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/linux/Documentation/devicetree/bindings/input/
H A Dgpio-keys.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/input/gpio-keys.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
15 - gpio-keys
16 - gpio-keys-polled
23 poll-interval: true
26 …"^(button|event|key|switch|(button|event|key|switch)-[a-z0-9-]+|[a-z0-9-]+-(button|event|key|switc…
35 - items:
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H A Dsamsung,s3c6410-keypad.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/input/samsung,s3c6410-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 Samsung SoC Keypad controller is used to interface a SoC with a matrix-type
12 A key can be placed at each intersection of a unique row and a unique column.
13 The keypad controller can sense a key-press and key-release and report the
17 - Krzysztof Kozlowski <krzk@kernel.org>
22 - samsung,s3c6410-keypad
23 - samsung,s5pv210-keypad
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H A Dqcom,pm8921-keypad.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/qcom,pm8921-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
13 - $ref: input.yaml#
14 - $ref: matrix-keymap.yaml#
19 - qcom,pm8058-keypad
20 - qcom,pm8921-keypad
27 - description: key sense
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H A Dgpio-matrix-keypad.txt4 The matrix keypad supports multiple row and column lines, a key can be
6 keypad can sense a key-press and key-release by means of GPIO lines and
10 - compatible: Should be "gpio-matrix-keypad"
11 - row-gpios: List of gpios used as row lines. The gpio specifier
14 - col-gpios: List of gpios used as column lines. The gpio specifier
17 - linux,keymap: The definition can be found at
18 bindings/input/matrix-keymap.txt
21 - linux,no-autorepeat: do no enable autorepeat feature.
22 - wakeup-source: use any event on keypad as wakeup event.
23 (Legacy property supported: "linux,wakeup")
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H A Dmicrochip,qt1050.txt1 Microchip AT42QT1050 Five-channel Touch Sensor IC
11 - compatible: Must be "microchip,qt1050"
12 - reg: The I2C address of the device
13 - interrupts: The sink for the touchpad's IRQ output,
14 see ../interrupt-controller/interrupts.txt
17 - wakeup-source: touch keys can be used as a wakeup source
19 Each button (key) is represented as a sub-node:
21 Each not specified key or key with linux,code set to KEY_RESERVED gets disabled
25 - linux,code: Keycode to emit.
26 - reg: The key number. Valid values: 0, 1, 2, 3, 4.
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H A Dnvidia,tegra20-kbc.txt2 The key controller has maximum 24 pins to make matrix keypad. Any pin
7 - compatible: "nvidia,tegra20-kbc"
8 - reg: Register base address of KBC.
9 - interrupts: Interrupt number for the KBC.
10 - nvidia,kbc-row-pins: The KBC pins which are configured as row. This is an
12 - nvidia,kbc-col-pins: The KBC pins which are configured as column. This is an
14 - linux,keymap: The keymap for keys as described in the binding document
15 devicetree/bindings/input/matrix-keymap.txt.
16 - clocks: Must contain one entry, for the module clock.
17 See ../clocks/clock-bindings.txt for details.
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/linux/kernel/sched/
H A Dwait.c1 // SPDX-License-Identifier: GPL-2.0-only
8 …_init_waitqueue_head(struct wait_queue_head *wq_head, const char *name, struct lock_class_key *key) in __init_waitqueue_head() argument
10 spin_lock_init(&wq_head->lock); in __init_waitqueue_head()
11 lockdep_set_class_and_name(&wq_head->lock, key, name); in __init_waitqueue_head()
12 INIT_LIST_HEAD(&wq_head->head); in __init_waitqueue_head()
21 wq_entry->flags &= ~WQ_FLAG_EXCLUSIVE; in add_wait_queue()
22 spin_lock_irqsave(&wq_head->lock, flags); in add_wait_queue()
24 spin_unlock_irqrestore(&wq_head->lock, flags); in add_wait_queue()
32 wq_entry->flags |= WQ_FLAG_EXCLUSIVE; in add_wait_queue_exclusive()
33 spin_lock_irqsave(&wq_head->lock, flags); in add_wait_queue_exclusive()
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/linux/kernel/futex/
H A Drequeue.c1 // SPDX-License-Identifier: GPL-2.0-or-later
26 * Q_REQUEUE_PI_NONE -> Q_REQUEUE_PI_IGNORE
27 * Q_REQUEUE_PI_IN_PROGRESS -> Q_REQUEUE_PI_WAIT
30 * Q_REQUEUE_PI_NONE -> Q_REQUEUE_PI_INPROGRESS
31 * Q_REQUEUE_PI_IN_PROGRESS -> Q_REQUEUE_PI_DONE/LOCKED
32 * Q_REQUEUE_PI_IN_PROGRESS -> Q_REQUEUE_PI_NONE (requeue failed)
33 * Q_REQUEUE_PI_WAIT -> Q_REQUEUE_PI_DONE/LOCKED
34 * Q_REQUEUE_PI_WAIT -> Q_REQUEUE_PI_IGNORE (requeue failed)
40 * The waiter side signals early wakeup to the requeue side either through
44 * which means the wakeup is interleaving with a requeue in progress it has
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H A Dwaitwake.c1 // SPDX-License-Identifier: GPL-2.0-or-later
64 * smp_mb(); (A) <-- paired with -.
73 * `--------> smp_mb(); (B)
80 * waiters--; (b) unlock(hash_bucket(futex));
104 * acquiring the lock. It then decrements them again after releasing it -
112 if (WARN(q->pi_state || q->rt_waiter, "refusing to wake PI futex\n")) in __futex_wake_mark()
117 * The waiting task can free the futex_q as soon as q->lock_ptr = NULL in __futex_wake_mark()
119 * of a spurious wakeup, for example. A memory barrier is required here in __futex_wake_mark()
123 smp_store_release(&q->lock_ptr, NULL); in __futex_wake_mark()
136 struct task_struct *p = q->task; in futex_wake_mark()
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/linux/arch/arm64/boot/dts/exynos/
H A Dexynosautov9-sadk.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include <dt-bindings/gpio/gpio.h>
12 #include <dt-bindings/input/input.h>
16 compatible = "samsung,exynosautov9-sadk", "samsung,exynosautov9";
18 #address-cells = <2>;
19 #size-cells = <2>;
26 stdout-path = &serial_0;
36 gpio-keys {
37 compatible = "gpio-keys";
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H A Dexynosautov920-sadk.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include "exynos-pinctrl.h"
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/input/input.h>
17 compatible = "samsung,exynosautov920-sadk", "samsung,exynosautov920";
19 #address-cells = <2>;
20 #size-cells = <2>;
27 stdout-path = &serial_0;
30 gpio-keys {
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/linux/drivers/net/wireless/broadcom/brcm80211/brcmfmac/
H A Dfwil_types.h1 // SPDX-License-Identifier: ISC
70 /* primary (ie tx) key */
79 #define BRCMF_OBSS_COEX_AUTO (-1)
84 /* Wakeup on Magic packet: */
86 /* Wakeup on Netpattern */
88 /* Wakeup on loss-of-link due to Disassoc/Deauth: */
90 /* Wakeup on retrograde TSF: */
92 /* Wakeup on loss of beacon: */
94 /* Wakeup after test: */
96 /* Wakeup after PTK refresh: */
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/linux/drivers/net/wireless/intel/iwlwifi/mvm/
H A Dd3.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
14 #include "iwl-modparams.h"
15 #include "fw-api.h"
26 mutex_lock(&mvm->mutex); in iwl_mvm_set_rekey_data()
28 mvmvif->rekey_data.kek_len = data->kek_len; in iwl_mvm_set_rekey_data()
29 mvmvif->rekey_data.kck_len = data->kck_len; in iwl_mvm_set_rekey_data()
30 memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); in iwl_mvm_set_rekey_data()
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/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx6q-var-dt6customboard.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Support for Variscite DART-MX6 Carrier-board
9 /dts-v1/;
12 #include "imx6qdl-var-dart.dtsi"
13 #include <dt-bindings/input/linux-event-codes.h>
16 model = "Variscite DART-MX6 Carrier-board";
20 compatible = "pwm-backlight";
22 brightness-levels = <0 4 8 16 32 64 128 248>;
23 default-brightness-level = <7>;
27 gpio-keys {
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/linux/drivers/input/keyboard/
H A Dmt6779-keypad.c1 // SPDX-License-Identifier: GPL-2.0
16 #define MTK_KPD_NAME "mt6779-keypad"
36 void (*calc_row_col)(unsigned int key,
51 const unsigned short *keycode = keypad->input_dev->keycode; in mt6779_keypad_irq_handler()
54 unsigned int bit_nr, key; in mt6779_keypad_irq_handler() local
57 unsigned int row_shift = get_count_order(keypad->n_cols); in mt6779_keypad_irq_handler()
60 regmap_bulk_read(keypad->regmap, MTK_KPD_MEM, in mt6779_keypad_irq_handler()
63 bitmap_xor(change, new_state, keypad->keymap_state, MTK_KPD_NUM_BITS); in mt6779_keypad_irq_handler()
68 * indicate key status. in mt6779_keypad_irq_handler()
73 key = bit_nr / 32 * 16 + bit_nr % 32; in mt6779_keypad_irq_handler()
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H A Dpmic8xxx-keypad.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
69 * '0' for key press
70 * '1' for key release
78 * struct pmic8xxx_kp - internal keypad data structure
83 * @key_sense_irq: key press/release irq number
84 * @key_stuck_irq: key stuck notification irq number
85 * @keycodes: array to hold the key codes
87 * @keystate: present key press/release state
88 * @stuckstate: present state when key stuck irq
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H A Dsnvs_pwrkey.c1 // SPDX-License-Identifier: GPL-2.0+
3 // Driver for the IMX SNVS ON/OFF Power Key
39 int wakeup; member
48 struct input_dev *input = pdata->input; in imx_imx_snvs_check_for_events()
51 regmap_read(pdata->snvs, SNVS_HPSR_REG, &state); in imx_imx_snvs_check_for_events()
55 if (state ^ pdata->keystate) { in imx_imx_snvs_check_for_events()
56 pdata->keystate = state; in imx_imx_snvs_check_for_events()
57 input_event(input, EV_KEY, pdata->keycode, state); in imx_imx_snvs_check_for_events()
59 pm_relax(pdata->input->dev.parent); in imx_imx_snvs_check_for_events()
64 mod_timer(&pdata->check_timer, in imx_imx_snvs_check_for_events()
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/linux/arch/arm/boot/dts/samsung/
H A Dexynos4210-origen.dts1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
7 * Copyright (c) 2010-2011 Linaro Ltd.
14 /dts-v1/;
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/input/input.h>
18 #include <dt-bindings/leds/common.h>
19 #include "exynos-mfc-reserved-memory.dtsi"
40 stdout-path = "serial2:115200n8";
43 mmc_reg: voltage-regulator {
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H A Dexynos5250-arndale.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
12 #include <dt-bindings/input/input.h>
13 #include <dt-bindings/clock/samsung,s2mps11.h>
14 #include <dt-bindings/sound/samsung-i2s.h>
32 stdout-path = "serial2:115200n8";
35 gpio-keys {
36 compatible = "gpio-keys";
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/linux/Documentation/devicetree/bindings/crypto/
H A Dfsl,sec-v4.0-mon.yaml1 # SPDX-License-Identifier: GPL-2.0
2 # Copyright (C) 2008-2011 Freescale Semiconductor Inc.
4 ---
5 $id: http://devicetree.org/schemas/crypto/fsl,sec-v4.0-mon.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Freescale Secure Non-Volatile Storage (SNVS)
11 - '"Horia Geantă" <horia.geanta@nxp.com>'
12 - Pankaj Gupta <pankaj.gupta@nxp.com>
13 - Gaurav Jain <gaurav.jain@nxp.com>
18 violations. This also included rtc, system power off and ON/OFF key.
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/linux/Documentation/devicetree/bindings/power/
H A Dwakeup-source.txt1 Specifying wakeup capability for devices
5 ----------------
6 Nodes that describe devices which have wakeup capability may contain a
7 "wakeup-source" boolean property.
9 If the device is marked as a wakeup-source, interrupt wake capability depends
10 on the device specific "interrupt-names" property. If no interrupts are labeled
14 However if a device has a dedicated interrupt as the wakeup source, then it
16 cases only that interrupt can be used as a wakeup interrupt.
18 While various legacy interrupt names exist, new devices should use "wakeup" as
22 ---------------------------------------------------------
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/linux/Documentation/scheduler/
H A Dsched-capacity.rst9 ----------------
13 different performance characteristics - on such platforms, not all CPUs can be
23 - not all CPUs may have the same microarchitecture (µarch).
24 - with Dynamic Voltage and Frequency Scaling (DVFS), not all CPUs may be
28 performance-oriented than the LITTLE ones (more pipeline stages, bigger caches,
39 -------------------
49 while ``original capacity`` is class-agnostic. The rest of this document will use
54 ---------------------
59 Consider an hypothetical dual-core asymmetric CPU capacity system where
61 - work_per_hz(CPU0) = W
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/linux/Documentation/input/
H A Dinput-programming.rst34 return -EBUSY;
40 error = -ENOMEM;
44 button_dev->evbit[0] = BIT_MASK(EV_KEY);
45 button_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
83 parts of the input systems what it is - what events can be generated or
88 set_bit(EV_KEY, button_dev->evbit);
89 set_bit(BTN_0, button_dev->keybit);
126 dev->open() and dev->close()
140 return -EBUSY;
154 button_dev->open = button_open;
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/linux/kernel/locking/
H A Dpercpu-rwsem.c1 // SPDX-License-Identifier: GPL-2.0-only
6 #include <linux/percpu-rwsem.h>
15 const char *name, struct lock_class_key *key) in __percpu_init_rwsem() argument
17 sem->read_count = alloc_percpu(int); in __percpu_init_rwsem()
18 if (unlikely(!sem->read_count)) in __percpu_init_rwsem()
19 return -ENOMEM; in __percpu_init_rwsem()
21 rcu_sync_init(&sem->rss); in __percpu_init_rwsem()
22 rcuwait_init(&sem->writer); in __percpu_init_rwsem()
23 init_waitqueue_head(&sem->waiters); in __percpu_init_rwsem()
24 atomic_set(&sem->block, 0); in __percpu_init_rwsem()
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/linux/drivers/net/wireless/realtek/rtw88/
H A Dwow.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright(c) 2018-2019 Realtek Corporation
16 struct cfg80211_wowlan_wakeup wakeup = { in rtw_wow_show_wakeup_reason() local
17 .pattern_idx = -1, in rtw_wow_show_wakeup_reason()
25 wakeup.disconnect = true; in rtw_wow_show_wakeup_reason()
29 wakeup.disconnect = true; in rtw_wow_show_wakeup_reason()
33 wakeup.magic_pkt = true; in rtw_wow_show_wakeup_reason()
37 wakeup.gtk_rekey_failure = true; in rtw_wow_show_wakeup_reason()
44 wakeup.pattern_idx = 0; in rtw_wow_show_wakeup_reason()
52 wakeup.net_detect = &nd_info; in rtw_wow_show_wakeup_reason()
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