Subject: [PATCH] [acpi driver model] Add event interface header

- Create include/acpi/event.h
- Define struct acpi_device_event for describing the event
  that a driver wants to register a handler for. Containing:
	- e_type - defaults to ACPI_DEVICE_NOTIFY, which is
	  the event that most drivers want.
	- e_handler - the callback routine for the event

- Define macros for defining the event, and a couple of
  macros for the header files to use when referencing the
  event structures.

Signed-off-by: Patrick Mochel <mochel@linux.intel.com>

---

 include/acpi/event.h |   53 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)
 create mode 100644 include/acpi/event.h

applies-to: 1795edbb973e1d59d438d9f3516f22ebaeb26dde
58fefe7b0c8eda03d015244a177d0818ab8f1388
diff --git a/include/acpi/event.h b/include/acpi/event.h
new file mode 100644
index 0000000..b48a408
--- /dev/null
+++ b/include/acpi/event.h
@@ -0,0 +1,53 @@
+
+#include <acpi/acpi_drivers.h>
+
+struct acpi_device_event {
+	u32			e_type;
+	acpi_notify_handler	e_handler;
+};
+
+
+/**
+ *	This macro should be used by drivers to declare a
+ *	single	DEVICE_NOTIFY event. 
+ *
+ *	The driver should define the function 'foo_notify',
+ *	where "foo" is the name of their driver.
+ *	The foo_notify function should be the same type as
+ *	'acpi_notify_handler', which is defined in 
+ *	include/acpi/acpixf.h. 
+ *
+ *	For a simple example, see the AC driver.
+ */
+
+#define acpi_device_event(__name)\
+struct acpi_device_event __name##_event = {	\
+	.e_type		= ACPI_DEVICE_NOTIFY,	\
+	.e_handler	= __name##_notify,	\
+}
+
+
+/**
+ *	This macro should be used by drivers that do not 
+ *	have any event handlers to register.
+ *	(It's still defined, but as an empty structure.)
+ */
+
+#define acpi_device_event_none(__name) \
+struct acpi_device_event __name##_event = { }
+
+
+
+/**
+ *	The following macros are used by the ACPI driver
+ *	model header files to ease in initializing the 
+ *	driver structures.
+ *	They are not for use by individual drivers.
+ */
+
+#define acpi_device_event_extern(__name) \
+extern struct acpi_device_event __name##_event
+ 
+
+#define acpi_device_event_ref(__name) &__name##_event
+
---
0.99.9.GIT