1 // SPDX-License-Identifier: GPL-2.0-only
3  * sleep.c - ACPI sleep support.
7  * Copyright (c) 2000-2003 Patrick Mochel
30  * Some HW-full platforms do not have _S5, so they may need
68 	/* do we have a wakeup address for S2 and S3? */  in acpi_sleep_prepare()
72 			return -EFAULT;  in acpi_sleep_prepare()
179 		DMI_MATCH(DMI_BOARD_NAME, "KN9 Series(NF-CK804)"),
186 		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
192 	.ident = "Asus Pundit P1-AH2 (M2N8L motherboard)",
200 	.ident = "Panasonic CF51-2L",
204 		DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"),
209 	.ident = "Sony Vaio VGN-FW41E_H",
212 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW41E_H"),
217 	.ident = "Sony Vaio VGN-FW21E",
220 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21E"),
225 	.ident = "Sony Vaio VGN-FW21M",
228 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21M"),
241 	.ident = "Sony Vaio VGN-SR11M",
244 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR11M"),
265 	.ident = "Sony Vaio VGN-NW130D",
268 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NW130D"),
281 	.ident = "Averatec AV1020-ED2",
289 	.ident = "Asus A8N-SLI DELUXE",
292 		DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI DELUXE"),
297 	.ident = "Asus A8N-SLI Premium",
300 		DMI_MATCH(DMI_BOARD_NAME, "A8N-SLI Premium"),
305 	.ident = "Sony Vaio VGN-SR26GN_P",
308 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR26GN_P"),
321 	.ident = "Sony Vaio VGN-FW520F",
324 		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW520F"),
353 	 * Lenovo G50-45 is a platform later than 2012, but needs nvs memory
358 	.ident = "Lenovo G50-45",
365 	 * ThinkPad X1 Tablet(2016) cannot do suspend-to-idle using
399  * acpi_pm_freeze - Disable the GPEs and suspend EC transactions.
410  * acpi_pm_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS.
419  *	__acpi_pm_prepare - Prepare the platform to enter the target state.
421  *	If necessary, set the firmware waking vector and do arch-specific
422  *	nastiness to get the wakeup code to the waking vector.
434  *	acpi_pm_prepare - Prepare the platform to enter the target sleep
447  *	acpi_pm_finish - Instruct the platform to leave a sleep state.
475 	 * hint to userspace in the form of a wakeup event on the fixed power  in acpi_pm_finish()
485 						    NULL, -1);  in acpi_pm_finish()
487 		pm_wakeup_event(&pwr_btn_adev->dev, 0);  in acpi_pm_finish()
493  * acpi_pm_start - Start system PM transition.
503  * acpi_pm_end - Finish up system PM transition.
532  *	acpi_suspend_begin - Set the target system sleep state to the state
546 		return -ENOSYS;  in acpi_suspend_begin()
556  *	acpi_suspend_enter - Actually enter a sleep state.
559  *	Flush caches and go to sleep. For STR we have to call arch-specific
580 			return -ENOSYS;  in acpi_suspend_enter()
584 		pr_info("Low-level resume complete\n");  in acpi_suspend_enter()
601 	 * a wakeup event. We flag this condition for now and generate the  in acpi_suspend_enter()
603 	 * generate wakeup events.  in acpi_suspend_enter()
619 	 * (like wakeup GPE) haven't handler, this can avoid such GPE misfire.  in acpi_suspend_enter()
628 	return ACPI_SUCCESS(status) ? 0 : -EFAULT;  in acpi_suspend_enter()
657  *	acpi_suspend_begin_old - Set the target system sleep state to the
659  *		execute the _PTS control method.  This function is used if the
660  *		pre-ACPI 2.0 suspend ordering has been requested.
672  * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
702 	/* Change the configuration of GPEs to avoid spurious wakeup. */  in acpi_s2idle_prepare()
719 		 * wakeup is pending anyway and the SCI is not the source of  in acpi_s2idle_wake()
723 			pm_pr_dbg("Wakeup unrelated to ACPI SCI\n");  in acpi_s2idle_wake()
729 		 * wakeup is regarded as valid.  in acpi_s2idle_wake()
732 			pm_pr_dbg("ACPI fixed event wakeup\n");  in acpi_s2idle_wake()
738 			pm_pr_dbg("ACPI custom handler wakeup\n");  in acpi_s2idle_wake()
742 		/* Check non-EC GPE wakeups and dispatch the EC GPE. */  in acpi_s2idle_wake()
744 			pm_pr_dbg("ACPI non-EC GPE wakeup\n");  in acpi_s2idle_wake()
749 		 * Cancel the SCI wakeup and process all pending events in case  in acpi_s2idle_wake()
750 		 * there are any wakeup ones in there.  in acpi_s2idle_wake()
752 		 * Note that if any non-EC GPEs are active at this point, the  in acpi_s2idle_wake()
754 		 * should be missed by canceling the wakeup here.  in acpi_s2idle_wake()
761 		 * new wakeup events till the rearming below, so if any of them  in acpi_s2idle_wake()
766 			pm_pr_dbg("Wakeup after ACPI Notify sync\n");  in acpi_s2idle_wake()
779 	 * Drain pending events before restoring the working-state configuration  in acpi_s2idle_restore()
909 	return ACPI_SUCCESS(status) ? 0 : -EFAULT;  in acpi_hibernation_enter()
923 	if (facs && s4_hardware_signature != facs->hardware_signature)  in acpi_hibernation_leave()
950  *	acpi_hibernation_begin_old - Set the target system sleep state to
951  *		ACPI_STATE_S4 and execute the _PTS control method.  This
952  *		function is used if the pre-ACPI 2.0 suspend ordering has been
984  * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has
1013 		s4_hardware_signature = facs->hardware_signature;  in acpi_sleep_hibernate_setup()