Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 209 insertions, 0 deletions

diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c
new file mode 100644
index 000000000000..d9b199969d5d
--- /dev/null
+++ b/drivers/acpi/sleep/wakeup.c
@@ -0,0 +1,209 @@
+/*
+ * wakeup.c - support wakeup devices
+ * Copyright (C) 2004 Li Shaohua <shaohua.li@intel.com>
+ */
+
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <acpi/acevents.h>
+#include "sleep.h"
+
+#define _COMPONENT              ACPI_SYSTEM_COMPONENT
+ACPI_MODULE_NAME                ("wakeup_devices")
+
+extern struct list_head acpi_wakeup_device_list;
+extern spinlock_t acpi_device_lock;
+
+#ifdef CONFIG_ACPI_SLEEP
+/**
+ * acpi_enable_wakeup_device_prep - prepare wakeup devices
+ *      @sleep_state:   ACPI state
+ * Enable all wakup devices power if the devices' wakeup level
+ * is higher than requested sleep level
+ */
+
+void
+acpi_enable_wakeup_device_prep(
+        u8              sleep_state)
+{
+        struct list_head * node, * next;
+
+        ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_prep");
+
+        spin_lock(&acpi_device_lock);
+        list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+                struct acpi_device * dev = container_of(node, 
+                        struct acpi_device, wakeup_list);
+                
+                if (!dev->wakeup.flags.valid || 
+                        !dev->wakeup.state.enabled ||
+                        (sleep_state > (u32) dev->wakeup.sleep_state))
+                        continue;
+
+                spin_unlock(&acpi_device_lock);
+                acpi_enable_wakeup_device_power(dev);
+                spin_lock(&acpi_device_lock);
+        }
+        spin_unlock(&acpi_device_lock);
+}
+
+/**
+ * acpi_enable_wakeup_device - enable wakeup devices
+ *      @sleep_state:   ACPI state
+ * Enable all wakup devices's GPE
+ */
+void
+acpi_enable_wakeup_device(
+        u8              sleep_state)
+{
+        struct list_head * node, * next;
+
+        /* 
+         * Caution: this routine must be invoked when interrupt is disabled 
+         * Refer ACPI2.0: P212
+         */
+        ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device");
+        spin_lock(&acpi_device_lock);
+        list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+                struct acpi_device * dev = container_of(node, 
+                        struct acpi_device, wakeup_list);
+
+                /* If users want to disable run-wake GPE,
+                 * we only disable it for wake and leave it for runtime
+                 */
+                if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
+                        spin_unlock(&acpi_device_lock);
+                        acpi_set_gpe_type(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_GPE_TYPE_RUNTIME);
+                        /* Re-enable it, since set_gpe_type will disable it */
+                        acpi_enable_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_ISR);
+                        spin_lock(&acpi_device_lock);
+                        continue;
+                }
+
+                if (!dev->wakeup.flags.valid ||
+                        !dev->wakeup.state.enabled ||
+                        (sleep_state > (u32) dev->wakeup.sleep_state))
+                        continue;
+
+                spin_unlock(&acpi_device_lock);
+                /* run-wake GPE has been enabled */
+                if (!dev->wakeup.flags.run_wake)
+                        acpi_enable_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_ISR);
+                dev->wakeup.state.active = 1;
+                spin_lock(&acpi_device_lock);
+        }
+        spin_unlock(&acpi_device_lock);
+}
+
+/**
+ * acpi_disable_wakeup_device - disable devices' wakeup capability
+ *      @sleep_state:   ACPI state
+ * Disable all wakup devices's GPE and wakeup capability
+ */
+void
+acpi_disable_wakeup_device (
+        u8              sleep_state)
+{
+        struct list_head * node, * next;
+
+        ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device");
+
+        spin_lock(&acpi_device_lock);
+        list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+                struct acpi_device * dev = container_of(node, 
+                        struct acpi_device, wakeup_list);
+
+                if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
+                        spin_unlock(&acpi_device_lock);
+                        acpi_set_gpe_type(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN);
+                        /* Re-enable it, since set_gpe_type will disable it */
+                        acpi_enable_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                        spin_lock(&acpi_device_lock);
+                        continue;
+                }
+
+                if (!dev->wakeup.flags.valid || 
+                        !dev->wakeup.state.active ||
+                        (sleep_state > (u32) dev->wakeup.sleep_state))
+                        continue;
+
+                spin_unlock(&acpi_device_lock);
+                acpi_disable_wakeup_device_power(dev);
+                /* Never disable run-wake GPE */
+                if (!dev->wakeup.flags.run_wake) {
+                        acpi_disable_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                        acpi_clear_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                }
+                dev->wakeup.state.active = 0;
+                spin_lock(&acpi_device_lock);
+        }
+        spin_unlock(&acpi_device_lock);
+}
+
+static int __init acpi_wakeup_device_init(void)
+{
+        struct list_head * node, * next;
+
+        if (acpi_disabled)
+                return 0;
+        printk("ACPI wakeup devices: \n");
+
+        spin_lock(&acpi_device_lock);
+        list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+                struct acpi_device * dev = container_of(node, 
+                        struct acpi_device, wakeup_list);
+                
+                /* In case user doesn't load button driver */
+                if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
+                        spin_unlock(&acpi_device_lock);
+                        acpi_set_gpe_type(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN);
+                        acpi_enable_gpe(dev->wakeup.gpe_device, 
+                                dev->wakeup.gpe_number, ACPI_NOT_ISR);
+                        dev->wakeup.state.enabled = 1;
+                        spin_lock(&acpi_device_lock);
+                }
+                printk("%4s ", dev->pnp.bus_id);
+        }
+        spin_unlock(&acpi_device_lock);
+        printk("\n");
+
+        return 0;
+}
+
+late_initcall(acpi_wakeup_device_init);
+#endif
+
+/*
+ * Disable all wakeup GPEs before power off.
+ * 
+ * Since acpi_enter_sleep_state() will disable all
+ * RUNTIME GPEs, we simply mark all GPES that
+ * are not enabled for wakeup from S5 as RUNTIME.
+ */
+void acpi_wakeup_gpe_poweroff_prepare(void)
+{
+        struct list_head * node, * next;
+
+        list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+                struct acpi_device * dev = container_of(node,
+                        struct acpi_device, wakeup_list);
+
+                /* The GPE can wakeup system from S5, don't touch it */
+                if ((u32)dev->wakeup.sleep_state == ACPI_STATE_S5)
+                        continue;
+                /* acpi_set_gpe_type will automatically disable GPE */
+                acpi_set_gpe_type(dev->wakeup.gpe_device,
+                        dev->wakeup.gpe_number, ACPI_GPE_TYPE_RUNTIME);
+        }
+}