rockbox/firmware/export/ascodec.h, branch master

AMS: Return ascodec to interrupt-based I2C2 driver

2017-01-24T23:05:13+00:00

1. Slightly revised and regularized internal interface. Callback is used
for read and write to provide completion signal instead of having two
mechanisms.

2. Lower overhead for asynchronous or alterate completion callbacks. We
now only init what is required by the transfer. A couple unneeded
structure members were also nixed.

3. Fixes a bug that would neglect a semaphore wait if pumping the I2C
interrupts in a loop when not in thread state or interrupts are masked.

4. Corrects broken initialization order by defining KDEV_INIT, which
makes kernel_init() call kernel_device_init() to initialize additional
devices _after_ the kernel, threading and synchronization objects are
safe to use.

5. Locking set_cpu_frequency has to be done at the highest level in
system.c to ensure the boost counter and the frequency are both set in
agreement. Reconcile the locking inteface between PP and AMS (the only
two currently using locking there) to keep it clean.

Now works fine with voltages in GIT HEAD on my Fuze v2, type 0.
Previously, everything crashed and died instantly. action.c calling
set_cpu_frequency from a tick was part of it. The rest may have been
related to 3. and 4. Honestly, I'm not certain!

Testing by Mihail Zenkov indicates it solves our problems. This will
get the developer builds running again after the kernel assert code
push.

Change-Id: Ie245994fb3e318dd5ef48e383ce61fdd977224d4

as3525: reverting I2C2 to non-interrupts version

2016-04-05T01:55:38+00:00

Interrupts version is cause of freeze on USB extraction.
Also non-interrupts version much simpler and faster.

Change-Id: I30a2993cdcaa85abfba77ca06bfacd5b6b4353e2

Fix checking for CONFIG_CHARGING

2016-04-04T09:19:51+00:00

Change-Id: I53b9a129679fd7b322770025106ef92033226d2a

remove now unused prototype

2012-01-08T01:44:08+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31627 a1c6a512-1295-4272-9138-f99709370657

ascodec-target.h: remove

2012-01-08T01:43:16+00:00

move prototypes to ascodec.h
move code to ascodec*.c

YPR0: use adc-as3514.c instead of duplicating it

TODO: merge as3514.h and ascodec.h ?

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31626 a1c6a512-1295-4272-9138-f99709370657

Initial commit of the Samsung YP-R0 port.

2011-12-24T11:56:46+00:00

This port is a hybrid native/RaaA port. It runs on a embedded linux system,
but is the only application. It therefore can implement lots of stuff that
native targets also implement, while leveraging the underlying linux kernel.

The port is quite advanced. User interface, audio playback, plugins work
mostly fine. Missing is e.g. power mangement and USB (see SamsungYPR0 wiki page).

Included in utils/ypr0tools are scripts and programs required to generate
a patched firmware. The patched firmware has the rootfs modified to load
Rockbox. It includes a early/safe USB mode.

This port needs a new toolchain, one that includes glibc headers and libraries.
rockboxdev.sh can generate it, but e.g. codesourcey and distro packages may
also work.

Most of the initial effort is done by Lorenzo Miori and others (on ABI),
including reverse engineering and patching of the original firmware,
initial drivers, and more. Big thanks to you.

Flyspray: FS#12348
Author: Lorenzo Miori, myself

Merry christmas to ypr0 owners! :)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31415 a1c6a512-1295-4272-9138-f99709370657

Oops, fix red - only include ascodec-target.h when HAVE_AS3514 is defined

2008-10-31T00:37:58+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18941 a1c6a512-1295-4272-9138-f99709370657

Abstract the PortalPlayer AS3514 handling with an "ascodec" API - inspired by the wmcodec API used with the Wolfson codecs. The intention is to implement this API for the AS3525 and then share code with the Sansa V2 ports.

2008-10-31T00:16:42+00:00

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18940 a1c6a512-1295-4272-9138-f99709370657