/* * acpi_drivers.h ($Revision: 31 $) * * Copyright (C) 2001, 2002 Andy Grover * Copyright (C) 2001, 2002 Paul Diefenbaugh * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __ACPI_DRIVERS_H__ #define __ACPI_DRIVERS_H__ #define ACPI_MAX_STRING 80 /* * Please update drivers/acpi/debug.c and Documentation/acpi/debug.txt * if you add to this list. */ #define ACPI_BUS_COMPONENT 0x00010000 #define ACPI_AC_COMPONENT 0x00020000 #define ACPI_BATTERY_COMPONENT 0x00040000 #define ACPI_BUTTON_COMPONENT 0x00080000 #define ACPI_SBS_COMPONENT 0x00100000 #define ACPI_FAN_COMPONENT 0x00200000 #define ACPI_PCI_COMPONENT 0x00400000 #define ACPI_POWER_COMPONENT 0x00800000 #define ACPI_CONTAINER_COMPONENT 0x01000000 #define ACPI_SYSTEM_COMPONENT 0x02000000 #define ACPI_THERMAL_COMPONENT 0x04000000 #define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000 #define ACPI_VIDEO_COMPONENT 0x10000000 #define ACPI_PROCESSOR_COMPONENT 0x20000000 /* * _HID definitions * HIDs must conform to ACPI spec(6.1.4) * Linux specific HIDs do not apply to this and begin with LNX: */ #define ACPI_POWER_HID "LNXPOWER" #define ACPI_PROCESSOR_OBJECT_HID "LNXCPU" #define ACPI_SYSTEM_HID "LNXSYSTM" #define ACPI_THERMAL_HID "LNXTHERM" #define ACPI_BUTTON_HID_POWERF "LNXPWRBN" #define ACPI_BUTTON_HID_SLEEPF "LNXSLPBN" #define ACPI_VIDEO_HID "LNXVIDEO" #define ACPI_BAY_HID "LNXIOBAY" #define ACPI_DOCK_HID "LNXDOCK" /* Quirk for broken IBM BIOSes */ #define ACPI_SMBUS_IBM_HID "SMBUSIBM" /* * For fixed hardware buttons, we fabricate acpi_devices with HID * ACPI_BUTTON_HID_POWERF or ACPI_BUTTON_HID_SLEEPF. Fixed hardware * signals only an event; it doesn't supply a notification value. * To allow drivers to treat notifications from fixed hardware the * same as those from real devices, we turn the events into this * notification value. */ #define ACPI_FIXED_HARDWARE_EVENT 0x100 /* -------------------------------------------------------------------------- PCI -------------------------------------------------------------------------- */ /* ACPI PCI Interrupt Link (pci_link.c) */ int acpi_irq_penalty_init(void); int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering, int *polarity, char **name); int acpi_pci_link_free_irq(acpi_handle handle); /* ACPI PCI Device Binding (pci_bind.c) */ struct pci_bus; struct pci_dev *acpi_get_pci_dev(acpi_handle); /* Arch-defined function to add a bus to the system */ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root); #ifdef CONFIG_X86 void pci_acpi_crs_quirks(void); #else static inline void pci_acpi_crs_quirks(void) { } #endif /* -------------------------------------------------------------------------- Processor -------------------------------------------------------------------------- */ #define ACPI_PROCESSOR_LIMIT_NONE 0x00 #define ACPI_PROCESSOR_LIMIT_INCREMENT 0x01 #define ACPI_PROCESSOR_LIMIT_DECREMENT 0x02 /*-------------------------------------------------------------------------- Dock Station -------------------------------------------------------------------------- */ #ifdef CONFIG_ACPI_DOCK extern int is_dock_device(struct acpi_device *adev); #else static inline int is_dock_device(struct acpi_device *adev) { return 0; } #endif /* CONFIG_ACPI_DOCK */ #endif /*__ACPI_DRIVERS_H__*/ space:mode:
authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2017-02-03 14:18:39 -0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-04 00:11:08 +0100
commit6e978b22efa1db9f6e71b24440b5f1d93e968ee3 (patch)
treec666f7a26b860674848949e39a610222b0723f89 /include/sound/hda_chmap.h
parent3c223c19aea85d3dda1416c187915f4a30b04b1f (diff)
cpufreq: intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/sound/hda_chmap.h')