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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-28 20:02:17 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
- Add new P-state driver for AMD processors (Huang Rui). - Fix initialization of min and max frequency QoS requests in the cpufreq core (Rafael Wysocki). - Fix EPP handling on Alder Lake in intel_pstate (Srinivas Pandruvada). - Make intel_pstate update cpuinfo.max_freq when notified of HWP capabilities changes and drop a redundant function call from that driver (Rafael Wysocki). - Improve IRQ support in the Qcom cpufreq driver (Ard Biesheuvel, Stephen Boyd, Vladimir Zapolskiy). - Fix double devm_remap() in the Mediatek cpufreq driver (Hector Yuan). - Introduce thermal pressure helpers for cpufreq CPU cooling (Lukasz Luba). - Make cpufreq use default_groups in kobj_type (Greg Kroah-Hartman). - Make cpuidle use default_groups in kobj_type (Greg Kroah-Hartman). - Fix two comments in cpuidle code (Jason Wang, Yang Li). - Allow model-specific normal EPB value to be used in the intel_epb sysfs attribute handling code (Srinivas Pandruvada). - Simplify locking in pm_runtime_put_suppliers() (Rafael Wysocki). - Add safety net to supplier device release in the runtime PM core code (Rafael Wysocki). - Capture device status before disabling runtime PM for it (Rafael Wysocki). - Add new macros for declaring PM operations to allow drivers to avoid guarding them with CONFIG_PM #ifdefs or __maybe_unused and update some drivers to use these macros (Paul Cercueil). - Allow ACPI hardware signature to be honoured during restore from hibernation (David Woodhouse). - Update outdated operating performance points (OPP) documentation (Tang Yizhou). - Reduce log severity for informative message regarding frequency transition failures in devfreq (Tzung-Bi Shih). - Add DRAM frequency controller devfreq driver for Allwinner sunXi SoCs (Samuel Holland). - Add missing COMMON_CLK dependency to sun8i devfreq driver (Arnd Bergmann). - Add support for new layout of Psys PowerLimit Register on SPR to the Intel RAPL power capping driver (Zhang Rui). - Fix typo in a comment in idle_inject.c (Jason Wang). - Remove unused function definition from the DTPM (Dynamit Thermal Power Management) power capping framework (Daniel Lezcano). - Reduce DTPM trace verbosity (Daniel Lezcano). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmHcgkgSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxs34P/3kFhRk7qrwEekx6F11im6caLKT9+Qap PuGVqfTbK7TupVQDVGFBEjTjgKY7Ph7Fcr4bqn6wvNOp96cjXyOSk/c1fcpS3Bpr b1PYsFsb9diNKE462sGGYClyCT3X5qQqtpxzOl3g4I1PWKTC1mKFm4Jm2m6S6cFq DKhsgYKFzQSZNb1wJM4JjHS9c3BRygqp4nfEAmifu5b9tLZf7stWnFHhbGq63M9m OwHOrEEnzhf4pOXGZTvIXeczgE6IcuDdlGkIg7XMHnmKSNvj1HqhEgi2lfSRb98z 5eI4S6JymCJGVK+gr8iVCq1iJ+LKqV3YPXRqvI35/+NqIKYxMt2ZivQQf5s3aQLe 26gUulD3O6Pz5tMlwcDElD4/tcClfg35PCD/VzpRR8TAo8vLBb63kZ5v6+HM34ZJ 6QbLTNZJTnGmEqxMccUxP+HhZz8ssqpLAC+R2sE5yXbNpIZq8CbPiGb65RGiX3SG CmRKqH/xQVNKBYP0ChjmUyhKcBxOnx1Xu8AhsN7gRAy0aht7j7OdjTnJuGiX6gu3 Q5WxvVvkekyfhuFQ5TST9y/fzvMJWzeaA6GhVIr6RoBmshNQGTb0H4HXARxS3Ah5 qjd7ao7BFLa898FCHaHIpmFWp0wF5iljwCJQVP3I2qUpPvDJxEtsxc4CF/AZzyNR VudoFqLoIV5C =1egI -----END PGP SIGNATURE----- Merge tag 'pm-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "The most signigicant change here is the addition of a new cpufreq 'P-state' driver for AMD processors as a better replacement for the venerable acpi-cpufreq driver. There are also other cpufreq updates (in the core, intel_pstate, ARM drivers), PM core updates (mostly related to adding new macros for declaring PM operations which should make the lives of driver developers somewhat easier), and a bunch of assorted fixes and cleanups. Summary: - Add new P-state driver for AMD processors (Huang Rui). - Fix initialization of min and max frequency QoS requests in the cpufreq core (Rafael Wysocki). - Fix EPP handling on Alder Lake in intel_pstate (Srinivas Pandruvada). - Make intel_pstate update cpuinfo.max_freq when notified of HWP capabilities changes and drop a redundant function call from that driver (Rafael Wysocki). - Improve IRQ support in the Qcom cpufreq driver (Ard Biesheuvel, Stephen Boyd, Vladimir Zapolskiy). - Fix double devm_remap() in the Mediatek cpufreq driver (Hector Yuan). - Introduce thermal pressure helpers for cpufreq CPU cooling (Lukasz Luba). - Make cpufreq use default_groups in kobj_type (Greg Kroah-Hartman). - Make cpuidle use default_groups in kobj_type (Greg Kroah-Hartman). - Fix two comments in cpuidle code (Jason Wang, Yang Li). - Allow model-specific normal EPB value to be used in the intel_epb sysfs attribute handling code (Srinivas Pandruvada). - Simplify locking in pm_runtime_put_suppliers() (Rafael Wysocki). - Add safety net to supplier device release in the runtime PM core code (Rafael Wysocki). - Capture device status before disabling runtime PM for it (Rafael Wysocki). - Add new macros for declaring PM operations to allow drivers to avoid guarding them with CONFIG_PM #ifdefs or __maybe_unused and update some drivers to use these macros (Paul Cercueil). - Allow ACPI hardware signature to be honoured during restore from hibernation (David Woodhouse). - Update outdated operating performance points (OPP) documentation (Tang Yizhou). - Reduce log severity for informative message regarding frequency transition failures in devfreq (Tzung-Bi Shih). - Add DRAM frequency controller devfreq driver for Allwinner sunXi SoCs (Samuel Holland). - Add missing COMMON_CLK dependency to sun8i devfreq driver (Arnd Bergmann). - Add support for new layout of Psys PowerLimit Register on SPR to the Intel RAPL power capping driver (Zhang Rui). - Fix typo in a comment in idle_inject.c (Jason Wang). - Remove unused function definition from the DTPM (Dynamit Thermal Power Management) power capping framework (Daniel Lezcano). - Reduce DTPM trace verbosity (Daniel Lezcano)" * tag 'pm-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits) x86, sched: Fix undefined reference to init_freq_invariance_cppc() build error cpufreq: amd-pstate: Fix Kconfig dependencies for AMD P-State cpufreq: amd-pstate: Fix struct amd_cpudata kernel-doc comment cpuidle: use default_groups in kobj_type x86: intel_epb: Allow model specific normal EPB value MAINTAINERS: Add AMD P-State driver maintainer entry Documentation: amd-pstate: Add AMD P-State driver introduction cpufreq: amd-pstate: Add AMD P-State performance attributes cpufreq: amd-pstate: Add AMD P-State frequencies attributes cpufreq: amd-pstate: Add boost mode support for AMD P-State cpufreq: amd-pstate: Add trace for AMD P-State module cpufreq: amd-pstate: Introduce the support for the processors with shared memory solution cpufreq: amd-pstate: Add fast switch function for AMD P-State cpufreq: amd-pstate: Introduce a new AMD P-State driver to support future processors ACPI: CPPC: Add CPPC enable register function ACPI: CPPC: Check present CPUs for determining _CPC is valid ACPI: CPPC: Implement support for SystemIO registers x86/msr: Add AMD CPPC MSR definitions x86/cpufeatures: Add AMD Collaborative Processor Performance Control feature flag cpufreq: use default_groups in kobj_type ...
1085 lines
26 KiB
C
1085 lines
26 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* sleep.c - ACPI sleep support.
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*
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* Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
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* Copyright (c) 2004 David Shaohua Li <shaohua.li@intel.com>
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* Copyright (c) 2000-2003 Patrick Mochel
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* Copyright (c) 2003 Open Source Development Lab
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*/
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#define pr_fmt(fmt) "ACPI: PM: " fmt
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#include <linux/delay.h>
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#include <linux/irq.h>
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#include <linux/dmi.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <linux/suspend.h>
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#include <linux/reboot.h>
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#include <linux/acpi.h>
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#include <linux/module.h>
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#include <linux/syscore_ops.h>
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#include <asm/io.h>
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#include <trace/events/power.h>
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#include "internal.h"
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#include "sleep.h"
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/*
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* Some HW-full platforms do not have _S5, so they may need
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* to leverage efi power off for a shutdown.
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*/
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bool acpi_no_s5;
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static u8 sleep_states[ACPI_S_STATE_COUNT];
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static void acpi_sleep_tts_switch(u32 acpi_state)
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{
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acpi_status status;
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status = acpi_execute_simple_method(NULL, "\\_TTS", acpi_state);
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if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
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/*
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* OS can't evaluate the _TTS object correctly. Some warning
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* message will be printed. But it won't break anything.
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*/
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pr_notice("Failure in evaluating _TTS object\n");
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}
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}
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static int tts_notify_reboot(struct notifier_block *this,
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unsigned long code, void *x)
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{
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acpi_sleep_tts_switch(ACPI_STATE_S5);
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return NOTIFY_DONE;
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}
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static struct notifier_block tts_notifier = {
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.notifier_call = tts_notify_reboot,
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.next = NULL,
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.priority = 0,
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};
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static int acpi_sleep_prepare(u32 acpi_state)
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{
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#ifdef CONFIG_ACPI_SLEEP
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unsigned long acpi_wakeup_address;
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/* do we have a wakeup address for S2 and S3? */
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if (acpi_state == ACPI_STATE_S3) {
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acpi_wakeup_address = acpi_get_wakeup_address();
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if (!acpi_wakeup_address)
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return -EFAULT;
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acpi_set_waking_vector(acpi_wakeup_address);
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}
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#endif
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pr_info("Preparing to enter system sleep state S%d\n", acpi_state);
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acpi_enable_wakeup_devices(acpi_state);
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acpi_enter_sleep_state_prep(acpi_state);
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return 0;
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}
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bool acpi_sleep_state_supported(u8 sleep_state)
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{
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acpi_status status;
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u8 type_a, type_b;
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status = acpi_get_sleep_type_data(sleep_state, &type_a, &type_b);
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return ACPI_SUCCESS(status) && (!acpi_gbl_reduced_hardware
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|| (acpi_gbl_FADT.sleep_control.address
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&& acpi_gbl_FADT.sleep_status.address));
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}
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#ifdef CONFIG_ACPI_SLEEP
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static u32 acpi_target_sleep_state = ACPI_STATE_S0;
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u32 acpi_target_system_state(void)
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{
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return acpi_target_sleep_state;
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}
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EXPORT_SYMBOL_GPL(acpi_target_system_state);
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static bool pwr_btn_event_pending;
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/*
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* The ACPI specification wants us to save NVS memory regions during hibernation
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* and to restore them during the subsequent resume. Windows does that also for
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* suspend to RAM. However, it is known that this mechanism does not work on
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* all machines, so we allow the user to disable it with the help of the
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* 'acpi_sleep=nonvs' kernel command line option.
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*/
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static bool nvs_nosave;
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void __init acpi_nvs_nosave(void)
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{
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nvs_nosave = true;
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}
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/*
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* The ACPI specification wants us to save NVS memory regions during hibernation
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* but says nothing about saving NVS during S3. Not all versions of Windows
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* save NVS on S3 suspend either, and it is clear that not all systems need
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* NVS to be saved at S3 time. To improve suspend/resume time, allow the
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* user to disable saving NVS on S3 if their system does not require it, but
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* continue to save/restore NVS for S4 as specified.
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*/
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static bool nvs_nosave_s3;
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void __init acpi_nvs_nosave_s3(void)
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{
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nvs_nosave_s3 = true;
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}
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static int __init init_nvs_save_s3(const struct dmi_system_id *d)
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{
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nvs_nosave_s3 = false;
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return 0;
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}
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/*
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* ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
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* user to request that behavior by using the 'acpi_old_suspend_ordering'
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* kernel command line option that causes the following variable to be set.
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*/
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static bool old_suspend_ordering;
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void __init acpi_old_suspend_ordering(void)
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{
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old_suspend_ordering = true;
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}
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static int __init init_old_suspend_ordering(const struct dmi_system_id *d)
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{
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acpi_old_suspend_ordering();
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return 0;
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}
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static int __init init_nvs_nosave(const struct dmi_system_id *d)
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{
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acpi_nvs_nosave();
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return 0;
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}
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bool acpi_sleep_default_s3;
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static int __init init_default_s3(const struct dmi_system_id *d)
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{
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acpi_sleep_default_s3 = true;
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return 0;
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}
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static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
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{
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.callback = init_old_suspend_ordering,
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.ident = "Abit KN9 (nForce4 variant)",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "http://www.abit.com.tw/"),
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DMI_MATCH(DMI_BOARD_NAME, "KN9 Series(NF-CK804)"),
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},
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},
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{
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.callback = init_old_suspend_ordering,
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.ident = "HP xw4600 Workstation",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
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DMI_MATCH(DMI_PRODUCT_NAME, "HP xw4600 Workstation"),
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},
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},
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{
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.callback = init_old_suspend_ordering,
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.ident = "Asus Pundit P1-AH2 (M2N8L motherboard)",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTek Computer INC."),
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DMI_MATCH(DMI_BOARD_NAME, "M2N8L"),
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},
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},
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{
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.callback = init_old_suspend_ordering,
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.ident = "Panasonic CF51-2L",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR,
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"Matsushita Electric Industrial Co.,Ltd."),
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DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-FW41E_H",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW41E_H"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-FW21E",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21E"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-FW21M",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21M"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VPCEB17FX",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB17FX"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-SR11M",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR11M"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Everex StepNote Series",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Everex Systems, Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Everex StepNote Series"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VPCEB1Z1E",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1Z1E"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-NW130D",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NW130D"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VPCCW29FX",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VPCCW29FX"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Averatec AV1020-ED2",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "AVERATEC"),
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DMI_MATCH(DMI_PRODUCT_NAME, "1000 Series"),
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},
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},
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{
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.callback = init_old_suspend_ordering,
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.ident = "Asus A8N-SLI DELUXE",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
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DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI DELUXE"),
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},
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},
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{
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.callback = init_old_suspend_ordering,
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.ident = "Asus A8N-SLI Premium",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
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DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI Premium"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-SR26GN_P",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR26GN_P"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VPCEB1S1E",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1S1E"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Sony Vaio VGN-FW520F",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
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DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW520F"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Asus K54C",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "K54C"),
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},
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},
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{
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.callback = init_nvs_nosave,
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.ident = "Asus K54HR",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "K54HR"),
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},
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},
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{
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.callback = init_nvs_save_s3,
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.ident = "Asus 1025C",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "1025C"),
|
|
},
|
|
},
|
|
/*
|
|
* https://bugzilla.kernel.org/show_bug.cgi?id=189431
|
|
* Lenovo G50-45 is a platform later than 2012, but needs nvs memory
|
|
* saving during S3.
|
|
*/
|
|
{
|
|
.callback = init_nvs_save_s3,
|
|
.ident = "Lenovo G50-45",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
|
|
},
|
|
},
|
|
/*
|
|
* ThinkPad X1 Tablet(2016) cannot do suspend-to-idle using
|
|
* the Low Power S0 Idle firmware interface (see
|
|
* https://bugzilla.kernel.org/show_bug.cgi?id=199057).
|
|
*/
|
|
{
|
|
.callback = init_default_s3,
|
|
.ident = "ThinkPad X1 Tablet(2016)",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "20GGA00L00"),
|
|
},
|
|
},
|
|
{},
|
|
};
|
|
|
|
static bool ignore_blacklist;
|
|
|
|
void __init acpi_sleep_no_blacklist(void)
|
|
{
|
|
ignore_blacklist = true;
|
|
}
|
|
|
|
static void __init acpi_sleep_dmi_check(void)
|
|
{
|
|
if (ignore_blacklist)
|
|
return;
|
|
|
|
if (dmi_get_bios_year() >= 2012)
|
|
acpi_nvs_nosave_s3();
|
|
|
|
dmi_check_system(acpisleep_dmi_table);
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_freeze - Disable the GPEs and suspend EC transactions.
|
|
*/
|
|
static int acpi_pm_freeze(void)
|
|
{
|
|
acpi_disable_all_gpes();
|
|
acpi_os_wait_events_complete();
|
|
acpi_ec_block_transactions();
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
|
|
*/
|
|
static int acpi_pm_pre_suspend(void)
|
|
{
|
|
acpi_pm_freeze();
|
|
return suspend_nvs_save();
|
|
}
|
|
|
|
/**
|
|
* __acpi_pm_prepare - Prepare the platform to enter the target state.
|
|
*
|
|
* If necessary, set the firmware waking vector and do arch-specific
|
|
* nastiness to get the wakeup code to the waking vector.
|
|
*/
|
|
static int __acpi_pm_prepare(void)
|
|
{
|
|
int error = acpi_sleep_prepare(acpi_target_sleep_state);
|
|
if (error)
|
|
acpi_target_sleep_state = ACPI_STATE_S0;
|
|
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_prepare - Prepare the platform to enter the target sleep
|
|
* state and disable the GPEs.
|
|
*/
|
|
static int acpi_pm_prepare(void)
|
|
{
|
|
int error = __acpi_pm_prepare();
|
|
if (!error)
|
|
error = acpi_pm_pre_suspend();
|
|
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_finish - Instruct the platform to leave a sleep state.
|
|
*
|
|
* This is called after we wake back up (or if entering the sleep state
|
|
* failed).
|
|
*/
|
|
static void acpi_pm_finish(void)
|
|
{
|
|
struct acpi_device *pwr_btn_adev;
|
|
u32 acpi_state = acpi_target_sleep_state;
|
|
|
|
acpi_ec_unblock_transactions();
|
|
suspend_nvs_free();
|
|
|
|
if (acpi_state == ACPI_STATE_S0)
|
|
return;
|
|
|
|
pr_info("Waking up from system sleep state S%d\n", acpi_state);
|
|
acpi_disable_wakeup_devices(acpi_state);
|
|
acpi_leave_sleep_state(acpi_state);
|
|
|
|
/* reset firmware waking vector */
|
|
acpi_set_waking_vector(0);
|
|
|
|
acpi_target_sleep_state = ACPI_STATE_S0;
|
|
|
|
acpi_resume_power_resources();
|
|
|
|
/* If we were woken with the fixed power button, provide a small
|
|
* hint to userspace in the form of a wakeup event on the fixed power
|
|
* button device (if it can be found).
|
|
*
|
|
* We delay the event generation til now, as the PM layer requires
|
|
* timekeeping to be running before we generate events. */
|
|
if (!pwr_btn_event_pending)
|
|
return;
|
|
|
|
pwr_btn_event_pending = false;
|
|
pwr_btn_adev = acpi_dev_get_first_match_dev(ACPI_BUTTON_HID_POWERF,
|
|
NULL, -1);
|
|
if (pwr_btn_adev) {
|
|
pm_wakeup_event(&pwr_btn_adev->dev, 0);
|
|
acpi_dev_put(pwr_btn_adev);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_start - Start system PM transition.
|
|
*/
|
|
static void acpi_pm_start(u32 acpi_state)
|
|
{
|
|
acpi_target_sleep_state = acpi_state;
|
|
acpi_sleep_tts_switch(acpi_target_sleep_state);
|
|
acpi_scan_lock_acquire();
|
|
}
|
|
|
|
/**
|
|
* acpi_pm_end - Finish up system PM transition.
|
|
*/
|
|
static void acpi_pm_end(void)
|
|
{
|
|
acpi_turn_off_unused_power_resources();
|
|
acpi_scan_lock_release();
|
|
/*
|
|
* This is necessary in case acpi_pm_finish() is not called during a
|
|
* failing transition to a sleep state.
|
|
*/
|
|
acpi_target_sleep_state = ACPI_STATE_S0;
|
|
acpi_sleep_tts_switch(acpi_target_sleep_state);
|
|
}
|
|
#else /* !CONFIG_ACPI_SLEEP */
|
|
#define sleep_no_lps0 (1)
|
|
#define acpi_target_sleep_state ACPI_STATE_S0
|
|
#define acpi_sleep_default_s3 (1)
|
|
static inline void acpi_sleep_dmi_check(void) {}
|
|
#endif /* CONFIG_ACPI_SLEEP */
|
|
|
|
#ifdef CONFIG_SUSPEND
|
|
static u32 acpi_suspend_states[] = {
|
|
[PM_SUSPEND_ON] = ACPI_STATE_S0,
|
|
[PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
|
|
[PM_SUSPEND_MEM] = ACPI_STATE_S3,
|
|
[PM_SUSPEND_MAX] = ACPI_STATE_S5
|
|
};
|
|
|
|
/**
|
|
* acpi_suspend_begin - Set the target system sleep state to the state
|
|
* associated with given @pm_state, if supported.
|
|
*/
|
|
static int acpi_suspend_begin(suspend_state_t pm_state)
|
|
{
|
|
u32 acpi_state = acpi_suspend_states[pm_state];
|
|
int error;
|
|
|
|
error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
|
|
if (error)
|
|
return error;
|
|
|
|
if (!sleep_states[acpi_state]) {
|
|
pr_err("ACPI does not support sleep state S%u\n", acpi_state);
|
|
return -ENOSYS;
|
|
}
|
|
if (acpi_state > ACPI_STATE_S1)
|
|
pm_set_suspend_via_firmware();
|
|
|
|
acpi_pm_start(acpi_state);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* acpi_suspend_enter - Actually enter a sleep state.
|
|
* @pm_state: ignored
|
|
*
|
|
* Flush caches and go to sleep. For STR we have to call arch-specific
|
|
* assembly, which in turn call acpi_enter_sleep_state().
|
|
* It's unfortunate, but it works. Please fix if you're feeling frisky.
|
|
*/
|
|
static int acpi_suspend_enter(suspend_state_t pm_state)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
u32 acpi_state = acpi_target_sleep_state;
|
|
int error;
|
|
|
|
trace_suspend_resume(TPS("acpi_suspend"), acpi_state, true);
|
|
switch (acpi_state) {
|
|
case ACPI_STATE_S1:
|
|
barrier();
|
|
status = acpi_enter_sleep_state(acpi_state);
|
|
break;
|
|
|
|
case ACPI_STATE_S3:
|
|
if (!acpi_suspend_lowlevel)
|
|
return -ENOSYS;
|
|
error = acpi_suspend_lowlevel();
|
|
if (error)
|
|
return error;
|
|
pr_info("Low-level resume complete\n");
|
|
pm_set_resume_via_firmware();
|
|
break;
|
|
}
|
|
trace_suspend_resume(TPS("acpi_suspend"), acpi_state, false);
|
|
|
|
/* This violates the spec but is required for bug compatibility. */
|
|
acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
|
|
|
|
/* Reprogram control registers */
|
|
acpi_leave_sleep_state_prep(acpi_state);
|
|
|
|
/* ACPI 3.0 specs (P62) says that it's the responsibility
|
|
* of the OSPM to clear the status bit [ implying that the
|
|
* POWER_BUTTON event should not reach userspace ]
|
|
*
|
|
* However, we do generate a small hint for userspace in the form of
|
|
* a wakeup event. We flag this condition for now and generate the
|
|
* event later, as we're currently too early in resume to be able to
|
|
* generate wakeup events.
|
|
*/
|
|
if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3)) {
|
|
acpi_event_status pwr_btn_status = ACPI_EVENT_FLAG_DISABLED;
|
|
|
|
acpi_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status);
|
|
|
|
if (pwr_btn_status & ACPI_EVENT_FLAG_STATUS_SET) {
|
|
acpi_clear_event(ACPI_EVENT_POWER_BUTTON);
|
|
/* Flag for later */
|
|
pwr_btn_event_pending = true;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Disable and clear GPE status before interrupt is enabled. Some GPEs
|
|
* (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
|
|
* acpi_leave_sleep_state will reenable specific GPEs later
|
|
*/
|
|
acpi_disable_all_gpes();
|
|
/* Allow EC transactions to happen. */
|
|
acpi_ec_unblock_transactions();
|
|
|
|
suspend_nvs_restore();
|
|
|
|
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
|
|
}
|
|
|
|
static int acpi_suspend_state_valid(suspend_state_t pm_state)
|
|
{
|
|
u32 acpi_state;
|
|
|
|
switch (pm_state) {
|
|
case PM_SUSPEND_ON:
|
|
case PM_SUSPEND_STANDBY:
|
|
case PM_SUSPEND_MEM:
|
|
acpi_state = acpi_suspend_states[pm_state];
|
|
|
|
return sleep_states[acpi_state];
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static const struct platform_suspend_ops acpi_suspend_ops = {
|
|
.valid = acpi_suspend_state_valid,
|
|
.begin = acpi_suspend_begin,
|
|
.prepare_late = acpi_pm_prepare,
|
|
.enter = acpi_suspend_enter,
|
|
.wake = acpi_pm_finish,
|
|
.end = acpi_pm_end,
|
|
};
|
|
|
|
/**
|
|
* acpi_suspend_begin_old - Set the target system sleep state to the
|
|
* state associated with given @pm_state, if supported, and
|
|
* execute the _PTS control method. This function is used if the
|
|
* pre-ACPI 2.0 suspend ordering has been requested.
|
|
*/
|
|
static int acpi_suspend_begin_old(suspend_state_t pm_state)
|
|
{
|
|
int error = acpi_suspend_begin(pm_state);
|
|
if (!error)
|
|
error = __acpi_pm_prepare();
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
|
|
* been requested.
|
|
*/
|
|
static const struct platform_suspend_ops acpi_suspend_ops_old = {
|
|
.valid = acpi_suspend_state_valid,
|
|
.begin = acpi_suspend_begin_old,
|
|
.prepare_late = acpi_pm_pre_suspend,
|
|
.enter = acpi_suspend_enter,
|
|
.wake = acpi_pm_finish,
|
|
.end = acpi_pm_end,
|
|
.recover = acpi_pm_finish,
|
|
};
|
|
|
|
static bool s2idle_wakeup;
|
|
|
|
int acpi_s2idle_begin(void)
|
|
{
|
|
acpi_scan_lock_acquire();
|
|
return 0;
|
|
}
|
|
|
|
int acpi_s2idle_prepare(void)
|
|
{
|
|
if (acpi_sci_irq_valid()) {
|
|
enable_irq_wake(acpi_sci_irq);
|
|
acpi_ec_set_gpe_wake_mask(ACPI_GPE_ENABLE);
|
|
}
|
|
|
|
acpi_enable_wakeup_devices(ACPI_STATE_S0);
|
|
|
|
/* Change the configuration of GPEs to avoid spurious wakeup. */
|
|
acpi_enable_all_wakeup_gpes();
|
|
acpi_os_wait_events_complete();
|
|
|
|
s2idle_wakeup = true;
|
|
return 0;
|
|
}
|
|
|
|
bool acpi_s2idle_wake(void)
|
|
{
|
|
if (!acpi_sci_irq_valid())
|
|
return pm_wakeup_pending();
|
|
|
|
while (pm_wakeup_pending()) {
|
|
/*
|
|
* If IRQD_WAKEUP_ARMED is set for the SCI at this point, the
|
|
* SCI has not triggered while suspended, so bail out (the
|
|
* wakeup is pending anyway and the SCI is not the source of
|
|
* it).
|
|
*/
|
|
if (irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq))) {
|
|
pm_pr_dbg("Wakeup unrelated to ACPI SCI\n");
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* If the status bit of any enabled fixed event is set, the
|
|
* wakeup is regarded as valid.
|
|
*/
|
|
if (acpi_any_fixed_event_status_set()) {
|
|
pm_pr_dbg("ACPI fixed event wakeup\n");
|
|
return true;
|
|
}
|
|
|
|
/* Check wakeups from drivers sharing the SCI. */
|
|
if (acpi_check_wakeup_handlers()) {
|
|
pm_pr_dbg("ACPI custom handler wakeup\n");
|
|
return true;
|
|
}
|
|
|
|
/* Check non-EC GPE wakeups and dispatch the EC GPE. */
|
|
if (acpi_ec_dispatch_gpe()) {
|
|
pm_pr_dbg("ACPI non-EC GPE wakeup\n");
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Cancel the SCI wakeup and process all pending events in case
|
|
* there are any wakeup ones in there.
|
|
*
|
|
* Note that if any non-EC GPEs are active at this point, the
|
|
* SCI will retrigger after the rearming below, so no events
|
|
* should be missed by canceling the wakeup here.
|
|
*/
|
|
pm_system_cancel_wakeup();
|
|
acpi_os_wait_events_complete();
|
|
|
|
/*
|
|
* The SCI is in the "suspended" state now and it cannot produce
|
|
* new wakeup events till the rearming below, so if any of them
|
|
* are pending here, they must be resulting from the processing
|
|
* of EC events above or coming from somewhere else.
|
|
*/
|
|
if (pm_wakeup_pending()) {
|
|
pm_pr_dbg("Wakeup after ACPI Notify sync\n");
|
|
return true;
|
|
}
|
|
|
|
rearm_wake_irq(acpi_sci_irq);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void acpi_s2idle_restore(void)
|
|
{
|
|
/*
|
|
* Drain pending events before restoring the working-state configuration
|
|
* of GPEs.
|
|
*/
|
|
acpi_os_wait_events_complete(); /* synchronize GPE processing */
|
|
acpi_ec_flush_work(); /* flush the EC driver's workqueues */
|
|
acpi_os_wait_events_complete(); /* synchronize Notify handling */
|
|
|
|
s2idle_wakeup = false;
|
|
|
|
acpi_enable_all_runtime_gpes();
|
|
|
|
acpi_disable_wakeup_devices(ACPI_STATE_S0);
|
|
|
|
if (acpi_sci_irq_valid()) {
|
|
acpi_ec_set_gpe_wake_mask(ACPI_GPE_DISABLE);
|
|
disable_irq_wake(acpi_sci_irq);
|
|
}
|
|
}
|
|
|
|
void acpi_s2idle_end(void)
|
|
{
|
|
acpi_scan_lock_release();
|
|
}
|
|
|
|
static const struct platform_s2idle_ops acpi_s2idle_ops = {
|
|
.begin = acpi_s2idle_begin,
|
|
.prepare = acpi_s2idle_prepare,
|
|
.wake = acpi_s2idle_wake,
|
|
.restore = acpi_s2idle_restore,
|
|
.end = acpi_s2idle_end,
|
|
};
|
|
|
|
void __weak acpi_s2idle_setup(void)
|
|
{
|
|
s2idle_set_ops(&acpi_s2idle_ops);
|
|
}
|
|
|
|
static void acpi_sleep_suspend_setup(void)
|
|
{
|
|
bool suspend_ops_needed = false;
|
|
int i;
|
|
|
|
for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++)
|
|
if (acpi_sleep_state_supported(i)) {
|
|
sleep_states[i] = 1;
|
|
suspend_ops_needed = true;
|
|
}
|
|
|
|
if (suspend_ops_needed)
|
|
suspend_set_ops(old_suspend_ordering ?
|
|
&acpi_suspend_ops_old : &acpi_suspend_ops);
|
|
|
|
acpi_s2idle_setup();
|
|
}
|
|
|
|
#else /* !CONFIG_SUSPEND */
|
|
#define s2idle_wakeup (false)
|
|
static inline void acpi_sleep_suspend_setup(void) {}
|
|
#endif /* !CONFIG_SUSPEND */
|
|
|
|
bool acpi_s2idle_wakeup(void)
|
|
{
|
|
return s2idle_wakeup;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static u32 saved_bm_rld;
|
|
|
|
static int acpi_save_bm_rld(void)
|
|
{
|
|
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
|
|
return 0;
|
|
}
|
|
|
|
static void acpi_restore_bm_rld(void)
|
|
{
|
|
u32 resumed_bm_rld = 0;
|
|
|
|
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
|
|
if (resumed_bm_rld == saved_bm_rld)
|
|
return;
|
|
|
|
acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
|
|
}
|
|
|
|
static struct syscore_ops acpi_sleep_syscore_ops = {
|
|
.suspend = acpi_save_bm_rld,
|
|
.resume = acpi_restore_bm_rld,
|
|
};
|
|
|
|
static void acpi_sleep_syscore_init(void)
|
|
{
|
|
register_syscore_ops(&acpi_sleep_syscore_ops);
|
|
}
|
|
#else
|
|
static inline void acpi_sleep_syscore_init(void) {}
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
#ifdef CONFIG_HIBERNATION
|
|
static unsigned long s4_hardware_signature;
|
|
static struct acpi_table_facs *facs;
|
|
static int sigcheck = -1; /* Default behaviour is just to warn */
|
|
|
|
void __init acpi_check_s4_hw_signature(int check)
|
|
{
|
|
sigcheck = check;
|
|
}
|
|
|
|
static int acpi_hibernation_begin(pm_message_t stage)
|
|
{
|
|
if (!nvs_nosave) {
|
|
int error = suspend_nvs_alloc();
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
if (stage.event == PM_EVENT_HIBERNATE)
|
|
pm_set_suspend_via_firmware();
|
|
|
|
acpi_pm_start(ACPI_STATE_S4);
|
|
return 0;
|
|
}
|
|
|
|
static int acpi_hibernation_enter(void)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
|
|
/* This shouldn't return. If it returns, we have a problem */
|
|
status = acpi_enter_sleep_state(ACPI_STATE_S4);
|
|
/* Reprogram control registers */
|
|
acpi_leave_sleep_state_prep(ACPI_STATE_S4);
|
|
|
|
return ACPI_SUCCESS(status) ? 0 : -EFAULT;
|
|
}
|
|
|
|
static void acpi_hibernation_leave(void)
|
|
{
|
|
pm_set_resume_via_firmware();
|
|
/*
|
|
* If ACPI is not enabled by the BIOS and the boot kernel, we need to
|
|
* enable it here.
|
|
*/
|
|
acpi_enable();
|
|
/* Reprogram control registers */
|
|
acpi_leave_sleep_state_prep(ACPI_STATE_S4);
|
|
/* Check the hardware signature */
|
|
if (facs && s4_hardware_signature != facs->hardware_signature)
|
|
pr_crit("Hardware changed while hibernated, success doubtful!\n");
|
|
/* Restore the NVS memory area */
|
|
suspend_nvs_restore();
|
|
/* Allow EC transactions to happen. */
|
|
acpi_ec_unblock_transactions();
|
|
}
|
|
|
|
static void acpi_pm_thaw(void)
|
|
{
|
|
acpi_ec_unblock_transactions();
|
|
acpi_enable_all_runtime_gpes();
|
|
}
|
|
|
|
static const struct platform_hibernation_ops acpi_hibernation_ops = {
|
|
.begin = acpi_hibernation_begin,
|
|
.end = acpi_pm_end,
|
|
.pre_snapshot = acpi_pm_prepare,
|
|
.finish = acpi_pm_finish,
|
|
.prepare = acpi_pm_prepare,
|
|
.enter = acpi_hibernation_enter,
|
|
.leave = acpi_hibernation_leave,
|
|
.pre_restore = acpi_pm_freeze,
|
|
.restore_cleanup = acpi_pm_thaw,
|
|
};
|
|
|
|
/**
|
|
* acpi_hibernation_begin_old - Set the target system sleep state to
|
|
* ACPI_STATE_S4 and execute the _PTS control method. This
|
|
* function is used if the pre-ACPI 2.0 suspend ordering has been
|
|
* requested.
|
|
*/
|
|
static int acpi_hibernation_begin_old(pm_message_t stage)
|
|
{
|
|
int error;
|
|
/*
|
|
* The _TTS object should always be evaluated before the _PTS object.
|
|
* When the old_suspended_ordering is true, the _PTS object is
|
|
* evaluated in the acpi_sleep_prepare.
|
|
*/
|
|
acpi_sleep_tts_switch(ACPI_STATE_S4);
|
|
|
|
error = acpi_sleep_prepare(ACPI_STATE_S4);
|
|
if (error)
|
|
return error;
|
|
|
|
if (!nvs_nosave) {
|
|
error = suspend_nvs_alloc();
|
|
if (error)
|
|
return error;
|
|
}
|
|
|
|
if (stage.event == PM_EVENT_HIBERNATE)
|
|
pm_set_suspend_via_firmware();
|
|
|
|
acpi_target_sleep_state = ACPI_STATE_S4;
|
|
acpi_scan_lock_acquire();
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
|
|
* been requested.
|
|
*/
|
|
static const struct platform_hibernation_ops acpi_hibernation_ops_old = {
|
|
.begin = acpi_hibernation_begin_old,
|
|
.end = acpi_pm_end,
|
|
.pre_snapshot = acpi_pm_pre_suspend,
|
|
.prepare = acpi_pm_freeze,
|
|
.finish = acpi_pm_finish,
|
|
.enter = acpi_hibernation_enter,
|
|
.leave = acpi_hibernation_leave,
|
|
.pre_restore = acpi_pm_freeze,
|
|
.restore_cleanup = acpi_pm_thaw,
|
|
.recover = acpi_pm_finish,
|
|
};
|
|
|
|
static void acpi_sleep_hibernate_setup(void)
|
|
{
|
|
if (!acpi_sleep_state_supported(ACPI_STATE_S4))
|
|
return;
|
|
|
|
hibernation_set_ops(old_suspend_ordering ?
|
|
&acpi_hibernation_ops_old : &acpi_hibernation_ops);
|
|
sleep_states[ACPI_STATE_S4] = 1;
|
|
if (!sigcheck)
|
|
return;
|
|
|
|
acpi_get_table(ACPI_SIG_FACS, 1, (struct acpi_table_header **)&facs);
|
|
if (facs) {
|
|
/*
|
|
* s4_hardware_signature is the local variable which is just
|
|
* used to warn about mismatch after we're attempting to
|
|
* resume (in violation of the ACPI specification.)
|
|
*/
|
|
s4_hardware_signature = facs->hardware_signature;
|
|
|
|
if (sigcheck > 0) {
|
|
/*
|
|
* If we're actually obeying the ACPI specification
|
|
* then the signature is written out as part of the
|
|
* swsusp header, in order to allow the boot kernel
|
|
* to gracefully decline to resume.
|
|
*/
|
|
swsusp_hardware_signature = facs->hardware_signature;
|
|
}
|
|
}
|
|
}
|
|
#else /* !CONFIG_HIBERNATION */
|
|
static inline void acpi_sleep_hibernate_setup(void) {}
|
|
#endif /* !CONFIG_HIBERNATION */
|
|
|
|
static void acpi_power_off_prepare(void)
|
|
{
|
|
/* Prepare to power off the system */
|
|
acpi_sleep_prepare(ACPI_STATE_S5);
|
|
acpi_disable_all_gpes();
|
|
acpi_os_wait_events_complete();
|
|
}
|
|
|
|
static void acpi_power_off(void)
|
|
{
|
|
/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
|
|
pr_debug("%s called\n", __func__);
|
|
local_irq_disable();
|
|
acpi_enter_sleep_state(ACPI_STATE_S5);
|
|
}
|
|
|
|
int __init acpi_sleep_init(void)
|
|
{
|
|
char supported[ACPI_S_STATE_COUNT * 3 + 1];
|
|
char *pos = supported;
|
|
int i;
|
|
|
|
acpi_sleep_dmi_check();
|
|
|
|
sleep_states[ACPI_STATE_S0] = 1;
|
|
|
|
acpi_sleep_syscore_init();
|
|
acpi_sleep_suspend_setup();
|
|
acpi_sleep_hibernate_setup();
|
|
|
|
if (acpi_sleep_state_supported(ACPI_STATE_S5)) {
|
|
sleep_states[ACPI_STATE_S5] = 1;
|
|
pm_power_off_prepare = acpi_power_off_prepare;
|
|
pm_power_off = acpi_power_off;
|
|
} else {
|
|
acpi_no_s5 = true;
|
|
}
|
|
|
|
supported[0] = 0;
|
|
for (i = 0; i < ACPI_S_STATE_COUNT; i++) {
|
|
if (sleep_states[i])
|
|
pos += sprintf(pos, " S%d", i);
|
|
}
|
|
pr_info("(supports%s)\n", supported);
|
|
|
|
/*
|
|
* Register the tts_notifier to reboot notifier list so that the _TTS
|
|
* object can also be evaluated when the system enters S5.
|
|
*/
|
|
register_reboot_notifier(&tts_notifier);
|
|
return 0;
|
|
}
|