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>

5 files changed, 63 insertions, 61 deletions

diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index d83327468358..aa05e92464e6 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -379,32 +379,16 @@ acpi_pci_bind_root(struct acpi_device *device,
 
 static int acpi_pci_bridge_add(struct acpi_device *device);
 static int acpi_pci_bridge_remove(struct acpi_device *device, int type);
-static int acpi_pci_bridge_match(struct acpi_device *device,
-       struct acpi_driver *driver);
+
 static struct acpi_driver acpi_pci_bridge_driver = {
        .name = ACPI_PCI_BRIDGE_DRIVER_NAME,
+        .ids = ACPI_PCI_BRIDGE_HID,
        .ops = {
                .add = acpi_pci_bridge_add,
                .remove = acpi_pci_bridge_remove,
-               .match = acpi_pci_bridge_match,
        },
 };
 
-static int acpi_pci_bridge_match(struct acpi_device *device,
-       struct acpi_driver *driver)
-{
-       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 int acpi_pci_bridge_add(struct acpi_device *device)
 {
        return acpi_pci_bind(device);
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index c566c74e8a31..9efe3e9dbf21 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;
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 56666a982476..6e99eea689c8 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -65,16 +65,14 @@ MODULE_LICENSE("GPL");
 
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
-static int acpi_video_bus_match(struct acpi_device *device,
-                                struct acpi_driver *driver);
 
 static struct acpi_driver acpi_video_bus = {
         .name = ACPI_VIDEO_DRIVER_NAME,
         .class = ACPI_VIDEO_CLASS,
+        .ids = ACPI_VIDEO_HID,
         .ops = {
                 .add = acpi_video_bus_add,
                 .remove = acpi_video_bus_remove,
-                .match = acpi_video_bus_match,
                 },
 };
 
@@ -1774,39 +1772,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
         return 0;
 }
 
-static int
-acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
-{
-        acpi_handle h_dummy1;
-        acpi_handle h_dummy2;
-        acpi_handle h_dummy3;
-
-
-        if (!device || !driver)
-                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 __init acpi_video_init(void)
 {
         int result = 0;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 58dc8f651861..a6b4037beeae 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -97,8 +97,6 @@ typedef int (*acpi_op_resume) (struct acpi_device * device);
 typedef int (*acpi_op_scan) (struct acpi_device * device);
 typedef int (*acpi_op_bind) (struct acpi_device * device);
 typedef int (*acpi_op_unbind) (struct acpi_device * device);
-typedef int (*acpi_op_match) (struct acpi_device * device,
-                              struct acpi_driver * driver);
 typedef int (*acpi_op_shutdown) (struct acpi_device * device);
 
 struct acpi_bus_ops {
@@ -112,9 +110,8 @@ struct acpi_bus_ops {
         u32 acpi_op_scan:1;
         u32 acpi_op_bind:1;
         u32 acpi_op_unbind:1;
-        u32 acpi_op_match:1;
         u32 acpi_op_shutdown:1;
-        u32 reserved:20;
+        u32 reserved:21;
 };
 
 struct acpi_device_ops {
@@ -128,7 +125,6 @@ struct acpi_device_ops {
         acpi_op_scan scan;
         acpi_op_bind bind;
         acpi_op_unbind unbind;
-        acpi_op_match match;
         acpi_op_shutdown shutdown;
 };
 
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 6a5bdcefec64..be67750ec88b 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -43,6 +43,8 @@
 #define ACPI_BUTTON_HID_POWERF          "ACPI_FPB"
 #define ACPI_BUTTON_HID_SLEEPF          "ACPI_FSB"
 
+#define ACPI_VIDEO_HID                  "ACPI_VID"
+#define ACPI_PCI_BRIDGE_HID             "ACPI_PCI"
 /* --------------------------------------------------------------------------
                                        PCI
    -------------------------------------------------------------------------- */