| /linux/Documentation/hwmon/ |
| H A D | ina2xx.rst | 10 Addresses: I2C 0x40 - 0x4f
20 Addresses: I2C 0x40 - 0x4f
30 Addresses: I2C 0x40 - 0x4f
40 Addresses: I2C 0x40 - 0x4f
50 Addresses: I2C 0x40 - 0x4f
60 Addresses: I2C 0x40 - 0x4f
70 Addresses: I2C 0x40 - 0x4f
80 -----------
82 The INA219 is a high-side current shunt and power monitor with an I2C
86 The INA220 is a high or low side current shunt and power monitor with an I2C
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| H A D | max16065.rst | 11 Addresses scanned: -
15 http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
21 Addresses scanned: -
25 http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
31 Addresses scanned: -
35 http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
41 Addresses scanned: -
45 http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
47 Author: Guenter Roeck <linux@roeck-us.net>
51 -----------
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| /linux/drivers/gpio/ |
| H A D | gpio-mc33880.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * MC33880 high-side/low-side switch GPIO driver
8 * Freescale MC33880 high-side/low-side switch
45 return spi_write(mc->spi, &mc->port_config, sizeof(mc->port_config)); in mc33880_write_config()
52 mc->port_config |= 1 << offset; in __mc33880_set()
54 mc->port_config &= ~(1 << offset); in __mc33880_set()
64 mutex_lock(&mc->lock); in mc33880_set()
68 mutex_unlock(&mc->lock); in mc33880_set()
77 pdata = dev_get_platdata(&spi->dev); in mc33880_probe()
78 if (!pdata || !pdata->base) { in mc33880_probe()
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| /linux/drivers/net/wireless/intel/iwlwifi/fw/api/ |
| H A D | datapath.h | 1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
4 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
5 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
6 * Copyright (C) 2016-2017 Intel Deutschland GmbH
12 * enum iwl_data_path_subcmd_ids - data path group commands
138 * struct iwl_mu_group_mgmt_cmd - VHT MU-MIMO group configuration
143 * group then bits (group * 2) is the position -1
152 * struct iwl_mu_group_mgmt_notif - VHT MU-MIMO group id notification
156 * group then bits (group * 2) is the position -1
175 * struct iwl_time_sync_cfg_cmd - TM/FTM time sync measurement configuration
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| /linux/tools/perf/pmu-events/arch/arm64/arm/cortex-a75/ |
| H A D | pipeline.json | 9 "PublicDescription": "A linefill caused an instruction side stall",
12 "BriefDescription": "A linefill caused an instruction side stall"
15 "PublicDescription": "A translation table walk caused an instruction side stall",
18 "BriefDescription": "A translation table walk caused an instruction side stall"
21 "PublicDescription": "Duration for which all slots in the Load-Store Unit (LSU) are busy",
24 "BriefDescription": "Duration for which all slots in the Load-Store Unit (LSU) are busy"
27 … all slots in the load-store issue queue are busy. This event counts the cycles where all slots in…
30 … all slots in the load-store issue queue are busy. This event counts the cycles where all slots in…
33 …counts the cycles where all slots in the DP0 and DP1 IQs are full with micro-operations waiting fo…
36 …counts the cycles where all slots in the DP0 and DP1 IQs are full with micro-operations waiting fo…
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| /linux/Documentation/admin-guide/media/ |
| H A D | si476x.rst | 1 .. SPDX-License-Identifier: GPL-2.0
12 -------------------
14 - According to the SiLabs' datasheet it is possible to update the
15 firmware of the radio chip in the run-time, thus bringing it to the
23 -------------------------------
31 * /sys/kernel/debug/<device-name>/acf
52 0x05 smute 0 - Audio is not soft muted
53 1 - Audio is soft muted
60 0x10 pilot 0 - Stereo pilot is not present
61 1 - Stereo pilot is present
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| /linux/tools/testing/selftests/gpio/ |
| H A D | gpio-mockup.sh | 1 #!/bin/bash -efu
2 # SPDX-License-Identifier: GPL-2.0
7 #4: skip test - including run as non-root user
13 module="gpio-mockup"
29 echo "$0 [-frv] [-t type]"
30 echo "-f: full test (minimal set run by default)"
31 echo "-r: test random lines as well as fence posts"
32 echo "-t: interface type:"
33 echo " cdev (character device ABI) - default"
36 echo "-v: verbose progress reporting"
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| /linux/Documentation/arch/arm/ |
| H A D | cluster-pm-race-avoidance.rst | 2 Cluster-wide Power-up/power-down race avoidance algorithm
16 ---------
29 cluster-level operations are only performed when it is truly safe to do
35 disabling those mechanisms may itself be a non-atomic operation (such as
38 power-down and power-up at the cluster level.
46 -----------
50 - DOWN
51 - COMING_UP
52 - UP
53 - GOING_DOWN
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| /linux/net/ipv4/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
40 so-called IP spoofing, however it can pose problems if you use
42 than packets from that host to you) or if you operate a non-routing
52 <file:Documentation/networking/ip-sysctl.rst>.
71 address into account. Furthermore, the TOS (Type-Of-Service) field
89 equal "cost" and chooses one of them in a non-deterministic fashion
132 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
147 Read <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
160 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
173 mobile-IP facilities (allowing laptops to seamlessly move between
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| /linux/drivers/macintosh/ |
| H A D | via-macii.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Device driver for the via ADB on (many) Mac II-class machines
13 * 1999-08-02 (jmt) - Initial rewrite for Unified ADB.
14 * 2000-03-29 Tony Mantler <tonym@mac.linux-m68k.org>
15 * - Big overhaul, should actually work now.
16 * 2006-12-31 Finn Thain - Another overhaul.
24 * ftp://ftp.apple.com/developer/Tool_Chest/Devices_-_Hardware/Apple_Desktop_Bus/
39 /* VIA registers - spaced 0x200 bytes apart */
41 #define B 0 /* B-side data */
42 #define A RS /* A-side data */
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| H A D | via-cuda.c | 1 // SPDX-License-Identifier: GPL-2.0
38 /* VIA registers - spaced 0x200 bytes apart */
40 #define B 0 /* B-side data */
41 #define A RS /* A-side data */
42 #define DIRB (2*RS) /* B-side direction (1=output) */
43 #define DIRA (3*RS) /* A-side direction (1=output) */
44 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
46 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
48 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
55 #define ANH (15*RS) /* A-side data, no handshake */
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| /linux/Documentation/ABI/stable/ |
| H A D | sysfs-driver-aspeed-vuart | 1 What: /sys/bus/platform/drivers/aspeed-vuart/*/lpc_address
4 Description: Configures which IO port the host side of the UART
5 will appear on the host <-> BMC LPC bus.
9 What: /sys/bus/platform/drivers/aspeed-vuart/*/sirq
12 Description: Configures which interrupt number the host side of
13 the UART will appear on the host <-> BMC LPC bus.
17 What: /sys/bus/platform/drivers/aspeed-vuart/*/sirq_polarity
22 Set to 0 for active-low or 1 for active-high.
|
| /linux/Documentation/devicetree/bindings/iio/frequency/ |
| H A D | adi,admv1014.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
21 - adi,admv1014
26 spi-max-frequency:
32 clock-names:
34 - const: lo_in
38 vcm-supply:
40 Common-mode voltage regulator.
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| /linux/Documentation/driver-api/ |
| H A D | spi.rst | 7 often in the range of 1-20 MHz), a "Master Out, Slave In" (MOSI) data
12 additional chipselect line is usually active-low (nCS); four signals are
18 only "master" side interfaces are supported, where Linux talks to SPI
25 a pair of FIFOs connected to dual DMA engines on the other side of the
28 the SPI side of their device as a :c:type:`struct spi_controller
33 board-specific initialization code. A :c:type:`struct spi_driver
46 .. kernel-doc:: include/linux/spi/spi.h
49 .. kernel-doc:: drivers/spi/spi.c
52 .. kernel-doc:: drivers/spi/spi.c
|
| H A D | i2c.rst | 5 the "Inter-IC" bus, a simple bus protocol which is widely used where low
7 some vendors use another name (such as "Two-Wire Interface", TWI) for
12 I2C is a multi-master bus; open drain signaling is used to arbitrate
16 The Linux I2C programming interfaces support the master side of bus
17 interactions and the slave side. The programming interface is
38 .. kernel-doc:: include/linux/i2c.h
41 .. kernel-doc:: drivers/i2c/i2c-boardinfo.c
44 .. kernel-doc:: drivers/i2c/i2c-core-base.c
47 .. kernel-doc:: drivers/i2c/i2c-core-smbus.c
|
| H A D | xillybus.rst | 10 - Introduction
11 -- Background
12 -- Xillybus Overview
14 - Usage
15 -- User interface
16 -- Synchronization
17 -- Seekable pipes
19 - Internals
20 -- Source code organization
21 -- Pipe attributes
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| /linux/Documentation/devicetree/bindings/iio/addac/ |
| H A D | adi,ad74115.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Cosmin Tanislav <cosmin.tanislav@analog.com>
13 The AD74115H is a single-channel software configurable input/output
17 chip solution with an SPI interface. The device features a 16-bit ADC and a
18 14-bit DAC.
25 - adi,ad74115h
30 spi-max-frequency:
33 spi-cpol: true
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| /linux/Documentation/RCU/ |
| H A D | checklist.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 0. Is RCU being applied to a read-mostly situation? If the data
18 tool for the job. Yes, RCU does reduce read-side overhead by
19 increasing write-side overhead, which is exactly why normal uses
27 Yet another exception is where the low real-time latency of RCU's
28 read-side primitives is critically important.
33 counter-intuitive situation where rcu_read_lock() and
49 them -- even x86 allows later loads to be reordered to precede
59 2. Do the RCU read-side critical sections make proper use of
63 under your read-side code, which can greatly increase the
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| /linux/Documentation/scsi/ |
| H A D | megaraid.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 --------
14 interfaces with the applications on one side and all the low level drivers
19 i. Avoid duplicate code from the low level drivers.
20 ii. Unburden the low level drivers from having to export the
24 multiple low level drivers.
32 -------
41 - Jeff Garzik (jgarzik@pobox.com), 02.25.2004 LKML
45 "As Jeff hinted, if your userspace<->driver API is consistent between
46 your new MPT-based RAID controllers and your existing megaraid driver,
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| /linux/arch/powerpc/kernel/ |
| H A D | irq_64.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
8 * Copyright (C) 1996-2001 Cort Dougan
39 #include <linux/radix-tree.h>
74 WARN_ON(!(local_paca->irq_happened & PACA_IRQ_HARD_DIS)); in next_interrupt()
79 * We are responding to the next interrupt, so interrupt-off in next_interrupt()
90 if (local_paca->irq_happened & irq) { in irq_happened_test_and_clear()
91 local_paca->irq_happened &= ~irq; in irq_happened_test_and_clear()
103 * debug_smp_processor_id() business in this low level function. in __replay_soft_interrupts()
108 WARN_ON(!(local_paca->irq_happened & PACA_IRQ_HARD_DIS)); in __replay_soft_interrupts()
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| /linux/kernel/ |
| H A D | context_tracking.c | 1 // SPDX-License-Identifier: GPL-2.0-only
13 * Many thanks to Gilad Ben-Yossef, Paul McKenney, Ingo Molnar, Andrew Morton,
41 /* Record the current task on exiting RCU-tasks (dyntick-idle entry). */
45 WRITE_ONCE(current->rcu_tasks_idle_cpu, smp_processor_id()); in rcu_task_exit()
49 /* Record no current task on entering RCU-tasks (dyntick-idle exit). */
53 WRITE_ONCE(current->rcu_tasks_idle_cpu, -1); in rcu_task_enter()
62 current->trc_reader_special.b.need_mb = true; in rcu_task_trace_heavyweight_enter()
71 current->trc_reader_special.b.need_mb = false; in rcu_task_trace_heavyweight_exit()
86 * CPUs seeing atomic_add_return() must see prior RCU read-side in ct_kernel_exit_state()
107 * and we also must force ordering with the next RCU read-side in ct_kernel_enter_state()
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| /linux/drivers/firmware/imx/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
11 exchange information with DSP side.
18 The System Controller Firmware (SCFW) is a low-level system function
19 which runs on a dedicated Cortex-M core to provide power, clock, and
31 a low-level system function which runs on a dedicated Cortex-M
|
| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | ext-ctrls-camera.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _camera-controls:
13 .. _camera-control-id:
23 .. _v4l2-exposure-auto-type:
28 enum v4l2_exposure_auto_type -
37 .. flat-table::
38 :header-rows: 0
39 :stub-columns: 0
41 * - ``V4L2_EXPOSURE_AUTO``
42 - Automatic exposure time, automatic iris aperture.
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| /linux/drivers/iio/gyro/ |
| H A D | mpu3050.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
9 * enum mpu3050_fullscale - indicates the full range of the sensor in deg/sec
19 * enum mpu3050_lpf - indicates the low pass filter width
42 * struct mpu3050 - instance state container for the device
50 * @lpf: digital low pass filter setting for the device
52 * @calibration: the three signed 16-bit calibration settings that
55 * @trig: trigger for the MPU-3050 interrupt, if present
57 * @irq_actl: interrupt is active low
65 * a pass-through I2C interface coming out of it: this device needs to be
66 * powered up in order to reach devices on the other side of this mux
|
| /linux/Documentation/userspace-api/media/drivers/ |
| H A D | max2175.rst | 1 .. SPDX-License-Identifier: GPL-2.0
6 The MAX2175 driver implements the following driver-specific controls:
9 -------------------------------
12 Refer to Documentation/driver-api/media/v4l2-controls.rst for more details.
14 .. flat-table::
15 :header-rows: 0
16 :stub-columns: 0
19 * - ``(0)``
20 - I2S output is disabled.
21 * - ``(1)``
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