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*-. Merge branches 'release', 'misc' and 'misc-2.6.25' into releaseLen Brown2008-02-071-1/+1
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| | * PM: documentation cleanupsPavel Machek2008-02-071-1/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Pavel Machek <pavel@suse.cz> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
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*---. \ \ Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla-6933', ↵Len Brown2008-02-071-31/+15
|\ \ \ \ \ | | |_|/ / | |/| | | | | | | | 'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release
| | | * | ACPI: /proc/acpi/alarm parsing: handle large numbers properlyYi Yang2007-12-271-31/+10
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c, big sec, min, hr, mo, day and yr are counted twice to get reasonable values, that is very superfluous, we can do that only once. In additon, /proc/acpi/alarm can set a related value which can be specified as YYYY years MM months DD days HH hours MM minutes SS senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00 , that means 3 days later, current code can't handle such a case. This patch removes unnecessary code and does with the aforementioned situation. Before applying this patch: [root@localhost /]# cat /proc/acpi/alarm 2007-12-00 00:00:00 [root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm [root@localhost /]# cat /proc/acpi/alarm 0007-12-02 **:**:** [root@localhost /]# After applying this patch: [root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm [root@localhost ~]# cat /proc/acpi/alarm 2007-12-00 00:00:00 [root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm [root@localhost ~]# cat /proc/acpi/alarm 0007-12-04 03:03:00 [root@localhost ~]# Signed-off-by: Yi Yang <yi.y.yang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * | ACPI: detect invalid argument written to /proc/acpi/alarmSigned-off by Yi Yang2007-12-271-0/+5
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | /proc/acpi/alarm can't be set correctly, here is a sample: [root@localhost /]# echo "2006 09" > /proc/acpi/alarm [root@localhost /]# cat /proc/acpi/alarm 2007-12-09 09:09:09 [root@localhost /]# echo "2006 04" > /proc/acpi/alarm [root@localhost /]# cat /proc/acpi/alarm 2007-12-04 04:04:04 [root@localhost /]# Obviously, it is wrong, it should consider it as an invalid input. after this patch: [root@localhost /]# echo "2008 09" > /proc/acpi/alarm -bash: echo: write error: Invalid argument [root@localhost /]# Signed-off-by: Yi Yang <yi.y.yang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | Merge branches 'release', 'acpi_pm_device_sleep_state' and 'battery' into ↵Len Brown2008-02-071-3/+12
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| * | ACPI: Fix acpi_pm_device_sleep_state()Rafael J. Wysocki2008-01-111-3/+12
| |/ | | | | | | | | | | | | | | | | | | Fix acpi_pm_device_sleep_state() to return the value returned by _SxD if the device is supposed to wake up the system from given sleep state and the evaluation of _SxW fails (e.g. _SxW is not present). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Print message before calling _PTSRafael J. Wysocki2008-02-012-3/+3
| | | | | | | | | | | | | | | | | | | | Make acpi_sleep_prepare() static and cause it to print a message specifying the ACPI system sleep state to be entered (helpful for debugging the suspend/hibernation code). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI hibernation: Call _PTS before suspending devicesRafael J. Wysocki2008-02-011-11/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ACPI 1.0 specification wants us to put devices into low power states after executing the _PTS global control method, while ACPI 2.0 and later want us to do that in the reverse order. The current hibernation code follows ACPI 2.0 in that respect which may cause some ACPI 1.0x systems to hang during hibernation (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). Make the hibernation code execute _PTS before putting devices into low power states (ie. in accordance with ACPI 1.0x) with the possibility to override that using the 'acpi_new_pts_ordering' kernel command line option. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | Hibernation: Introduce begin() and end() callbacksRafael J. Wysocki2008-02-011-2/+12
| | | | | | | | | | | | | | | | | | Introduce global hibernation callback .end() and rename global hibernation callback .start() to .begin(), in analogy with the recent modifications of the global suspend callbacks. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI suspend: Call _PTS before suspending devicesRafael J. Wysocki2008-02-011-13/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ACPI 1.0 specification wants us to put devices into low power states after executing the _PTS global control method, while ACPI 2.0 and later want us to do that in the reverse order. The current suspend code follows ACPI 2.0 in that respect which causes some ACPI 1.0x systems to hang during suspend (ref. http://bugzilla.kernel.org/show_bug.cgi?id=9528). Make the suspend code execute _PTS before putting devices into low power states (ie. in accordance with ACPI 1.0x) and provide a command line option to override the default if need be. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Separate disabling of GPEs from _PTSRafael J. Wysocki2008-02-011-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | The preparation to enter an ACPI system sleep state is now tied to the disabling of GPEs, but the GPEs should not be disabled before suspending devices. Since on ACPI 1.0x systems the _PTS global control method should be executed before suspending devices, we need to disable GPEs separately. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Separate invocations of _GTS and _BFS from _PTS and _WAKRafael J. Wysocki2008-02-011-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The execution of ACPI global control methods _GTS and _BFS is currently tied to the preparation to enter a sleep state and to the leaving of the sleep state, respectively. However, these functions are called before disabling the nonboot CPUs and after enabling them, respectively (in fact, on ACPI 1.0x systems the first of them ought to be called before suspending devices), while according to the ACPI specification, _GTS is to be executed right prior to entering the system sleep state and _BFS is to be executed right after the platfor firmware has returned control to the OS on wake up. Move the execution of _GTS and _BFS to the right places. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
* | Suspend: Introduce begin() and end() callbacksRafael J. Wysocki2008-02-011-4/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On ACPI systems the target state set by acpi_pm_set_target() is reset by acpi_pm_finish(), but that need not be called if the suspend fails.  All platforms that use the .set_target() global suspend callback are affected by analogous issues. For this reason, we need an additional global suspend callback that will reset the target state regardless of whether or not the suspend is successful.  Also, it is reasonable to rename the .set_target() callback, since it will be used for a different purpose on ACPI systems (due to ACPI 1.0x code ordering requirements). Introduce the global suspend callback .end() to be executed at the end of the suspend sequence and rename the .set_target() global suspend callback to .begin(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: clear GPE earily in resume to avoid warningShaohua Li2008-02-011-0/+7
| | | | | | | | | | | | | | | | | | | | | | Wakeup GPE hasn't a handler. If system is waked up by such GPE like a USB hotplug, I saw a lot of error reporting the GPE hasn't handler. acpi_leave_sleep_state will clear the GPE but it's too late, we should do it before interrupt is re-enabled. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Fix mismerge in acpi_hibernation_finishRafael J. Wysocki2008-02-011-5/+0
|/ | | | | | | | Some code in acpi_hibernation_finish() was moved to acpi_hibernation_leave(), but the old copy had been left (it's harmless, but also useless). Remove it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* Pull alexey-fixes into release branchLen Brown2007-10-291-2/+3
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| * ACPI: suspend: Wrong order of GPE restore.Alexey Starikovskiy2007-10-251-2/+2
| | | | | | | | | | | | | | | | | | | | acpi_leave_sleep_state() should have correct list of wake and runtime GPEs, which is available only after disable_wakeup_device() is called. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: sleep: Fix GPE suspend cleanupAlexey Starikovskiy2007-10-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Commit 9b039330808b83acac3597535da26f47ad1862ce removed acpi_gpe_sleep_prepare(), the only function used at S5 transition Add call to generic acpi_enable_wake_device(). Reference: https://bugzilla.novell.com/show_bug.cgi?id=299882 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* | Fix /proc/acpi/alarm BCD alarm encodingsLinus Torvalds2007-10-251-37/+29
|/ | | | | | | | | | | | | | This fixes some totally illogical and wrong code that converts things to and from BCD mode essentially randomly, does math on values in BCD mode etc etc. Introduce a few helper functions to make it a bit more obvious what is going on, and make sure that we always do all the arithmetic (and anythign else, for that matter) in binary, not BCD. Tested by Mark Lord, who found the problem originally, and also pushed the patch back and reminded me about it. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'release' of ↵Linus Torvalds2007-10-193-79/+45
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (41 commits) ACPICA: hw: Don't carry spinlock over suspend ACPICA: hw: remove use_lock flag from acpi_hw_register_{read, write} ACPI: cpuidle: port idle timer suspend/resume workaround to cpuidle ACPI: clean up acpi_enter_sleep_state_prep Hibernation: Make sure that ACPI is enabled in acpi_hibernation_finish ACPI: suppress uninitialized var warning cpuidle: consolidate 2.6.22 cpuidle branch into one patch ACPI: thinkpad-acpi: skip blanks before the data when parsing sysfs ACPI: AC: Add sysfs interface ACPI: SBS: Add sysfs alarm ACPI: SBS: Add ACPI_PROCFS around procfs handling code. ACPI: SBS: Add support for power_supply class (and sysfs) ACPI: SBS: Make SBS reads table-driven. ACPI: SBS: Simplify data structures in SBS ACPI: SBS: Split host controller (ACPI0001) from SBS driver (ACPI0002) ACPI: EC: Add new query handler to list head. ACPI: Add acpi_bus_generate_event4() function ACPI: Battery: add sysfs alarm ACPI: Battery: Add sysfs support ACPI: Battery: Misc clean-ups, no functional changes ... Fix up conflicts in drivers/misc/thinkpad_acpi.[ch] manually
| * Pull bugzilla-292300 into release branchLen Brown2007-10-103-79/+40
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| | * ACPI: Hibernate erroneously disabled Suspend wakeup devicesAlexey Starikovskiy2007-09-273-79/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | S4 suspend to disk will disable GPE's permanently because acpi_gpe_sleep_prepare() does not have a counterpart at resume time. Thus, those devices became unavailable for wakeup from subsequent S3 suspend-to-ram. Here acpi_gpe_sleep_prepare() is removed, and upon suspend acpi_enable_wakeup_device() gets its functionality. Upon resume, acpi_disable_wakeup_device() restores the state. https://bugzilla.novell.com/show_bug.cgi?id=292300 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
| * | Hibernation: Make sure that ACPI is enabled in acpi_hibernation_finishRafael J. Wysocki2007-10-101-0/+5
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | If the BIOS does not enable ACPI and the "acpi=off" command line parameter is passed to the boot kernel, ACPI may be disabled when the (restored) image kernel attempts to execute acpi_hibernation_finish(). To prevent this from happening we can call acpi_enable() from acpi_hibernation_finish() (if ACPI is already enabled, this will have no effect). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* | Hibernation: Check if ACPI is enabled during restore in the right placeRafael J. Wysocki2007-10-181-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following scenario leads to total confusion of the platform firmware on some boxes (eg. HPC nx6325): * Hibernate with ACPI enabled * Resume passing "acpi=off" to the boot kernel To prevent this from happening it's necessary to check if ACPI is enabled (and enable it if that's not the case) _right_ _after_ control has been transfered from the boot kernel to the image kernel, before device_power_up() is called (ie. with interrupts disabled).  Enabling ACPI after calling device_power_up() turns out to be insufficient. For this reason, introduce new hibernation callback ->leave() that will be executed before device_power_up() by the restored image kernel.  To make it work, it also is necessary to move swsusp_suspend() from swsusp.c to disk.c (it's name is changed to "create_image", which is more up to the point). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | PM: Rename hibernation_ops to platform_hibernation_opsRafael J. Wysocki2007-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Rename 'struct hibernation_ops' to 'struct platform_hibernation_ops' in analogy with 'struct platform_suspend_ops'. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | PM: Rework struct hibernation_opsRafael J. Wysocki2007-10-181-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During hibernation we also need to tell the ACPI core that we're going to put the system into the S4 sleep state. For this reason, an additional method in 'struct hibernation_ops' is needed, playing the role of set_target() in 'struct platform_suspend_operations'. Moreover, the role of the .prepare() method is now different, so it's better to introduce another method, that in general may be different from .prepare(), that will be used to prepare the platform for creating the hibernation image (.prepare() is used anyway to notify the platform that we're going to enter the low power state after the image has been saved). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | PM: Rework struct platform_suspend_opsRafael J. Wysocki2007-10-181-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason why the .prepare() and .finish() methods in 'struct platform_suspend_ops' should take any arguments, since architectures don't use these methods' argument in any practically meaningful way (ie. either the target system sleep state is conveyed to the platform by .set_target(), or there is only one suspend state supported and it is indicated to the PM core by .valid(), or .prepare() and .finish() aren't defined at all).  There also is no reason why .finish() should return any result. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | PM: Rename struct pm_ops and related thingsRafael J. Wysocki2007-10-181-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The name of 'struct pm_ops' suggests that it is related to the power management in general, but in fact it is only related to suspend.  Moreover, its name should indicate what this structure is used for, so it seems reasonable to change it to 'struct platform_suspend_ops'.  In that case, the name of the global variable of this type used by the PM core and the names of related functions should be changed accordingly. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | drivers/firmware: const-ify DMI API and internalsJeff Garzik2007-10-091-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | Three main sets of changes: 1) dmi_get_system_info() return value should have been marked const, since callers should not be changing that data. 2) const-ify DMI internals, since DMI firmware tables should, whenever possible, be marked const to ensure we never ever write to that data area. 3) const-ify DMI API, to enable marking tables const where possible in low-level drivers. And if we're really lucky, this might enable some additional optimizations on the part of the compiler. The bulk of the changes are #2 and #3, which are interrelated. #1 could have been a separate patch, but it was so small compared to the others, it was easier to roll it into this changeset. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* ACPI: CONFIG_ACPI_SLEEP=n power off regression in 2.6.23-rc8 (NOT in rc7)Alexey Starikovskiy2007-09-252-1/+5
| | | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: suspend: build-fix for CONFIG_SUSPEND=n and CONFIG_HIBERNATION=yAlexey Starikovskiy2007-09-251-21/+21
| | | | | | | | | This fixes compilation with CONFIG_SUSPEND unset and CONFIG_HIBERNATION set (raf. http://marc.info/?l=linux-acpi&m=119055289723895&w=4). Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: suspend: consolidate handling of Sx states addendumFrans Pop2007-09-211-2/+4
| | | | | | | | | Make the S0 state be always reported as supported Signed-off: Frans Pop <elendil@planet.nl> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: suspend: consolidate handling of Sx states.Alexey Starikovskiy2007-09-203-81/+49
| | | | | | | | | | Recent changes to sleep initialization in ACPI dropped reporting of supported Sx states above S3. Fix that and also move S5 init into same file as other Sx. The only functional change is adding printk() for S4 and S5 cases. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: (more) delete CONFIG_ACPI_PROCFS_SLEEP (again)Christian Borntraeger2007-08-281-5/+5
| | | | | | | | | Commit 2bcf9dddeb8e79a4ba55bf191533f70f39ce ('ACPI: delete CONFIG_ACPI_PROCFS_SLEEP (again)') was incomplete. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: "ACPI handle has no context!" should be KERN_DEBUGShaohua Li2007-08-251-1/+1
| | | | | Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* ACPI: restore CONFIG_ACPI_SLEEPLen Brown2007-07-293-3/+5
| | | | | | | | | Restore the 2.6.22 CONFIG_ACPI_SLEEP build option, but now shadowing the new CONFIG_PM_SLEEP option. Signed-off-by: Len Brown <len.brown@intel.com> [ Modified to work with the PM config setup changes. ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Introduce CONFIG_SUSPEND for suspend-to-Ram and standbyRafael J. Wysocki2007-07-294-50/+58
| | | | | | | | | | | | | | | | | | | | | | | | | Introduce CONFIG_SUSPEND representing the ability to enter system sleep states, such as the ACPI S3 state, and allow the user to choose SUSPEND and HIBERNATION independently of each other. Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has been chosen and the kernel is intended for SMP systems. Also, introduce CONFIG_PM_SLEEP which is automatically selected if CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the code needed for both suspend and hibernation. The top-level power management headers and the ACPI code related to suspend and hibernation are modified to use the new definitions (the changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce the number of ifdefs). There are many other files in which CONFIG_PM can be replaced with CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATIONRafael J. Wysocki2007-07-292-4/+4
| | | | | | | | | Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid confusion (among other things, with CONFIG_SUSPEND introduced in the next patch). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Pull d-states into release branchLen Brown2007-07-251-33/+127
|\ | | | | | | | | | | | | | | Conflicts: drivers/acpi/sleep/main.c Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: Remove references to ACPI_STATE_S2 from acpi_pm_enterRafael J. Wysocki2007-07-241-5/+4
| | | | | | | | | | | | | | | | Remove references to ACPI_STATE_S2, introduced by acpi-implement-the-set_target-callback-from-pm_ops.patch, from acpi_pm_enter(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: Add acpi_pm_device_sleep_state helper routineShaohua Li2007-07-221-0/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on the David Brownell's patch at http://marc.info/?l=linux-acpi&m=117873972806360&w=2 updated by: Rafael J. Wysocki <rjw@sisk.pl> Add a helper routine returning the lowest power (highest number) ACPI device power state that given device can be in while the system is in the sleep state indicated by acpi_target_sleep_state . Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Len Brown <len.brown@intel.com>
| * ACPI: Implement the set_target() callback from pm_opsRafael J. Wysocki2007-07-221-32/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the future some drivers may need to use ACPI to determine the low power states in which to place their devices, but to provide the drivers with this information the ACPI core needs to know what sleep state the system is going to enter. Namely, the device's state should not be too high power for given system sleep state and, if the device is supposed to be able to wake up the system, its state should not be too low power for the wake up to be possible). For this purpose, the ACPI core needs to implement the set_target() method in 'struct pm_ops' and store the target system sleep state passed by the PM core in a variable. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Kconfig: remove CONFIG_ACPI_SLEEP from sourceLen Brown2007-07-254-6/+4
| | | | | | | | | | | | | | | | | | | | As it was a synonym for (CONFIG_ACPI && CONFIG_X86), the ifdefs for it were more clutter than they were worth. For ia64, just add a few stubs in anticipation of future S3 or S4 support. Signed-off-by: Len Brown <len.brown@intel.com>
* | ACPI: Kconfig: fold /proc/acpi/sleep under CONFIG_ACPI_PROCFSLen Brown2007-07-242-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | /proc/acpi/sleep has had its own "default n" option, ACPI_SLEEP_PROC_SLEEP, for many months. Time to delete ACPI_SLEEP_PROC_SLEEP. Users that still need /proc/acpi/sleep can still get it along with the other deprecated /proc/acpi files by enabling CONFIG_ACPI_PROCFS. Also delete ACPI_SLEEP_PROC_FS, which was an umbrella for /proc/acpi/sleep, wakeup, alarm, because it was effectively just a synonym for ACPI_SLEEP. Signed-off-by: Len Brown <len.brown@intel.com>
* | Pull misc into release branchLen Brown2007-07-221-5/+0
|\ \ | |/ |/| | | | | | | Conflicts: Documentation/feature-removal-schedule.txt
| * ACPI: suspend: delete toshiba S1 quirkPavel Machek2007-07-031-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | If we have quirk "init... after standby", we should not be calling it while resuming from hibernation. And... that quirk is only ever needed on toshiba 4030cdt... and... noone should be using standby these days, anyway. That quirk was certainly _not_ meant to be ran after hibernation. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
* | PM: Introduce pm_power_off_prepareRafael J. Wysocki2007-07-191-29/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce the pm_power_off_prepare() callback that can be registered by the interested platforms in analogy with pm_idle() and pm_power_off(), used for preparing the system to power off (needed by ACPI). This allows us to drop acpi_sysclass and device_acpi that are only defined in order to register the ACPI power off preparation callback, which is needed by pm_power_off() registered in a much different way. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ACPI: Do not prepare for hibernation in acpi_shutdownRafael J. Wysocki2007-07-191-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | Since we are now explicitly calling hibernation_ops->prepare() before hibernation_ops->enter() in hibernation_platform_enter() (defined in kernel/power/disk.c), ACPI should not call acpi_sleep_prepare(ACPI_STATE_S4) from acpi_shutdown(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | swsusp: introduce restore platform operationsRafael J. Wysocki2007-07-191-0/+16
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At least on some machines it is necessary to prepare the ACPI firmware for the restoration of the system memory state from the hibernation image if the "platform" mode of hibernation has been used. Namely, in that cases we need to disable the GPEs before replacing the "boot" kernel with the "frozen" kernel (cf. http://bugzilla.kernel.org/show_bug.cgi?id=7887). After the restore they will be re-enabled by hibernation_ops->finish(), but if the restore fails, they have to be re-enabled by the restore code explicitly. For this purpose we can introduce two additional hibernation operations, called pre_restore() and restore_cleanup() and call them from the restore code path. Still, they should be called if the "platform" mode of hibernation has been used, so we need to pass the information about the hibernation mode from the "frozen" kernel to the "boot" kernel in the image header. Apparently, we can't drop the disabling of GPEs before the restore because of Bug #7887 .  We also can't do it unconditionally, because the GPEs wouldn't have been enabled after a successful restore if the suspend had been done in the 'shutdown' or 'reboot' mode. In principle we could (and probably should) unconditionally disable the GPEs before each snapshot creation *and* before the restore, but then we'd have to unconditionally enable them after the snapshot creation as well as after the restore (or restore failure)   Still, for this purpose we'd need to modify acpi_enter_sleep_state_prep() and acpi_leave_sleep_state() and we'd have to introduce some mechanism synchronizing the disablind/enabling of the GPEs with the device drivers' .suspend()/.resume() routines and with disable_/enable_nonboot_cpus().  However, this would have affected the suspend (ie. s2ram) code as well as the hibernation, which I'd like to avoid in this patch series. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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