aboutsummaryrefslogtreecommitdiff
path: root/drivers/acpi
AgeCommit message (Collapse)Author
2007-10-18Hibernation: Check if ACPI is enabled during restore in the right placeRafael J. Wysocki
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>
2007-10-18PM: Rename hibernation_ops to platform_hibernation_opsRafael J. Wysocki
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>
2007-10-18PM: Rework struct hibernation_opsRafael J. Wysocki
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>
2007-10-18PM: Rework struct platform_suspend_opsRafael J. Wysocki
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>
2007-10-18PM: Rename struct pm_ops and related thingsRafael J. Wysocki
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>
2007-10-14more trivial signedness fixes in driversAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-12Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (75 commits) PM: merge device power-management source files sysfs: add copyrights kobject: update the copyrights kset: add some kerneldoc to help describe what these strange things are Driver core: rename ktype_edd and ktype_efivar Driver core: rename ktype_driver Driver core: rename ktype_device Driver core: rename ktype_class driver core: remove subsystem_init() sysfs: move sysfs file poll implementation to sysfs_open_dirent sysfs: implement sysfs_open_dirent sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir sysfs: make sysfs_root a regular directory dirent sysfs: open code sysfs_attach_dentry() sysfs: make s_elem an anonymous union sysfs: make bin attr open get active reference of parent too sysfs: kill unnecessary NULL pointer check in sysfs_release() sysfs: kill unnecessary sysfs_get() in open paths sysfs: reposition sysfs_dirent->s_mode. sysfs: kill sysfs_update_file() ...
2007-10-12Convert from class_device to device for drivers/videotonyj@suse.de
Convert from class_device to device for drivers/video. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12kobjects: fix up improper use of the kobject name fieldGreg Kroah-Hartman
A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead.
2007-10-12Driver core: change add_uevent_var to use a structKay Sievers
This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12ACPI: remove the now unused ifdef codeThomas Gleixner
The conversion of x86-64 to clock events makes the #ifdef CONFIG_GENERIC_CLOCKEVENTS n the timer broadcast functions useless. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2007-10-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (24 commits) ide: use only ->set_pio_mode method for programming PIO modes (take 2) sis5513: don't change UDMA settings when programming PIO it8213/piix/slc90e66: don't change DMA settings when programming PIO alim15x3: PIO mode setup fixes siimage: fix ->set_pio_mode method to select PIO data transfer cs5520: don't enable VDMA in ->speedproc sc1200: remove redundant warning message from sc1200_tune_chipset() ide-pmac: PIO mode setup fixes (take 3) icside: fix ->speedproc to return on unsupported modes (take 5) sgiioc4: use ide_tune_dma() amd74xx/via82cxxx: use ide_tune_dma() ide: add ide_set{_max}_pio() (take 4) ide: Kconfig face-lift ide: move ide_rate_filter() calls to the upper layer (take 2) sis5513: add ->udma_filter method for chipset_family >= ATA_133 ide: mode limiting fixes for user requested speed changes ide: add missing ide_rate_filter() calls to ->speedproc()-s ide: call udma_filter() before resorting to the UltraDMA mask ide: make jmicron match vendor and device class pdc202xx_new: switch to using pci_get_slot() (take 2) ...
2007-10-11ide: hook ACPI _PSx method to IDE power on/offShaohua Li
ACPI spec defines the sequence of IDE power on/off: Powering down: Call _GTM. Power down drive (calls _PS3 method and turns off power planes). Powering up: Power up drive (calls _PS0 method if present and turns on power planes). Call _STM passing info from _GTM (possibly modified), with ID data from each drive. Initialize the channel. May modify the results of _GTF. For each drive: Call _GTF. Execute task file (possibly modified). This patch adds the missed _PS0/_PS3 methods call. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Len Brown <len.brown@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-09drivers/firmware: const-ify DMI API and internalsJeff Garzik
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>
2007-09-25ACPI: CONFIG_ACPI_SLEEP=n power off regression in 2.6.23-rc8 (NOT in rc7)Alexey Starikovskiy
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>
2007-09-25ACPI: suspend: build-fix for CONFIG_SUSPEND=n and CONFIG_HIBERNATION=yAlexey Starikovskiy
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>
2007-09-22ACPI: disable lower idle C-states across suspend/resumeThomas Gleixner
device_suspend() calls ACPI suspend functions, which seems to have undesired side effects on lower idle C-states. It took me some time to realize that especially the VAIO BIOSes (both Andrews jinxed UP and my elfstruck SMP one) show this effect. I'm quite sure that other bug reports against suspend/resume about turning the system into a brick have the same root cause. After fishing in the dark for quite some time, I realized that removing the ACPI processor module before suspend (this removes the lower C-state functionality) made the problem disappear. Interestingly enough the propability of having a bricked box is influenced by various factors (interrupts, size of the ram image, ...). Even adding a bunch of printks in the wrong places made the problem go away. The previous periodic tick implementation simply pampered over the problem, which explains why the dyntick / clockevents changes made this more prominent. We avoid complex functionality during the boot process and we have to do the same during suspend/resume. It is a similar scenario and equaly fragile. Add suspend / resume functions to the ACPI processor code and disable the lower idle C-states across suspend/resume. Fall back to the default idle implementation (halt) instead. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Andrew Morton <akpm@linux-foundation.org> Cc: Len Brown <lenb@kernel.org> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-09-21Pull suspend.now into release branchLen Brown
2007-09-21ACPI: suspend: consolidate handling of Sx states addendumFrans Pop
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>
2007-09-20ACPI: suspend: consolidate handling of Sx states.Alexey Starikovskiy
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>
2007-09-18ACPI: video: remove dmesg spamMaik Broemme
i am actually heavily using the ACPI video extension for my Thinkpad X61 Tablet. I have bound the input events triggered by the brightness up/down keys to a simple echo <value> > /sys/class/backlight/acpi_video1/brightness but everytime the event is triggered and acpi_video_device_lcd_set_level() is called i got a notificication in my kernel log like: set_level status: 0 set_level status: 0 set_level status: 0 set_level status: 0 ... Signed-off-by: Maik Broemme <mbroemme@plusserver.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-18ACPI: video: _DOS=0 by default to prevent hotkey hangZhang Rui
In the past, the Linux/ACPI video driver invoked _DOS (Display Output Switch) with the parameter 1 to tell the BIOS to switch the video output display for us. But this conflicts with Linux native graphics drivers, and can cause all sorts of issues, including hanging the system. http://bugzilla.kernel.org/show_bug.cgi?id=6001 Here we change the Linux default to evaluate _DOS=0, which tells the BIOS to simply send us a hotkey event and not touch the graphics hardware. The acpi video driver sends the display switch hotkey event up through the intput layer, and X can interpret that and use its native graphics driver to switch the display. For the case where Linux has no native graphics driver running, or the graphics driver doesn't know how to switch video and the BIOS (safely) does, the previous behaviour can be restored with: # echo 1 > /proc/acpi/video/*/DOS Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-09-17Pull misc into release branchLen Brown
2007-09-16ACPI: Reevaluate C/P/T states when a cpu becomes onlineVenkatesh Pallipadi
Reevaluate C/P/T states when a cpu becomes online. This avoids the caching of the broadcast information in the clockevents layer. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Len Brown <len.brown@intel.com>
2007-09-03ACPI: fix CONFIG_NET=n acpi_bus_generate_netlink_event build failureHenrique de Moraes Holschuh
drivers/acpi/event.c:243: error: 'acpi_generate_netlink_event' undeclared here (not in a function) Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-30ACPI: EC: Check if boot_ec was really found in DSDTAlexey Starikovskiy
acpi_get_devices() returns success if it did not find any device. We have to check for this case. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Tested-by: Daniel Ritz <daniel.ritz-ml@swissonline.ch> Tested-by: Luca <kronos.it@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-28ACPI: (more) delete CONFIG_ACPI_PROCFS_SLEEP (again)Christian Borntraeger
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>
2007-08-27reverse CONFIG_ACPI_PROC_EVENT defaultHugh Dickins
Sigh. Again an ACPI assault on the Thinkpad's Fn+F4 to suspend to RAM. The default and text for CONFIG_THINKPAD_ACPI_INPUT_ENABLED were fixed in -rc3, but now commit 14e04fb34ffa82ee61ae69f98d8fca12d2e8e31c ("ACPI: Schedule /proc/acpi/event for removal") introduces the ACPI_PROC_EVENT config entry, and defaults it to 'n' to disable it again. Change default to y, and add comment to make it clearer that n is for future distros. Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Len Brown <len.brown@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-25Pull bugzilla-8798 into release branchLen Brown
2007-08-25ACPI: work around duplicate name "VID" problem on T61Zhang Rui
This can only fix the problem that more than one video bus device have the same AML name "VID". ie. the proc I/F for the second "VID" video bus device is located under /proc/acpi/video/VID1/... As this is really rare and the ACPI proc I/F is a legacy feature that we are planning to remove. We won't provide a generic solution for this problem. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25Pull events into release branchLen Brown
Conflicts: drivers/acpi/video.c Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25Pull misc into release branchLen Brown
2007-08-25ACPI: add dump_stack() to trace acpi_format_exception programming errorsAndrew Morton
Dump the stack so we can find the secretive caller to acpi_format_exception(). Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25make drivers/acpi/scan.c:create_modalias() staticAdrian Bunk
This patch makes the needlessly global create_modalias() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25ACPI: Fix a warning of discarding qualifiers from pointer target typeAl Viro
drivers/acpi/ec.c: In function `acpi_ec_ecdt_probe': drivers/acpi/ec.c:873: warning: passing arg 1 of `acpi_get_devices' discards qualifiers from pointer target type Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25ACPI: "ACPI handle has no context!" should be KERN_DEBUGShaohua Li
Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-25Pull suspend into release branchLen Brown
2007-08-24Pull video into release branchLen Brown
2007-08-24Pull thermal into release branchLen Brown
2007-08-24ACPI video hotkey: export missing ACPI video hotkey events via input layerLuming Yu
Signed-off-by: Yu Luming <luming.yu@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-24Pull ec into release branchLen Brown
2007-08-24Pull bugzilla-8630 into release branchLen Brown
2007-08-24Pull battery into release branchLen Brown
2007-08-24ACPI: Validate XSDT, use RSDT if XSDT failsZhao Yakui
ACPI 1.0 used an RSDT with 32-bit physical addresses. ACPI 2.0 adds an XSDT with 32-bit physical addresses. An ACPI 2.0 aware OS is supposed to use the XSDT (when present) instead of the RSDT. However, several systems have failed because the XSDT contains NULL entries -- while it is missing pointers to needed tables, such as SSDTs. When we find an XSDT with NULL entries, discard it and use the ACPI 1.0 RSDT instead. http://bugzilla.kernel.org/show_bug.cgi?id=8630 Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-24ACPI: /proc/acpi/thermal_zone trip points are now read-only, mark them as suchPavel Machek
Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-24ACPI: fix ia64 allnoconfig buildLen Brown
drivers/acpi/event.c:238: error: conflicting types for ‘acpi_bus_generate_netlink_event’ include/acpi/acpi_bus.h:324: error: previous declaration of ‘acpi_bus_generate_netlink_event’ was here Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-24ACPI: enable GPEs before calling _WAK on resumeThomas Renninger
It seems it's required to enable GPEs before _WAK. E.g. X60 triggers a LID related GPE instead of doing a Notify in WAK. Now the GPE reaches the kernel and the Notify for LID status change gets thrown from there. Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-24ACPI: EC: revert fix for bugzilla 8709Alexey Starikovskiy
This is a manual revert of 7c010de7506954e973abfab5c5999c5a97f7a73e, a fix that broke another ASUS in 8909 and 8919. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-23ACPI video hotkey: remove invalid events handler for video output devicesZhang Rui
Both ACPI_VIDEO_NOTIFY_SWITCH and ACPI_VIDEO_NOTIFY_PROBE are valid for video bus devices only. Actually ACPI video output device should never be notified for a output device switch/probe. ACPI bus devices notify handler already has the code to handle these kinds of events. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2007-08-23ACPI: Schedule /proc/acpi/event for removalLen Brown
Schedule /proc/acpi/event for removal in 6 months. Re-name acpi_bus_generate_event() to acpi_bus_generate_proc_event() to make sure there is no confusion that it is for /proc/acpi/event only. Add CONFIG_ACPI_PROC_EVENT to allow removal of /proc/acpi/event. There is no functional change if CONFIG_ACPI_PROC_EVENT=y Signed-off-by: Len Brown <len.brown@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 06:44:25 +0000