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* Merge branch 'release' of ↵Linus Torvalds2011-11-071-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: cpuidle: Single/Global registration of idle states cpuidle: Split cpuidle_state structure and move per-cpu statistics fields cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare() cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state ACPI: Fix CONFIG_ACPI_DOCK=n compiler warning ACPI: Export FADT pm_profile integer value to userspace thermal: Prevent polling from happening during system suspend ACPI: Drop ACPI_NO_HARDWARE_INIT ACPI atomicio: Convert width in bits to bytes in __acpi_ioremap_fast() PNPACPI: Simplify disabled resource registration ACPI: Fix possible recursive locking in hwregs.c ACPI: use kstrdup() mrst pmu: update comment tools/power turbostat: less verbose debugging
| * mrst pmu: update commentLen Brown2011-11-061-1/+1
| | | | | | | | | | | | referenced MeeGo, in particular, but really means Linux, in general. Signed-off-by: Len Brown <len.brown@intel.com>
* | Merge branch 'modsplit-Oct31_2011' of ↵Linus Torvalds2011-11-065-0/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
| * | x86: efi_32.c is implicitly getting asm/desc.h via module.hPaul Gortmaker2011-10-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to clean up the chain of includes stumbling through module.h, and when we do that, we'll see: CC arch/x86/platform/efi/efi_32.o efi/efi_32.c: In function ‘efi_call_phys_prelog’: efi/efi_32.c:80: error: implicit declaration of function ‘get_cpu_gdt_table’ efi/efi_32.c:82: error: implicit declaration of function ‘load_gdt’ make[4]: *** [arch/x86/platform/efi/efi_32.o] Error 1 Include asm/desc.h so that there are no implicit include assumptions. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
| * | x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULEPaul Gortmaker2011-10-314-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These files were implicitly getting EXPORT_SYMBOL via device.h which was including module.h, but that will be fixed up shortly. By fixing these now, we can avoid seeing things like: arch/x86/kernel/rtc.c:29: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’ arch/x86/kernel/pci-dma.c:20: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL’ arch/x86/kernel/e820.c:69: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_GPL’ [ with input from Randy Dunlap <rdunlap@xenotime.net> and also from Stephen Rothwell <sfr@canb.auug.org.au> ] Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* | | Merge branch 'for-next' of git://git.infradead.org/users/sameo/mfd-2.6Linus Torvalds2011-11-031-15/+161
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-next' of git://git.infradead.org/users/sameo/mfd-2.6: (80 commits) mfd: Fix missing abx500 header file updates mfd: Add missing <linux/io.h> include to intel_msic x86, mrst: add platform support for MSIC MFD driver mfd: Expose TurnOnStatus in ab8500 sysfs mfd: Remove support for early drop ab8500 chip mfd: Add support for ab8500 v3.3 mfd: Add ab8500 interrupt disable hook mfd: Convert db8500-prcmu panic() into pr_crit() mfd: Refactor db8500-prcmu request_clock() function mfd: Rename db8500-prcmu init function mfd: Fix db5500-prcmu defines mfd: db8500-prcmu voltage domain consumers additions mfd: db8500-prcmu reset code retrieval mfd: db8500-prcmu tweak for modem wakeup mfd: Add db8500-pcmu watchdog accessor functions for watchdog mfd: hwacc power state db8500-prcmu accessor mfd: Add db8500-prcmu accessors for PLL and SGA clock mfd: Move to the new db500 PRCMU API mfd: Create a common interface for dbx500 PRCMU drivers mfd: Initialize DB8500 PRCMU regs ... Fix up trivial conflicts in arch/arm/mach-imx/mach-mx31moboard.c arch/arm/mach-omap2/board-omap3beagle.c arch/arm/mach-u300/include/mach/irqs.h drivers/mfd/wm831x-spi.c
| * | x86, mrst: add platform support for MSIC MFD driverMika Westerberg2011-10-241-15/+154
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MSIC MFD driver creates platform devices for MSIC device drivers so we don't need to create them in platform code anymore. This patch adds a new runtime check which determines whether we are running on a Medfield platform and enables the MSIC MFD driver accordingly. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| * | x86, mrst: Some drivers need to known when an SCU is availableAlan Cox2011-10-241-0/+7
| |/ | | | | | | | | | | | | | | | | | | | | Add a notifier so that drivers can hook into SCU availability in order to take actions post initialisation when/if the SCU becomes available. In the ideal world we wouldn't need this and we could avoid any init dependancies of this form, but in practice we can't do it for some cases. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | Merge branch 'x86-uv-for-linus' of ↵Linus Torvalds2011-10-281-11/+6
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: uv2: Workaround for UV2 Hub bug (system global address format)
| * | x86: uv2: Workaround for UV2 Hub bug (system global address format)Jack Steiner2011-09-211-11/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a workaround for a UV2 hub bug that affects the format of system global addresses. The GRU API for UV2 was inadvertently broken by a hardware change. The format of the physical address used for TLB dropins and for addresses used with instructions running in unmapped mode has changed. This change was not documented and became apparent only when diags failed running on system simulators. For UV1, TLB and GRU instruction physical addresses are identical to socket physical addresses (although high NASID bits must be OR'ed into the address). For UV2, socket physical addresses need to be converted. The NODE portion of the physical address needs to be shifted so that the low bit is in bit 39 or bit 40, depending on an MMR value. It is not yet clear if this bug will be fixed in a silicon respin. If it is fixed, the hub revision will be incremented & the workaround disabled. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | Merge branch 'x86-geode-for-linus' of ↵Linus Torvalds2011-10-283-0/+144
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'x86-geode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: geode: New PCEngines Alix system driver
| * | | x86: geode: New PCEngines Alix system driverEd Wildgoose2011-09-213-0/+144
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This new driver replaces the old PCEngines Alix 2/3 LED driver with a new driver that controls the LEDs through the leds-gpio driver. The old driver accessed GPIOs directly, which created a conflict and prevented also loading the cs5535-gpio driver to read other GPIOs on the Alix board. With this new driver, we hook into leds-gpio which in turn uses GPIO to control the LEDs and therefore it's possible to control both the LEDs and access onboard GPIOs Driver is moved to platform/geode as requested by Grant and any other geode initialisation modules should move here also This driver is inspired by leds-net5501.c by Alessandro Zummo. Ideally, leds-net5501.c should also be moved to platform/geode. Additionally the driver relies on parts of the patch: 7f131cf3ed ("leds: leds-alix2c - take port address from MSR) by Daniel Mack to perform detection of the Alix board. [akpm@linux-foundation.org: include module.h] Signed-off-by: Ed Wildgoose <kernel@wildgooses.com> Cc: git@wildgooses.com Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Daniel Mack <daniel@caiaq.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Richard Purdie <rpurdie@rpsys.net> Reviewed-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | Merge branch 'tty-next' of ↵Linus Torvalds2011-10-261-0/+3
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty * 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (79 commits) TTY: serial_core: Fix crash if DCD drop during suspend tty/serial: atmel_serial: bootconsole removed from auto-enumerates Revert "TTY: call tty_driver_lookup_tty unconditionally" tty/serial: atmel_serial: add device tree support tty/serial: atmel_serial: auto-enumerate ports tty/serial: atmel_serial: whitespace and braces modifications tty/serial: atmel_serial: change platform_data variable name tty/serial: RS485 bindings for device tree TTY: call tty_driver_lookup_tty unconditionally TTY: pty, release tty in all ptmx_open fail paths TTY: make tty_add_file non-failing TTY: drop driver reference in tty_open fail path 8250_pci: Fix kernel panic when pch_uart is disabled h8300: drivers/serial/Kconfig was moved parport_pc: release IO region properly if unsupported ITE887x card is found tty: Support compat_ioctl get/set termios_locked hvc_console: display printk messages on console. TTY: snyclinkmp: forever loop in tx_load_dma_buffer() tty/n_gsm: avoid fifo overflow in gsm_dlci_data_output tty/n_gsm: fix a bug in gsm_dlci_data_output (adaption = 2 case) ... Fix up Conflicts in: - drivers/tty/serial/8250_pci.c Trivial conflict with removed duplicate device ID - drivers/tty/serial/atmel_serial.c Annoying silly conflict between "specify the port num via platform_data" and other changes to atmel_console_init
| * | x86/mrst: Add platform data for Max3110 devicesFeng Tang2011-08-261-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Those info will be used when spi controller driver setup max3110 as a slave device Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | x86, mrst: use a temporary variable for SFI irqMika Westerberg2011-10-141-10/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SFI tables reside in RAM and should not be modified once they are written. Current code went to set pentry->irq to zero which causes subsequent reads to fail with invalid SFI table checksum. This will break kexec as the second kernel fails to validate SFI tables. To fix this we use temporary variable for irq number. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | x86/rtc: Don't recursively acquire rtc_lockMatt Fleming2011-09-211-0/+9
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A deadlock was introduced on x86 in commit ef68c8f87ed1 ("x86: Serialize EFI time accesses on rtc_lock") because efi_get_time() and friends can be called with rtc_lock already held by read_persistent_time(), e.g.: timekeeping_init() read_persistent_clock() <-- acquire rtc_lock efi_get_time() phys_efi_get_time() <-- acquire rtc_lock <DEADLOCK> To fix this let's push the locking down into the get_wallclock() and set_wallclock() implementations. Only the clock implementations that access the x86 RTC directly need to acquire rtc_lock, so it makes sense to push the locking down into the rtc, vrtc and efi code. The virtualization implementations don't require rtc_lock to be held because they provide their own serialization. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Acked-by: Jan Beulich <jbeulich@novell.com> Acked-by: Avi Kivity <avi@redhat.com> [for the virtualization aspect] Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Josh Boyer <jwboyer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | sfi: table irq 0xFF means 'no interrupt'Kirill A. Shutemov2011-08-261-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | According to the SFI specification irq number 0xFF means device has no interrupt or interrupt attached via GPIO. Currently, we don't handle this special case and set irq field in *_board_info structs to 255. It leads to confusion in some drivers. Accelerometer driver tries to register interrupt 255, fails and prints "Cannot get IRQ" to dmesg. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | x86, olpc: Wait for last byte of EC command to be acceptedPaul Fox2011-08-051-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | When executing EC commands, only waiting when there are still more bytes to write is usually fine. However, if the system suspends very quickly after a call to olpc_ec_cmd(), the last data byte may not yet be transferred to the EC, and the command will not complete. This solves a bug where the SCI wakeup mask was not correctly written when going into suspend. It means that sometimes, on XO-1.5 (but not XO-1), the devices that were marked as wakeup sources can't wake up the system. e.g. you ask for wifi wakeups, suspend, but then incoming wifi frames don't wake up the system as they should. Signed-off-by: Paul Fox <pgf@laptop.org> Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Andres Salomon <dilinger@queued.net> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'idle-release' of ↵Linus Torvalds2011-08-033-0/+1052
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: cpuidle: stop depending on pm_idle x86 idle: move mwait_idle_with_hints() to where it is used cpuidle: replace xen access to x86 pm_idle and default_idle cpuidle: create bootparam "cpuidle.off=1" mrst_pmu: driver for Intel Moorestown Power Management Unit
| * mrst_pmu: driver for Intel Moorestown Power Management UnitLen Brown2011-08-033-0/+1052
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Moorestown (MRST) Power Management Unit (PMU) driver directs the SOC power states in the "Langwell" south complex (SCU). It hooks pci_platform_pm_ops[] and thus observes all PCI ".set_state" requests. For devices in the SC, the pmu driver translates those PCI requests into the appropriate commands for the SCU. The PMU driver helps implement S0i3, a deep system idle power idle state. Entry into S0i3 is via cpuidle, just like regular processor c-states. S0i3 depends on pre-conditions including uni-processor, graphics off, and certain IO devices in the SC must be off. If those pre-conditions are met, then the PMU allows cpuidle to enter S0i3, otherwise such requests are demoted, either to Atom C4 or Atom C6. This driver is based on prototype work by Bruce Flemming, Illyas Mansoor, Rajeev D. Muralidhar, Vishwesh M. Rudramuni, Hari Seshadri and Sujith Thomas. The current driver also includes contributions from H. Peter Anvin, Arjan van de Ven, Kristen Accardi, and Yong Wang. Thanks for additional review feedback from Alan Cox and Randy Dunlap. Acked-by: Alan Cox <alan@linux.intel.com> Acked-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
* | Merge branch 'x86-olpc-for-linus' of ↵Linus Torvalds2011-07-269-147/+1404
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, olpc-xo15-sci: Enable EC wakeup capability x86, olpc: Fix dependency on POWER_SUPPLY x86, olpc: Add XO-1.5 SCI driver x86, olpc: Add XO-1 RTC driver x86, olpc-xo1-sci: Propagate power supply/battery events x86, olpc-xo1-sci: Add lid switch functionality x86, olpc-xo1-sci: Add GPE handler and ebook switch functionality x86, olpc: EC SCI wakeup mask functionality x86, olpc: Add XO-1 SCI driver and power button control x86, olpc: Add XO-1 suspend/resume support x86, olpc: Rename olpc-xo1 to olpc-xo1-pm x86, olpc: Move CS5536-related constants to cs5535.h x86, olpc: Add missing elements to device tree
| * | x86, olpc-xo15-sci: Enable EC wakeup capabilityDaniel Drake2011-07-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some recent changes to the way that ACPI handles wakeup flags means that the XO15EC ACPI device is not wakeup-capable by default so device_set_wakeup_enable() does nothing. Use device_init_wakeup() to mark the device as wakeup capable, and to enable wakeups. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/20110724173430.BE03C9D401C@zog.reactivated.net Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, olpc: Add XO-1.5 SCI driverDaniel Drake2011-07-063-0/+178
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a driver for the ACPI-based EC event interface found on the OLPC XO-1.5 laptop. This enables notification of battery/AC power events, and enables various devices to be used as wakeup sources through regular ACPI mechanisms. This driver can't be built as a module, because some drivers need to know at boot-time if SCI-based functionality is available via olpc_ec_wakeup_available(). Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-12-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Add XO-1 RTC driverDaniel Drake2011-07-062-0/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a driver to configure the XO-1 RTC via CS5536 MSRs, to be used as a system wakeup source via olpc-xo1-pm. Device detection is based on finding the relevant device tree node. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-11-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Acked-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc-xo1-sci: Propagate power supply/battery eventsDaniel Drake2011-07-061-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EC events indicate change in AC power connectivity, battery state of charge, battery error, battery presence, etc. Send notifications to the power supply subsystem when changes are detected. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-10-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc-xo1-sci: Add lid switch functionalityDaniel Drake2011-07-061-1/+206
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Configure the XO-1's lid switch GPIO to trigger an SCI interrupt, and correctly expose this input device which can be used as a wakeup source. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-9-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc-xo1-sci: Add GPE handler and ebook switch functionalityDaniel Drake2011-07-061-1/+182
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EC in the OLPC XO-1 delivers GPE events to provide various notifications. Add the basic code for GPE/EC event processing and enable the ebook switch, which can be used as a wakeup source. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-8-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: EC SCI wakeup mask functionalityDaniel Drake2011-07-061-0/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the EC SCI masks with recent additions. Add functions to query SCI events and set the wakeup mask, to be used by followup patches. Add functions to tweak an event mask used to select certain EC events as a system wakeup source. Also add a function to determine if EC wakeup functionality is available, as this depends on child drivers (different for each laptop model) to configure the SCI interrupt. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-7-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Add XO-1 SCI driver and power button controlDaniel Drake2011-07-062-0/+192
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The System Control Interrupt is used in the OLPC XO-1 to control various features of the laptop. Add the driver base and the power button functionality. This driver can't be built as a module, because functionality added in future patches means that some drivers need to know at boot-time whether SCI-based functionality is available. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-6-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Add XO-1 suspend/resume supportDaniel Drake2011-07-063-1/+217
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add code needed for basic suspend/resume of the XO-1 laptop. Based on earlier work by Jordan Crouse, Andres Salomon, and others. This patch incorporates all earlier feedback from Thomas Gleixner. To clarify a certain point (now more obvious in the code itself): On resume, OpenFirmware returns execution to Linux in protected mode with a kernel-compatible GDT already set up. The changes and simplifications suggested have all been included. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-5-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Rename olpc-xo1 to olpc-xo1-pmDaniel Drake2011-07-062-29/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on earlier review comments, we'll no longer try to stick all of our XO-1 goodies in a single driver. We'll split it into a power management driver, and an EC/SCI driver. As a first step, rename olpc-xo1 to olpc-xo1-pm, and make it builtin instead of modular. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-4-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Move CS5536-related constants to cs5535.hDaniel Drake2011-07-061-18/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move these definitions into the relevant header file. This was requested in the review of the upcoming XO-1 suspend/resume code. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-3-git-send-email-dsd@laptop.org Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | x86, olpc: Add missing elements to device treeDaniel Drake2011-07-061-0/+103
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In response to new device tree code in the kernel, OLPC will start using it for probing of certain devices. However, some firmware fixes are needed to put the devicetree into a usable state. Retain compatibility with old firmware by fixing up the device tree at boot-time if it does not contain the new nodes/properties that we need for probing. This is the same approach taken on PPC platforms. Signed-off-by: Daniel Drake <dsd@laptop.org> Link: http://lkml.kernel.org/r/1309019658-1712-2-git-send-email-dsd@laptop.org Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Andres Salomon <dilinger@queued.net> Cc: devicetree-discuss@lists.ozlabs.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* | | Merge branch 'x86-uv-for-linus' of ↵Linus Torvalds2011-07-221-22/+47
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, UV: Correct UV2 BAU destination timeout x86, UV: Correct failed topology memory leak x86, UV: Remove cpumask_t from the stack x86, UV: Rename hubmask to pnmask x86, UV: Correct reset_with_ipi() x86, UV: Allow for non-consecutive sockets x86, UV: Inline header file functions x86, UV: Fix smp_processor_id() use in a preemptable region x66, UV: Enable 64-bit ACPI MFCG support for SGI UV2 platform x86, UV: Clean up uv_mmrs.h
| * | | x86, UV: Correct failed topology memory leakcpw@sgi.com2011-06-211-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a memory leak in init_per_cpu() when the topology check fails. The leak should never occur on deployed systems. It would only occur in an unexpected topology that would make the BAU unuseable as a result. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.981533045@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, UV: Remove cpumask_t from the stackcpw@sgi.com2011-06-211-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the large stack-resident cpumask_t from reset_with_ipi()'s stack by allocating one per uvhub. Due to the limited size of the stack the potentially huge cpumask_t may cause stack overrun. We haven't seen it happen yet, but we need to make it a practice not to push such structures onto the stack. Signed-off-by: Cliff Wickman <cpw@sgi.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Link: http://lkml.kernel.org/r/20110621122242.832589130@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, UV: Rename hubmask to pnmaskcpw@sgi.com2011-06-211-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename 'bau_targ_hubmask' to 'pnmask' for clarity. The BAU distribution bit mask is indexed by pnode number, not hub or blade number. This important fact is not clear while the mask is called a 'hubmask'. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.630995969@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, UV: Correct reset_with_ipi()cpw@sgi.com2011-06-211-12/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix reset_with_ipi() to look up a cpu for a blade based on the distribution map being indexed by the potentially sparsely numbered pnode. This patch is critical to tlb shootdown on a partitioned UV system, or one with nonconsecutive blade numbers. The distribution map bits represent pnodes relative to the partition base pnode. Previous to this patch it had been assuming bits based on 0-based, consecutive blade ids. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.497700003@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, UV: Allow for non-consecutive socketscpw@sgi.com2011-06-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix for the topology in which there is a socket 1 on a blade with no socket 0. Only call make_per_cpu_thp() for present sockets. We have only seen this fail for internal configurations. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.363757364@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86, UV: Fix smp_processor_id() use in a preemptable regioncpw@sgi.com2011-06-211-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a call by tunables_write() to smp_processor_id() within a preemptable region. Call get_cpu()/put_cpu() around the region where the returned cpu number is actually used, which makes it non-preemptable. A DEBUG_PREEMPT warning is prevented. UV does not support cpu hotplug yet, but this is a step toward that ability as well. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.086384966@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | Merge branch 'x86-efi-for-linus' of ↵Linus Torvalds2011-07-221-2/+49
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, efi: Properly pre-initialize table pointers x86, efi: Add infrastructure for UEFI 2.0 runtime services x86, efi: Fix argument types for SetVariable()
| * | | | x86, efi: Properly pre-initialize table pointersJan Beulich2011-07-051-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consumers of the table pointers in struct efi check for EFI_INVALID_TABLE_ADDR to determine validity, hence these pointers should all be pre-initialized to this value (rather than zero). Noticed by the discrepancy between efivars' systab sysfs entry showing all tables (and their pointers) despite the code intending to only display the valid ones. No other bad effects known, but having the various table parsing routines bogusly access physical address zero is certainly not very desirable (even though they're unlikely to find anything useful there). Signed-off-by: Jan Beulich <jbeulich@novell.com> Link: http://lkml.kernel.org/r/4E13100A020000780004C256@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86, efi: Add infrastructure for UEFI 2.0 runtime servicesMatthew Garrett2011-06-061-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're currently missing support for any of the runtime service calls introduced with the UEFI 2.0 spec in 2006. Add the infrastructure for supporting them. Signed-off-by: Matthew Garrett <mjg@redhat.com> Link: http://lkml.kernel.org/r/1307388985-7852-2-git-send-email-mjg@redhat.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| * | | | x86, efi: Fix argument types for SetVariable()Matthew Garrett2011-06-061-1/+1
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | The spec says this takes uint32 for attributes, not uintn. Signed-off-by: Matthew Garrett <mjg@redhat.com> Link: http://lkml.kernel.org/r/1307388985-7852-1-git-send-email-mjg@redhat.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
* | | | Merge branch 'timers-rtc-for-linus' of ↵Linus Torvalds2011-07-221-6/+33
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Serialize EFI time accesses on rtc_lock x86: Serialize SMP bootup CMOS accesses on rtc_lock rtc: stmp3xxx: Remove UIE handlers rtc: stmp3xxx: Get rid of mach-specific accessors rtc: stmp3xxx: Initialize drvdata before registering device rtc: stmp3xxx: Port stmp-functions to mxs-equivalents rtc: stmp3xxx: Restore register definitions rtc: vt8500: Use define instead of hardcoded value for status bit
| * | | x86: Serialize EFI time accesses on rtc_lockJan Beulich2011-07-211-6/+33
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EFI specification requires that callers of the time related runtime functions serialize with other CMOS accesses in the kernel, as the EFI time functions may choose to also use the legacy CMOS RTC. Besides fixing a latent bug, this is a prerequisite to safely enable the rtc-efi driver for x86, which ought to be preferred over rtc-cmos on all EFI platforms. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Matthew Garrett <mjg59@srcf.ucam.org> Cc: <mjg@redhat.com> Link: http://lkml.kernel.org/r/4E257E33020000780004E319@nat28.tlf.novell.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Matthew Garrett <mjg@redhat.com>
* | | x86: Don't use the EFI reboot method by defaultMatthew Garrett2011-07-071-3/+0
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Testing suggests that at least some Lenovos and some Intels will fail to reboot via EFI, attempting to jump to an unmapped physical address. In the long run we could handle this by providing a page table with a 1:1 mapping of physical addresses, but for now it's probably just easier to assume that ACPI or legacy methods will be present and reboot via those. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Cox <alan@linux.intel.com> Link: http://lkml.kernel.org/r/1309985557-15350-1-git-send-email-mjg@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86, efi: Do not reserve boot services regions within reserved areasMaarten Lankhorst2011-06-181-4/+25
|/ | | | | | | | | | | | | | | | | Commit 916f676f8dc started reserving boot service code since some systems require you to keep that code around until SetVirtualAddressMap is called. However, in some cases those areas will overlap with reserved regions. The proper medium-term fix is to fix the bootloader to prevent the conflicts from occurring by moving the kernel to a better position, but the kernel should check for this possibility, and only reserve regions which can be reserved. Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com> Link: http://lkml.kernel.org/r/4DF7A005.1050407@gmail.com Acked-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, efi: Retain boot service code until after switching to virtual modeMatthew Garrett2011-05-252-3/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UEFI stands for "Unified Extensible Firmware Interface", where "Firmware" is an ancient African word meaning "Why do something right when you can do it so wrong that children will weep and brave adults will cower before you", and "UEI" is Celtic for "We missed DOS so we burned it into your ROMs". The UEFI specification provides for runtime services (ie, another way for the operating system to be forced to depend on the firmware) and we rely on these for certain trivial tasks such as setting up the bootloader. But some hardware fails to work if we attempt to use these runtime services from physical mode, and so we have to switch into virtual mode. So far so dreadful. The specification makes it clear that the operating system is free to do whatever it wants with boot services code after ExitBootServices() has been called. SetVirtualAddressMap() can't be called until ExitBootServices() has been. So, obviously, a whole bunch of EFI implementations call into boot services code when we do that. Since we've been charmingly naive and trusted that the specification may be somehow relevant to the real world, we've already stuffed a picture of a penguin or something in that address space. And just to make things more entertaining, we've also marked it non-executable. This patch allocates the boot services regions during EFI init and makes sure that they're executable. Then, after SetVirtualAddressMap(), it discards them and everyone lives happily ever after. Except for the ones who have to work on EFI, who live sad lives haunted by the knowledge that someone's eventually going to write yet another firmware specification. [ hpa: adding this to urgent with a stable tag since it fixes currently-broken hardware. However, I do not know what the dependencies are and so I do not know which -stable versions this may be a candidate for. ] Signed-off-by: Matthew Garrett <mjg@redhat.com> Link: http://lkml.kernel.org/r/1306331593-28715-1-git-send-email-mjg@redhat.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: <stable@kernel.org>
* x86, UV: Clean up uv_tlb.cCliff Wickman2011-05-251-696/+748
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SGI UV's uv_tlb.c driver has become rather hard to read, with overly large functions, non-standard coding style and (way) too long variable, constant and function names and non-obvious code flow sequences. This patch improves the readability and maintainability of the driver significantly, by doing the following strict code cleanups with no side effects: - Split long functions into shorter logical functions. - Shortened some variable and structure member names. - Added special functions for reads and writes of MMR regs with very long names. - Added the 'tunables' table to shortened tunables_write(). - Added the 'stat_description' table to shorten uv_ptc_proc_write(). - Pass fewer 'stat' arguments where it can be derived from the 'bcp' argument. - Function definitions consistent on one line, and inline in few (short) cases. - Moved some small structures and an atomic inline function to the header file. - Moved some local variables to the blocks where they are used. - Updated the copyright date. - Shortened uv_write_global_mmr64() etc. using some aliasing; no line breaks. Renamed many uv_.. functions that are not exported. - Aligned structure fields. [ note that not all structures are aligned the same way though; I'd like to keep the extensive commenting in some of them. ] - Shortened some long structure names. - Standard pass/fail exit from init_per_cpu() - Vertical alignment for mass initializations. - More separation between blocks of code. Tested on a 16-processor Altix UV. Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: penberg@kernel.org Link: http://lkml.kernel.org/r/E1QOw12-0004MN-Lp@eag09.americas.sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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