| /linux/drivers/base/power/ |
| H A D | common.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * drivers/base/power/common.c - Common device power management code.
19 * dev_pm_get_subsys_data - Create or refcount power.subsys_data for device.
32 return -ENOMEM; in dev_pm_get_subsys_data()
34 spin_lock_irq(&dev->power.lock); in dev_pm_get_subsys_data()
36 if (dev->power.subsys_data) { in dev_pm_get_subsys_data()
37 dev->power.subsys_data->refcount++; in dev_pm_get_subsys_data()
39 spin_lock_init(&psd->lock); in dev_pm_get_subsys_data()
40 psd->refcount = 1; in dev_pm_get_subsys_data()
41 dev->power.subsys_data = psd; in dev_pm_get_subsys_data()
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| /linux/Documentation/devicetree/bindings/power/ |
| H A D | power_domain.txt | 1 * Generic PM domains
3 System on chip designs are often divided into multiple PM domains that can be
7 This device tree binding can be used to bind PM domain consumer devices with
8 their PM domains provided by PM domain providers. A PM domain provider can be
9 represented by any node in the device tree and can provide one or more PM
10 domains. A consumer node can refer to the provider by a phandle and a set of
11 phandle arguments (so called PM domain specifiers) of length specified by the
12 #power-domain-cells property in the PM domain provider node.
14 ==PM domain providers==
16 See power-domain.yaml.
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| H A D | power-domain.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/power-domain.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic PM domains
10 - Rafael J. Wysocki <rafael@kernel.org>
11 - Kevin Hilman <khilman@kernel.org>
12 - Ulf Hansson <ulf.hansson@linaro.org>
15 System on chip designs are often divided into multiple PM domains that can be
17 leakage current. Moreover, in some cases the similar PM domains may also be
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| H A D | renesas,sysc-rmobile.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/renesas,sysc-rmobile.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas R-Mobile System Controller
10 - Geert Uytterhoeven <geert+renesas@glider.be>
11 - Magnus Damm <magnus.damm@gmail.com>
14 The R-Mobile System Controller provides the following functions:
15 - Boot mode management,
16 - Reset generation,
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| H A D | rockchip,power-controller.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/rockchip,power-controller.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Rockchip Power Domains
10 - Elaine Zhang <zhangqing@rock-chips.com>
11 - Heiko Stuebner <heiko@sntech.de>
14 Rockchip processors include support for multiple power domains
18 Power domains contained within power-controller node are
20 Documentation/devicetree/bindings/power/power-domain.yaml.
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| /linux/Documentation/devicetree/bindings/arm/ux500/ |
| H A D | power_domain.txt | 1 * ST-Ericsson UX500 PM Domains
3 UX500 supports multiple PM domains which are used to gate power to one or
6 The implementation of PM domains for UX500 are based upon the generic PM domain
9 ==PM domain providers==
12 - compatible: Must be "stericsson,ux500-pm-domains".
13 - #power-domain-cells : Number of cells in a power domain specifier, must be 1.
17 compatible = "stericsson,ux500-pm-domains";
18 #power-domain-cells = <1>;
21 ==PM domain consumers==
24 - power-domains: A phandle and PM domain specifier. Below are the list of
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| /linux/drivers/pmdomain/xilinx/ |
| H A D | zynqmp-pm-domains.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * ZynqMP Generic PM domain support
5 * Copyright (C) 2015-2019 Xilinx, Inc.
20 #include <linux/firmware/xlnx-zynqmp.h>
27 * struct zynqmp_pm_domain - Wrapper around struct generic_pm_domain
29 * @node_id: PM node ID corresponding to device inside PM domain
30 * @requested: The PM node mapped to the PM domain has been requested
42 * zynqmp_gpd_is_active_wakeup_path() - Check if device is in wakeup source
65 * zynqmp_gpd_power_on() - Power on PM domain
66 * @domain: Generic PM domain
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| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "Enable Zynq MPSoC generic PM domains"
6 depends on PM && ZYNQMP_FIRMWARE
9 Say yes to enable device power management through PM domains
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| /linux/drivers/pmdomain/bcm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "Broadcom PM Domains"
8 select PM_GENERIC_DOMAINS if PM
11 This enables support for the BCM2835 power domains and reset
12 controller. Any usage of power domains by the Raspberry Pi
20 select PM_GENERIC_DOMAINS if PM
22 This enables support for the RPi power domains which can be enabled
29 select PM_GENERIC_DOMAINS if PM
37 select PM_GENERIC_DOMAINS if PM
39 This enables support for the BCM63xx power domains controller on
|
| H A D | bcm2835-power.c | 1 // SPDX-License-Identifier: GPL-2.0+
8 #include <dt-bindings/soc/bcm2835-pm.h>
12 #include <linux/mfd/bcm2835-pm.h>
16 #include <linux/reset-controller.h>
109 #define PM_READ(reg) readl(power->base + (reg))
110 #define PM_WRITE(reg, val) writel(PM_PASSWORD | (val), power->base + (reg))
140 /* PM registers. */
148 struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT]; member
154 void __iomem *base = power->asb; in bcm2835_asb_control()
163 if (power->rpivid_asb) in bcm2835_asb_control()
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| /linux/drivers/pmdomain/amlogic/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "Amlogic PM Domains"
5 tristate "Amlogic Meson Everything-Else Power Domains driver"
7 depends on PM && OF
12 Say yes to expose Amlogic Meson Everything-Else Power Domains as
13 Generic Power Domains.
16 tristate "Amlogic Meson Secure Power Domains driver"
18 depends on PM && OF
25 Say yes to expose Amlogic Meson Secure Power Domains as Generic
26 Power Domains.
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| /linux/Documentation/devicetree/bindings/bus/ |
| H A D | simple-pm-bus.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/bus/simple-pm-bus.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Simple Power-Managed Bus
10 - Geert Uytterhoeven <geert+renesas@glider.be>
13 A Simple Power-Managed Bus is a transparent bus that doesn't need a real
16 However, its bus controller is part of a PM domain, or under the control
17 of a functional clock. Hence, the bus controller's PM domain and/or
19 on-SoC or externally) to function.
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| /linux/drivers/pmdomain/st/ |
| H A D | ste-ux500-pm-domain.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 * Implements PM domains using the generic PM domain for ux500.
18 #include <dt-bindings/arm/ux500_pm_domains.h>
23 * Handle the gating of the PM domain regulator here. in pd_power_off()
25 * Drivers/subsystems handling devices in the PM domain needs to perform in pd_power_off()
26 * register context save/restore from their respective runtime PM in pd_power_off()
27 * callbacks, to be able to enable PM domain gating/ungating. in pd_power_off()
35 * Handle the ungating of the PM domain regulator here. in pd_power_on()
37 * Drivers/subsystems handling devices in the PM domain needs to perform in pd_power_on()
38 * register context save/restore from their respective runtime PM in pd_power_on()
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| /linux/drivers/pmdomain/arm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
6 select PM_GENERIC_DOMAINS if PM
8 This enables support for the SCMI performance domains which can be
18 select PM_GENERIC_DOMAINS if PM
20 This enables support for the SCMI power domains which can be
31 select PM_GENERIC_DOMAINS if PM
33 This enables support for the SCPI power domains which can be
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| /linux/Documentation/devicetree/bindings/soc/bcm/ |
| H A D | brcm,bcm2835-pm.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: BCM2835 PM (Power domains, watchdog)
10 The PM block controls power domains and some reset lines, and includes a
14 - Nicolas Saenz Julienne <nsaenz@kernel.org>
17 - $ref: /schemas/watchdog/watchdog.yaml#
22 - enum:
23 - brcm,bcm2835-pm
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| /linux/drivers/pmdomain/imx/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "i.MX PM Domains"
5 bool "i.MX GPCv2 PM domains"
7 depends on PM
|
| /linux/drivers/pmdomain/qcom/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "Qualcomm PM Domains"
18 be called qcom-cpr
24 QCOM RPMh Power domain driver to support power-domains with
31 depends on PM && OF
36 QCOM RPM Power domain driver to support power-domains with
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| /linux/drivers/cpuidle/ |
| H A D | cpuidle-psci-domain.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * PM domains for CPUs via genpd - managed by cpuidle-psci.
22 #include "cpuidle-psci.h"
34 struct genpd_power_state *state = &pd->states[pd->state_idx]; in psci_pd_power_off()
37 if (!state->data) in psci_pd_power_off()
41 pd_state = state->data; in psci_pd_power_off()
42 psci_set_domain_state(pd, pd->state_idx, *pd_state); in psci_pd_power_off()
52 int ret = -ENOMEM; in psci_pd_init()
62 pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN; in psci_pd_init()
67 * supported, but only during system-wide suspend. in psci_pd_init()
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| H A D | dt_idle_genpd.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * PM domains for CPUs via genpd.
12 #define pr_fmt(fmt) "dt-idle-genpd: " fmt
38 ret = -ENOMEM; in pd_parse_state_nodes()
48 i--; in pd_parse_state_nodes()
49 for (; i >= 0; i--) in pd_parse_state_nodes()
86 pd_free_states(pd->states, pd->state_count); in dt_idle_pd_free()
87 kfree(pd->name); in dt_idle_pd_free()
102 pd->name = kasprintf(GFP_KERNEL, "%pOF", np); in dt_idle_pd_alloc()
103 if (!pd->name) in dt_idle_pd_alloc()
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| /linux/Documentation/trace/ |
| H A D | events-power.rst | 8 - Power state switch which reports events related to suspend (S-states),
9 cpuidle (C-states) and cpufreq (P-states)
10 - System clock related changes
11 - Power domains related changes and transitions
22 -----------------
24 A 'cpu' event class gathers the CPU-related events: cpuidle and
39 Note: the value of '-1' or '4294967295' for state means an exit from the current state,
62 3. Power domains events
64 The power domain events are used for power domains transitions
72 4. PM QoS events
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| /linux/Documentation/devicetree/bindings/dma/ |
| H A D | ti-edma.txt | 8 ------------------------------------------------------------------------------
12 --------------------
13 - compatible: Should be:
14 - "ti,edma3-tpcc" for the channel controller(s) on OMAP,
16 - "ti,k2g-edma3-tpcc", "ti,edma3-tpcc" for the
18 - #dma-cells: Should be set to <2>. The first number is the DMA request
20 - reg: Memory map of eDMA CC
21 - reg-names: "edma3_cc"
22 - interrupts: Interrupt lines for CCINT, MPERR and CCERRINT.
23 - interrupt-names: "edma3_ccint", "edma3_mperr" and "edma3_ccerrint"
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| /linux/Documentation/devicetree/bindings/usb/ |
| H A D | ti,am62-usb.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/usb/ti,am62-usb.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI's AM62 wrapper module for the Synopsys USBSS-DRD controller
10 - Aswath Govindraju <a-govindraju@ti.com>
14 const: ti,am62-usb
19 - description: USB CFG register space
20 - description: USB PHY2 register space
24 power-domains:
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| H A D | ti,j721e-usb.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/usb/ti,j721e-usb.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI wrapper module for the Cadence USBSS-DRD controller
10 - Roger Quadros <rogerq@kernel.org>
15 - const: ti,j721e-usb
16 - items:
17 - const: ti,am64-usb
18 - const: ti,j721e-usb
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| /linux/arch/arm/boot/dts/ti/omap/ |
| H A D | omap4-l4.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 compatible = "ti,omap4-l4-cfg", "simple-pm-bus";
4 power-domains = <&prm_core>;
6 clock-names = "fck";
10 reg-names = "ap", "la", "ia0";
11 #address-cells = <1>;
12 #size-cells = <1>;
22 compatible = "simple-pm-bus";
23 #address-cells = <1>;
24 #size-cells = <1>;
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| /linux/drivers/gpu/drm/i915/ |
| H A D | intel_runtime_pm.c | 2 * Copyright © 2012-2014 Intel Corporation
37 * DOC: runtime pm
47 * domains there's a sizeable amount of indirection required. This file provides
49 * abstract power domains. It then maps those to the actual power wells
62 if (!rpm->debug.class) in init_intel_runtime_pm_wakeref()
63 ref_tracker_dir_init(&rpm->debug, INTEL_REFTRACK_DEAD_COUNT, in init_intel_runtime_pm_wakeref()
70 if (!rpm->available || rpm->no_wakeref_tracking) in track_intel_runtime_pm_wakeref()
73 return intel_ref_tracker_alloc(&rpm->debug); in track_intel_runtime_pm_wakeref()
79 if (!rpm->available || rpm->no_wakeref_tracking) in untrack_intel_runtime_pm_wakeref()
82 intel_ref_tracker_free(&rpm->debug, wakeref); in untrack_intel_runtime_pm_wakeref()
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