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12

/Documentation/ABI/testing/
Dsysfs-driver-hid-prodikeys7 that the pc-midi keyboard will output.midi data.
9 Type: Read/write
16 note held by the pc-midi driver.
19 Type: Read/write
25 Controls the octave shift modifier in the pc-midi driver.
27 0 means the no ocatve shift.
28 Range: -2..2 (minus 2 to plus 2)
29 Type: Read/Write
/Documentation/trace/
Dmmiotrace.rst2 In-kernel memory-mapped I/O tracing
11 Injection Test Harness. In Dec 2006 - Jan 2007, using the code from Intel,
15 Mmiotrace was built for reverse engineering any memory-mapped IO device with
19 Out-of-tree mmiotrace was originally modified for mainline inclusion and
24 -----------
29 is on-line, therefore mmiotrace takes all but one CPU off-line during run-time
30 activation. You can re-enable CPUs by hand, but you have been warned, there
31 is no way to automatically detect if you are losing events due to CPUs racing.
35 ---------------------
38 $ mount -t debugfs debugfs /sys/kernel/debug
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/Documentation/admin-guide/
Drtc.rst8 the local time zone or daylight savings time -- unless they dual boot
9 with MS-Windows -- but will instead be set to Coordinated Universal Time
12 The newest non-PC hardware tends to just count seconds, like the time(2)
16 Linux has two largely-compatible userspace RTC API families you may
19 * /dev/rtc ... is the RTC provided by PC compatible systems,
20 so it's not very portable to non-x86 systems.
25 Programmers need to understand that the PC/AT functionality is not
30 IRQ, so they can't all issue alarms; and where standard PC RTCs can
35 Old PC/AT-Compatible driver: /dev/rtc
36 --------------------------------------
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Dspkguide.txt15 any later version published by the Free Software Foundation; with no
16 Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
25 http://linux-speakup.org/. Speakup is a set of patches to the standard
50 kernel with no default synthesizer. It is even possible that your
58 If your kernel has been compiled with Speakup, and has no default
72 acntsa -- Accent SA
73 acntpc -- Accent PC
74 apollo -- Apollo
75 audptr -- Audapter
76 bns -- Braille 'n Speak
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/Documentation/networking/device_drivers/ethernet/cirrus/
Dcs89x0.rst1 .. SPDX-License-Identifier: GPL-2.0
33 2.1 CS8900-based Adapter Configuration
34 2.2 CS8920-based Adapter Configuration
46 5.2.1 Diagnostic Self-Test
66 The CS8900-based ISA Ethernet Adapters from Cirrus Logic follow
67 IEEE 802.3 standards and support half or full-duplex operation in ISA bus
69 in 16-bit ISA or EISA bus expansion slots and are available in
70 10BaseT-only or 3-media configurations (10BaseT, 10Base2, and AUI for 10Base-5
73 CS8920-based adapters are similar to the CS8900-based adapter with additional
85 or loaded at run-time as a device driver module.
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/Documentation/misc-devices/
Deeprom.rst11 Addresses scanned: I2C 0x50 - 0x57
28 24C01 1K 0x50 (shadows at 0x51 - 0x57)
29 24C01A 1K 0x50 - 0x57 (Typical device on DIMMs)
30 24C02 2K 0x50 - 0x57
35 24C16 16K 0x50 (additional data at 0x51 - 0x57)
38 Atmel 34C02B 2K 0x50 - 0x57, SW write protect at 0x30-37
39 Catalyst 34FC02 2K 0x50 - 0x57, SW write protect at 0x30-37
40 Catalyst 34RC02 2K 0x50 - 0x57, SW write protect at 0x30-37
41 Fairchild 34W02 2K 0x50 - 0x57, SW write protect at 0x30-37
42 Microchip 24AA52 2K 0x50 - 0x57, SW write protect at 0x30-37
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/Documentation/devicetree/bindings/arm/
Dpmu.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Mark Rutland <mark.rutland@arm.com>
11 - Will Deacon <will.deacon@arm.com>
16 representation in the device tree should be done as under:-
21 - enum:
22 - apm,potenza-pmu
23 - arm,armv8-pmuv3 # Only for s/w models
24 - arm,arm1136-pmu
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/Documentation/scsi/
DNinjaSCSI.rst1 .. SPDX-License-Identifier: GPL-2.0
4 WorkBiT NinjaSCSI-3/32Bi driver for Linux
10 This is Workbit corp.'s(http://www.workbit.co.jp/) NinjaSCSI-3
17 :pcmcia-cs: 3.1.27
18 :gcc: gcc-2.95.4
19 :PC card: I-O data PCSC-F (NinjaSCSI-3),
20 I-O data CBSC-II in 16 bit mode (NinjaSCSI-32Bi)
21 :SCSI device: I-O data CDPS-PX24 (CD-ROM drive),
22 Media Intelligent MMO-640GT (Optical disk drive)
27 (a) Check your PC card is true "NinjaSCSI-3" card.
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/Documentation/filesystems/
Daffs.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Supported read/write.
15 DOS\1 The original Fast File System. Supported read/write.
19 in file names are case-insensitive, as they ought to be.
20 Supported read/write.
22 DOS\3 The "international" Fast File System. Supported read/write.
107 Amiga -> Linux:
111 - R maps to r for user, group and others. On directories, R implies x.
113 - W maps to w.
115 - E maps to x.
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/Documentation/s390/
D3270.rst17 Linux/390. A 3270 device is a block-mode rows-and-columns terminal of
21 You may have 3270s in-house and not know it. If you're using the
22 VM-ESA operating system, define a 3270 to your virtual machine by using
23 the command "DEF GRAF <hex-address>" This paper presumes you will be
26 - DEF GRAF 620
27 - DEF GRAF 621
28 - DEF GRAF 622
29 - DEF GRAF 623
31 Your network connection from VM-ESA allows you to use x3270, tn3270, or
32 another 3270 emulator, started from an xterm window on your PC or
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/Documentation/i2c/
Dwriting-clients.rst5 This is a small guide for those who want to write kernel drivers for I2C
19 it for non-exported symbols too. We will use the prefix ``foo_`` in this
28 routines, and should be zero-initialized except for fields with data you
29 provide. A client structure holds device-specific information like the
66 All other fields are for call-back functions which will be explained
74 structure at all. You should use this to keep device-specific data.
85 to NULL in remove() or if probe() failed anymore. The i2c-core does this
94 to gather information from the client, or write new information to the
99 but many chips have some kind of register-value idea that can easily
107 if (reg < 0x10) /* byte-sized register */
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Dinstantiating-devices.rst13 --------------------------------------------
17 is known in advance. It is thus possible to pre-declare the I2C devices
24 instantiated automatically by i2c-core. The devices will be automatically
38 clock-frequency = <100000>;
47 gpio-controller;
48 #gpio-cells = <2>;
62 which is currently located at :doc:`../firmware-guide/acpi/enumeration`.
104 --------------------------------------------
123 efx->board_info.hwmon_client =
124 i2c_new_client_device(&efx->i2c_adap, &sfe4001_hwmon_info);
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/Documentation/virt/kvm/
Dtimekeeping.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Timekeeping Virtualization for X86-Based Architectures
32 information relevant to KVM and hardware-based virtualization.
41 2.1. i8254 - PIT
42 ----------------
46 channels which can be programmed to deliver periodic or one-shot interrupts.
49 IBM PC, and historically were connected to control RAM refresh and the PC
53 The PIT uses I/O ports 0x40 - 0x43. Access to the 16-bit counters is done
59 -------------- ----------------
61 | 1.1932 MHz|---------->| CLOCK OUT | ---------> IRQ 0
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/Documentation/dev-tools/
Dkcsan.rst5 relies on compile-time instrumentation, and uses a watchpoint-based sampling
9 -----
27 BUG: KCSAN: data-race in generic_permission / kernfs_refresh_inode
29 write to 0xffff8fee4c40700c of 4 bytes by task 175 on cpu 4:
57 CPU: 6 PID: 166 Comm: systemd-journal Not tainted 5.3.0-rc7+ #1
58 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
68 BUG: KCSAN: data-race in e1000_clean_rx_irq+0x551/0xb10
87 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc7+ #2
88 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
132 * ``CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY``: If enabled and a conflicting write
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/Documentation/trace/coresight/
Dcoresight.rst2 Coresight - HW Assisted Tracing on ARM
9 ------------
38 0 CPU 0<-->: C : 0 CPU 0<-->: C : : C : @ STM @ || System ||
39 |->0000000 : T : |->0000000 : T : : T :<--->@@@@@ || Memory ||
40 | #######<-->: I : | #######<-->: I : : I : @@@<-| ||||||||||||
43 | |->### | ! | |->### | ! | ! . | || DAP ||
49 *****************************************************************<-|
63 | * ===== F =====<---------|
65 |-->:: CTI ::<!! === N ===
69 |------>&& ETB &&<......II I =======
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/Documentation/sound/designs/
Doss-emulation.rst2 Notes on Kernel OSS-Emulation
13 as add-on kernel modules, snd-pcm-oss, snd-mixer-oss and snd-seq-oss.
18 is called. The alias is defined ``sound-service-x-y``, where x and y are
22 Only necessary step for auto-loading of OSS modules is to define the
25 alias sound-slot-0 snd-emu10k1
27 As the second card, define ``sound-slot-1`` as well.
29 ``alias sound-slot-0 snd-card-0`` doesn't work any more like the old
38 after the corresponding OSS-emulation module is loaded. Don't worry
79 snd-pcm-oss and snd-rawmidi. In the case of PCM, the following
80 options are available for snd-pcm-oss:
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/Documentation/driver-api/
Dparport-lowlevel.rst5 :Time-stamp: <2000-02-24 13:30:20 twaugh>
34 Port functions (can be overridden by low-level drivers):
37 port->ops->read_data
38 port->ops->write_data
39 port->ops->read_status
40 port->ops->read_control
41 port->ops->write_control
42 port->ops->frob_control
43 port->ops->enable_irq
44 port->ops->disable_irq
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Duio-howto.rst5 :Author: Hans-Jürgen Koch Linux developer, Linutronix
6 :Date: 2006-12-11
12 ------------
18 -------
36 serial or USB) are no candidates for an UIO driver. Hardware that is
39 - The device has memory that can be mapped. The device can be
42 - The device usually generates interrupts.
44 - The device does not fit into one of the standard kernel subsystems.
47 ---------------
54 --------
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/Documentation/arm/sa1100/
Dassabet.rst2 The Intel Assabet (SA-1110 evaluation) board
13 -------------------
25 -----------------------
38 Bootldr is the bootloader developed by Compaq for the iPAQ Pocket PC.
39 John Dorsey has produced add-on patches to add support for Assabet and
55 - ftp://ftp.netwinder.org/users/n/nico/
56 - ftp://ftp.arm.linux.org.uk/pub/linux/arm/people/nico/
57 - ftp://ftp.handhelds.org/pub/linux/arm/sa-1100-patches/
59 Look for redboot-assabet*.tgz. Some installation infos are provided in
60 redboot-assabet*.txt.
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/Documentation/x86/
Dboot.rst1 .. SPDX-License-Identifier: GPL-2.0
10 bootable image, the complicated PC memory model and due to changed
11 expectations in the PC industry caused by the effective demise of
12 real-mode DOS as a mainstream operating system.
28 Protocol 2.02 (Kernel 2.4.0-test3-pre3) New command line protocol.
29 Lower the conventional memory ceiling. No overwrite
31 safe for systems which use the EBDA from SMM or 32-bit
35 Protocol 2.03 (Kernel 2.4.18-pre1) Explicitly makes the highest possible
54 Protocol 2.09 (Kernel 2.6.26) Added a field of 64-bit physical
68 Protocol 2.13 (Kernel 3.14) Support 32- and 64-bit flags being set in
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/Documentation/hwmon/
Dlm85.rst79 - Philip Pokorny <ppokorny@penguincomputing.com>,
80 - Frodo Looijaard <frodol@dds.nl>,
81 - Richard Barrington <rich_b_nz@clear.net.nz>,
82 - Margit Schubert-While <margitsw@t-online.de>,
83 - Justin Thiessen <jthiessen@penguincomputing.com>
86 -----------
92 The LM85 uses the 2-wire interface compatible with the SMBUS 2.0
94 temperatures and five (5) voltages. It has four (4) 16-bit counters for
127 ----------------
133 for 3-wire and 2-wire mode. For this reason, the 2-wire fan modes are not
[all …]
/Documentation/ide/
DChangeLog.ide-cd.1994-20042 * 1.00 Oct 31, 1994 -- Initial version.
3 * 1.01 Nov 2, 1994 -- Fixed problem with starting request in
5 * 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks)
6 * (from mlord) -- minor changes to cdrom_setup()
7 * -- renamed ide_dev_s to ide_drive_t, enable irq on command
8 * 2.00 Nov 27, 1994 -- Generalize packet command interface;
10 * 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices
12 * 2.02 Dec 11, 1994 -- Cache the TOC in the driver.
18 * 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes
21 * 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives.
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/Documentation/driver-api/usb/
Dgadget.rst11 This document presents a Linux-USB "Gadget" kernel mode API, for use
17 - Supports USB 2.0, for high speed devices which can stream data at
20 - Handles devices with dozens of endpoints just as well as ones with
21 just two fixed-function ones. Gadget drivers can be written so
24 - Flexible enough to expose more complex USB device capabilities such
28 - USB "On-The-Go" (OTG) support, in conjunction with updates to the
29 Linux-USB host side.
31 - Sharing data structures and API models with the Linux-USB host side
32 API. This helps the OTG support, and looks forward to more-symmetric
36 - Minimalist, so it's easier to support new device controller hardware.
[all …]
Dusb.rst1 .. _usb-hostside-api:
4 The Linux-USB Host Side API
10 A Universal Serial Bus (USB) is used to connect a host, such as a PC or
18 That master/slave asymmetry was designed-in for a number of reasons, one
22 distributed auto-configuration since the pre-designated master node
37 USB Host-Side API Model
40 Host-side drivers for USB devices talk to the "usbcore" APIs. There are
41 two. One is intended for *general-purpose* drivers (exposed through
49 - USB supports four kinds of data transfers (control, bulk, interrupt,
54 - The device description model includes one or more "configurations"
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/Documentation/usb/
Dgadget_serial.rst7 (updated 8-May-2008 for v2.3)
11 ----------------------
23 License along with this program; if not, write to the Free
25 MA 02111-1307 USA.
35 -------------
48 no longer statically defined. Your Linux based system should mount
55 --------
58 hardware; for example, a PDA, an embedded Linux system, or a PC
62 or a generic USB serial driver running on a host PC::
65 --------------------------------------
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