| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | sensirion,shtc1.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Christopher Ruehl chris.ruehl@gtsys.com.hk
14 designed especially for battery-driven high-volume consumer electronics
24 - sensirion,shtc1
25 - sensirion,shtw1
26 - sensirion,shtc3
31 sensirion,blocking-io:
36 sensirion,low-precision:
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| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | tps6507x.txt | 4 - compatible: "ti,tps6507x"
5 - reg: I2C slave address
6 - regulators: This is the list of child nodes that specify the regulator
11 The regulator is matched with the regulator-compatible.
13 The valid regulator-compatible values are:
15 - xxx-supply: Input voltage supply regulator.
19 If some of input supply is powered through battery or always-on
23 vindcdc1_2-supply: VDCDC1 and VDCDC2 input.
24 vindcdc3-supply : VDCDC3 input.
25 vldo1_2-supply : VLDO1 and VLDO2 input.
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| /linux/drivers/platform/x86/dell/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 Dell x86 platforms, including vendor-specific laptop extension drivers.
25 This is a driver for controlling Alienware BIOS driven
28 USB MCU such as the X51 and X51-R2.
40 See <file:Documentation/userspace-api/dcdbas.rst> for more details on the driver
76 See <file:Documentation/admin-guide/dell_rbu.rst> for more details on the driver.
93 be called dell-rbtn.
132 communicated over ACPI-WMI.
160 be called dell-smo8800.
189 Say Y here if you want to support WMI-based hotkeys on Dell laptops.
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| /linux/drivers/rtc/ |
| H A D | rtc-pcf2127.c | 1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright 2013 Til-Technologies
6 * Author: Renaud Cerrato <r.cerrato@til-technologies.fr>
16 * Datasheets: https://www.nxp.com/docs/en/data-sheet/PCF2127.pdf
17 * https://www.nxp.com/docs/en/data-sheet/PCF2131DS.pdf
73 * PCF2127 has 512 bytes general-purpose static RAM (SRAM) that is
74 * battery backed and can survive a power outage.
165 * If the TS input pin is driven to GND, an interrupt can be generated
172 * If the TS input pin is driven to an intermediate level between GND
214 * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
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| /linux/Documentation/i2c/busses/ |
| H A D | i2c-parport.rst | 2 Kernel driver i2c-parport
7 This is a unified driver for several i2c-over-parallel-port adapters,
11 * i2c-philips-par
12 * i2c-elv
13 * i2c-velleman
14 * video/i2c-parport
25 * (type=6) Barco LPT->DVI (K5800236) adapter
27 * (type=8) VCT-jig
42 -------------------------
44 If you want to build you own i2c-over-parallel-port adapter, here is
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| /linux/Documentation/admin-guide/laptops/ |
| H A D | thinkpad-acpi.rst | 9 - Borislav Deianov <borislav@users.sf.net>
10 - Henrique de Moraes Holschuh <hmh@hmh.eng.br>
12 http://ibm-acpi.sf.net/
19 This driver used to be named ibm-acpi until kernel 2.6.21 and release
20 0.13-20070314. It used to be in the drivers/acpi tree, but it was
21 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
25 The driver is named "thinkpad-acpi". In some places, like module
29 "tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
33 ------
38 - Fn key combinations
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| /linux/drivers/platform/x86/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
12 x86 platforms, including vendor-specific laptop extension drivers.
23 This driver adds support for the ACPI-WMI (Windows Management
26 ACPI-WMI is a proprietary extension to ACPI to expose parts of the
27 ACPI firmware to userspace - this is done through various vendor
38 any ACPI-WMI devices.
45 Say Y here if you want to be able to read a firmware-embedded
50 be called wmi-bmof.
61 This driver provides support for Huawei WMI hotkeys, battery charge
62 control, fn-lock, mic-mute LED, and other extra features.
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| H A D | thinkpad_acpi.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
16 * 2007-10-20 changelog trimmed down
18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
21 * 2006-11-22 0.13 new maintainer
23 * not be updated further in-file.
25 * 2005-03-17 0.11 support for 600e, 770x
28 * 2005-01-16 0.9 use MODULE_VERSION
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| H A D | apple-gmux.c | 1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (C) 2010-2012 Andreas Heider <andreas@meetr.de>
19 #include <linux/apple-gmux.h>
32 * A `Lattice XP2`_ on pre-retinas, a `Renesas R4F2113`_ on pre-T2 retinas.
41 * dual GPUs but no built-in display.)
45 * to access a pre-retina gmux are infixed ``_pio_``, those for a pre-T2
54 * https://www.nxp.com/docs/en/data-sheet/PCAL6524.pdf
112 return inb(gmux_data->iostart + port); in gmux_pio_read8()
118 outb(val, gmux_data->iostart + port); in gmux_pio_write8()
123 return inl(gmux_data->iostart + port); in gmux_pio_read32()
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| /linux/Documentation/scheduler/ |
| H A D | sched-util-clamp.rst | 1 .. SPDX-License-Identifier: GPL-2.0
20 Since the scheduler and schedutil are both driven by PELT (util_avg) signals,
57 foreground, top-app, etc. Util clamp can be used to constrain how much
60 the ones belonging to the currently active app (top-app group). Beside this
65 1. The big cores are free to run top-app tasks immediately. top-app
68 2. They don't run on a power hungry core and drain battery even if they
104 can be useful on general purpose systems that run on battery powered devices.
106 Note that by design RT tasks don't have per-task PELT signal and must always
114 See :ref:`section 3.4 <uclamp-default-values>` for default values and
115 :ref:`3.4.1 <sched-util-clamp-min-rt-default>` on how to change RT tasks
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| /linux/arch/x86/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
27 # Options that are inherently 64-bi
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| /linux/drivers/comedi/drivers/ |
| H A D | s626.c | 1 // SPDX-License-Identifier: GPL-2.0+
6 * COMEDI - Linux Control and Measurement Device Interface
10 * Copyright (C) 2002-2004 Sensoray Co., Inc.
68 * struct s626_private - Working data for s626 driver.
69 * @ai_cmd_running: non-zero if ai_cmd is running.
98 #define S626_INDXMASK(C) (1 << (((C) > 2) ? ((C) * 2 - 1) : ((C) * 2 + 4)))
110 writel(val, dev->mmio + reg); in s626_mc_enable()
116 writel(cmd << 16, dev->mmio + reg); in s626_mc_disable()
124 val = readl(dev->mmio + reg); in s626_mc_test()
129 #define S626_BUGFIX_STREG(REGADRS) ((REGADRS) - 4)
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| /linux/arch/arm/boot/dts/samsung/ |
| H A D | exynos4412-midas.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
12 /dts-v1/;
14 #include "exynos4412-ppmu-common.dtsi"
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/input/input.h>
18 #include <dt-bindings/interrupt-controller/irq.h>
19 #include <dt-bindings/clock/maxim,max77686.h>
20 #include "exynos-pinctrl.h"
34 stdout-path = &serial_2;
38 compatible = "samsung,secure-firmware";
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| H A D | exynos4212-tab3.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include "exynos4412-ppmu-common.dtsi"
12 #include "exynos-mfc-reserved-memory.dtsi"
13 #include <dt-bindings/clock/samsung,s2mps11.h>
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/leds/common.h>
16 #include <dt-bindings/input/gpio-keys.h>
17 #include <dt-bindings/input/input.h>
18 #include <dt-bindings/interrupt-controller/irq.h>
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| /linux/arch/arm64/boot/dts/qcom/ |
| H A D | sm7225-fairphone-fp4.dts | 1 // SPDX-License-Identifier: BSD-3-Clause
6 /dts-v1/;
15 #include <dt-bindings/firmware/qcom,scm.h>
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/iio/qcom,spmi-adc7-pmk8350.h>
18 #include <dt-bindings/input/input.h>
19 #include <dt-bindings/leds/common.h>
20 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
21 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
22 #include <dt-bindings/usb/pd.h>
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| /linux/Documentation/virt/kvm/x86/ |
| H A D | timekeeping.rst | 1 .. 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.
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
63 -------------- | +->| GATE TIMER 0 |
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| /linux/drivers/spi/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
13 dynamic device discovery; some are even write-only or read-only.
17 chips, analog to digital (and d-to-a) converters, and more.
44 If your system has an master-capable SPI controller (which
56 by providing a high-level interface to send memory-like commands.
66 This enables support for SPI-NAND mode on the Airoha NAND
68 is implemented as a SPI-MEM controller.
155 supports spi-mem interface.
234 this code to manage the per-word or per-transfer accesses to the
248 inexpensive battery powered microcontroller evaluation board.
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| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | 1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 2010-2021 Johan Hovold (johan@kernel.org)
10 * control thanks to Munir Nassar nassarmu@real-time.com
55 { USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */
56 { USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
57 { USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
58 { USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
59 { USB_DEVICE(0x04BF, 0x1301) }, /* TDK Corporation NC0110013M - Network Controller */
60 { USB_DEVICE(0x04BF, 0x1303) }, /* TDK Corporation MM0110113M - i3 Micro Module */
63 { USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */
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| /linux/drivers/usb/typec/tcpm/ |
| H A D | tcpm.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2015-2017 Google, Inc
210 VDM_STATE_ERR_BUSY = -3,
211 VDM_STATE_ERR_SEND = -2,
212 VDM_STATE_ERR_TMOUT = -1,
240 * Based on "Table 6-14 Fixed Supply PDO - Sink" of "USB Power Delivery Specification Revision 3.0,
510 * SNK_READY for non-pd link.
583 (tcpm_cc_is_sink((port)->cc1) || tcpm_cc_is_sink((port)->cc2))
590 ((tcpm_cc_is_source((port)->cc1) && \
591 !tcpm_cc_is_source((port)->cc2)) || \
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| /linux/Documentation/admin-guide/ |
| H A D | devices.txt | 1 0 Unnamed devices (e.g. non-device mounts)
7 2 = /dev/kmem OBSOLETE - replaced by /proc/kcore
11 6 = /dev/core OBSOLETE - replaced by /proc/kcore
18 12 = /dev/oldmem OBSOLETE - replaced by /proc/vmcore
31 2 char Pseudo-TTY masters
37 Pseudo-tty's are named as follows:
40 the 1st through 16th series of 16 pseudo-ttys each, and
44 These are the old-style (BSD) PTY devices; Unix98
106 3 char Pseudo-TTY slaves
112 These are the old-style (BSD) PTY devices; Unix98
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| /linux/ |
| H A D | CREDITS | 1 This is at least a partial credits-file of people that have
4 scripts. The fields are: name (N), email (E), web-address
6 snail-mail address (S).
10 ----------
47 D: in-kernel DRM Maintainer
72 E: tim_alpaerts@toyota-motor-europe.com
76 S: B-2610 Wilrijk-Antwerpen
81 W: http://www-stu.christs.cam.ac.uk/~aia21/
102 D: Maintainer of ide-cd and Uniform CD-ROM driver,
103 D: ATAPI CD-Changer support, Major 2.1.x CD-ROM update.
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