rockbox/firmware/drivers/audio/as3514.c, branch master

as3543: fix audio gap when switching from dac to line-in/recording

2016-08-29T06:16:27+00:00

Also clarity parts of the code. The old code suffered from two defects:
- it was very unclear because it made changes to whole registers
  (using as3514_write) instead of fields (using as3514_set/clear/write_masked).
  Also the routing code was spread accross several functions which made it hard to
  follow.
- it did not properly reroute audio on monitor changes. In particular, the following
  could happen: when switching from DAC to radio, the code would fail to clear
  SUM_off, resulting in a weird situation where the main mixer was off
  (SUM_off) but the headphone where using the main mixer as input. Incredibly this
  worked anyway (at least on AMSv2 and YP-R0) but resulted in strange volume gaps
  between DAC and radio mode.

Change-Id: I7826835fdb59c21f6483b223883ca9289e85caca

as3514: fix bug in volume management on AS3543 targets which are not AS3525v2

2016-02-12T23:04:33+00:00

Some old code made the assumption that CONFIG_CPU == AS3525v2 if and only if
HAVE_AS3543, which is not true on targets like the Samsung YP-R0. This fixes
several issues on such targets like a huge volume gap between -39dB and -40dB
and a volume artificially capped at -72dB instead of -82dB.

Change-Id: Ib1c883ac593c0c3ce5e2bf4eb408924ce5f5ad93

AS3543: Fix increasing noise and power consumption if booted through rolo

2016-02-01T03:20:06+00:00

Change-Id: I99fe6d09b15689e5dd0179714bbe363aed922d10

AS3543: Fix recording volume setting and voice

2015-06-02T00:04:34+00:00

Fix regressions introduced by 42219b6e7

Change-Id: I1f3edb5f269f60e9431b45a43c4370836ecac733

Bypass the AS3543 audio mixer at higher volumes.

2015-01-19T21:38:51+00:00

This change reduces noise and distortion very slightly at higher volumes.

Change-Id: I1a2eb160c2956de90764c0bb11677fdac8d96dec

kernel: Break out kernel primitives into separate files and move to separate dir.

2014-03-03T17:11:57+00:00

No code changed, just shuffling stuff around. This should make it easier to
build only select parts kernel and use different implementations.

Change-Id: Ie1f00f93008833ce38419d760afd70062c5e22b5

Do not include kernel.h in system.h.

2014-01-05T18:35:23+00:00

system.h doesn't need it on its own and this change makes it less
dependant on Rockbox internals.

Change-Id: I4e1e4108a52a7b599627a829204eb82b392fc6d6

Do some cleanup, adjustment and a couple fixes to recent sound changes.

2013-04-23T00:38:17+00:00

* SOUND_x enum can be generated by audiohw_settings.h along with settings
entries and sound_val2phys.

* VOLUME_MIN and VOLUME_MAX are no longer necessary within sound.c. If
you need them, they are for target-defined purposes.

* Fix up SDL volume implementation in sdl.c. Move sim volume calculation
code to pcm-sdl.c.

* Min trigger tresholds were based upon VOLUME_MIN for some reason.
These setting have nothing to do with playback volume. Since it is no
longer present, set these at -89dB which is the minimum peak meter
sensitivity setting.

* Fix an oversight in wm8758.c. I forgot to add the dB->register
conversion to audiohw_set_volume.

Change-Id: Ie1df33f1793eee75e6793f16bc7bddd16edb7f75

Hopefully knock out most of the red and yellow from 0c7b787.

2013-04-15T16:39:04+00:00

Change-Id: Ib8dd0d011b11ee3eded3025308f19ddb5d151b59

Straighten out the mad twisted state of sound.c and related areas.

2013-04-15T16:02:05+00:00

This is going right in since it's long overdue. If anything is goofed,
drop me a line or just tweak it yourself if you know what's wrong. :-)

Make HW/SW codec interface more uniform when emulating HW functionality
on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to-
DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX"
APIs are all in sound.c with none in DSP code any longer.

Reduce number of settings definitions needed by each codec by providing
defaults for common ones like balance, channels and SW tone controls.

Remove need for separate SIM code and tables and add virtual codec header
for hosted targets.

Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b