forked from luck/tmp_suning_uos_patched
ACPI: do acpisleep dmi check when CONFIG_ACPI_SLEEP is set
The current acpisleep DMI checks only run when CONFIG_SUSPEND is set. And this may break hibernation on some platforms when CONFIG_SUSPEND is cleared. Move acpisleep DMI check into #ifdef CONFIG_ACPI_SLEEP instead. [rjw: Added acpi_sleep_dmi_check() and rebased on top of earlier patches adding entries to acpisleep_dmi_table[].] References: https://bugzilla.kernel.org/show_bug.cgi?id=45921 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui
Rafael J. Wysocki
parent
261cba2deb
commit
0ac1b1d7b7
@ -124,283 +124,9 @@ void __init acpi_old_suspend_ordering(void)
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old_suspend_ordering = true;
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}
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/**
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* acpi_pm_freeze - Disable the GPEs and suspend EC transactions.
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*/
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static int acpi_pm_freeze(void)
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{
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acpi_disable_all_gpes();
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acpi_os_wait_events_complete();
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acpi_ec_block_transactions();
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return 0;
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}
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/**
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* acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
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*/
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static int acpi_pm_pre_suspend(void)
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{
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acpi_pm_freeze();
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return suspend_nvs_save();
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}
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/**
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* __acpi_pm_prepare - Prepare the platform to enter the target state.
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*
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* If necessary, set the firmware waking vector and do arch-specific
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* nastiness to get the wakeup code to the waking vector.
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*/
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static int __acpi_pm_prepare(void)
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{
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int error = acpi_sleep_prepare(acpi_target_sleep_state);
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if (error)
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acpi_target_sleep_state = ACPI_STATE_S0;
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return error;
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}
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/**
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* acpi_pm_prepare - Prepare the platform to enter the target sleep
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* state and disable the GPEs.
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*/
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static int acpi_pm_prepare(void)
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{
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int error = __acpi_pm_prepare();
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if (!error)
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error = acpi_pm_pre_suspend();
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return error;
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}
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static int find_powerf_dev(struct device *dev, void *data)
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{
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struct acpi_device *device = to_acpi_device(dev);
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const char *hid = acpi_device_hid(device);
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return !strcmp(hid, ACPI_BUTTON_HID_POWERF);
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}
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/**
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* acpi_pm_finish - Instruct the platform to leave a sleep state.
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*
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* This is called after we wake back up (or if entering the sleep state
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* failed).
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*/
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static void acpi_pm_finish(void)
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{
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struct device *pwr_btn_dev;
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u32 acpi_state = acpi_target_sleep_state;
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acpi_ec_unblock_transactions();
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suspend_nvs_free();
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if (acpi_state == ACPI_STATE_S0)
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return;
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printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n",
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acpi_state);
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acpi_disable_wakeup_devices(acpi_state);
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acpi_leave_sleep_state(acpi_state);
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/* reset firmware waking vector */
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acpi_set_firmware_waking_vector((acpi_physical_address) 0);
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acpi_target_sleep_state = ACPI_STATE_S0;
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/* If we were woken with the fixed power button, provide a small
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* hint to userspace in the form of a wakeup event on the fixed power
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* button device (if it can be found).
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*
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* We delay the event generation til now, as the PM layer requires
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* timekeeping to be running before we generate events. */
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if (!pwr_btn_event_pending)
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return;
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pwr_btn_event_pending = false;
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pwr_btn_dev = bus_find_device(&acpi_bus_type, NULL, NULL,
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find_powerf_dev);
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if (pwr_btn_dev) {
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pm_wakeup_event(pwr_btn_dev, 0);
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put_device(pwr_btn_dev);
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}
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}
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/**
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* acpi_pm_end - Finish up suspend sequence.
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*/
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static void acpi_pm_end(void)
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{
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/*
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* This is necessary in case acpi_pm_finish() is not called during a
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* failing transition to a sleep state.
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*/
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acpi_target_sleep_state = ACPI_STATE_S0;
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acpi_sleep_tts_switch(acpi_target_sleep_state);
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}
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#else /* !CONFIG_ACPI_SLEEP */
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#define acpi_target_sleep_state ACPI_STATE_S0
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#endif /* CONFIG_ACPI_SLEEP */
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#ifdef CONFIG_SUSPEND
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static u32 acpi_suspend_states[] = {
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[PM_SUSPEND_ON] = ACPI_STATE_S0,
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[PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
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[PM_SUSPEND_MEM] = ACPI_STATE_S3,
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[PM_SUSPEND_MAX] = ACPI_STATE_S5
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};
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/**
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* acpi_suspend_begin - Set the target system sleep state to the state
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* associated with given @pm_state, if supported.
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*/
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static int acpi_suspend_begin(suspend_state_t pm_state)
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{
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u32 acpi_state = acpi_suspend_states[pm_state];
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int error = 0;
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error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
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if (error)
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return error;
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if (sleep_states[acpi_state]) {
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acpi_target_sleep_state = acpi_state;
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acpi_sleep_tts_switch(acpi_target_sleep_state);
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} else {
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printk(KERN_ERR "ACPI does not support this state: %d\n",
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pm_state);
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error = -ENOSYS;
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}
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return error;
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}
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/**
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* acpi_suspend_enter - Actually enter a sleep state.
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* @pm_state: ignored
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*
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* Flush caches and go to sleep. For STR we have to call arch-specific
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* assembly, which in turn call acpi_enter_sleep_state().
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* It's unfortunate, but it works. Please fix if you're feeling frisky.
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*/
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static int acpi_suspend_enter(suspend_state_t pm_state)
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{
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acpi_status status = AE_OK;
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u32 acpi_state = acpi_target_sleep_state;
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int error;
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ACPI_FLUSH_CPU_CACHE();
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switch (acpi_state) {
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case ACPI_STATE_S1:
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barrier();
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status = acpi_enter_sleep_state(acpi_state);
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break;
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case ACPI_STATE_S3:
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error = acpi_suspend_lowlevel();
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if (error)
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return error;
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pr_info(PREFIX "Low-level resume complete\n");
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break;
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}
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/* This violates the spec but is required for bug compatibility. */
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acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
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/* Reprogram control registers */
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acpi_leave_sleep_state_prep(acpi_state);
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/* ACPI 3.0 specs (P62) says that it's the responsibility
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* of the OSPM to clear the status bit [ implying that the
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* POWER_BUTTON event should not reach userspace ]
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*
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* However, we do generate a small hint for userspace in the form of
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* a wakeup event. We flag this condition for now and generate the
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* event later, as we're currently too early in resume to be able to
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* generate wakeup events.
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*/
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if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3)) {
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acpi_event_status pwr_btn_status;
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acpi_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status);
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if (pwr_btn_status & ACPI_EVENT_FLAG_SET) {
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acpi_clear_event(ACPI_EVENT_POWER_BUTTON);
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/* Flag for later */
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pwr_btn_event_pending = true;
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}
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}
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/*
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* Disable and clear GPE status before interrupt is enabled. Some GPEs
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* (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
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* acpi_leave_sleep_state will reenable specific GPEs later
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*/
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acpi_disable_all_gpes();
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/* Allow EC transactions to happen. */
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acpi_ec_unblock_transactions_early();
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suspend_nvs_restore();
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return ACPI_SUCCESS(status) ? 0 : -EFAULT;
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}
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static int acpi_suspend_state_valid(suspend_state_t pm_state)
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{
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u32 acpi_state;
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switch (pm_state) {
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case PM_SUSPEND_ON:
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case PM_SUSPEND_STANDBY:
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case PM_SUSPEND_MEM:
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acpi_state = acpi_suspend_states[pm_state];
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return sleep_states[acpi_state];
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default:
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return 0;
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}
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}
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static const struct platform_suspend_ops acpi_suspend_ops = {
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.valid = acpi_suspend_state_valid,
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.begin = acpi_suspend_begin,
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.prepare_late = acpi_pm_prepare,
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.enter = acpi_suspend_enter,
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.wake = acpi_pm_finish,
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.end = acpi_pm_end,
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};
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/**
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* acpi_suspend_begin_old - Set the target system sleep state to the
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* state associated with given @pm_state, if supported, and
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* execute the _PTS control method. This function is used if the
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* pre-ACPI 2.0 suspend ordering has been requested.
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*/
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static int acpi_suspend_begin_old(suspend_state_t pm_state)
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{
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int error = acpi_suspend_begin(pm_state);
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if (!error)
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error = __acpi_pm_prepare();
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return error;
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}
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/*
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* The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
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* been requested.
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*/
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static const struct platform_suspend_ops acpi_suspend_ops_old = {
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.valid = acpi_suspend_state_valid,
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.begin = acpi_suspend_begin_old,
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.prepare_late = acpi_pm_pre_suspend,
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.enter = acpi_suspend_enter,
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.wake = acpi_pm_finish,
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.end = acpi_pm_end,
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.recover = acpi_pm_finish,
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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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old_suspend_ordering = true;
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acpi_old_suspend_ordering();
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return 0;
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}
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@ -566,6 +292,286 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
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},
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{},
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};
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static void acpi_sleep_dmi_check(void)
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{
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dmi_check_system(acpisleep_dmi_table);
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}
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/**
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* acpi_pm_freeze - Disable the GPEs and suspend EC transactions.
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*/
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static int acpi_pm_freeze(void)
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{
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acpi_disable_all_gpes();
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acpi_os_wait_events_complete();
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acpi_ec_block_transactions();
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return 0;
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}
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/**
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* acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
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*/
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static int acpi_pm_pre_suspend(void)
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{
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acpi_pm_freeze();
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return suspend_nvs_save();
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}
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/**
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* __acpi_pm_prepare - Prepare the platform to enter the target state.
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*
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* If necessary, set the firmware waking vector and do arch-specific
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* nastiness to get the wakeup code to the waking vector.
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*/
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static int __acpi_pm_prepare(void)
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{
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int error = acpi_sleep_prepare(acpi_target_sleep_state);
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if (error)
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acpi_target_sleep_state = ACPI_STATE_S0;
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return error;
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}
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/**
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* acpi_pm_prepare - Prepare the platform to enter the target sleep
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* state and disable the GPEs.
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*/
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static int acpi_pm_prepare(void)
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{
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int error = __acpi_pm_prepare();
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if (!error)
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error = acpi_pm_pre_suspend();
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return error;
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}
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static int find_powerf_dev(struct device *dev, void *data)
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{
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struct acpi_device *device = to_acpi_device(dev);
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const char *hid = acpi_device_hid(device);
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return !strcmp(hid, ACPI_BUTTON_HID_POWERF);
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}
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/**
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* acpi_pm_finish - Instruct the platform to leave a sleep state.
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*
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* This is called after we wake back up (or if entering the sleep state
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* failed).
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*/
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static void acpi_pm_finish(void)
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{
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struct device *pwr_btn_dev;
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u32 acpi_state = acpi_target_sleep_state;
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acpi_ec_unblock_transactions();
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suspend_nvs_free();
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if (acpi_state == ACPI_STATE_S0)
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return;
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printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n",
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acpi_state);
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acpi_disable_wakeup_devices(acpi_state);
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acpi_leave_sleep_state(acpi_state);
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/* reset firmware waking vector */
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acpi_set_firmware_waking_vector((acpi_physical_address) 0);
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acpi_target_sleep_state = ACPI_STATE_S0;
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/* If we were woken with the fixed power button, provide a small
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* hint to userspace in the form of a wakeup event on the fixed power
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* button device (if it can be found).
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*
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* We delay the event generation til now, as the PM layer requires
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* timekeeping to be running before we generate events. */
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if (!pwr_btn_event_pending)
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return;
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pwr_btn_event_pending = false;
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pwr_btn_dev = bus_find_device(&acpi_bus_type, NULL, NULL,
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find_powerf_dev);
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if (pwr_btn_dev) {
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pm_wakeup_event(pwr_btn_dev, 0);
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put_device(pwr_btn_dev);
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}
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}
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/**
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* acpi_pm_end - Finish up suspend sequence.
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*/
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static void acpi_pm_end(void)
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{
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/*
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* This is necessary in case acpi_pm_finish() is not called during a
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* failing transition to a sleep state.
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*/
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acpi_target_sleep_state = ACPI_STATE_S0;
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acpi_sleep_tts_switch(acpi_target_sleep_state);
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}
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#else /* !CONFIG_ACPI_SLEEP */
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#define acpi_target_sleep_state ACPI_STATE_S0
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static inline void acpi_sleep_dmi_check(void) {}
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#endif /* CONFIG_ACPI_SLEEP */
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#ifdef CONFIG_SUSPEND
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static u32 acpi_suspend_states[] = {
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[PM_SUSPEND_ON] = ACPI_STATE_S0,
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[PM_SUSPEND_STANDBY] = ACPI_STATE_S1,
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[PM_SUSPEND_MEM] = ACPI_STATE_S3,
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[PM_SUSPEND_MAX] = ACPI_STATE_S5
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};
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/**
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* acpi_suspend_begin - Set the target system sleep state to the state
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* associated with given @pm_state, if supported.
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*/
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static int acpi_suspend_begin(suspend_state_t pm_state)
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{
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u32 acpi_state = acpi_suspend_states[pm_state];
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int error = 0;
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error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
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if (error)
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return error;
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if (sleep_states[acpi_state]) {
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acpi_target_sleep_state = acpi_state;
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acpi_sleep_tts_switch(acpi_target_sleep_state);
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} else {
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printk(KERN_ERR "ACPI does not support this state: %d\n",
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pm_state);
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error = -ENOSYS;
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}
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return error;
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}
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/**
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* acpi_suspend_enter - Actually enter a sleep state.
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* @pm_state: ignored
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*
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* Flush caches and go to sleep. For STR we have to call arch-specific
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* assembly, which in turn call acpi_enter_sleep_state().
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* It's unfortunate, but it works. Please fix if you're feeling frisky.
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*/
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static int acpi_suspend_enter(suspend_state_t pm_state)
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{
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acpi_status status = AE_OK;
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u32 acpi_state = acpi_target_sleep_state;
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int error;
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ACPI_FLUSH_CPU_CACHE();
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switch (acpi_state) {
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case ACPI_STATE_S1:
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barrier();
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status = acpi_enter_sleep_state(acpi_state);
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break;
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case ACPI_STATE_S3:
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error = acpi_suspend_lowlevel();
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if (error)
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return error;
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pr_info(PREFIX "Low-level resume complete\n");
|
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break;
|
||||
}
|
||||
|
||||
/* 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_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status);
|
||||
|
||||
if (pwr_btn_status & ACPI_EVENT_FLAG_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_early();
|
||||
|
||||
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,
|
||||
};
|
||||
#endif /* CONFIG_SUSPEND */
|
||||
|
||||
#ifdef CONFIG_HIBERNATION
|
||||
@ -896,13 +902,13 @@ int __init acpi_sleep_init(void)
|
||||
u8 type_a, type_b;
|
||||
#ifdef CONFIG_SUSPEND
|
||||
int i = 0;
|
||||
|
||||
dmi_check_system(acpisleep_dmi_table);
|
||||
#endif
|
||||
|
||||
if (acpi_disabled)
|
||||
return 0;
|
||||
|
||||
acpi_sleep_dmi_check();
|
||||
|
||||
sleep_states[ACPI_STATE_S0] = 1;
|
||||
printk(KERN_INFO PREFIX "(supports S0");
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user