[Qemu-devel] [PATCH 4/4] adb.c: add power key support

[Programmingkid]

Add support for the power key. It has to be handled differently from the other
keys because it is the only 16-bit value key.

Signed-off-by: John Arbuckle <programmingk...@gmail.com>
---
 hw/input/adb.c | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/hw/input/adb.c b/hw/input/adb.c
index 8413db9..fab241b 100644
--- a/hw/input/adb.c
+++ b/hw/input/adb.c
@@ -358,10 +358,17 @@ static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
         s->rptr = 0;
     }
     s->count--;
-    obuf[0] = keycode;
-    /* NOTE: could put a second keycode if needed */
-    obuf[1] = 0xff;
-    olen = 2;
+    /* The power key is the only two byte value key, so it is a special case. 
*/
+    if (keycode == 0x7f) {
+        obuf[0] = 0x7f;
+        obuf[1] = 0x7f;
+        olen = 2;
+    } else {
+        obuf[0] = keycode;
+        /* NOTE: could put a second keycode if needed */
+        obuf[1] = 0xff;
+        olen = 2;
+    }
 
     return olen;
 }
@@ -440,11 +447,22 @@ static void adb_keyboard_event(DeviceState *dev, 
QemuConsole *src,
     }
     keycode = qcode_to_adb_keycode[qcode];
 
-    if (evt->u.key.data->down == false) { /* if key release event */
-        keycode = keycode | 0x80;   /* create keyboard break code */
+    /* The power button is a special case because it is a 16-bit value */
+    if (qcode == Q_KEY_CODE_POWER) {
+        if (evt->u.key.data->down == true) { /* Power button pushed keycode */
+            adb_kbd_put_keycode(s, 0x7f);
+        } else {                           /* Power button released keycode */
+            adb_kbd_put_keycode(s, 0xff);
+        }
     }
 
-    adb_kbd_put_keycode(s, keycode);
+    /* For all non-power keys - safe for 8-bit keycodes */
+    else {
+        if (evt->u.key.data->down == false) { /* if key release event */
+            keycode = keycode | 0x80;   /* create keyboard break code */
+        }
+        adb_kbd_put_keycode(s, keycode);
+    }
 }
 
 static const VMStateDescription vmstate_adb_kbd = {
-- 
2.7.2