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AgeCommit message (Expand)Author
2010-10-17PM: Fix unmet dependency warning from kconfigRafael J. Wysocki
2010-10-17PM / Hibernate: Compress hibernation image with LZOBojan Smojver
2010-06-10suspend: Move NVS save/restore code to generic suspend functionalityMatthew Garrett
2010-02-26PM: Add facility for advanced testing of async suspend/resumeRafael J. Wysocki
2010-02-22PCI PM: Run-time callbacks for PCI bus typeRafael J. Wysocki
2009-08-23PM: Introduce core framework for run-time PM of I/O devices (rev. 17)Rafael J. Wysocki
2009-06-12PM/Hibernate: Move NVS routines into a seperate file (v2).Cornelia Huck
2008-11-01PM_TEST_SUSPEND should depend on RTC_CLASS, not RTC_LIBAl Viro
2008-10-20container freezer: implement freezer cgroup subsystemMatt Helsley
2008-10-20container freezer: make refrigerator always availableMatt Helsley
2008-07-24pm: boot time suspend selftestDavid Brownell
2008-07-17x86, xen, power: fix up config dependencies on PMJeremy Fitzhardinge
2008-07-16Revert "suspend, xen: enable PM_SLEEP for CONFIG_XEN"Ingo Molnar
2008-07-16suspend, xen: enable PM_SLEEP for CONFIG_XENJeremy Fitzhardinge
2008-04-15PM: Remove legacy PMPavel Machek
2008-03-12documentation: Move power-related files to Documentation/power/Randy Dunlap
2008-02-07PM: documentation cleanupsPavel Machek
2008-02-01Suspend: Add config option to disable the freezer if architecture wants thatJohannes Berg
2008-02-01Suspend: Clean up Kconfig (V2)Johannes Berg
2008-02-01Hibernation: Clean up Kconfig (V2)Johannes Berg
2008-02-01PM: Make PM_TRACE more architecture independentJohannes Berg
2007-10-18serial: turn serial console suspend a boot rather than compile time optionAndres Salomon
2007-09-26hibernation doesn't even build on frv - tons of helpers are missingAl Viro
2007-08-31PM: Fix dependencies of CONFIG_SUSPEND and CONFIG_HIBERNATIONRafael J. Wysocki
2007-07-29Introduce CONFIG_SUSPEND for suspend-to-Ram and standbyRafael J. Wysocki
2007-07-29Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATIONRafael J. Wysocki
2007-07-21x86: PM_TRACE supportNigel Cunningham
2007-07-19PM: Do not require dev spew to get PM_DEBUGBen Collins
2007-07-18PM: Remove deprecated sysfs filesAlan Stern
2007-05-08Merge branch 'linux-2.6'Paul Mackerras
2007-05-07kconfig: mention 'hibernation' not just swsuspDavid Brownell
2007-05-07[POWERPC] powermac: Suspend to disk on G5Johannes Berg
2007-03-06[PATCH] kconfig: Update swsusp descriptionRafael J. Wysocki
2007-02-09[APM] Add shared version of APM emulationRalf Baechle
2006-12-13Driver core: deprecate PM_LEGACY, default it to NDavid Brownell
2006-12-07[PATCH] swsusp: Support i386 systems with PAE or without PSERafael J. Wysocki
2006-09-26Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
2006-09-26[PATCH] PM: make it possible to disable console suspendingRafael J. Wysocki
2006-09-25PM: add kconfig option for deprecated .../power/state filesDavid Brownell
2006-09-06[PATCH] prevent swsusp with PAEPavel Machek
2006-06-30remove obsolete swsusp_encryptPavel Machek
2006-06-27[PATCH] pm_trace is dangerousAndrew Morton
2006-06-25Fix PM_TRACE dependency: works only on 32-bit x86 for nowLinus Torvalds
2006-06-24Add some basic resume trace facilitiesLinus Torvalds
2006-04-01help text: SOFTWARE_SUSPEND doesn't need ACPIAdrian Bunk
2006-01-15SOFTWARE_SUSPEND: fix a typo in the dependenciesAdrian Bunk
2005-11-13[PATCH] move pm_register/etc. to CONFIG_PM_LEGACY, pm_legacy.hJeff Garzik
2005-09-22[PATCH] SOFTWARE_SUSPEND needs HOTPLUG_CPU on SMPRandy Dunlap
2005-09-08Merge linux-2.6 with linux-acpi-2.6Len Brown
2005-09-07[PATCH] swsusp: update documentationPavel Machek
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-09 19:38:06 +0000
ass="p">); EXPORT_SYMBOL(i8253_lock); #ifdef CONFIG_CLKSRC_I8253 /* * Since the PIT overflows every tick, its not very useful * to just read by itself. So use jiffies to emulate a free * running counter: */ static cycle_t i8253_read(struct clocksource *cs) { static int old_count; static u32 old_jifs; unsigned long flags; int count; u32 jifs; raw_spin_lock_irqsave(&i8253_lock, flags); /* * Although our caller may have the read side of jiffies_lock, * this is now a seqlock, and we are cheating in this routine * by having side effects on state that we cannot undo if * there is a collision on the seqlock and our caller has to * retry. (Namely, old_jifs and old_count.) So we must treat * jiffies as volatile despite the lock. We read jiffies * before latching the timer count to guarantee that although * the jiffies value might be older than the count (that is, * the counter may underflow between the last point where * jiffies was incremented and the point where we latch the * count), it cannot be newer. */ jifs = jiffies; outb_p(0x00, PIT_MODE); /* latch the count ASAP */ count = inb_p(PIT_CH0); /* read the latched count */ count |= inb_p(PIT_CH0) << 8; /* VIA686a test code... reset the latch if count > max + 1 */ if (count > PIT_LATCH) { outb_p(0x34, PIT_MODE); outb_p(PIT_LATCH & 0xff, PIT_CH0); outb_p(PIT_LATCH >> 8, PIT_CH0); count = PIT_LATCH - 1; } /* * It's possible for count to appear to go the wrong way for a * couple of reasons: * * 1. The timer counter underflows, but we haven't handled the * resulting interrupt and incremented jiffies yet. * 2. Hardware problem with the timer, not giving us continuous time, * the counter does small "jumps" upwards on some Pentium systems, * (see c't 95/10 page 335 for Neptun bug.) * * Previous attempts to handle these cases intelligently were * buggy, so we just do the simple thing now. */ if (count > old_count && jifs == old_jifs) count = old_count; old_count = count; old_jifs = jifs; raw_spin_unlock_irqrestore(&i8253_lock, flags); count = (PIT_LATCH - 1) - count; return (cycle_t)(jifs * PIT_LATCH) + count; } static struct clocksource i8253_cs = { .name = "pit", .rating = 110, .read = i8253_read, .mask = CLOCKSOURCE_MASK(32), }; int __init clocksource_i8253_init(void) { return clocksource_register_hz(&i8253_cs, PIT_TICK_RATE); } #endif #ifdef CONFIG_CLKEVT_I8253 static int pit_shutdown(struct clock_event_device *evt) { if (!clockevent_state_oneshot(evt) && !clockevent_state_periodic(evt)) return 0; raw_spin_lock(&i8253_lock); outb_p(0x30, PIT_MODE); outb_p(0, PIT_CH0); outb_p(0, PIT_CH0); raw_spin_unlock(&i8253_lock); return 0; } static int pit_set_oneshot(struct clock_event_device *evt) { raw_spin_lock(&i8253_lock); outb_p(0x38, PIT_MODE); raw_spin_unlock(&i8253_lock); return 0; } static int pit_set_periodic(struct clock_event_device *evt) { raw_spin_lock(&i8253_lock); /* binary, mode 2, LSB/MSB, ch 0 */ outb_p(0x34, PIT_MODE); outb_p(PIT_LATCH & 0xff, PIT_CH0); /* LSB */ outb_p(PIT_LATCH >> 8, PIT_CH0); /* MSB */ raw_spin_unlock(&i8253_lock); return 0; } /* * Program the next event in oneshot mode * * Delta is given in PIT ticks */ static int pit_next_event(unsigned long delta, struct clock_event_device *evt) { raw_spin_lock(&i8253_lock); outb_p(delta & 0xff , PIT_CH0); /* LSB */ outb_p(delta >> 8 , PIT_CH0); /* MSB */ raw_spin_unlock(&i8253_lock); return 0; } /* * On UP the PIT can serve all of the possible timer functions. On SMP systems * it can be solely used for the global tick. */ struct clock_event_device i8253_clockevent = { .name = "pit", .features = CLOCK_EVT_FEAT_PERIODIC, .set_state_shutdown = pit_shutdown, .set_state_periodic = pit_set_periodic, .set_next_event = pit_next_event, }; /* * Initialize the conversion factor and the min/max deltas of the clock event * structure and register the clock event source with the framework. */ void __init clockevent_i8253_init(bool oneshot) { if (oneshot) { i8253_clockevent.features |= CLOCK_EVT_FEAT_ONESHOT; i8253_clockevent.set_state_oneshot = pit_set_oneshot; } /* * Start pit with the boot cpu mask. x86 might make it global * when it is used as broadcast device later. */ i8253_clockevent.cpumask = cpumask_of(smp_processor_id()); clockevents_config_and_register(&i8253_clockevent, PIT_TICK_RATE, 0xF, 0x7FFF); } #endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-09 19:38:03 +0000