Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
new file mode 100644
index 0000000..f8f5055
--- /dev/null
+++ b/drivers/base/power/resume.c
@@ -0,0 +1,112 @@
+/*
+ * resume.c - Functions for waking devices up.
+ *
+ * Copyright (c) 2003 Patrick Mochel
+ * Copyright (c) 2003 Open Source Development Labs
+ *
+ * This file is released under the GPLv2
+ *
+ */
+
+#include <linux/device.h>
+#include "power.h"
+
+extern int sysdev_resume(void);
+
+
+/**
+ * resume_device - Restore state for one device.
+ * @dev: Device.
+ *
+ */
+
+int resume_device(struct device * dev)
+{
+ if (dev->bus && dev->bus->resume)
+ return dev->bus->resume(dev);
+ return 0;
+}
+
+
+
+void dpm_resume(void)
+{
+ down(&dpm_list_sem);
+ while(!list_empty(&dpm_off)) {
+ struct list_head * entry = dpm_off.next;
+ struct device * dev = to_device(entry);
+
+ get_device(dev);
+ list_del_init(entry);
+ list_add_tail(entry, &dpm_active);
+
+ up(&dpm_list_sem);
+ if (!dev->power.prev_state)
+ resume_device(dev);
+ down(&dpm_list_sem);
+ put_device(dev);
+ }
+ up(&dpm_list_sem);
+}
+
+
+/**
+ * device_resume - Restore state of each device in system.
+ *
+ * Walk the dpm_off list, remove each entry, resume the device,
+ * then add it to the dpm_active list.
+ */
+
+void device_resume(void)
+{
+ down(&dpm_sem);
+ dpm_resume();
+ up(&dpm_sem);
+}
+
+EXPORT_SYMBOL_GPL(device_resume);
+
+
+/**
+ * device_power_up_irq - Power on some devices.
+ *
+ * Walk the dpm_off_irq list and power each device up. This
+ * is used for devices that required they be powered down with
+ * interrupts disabled. As devices are powered on, they are moved to
+ * the dpm_suspended list.
+ *
+ * Interrupts must be disabled when calling this.
+ */
+
+void dpm_power_up(void)
+{
+ while(!list_empty(&dpm_off_irq)) {
+ struct list_head * entry = dpm_off_irq.next;
+ struct device * dev = to_device(entry);
+
+ get_device(dev);
+ list_del_init(entry);
+ list_add_tail(entry, &dpm_active);
+ resume_device(dev);
+ put_device(dev);
+ }
+}
+
+
+/**
+ * device_pm_power_up - Turn on all devices that need special attention.
+ *
+ * Power on system devices then devices that required we shut them down
+ * with interrupts disabled.
+ * Called with interrupts disabled.
+ */
+
+void device_power_up(void)
+{
+ sysdev_resume();
+ dpm_power_up();
+}
+
+EXPORT_SYMBOL_GPL(device_power_up);
+
+