#ifdef CONFIG_X86
#include <asm/mpspec.h>
#endif
+#include <linux/pci.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
+#include "internal.h"
+
#define _COMPONENT ACPI_BUS_COMPONENT
ACPI_MODULE_NAME("bus");
#define STRUCT_TO_INT(s) (*((int*)&s))
+static int set_power_nocheck(const struct dmi_system_id *id)
+{
+ printk(KERN_NOTICE PREFIX "%s detected - "
+ "disable power check in power transistion\n", id->ident);
+ acpi_power_nocheck = 1;
+ return 0;
+}
+static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
+ {
+ set_power_nocheck, "HP Pavilion 05", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+ DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL},
+ {},
+};
+
+
/* --------------------------------------------------------------------------
Device Management
-------------------------------------------------------------------------- */
int acpi_bus_get_status(struct acpi_device *device)
{
acpi_status status = AE_OK;
- unsigned long sta = 0;
+ unsigned long long sta = 0;
if (!device)
}
/*
- * Otherwise we assume the status of our parent (unless we don't
- * have one, in which case status is implied).
+ * According to ACPI spec some device can be present and functional
+ * even if the parent is not present but functional.
+ * In such conditions the child device should not inherit the status
+ * from the parent.
*/
- else if (device->parent)
- device->status = device->parent->status;
else
STRUCT_TO_INT(device->status) =
ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
if (device->status.functional && !device->status.present) {
- printk(KERN_WARNING PREFIX "Device [%s] status [%08x]: "
- "functional but not present; setting present\n",
- device->pnp.bus_id, (u32) STRUCT_TO_INT(device->status));
- device->status.present = 1;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
+ "functional but not present;\n",
+ device->pnp.bus_id,
+ (u32) STRUCT_TO_INT(device->status)));
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
int result = 0;
acpi_status status = 0;
struct acpi_device *device = NULL;
- unsigned long psc = 0;
+ unsigned long long psc = 0;
result = acpi_bus_get_device(handle, &device);
/*
* Get device's current power state
*/
- acpi_bus_get_power(device->handle, &device->power.state);
+ if (!acpi_power_nocheck) {
+ /*
+ * Maybe the incorrect power state is returned on the bogus
+ * bios, which is different with the real power state.
+ * For example: the bios returns D0 state and the real power
+ * state is D3. OS expects to set the device to D0 state. In
+ * such case if OS uses the power state returned by the BIOS,
+ * the device can't be transisted to the correct power state.
+ * So if the acpi_power_nocheck is set, it is unnecessary to
+ * get the power state by calling acpi_bus_get_power.
+ */
+ acpi_bus_get_power(device->handle, &device->power.state);
+ }
if ((state == device->power.state) && !device->flags.force_power_state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
EXPORT_SYMBOL(acpi_bus_set_power);
+bool acpi_bus_power_manageable(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->flags.power_manageable;
+}
+
+EXPORT_SYMBOL(acpi_bus_power_manageable);
+
+bool acpi_bus_can_wakeup(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->wakeup.flags.valid;
+}
+
+EXPORT_SYMBOL(acpi_bus_can_wakeup);
+
/* --------------------------------------------------------------------------
Event Management
-------------------------------------------------------------------------- */
return 0;
}
+static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
+int register_acpi_bus_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
+
+void unregister_acpi_bus_notifier(struct notifier_block *nb)
+{
+ blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
+
/**
* acpi_bus_notify
* ---------------
int result = 0;
struct acpi_device *device = NULL;
+ blocking_notifier_call_chain(&acpi_bus_notify_list,
+ type, (void *)handle);
if (acpi_bus_get_device(handle, &device))
return;
return 0;
}
-acpi_native_uint acpi_gbl_permanent_mmap;
+u8 acpi_gbl_permanent_mmap;
void __init acpi_early_init(void)
"Unable to initialize ACPI OS objects\n");
goto error1;
}
-#ifdef CONFIG_ACPI_EC
+
/*
* ACPI 2.0 requires the EC driver to be loaded and work before
* the EC device is found in the namespace (i.e. before acpi_initialize_objects()
*/
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
-#endif
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE(status)) {
goto error1;
}
+ /*
+ * Maybe EC region is required at bus_scan/acpi_get_devices. So it
+ * is necessary to enable it as early as possible.
+ */
+ acpi_boot_ec_enable();
+
printk(KERN_INFO PREFIX "Interpreter enabled\n");
/* Initialize sleep structures */
acpi_kobj = NULL;
}
+ init_acpi_device_notify();
result = acpi_bus_init();
if (!result) {
+ pci_mmcfg_late_init();
if (!(pm_flags & PM_APM))
pm_flags |= PM_ACPI;
else {
} else
disable_acpi();
+ if (acpi_disabled)
+ return result;
+
+ /*
+ * If the laptop falls into the DMI check table, the power state check
+ * will be disabled in the course of device power transistion.
+ */
+ dmi_check_system(power_nocheck_dmi_table);
+
+ acpi_scan_init();
+ acpi_ec_init();
+ acpi_power_init();
+ acpi_system_init();
+ acpi_debug_init();
return result;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff