vserver 1.9.3

[linux-2.6.git] / drivers / acpi / sleep / main.c

diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index ac7a480..847a90e 100644 (file)
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -10,6 +10,7 @@
 
 #include <linux/delay.h>
 #include <linux/irq.h>
+#include <linux/dmi.h>
 #include <linux/device.h>
 #include <linux/suspend.h>
 #include <acpi/acpi_bus.h>
@@ -30,18 +31,20 @@ static u32 acpi_suspend_states[] = {
        [PM_SUSPEND_DISK]       = ACPI_STATE_S4,
 };
 
+static int init_8259A_after_S1;
+
 /**
  *     acpi_pm_prepare - Do preliminary suspend work.
- *     @state:         suspend state we're entering.
+ *     @pm_state:              suspend state we're entering.
  *
  *     Make sure we support the state. If we do, and we need it, set the
  *     firmware waking vector and do arch-specific nastiness to get the 
  *     wakeup code to the waking vector. 
  */
 
-static int acpi_pm_prepare(u32 state)
+static int acpi_pm_prepare(u32 pm_state)
 {
-       u32 acpi_state = acpi_suspend_states[state];
+       u32 acpi_state = acpi_suspend_states[pm_state];
 
        if (!sleep_states[acpi_state])
                return -EPERM;
@@ -49,13 +52,14 @@ static int acpi_pm_prepare(u32 state)
        /* do we have a wakeup address for S2 and S3? */
        /* Here, we support only S4BIOS, those we set the wakeup address */
        /* S4OS is only supported for now via swsusp.. */
-       if (state == PM_SUSPEND_MEM || state == PM_SUSPEND_DISK) {
+       if (pm_state == PM_SUSPEND_MEM || pm_state == PM_SUSPEND_DISK) {
                if (!acpi_wakeup_address)
                        return -EFAULT;
                acpi_set_firmware_waking_vector(
                        (acpi_physical_address) acpi_wakeup_address);
        }
        ACPI_FLUSH_CPU_CACHE();
+       acpi_enable_wakeup_device_prep(acpi_state);
        acpi_enter_sleep_state_prep(acpi_state);
        return 0;
 }
@@ -63,23 +67,23 @@ static int acpi_pm_prepare(u32 state)
 
 /**
  *     acpi_pm_enter - Actually enter a sleep state.
- *     @state:         State we're entering.
+ *     @pm_state:              State we're entering.
  *
  *     Flush caches and go to sleep. For STR or STD, we have to call 
  *     arch-specific assembly, which in turn call acpi_enter_sleep_state().
  *     It's unfortunate, but it works. Please fix if you're feeling frisky.
  */
 
-static int acpi_pm_enter(u32 state)
+static int acpi_pm_enter(u32 pm_state)
 {
        acpi_status status = AE_OK;
        unsigned long flags = 0;
-       u32 acpi_state = acpi_suspend_states[state];
+       u32 acpi_state = acpi_suspend_states[pm_state];
 
        ACPI_FLUSH_CPU_CACHE();
 
        /* Do arch specific saving of state. */
-       if (state > PM_SUSPEND_STANDBY) {
+       if (pm_state > PM_SUSPEND_STANDBY) {
                int error = acpi_save_state_mem();
                if (error)
                        return error;
@@ -87,7 +91,8 @@ static int acpi_pm_enter(u32 state)
 
 
        local_irq_save(flags);
-       switch (state)
+       acpi_enable_wakeup_device(acpi_state);
+       switch (pm_state)
        {
        case PM_SUSPEND_STANDBY:
                barrier();
@@ -115,7 +120,7 @@ static int acpi_pm_enter(u32 state)
         * And, in the case of the latter, the memory image should have already
         * been loaded from disk.
         */
-       if (state > PM_SUSPEND_STANDBY)
+       if (pm_state > PM_SUSPEND_STANDBY)
                acpi_restore_state_mem();
 
 
@@ -125,20 +130,23 @@ static int acpi_pm_enter(u32 state)
 
 /**
  *     acpi_pm_finish - Finish up suspend sequence.
- *     @state:         State we're coming out of.
+ *     @pm_state:              State we're coming out of.
  *
  *     This is called after we wake back up (or if entering the sleep state
  *     failed). 
  */
 
-static int acpi_pm_finish(u32 state)
+static int acpi_pm_finish(u32 pm_state)
 {
-       acpi_leave_sleep_state(state);
+       u32 acpi_state = acpi_suspend_states[pm_state];
+
+       acpi_leave_sleep_state(acpi_state);
+       acpi_disable_wakeup_device(acpi_state);
 
        /* reset firmware waking vector */
        acpi_set_firmware_waking_vector((acpi_physical_address) 0);
 
-       if (dmi_broken & BROKEN_INIT_AFTER_S1) {
+       if (init_8259A_after_S1) {
                printk("Broken toshiba laptop -> kicking interrupts\n");
                init_8259A(0);
        }
@@ -159,22 +167,44 @@ int acpi_suspend(u32 acpi_state)
        return -EINVAL;
 }
 
-
 static struct pm_ops acpi_pm_ops = {
        .prepare        = acpi_pm_prepare,
        .enter          = acpi_pm_enter,
        .finish         = acpi_pm_finish,
 };
 
+
+/*
+ * Toshiba fails to preserve interrupts over S1, reinitialization
+ * of 8259 is needed after S1 resume.
+ */
+static int __init init_ints_after_s1(struct dmi_system_id *d)
+{
+       printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident);
+       init_8259A_after_S1 = 1;
+       return 0;
+}
+
+static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
+       {
+               .callback = init_ints_after_s1,
+               .ident = "Toshiba Satellite 4030cdt",
+               .matches = { DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"), },
+       },
+       { },
+};
+
 static int __init acpi_sleep_init(void)
 {
        int                     i = 0;
 
+       dmi_check_system(acpisleep_dmi_table);
+
        if (acpi_disabled)
                return 0;
 
        printk(KERN_INFO PREFIX "(supports");
-       for (i=0; i<ACPI_S_STATE_COUNT; i++) {
+       for (i=0; i < ACPI_S_STATE_COUNT; i++) {
                acpi_status status;
                u8 type_a, type_b;
                status = acpi_get_sleep_type_data(i, &type_a, &type_b);
@@ -187,7 +217,8 @@ static int __init acpi_sleep_init(void)
                                sleep_states[i] = 1;
                                printk(" S4bios");
                                acpi_pm_ops.pm_disk_mode = PM_DISK_FIRMWARE;
-                       } else if (sleep_states[i])
+                       }
+                       if (sleep_states[i])
                                acpi_pm_ops.pm_disk_mode = PM_DISK_PLATFORM;
                }
        }