structure which gets an equal share of the
21 * records are stored in an array in the order they arrive. Additionally, a reference to each
22 * record is stored in a hash table to help determine if a new record duplicates an existing one.
24 * records is 1-based so that record number 0 can be used to indicate an unused hash slot.
26 * Deleted records are marked with a flag rather than actually removed to simplify hash table
28 * indexed by record number instead of by record name. The number of hash slots will always be a
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/linux/arch/arm/nwfpe/
H A Dsoftfloat-macros5 This C source fragment is part of the SoftFloat IEC/IEEE Floating-point
11 National Science Foundation under grant MIP-9311980. The original version
12 of this code was written as part of a project to build a fixed-point vector
16 http://www.jhauser.us/arithmetic/SoftFloat-2b/SoftFloat-source.txt
33 -------------------------------------------------------------------------------
34 Shifts `a' right by the number of bits given in `count'. If any nonzero
38 result will be either 0 or 1, depending on whether `a' is zero or nonzero.
40 -------------------------------------------------------------------------------
42 INLINE void shift32RightJamming( bits32 a, int16 count, bits32 *zPtr )
44 bits32 z;
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/linux/Documentation/arch/s390/
H A Dmonreader.rst2 Linux API for read access to z/VM Monitor Records
5 Date : 2004-Nov-26
14 This item delivers a new Linux API in the form of a misc char device that is
15 usable from user space and allows read access to the z/VM Monitor Records
16 collected by the `*MONITOR` System Service of z/VM.
21 The z/VM guest on which you want to access this API needs to be configured in
25 This item will use the IUCV device driver to access the z/VM services, so you
26 need a kernel with IUCV support. You also need z/VM version 4.4 or 5.1.
33 See also "CP Command and Utility Reference" (SC24-6081-00) for more information
35 and Administration" (SC24-6116-00) for more information on DCSSes.
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/linux/drivers/net/ethernet/8390/
H A Dhydra.c1 // SPDX-License-Identifier: GPL-2.0-only
9 /* The Amiganet is a Zorro-II board made by Hydra Systems. It contains a */
10 /* NS8390 NIC (network interface controller) clone, 16 or 64K on-board RAM */
11 /* and 10BASE-2 (thin coax) and AUI connectors. */
31 #define EI_SHIFT(x) (ei_local->reg_offset[x])
51 #define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) argument
54 static int hydra_init_one(struct zorro_dev *z,
56 static int hydra_init(struct zorro_dev *z);
66 static void hydra_remove_one(struct zorro_dev *z);
81 static int hydra_init_one(struct zorro_dev *z, in hydra_init_one() argument
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