tree 656834daaa233a7c72ac74d6c7e4bafdb1a53b99
parent 74d978ad79fddc383e5f05c984b0a5c6b85a71d3
author Arun Kumar K.R <akumarkr@codeaurora.org> 1354045610 -0800
committer Sudhir Sharma <sudsha@codeaurora.org> 1354755309 -0800

hwc: changes for hdmi hotplug and hpd

This commit has the following changes:
1. Use hdmi switch node for hdmi hotplug
   - uses /devices/virtual/switch/hdmi switch_state to determine
     the hdmi connect/disconnect
   - this switch will be set to 1 on connect and 0 on disconnect
   - on connect, open framebuffer device, will trigger the hdcp
     authentication.
   - the driver will set the hdmi_audio switch to indicate that
     the HDMI sink supports audio
2. Enable HDP on unblank
   - this will resolve the device freeze during the bootup with hdmi
     connected

Change-Id: Id7a656d548a31178e31dcb9aea8acf38a56c9e0c
(cherry picked from commit 953b04b3cbba2f91d25795e5b0560c13d47844b0)