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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-03 14:23:09 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-07-03 14:23:09 +0200
commit8f8e5c3e2796eaf150d6262115af12707c2616dd (patch)
tree85f3ec09ce6960fd57c85610a5c97841f2ded9ba /drivers/pci
parent9a5f2c871af4cf6bd63ddb20061faa7049103350 (diff)
parentde3ef1eb1cd0cc3a75f7a3661e10ed827f370ab8 (diff)
downloadlinux-8f8e5c3e2796eaf150d6262115af12707c2616dd.tar.bz2
Merge branch 'acpi-pm'
* acpi-pm: PM / core: Drop run_wake flag from struct dev_pm_info PCI / PM: Simplify device wakeup settings code PCI / PM: Drop pme_interrupt flag from struct pci_dev ACPI / PM: Consolidate device wakeup settings code ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags ACPI / sleep: EC-based wakeup from suspend-to-idle on recent systems platform: x86: intel-hid: Wake up the system from suspend-to-idle platform: x86: intel-vbtn: Wake up the system from suspend-to-idle ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle platform/x86: Add driver for ACPI INT0002 Virtual GPIO device PCI / PM: Restore PME Enable if skipping wakeup setup PM / sleep: Print timing information if debug is enabled ACPI / PM: Clean up device wakeup enable/disable code ACPI / PM: Change log level of wakeup-related message USB / PCI / PM: Allow the PCI core to do the resume cleanup ACPI / PM: Run wakeup notify handlers synchronously Conflicts: drivers/base/power/main.c
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci-acpi.c90
-rw-r--r--drivers/pci/pci-driver.c2
-rw-r--r--drivers/pci/pci-mid.c10
-rw-r--r--drivers/pci/pci.c68
-rw-r--r--drivers/pci/pci.h9
-rw-r--r--drivers/pci/pcie/pme.c16
6 files changed, 71 insertions, 124 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 47070cff508c..e70c1c7ba1bf 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -394,29 +394,26 @@ bool pciehp_is_native(struct pci_dev *pdev)
/**
* pci_acpi_wake_bus - Root bus wakeup notification fork function.
- * @work: Work item to handle.
+ * @context: Device wakeup context.
*/
-static void pci_acpi_wake_bus(struct work_struct *work)
+static void pci_acpi_wake_bus(struct acpi_device_wakeup_context *context)
{
struct acpi_device *adev;
struct acpi_pci_root *root;
- adev = container_of(work, struct acpi_device, wakeup.context.work);
+ adev = container_of(context, struct acpi_device, wakeup.context);
root = acpi_driver_data(adev);
pci_pme_wakeup_bus(root->bus);
}
/**
* pci_acpi_wake_dev - PCI device wakeup notification work function.
- * @handle: ACPI handle of a device the notification is for.
- * @work: Work item to handle.
+ * @context: Device wakeup context.
*/
-static void pci_acpi_wake_dev(struct work_struct *work)
+static void pci_acpi_wake_dev(struct acpi_device_wakeup_context *context)
{
- struct acpi_device_wakeup_context *context;
struct pci_dev *pci_dev;
- context = container_of(work, struct acpi_device_wakeup_context, work);
pci_dev = to_pci_dev(context->dev);
if (pci_dev->pme_poll)
@@ -424,7 +421,7 @@ static void pci_acpi_wake_dev(struct work_struct *work)
if (pci_dev->current_state == PCI_D3cold) {
pci_wakeup_event(pci_dev);
- pm_runtime_resume(&pci_dev->dev);
+ pm_request_resume(&pci_dev->dev);
return;
}
@@ -433,7 +430,7 @@ static void pci_acpi_wake_dev(struct work_struct *work)
pci_check_pme_status(pci_dev);
pci_wakeup_event(pci_dev);
- pm_runtime_resume(&pci_dev->dev);
+ pm_request_resume(&pci_dev->dev);
pci_pme_wakeup_bus(pci_dev->subordinate);
}
@@ -572,67 +569,29 @@ static pci_power_t acpi_pci_get_power_state(struct pci_dev *dev)
return state_conv[state];
}
-static bool acpi_pci_can_wakeup(struct pci_dev *dev)
-{
- struct acpi_device *adev = ACPI_COMPANION(&dev->dev);
- return adev ? acpi_device_can_wakeup(adev) : false;
-}
-
-static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable)
-{
- while (bus->parent) {
- if (!acpi_pm_device_sleep_wake(&bus->self->dev, enable))
- return;
- bus = bus->parent;
- }
-
- /* We have reached the root bus. */
- if (bus->bridge)
- acpi_pm_device_sleep_wake(bus->bridge, enable);
-}
-
-static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
-{
- if (acpi_pci_can_wakeup(dev))
- return acpi_pm_device_sleep_wake(&dev->dev, enable);
-
- acpi_pci_propagate_wakeup_enable(dev->bus, enable);
- return 0;
-}
-
-static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
+static int acpi_pci_propagate_wakeup(struct pci_bus *bus, bool enable)
{
while (bus->parent) {
- struct pci_dev *bridge = bus->self;
+ if (acpi_pm_device_can_wakeup(&bus->self->dev))
+ return acpi_pm_set_device_wakeup(&bus->self->dev, enable);
- if (bridge->pme_interrupt)
- return;
- if (!acpi_pm_device_run_wake(&bridge->dev, enable))
- return;
bus = bus->parent;
}
/* We have reached the root bus. */
- if (bus->bridge)
- acpi_pm_device_run_wake(bus->bridge, enable);
+ if (bus->bridge) {
+ if (acpi_pm_device_can_wakeup(bus->bridge))
+ return acpi_pm_set_device_wakeup(bus->bridge, enable);
+ }
+ return 0;
}
-static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
+static int acpi_pci_wakeup(struct pci_dev *dev, bool enable)
{
- /*
- * Per PCI Express Base Specification Revision 2.0 section
- * 5.3.3.2 Link Wakeup, platform support is needed for D3cold
- * waking up to power on the main link even if there is PME
- * support for D3cold
- */
- if (dev->pme_interrupt && !dev->runtime_d3cold)
- return 0;
-
- if (!acpi_pm_device_run_wake(&dev->dev, enable))
- return 0;
+ if (acpi_pm_device_can_wakeup(&dev->dev))
+ return acpi_pm_set_device_wakeup(&dev->dev, enable);
- acpi_pci_propagate_run_wake(dev->bus, enable);
- return 0;
+ return acpi_pci_propagate_wakeup(dev->bus, enable);
}
static bool acpi_pci_need_resume(struct pci_dev *dev)
@@ -656,8 +615,7 @@ static const struct pci_platform_pm_ops acpi_pci_platform_pm = {
.set_state = acpi_pci_set_power_state,
.get_state = acpi_pci_get_power_state,
.choose_state = acpi_pci_choose_state,
- .sleep_wake = acpi_pci_sleep_wake,
- .run_wake = acpi_pci_run_wake,
+ .set_wakeup = acpi_pci_wakeup,
.need_resume = acpi_pci_need_resume,
};
@@ -780,9 +738,7 @@ static void pci_acpi_setup(struct device *dev)
return;
device_set_wakeup_capable(dev, true);
- acpi_pci_sleep_wake(pci_dev, false);
- if (adev->wakeup.flags.run_wake)
- device_set_run_wake(dev, true);
+ acpi_pci_wakeup(pci_dev, false);
}
static void pci_acpi_cleanup(struct device *dev)
@@ -793,10 +749,8 @@ static void pci_acpi_cleanup(struct device *dev)
return;
pci_acpi_remove_pm_notifier(adev);
- if (adev->wakeup.flags.valid) {
+ if (adev->wakeup.flags.valid)
device_set_wakeup_capable(dev, false);
- device_set_run_wake(dev, false);
- }
}
static bool pci_acpi_bus_match(struct device *dev)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 192e7b681b96..ffe7d54d9328 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1216,7 +1216,7 @@ static int pci_pm_runtime_resume(struct device *dev)
pci_restore_standard_config(pci_dev);
pci_fixup_device(pci_fixup_resume_early, pci_dev);
- __pci_enable_wake(pci_dev, PCI_D0, true, false);
+ pci_enable_wake(pci_dev, PCI_D0, false);
pci_fixup_device(pci_fixup_resume, pci_dev);
rc = pm->runtime_resume(dev);
diff --git a/drivers/pci/pci-mid.c b/drivers/pci/pci-mid.c
index 1c4af7227bca..a4ac940c7696 100644
--- a/drivers/pci/pci-mid.c
+++ b/drivers/pci/pci-mid.c
@@ -39,12 +39,7 @@ static pci_power_t mid_pci_choose_state(struct pci_dev *pdev)
return PCI_D3hot;
}
-static int mid_pci_sleep_wake(struct pci_dev *dev, bool enable)
-{
- return 0;
-}
-
-static int mid_pci_run_wake(struct pci_dev *dev, bool enable)
+static int mid_pci_wakeup(struct pci_dev *dev, bool enable)
{
return 0;
}
@@ -59,8 +54,7 @@ static const struct pci_platform_pm_ops mid_pci_platform_pm = {
.set_state = mid_pci_set_power_state,
.get_state = mid_pci_get_power_state,
.choose_state = mid_pci_choose_state,
- .sleep_wake = mid_pci_sleep_wake,
- .run_wake = mid_pci_run_wake,
+ .set_wakeup = mid_pci_wakeup,
.need_resume = mid_pci_need_resume,
};
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 563901cd9c06..0b5302a9fdae 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -574,8 +574,7 @@ static const struct pci_platform_pm_ops *pci_platform_pm;
int pci_set_platform_pm(const struct pci_platform_pm_ops *ops)
{
if (!ops->is_manageable || !ops->set_state || !ops->get_state ||
- !ops->choose_state || !ops->sleep_wake || !ops->run_wake ||
- !ops->need_resume)
+ !ops->choose_state || !ops->set_wakeup || !ops->need_resume)
return -EINVAL;
pci_platform_pm = ops;
return 0;
@@ -603,16 +602,10 @@ static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev)
pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR;
}
-static inline int platform_pci_sleep_wake(struct pci_dev *dev, bool enable)
+static inline int platform_pci_set_wakeup(struct pci_dev *dev, bool enable)
{
return pci_platform_pm ?
- pci_platform_pm->sleep_wake(dev, enable) : -ENODEV;
-}
-
-static inline int platform_pci_run_wake(struct pci_dev *dev, bool enable)
-{
- return pci_platform_pm ?
- pci_platform_pm->run_wake(dev, enable) : -ENODEV;
+ pci_platform_pm->set_wakeup(dev, enable) : -ENODEV;
}
static inline bool platform_pci_need_resume(struct pci_dev *dev)
@@ -1805,6 +1798,23 @@ static void __pci_pme_active(struct pci_dev *dev, bool enable)
pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
}
+static void pci_pme_restore(struct pci_dev *dev)
+{
+ u16 pmcsr;
+
+ if (!dev->pme_support)
+ return;
+
+ pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
+ if (dev->wakeup_prepared) {
+ pmcsr |= PCI_PM_CTRL_PME_ENABLE;
+ } else {
+ pmcsr &= ~PCI_PM_CTRL_PME_ENABLE;
+ pmcsr |= PCI_PM_CTRL_PME_STATUS;
+ }
+ pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
+}
+
/**
* pci_pme_active - enable or disable PCI device's PME# function
* @dev: PCI device to handle.
@@ -1872,10 +1882,9 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
EXPORT_SYMBOL(pci_pme_active);
/**
- * __pci_enable_wake - enable PCI device as wakeup event source
+ * pci_enable_wake - enable PCI device as wakeup event source
* @dev: PCI device affected
* @state: PCI state from which device will issue wakeup events
- * @runtime: True if the events are to be generated at run time
* @enable: True to enable event generation; false to disable
*
* This enables the device as a wakeup event source, or disables it.
@@ -1891,17 +1900,18 @@ EXPORT_SYMBOL(pci_pme_active);
* Error code depending on the platform is returned if both the platform and
* the native mechanism fail to enable the generation of wake-up events
*/
-int __pci_enable_wake(struct pci_dev *dev, pci_power_t state,
- bool runtime, bool enable)
+int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable)
{
int ret = 0;
- if (enable && !runtime && !device_may_wakeup(&dev->dev))
- return -EINVAL;
-
- /* Don't do the same thing twice in a row for one device. */
- if (!!enable == !!dev->wakeup_prepared)
+ /*
+ * Don't do the same thing twice in a row for one device, but restore
+ * PME Enable in case it has been updated by config space restoration.
+ */
+ if (!!enable == !!dev->wakeup_prepared) {
+ pci_pme_restore(dev);
return 0;
+ }
/*
* According to "PCI System Architecture" 4th ed. by Tom Shanley & Don
@@ -1916,24 +1926,20 @@ int __pci_enable_wake(struct pci_dev *dev, pci_power_t state,
pci_pme_active(dev, true);
else
ret = 1;
- error = runtime ? platform_pci_run_wake(dev, true) :
- platform_pci_sleep_wake(dev, true);
+ error = platform_pci_set_wakeup(dev, true);
if (ret)
ret = error;
if (!ret)
dev->wakeup_prepared = true;
} else {
- if (runtime)
- platform_pci_run_wake(dev, false);
- else
- platform_pci_sleep_wake(dev, false);
+ platform_pci_set_wakeup(dev, false);
pci_pme_active(dev, false);
dev->wakeup_prepared = false;
}
return ret;
}
-EXPORT_SYMBOL(__pci_enable_wake);
+EXPORT_SYMBOL(pci_enable_wake);
/**
* pci_wake_from_d3 - enable/disable device to wake up from D3_hot or D3_cold
@@ -2075,12 +2081,12 @@ int pci_finish_runtime_suspend(struct pci_dev *dev)
dev->runtime_d3cold = target_state == PCI_D3cold;
- __pci_enable_wake(dev, target_state, true, pci_dev_run_wake(dev));
+ pci_enable_wake(dev, target_state, pci_dev_run_wake(dev));
error = pci_set_power_state(dev, target_state);
if (error) {
- __pci_enable_wake(dev, target_state, true, false);
+ pci_enable_wake(dev, target_state, false);
dev->runtime_d3cold = false;
}
@@ -2099,7 +2105,7 @@ bool pci_dev_run_wake(struct pci_dev *dev)
{
struct pci_bus *bus = dev->bus;
- if (device_run_wake(&dev->dev))
+ if (device_can_wakeup(&dev->dev))
return true;
if (!dev->pme_support)
@@ -2112,7 +2118,7 @@ bool pci_dev_run_wake(struct pci_dev *dev)
while (bus->parent) {
struct pci_dev *bridge = bus->self;
- if (device_run_wake(&bridge->dev))
+ if (device_can_wakeup(&bridge->dev))
return true;
bus = bus->parent;
@@ -2120,7 +2126,7 @@ bool pci_dev_run_wake(struct pci_dev *dev)
/* We have reached the root bus. */
if (bus->bridge)
- return device_run_wake(bus->bridge);
+ return device_can_wakeup(bus->bridge);
return false;
}
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f8113e5b9812..240b2c0fed4b 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -47,11 +47,7 @@ int pci_probe_reset_function(struct pci_dev *dev);
* platform; to be used during system-wide transitions from a
* sleeping state to the working state and vice versa
*
- * @sleep_wake: enables/disables the system wake up capability of given device
- *
- * @run_wake: enables/disables the platform to generate run-time wake-up events
- * for given device (the device's wake-up capability has to be
- * enabled by @sleep_wake for this feature to work)
+ * @set_wakeup: enables/disables wakeup capability for the device
*
* @need_resume: returns 'true' if the given device (which is currently
* suspended) needs to be resumed to be configured for system
@@ -65,8 +61,7 @@ struct pci_platform_pm_ops {
int (*set_state)(struct pci_dev *dev, pci_power_t state);
pci_power_t (*get_state)(struct pci_dev *dev);
pci_power_t (*choose_state)(struct pci_dev *dev);
- int (*sleep_wake)(struct pci_dev *dev, bool enable);
- int (*run_wake)(struct pci_dev *dev, bool enable);
+ int (*set_wakeup)(struct pci_dev *dev, bool enable);
bool (*need_resume)(struct pci_dev *dev);
};
diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
index 2dd1c68e6de8..80e58d25006d 100644
--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -294,31 +294,29 @@ static irqreturn_t pcie_pme_irq(int irq, void *context)
}
/**
- * pcie_pme_set_native - Set the PME interrupt flag for given device.
+ * pcie_pme_can_wakeup - Set the wakeup capability flag.
* @dev: PCI device to handle.
* @ign: Ignored.
*/
-static int pcie_pme_set_native(struct pci_dev *dev, void *ign)
+static int pcie_pme_can_wakeup(struct pci_dev *dev, void *ign)
{
- device_set_run_wake(&dev->dev, true);
- dev->pme_interrupt = true;
+ device_set_wakeup_capable(&dev->dev, true);
return 0;
}
/**
- * pcie_pme_mark_devices - Set the PME interrupt flag for devices below a port.
+ * pcie_pme_mark_devices - Set the wakeup flag for devices below a port.
* @port: PCIe root port or event collector to handle.
*
* For each device below given root port, including the port itself (or for each
* root complex integrated endpoint if @port is a root complex event collector)
- * set the flag indicating that it can signal run-time wake-up events via PCIe
- * PME interrupts.
+ * set the flag indicating that it can signal run-time wake-up events.
*/
static void pcie_pme_mark_devices(struct pci_dev *port)
{
- pcie_pme_set_native(port, NULL);
+ pcie_pme_can_wakeup(port, NULL);
if (port->subordinate)
- pci_walk_bus(port->subordinate, pcie_pme_set_native, NULL);
+ pci_walk_bus(port->subordinate, pcie_pme_can_wakeup, NULL);
}
/**