/** * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. * * This source file is released under GPL v2 license (no other versions). * See the COPYING file included in the main directory of this source * distribution for the license terms and conditions. * * @File ctamixer.h * * @Brief * This file contains the definition of the Audio Mixer * resource management object. * * @Author Liu Chun * @Date May 21 2008 * */ #ifndef CTAMIXER_H #define CTAMIXER_H #include "ctresource.h" #include #include /* Define the descriptor of a summation node resource */ struct sum { struct rsc rsc; /* Basic resource info */ unsigned char idx[8]; }; /* Define sum resource request description info */ struct sum_desc { unsigned int msr; }; struct sum_mgr { struct rsc_mgr mgr; /* Basic resource manager info */ struct snd_card *card; /* pointer to this card */ spinlock_t mgr_lock; /* request one sum resource */ int (*get_sum)(struct sum_mgr *mgr, const struct sum_desc *desc, struct sum **rsum); /* return one sum resource */ int (*put_sum)(struct sum_mgr *mgr, struct sum *sum); }; /* Constructor and destructor of daio resource manager */ int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr); int sum_mgr_destroy(struct sum_mgr *sum_mgr); /* Define the descriptor of a amixer resource */ struct amixer_rsc_ops; struct amixer { struct rsc rsc; /* Basic resource info */ unsigned char idx[8]; struct rsc *input; /* pointer to a resource acting as source */ struct sum *sum; /* Put amixer output to this summation node */ const struct amixer_rsc_ops *ops; /* AMixer specific operations */ }; struct amixer_rsc_ops { int (*set_input)(struct amixer *amixer, struct rsc *rsc); int (*set_scale)(struct amixer *amixer, unsigned int scale); int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv); int (*set_sum)(struct amixer *amixer, struct sum *sum); int (*commit_write)(struct amixer *amixer); /* Only for interleaved recording */ int (*commit_raw_write)(struct amixer *amixer); int (*setup)(struct amixer *amixer, struct rsc *input, unsigned int scale, struct sum *sum); int (*get_scale)(struct amixer *amixer); }; /* Define amixer resource request description info */ struct amixer_desc { unsigned int msr; }; struct amixer_mgr { struct rsc_mgr mgr; /* Basic resource manager info */ struct snd_card *card; /* pointer to this card */ spinlock_t mgr_lock; /* request one amixer resource */ int (*get_amixer)(struct amixer_mgr *mgr, const struct amixer_desc *desc, struct amixer **ramixer); /* return one amixer resource */ int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer); }; /* Constructor and destructor of amixer resource manager */ int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr); int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr); #endif /* CTAMIXER_H */ root/sound/soc/codecs/Kconfig
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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 /sound/soc/codecs/Kconfig
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 'sound/soc/codecs/Kconfig')