Original patch by Stanislav Chizhik
Udpated by Igor Poretsky & myself

Change-Id: I472d4852ac25885658245f077723e4c98b9ad9b8

Both had 'Enabled' showing up a Add to Quick Screen option

Change-Id: Ief48a4d0ea2a473704a9a42d5863f1451dbfc6af

Original patch Michael Gentry
Updated by Igor Poretsky

Change-Id: Id0fd67d2b2f6c257e3cbbe9bfda5c0eace5caca5

Taken from the xvortex fork (Roman Stolyarov)
Ported, rebased, and cleaned up by myself.

Change-Id: I7b2bca2d29502f2e4544e42f3d122786dd4b7978

Change-Id: I36e37c7557d6eee07978046e549509ee628aba2e

Unifies time formatting in settings_list.c allows time format to
display as HH:MM:SS.MSS or any consecutive combination thereof
(hh:mm:ss, mm:ss, mm:ss.mss, ss.mss, hh, mm, ss ,mss)
works in INT and TABLE settings with the addition of flag 'F_TIME_SETTING'

Time is auto-ranged dependent on value

Adds talk_time_intervals to allow time values to be spoken similar to
display format:  x Hours, x Minutes, x Seconds, x Milliseconds

Table lookups merged or removed from recording, clip meter and lcd timeout
-String_Choice replaced with TABLE_SETTING or INT_SETTING for these
functions as well, cleaned-up cfg_vals that get saved to cfgfile

RTL Languages ARE supported

Negative values ARE supported

Backlight on/off are now Always and Never to share formatter with LCD
Timeout

Added flag to allow ranged units to be locked to a minimum index

Added flag to allow leading zero to be supressed from the largest unit

merged talk_time_unit() and talk_time_intervals()

optimized time_split()

optimized format_time_auto()

Backlight time-out list same as original

Change-Id: I59027c62d3f2956bd16fdcc1a48b2ac32c084abd

Modified version from ticket, taken from Igor Poretsky's tree, and
further modified to incorporate feedback.

Change-Id: I9284497d53a0247a51739d29fdc1db5fbbebfadc

This reverts commit 6f0320a9535bc1aa81d83fa879ac14d5ee603658.

Change-Id: I7425d422a4a0af7a49e9194cfe0bb55d431bc401

Allow user to select cpu undervolt

There have been quite a few issues across the SANSA AMS line related
to CPU undervolting while most players show greatly increased runtime
some crash.
Rather than constanly upping the voltage we now have a
setting with a safe value for all players and the option for lower voltages

I plan to add a few other options here later such as disk
timings and maybe some other clocks/experimental settings

Added: Disk Low speed option for AS3525v2 devices cuts
	frequency to 12 MHz from 24 MHz
Added: Disk Low speed option for AS3525v1 devices cuts
        frequency to 15.5 MHz from 31 MHz

Added: I2c Low Speed AS3525 devices, should be bigger improvement for v1 devices

Fixed: Debug menu for AS3525v2 No SDSLOT frequency,
	Showed IDE freq though it is unused

Added: DBOP and SSP underclocking affects display on v1/v2 respectively

Fixed: debug menu now has SSP frequency, and SSP_CPSR

Update: made settings menu more generic

Update: cleaned up code

Added: Clip v1 & Fuze v1 didn't have HAVE_ADJUSTABLE_CPU_VOLTAGE.
	not sure why but,  waiting on testing to confirm

Added: C200v2 and E200v2 devices and HAVE_ADJUSTABLE_CPU_VOLTAGE.

Fixed: v1 devices don't like display timing set lower (dbop)
       v1 devices don't have a divider set for ssp (causes divide by 0)

Fixed: ClipZip display lags with Max SSP divider changed from 0xFE to 0x32

Fixed: v1 devices didn't work properly with highspeed sd cards
	Added code from http://gerrit.rockbox.org/r/#/c/1704/
	Added powersave and IDE interface enable/disable

Added: V2 devices now have powersave enabled on sd interface

Update: cleaned up code, lang defines, added manual entries

Update ssp clock mechanism added calculated ssp divider to clipzip

Update turn display clock off when clip+ turns off display

Fixed: clipzip wrong register for SSP clock

Change-Id: I04137682243be92f0f8d8bf1cfa54fbb1965559b
TODO: add other players?

The implementation is not very complicated but there are a few things worth
noting. There was a previous "speaker enable" setting but it was a boolean.
I decided to replace it with a choice setting that has 2 options (on, off)
if headphones cannot be detect on this target, or 3 options (on, off, auto)
if we can detect headphones. This will break the old setting on target that
cannot detect jack but it makes the code more uniform and avoid maintaining
two settings with more #ifdef. The third option (auto) uses the LANG_AUTO
text, which I think is clear enough (disable speaker on jack plug).
In order to avoid code duplication (both in apps and firmware), I decided to
keep the audiohw_enable_speaker function as-is: it takes a boolean and doesn't
care about the speaker policy. I introduced a new audio_enable_speaker that
takes directly the mode (which follows the setting encoding): 0=off, 1=on
and 2=auto. This way one calls audio_enable_speaker and it changes the speaker
once to reflect the request mode. The apps code then uses this function in the
places where it makes sense: on setting load, setting change and jack (un)plug
event.

Change-Id: I027873f698eb4bc365d7c02b515297806355d9e2