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10-Jul-2012 |
Alex Yakavenka <ayakav@codeaurora.org> |
Telephony: Remove CdmaLteUicc objects
-Pass IccCard object to GsmMmiCode
-Create IccCardProxy
-Make IccCard an interface and pass instance of IccCardProxy to
external applications (PhoneApp). IccCardProxy will use internal
UiccCard to map Icc requests to current active application on
UiccCard to maintain backwards compatibility for external
applications
-Add documentation to UiccController
The primary advantage of UiccController is that we can work with
multiple uicc applications at the same time. And that is a
requirement for modes like Cdma/Lte. The existing code supports
Cdma/Lte only partially and with guessing on modem side. However,
some things modem can guess, while others - it can't.
For instance, when a user tries to edit the fdn list the current
code will pass ef_id for fdn (0x6F3B). But the modem will have no
clue which fdn list the user wants to edit (csim or usim, both
have path 7FFF), and it's impossible for modem to guess correctly
all the time. All the modem can do is try to be consistent and
hope another device is doing same things. Imagine you bring your
card from another Cdma/Lte device to your new Cdma/Lte device:
if this modem uses different fdn file, it won't work as all
existing entries won't be there.
Another example is when the modem's guess is wrong for files like
csim/ef_li (7FFF 6F3A) versus usim/ef_adn (7FFF 6F3A). They have
same ef_ids so Android really should pass aid of the app it wants
to access. Without aids there is no way modem can know for sure
which file Android wants to read! However, in the current code
even Android doesn't know which aid it wants to read file from
since CdmaLteRecords has only 1 aid.
All of these problems cause more and more hacks, both in the modem
and in Android side. UiccController cleans up current code and
provides framework to work with multiple Uicc applications at the
same time.
Change-Id: I60216887b14140bdf833a8ed579ba16cad932bdc
/frameworks/opt/telephony/src/java/com/android/internal/telephony/UiccCardApplication.java
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