Add acpi.h header

This is needed for the new acpi functionality in patch_realtek.c.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 36 insertions, 0 deletions

diff --git a/include/acpi/acpi.h b/include/acpi/acpi.h
new file mode 100644
index 0000000..d7d6cb9
--- /dev/null
+++ b/include/acpi/acpi.h
@@ -0,0 +1,36 @@
+#ifndef __ACPI_H__
+#define __ACPI_H__
+
+/* Copy-pasted from acpixf.h, acexcep.h and actypes.h. */
+
+/*
+ * Miscellaneous types
+ */
+typedef u32 acpi_status;	/* All ACPI Exceptions */
+typedef u32 acpi_name;		/* 4-byte ACPI name */
+typedef char *acpi_string;	/* Null terminated ASCII string */
+typedef void *acpi_handle;	/* Actually a ptr to a NS Node */
+
+typedef
+acpi_status(*acpi_walk_callback) (acpi_handle object,
+				  u32 nesting_level,
+				  void *context, void **return_value);
+
+/*
+ * Success is always zero, failure is non-zero
+ */
+#define ACPI_SUCCESS(a)                 (!(a))
+#define ACPI_FAILURE(a)                 (a)
+
+#define ACPI_SKIP(a)                    (a == AE_CTRL_SKIP)
+#define AE_OK                           (acpi_status) 0x0000
+
+static inline acpi_status
+acpi_get_devices(const char *HID,
+		 acpi_walk_callback user_function,
+		 void *context, void **return_value)
+{
+	return user_function(NULL, 0, context, NULL);
+}
+
+#endif				/* __ACPI_H__ */