ACPI / scan: use platform bus type by default for _HID enumeration
Because of the growing demand for enumerating ACPI devices to
platform bus, change the code to enumerate ACPI device objects to
platform bus by default. Namely, create platform devices for the
ACPI device objects that
1. Have pnp.type.platform_id set (device objects with _HID currently).
2. Do not have a scan handler attached.
3. Are not SPI/I2C slave devices (that should be enumerated to the
appropriate buses bus by their parent).
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
[rjw: Subject and changelog, rebase and code cleanup]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 3bb89de..2bf9082 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -22,25 +22,11 @@
ACPI_MODULE_NAME("platform");
-/*
- * The following ACPI IDs are known to be suitable for representing as
- * platform devices.
- */
-static const struct acpi_device_id acpi_platform_device_ids[] = {
-
- { "PNP0D40" },
- { "VPC2004" },
- { "BCM4752" },
- { "LNV4752" },
- { "BCM2E1A" },
- { "BCM2E39" },
- { "BCM2E3D" },
-
- /* Intel Smart Sound Technology */
- { "INT33C8" },
- { "80860F28" },
-
- { }
+static const struct acpi_device_id forbidden_id_list[] = {
+ {"PNP0000", 0}, /* PIC */
+ {"PNP0100", 0}, /* Timer */
+ {"PNP0200", 0}, /* AT DMA Controller */
+ {"", 0},
};
/**
@@ -67,6 +53,9 @@
if (adev->physical_node_count)
return NULL;
+ if (!acpi_match_device_ids(adev, forbidden_id_list))
+ return ERR_PTR(-EINVAL);
+
INIT_LIST_HEAD(&resource_list);
count = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
if (count < 0) {
@@ -124,20 +113,3 @@
kfree(resources);
return pdev;
}
-
-static int acpi_platform_attach(struct acpi_device *adev,
- const struct acpi_device_id *id)
-{
- acpi_create_platform_device(adev);
- return 1;
-}
-
-static struct acpi_scan_handler platform_handler = {
- .ids = acpi_platform_device_ids,
- .attach = acpi_platform_attach,
-};
-
-void __init acpi_platform_init(void)
-{
- acpi_scan_add_handler(&platform_handler);
-}