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-rw-r--r--drivers/acpi/processor_idle.c2
-rw-r--r--drivers/base/platform.c6
-rw-r--r--drivers/base/power/runtime.c10
-rw-r--r--drivers/base/power/sysfs.c65
-rw-r--r--drivers/cpuidle/governors/ladder.c2
-rw-r--r--drivers/cpuidle/governors/menu.c2
-rw-r--r--drivers/i2c/i2c-core.c166
-rw-r--r--drivers/net/e1000e/netdev.c22
-rw-r--r--drivers/net/igbvf/netdev.c6
-rw-r--r--drivers/net/wireless/ipw2x00/ipw2100.c11
10 files changed, 192 insertions, 100 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 5939e7f7d8e..c3817e1f32c 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -698,7 +698,7 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
"max_cstate: C%d\n"
"maximum allowed latency: %d usec\n",
pr->power.state ? pr->power.state - pr->power.states : 0,
- max_cstate, pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY));
+ max_cstate, pm_qos_request(PM_QOS_CPU_DMA_LATENCY));
seq_puts(seq, "states:\n");
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 765bcf0df3b..ada6397c23a 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -967,17 +967,17 @@ static int platform_pm_restore_noirq(struct device *dev)
int __weak platform_pm_runtime_suspend(struct device *dev)
{
- return -ENOSYS;
+ return pm_generic_runtime_suspend(dev);
};
int __weak platform_pm_runtime_resume(struct device *dev)
{
- return -ENOSYS;
+ return pm_generic_runtime_resume(dev);
};
int __weak platform_pm_runtime_idle(struct device *dev)
{
- return -ENOSYS;
+ return pm_generic_runtime_idle(dev);
};
#else /* !CONFIG_PM_RUNTIME */
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 626dd147b75..b0ec0e9f27e 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -229,14 +229,16 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq)
if (retval) {
dev->power.runtime_status = RPM_ACTIVE;
- pm_runtime_cancel_pending(dev);
-
if (retval == -EAGAIN || retval == -EBUSY) {
- notify = true;
+ if (dev->power.timer_expires == 0)
+ notify = true;
dev->power.runtime_error = 0;
+ } else {
+ pm_runtime_cancel_pending(dev);
}
} else {
dev->power.runtime_status = RPM_SUSPENDED;
+ pm_runtime_deactivate_timer(dev);
if (dev->parent) {
parent = dev->parent;
@@ -659,8 +661,6 @@ int pm_schedule_suspend(struct device *dev, unsigned int delay)
if (dev->power.runtime_status == RPM_SUSPENDED)
retval = 1;
- else if (dev->power.runtime_status == RPM_SUSPENDING)
- retval = -EINPROGRESS;
else if (atomic_read(&dev->power.usage_count) > 0
|| dev->power.disable_depth > 0)
retval = -EAGAIN;
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 86fd9373447..a4c33bc5125 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -5,6 +5,7 @@
#include <linux/device.h>
#include <linux/string.h>
#include <linux/pm_runtime.h>
+#include <asm/atomic.h>
#include "power.h"
/*
@@ -143,7 +144,59 @@ wake_store(struct device * dev, struct device_attribute *attr,
static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
-#ifdef CONFIG_PM_SLEEP_ADVANCED_DEBUG
+#ifdef CONFIG_PM_ADVANCED_DEBUG
+#ifdef CONFIG_PM_RUNTIME
+
+static ssize_t rtpm_usagecount_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", atomic_read(&dev->power.usage_count));
+}
+
+static ssize_t rtpm_children_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", dev->power.ignore_children ?
+ 0 : atomic_read(&dev->power.child_count));
+}
+
+static ssize_t rtpm_enabled_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if ((dev->power.disable_depth) && (dev->power.runtime_auto == false))
+ return sprintf(buf, "disabled & forbidden\n");
+ else if (dev->power.disable_depth)
+ return sprintf(buf, "disabled\n");
+ else if (dev->power.runtime_auto == false)
+ return sprintf(buf, "forbidden\n");
+ return sprintf(buf, "enabled\n");
+}
+
+static ssize_t rtpm_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (dev->power.runtime_error)
+ return sprintf(buf, "error\n");
+ switch (dev->power.runtime_status) {
+ case RPM_SUSPENDED:
+ return sprintf(buf, "suspended\n");
+ case RPM_SUSPENDING:
+ return sprintf(buf, "suspending\n");
+ case RPM_RESUMING:
+ return sprintf(buf, "resuming\n");
+ case RPM_ACTIVE:
+ return sprintf(buf, "active\n");
+ }
+ return -EIO;
+}
+
+static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL);
+static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL);
+static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
+static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL);
+
+#endif
+
static ssize_t async_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -170,15 +223,21 @@ static ssize_t async_store(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR(async, 0644, async_show, async_store);
-#endif /* CONFIG_PM_SLEEP_ADVANCED_DEBUG */
+#endif /* CONFIG_PM_ADVANCED_DEBUG */
static struct attribute * power_attrs[] = {
#ifdef CONFIG_PM_RUNTIME
&dev_attr_control.attr,
#endif
&dev_attr_wakeup.attr,
-#ifdef CONFIG_PM_SLEEP_ADVANCED_DEBUG
+#ifdef CONFIG_PM_ADVANCED_DEBUG
&dev_attr_async.attr,
+#ifdef CONFIG_PM_RUNTIME
+ &dev_attr_runtime_usage.attr,
+ &dev_attr_runtime_active_kids.attr,
+ &dev_attr_runtime_status.attr,
+ &dev_attr_runtime_enabled.attr,
+#endif
#endif
NULL,
};
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index 1c1ceb4f218..12c98900dcf 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -67,7 +67,7 @@ static int ladder_select_state(struct cpuidle_device *dev)
struct ladder_device *ldev = &__get_cpu_var(ladder_devices);
struct ladder_device_state *last_state;
int last_residency, last_idx = ldev->last_state_idx;
- int latency_req = pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY);
+ int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
/* Special case when user has set very strict latency requirement */
if (unlikely(latency_req == 0)) {
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index f8e57c6303f..b81ad9c731a 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -182,7 +182,7 @@ static u64 div_round64(u64 dividend, u32 divisor)
static int menu_select(struct cpuidle_device *dev)
{
struct menu_device *data = &__get_cpu_var(menu_devices);
- int latency_req = pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY);
+ int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
int i;
int multiplier;
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index c2258a51fe0..7c469a62c3c 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -159,107 +159,131 @@ static void i2c_device_shutdown(struct device *dev)
driver->shutdown(client);
}
-#ifdef CONFIG_SUSPEND
-static int i2c_device_pm_suspend(struct device *dev)
+#ifdef CONFIG_PM_SLEEP
+static int i2c_legacy_suspend(struct device *dev, pm_message_t mesg)
{
- const struct dev_pm_ops *pm;
+ struct i2c_client *client = i2c_verify_client(dev);
+ struct i2c_driver *driver;
- if (!dev->driver)
+ if (!client || !dev->driver)
return 0;
- pm = dev->driver->pm;
- if (!pm || !pm->suspend)
+ driver = to_i2c_driver(dev->driver);
+ if (!driver->suspend)
return 0;
- return pm->suspend(dev);
+ return driver->suspend(client, mesg);
}
-static int i2c_device_pm_resume(struct device *dev)
+static int i2c_legacy_resume(struct device *dev)
{
- const struct dev_pm_ops *pm;
+ struct i2c_client *client = i2c_verify_client(dev);
+ struct i2c_driver *driver;
- if (!dev->driver)
+ if (!client || !dev->driver)
return 0;
- pm = dev->driver->pm;
- if (!pm || !pm->resume)
+ driver = to_i2c_driver(dev->driver);
+ if (!driver->resume)
return 0;
- return pm->resume(dev);
+ return driver->resume(client);
}
-#else
-#define i2c_device_pm_suspend NULL
-#define i2c_device_pm_resume NULL
-#endif
-#ifdef CONFIG_PM_RUNTIME
-static int i2c_device_runtime_suspend(struct device *dev)
+static int i2c_device_pm_suspend(struct device *dev)
{
- const struct dev_pm_ops *pm;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- if (!dev->driver)
- return 0;
- pm = dev->driver->pm;
- if (!pm || !pm->runtime_suspend)
+ if (pm_runtime_suspended(dev))
return 0;
- return pm->runtime_suspend(dev);
-}
-static int i2c_device_runtime_resume(struct device *dev)
-{
- const struct dev_pm_ops *pm;
+ if (pm)
+ return pm->suspend ? pm->suspend(dev) : 0;
- if (!dev->driver)
- return 0;
- pm = dev->driver->pm;
- if (!pm || !pm->runtime_resume)
- return 0;
- return pm->runtime_resume(dev);
+ return i2c_legacy_suspend(dev, PMSG_SUSPEND);
}
-static int i2c_device_runtime_idle(struct device *dev)
+static int i2c_device_pm_resume(struct device *dev)
{
- const struct dev_pm_ops *pm = NULL;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int ret;
- if (dev->driver)
- pm = dev->driver->pm;
- if (pm && pm->runtime_idle) {
- ret = pm->runtime_idle(dev);
- if (ret)
- return ret;
+ if (pm)
+ ret = pm->resume ? pm->resume(dev) : 0;
+ else
+ ret = i2c_legacy_resume(dev);
+
+ if (!ret) {
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
}
- return pm_runtime_suspend(dev);
+ return ret;
}
-#else
-#define i2c_device_runtime_suspend NULL
-#define i2c_device_runtime_resume NULL
-#define i2c_device_runtime_idle NULL
-#endif
-static int i2c_device_suspend(struct device *dev, pm_message_t mesg)
+static int i2c_device_pm_freeze(struct device *dev)
{
- struct i2c_client *client = i2c_verify_client(dev);
- struct i2c_driver *driver;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- if (!client || !dev->driver)
+ if (pm_runtime_suspended(dev))
return 0;
- driver = to_i2c_driver(dev->driver);
- if (!driver->suspend)
- return 0;
- return driver->suspend(client, mesg);
+
+ if (pm)
+ return pm->freeze ? pm->freeze(dev) : 0;
+
+ return i2c_legacy_suspend(dev, PMSG_FREEZE);
}
-static int i2c_device_resume(struct device *dev)
+static int i2c_device_pm_thaw(struct device *dev)
{
- struct i2c_client *client = i2c_verify_client(dev);
- struct i2c_driver *driver;
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
- if (!client || !dev->driver)
+ if (pm_runtime_suspended(dev))
return 0;
- driver = to_i2c_driver(dev->driver);
- if (!driver->resume)
+
+ if (pm)
+ return pm->thaw ? pm->thaw(dev) : 0;
+
+ return i2c_legacy_resume(dev);
+}
+
+static int i2c_device_pm_poweroff(struct device *dev)
+{
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+
+ if (pm_runtime_suspended(dev))
return 0;
- return driver->resume(client);
+
+ if (pm)
+ return pm->poweroff ? pm->poweroff(dev) : 0;
+
+ return i2c_legacy_suspend(dev, PMSG_HIBERNATE);
}
+static int i2c_device_pm_restore(struct device *dev)
+{
+ const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
+ int ret;
+
+ if (pm)
+ ret = pm->restore ? pm->restore(dev) : 0;
+ else
+ ret = i2c_legacy_resume(dev);
+
+ if (!ret) {
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ }
+
+ return ret;
+}
+#else /* !CONFIG_PM_SLEEP */
+#define i2c_device_pm_suspend NULL
+#define i2c_device_pm_resume NULL
+#define i2c_device_pm_freeze NULL
+#define i2c_device_pm_thaw NULL
+#define i2c_device_pm_poweroff NULL
+#define i2c_device_pm_restore NULL
+#endif /* !CONFIG_PM_SLEEP */
+
static void i2c_client_dev_release(struct device *dev)
{
kfree(to_i2c_client(dev));
@@ -301,9 +325,15 @@ static const struct attribute_group *i2c_dev_attr_groups[] = {
static const struct dev_pm_ops i2c_device_pm_ops = {
.suspend = i2c_device_pm_suspend,
.resume = i2c_device_pm_resume,
- .runtime_suspend = i2c_device_runtime_suspend,
- .runtime_resume = i2c_device_runtime_resume,
- .runtime_idle = i2c_device_runtime_idle,
+ .freeze = i2c_device_pm_freeze,
+ .thaw = i2c_device_pm_thaw,
+ .poweroff = i2c_device_pm_poweroff,
+ .restore = i2c_device_pm_restore,
+ SET_RUNTIME_PM_OPS(
+ pm_generic_runtime_suspend,
+ pm_generic_runtime_resume,
+ pm_generic_runtime_idle
+ )
};
struct bus_type i2c_bus_type = {
@@ -312,8 +342,6 @@ struct bus_type i2c_bus_type = {
.probe = i2c_device_probe,
.remove = i2c_device_remove,
.shutdown = i2c_device_shutdown,
- .suspend = i2c_device_suspend,
- .resume = i2c_device_resume,
.pm = &i2c_device_pm_ops,
};
EXPORT_SYMBOL_GPL(i2c_bus_type);
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index dbf81788bb4..d5d55c6a373 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2524,12 +2524,12 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
* excessive C-state transition latencies result in
* dropped transactions.
*/
- pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
- adapter->netdev->name, 55);
+ pm_qos_update_request(
+ adapter->netdev->pm_qos_req, 55);
} else {
- pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY,
- adapter->netdev->name,
- PM_QOS_DEFAULT_VALUE);
+ pm_qos_update_request(
+ adapter->netdev->pm_qos_req,
+ PM_QOS_DEFAULT_VALUE);
}
}
@@ -2824,8 +2824,8 @@ int e1000e_up(struct e1000_adapter *adapter)
/* DMA latency requirement to workaround early-receive/jumbo issue */
if (adapter->flags & FLAG_HAS_ERT)
- pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
- adapter->netdev->name,
+ adapter->netdev->pm_qos_req =
+ pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
/* hardware has been reset, we need to reload some things */
@@ -2887,9 +2887,11 @@ void e1000e_down(struct e1000_adapter *adapter)
e1000_clean_tx_ring(adapter);
e1000_clean_rx_ring(adapter);
- if (adapter->flags & FLAG_HAS_ERT)
- pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
- adapter->netdev->name);
+ if (adapter->flags & FLAG_HAS_ERT) {
+ pm_qos_remove_request(
+ adapter->netdev->pm_qos_req);
+ adapter->netdev->pm_qos_req = NULL;
+ }
/*
* TODO: for power management, we could drop the link and
diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index 1b1edad1eb5..f16e981812a 100644
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -48,6 +48,7 @@
#define DRV_VERSION "1.0.0-k0"
char igbvf_driver_name[] = "igbvf";
const char igbvf_driver_version[] = DRV_VERSION;
+struct pm_qos_request_list *igbvf_driver_pm_qos_req;
static const char igbvf_driver_string[] =
"Intel(R) Virtual Function Network Driver";
static const char igbvf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
@@ -2899,7 +2900,7 @@ static int __init igbvf_init_module(void)
printk(KERN_INFO "%s\n", igbvf_copyright);
ret = pci_register_driver(&igbvf_driver);
- pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name,
+ igbvf_driver_pm_qos_req = pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
return ret;
@@ -2915,7 +2916,8 @@ module_init(igbvf_init_module);
static void __exit igbvf_exit_module(void)
{
pci_unregister_driver(&igbvf_driver);
- pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, igbvf_driver_name);
+ pm_qos_remove_request(igbvf_driver_pm_qos_req);
+ igbvf_driver_pm_qos_req = NULL;
}
module_exit(igbvf_exit_module);
diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
index 9b72c45a774..2b05fe5e994 100644
--- a/drivers/net/wireless/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/ipw2x00/ipw2100.c
@@ -174,6 +174,8 @@ that only one external action is invoked at a time.
#define DRV_DESCRIPTION "Intel(R) PRO/Wireless 2100 Network Driver"
#define DRV_COPYRIGHT "Copyright(c) 2003-2006 Intel Corporation"
+struct pm_qos_request_list *ipw2100_pm_qos_req;
+
/* Debugging stuff */
#ifdef CONFIG_IPW2100_DEBUG
#define IPW2100_RX_DEBUG /* Reception debugging */
@@ -1739,7 +1741,7 @@ static int ipw2100_up(struct ipw2100_priv *priv, int deferred)
/* the ipw2100 hardware really doesn't want power management delays
* longer than 175usec
*/
- pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100", 175);
+ pm_qos_update_request(ipw2100_pm_qos_req, 175);
/* If the interrupt is enabled, turn it off... */
spin_lock_irqsave(&priv->low_lock, flags);
@@ -1887,8 +1889,7 @@ static void ipw2100_down(struct ipw2100_priv *priv)
ipw2100_disable_interrupts(priv);
spin_unlock_irqrestore(&priv->low_lock, flags);
- pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
- PM_QOS_DEFAULT_VALUE);
+ pm_qos_update_request(ipw2100_pm_qos_req, PM_QOS_DEFAULT_VALUE);
/* We have to signal any supplicant if we are disassociating */
if (associated)
@@ -6669,7 +6670,7 @@ static int __init ipw2100_init(void)
if (ret)
goto out;
- pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
+ ipw2100_pm_qos_req = pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
#ifdef CONFIG_IPW2100_DEBUG
ipw2100_debug_level = debug;
@@ -6692,7 +6693,7 @@ static void __exit ipw2100_exit(void)
&driver_attr_debug_level);
#endif
pci_unregister_driver(&ipw2100_pci_driver);
- pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100");
+ pm_qos_remove_request(ipw2100_pm_qos_req);
}
module_init(ipw2100_init);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-22 15:33:59 +0000