frameworks/base: Remove CM headset/speaker volume restore code
- Jelly Bean already has this built in for the media volume stream, but it's
broken by having our own code in there as well.
Other audio streams will no longer have their volume levels restored, and only
media volume will be subjected to the 'safe headset volume restore' cap.

- Cleaned up the 'link notification with ringtone volume' code.

Change-Id: I06e1d159a66e2d6c09c6128c4c946d9578ea90cd
Audio: Restore volume for all streams on headset connect/disconnect

Audio streams which play sound from both speaker and a connected device would
report to AudioService only the speaker as the playback device, meaning volumes
would not be saved for a separate device state. This patch makes it so the
connected device will be reported instead, fixing volume restore on device
change for those streams (alarm, ring, notifications).

Readded safe headset restore capping for all streams.

Patch Set 3: Changed cap to 10/15

Change-Id: Id2e690f7894475ba0086f62342b8eeb163d24da1
Restore correct volumes when headset is plugged
The correct volume levels for <device>_speaker and
<device>_headset are not restored when a headset device
is plugged in or out

Change-Id: I04c9303e45a28cb24a08d4d73d87253e37299c79
frameworks/base: Add support for wired headset detection
Change-Id: Ia6f26af85aded9decbce93fc2f381f39ff9ab81b
EventHub: Modify the keyboard layout file name for headset button

The keyboard layout file name was formed based on the name of
tabla sound card on current machine. If it doesn't find such
file, it is going to use Generic keyboard layout where the
key mappings are different, even though the scan code is same.
The sound card name differs across different machine types.
So, generalising the keyboard layout file name will work across
all machine types.

CRs-fixed: 344297
Change-Id: I416b6179f51ac98fe7dfae5268ffb58c243540a4
frameworks/base: Fix for headset switch detect

- Headset Switch detect is not functional
- Headset driver on modem in 8x25 and 7x27A targets
  introduces a delay of 500ms before reporting headset
  events to application processor to avoid the problem
  of spurious interrupts being reported due to hardware
  limitation on these targets. Frameworks code in JB
  treats button release event received after 500ms after
  button press as long press event and generates WEBSEARCH
  event. Due to this all the events in 8x25 and 7x27A
  are interpreted as long press events.
- To avoid this problem increase the timeout to more than
  500ms by introducing headset hook delay property for
  these targets.

CRs-fixed: 387247
(cherry picked from commit 5878d849442af33378805f7b9964102119c2fc93)

Change-Id: I03a77666bb217168f7c362bd775dadfbe09fe638
PhoneWindowManager: Release wakelock after headset detection.

- Device does not go to suspend mode after boots up with headset connected.
- Wakelock is not released properly if headsed is detected during boot up.
- Release wakelock in headset intent handler.

CRs-fixed: 384362

(cherry picked from commit 67ddd3c31c7a58aed89f12f956a4d29d58654ed7)

Change-Id: I09f81f4f0e4b2035b13acbb23f6c1dd7b84652c1
frameworks/base: Fix for UI freeze issue with headset insert/removal

- UI freeze is observed while quick insertion and removal of headset
  for multiple times.
- notifyJackSwitchChanged() acquires mHeadsetLock and waits on
  phoneWindowManager lock to call update() as it is a synchronized
  function. sendIntents() is also "synchronized". This function also
  tries to acquire mHeadsetLock. So there is a dead lock, when the
  notifyJackSwitchChanged() acquires the mHeadsetLock before this
  function does.
- update() is called only from notifyJackSwitched() and need not be a
  synchronized function. Removed synchronization on the update() to
  fix the issue.

CRs-Fixed: 390784
(cherry picked from commit 04e683e79c3633e061c71b2ecff4f4c83624d1e0)

Change-Id: I6d274391b68c0a306128d7009bbb651a9b0554f4
Merge changes I6d274391,I09f81f4f,I03a77666,I416b6179,Ia6f26af8,I04c9303e,Id2e690f7,I06e1d159 into jb

* changes:
  frameworks/base: Fix for UI freeze issue with headset insert/removal
  PhoneWindowManager: Release wakelock after headset detection.
  frameworks/base: Fix for headset switch detect
  EventHub: Modify the keyboard layout file name for headset button
  frameworks/base: Add support for wired headset detection Change-Id: Ia6f26af85aded9decbce93fc2f381f39ff9ab81b
  Restore correct volumes when headset is plugged The correct volume levels for <device>_speaker and <device>_headset are not restored when a headset device is plugged in or out
  Audio: Restore volume for all streams on headset connect/disconnect
  frameworks/base: Remove CM headset/speaker volume restore code - Jelly Bean already has this built in for the media volume stream, but it's broken by having our own code in there as well. Other audio streams will no longer have their volume levels restored, and only media volume will be subjected to the 'safe headset volume restore' cap.