Subject: [PATCH] [acpi video] Add bus event interface

- Trap same events as legacy interface, but in smaller, cleaner way
- Don't do much with NOTIFY_PROBE event, since the legacy didn't
  seem to do it right..

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

---

 drivers/acpi/drivers/video/bus-event.c |   55 +++++++++++++++++++++++++++++++-
 1 files changed, 54 insertions(+), 1 deletions(-)

applies-to: e5b1b934708a4d94482885cc9f34a857a51bc1be
7ba679939461858258eee71f5d8c66439bb6bb31
diff --git a/drivers/acpi/drivers/video/bus-event.c b/drivers/acpi/drivers/video/bus-event.c
index 84702b6..15bd181 100644
--- a/drivers/acpi/drivers/video/bus-event.c
+++ b/drivers/acpi/drivers/video/bus-event.c
@@ -12,4 +12,57 @@
 
 #include "video.h"
 
-acpi_device_event_none(video_bus);
+#define ACPI_VIDEO_NOTIFY_SWITCH	0x80
+#define ACPI_VIDEO_NOTIFY_PROBE		0x81
+#define ACPI_VIDEO_NOTIFY_CYCLE		0x82
+#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT	0x83
+#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT	0x84
+
+static int video_bus_notify(struct acpi_dev * ad, u32 event, int * data)
+{
+	struct acpi_video_bus * vb = dev_get_drvdata(&ad->dev);
+	int ret = 0;
+
+	if (event == ACPI_VIDEO_NOTIFY_PROBE) {
+		/*
+		 * User plugged in or removed a video connector
+		 *
+		 * FIXME: What do we do here?
+		 *
+		 * An output device has been plugged in, but so what?
+		 * A request to change has not occurred. 
+		 * The old code did a switch, though incorrectly, so 
+		 * an actual switch never really happened.
+		 */
+
+	} else if (event == ACPI_VIDEO_NOTIFY_CYCLE) {
+		/*
+		 * "Cycle Display Output" hotkey pressed
+		 */
+		ret = video_switch_next(vb);
+
+	} else if (event == ACPI_VIDEO_NOTIFY_NEXT_OUTPUT) {
+		/*
+		 * "Next Display Output" hotkey pressed
+		 */
+		ret = video_switch_next(vb);
+
+	} else if (event == ACPI_VIDEO_NOTIFY_PREV_OUTPUT) {
+		/*
+		 * "Previous Display Output" hotkey pressed
+		 */
+		ret = video_switch_prev(vb);
+
+	}
+	*data = 0;
+	return 0;
+}
+
+declare_acpi_events(video_bus, 
+		    acpi_event_raise(ACPI_VIDEO_NOTIFY_SWITCH),
+		    acpi_event_raise(ACPI_VIDEO_NOTIFY_PROBE),
+		    acpi_event_raise(ACPI_VIDEO_NOTIFY_CYCLE),
+		    acpi_event_raise(ACPI_VIDEO_NOTIFY_NEXT_OUTPUT),
+		    acpi_event_raise(ACPI_VIDEO_NOTIFY_PREV_OUTPUT));
+
+acpi_device_event(video_bus);
---
0.99.9.GIT