platform/x86: wmi: Add an interface for subdrivers to access sibling devices (f6301986) · Commits · 戴 / test

drivers/platform/x86/wmi.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -344,6 +344,23 @@ union acpi_object wmidev_block_query(struct wmi_device wdev, u8 instance)
		}
		EXPORT_SYMBOL_GPL(wmidev_block_query);

		struct wmi_device wmidev_get_other_guid(struct wmi_device wdev,
		const char *guid_string)
		{
		struct wmi_block *this_wb = container_of(wdev, struct wmi_block, dev);
		struct wmi_block *other_wb;

		if (!find_guid(guid_string, &other_wb))
		return NULL;

		if (other_wb->acpi_device != this_wb->acpi_device)
		return NULL;

		get_device(&other_wb->dev.dev);
		return &other_wb->dev;
		}
		EXPORT_SYMBOL_GPL(wmidev_get_other_guid);

		/**
		* wmi_set_block - Write to a WMI block
		* @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba

+4 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,10 @@ struct wmi_device {
		extern union acpi_object wmidev_block_query(struct wmi_device wdev,
		u8 instance);

		/* Gets another device on the same bus. Caller must put_device the result. */
		extern struct wmi_device wmidev_get_other_guid(struct wmi_device wdev,
		const char *guid_string);

		struct wmi_device_id {
		const char *guid_string;
		};