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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-03-17 01:49:03 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-03-17 01:49:03 +0300
commitce793486e23e0162a732c605189c8028e0910e86 (patch)
treebc36cffe7005afecc2f9db436dedd107773108b0 /include/linux/fwnode.h
parent06e5801b8cb3fc057d88cb4dc03c0b64b2744cda (diff)
downloadlinux-ce793486e23e0162a732c605189c8028e0910e86.tar.xz
driver core / ACPI: Represent ACPI companions using fwnode_handle
Now that we have struct fwnode_handle, we can use that to point to ACPI companions from struct device objects instead of pointing to struct acpi_device directly. There are two benefits from that. First, the somewhat ugly and hackish struct acpi_dev_node can be dropped and, second, the same struct fwnode_handle pointer can be used in the future to point to other (non-ACPI) firmware device node types. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'include/linux/fwnode.h')
-rw-r--r--include/linux/fwnode.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
new file mode 100644
index 000000000000..17bb5f039509
--- /dev/null
+++ b/include/linux/fwnode.h
@@ -0,0 +1,25 @@
+/*
+ * fwnode.h - Firmware device node object handle type definition.
+ *
+ * Copyright (C) 2015, Intel Corporation
+ * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_FWNODE_H_
+#define _LINUX_FWNODE_H_
+
+enum fwnode_type {
+ FWNODE_INVALID = 0,
+ FWNODE_OF,
+ FWNODE_ACPI,
+};
+
+struct fwnode_handle {
+ enum fwnode_type type;
+};
+
+#endif