mirror of https://gitee.com/openkylin/linux.git
Merge branch 'd3' into release
Conflicts: drivers/acpi/sleep.c This was a text conflict betweena2ef5c4fd4(ACPI: Move module parameter gts and bfs to sleep.c) which added #include <linux/module.h> andb24e509885(ACPI, PCI: Move acpi_dev_run_wake() to ACPI core) which added #include <linux/pm_runtime.h> The resolution was to take them both. Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown
commit
ec612fcf43
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@ -40,9 +40,11 @@
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/pm_runtime.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#include "sleep.h"
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#include "internal.h"
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#define PREFIX "ACPI: "
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@ -77,6 +79,20 @@ static struct acpi_driver acpi_power_driver = {
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},
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};
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/*
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* A power managed device
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* A device may rely on multiple power resources.
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* */
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struct acpi_power_managed_device {
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struct device *dev; /* The physical device */
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acpi_handle *handle;
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};
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struct acpi_power_resource_device {
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struct acpi_power_managed_device *device;
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struct acpi_power_resource_device *next;
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};
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struct acpi_power_resource {
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struct acpi_device * device;
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acpi_bus_id name;
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@ -84,6 +100,9 @@ struct acpi_power_resource {
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u32 order;
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unsigned int ref_count;
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struct mutex resource_lock;
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/* List of devices relying on this power resource */
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struct acpi_power_resource_device *devices;
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};
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static struct list_head acpi_power_resource_list;
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@ -183,8 +202,26 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
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return 0;
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}
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/* Resume the device when all power resources in _PR0 are on */
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static void acpi_power_on_device(struct acpi_power_managed_device *device)
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{
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struct acpi_device *acpi_dev;
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acpi_handle handle = device->handle;
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int state;
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if (acpi_bus_get_device(handle, &acpi_dev))
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return;
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if(acpi_power_get_inferred_state(acpi_dev, &state))
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return;
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if (state == ACPI_STATE_D0 && pm_runtime_suspended(device->dev))
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pm_request_resume(device->dev);
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}
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static int __acpi_power_on(struct acpi_power_resource *resource)
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{
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struct acpi_power_resource_device *device_list = resource->devices;
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acpi_status status = AE_OK;
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status = acpi_evaluate_object(resource->device->handle, "_ON", NULL, NULL);
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@ -197,6 +234,12 @@ static int __acpi_power_on(struct acpi_power_resource *resource)
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Power resource [%s] turned on\n",
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resource->name));
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while (device_list) {
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acpi_power_on_device(device_list->device);
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device_list = device_list->next;
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}
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return 0;
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}
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@ -299,6 +342,125 @@ static int acpi_power_on_list(struct acpi_handle_list *list)
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return result;
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}
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static void __acpi_power_resource_unregister_device(struct device *dev,
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acpi_handle res_handle)
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{
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struct acpi_power_resource *resource = NULL;
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struct acpi_power_resource_device *prev, *curr;
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if (acpi_power_get_context(res_handle, &resource))
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return;
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mutex_lock(&resource->resource_lock);
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prev = NULL;
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curr = resource->devices;
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while (curr) {
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if (curr->device->dev == dev) {
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if (!prev)
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resource->devices = curr->next;
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else
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prev->next = curr->next;
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kfree(curr);
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break;
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}
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prev = curr;
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curr = curr->next;
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}
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mutex_unlock(&resource->resource_lock);
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}
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/* Unlink dev from all power resources in _PR0 */
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void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle)
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{
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struct acpi_device *acpi_dev;
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struct acpi_handle_list *list;
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int i;
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if (!dev || !handle)
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return;
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if (acpi_bus_get_device(handle, &acpi_dev))
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return;
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list = &acpi_dev->power.states[ACPI_STATE_D0].resources;
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for (i = 0; i < list->count; i++)
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__acpi_power_resource_unregister_device(dev,
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list->handles[i]);
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}
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static int __acpi_power_resource_register_device(
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struct acpi_power_managed_device *powered_device, acpi_handle handle)
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{
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struct acpi_power_resource *resource = NULL;
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struct acpi_power_resource_device *power_resource_device;
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int result;
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result = acpi_power_get_context(handle, &resource);
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if (result)
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return result;
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power_resource_device = kzalloc(
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sizeof(*power_resource_device), GFP_KERNEL);
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if (!power_resource_device)
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return -ENOMEM;
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power_resource_device->device = powered_device;
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mutex_lock(&resource->resource_lock);
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power_resource_device->next = resource->devices;
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resource->devices = power_resource_device;
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mutex_unlock(&resource->resource_lock);
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return 0;
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}
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/* Link dev to all power resources in _PR0 */
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int acpi_power_resource_register_device(struct device *dev, acpi_handle handle)
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{
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struct acpi_device *acpi_dev;
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struct acpi_handle_list *list;
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struct acpi_power_managed_device *powered_device;
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int i, ret;
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if (!dev || !handle)
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return -ENODEV;
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ret = acpi_bus_get_device(handle, &acpi_dev);
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if (ret)
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goto no_power_resource;
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if (!acpi_dev->power.flags.power_resources)
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goto no_power_resource;
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powered_device = kzalloc(sizeof(*powered_device), GFP_KERNEL);
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if (!powered_device)
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return -ENOMEM;
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powered_device->dev = dev;
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powered_device->handle = handle;
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list = &acpi_dev->power.states[ACPI_STATE_D0].resources;
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for (i = 0; i < list->count; i++) {
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ret = __acpi_power_resource_register_device(powered_device,
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list->handles[i]);
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if (ret) {
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acpi_power_resource_unregister_device(dev, handle);
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break;
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}
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}
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return ret;
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no_power_resource:
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printk(KERN_WARNING PREFIX "Invalid Power Resource to register!");
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return -ENODEV;
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}
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/**
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* acpi_device_sleep_wake - execute _DSW (Device Sleep Wake) or (deprecated in
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* ACPI 3.0) _PSW (Power State Wake)
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@ -500,14 +662,14 @@ int acpi_power_transition(struct acpi_device *device, int state)
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{
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int result;
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if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
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if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
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return -EINVAL;
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if (device->power.state == state)
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return 0;
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if ((device->power.state < ACPI_STATE_D0)
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|| (device->power.state > ACPI_STATE_D3))
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|| (device->power.state > ACPI_STATE_D3_COLD))
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return -ENODEV;
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/* TBD: Resources must be ordered. */
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@ -884,6 +884,13 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
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acpi_bus_add_power_resource(ps->resources.handles[j]);
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}
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/* The exist of _PR3 indicates D3Cold support */
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if (i == ACPI_STATE_D3) {
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status = acpi_get_handle(device->handle, object_name, &handle);
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if (ACPI_SUCCESS(status))
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device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1;
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}
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/* Evaluate "_PSx" to see if we can do explicit sets */
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object_name[2] = 'S';
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status = acpi_get_handle(device->handle, object_name, &handle);
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@ -18,6 +18,7 @@
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#include <linux/reboot.h>
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#include <linux/acpi.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <asm/io.h>
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@ -752,6 +753,40 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_SLEEP
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/**
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* acpi_pm_device_run_wake - Enable/disable wake-up for given device.
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* @phys_dev: Device to enable/disable the platform to wake-up the system for.
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* @enable: Whether enable or disable the wake-up functionality.
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*
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* Find the ACPI device object corresponding to @pci_dev and try to
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* enable/disable the GPE associated with it.
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*/
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int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
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{
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struct acpi_device *dev;
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acpi_handle handle;
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if (!device_run_wake(phys_dev))
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return -EINVAL;
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handle = DEVICE_ACPI_HANDLE(phys_dev);
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if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
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dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
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__func__);
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return -ENODEV;
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}
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if (enable) {
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acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
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acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
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} else {
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acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
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acpi_disable_wakeup_device_power(dev);
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}
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return 0;
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}
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/**
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* acpi_pm_device_sleep_wake - enable or disable the system wake-up
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* capability of given device
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@ -277,40 +277,6 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
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return 0;
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}
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/**
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* acpi_dev_run_wake - Enable/disable wake-up for given device.
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* @phys_dev: Device to enable/disable the platform to wake-up the system for.
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* @enable: Whether enable or disable the wake-up functionality.
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*
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* Find the ACPI device object corresponding to @pci_dev and try to
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* enable/disable the GPE associated with it.
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*/
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static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
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{
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struct acpi_device *dev;
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acpi_handle handle;
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if (!device_run_wake(phys_dev))
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return -EINVAL;
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handle = DEVICE_ACPI_HANDLE(phys_dev);
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if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
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dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
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__func__);
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return -ENODEV;
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}
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if (enable) {
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acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
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acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
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} else {
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acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
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acpi_disable_wakeup_device_power(dev);
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}
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return 0;
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}
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static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
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{
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while (bus->parent) {
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@ -318,14 +284,14 @@ static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
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if (bridge->pme_interrupt)
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return;
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if (!acpi_dev_run_wake(&bridge->dev, enable))
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if (!acpi_pm_device_run_wake(&bridge->dev, enable))
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return;
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bus = bus->parent;
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}
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/* We have reached the root bus. */
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if (bus->bridge)
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acpi_dev_run_wake(bus->bridge, enable);
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acpi_pm_device_run_wake(bus->bridge, enable);
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}
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static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
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@ -333,7 +299,7 @@ static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
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if (dev->pme_interrupt)
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return 0;
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if (!acpi_dev_run_wake(&dev->dev, enable))
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if (!acpi_pm_device_run_wake(&dev->dev, enable))
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return 0;
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acpi_pci_propagate_run_wake(dev->bus, enable);
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@ -323,6 +323,8 @@ int acpi_bus_set_power(acpi_handle handle, int state);
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int acpi_bus_update_power(acpi_handle handle, int *state_p);
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bool acpi_bus_power_manageable(acpi_handle handle);
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bool acpi_bus_can_wakeup(acpi_handle handle);
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int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
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void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
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#ifdef CONFIG_ACPI_PROC_EVENT
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int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
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int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
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@ -392,8 +394,13 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
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#endif
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#ifdef CONFIG_PM_SLEEP
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int acpi_pm_device_run_wake(struct device *, bool);
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int acpi_pm_device_sleep_wake(struct device *, bool);
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#else
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static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
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{
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return -ENODEV;
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}
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static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
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{
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return -ENODEV;
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