linux-kernel - [PATCH 1/7] Input: document meanings of KEY_SCREEN and KEY

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Date:   Fri, 18 Jan 2019 15:30:31 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: [PATCH 1/7] 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@...il.com>
---

Please let me know how we want merge this. Some of patches can be applied
independently and I tried marking them as such, but some require new key
names from input.h

 include/uapi/linux/input-event-codes.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index ae366b87426a..bc5054e51bef 100644
--- 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 */
-- 
2.20.1.321.g9e740568ce-goog