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authorZhang Rui <rui.zhang@intel.com>2006-12-07 20:57:10 +0800
committerLen Brown <len.brown@intel.com>2006-12-15 23:38:35 -0500
commitae8433324be16673c75951986dcf85f29c090557 (patch)
treec762438e6d685f3f106a5c2bc9fc93246bfb47ff /drivers/acpi/scan.c
parentdb3e1cc3257758d8a694d0a6ab29f109fb019853 (diff)
downloadop-kernel-dev-ae8433324be16673c75951986dcf85f29c090557.zip
op-kernel-dev-ae8433324be16673c75951986dcf85f29c090557.tar.gz
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>
Diffstat (limited to 'drivers/acpi/scan.c')
-rw-r--r--drivers/acpi/scan.c59
1 files changed, 57 insertions, 2 deletions
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 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv)
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 void acpi_device_get_busid(struct acpi_device *device,
}
}
+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 @@ static void acpi_device_set_id(struct acpi_device *device,
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;
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