Input: document meanings of KEY_SCREEN and KEY_ZOOM

It is hard to say what KEY_SCREEN and KEY_ZOOM mean, but historically DVB
folks have used them to indicate switch to full screen mode. Later, they
converged on using KEY_ZOOM to switch into full screen mode and KEY)SCREEN
to control aspect ratio (see Documentation/media/uapi/rc/rc-tables.rst).

Let's commit to these uses, and define:

- KEY_FULL_SCREEN (and make KEY_ZOOM its alias)
- KEY_ASPECT_RATIO (and make KEY_SCREEN its alias)

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index ae366b87426accef1c49b4fdeee478717e0d60ea..bc5054e51bef837167f9e24a6adf561a8196d6f8 100644 (file)
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h
@@ -439,10 +439,12 @@
 #define KEY_TITLE              0x171
 #define KEY_SUBTITLE           0x172
 #define KEY_ANGLE              0x173
-#define KEY_ZOOM               0x174
+#define KEY_FULL_SCREEN                0x174   /* AC View Toggle */
+#define KEY_ZOOM               KEY_FULL_SCREEN
 #define KEY_MODE               0x175
 #define KEY_KEYBOARD           0x176
-#define KEY_SCREEN             0x177
+#define KEY_ASPECT_RATIO       0x177   /* HUTRR37: Aspect */
+#define KEY_SCREEN             KEY_ASPECT_RATIO
 #define KEY_PC                 0x178   /* Media Select Computer */
 #define KEY_TV                 0x179   /* Media Select TV */
 #define KEY_TV2                        0x17a   /* Media Select Cable */