Docs: Add condition for req. to provide shared storage access to host computers
Bug: 19672889
Change-Id: I6836dbbd874db7b203b4616482521238493ed9cc
diff --git a/src/compatibility/5.1/android-5.1-cdd.html b/src/compatibility/5.1/android-5.1-cdd.html
index d6239c3..0b34518 100644
--- a/src/compatibility/5.1/android-5.1-cdd.html
+++ b/src/compatibility/5.1/android-5.1-cdd.html
@@ -3776,11 +3776,12 @@
expose content from both storage paths transparently through Android’s media
scanner service and android.provider.MediaStore.</p>
-<p>Regardless of the form of shared storage used, device implementations MUST
-provide some mechanism to access the contents of shared storage from a host
-computer, such as USB mass storage (UMS) or Media Transfer Protocol (MTP).
-Device implementations MAY use USB mass storage, but SHOULD use Media Transfer
-Protocol. If the device implementation supports Media Transfer Protocol, it:</p>
+<p>Regardless of the form of shared storage used, if the device implementation
+has a USB port with USB peripheral mode support, it MUST provide some mechanism
+to access the contents of shared storage from a host computer. Device
+implementations MAY use USB mass storage, but SHOULD use Media Transfer Protocol
+to satisfy this requirement. If the device implementation supports Media
+Transfer Protocol, it:</p>
<ul>
<li>SHOULD be compatible with the reference Android MTP host, Android File Transfer
@@ -3789,10 +3790,6 @@
<li>SHOULD report a USB interface name of 'MTP'.</li>
</ul>
-<p>If the device implementation lacks USB ports, it MUST provide a host computer
-with access to the contents of shared storage by some other means, such as a
-network file system.</p>
-
<h2 id="7_7_usb">7.7. USB</h2>
@@ -3812,8 +3809,8 @@
screen), so that the display draws correctly when the device is oriented with
the port at bottom. Existing and new Android devices are <strong>very strongly encouraged to meet these requirements</strong> so they will be able to upgrade to future platform releases.</li>
<li>It MUST allow a USB host connected with the Android device to access the
-contents of the shared storage volume using either USB mass storage or Media
-Transfer Protocol, if the device reports the android.hardware.feature.output
+contents of the shared storage volume using standard protocols such as USB mass
+storage or Media Transfer Protocol, if the device reports the android.hardware.feature.output
feature or the android.hardware.camera feature.</li>
<li>It SHOULD implement the Android Open Accessory (AOA) API and specification as
documented in the Android SDK documentation, and if it is an Android Handheld