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/Documentation/filesystems/spufs/
Dspufs.rst1 .. SPDX-License-Identifier: GPL-2.0
10 spufs - the SPU file system
26 logical SPU. Users can change permissions on those files, but not actu-
43 The files in spufs mostly follow the standard behavior for regular sys-
55 All files support the chmod(2)/fchmod(2) and chown(2)/fchown(2) opera-
81 The first SPU to CPU communication mailbox. This file is read-only and
82 can be read in units of 32 bits. The file can only be used in non-
87 If a count smaller than four is requested, read returns -1 and
89 box, the return value is set to -1 and errno becomes EAGAIN.
90 When data has been read successfully, four bytes are placed in
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/Documentation/i2c/busses/
Di2c-mlxcpld.rst2 Driver i2c-mlxcpld
11 - Master mode.
12 - One physical bus.
13 - Polling mode.
20 - Receive Byte/Block.
21 - Send Byte/Block.
22 - Read Byte/Block.
23 - Write Byte/Block.
28 CPBLTY 0x0 - capability reg.
29 Bits [6:5] - transaction length. b01 - 72B is supported,
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/Documentation/ABI/testing/
Dsysfs-driver-wacom4 Contact: linux-bluetooth@vger.kernel.org
14 Contact: linux-input@vger.kernel.org
25 Contact: linux-input@vger.kernel.org
35 Contact: linux-input@vger.kernel.org
44 Contact: linux-input@vger.kernel.org
47 Writing to this file sets which one of the four (for Intuos 4
48 and Intuos 5) or of the right four (for Cintiq 21UX2 and Cintiq
54 Contact: linux-input@vger.kernel.org
57 Writing to this file sets which one of the left four (for Cintiq 21UX2
63 Contact: linux-input@vger.kernel.org
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/Documentation/sound/cards/
Dserial-u16550.rst7 * 0 - Roland Soundcanvas support (default)
8 * 1 - Midiator MS-124T support (1)
9 * 2 - Midiator MS-124W S/A mode (2)
10 * 3 - MS-124W M/B mode support (3)
11 * 4 - Generic device with multiple input support (4)
13 For the Midiator MS-124W, you must set the physical M-S and A-B
17 (midiCnD0-midiCnD15). Whenever you write to a different substream, the driver
28 /sbin/modprobe snd-serial-u16550 port=0x3f8 irq=4 speed=115200
34 /sbin/modprobe snd-serial-u16550 port=0x3f8 irq=4 outs=4
36 In MS-124T mode, one raw MIDI substream is supported (midiCnD0); the outs
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/Documentation/devicetree/bindings/sound/
Dnvidia,tegra210-adx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-adx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 16 channels and demultiplexes it into four output streams of up to 16
12 channels each. A byte RAM helps to form output frames by any combination
13 of bytes from the input frame. Its design is identical to that of byte
17 - Jon Hunter <jonathanh@nvidia.com>
18 - Mohan Kumar <mkumard@nvidia.com>
19 - Sameer Pujar <spujar@nvidia.com>
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Dnvidia,tegra210-amx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-amx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 The Audio Multiplexer (AMX) block can multiplex up to four input streams
12 with maximum 16 channels. A byte RAM helps to form an output frame by
16 - Jon Hunter <jonathanh@nvidia.com>
17 - Mohan Kumar <mkumard@nvidia.com>
18 - Sameer Pujar <spujar@nvidia.com>
21 - $ref: dai-common.yaml#
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/Documentation/userspace-api/media/v4l/
Dpixfmt-srggb10p.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB10P:
4 .. _v4l2-pix-fmt-sbggr10p:
5 .. _v4l2-pix-fmt-sgbrg10p:
6 .. _v4l2-pix-fmt-sgrbg10p:
16 10-bit packed Bayer formats
22 These four pixel formats are packed raw sRGB / Bayer formats with 10
23 bits per sample. Every four consecutive samples are packed into 5
25 of the pixels, and the 5th byte contains the 2 least significants
28 Each n-pixel row contains n/2 green samples and n/2 blue or red samples,
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Dpixfmt-m420.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-M420:
10 YUV 4:2:0. Hybrid plane line-interleaved layout.
20 The luma plane has one byte per pixel. The chroma plane contains
22 directions. Each CbCr pair belongs to four pixels. For example,
29 **Byte Order.**
30 Each cell is one byte.
33 .. flat-table::
34 :header-rows: 0
35 :stub-columns: 0
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Dpixfmt-srggb12p.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB12P:
4 .. _v4l2-pix-fmt-sbggr12p:
5 .. _v4l2-pix-fmt-sgbrg12p:
6 .. _v4l2-pix-fmt-sgrbg12p:
13 12-bit packed Bayer formats
14 ---------------------------
20 These four pixel formats are packed raw sRGB / Bayer formats with 12
23 the pixels, and the third byte contains the four least significants
26 Each n-pixel row contains n/2 green samples and n/2 blue or red
[all …]
Dpixfmt-srggb8.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB8:
4 .. _v4l2-pix-fmt-sbggr8:
5 .. _v4l2-pix-fmt-sgbrg8:
6 .. _v4l2-pix-fmt-sgrbg8:
14 8-bit Bayer formats
20 These four pixel formats are raw sRGB / Bayer formats with 8 bits per
21 sample. Each sample is stored in a byte. Each n-pixel row contains n/2
26 **Byte Order.**
27 Each cell is one byte.
[all …]
Dpixfmt-srggb14p.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB14P:
4 .. _v4l2-pix-fmt-sbggr14p:
5 .. _v4l2-pix-fmt-sgbrg14p:
6 .. _v4l2-pix-fmt-sgrbg14p:
17 14-bit packed Bayer formats
23 These four pixel formats are packed raw sRGB / Bayer formats with 14
24 bits per colour. Every four consecutive samples are packed into seven
25 bytes. Each of the first four bytes contain the eight high order bits
29 Each n-pixel row contains n/2 green samples and n/2 blue or red samples,
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Dmetafmt-generic.rst1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
8 Generic line-based metadata formats
14 These generic line-based metadata formats define the memory layout of the data
17 .. _v4l2-meta-fmt-generic-8:
20 -----------------------
22 The V4L2_META_FMT_GENERIC_8 format is a plain 8-bit metadata format. This format
23 is used on CSI-2 for 8 bits per :term:`Data Unit`.
26 packed into one 16-bit Data Unit. Otherwise the 16 bits per pixel dataformat is
27 :ref:`V4L2_META_FMT_GENERIC_CSI2_16 <v4l2-meta-fmt-generic-csi2-16>`.
29 **Byte Order Of V4L2_META_FMT_GENERIC_8.**
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Dpixfmt-reserved.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _pixfmt-reserved:
11 register your own format, send an e-mail to the linux-media mailing list
15 copy to the linux-media mailing list for inclusion in this section. If
17 please make a proposal on the linux-media mailing list.
26 .. _reserved-formats:
28 .. flat-table:: Reserved Image Formats
29 :header-rows: 1
30 :stub-columns: 0
33 * - Identifier
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Dpixfmt-srggb12.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB12:
4 .. _v4l2-pix-fmt-sbggr12:
5 .. _v4l2-pix-fmt-sgbrg12:
6 .. _v4l2-pix-fmt-sgrbg12:
17 12-bit Bayer formats expanded to 16 bits
23 These four pixel formats are raw sRGB / Bayer formats with 12 bits per
24 colour. Each colour component is stored in a 16-bit word, with 4 unused
25 high bits filled with zeros. Each n-pixel row contains n/2 green samples
31 **Byte Order.**
[all …]
Dpixfmt-srggb16.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB16:
4 .. _v4l2-pix-fmt-sbggr16:
5 .. _v4l2-pix-fmt-sgbrg16:
6 .. _v4l2-pix-fmt-sgrbg16:
15 16-bit Bayer formats
22 These four pixel formats are raw sRGB / Bayer formats with 16 bits per
23 sample. Each sample is stored in a 16-bit word. Each n-pixel row contains
29 **Byte Order.**
30 Each cell is one byte.
[all …]
Dpixfmt-srggb10.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _V4L2-PIX-FMT-SRGGB10:
4 .. _v4l2-pix-fmt-sbggr10:
5 .. _v4l2-pix-fmt-sgbrg10:
6 .. _v4l2-pix-fmt-sgrbg10:
16 10-bit Bayer formats expanded to 16 bits
22 These four pixel formats are raw sRGB / Bayer formats with 10 bits per
23 sample. Each sample is stored in a 16-bit word, with 6 unused
24 high bits filled with zeros. Each n-pixel row contains n/2 green samples and
30 **Byte Order.**
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/Documentation/filesystems/ext4/
Dinlinedata.rst1 .. SPDX-License-Identifier: GPL-2.0
4 -----------
19 256-byte inode (as of June 2015, when i_extra_isize is 28). Prior to
28 The first four bytes of i_block are the inode number of the parent
29 directory. Following that is a 56-byte space for an array of directory
/Documentation/w1/slaves/
Dw1_ds2413.rst7 * Maxim DS2413 1-Wire Dual Channel Addressable Switch
18 -----------
20 The DS2413 chip has two open-drain outputs (PIO A and PIO B).
24 -------------
25 The "state" file provides one-byte value which is in the same format as for
33 Bit 4-7: Complement of Bit 3 to Bit 0 (verified by the kernel module)
39 --------------
41 It is writable, you can write one-byte value to this sysfs file.
42 Similarly the byte format is the same as for the PIO_ACCESS_WRITE command:
47 Bit 2-7: No matter (driver will set it to "1"s)
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/Documentation/userspace-api/media/cec/
Dcec-pin-error-inj.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
9 has low-level support for the CEC bus. Most hardware today will have
10 high-level CEC support where the hardware deals with driving the CEC bus,
19 Currently only the cec-gpio driver (when the CEC line is directly
20 connected to a pull-up GPIO line) and the AllWinner A10/A20 drm driver
25 now an ``error-inj`` file.
32 With ``cat error-inj`` you can see both the possible commands and the current
35 $ cat /sys/kernel/debug/cec/cec0/error-inj
38 # rx-clear clear all rx error injections
39 # tx-clear clear all tx error injections
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/Documentation/hid/
Dhidreport-parsing.rst1 .. SPDX-License-Identifier: GPL-2.0
10 $ hexdump -C /sys/bus/hid/devices/0003\:093A\:2510.0002/report_descriptor
23 +----------+
25 +----------+
27 ---- Length of data (see HID spec 6.2.2.2)
29 ------ Type of the item (see HID spec 6.2.2.2, then jump to 6.2.2.7)
31 --------- Function of the item (see HID spec 6.2.2.7, then HUT Sec 3)
33 In our case, the length is 1 byte, the type is ``Global`` and the
34 function is ``Usage Page``, thus for parsing the value 0x01 in the second byte
43 ``0x09`` (i.e. ``00001001``) will be followed by one byte (``01``)
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/Documentation/wmi/devices/
Dmsi-wmi-platform.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
4 MSI WMI Platform Features driver (msi-wmi-platform)
24 guid("{ABBC0F60-8EA1-11d1-00A0-C90629100000}")]
31 guid("{ABBC0F63-8EA1-11d1-00A0-C90629100000}")]
38 guid("{ABBC0F6E-8EA1-11d1-00A0-C90629100000}")]
132 happen when a invalid byte field is ultimately accessed), all methods require a 32 byte input
135 The input buffer contains a single byte to select the subfeature to be accessed and 31 bytes of
138 The output buffer contains a single byte which signals success or failure (``0x00`` on failure)
142 The ACPI control method responsible for handling the WMI method calls is not thread-safe.
146 -------------------
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/Documentation/hwmon/
Dpcf8591.rst17 - Aurelien Jarno <aurelien@aurel32.net>
18 - valuable contributions by Jan M. Sendler <sendler@sendler.de>,
19 - Jean Delvare <jdelvare@suse.de>
23 -----------
25 The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one
27 It is designed to provide a byte I2C interface to up to 4 separate devices.
29 The PCF8591 has 4 analog inputs programmable as single-ended or
32 - mode 0 : four single ended inputs
35 - mode 1 : three differential inputs
39 - mode 2 : single ended and differential mixed
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/Documentation/input/devices/
Dsentelic.rst8 :Copyright: |copy| 2002-2011 Sentelic Corporation.
10 :Last update: Dec-07-2011
28 BYTE |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
30 |---------------| |---------------| |---------------| |---------------|
32 Byte 1: Bit7 => Y overflow
40 Byte 2: X Movement(9-bit 2's complement integers)
41 Byte 3: Y Movement(9-bit 2's complement integers)
42 Byte 4: Bit3~Bit0 => the scrolling wheel's movement since the last data report.
43 valid values, -8 ~ +7
51 - Set bit 1 in register 0x40 to 1
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/Documentation/devicetree/bindings/rtc/
Dqcom-pm8xxx-rtc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/rtc/qcom-pm8xxx-rtc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Satya Priya <quic_c_skakit@quicinc.com>
15 - enum:
16 - qcom,pm8058-rtc
17 - qcom,pm8921-rtc
18 - qcom,pm8941-rtc
19 - qcom,pmk8350-rtc
[all …]
/Documentation/ABI/stable/
Dsysfs-driver-ib_srp1 What: /sys/class/infiniband_srp/srp-<hca>-<port_number>/add_target
4 Contact: linux-rdma@vger.kernel.org
7 a comma-separated list of login parameters to this sysfs
10 * id_ext, a 16-digit hexadecimal number specifying the eight
11 byte identifier extension in the 16-byte SRP target port
14 * ioc_guid, a 16-digit hexadecimal number specifying the eight
15 byte I/O controller GUID portion of the 16-byte target port
17 * dgid, a 32-digit hexadecimal number specifying the
19 * pkey, a four-digit hexadecimal number specifying the
21 * service_id, a 16-digit hexadecimal number specifying the
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