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* | | Merge branches 'release' and 'wmi-2.6.25' into releaseLen Brown2008-02-07
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| * | | ACPI: WMI: Add ACPI-WMI mapping driverCarlos Corbacho2008-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following is an implementation of the Windows Management Instrumentation (WMI) ACPI interface mapper (PNP0C14). What it does: Parses the _WDG method and exports functions to process WMI method calls, data block query/ set commands (both based on GUID) and does basic event handling. How: WMI presents an in kernel interface here (essentially, a minimal wrapper around ACPI) (const char *guid assume the 36 character ASCII representation of a GUID - e.g. 67C3371D-95A3-4C37-BB61-DD47B491DAAB) wmi_evaluate_method(const char *guid, u8 instance, u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out) wmi_query_block(const char *guid, u8 instance, struct acpi_buffer *out) wmi_set_block(const char *guid, u38 instance, const struct acpi_buffer *in) wmi_install_notify_handler(acpi_notify_handler handler); wmi_remove_notify_handler(void); wmi_get_event_data(u32 event, struct acpi_buffer *out) wmi_has_guid(const char guid*) wmi_has_guid() is a helper function to find if a GUID exists or not on the system (a quick and easy way for WMI dependant drivers to see if the the method/ block they want exists, since GUIDs are supposed to be unique). Event handling - allow a WMI based driver to register a notifier handler for each GUID with WMI. When a notification is sent to a GUID in WMI, the handler registered with WMI is then called (it is left to the caller to ask for the WMI event data associated with the GUID, if needed). What it won't do: Unicode - The MS article[1] calls for converting between ASCII and Unicode (or vice versa) if a GUID is marked as "string". This is left up to the calling driver. Handle a MOF[1] - the WMI mapper just exports methods, data and events to userspace. MOF handling is down to userspace. Userspace interface - this will be added later. [1] http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx === ChangeLog == v1 (2007-10-02): * Initial release v2 (2007-10-05): * Cleaned up code - split up super "wmi_evaluate_block" -> each external symbol now handles its own ACPI calls, rather than handing off to a "super" method (and in turn, is a lot simpler to read) * Added a find_guid() symbol - return true if a given GUID exists on the system * wmi_* functions now return type acpi_status (since they are just fancy wrappers around acpi_evaluate_object()) * Removed extra debug code v3 (2007-10-27) * More code clean up - now passes checkpatch.pl * Change data block calls - ref MS spec, method ID is not required for them, so drop it from the function parameters. * Const'ify guid in the function call parameters. * Fix _WDG buffer handling - copy the data to our own private structure. * Change WMI from tristate to bool - otherwise the external functions are not exported in linux/acpi.h if you try to build WMI as a module. * Fix more flag comparisons. * Add a maintainers entry - since I wrote this, I should take the blame for it. v4 (2007-10-30) * Add missing brace from after fixing checkpatch errors. * Rewrote event handling - allow external drivers to register with WMI to handle WMI events * Clean up flags and sanitise flag handling v5 (2007-11-03) * Add sysfs interface for userspace. Export events over netlink again. * Remove module left overs, fully convert to built-in driver. * Tweak in-kernel API to use u8 for instance, since this is what the GUID blocks use (so instance cannot be greater than u8). * Export wmi_get_event_data() for in kernel WMI drivers. v6 (2007-11-07) * Split out userspace into a different patch v7 (2007-11-20) * Fix driver to handle multiple PNP0C14 devices - store all GUIDs using the kernel's built in list functions, and just keep adding to the list every time we handle a PNP0C14 devices - GUIDs will always be unique, and WMI callers do not know or care about different devices. * Change WMI event handler registration to use its' own event handling struct; we should not pass an acpi_handle down to any WMI based drivers - they should be able to function with only the calls provided in WMI. * Update my e-mail address v8 (2007-11-28) * Convert back to a module. * Update Kconfig to default to building as a module. * Remove an erroneous printk. * Simply comments for string flag (since we now leave the handling to the caller). v9 (2007-12-07) * Add back missing MODULE_DEVICE_TABLE for autoloading * Checkpatch fixes v10 (2007-12-12) * Workaround broken GUIDs declared expensive without a WCxx method. * Minor cleanups v11 (2007-12-17) * More fixing for broken GUIDs declared expensive without a WCxx method. * Add basic EmbeddedControl region handling. v12 (2007-12-18) * Changed EC region handling code, as per Alexey's comments. v13 (2007-12-27) * Changed event handling so that we can have one event handler registered per GUID, as per Matthew Garrett's suggestion. v14 (2008-01-12) * Remove ACPI debug statements v15 (2008-02-01) * Replace two remaining 'x == NULL' type tests with '!x' v16 (2008-02-05) * Change MAINTAINERS entry, as I am not, and never have been, paid to work on WMI * Remove 'default' line from Kconfig Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> CC: Matthew Garrett <mjg59@srcf.ucam.org> CC: Alexey Starikovskiy <aystarik@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Merge branches 'release' and 'menlo' into releaseLen Brown2008-02-07
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/acpi/video.c Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: fan: build fix for CONFIG_ACPI_PROCFS=nLen Brown2008-02-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/acpi/fan.c:340: error: ‘acpi_fan_dir’ undeclared (first use in this function) Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: thermal fixupZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The alias name may be used in _PSL, _ALx and _TZD, so we bind the cooling device only if the acpi_device node matches. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: CELSIUS_TO_KELVIN fixupZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix an imprecision in CELSIUS_TO_KELVIN and move these two macroes to a proper place. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: attach thermal zone infoZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Intel menlow driver needs to get the pointer of themal_zone_device structure of an ACPI thermal zone. Attach this to each ACPI thermal zone device object. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: register ACPI Video LCD as generic thermal cooling deviceZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Register ACPI video device as thermal cooling devices as they may be listed in _TZD method and the backlight control can be used for throttling. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: register ACPI Processor as generic thermal cooling deviceZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Register ACPI processor as thermal cooling devices. A combination of processor T-state and P-state are used for thermal throttling. the processor will reduce the frequency first and then set the T-state. we use cpufreq_thermal_reduction_pctg to calculate the cpufreq limit, and call cpufreq_verify_with_limit to set the cpufreq limit. if cpufreq driver is loaded, then we have four cooling state for cpufreq control. cooling state 0: cpufreq limit == max_freq cooling state 1: cpufreq limit == max_freq * 80% cooling state 2: cpufreq limit == max_freq * 60% cooling state 3: cpufreq limit == max_freq * 40% after the cpufreq limit is set to 40 percentage of the max_freq, we use T-state for cooling. eg. a processor has P-state support, and it has 8 T-state (T0-T7), the max_state of the proceesor is 10: state cpufreq-limit T-state 0: max_freq T0 1: max_freq * 80% T0 2: max_freq * 60% T0 3: max_freq * 40% T0 4: max_freq * 40% T1 5: max_freq * 40% T2 6: max_freq * 40% T3 7: max_freq * 40% T4 8: max_freq * 40% T5 9: max_freq * 40% T6 10: max_freq * 40% T7 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: register ACPI Fan as generic thermal cooling deviceZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Register ACPI Fan as thermal cooling device. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: ACPI thermal zone handle notification correctlyZhang Rui2008-02-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the ACPI thermal action upon notification 0x81 and 0x82. According to the ACPI spec, we should: re-evaluate _PSV and _ACx methods upon notification 0x81 re-evaluate _PSL and _ALx and _TZD upon notificaiton 0x82. But the current code re-evaluates all the trip points for 0x81 while only re-evaluates _TZD for 0x82. Fix this violation of ACPI spec. TODO: devices in _PSL, _ALx and _TZD may change after a notification 0x82. At this time, we need to re-bind the cooling devices with the thermal zone. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | ACPI: register ACPI thermal zone as generic thermal zone devicesZhang Rui2008-02-01
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Register ACPI thermal zone as thermal zone device. the new sys I/F for ACPI thermal zone will be like this: /sys/class/thermal: |thermal_zone1: |-----type: "ACPI thermal zone". RO |-----temp: the current temperature. RO |-----mode: the current working mode. RW. the default value is "kernel" which means thermal management is done by ACPI thermal driver. "echo user > mode" prevents all the ACPI thermal driver actions upon any trip points. |-----trip_point_0_temp: the threshold of trip point 0. RO. |-----trip_point_0_type: "critical". RO. the type of trip point 0 This may be one of critical/hot/passive/active[x] for an ACPI thermal zone. ... |-----trip_point_3_temp: |-----trip_point_3_type: "active[1]" Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Thomas Sujith <sujith.thomas@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | Merge branches 'release' and 'stats' into releaseLen Brown2008-02-07
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| * | | | ACPI: create /sys/firmware/acpi/interruptsLen Brown2008-02-06
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | See Documentation/ABI/testing/sysfs-firmware-acpi Based-on-original-patch-by: Luming Yu <luming.yu@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
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*-. \ \ \ Merge branches 'release', 'misc' and 'misc-2.6.25' into releaseLen Brown2008-02-07
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| | * | | | PM: documentation cleanupsPavel Machek2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | | ACPI: acpi_pci_irq_find_prt_entry(): use list_for_each_entry() instead of ↵Matthias Kaehlcke2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | list_for_each() Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
| | * | | | ACPI: remove duplicated warning messageMiguel Botón2008-02-07
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove duplicated warning message in acpi_power_transition() ACPI: Transitioning device [%s] to D%d\n This warning message is printed by acpi_bus_set_power() so we don't need to print it again. Signed-off-by: Miguel Botón <mboton@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | acpi: make __acpi_map_table() and __init functionJan Beulich2007-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. as it it used only during early boot. Signed-off-by: Jan Beulich <jbeulich@novell.com> arch/ia64/kernel/acpi.c | 2 +- arch/x86/kernel/acpi/boot.c | 4 ++-- drivers/acpi/osl.c | 3 ++- 3 files changed, 5 insertions(+), 4 deletions(-) Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | Merge branches 'release' and 'ppc-workaround' into releaseLen Brown2008-02-07
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| * | | | | ACPI: add "processor.ignore_ppc" hook to workaround BIOS _PPC weirdnessThomas Renninger2008-01-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There have been fixes using _PPC, which seem to unhide a problem on HP nx6125 (double cpufreq switch freezes the machine for several seconds). This one should provide a workaround for the nx6125 and for possible other machines that show any weird _PPC behaviour. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | | Merge branches 'release' and 'hp-cid' into releaseLen Brown2008-02-07
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| * | | | | | ACPI: Check for any matching CID when walking namespace.Andrew Patterson2008-01-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The callback function acpi_ns_get_device_callback called from acpi_get_devices() will check CID's if the HID does not match. This code has a bug where it requires that all CIDs match the HID. Changed the code so that any CID match will do. Signed-off-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | | | Merge branches 'release' and 'gpe-ack' into releaseLen Brown2008-02-07
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| * | | | | | | ACPI: Defer enabling of level GPE until all pending notifies doneAlexey Starikovskiy2007-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Level GPE should not be enabled until all work caused by it is done, e.g. all Notify() methods are completed. This can be accomplished by appending enable_gpe function to the end of notify queue. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Acked-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | | | | | | | Merge branches 'release' and 'dmi' into releaseLen Brown2008-02-07
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| * | | | | | | | ACPI: blacklist updateLen Brown2008-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | move some OSI(Linux) to "disable" from "unknown" to reduce dmesg lines that we don't really need. update Acer 5315 comment update Dell entries, add R200 entry update Apple entries Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | ACPI: make struct osi_linux staticAdrian Bunk2008-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | ACPI: make acpi_dmi_dump() staticAdrian Bunk2008-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | ACPI: update blacklist commentsLen Brown2008-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ...based on additional feedback -- no code change. Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | DMI: remove duplicate helper routineLen Brown2008-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use existing dmi_get_system_info(), Delete duplicate dmi_get_slot() Spotted-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | ACPI: remove redundant Acer blacklist entryLen Brown2008-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dmi_check_system() does sub-string matching using strstr(), rather than exact string compares with !strcmp(). So delete the longer of the Acer blacklist entries, as its function is just a redundant console message. Spotted-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Len Brown <len.brown@intel.com>
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*-. \ \ \ \ \ \ \ \ Merge branches 'release', 'cpuidle-2.6.25' and 'idle' into releaseLen Brown2008-02-07
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| | * | | | | | | | | cpuidle: Add a poll_idle methodvenkatesh.pallipadi@intel.com2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a default poll idle state with 0 latency. Provides an option to users to use poll_idle by using 0 as the latency requirement. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * | | | | | | | | ACPI: cpuidle: Support C1 idle time accountingvenkatesh.pallipadi@intel.com2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Show C1 idle time in /sysfs cpuidle interface. C1 idle time may not be entirely accurate in all cases. It includes the time spent in the interrupt handler after wakeup with "hlt" based C1. But, it will be accurate with "mwait" based C1. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * | | | | | | | | ACPI: enable MWAIT for C1 idlevenkatesh.pallipadi@intel.com2008-02-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add MWAIT idle for C1 state instead of halt, on platforms that support C1 state with MWAIT. Renames cx->space_id to something more appropriate. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * | | | | | | | | ACPI: idle: Fix acpi_safe_halt usages and interrupt enabling/disablingvenkatesh.pallipadi@intel.com2008-02-07
| | | |_|_|_|_|/ / / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | acpi_safe_halt() needs interrupts to be disabled for atomic need_resched check and safe halt. Otherwise we may miss an interrupt and go into halt. acpi_safe_halt() also does not enable interrupts on all return paths. So the callers should handle enable and disable interrupts around it. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | | cpuidle: default processor.latency_factor=2Len Brown2007-12-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More aggressively request deep C-states. Note that the job of the OS is to minimize latency impact to expected break events such as interrupts. It is not the job of the OS to try to calculate if the C-state will reach energy break-even. The platform doesn't give the OS enough information for it to make that calculation. Thus, it is up to the platform to decide if it is worth it to go as deep as the OS requested it to, or if it should internally demote to a more shallow C-state. But the converse is not true. The platform can not promote into a deeper C-state than the OS requested else it may violate latency constraints. So it is important that the OS be aggressive in giving the platform permission to enter deep C-states. Signed-off-by: Len Brown <len.brown@intel.com>
| * | | | | | | | | cpuidle: create processor.latency_factor tunableLen Brown2007-12-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Start with default value of 6, so by default, there is no functional change in this patch. Signed-off-by: Len Brown <len.brown@intel.com>
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*-----------------------. \ \ \ \ \ \ \ \ \ Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla-6933', ↵Len Brown2008-02-07
|\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | | | | | |_|_|_|_|_|_|_|_|/ / / / / / / / / | | | | |/| | | | | | | | | | | | | / / / / | | | | | | |_|_|_|_|_|_|_|_|_|_|_|/ / / / | | | | | |/| | | | | | | | | | | | | | | '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 Yang2007-12-27
| | | | | | |_|_|_|_|_|_|/ / / / / / / / | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Yang2007-12-27
| | | | | | |_|_|_|_|_|/ / / / / / / / | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | /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>
| | | | | | | | | | | * | | | | | | | ACPI: video: Ignore devices that aren't present in hardwareMatthew Garrett2008-02-02
| | | | | | | | | | | | |_|_|_|_|/ / | | | | | | | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Vendors often ship machines with a choice of integrated or discrete graphics, and use the same DSDT for both. As a result, the ACPI video module will locate devices that may not exist on this specific platform. Attempt to determine whether the device exists or not, and abort the device creation if it doesn't. http://bugzilla.kernel.org/show_bug.cgi?id=9614 Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | | | | | * / | | | | | | ACPI: tables: complete searching upon RSDP w/ bad checksum.Len Brown2007-12-14
| | | | | |_|_|_|_|/ / / / / / / / | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI tables follow a tree structure in memory. The root of the tree is the RSDP (Root System Description Pointer). To find the RSDP, the OS searches for the signature "RSD PTR " in well known physical memory locations. Then the OS computes a table checksum to verify that the signature is really part of a valid table header. Some systems have a proper signature but an invalid checksum; followed elsewhere by a proper signature with valid checksum. http://bugzilla.kernel.org/show_bug.cgi?id=9444 The Linux RSDP scanning code bailed out on those systems and as a result they booted with ACPI disabled. Fix this by deleting the Linux RSDP scanning code and plugging in the ACPICA RSDP scanning code. Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | | | | * | | | | | | | ACPI: EC: Some hardware requires burst mode to operate properlyAlexey Starikovskiy2008-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Burst mode temporary (50 ms) locks EC to do only transactions with driver, without it some hardware returns abstract garbage. Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | | | | * | | | | | | | ACPI: EC: Do the byte access with a fast pathAlexey Starikovskiy2008-01-10
| | | | | | |_|_|/ / / / / / / / | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Specification allows only byte access for EC region, so make it separate from bug-compatible multi-byte access. Also do not allow return of garbage in supplied *value. Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | | | * | | | | | | | ACPI: video: Rationalise ACPI backlight implementationMatthew Garrett2008-02-01
| | | | | | | | |/ / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sysfs backlight class provides no mechanism for querying the acceptable brightness for a backlight. The ACPI spec states that values are only valid if they are reported as available by the firmware. Since we can't provide that information to userspace, instead collapse the range to the number of actual values that can be set. http://bugzilla.kernel.org/show_bug.cgi?id=9277 Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | | * | | | / / / / export thermal notification to userspace when nocrt is setZhang Rui2007-12-06
| | | | | | | | |_|_|/ / / / | | | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | module parameter is used to prevent the thermal_zone action upon critical trip points. But exporting this notification to userspace is still useful. By setting nocrt with this patch applied, ACPI will take no action but exporting the events to userspace upon critical/hot trip points. http://bugzilla.kernel.org/show_bug.cgi?id=9139 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | | | | | * / | | | | | | ACPI: ACPI Exception (): AE_NOT_FOUND, Processor Device is not presentZhang Rui2008-01-09
| | | | | |/ / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI Exception (acpi_processor-0677): AE_NOT_FOUND, Processor Device is not present [20060707] According to the ACPI spec 6.3.7, "If a device object (including the processor object) does not have an _STA object, then OSPM assumes that all of the above bits are set, (in other words, the device is present, enabled, shown in the UI and funtioning)". is_processor_present shoud return 1 if the processor device object exists while it doesn't have an _STA object. http://bugzilla.kernel.org/show_bug.cgi?id=8570 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | | * | / / / / / / / / ACPI: remove P2B-S from blacklist.Dave Jones2008-01-12
| | | | |/ / / / / / / / | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to http://bugzilla.kernel.org/show_bug.cgi?id=6933 The latest BIOS for the P2B-S works fine. Remove it from the blacklist. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-16 20:17:48 -0400