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/linux/include/linux/mtd/
H A Dplatnand.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
7 * Contains all platform NAND related definitions.
18 * struct platform_nand_chip - chip level device structure
26 * @part_probe_types: NULL-terminated array of probe types
40 * struct platform_nand_ctrl - controller level device structure
41 * @probe: platform specific function to probe/setup hardware
42 * @remove: platform specific function to remove/teardown hardware
43 * @dev_ready: platform specific function to read ready/busy pin
44 * @select_chip: platform specific chip select function
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/linux/Documentation/power/
H A Dbasic-pm-debugging.rst21 modes causes the PM core to skip some platform-related callbacks which on ACPI
24 "platform" mode::
26 # echo platform > /sys/power/disk
31 Unfortunately, the "platform" mode of hibernation does not work on some systems
41 If neither "platform" nor "shutdown" hibernation mode works, you will need to
45 ----------------------------
53 - test the freezing of processes
56 - test the freezing of processes and suspending of devices
58 platform
59 - test the freezing of processes, suspending of devices and platform
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/linux/arch/arm/mach-s3c/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
5 source "arch/arm/mach-s3c/Kconfig.s3c64xx"
13 Base platform code for all Samsung SoC based systems
19 Base platform power management code for samsung code
29 int "S3C UART to use for low-level messages"
33 Choice of which UART port to use for the low-level messages,
36 must have been initialised by the boot-loader before use.
43 Samsung platforms, including static platform devices, legacy
64 chip tracking if the platform requires it.
71 Compile in platform device definitions for HSMMC code
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/linux/include/uapi/linux/
H A Dpfrut.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Platform Firmware Runtime Update header
16 * PFRU_IOC_SET_REV - _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int)
19 * * 0 - success
20 * * -EFAULT - fail to read the revision id
21 * * -EINVAL - user provides an invalid revision id
23 * Set the Revision ID for Platform Firmware Runtime Update.
28 * PFRU_IOC_STAGE - _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int)
31 * * 0 - success
32 * * -EINVAL - stage phase returns invalid result
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/linux/Documentation/admin-guide/pm/
H A Dsleep-states.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Sleep states are global low-power states of the entire system in which user
21 Depending on its configuration and the capabilities of the platform it runs on,
28 Suspend-to-Idle
29 ---------------
31 This is a generic, pure software, light-weight variant of system suspend (also
34 I/O devices into low-power states (possibly lower-power than available in the
38 The system is woken up from this state by in-band interrupts, so theoretically
43 or :ref:`suspend-to-RAM <s2ram>`, or it can be used in addition to any of the
50 -------
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H A Dintel-speed-select.rst1 .. SPDX-License-Identifier: GPL-2.0
14 - https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-artic…
15 - https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enha…
19 dynamically without pre-configuring via BIOS setup options. This dynamic
29 intel-speed-select configuration tool
32 Most Linux distribution packages may include the "intel-speed-select" tool. If not,
38 # cd tools/power/x86/intel-speed-select/
43 ------------
47 # intel-speed-select --help
49 The top-level help describes arguments and features. Notice that there is a
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H A Dintel_idle.rst1 .. SPDX-License-Identifier: GPL-2.0
19 Nehalem and later generations of Intel processors, but the level of support for
21 processor model and may also depend on information coming from the platform
24 Documentation/admin-guide/pm/cpuidle.rst if you have not done that yet.]
28 processor's functional blocks into low-power states. That instruction takes two
34 via the platform firmware configuration menu) or which do not support that
38 only way to pass early-configuration-time parameters to it is via the kernel
54 The C1 demotion feature involves the platform firmware demoting deep
55 C-state requests from the OS (e.g., C6 requests) to C1. The idea is that
56 firmware monitors CPU wake-up rate, and if it is higher than a
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/linux/arch/hexagon/kernel/
H A Dirq_cpu.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * First-level interrupt controller model for Hexagon.
5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
14 __vmintop_locdis((long) data->irq); in mask_irq()
24 __vmintop_locen((long) data->irq); in unmask_irq()
30 __vmintop_globen((long) data->irq); in eoi_irq()
34 * if this is absent, then an -ENXIO error is returned to the
54 * The hexagon core comes with a first-level interrupt controller
57 * macro cells that provide one or more second-level interrupt
58 * controllers that are cascaded into one or more of the first-level
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/linux/drivers/platform/x86/lenovo/
H A Dwmi-gamezone.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * The GameZone WMI interface provides platform profile and fan curve settings
23 #include "wmi-events.h"
24 #include "wmi-gamezone.h"
25 #include "wmi-helpers.h"
26 #include "wmi-other.h"
28 #define LENOVO_GAMEZONE_GUID "887B54E3-DDDC-4B2C-8B88-68A26A8835D0"
55 * lwmi_gz_mode_call() - Call method for lenovo-wmi-other driver notifier.
57 * @nb: The notifier_block registered to lenovo-wmi-other driver.
75 scoped_guard(spinlock, &priv->gz_mode_lock) { in lwmi_gz_mode_call()
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/linux/Documentation/devicetree/bindings/opp/
H A Dopp-v2-base.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/opp/opp-v2-base.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Viresh Kumar <viresh.kumar@linaro.org>
13 Devices work at voltage-current-frequency combinations and some implementations
25 pattern: '^opp-table(-[a-z0-9]+)?$'
27 opp-shared:
36 '^opp(-?[0-9]+)*$':
39 One or more OPP nodes describing voltage-current-frequency combinations.
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/linux/sound/soc/sof/amd/
H A DKconfig1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
29 This option is not user-selectable but automatically handled by
30 'select' statements at a higher level
38 Select this option for SOF support on AMD Renoir platform
47 on AMD Vangogh platform.
57 Select this option for SOF support on AMD Rembrandt platform
65 This option is not user-selectable but automatically handled by
66 'select' statements at a higher level
85 tristate "SOF support for ACP6.3 platform"
93 Say Y if you want to enable SOF on ACP6.3 based platform.
/linux/Documentation/driver-api/thermal/
H A Dintel_dptf.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Intel(R) Dynamic Platform and Thermal Framework Sysfs Interface
12 ------------
14 Intel(R) Dynamic Platform and Thermal Framework (DPTF) is a platform
15 level hardware/software solution for power and thermal management.
21 Since it is a platform level framework, this has several components.
26 "Linux Thermal Daemon" to read platform specific thermal and power
31 ----------------------------
33 :file:`/sys/bus/platform/devices/<N>/uuids`, where <N>
43 "42A441D6-AE6A-462b-A84B-4A8CE79027D3" : Passive 1
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/linux/arch/powerpc/include/asm/
H A Dpmac_pfunc.h1 /* SPDX-License-Identifier: GPL-2.0 */
20 * Arguments to a platform function call.
42 * ends with an end() call. This allows the low level driver to implement
43 * locking policy or per-function instance data.
116 * Drivers who expose platform functions register at init time, this
117 * causes the platform functions for that device node to be parsed in
119 * partially public so a driver can walk the list of platform functions
135 /* The name is the "xxx" in "platform-do-xxx", this is how
136 * platform functions are identified by this code. Some functions
160 * For platform functions that are interrupts, one can register
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/linux/arch/arm/include/asm/
H A Dmcpm.h1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Copyright: (C) 2012-2013 Linaro Limited
33 * Platform specific code should use this symbol to set up secondary
40 * branch once it is ready to re-enter the kernel using ptr, or NULL if it
59 * mcpm_is_available - returns whether MCPM is initialized and available
66 * mcpm_cpu_power_up - make given CPU in given cluster runable
87 * mcpm_cpu_power_down - power the calling CPU down
92 * then the cluster is prepared for power-down too.
96 * On success this does not return. Re-entry in the kernel is expected
103 * mcpm_wait_for_cpu_powerdown() subsequently returns non-zero for the
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/linux/tools/power/acpi/man/
H A Dpfrut.85 pfrut \- Platform Firmware Runtime Update and Telemetry tool
11 The PFRUT(Platform Firmware Runtime Update and Telemetry) kernel interface is designed
16 interact with the platform firmware interface defined in the
31 .B \f[B]\-h\f[R], \f[B]\-\-help\f[R]
34 .B \f[B]\-l\f[R], \f[B]\-\-load\f[R]
39 .B \f[B]\-s\f[R], \f[B]\-\-stage\f[R]
43 .B \f[B]\-a\f[R], \f[B]\-\-activate\f[R]
46 .B \f[B]\-u\f[R], \f[B]\-\-update\f[R]
49 .B \f[B]\-q\f[R], \f[B]\-\-query\f[R]
52 .B \f[B]\-d\f[R], \f[B]\-\-setrev\f[R]
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/linux/sound/soc/sof/
H A Dcore.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
15 #include "sof-priv.h"
16 #include "sof-of-dev.h"
43 static int override_ipc_type = -1;
45 MODULE_PARM_DESC(ipc_type, "Force SOF IPC type. 0 - IPC3, 1 - IPC4");
57 "Set the IPC timeout value in ms (0 to use the platform default)");
60 "Set the DSP boot timeout value in ms (0 to use the platform default)");
63 /* SOF defaults if not provided by the platform in ms */
68 * sof_debug_check_flag - check if a given flag(s) is set in sof_core_debug
98 {SOF_IPC_PANIC_PLATFORM, "platform init failed"},
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/linux/drivers/platform/chrome/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
7 bool "Platform support for Chrome hardware"
10 Say Y here to get to see options for platform support for
26 If you have an ACPI-compatible Chromebook, say Y or M here.
47 The range of memory used is 0xf00000-0x1000000, traditionally
73 devices that have multiple drop-in options for one component.
94 EC through an I2C bus. This uses a simple byte-level protocol with
103 through rpmsg. This uses a simple byte-level protocol with a
104 checksum. Also since there's no addition EC-to-host interrupt, this
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/linux/include/linux/
H A Dplatform_device.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * platform_device.h - generic, centralized driver model
5 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
7 * See Documentation/driver-api/driver-model/ for more information.
15 #define PLATFORM_DEVID_NONE (-1)
16 #define PLATFORM_DEVID_AUTO (-2)
47 #define platform_get_device_id(pdev) ((pdev)->id_entry)
49 #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
83 return ERR_PTR(-EINVAL); in devm_platform_get_and_ioremap_resource()
91 return ERR_PTR(-EINVAL); in devm_platform_ioremap_resource()
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H A Dscmi_protocol.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2018-2021 ARM Ltd.
21 * struct scmi_revision_info - version information structure
30 * @impl_ver: A vendor-specific implementation version.
32 * @sub_vendor_id: A sub-vendor identifier(Null terminated ASCII string)
87 * struct scmi_clk_proto_ops - represents the various operations provided
133 * struct scmi_perf_proto_ops - represent
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/linux/drivers/acpi/dptf/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
4 bool "Intel DPTF (Dynamic Platform and Thermal Framework) Support"
7 Intel Dynamic Platform and Thermal Framework (DPTF) is a platform
8 level hardware/software solution for power and thermal management.
17 tristate "Platform Power DPTF Participant"
20 This driver adds support for Dynamic Platform and Thermal Framework
21 (DPTF) Platform Power Participant device (INT3407) support.
22 This participant is responsible for exposing platform telemetry:
36 This driver adds support for Dynamic Platform and Thermal Framework
/linux/Documentation/admin-guide/laptops/
H A Dthinkpad-acpi.rst9 - 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
22 2.6.22, and release 0.14. It was moved to drivers/platform/x86 for
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 ------
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/linux/Documentation/arch/x86/
H A Dintel_txt.rst6 Technology (Intel(R) TXT), defines platform-level enhancements that
13 - Provides dynamic root of trust for measurement (DRTM)
14 - Data protection in case of improper shutdown
15 - Measurement and verification of launched environment
18 non-vPro systems. It is currently available on desktop systems
30 - LinuxTAG 2008:
31 http://www.linuxtag.org/2008/en/conf/events/vp-donnerstag.html
33 - TRUST2008:
34 http://www.trust-conference.eu/downloads/Keynote-Speakers/
35 3_David-Grawrock_The-Front-Door-of-Trusted-Computing.pdf
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/linux/drivers/base/
H A Dplatform.c1 // SPDX-License-Identifier: GPL-2.0
3 * platform.c - platform 'pseudo' bus for legacy devices
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
8 * Please see Documentation/driver-api/driver-model/platform.rst for more
20 #include <linux/dma-mapping.h>
28 #include <linux/clk/clk-conf.h>
34 #include <linux/dma-map-ops.h>
43 .init_name = "platform",
48 * platform_get_resource - get a resource for a device
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/linux/Documentation/devicetree/bindings/net/bluetooth/
H A Dmediatek,bluetooth.txt13 - compatible: Must be
14 "mediatek,mt7663u-bluetooth": for MT7663U device
15 "mediatek,mt7668u-bluetooth": for MT7668U device
16 - vcc-supply: Main voltage regulator
18 If the pin controller on the platform can support both pinmux and GPIO
19 control such as the most of MediaTek platform. Please use below properties.
21 - pinctrl-names: Should be "default", "runtime"
22 - pinctrl-0: Should contain UART RXD low when the device is powered up to
24 - pinctrl-1: Should contain UART mode pin ctrl
26 Else, the pin controller on the platform only can support pinmux control and
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/linux/arch/sparc/kernel/
H A Dmdesc.c1 // SPDX-License-Identifier: GPL-2.0
26 /* Unlike the OBP device tree, the machine description is a full-on
107 {"virtual-device-port", get_vdev_port_node_info,
109 {"domain-services-port", get_ds_port_node_info,
153 BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1)); in mdesc_handle_init()
156 INIT_LIST_HEAD(&hp->list); in mdesc_handle_init()
157 hp->self_base = base; in mdesc_handle_init()
158 refcount_set(&hp->refcnt, 1); in mdesc_handle_init()
159 hp->handle_size = handle_size; in mdesc_handle_init()
168 handle_size = (sizeof(struct mdesc_handle) - in mdesc_memblock_alloc()
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