diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-22 13:36:52 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-22 13:36:52 -0700 |
commit | 7100e505b76b4e2efd88b2459d1a932214e29f8a (patch) | |
tree | a8eae8687dc1511c89463b1eb93c8349a7471ab3 | |
parent | cb47c1831fa406c964468b259f2082c16cc3f757 (diff) | |
parent | 75a4161a58dd157a2bd2dc8e9986e45b62ac46cf (diff) |
Merge tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
- ACPI conversion to PM handling based on struct dev_pm_ops.
- Conversion of a number of platform drivers to PM handling based on
struct dev_pm_ops and removal of empty legacy PM callbacks from a
couple of PCI drivers.
- Suspend-to-both for in-kernel hibernation from Bojan Smojver.
- cpuidle fixes and cleanups from ShuoX Liu, Daniel Lezcano and Preeti
Murthy.
- cpufreq bug fixes from Jonghwa Lee and Stephen Boyd.
- Suspend and hibernate fixes from Srivatsa Bhat and Colin Cross.
- Generic PM domains framework updates.
- RTC CMOS wakeup signaling update from Paul Fox.
- sparse warnings fixes from Sachin Kamat.
- Build warnings fixes for the generic PM domains framework and PM
sysfs code.
- sysfs switch for printing device suspend times from Sameer Nanda.
- Documentation fix from Oskar Schirmer.
* tag 'pm-for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (70 commits)
cpufreq: Fix sysfs deadlock with concurrent hotplug/frequency switch
EXYNOS: bugfix on retrieving old_index from freqs.old
PM / Sleep: call early resume handlers when suspend_noirq fails
PM / QoS: Use NULL pointer instead of plain integer in qos.c
PM / QoS: Use NULL pointer instead of plain integer in pm_qos.h
PM / Sleep: Require CAP_BLOCK_SUSPEND to use wake_lock/wake_unlock
PM / Sleep: Add missing static storage class specifiers in main.c
cpuilde / ACPI: remove time from acpi_processor_cx structure
cpuidle / ACPI: remove usage from acpi_processor_cx structure
cpuidle / ACPI : remove latency_ticks from acpi_processor_cx structure
rtc-cmos: report wakeups from interrupt handler
PM / Sleep: Fix build warning in sysfs.c for CONFIG_PM_SLEEP unset
PM / Domains: Fix build warning for CONFIG_PM_RUNTIME unset
olpc-xo15-sci: Use struct dev_pm_ops for power management
PM / Domains: Replace plain integer with NULL pointer in domain.c file
PM / Domains: Add missing static storage class specifier in domain.c file
PM / crypto / ux500: Use struct dev_pm_ops for power management
PM / IPMI: Remove empty legacy PCI PM callbacks
tpm_nsc: Use struct dev_pm_ops for power management
tpm_tis: Use struct dev_pm_ops for power management
...
65 files changed, 887 insertions, 479 deletions
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power index 31725ffeeb3a..217772615d02 100644 --- a/Documentation/ABI/testing/sysfs-power +++ b/Documentation/ABI/testing/sysfs-power @@ -231,3 +231,16 @@ Description: Reads from this file return a string consisting of the names of wakeup sources created with the help of /sys/power/wake_lock that are inactive at the moment, separated with spaces. + +What: /sys/power/pm_print_times +Date: May 2012 +Contact: Sameer Nanda <snanda@chromium.org> +Description: + The /sys/power/pm_print_times file allows user space to + control whether the time taken by devices to suspend and + resume is printed. These prints are useful for hunting down + devices that take too long to suspend or resume. + + Writing a "1" enables this printing while writing a "0" + disables it. The default value is "0". Reading from this file + will display the current value. diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt index 872815cd41d3..504dfe4d52eb 100644 --- a/Documentation/power/devices.txt +++ b/Documentation/power/devices.txt @@ -583,9 +583,10 @@ for the given device during all power transitions, instead of the respective subsystem-level callbacks. Specifically, if a device's pm_domain pointer is not NULL, the ->suspend() callback from the object pointed to by it will be executed instead of its subsystem's (e.g. bus type's) ->suspend() callback and -anlogously for all of the remaining callbacks. In other words, power management -domain callbacks, if defined for the given device, always take precedence over -the callbacks provided by the device's subsystem (e.g. bus type). +analogously for all of the remaining callbacks. In other words, power +management domain callbacks, if defined for the given device, always take +precedence over the callbacks provided by the device's subsystem (e.g. bus +type). The support for device power management domains is only relevant to platforms needing to use the same device driver power management callbacks in many @@ -598,7 +599,7 @@ it into account in any way. Device Low Power (suspend) States --------------------------------- Device low-power states aren't standard. One device might only handle -"on" and "off, while another might support a dozen different versions of +"on" and "off", while another might support a dozen different versions of "on" (how many engines are active?), plus a state that gets back to "on" faster than from a full "off". diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index ac190cf1963e..92341b84250d 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -33,6 +33,11 @@ echo shutdown > /sys/power/disk; echo disk > /sys/power/state echo platform > /sys/power/disk; echo disk > /sys/power/state +. If you would like to write hibernation image to swap and then suspend +to RAM (provided your platform supports it), you can try + +echo suspend > /sys/power/disk; echo disk > /sys/power/state + . If you have SATA disks, you'll need recent kernels with SATA suspend support. For suspend and resume to work, make sure your disk drivers are built into kernel -- not modules. [There's way to make diff --git a/arch/x86/platform/olpc/olpc-xo15-sci.c b/arch/x86/platform/olpc/olpc-xo15-sci.c index 23e5b9d7977b..599be499fdf7 100644 --- a/arch/x86/platform/olpc/olpc-xo15-sci.c +++ b/arch/x86/platform/olpc/olpc-xo15-sci.c @@ -203,7 +203,7 @@ static int xo15_sci_remove(struct acpi_device *device, int type) return 0; } -static int xo15_sci_resume(struct acpi_device *device) +static int xo15_sci_resume(struct device *dev) { /* Enable all EC events */ olpc_ec_mask_write(EC_SCI_SRC_ALL); @@ -215,6 +215,8 @@ static int xo15_sci_resume(struct acpi_device *device) return 0; } +static SIMPLE_DEV_PM_OPS(xo15_sci_pm, NULL, xo15_sci_resume); + static const struct acpi_device_id xo15_sci_device_ids[] = { {"XO15EC", 0}, {"", 0}, @@ -227,8 +229,8 @@ static struct acpi_driver xo15_sci_drv = { .ops = { .add = xo15_sci_add, .remove = xo15_sci_remove, - .resume = xo15_sci_resume, }, + .drv.pm = &xo15_sci_pm, }; static int __init xo15_sci_init(void) diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 6512b20aeccd..ff9f6bd48301 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -61,7 +61,6 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file); static int acpi_ac_add(struct acpi_device *device); static int acpi_ac_remove(struct acpi_device *device, int type); -static int acpi_ac_resume(struct acpi_device *device); static void acpi_ac_notify(struct acpi_device *device, u32 event); static const struct acpi_device_id ac_device_ids[] = { @@ -70,6 +69,9 @@ static const struct acpi_device_id ac_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, ac_device_ids); +static int acpi_ac_resume(struct device *dev); +static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume); + static struct acpi_driver acpi_ac_driver = { .name = "ac", .class = ACPI_AC_CLASS, @@ -78,9 +80,9 @@ static struct acpi_driver acpi_ac_driver = { .ops = { .add = acpi_ac_add, .remove = acpi_ac_remove, - .resume = acpi_ac_resume, .notify = acpi_ac_notify, }, + .drv.pm = &acpi_ac_pm, }; struct acpi_ac { @@ -309,13 +311,18 @@ static int acpi_ac_add(struct acpi_device *device) return result; } -static int acpi_ac_resume(struct acpi_device *device) +static int acpi_ac_resume(struct device *dev) { struct acpi_ac *ac; unsigned old_state; - if (!device || !acpi_driver_data(device)) + + if (!dev) return -EINVAL; - ac = acpi_driver_data(device); + + ac = acpi_driver_data(to_acpi_device(dev)); + if (!ac) + return -EINVAL; + old_state = ac->state; if (acpi_ac_get_state(ac)) return 0; diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 7dd3f9fb9f3f..023f9c8534d0 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -1044,17 +1044,24 @@ static int acpi_battery_remove(struct acpi_device *device, int type) } /* this is needed to learn about changes made in suspended state */ -static int acpi_battery_resume(struct acpi_device *device) +static int acpi_battery_resume(struct device *dev) { struct acpi_battery *battery; - if (!device) + + if (!dev) return -EINVAL; - battery = acpi_driver_data(device); + + battery = acpi_driver_data(to_acpi_device(dev)); + if (!battery) + return -EINVAL; + battery->update_time = 0; acpi_battery_update(battery); return 0; } +static SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume); + static struct acpi_driver acpi_battery_driver = { .name = "battery", .class = ACPI_BATTERY_CLASS, @@ -1062,10 +1069,10 @@ static struct acpi_driver acpi_battery_driver = { .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, .ops = { .add = acpi_battery_add, - .resume = acpi_battery_resume, .remove = acpi_battery_remove, .notify = acpi_battery_notify, }, + .drv.pm = &acpi_battery_pm, }; static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index d27d072472f9..79d4c22f7a6d 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -76,19 +76,21 @@ MODULE_DEVICE_TABLE(acpi, button_device_ids); static int acpi_button_add(struct acpi_device *device); static int acpi_button_remove(struct acpi_device *device, int type); -static int acpi_button_resume(struct acpi_device *device); static void acpi_button_notify(struct acpi_device *device, u32 event); +static int acpi_button_resume(struct device *dev); +static SIMPLE_DEV_PM_OPS(acpi_button_pm, NULL, acpi_button_resume); + static struct acpi_driver acpi_button_driver = { .name = "button", .class = ACPI_BUTTON_CLASS, .ids = button_device_ids, .ops = { .add = acpi_button_add, - .resume = acpi_button_resume, .remove = acpi_button_remove, .notify = acpi_button_notify, }, + .drv.pm = &acpi_button_pm, }; struct acpi_button { @@ -308,8 +310,9 @@ static void acpi_button_notify(struct acpi_device *device, u32 event) } } -static int acpi_button_resume(struct acpi_device *device) +static int acpi_button_resume(struct device *dev) { + struct acpi_device *device = to_acpi_device(dev); struct acpi_button *button = acpi_driver_data(device); if (button->type == ACPI_BUTTON_TYPE_LID) diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 0f0356ca1a9e..669d9ee80d16 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -46,8 +46,6 @@ MODULE_LICENSE("GPL"); static int acpi_fan_add(struct acpi_device *device); static int acpi_fan_remove(struct acpi_device *device, int type); -static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state); -static int acpi_fan_resume(struct acpi_device *device); static const struct acpi_device_id fan_device_ids[] = { {"PNP0C0B", 0}, @@ -55,6 +53,10 @@ static const struct acpi_device_id fan_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, fan_device_ids); +static int acpi_fan_suspend(struct device *dev); +static int acpi_fan_resume(struct device *dev); +static SIMPLE_DEV_PM_OPS(acpi_fan_pm, acpi_fan_suspend, acpi_fan_resume); + static struct acpi_driver acpi_fan_driver = { .name = "fan", .class = ACPI_FAN_CLASS, @@ -62,9 +64,8 @@ static struct acpi_driver acpi_fan_driver = { .ops = { .add = acpi_fan_add, .remove = acpi_fan_remove, - .suspend = acpi_fan_suspend, - .resume = acpi_fan_resume, }, + .drv.pm = &acpi_fan_pm, }; /* thermal cooling device callbacks */ @@ -183,24 +184,24 @@ static int acpi_fan_remove(struct acpi_device *device, int type) return 0; } -static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state) +static int acpi_fan_suspend(struct device *dev) { - if (!device) + if (!dev) return -EINVAL; - acpi_bus_set_power(device->handle, ACPI_STATE_D0); + acpi_bus_set_power(to_acpi_device(dev)->handle, ACPI_STATE_D0); return AE_OK; } -static int acpi_fan_resume(struct acpi_device *device) +static int acpi_fan_resume(struct device *dev) { int result; - if (!device) + if (!dev) return -EINVAL; - result = acpi_bus_update_power(device->handle, NULL); + result = acpi_bus_update_power(to_acpi_device(dev)->handle, NULL); if (result) printk(KERN_ERR PREFIX "Error updating fan power state\n"); diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index dd6d6a3c6780..894d45c6bc67 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -60,7 +60,6 @@ ACPI_MODULE_NAME("power"); static int acpi_power_add(struct acpi_device *device); static int acpi_power_remove(struct acpi_device *device, int type); -static int acpi_power_resume(struct acpi_device *device); static const struct acpi_device_id power_device_ids[] = { {ACPI_POWER_HID, 0}, @@ -68,6 +67,9 @@ static const struct acpi_device_id power_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, power_device_ids); +static int acpi_power_resume(struct device *dev); +static SIMPLE_DEV_PM_OPS(acpi_power_pm, NULL, acpi_power_resume); + static struct acpi_driver acpi_power_driver = { .name = "power", .class = ACPI_POWER_CLASS, @@ -75,8 +77,8 @@ static struct acpi_driver acpi_power_driver = { .ops = { .add = acpi_power_add, .remove = acpi_power_remove, - .resume = acpi_power_resume, }, + .drv.pm = &acpi_power_pm, }; /* @@ -771,14 +773,16 @@ static int acpi_power_remove(struct acpi_device *device, int type) return 0; } -static int acpi_power_resume(struct acpi_device *device) +static int acpi_power_resume(struct device *dev) { int result = 0, state; + struct acpi_device *device; struct acpi_power_resource *resource; - if (!device) + if (!dev) return -EINVAL; + device = to_acpi_device(dev); resource = acpi_driver_data(device); if (!resource) return -EINVAL; diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 0734086537b8..7048b97853e0 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -93,6 +93,9 @@ static const struct acpi_device_id processor_device_ids[] = { }; MODULE_DEVICE_TABLE(acpi, processor_device_ids); +static SIMPLE_DEV_PM_OPS(acpi_processor_pm, + acpi_processor_suspend, acpi_processor_resume); + static struct acpi_driver acpi_processor_driver = { .name = "processor", .class = ACPI_PROCESSOR_CLASS, @@ -100,10 +103,9 @@ static struct acpi_driver acpi_processor_driver = { .ops = { .add = acpi_processor_add, .remove = acpi_processor_remove, - .suspend = acpi_processor_suspend, - .resume = acpi_processor_resume, .notify = acpi_processor_notify, }, + .drv.pm = &acpi_processor_pm, }; #define INSTALL_NOTIFY_HANDLER 1 @@ -427,18 +429,11 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb, * Initialize missing things */ if (pr->flags.need_hotplug_init) { - struct cpuidle_driver *idle_driver = - cpuidle_get_driver(); - printk(KERN_INFO "Will online and init hotplugged " "CPU: %d\n", pr->id); WARN(acpi_processor_start(pr), "Failed to start CPU:" " %d\n", pr->id); pr->flags.need_hotplug_init = 0; - if (idle_driver && !strcmp(idle_driver->name, - "intel_idle")) { - intel_idle_cpu_init(pr->id); - } /* Normal CPU soft online event */ } else { acpi_processor_ppc_has_changed(pr, 0); diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 47a8caa89dbe..e589c1985248 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -221,10 +221,6 @@ static void lapic_timer_state_broadcast(struct acpi_processor *pr, #endif -/* - * Suspend / resume control - */ -static int acpi_idle_suspend; static u32 saved_bm_rld; static void acpi_idle_bm_rld_save(void) @@ -241,23 +237,15 @@ static void acpi_idle_bm_rld_restore(void) acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld); } -int acpi_processor_suspend(struct acpi_device * device, pm_message_t state) +int acpi_processor_suspend(struct device *dev) { - if (acpi_idle_suspend == 1) - return 0; - acpi_idle_bm_rld_save(); - acpi_idle_suspend = 1; return 0; } -int acpi_processor_resume(struct acpi_device * device) +int acpi_processor_resume(struct device *dev) { - if (acpi_idle_suspend == 0) - return 0; - acpi_idle_bm_rld_restore(); - acpi_idle_suspend = 0; return 0; } @@ -595,7 +583,6 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr, */ cx->valid = 1; - cx->latency_ticks = cx->latency; /* * On older chipsets, BM_RLD needs to be set * in order for Bus Master activity to wake the @@ -628,7 +615,6 @@ static int acpi_processor_power_verify(struct acpi_processor *pr) if (!cx->address) break; cx->valid = 1; - cx->latency_ticks = cx->latency; /* Normalize latency */ break; case ACPI_STATE_C3: @@ -763,11 +749,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, local_irq_disable(); - if (acpi_idle_suspend) { - local_irq_enable(); - cpu_relax(); - return -EBUSY; - } lapic_timer_state_broadcast(pr, cx, 1); kt1 = ktime_get_real(); @@ -779,7 +760,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, dev->last_residency = (int)idle_time; local_irq_enable(); - cx->usage++; lapic_timer_state_broadcast(pr, cx, 0); return index; @@ -838,11 +818,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, local_irq_disable(); - if (acpi_idle_suspend) { - local_irq_enable(); - cpu_relax(); - return -EBUSY; - } if (cx->entry_method != ACPI_CSTATE_FFH) { current_thread_info()->status &= ~TS_POLLING; @@ -887,10 +862,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, if (cx->entry_method != ACPI_CSTATE_FFH) current_thread_info()->status |= TS_POLLING; - cx->usage++; - lapic_timer_state_broadcast(pr, cx, 0); - cx->time += idle_time; return index; } @@ -928,8 +900,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, drv, drv->safe_state_index); } else { local_irq_disable(); - if (!acpi_idle_suspend) - acpi_safe_halt(); + acpi_safe_halt(); local_irq_enable(); return -EBUSY; } @@ -937,11 +908,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, local_irq_disable(); - if (acpi_idle_suspend) { - local_irq_enable(); - cpu_relax(); - return -EBUSY; - } if (cx->entry_method != ACPI_CSTATE_FFH) { current_thread_info()->status &= ~TS_POLLING; @@ -1014,10 +980,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, if (cx->entry_method != ACPI_CSTATE_FFH) current_thread_info()->status |= TS_POLLING; - cx->usage++; - lapic_timer_state_broadcast(pr, cx, 0); - cx->time += idle_time; return index; } diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index 6e36d0c0057c..c0b9aa5faf4c 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -988,16 +988,18 @@ static void acpi_sbs_rmdirs(void) |