rockbox/firmware/export, branch 2048sp5

iBasso DX50/DX90: Major code cleanup and reorganization.

2015-02-02T20:57:55+00:00

Reorganization

- Separated iBasso devices from PLATFORM_ANDROID. These are now standlone
  hosted targets. Most device specific code is in the
  firmware/target/hosted/ibasso directory.
- No dependency on Android SDK, only the Android NDK is needed.
  32 bit Android NDK and Android API Level 16.
- Separate implementation for each device where feasible.

Code cleanup

- Rewrite of existing code, from simple reformat to complete reimplementation.
- New backlight interface, seperating backlight from touchscreen.
- Rewrite of device button handler, removing unneeded code and fixing memory
  leaks.
- New Debug messages interface logging to Android adb logcat (DEBUGF, panicf,
  logf).
- Rewrite of lcd device handler, removing unneeded code and fixing memory leaks.
- Rewrite of audiohw device handler/pcm interface, removing unneeded code and
  fixing memory leaks, enabling 44.1/48kHz pthreaded playback.
- Rewrite of power and powermng, proper shutdown, using batterylog results
  (see http://gerrit.rockbox.org/r/#/c/1047/).
- Rewrite of configure (Android NDK) and device specific config.
- Rewrite of the Android NDK specific Makefile.

Misc

- All plugins/games/demos activated.
- Update tinyalsa to latest from https://github.com/tinyalsa/tinyalsa.

Includes

- http://gerrit.rockbox.org/r/#/c/993/
- http://gerrit.rockbox.org/r/#/c/1010/
- http://gerrit.rockbox.org/r/#/c/1035/

Does not include http://gerrit.rockbox.org/r/#/c/1007/ due to new backlight
interface and new option for hold switch, touchscreen, physical button
interaction.

Rockbox needs the iBasso DX50/DX90 loader for startup, see
http://gerrit.rockbox.org/r/#/c/1099/

The loader expects Rockbox to be installed in /mnt/sdcard/.rockbox/. If
/mnt/sdcard/ is accessed as USB mass storage device, Rockbox will exit
gracefully and the loader will restart Rockbox on USB disconnect.

Tested on iBasso DX50.
Compiled (not tested) for iBasso DX90.
Compiled (not tested) for PLATFORM_ANDROID.

Change-Id: I5f5e22e68f5b4cf29c28e2b40b2c265f2beb7ab7

yp-r0: improve the charging code

2015-01-29T19:28:07+00:00

Some people reported strange charging times and
strange battery life.
Charging by OF: 25 hours; RB: 18 hours
It has been found that there are at least two issues here:

1) the way of getting battery charging status wasn't
really accurate. This attempts to fix that issue.
This patch also simplifies some code (opening a
device is no more needed, for example).

To technically explain, battery charging implies first a constant
current mode (where the voltage increases) and then a constant
voltage mode (where, obviously, the voltage reads more or less
the same). The old way the End Of Charge was detected was based solely
on the voltage, while now it is based on chip's EOC interrupt,
which should be more accurate.

2) OF explicitly sets a constant current 350 mA, while we usually had
55 mA (by as3543 default).
This wasn't discovered before since there is a caching problem
("an accurate guess") in the Samsung power mgmt Linux module,
thus its debugging dumper wasn't really working, reporting a 55 mA current.
Strangely this option should have been set by the bootloader
but apparently it does not.

Some testing is still needed, but I confirm that with this patch
I could run a benchmark for 25 hours (vs. 18 hours), by charging
within Rockbox of course.

Change-Id: I3bd921e86b9018d1cc3c720d15cc46896e8490b3

Get rid of stupid _backlight_* function names

2015-01-12T10:09:27+00:00

_remote_backlight_* and _buttonlight_* are cleaned as well

Change-Id: I73653752831bbe170c26ba95d3bc04c2e3a5cf30

usb: finally get rid of USE_ROCKBOX_USB in Sansa bootloader, use bootloader usb

2015-01-08T21:30:22+00:00

For some reason, the bootloader and config files didn't define
HAVE_BOOTLOADER_USB_MODE, also remove the special cases in usb.c which they
implied.

Change-Id: I68c29be7d03627e64cac4ff7678e0c211e087a8c

usb: make usb_release_exclusive_storage private

2015-01-08T15:45:41+00:00

Change-Id: I0383760b7d8e67cc99bbe4e4979bca92ef436c8d
Reviewed-on: http://gerrit.rockbox.org/1098
Reviewed-by: Amaury Pouly

Clarify usb_powered() and fix some code.

2015-01-08T15:45:32+00:00

Either by mistake or because its meaning changed, usb_powered() doesn't mean
what the name suggest, so clarify its meaning by renaming it to usb_powered_only.
So use of usb_powered() are replaced by usb_inserted() when it makes more sense.

Change-Id: I112887e2d8560e84587bee5f55c826dde8c806d8
Reviewed-on: http://gerrit.rockbox.org/1097
Reviewed-by: Amaury Pouly

usb: document usb states, powering and detection

2015-01-08T15:45:22+00:00

Change-Id: Ia3b7d6c6294bfb9272355c3f28a994dd0e83cbce
Reviewed-on: http://gerrit.rockbox.org/1096
Reviewed-by: Amaury Pouly

usb: document usb_status_event and #ifdef it with USB_STATUS_BY_EVENT

2015-01-08T15:45:11+00:00

Change-Id: I62cdb8ad71a598279fe99cc91d87eafda26cbbc7
Reviewed-on: http://gerrit.rockbox.org/1095
Reviewed-by: Amaury Pouly

usb: move usb charging function prototype from usb_core.h to usb.h

2015-01-08T15:44:55+00:00

Change-Id: Id29c60d3aa26f8badca6c38c1cbb2e5a39c554dc
Reviewed-on: http://gerrit.rockbox.org/1094
Reviewed-by: Amaury Pouly

Get rid of USE_ROCKBOX_USB

2015-01-08T15:07:12+00:00

Except for unfinished or experimental ports, it isthe case that
USE_ROCKBOX_USB and HAVE_USBSTACK are both defined or both undefined.
Furthermore, it is a leftover of some early developments on the USB stack and
doesn't make sense anymore.

Change-Id: Ic87a865b6bb4c7c9a8d45d1f0bb0f2fb536b8cad
Reviewed-on: http://gerrit.rockbox.org/1091
Reviewed-by: Amaury Pouly