ACPI: Set fake hid for non-PNPID ACPI devices
We do this mainly because:
1. hid is used to match ACPI devices and drivers.
.match method which is incompatible to driver model
can be deleted from acpi_driver.ops then.
2. As the .uevent method mark ACPI drivers by PNPID,
fake hid is set to non-PNPID devices so that udev script
can load the right ACPI driver by looking for
"HWID = " or "COMPTID = ".
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index c566c74e..9efe3e9 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -166,8 +166,6 @@
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(drv);
- if (acpi_drv->ops.match)
- return !acpi_drv->ops.match(acpi_dev, acpi_drv);
return !acpi_match_ids(acpi_dev, acpi_drv->ids);
}
@@ -706,6 +704,53 @@
}
}
+static int
+acpi_video_bus_match(struct acpi_device *device)
+{
+ acpi_handle h_dummy1;
+ acpi_handle h_dummy2;
+ acpi_handle h_dummy3;
+
+
+ if (!device)
+ return -EINVAL;
+
+ /* Since there is no HID, CID for ACPI Video drivers, we have
+ * to check well known required nodes for each feature we support.
+ */
+
+ /* Does this device able to support video switching ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
+ return 0;
+
+ /* Does this device able to retrieve a video ROM ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
+ return 0;
+
+ /* Does this device able to configure which video head to be POSTed ? */
+ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
+ ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
+ return 0;
+
+ return -ENODEV;
+}
+
+static int acpi_pci_bridge_match(struct acpi_device *device)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ /* pci bridge has _PRT but isn't PNP0A03 */
+ status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+ if (!acpi_match_ids(device, "PNP0A03"))
+ return -ENODEV;
+ return 0;
+}
+
static void acpi_device_set_id(struct acpi_device *device,
struct acpi_device *parent, acpi_handle handle,
int type)
@@ -736,6 +781,16 @@
device->pnp.bus_address = info->address;
device->flags.bus_address = 1;
}
+
+ if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
+ status = acpi_video_bus_match(device);
+ if(ACPI_SUCCESS(status))
+ hid = ACPI_VIDEO_HID;
+
+ status = acpi_pci_bridge_match(device);
+ if(ACPI_SUCCESS(status))
+ hid = ACPI_PCI_BRIDGE_HID;
+ }
break;
case ACPI_BUS_TYPE_POWER:
hid = ACPI_POWER_HID;