rockbox/firmware/target/arm/ipod, branch master

nano2g: fix dangerous mutex in hold switch

2017-02-04T15:30:08+00:00

This is a quick patch to solve FS#13104, we can not disable the
clickwheel LDO from within interrupt code, so for the moment we
leave it enabled all the time, it is unknown how power comsumption
is affected when the hold switch is locked.

Change-Id: I8f675702e2b5becbcd9197c8b044e6b8daeea79f

iPod Classic: use PMU interrupts to detect hold switch

2016-05-26T00:15:28+00:00

Finally the hold switch workaround is removed and it is detected
in the same way as OF does.

Change-Id: Iceac6ca48ffd131b8ee9f62ffdc2b3e30eb02042

iPod Classic: clickwheel fixes

2015-12-17T09:26:51+00:00

Uses GPIO.E2 (Request To Send) to detect the holdswitch status,
it is a temporal workaround that seems to work on all models.

Holdswitch status must be detected to drive low GPIO.E2 (RTS)
and GPIO.E4 (Data Out) when the holdswitch is locked, otherwise
battery life decreases about 25%.

Holdswitch unlock action is detected by reading the HELLO message
that the external wheel controller sends when it is powered on,
this allows to quickly capture clickwheel activity after unlock.
GPIO.E2 is also used in case the HELLO message is missed because
the holdswitch was unlocked before Rockbox/bootloader starts.

These 2 lines (RTS and DOUT) can not be used to transmit messages
to the external clickwheel controller, not a problem, actually no
messages are sent while normal operation, only at initialization
stage.

Change-Id: I415fe54bfcbc2086d0f56d7affe6f789ce81a6db

Fix red/yellow

2015-01-12T11:02:24+00:00

Change-Id: Ie01251af2cd843979b5fdefcfa541ba377d13bd7

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

iPod Classic: Fix bidirectional clickwheel communication.

2014-10-02T10:56:37+00:00

This restores functionality that was broken in g#194 and committed as
revision 7ec426e497daa1b4a6082bf4e4e3df687b11db44.

Bidirectional communication is required to ask the clickwheel controller
for the initial button state during boot. Otherwise our driver would only
know about pressed buttons when the first change event is received,
which is too late for e.g. prevention of USB connection during boot.

This fix is also required to support the selection of OF, Rockbox,
Disk Mode, etc. in the iPod Classic Rockbox bootloader.

Change-Id: I127d54cf9e630d8075dd6d66f95dacb2816bfbc8
Reviewed-on: http://gerrit.rockbox.org/938
Reviewed-by: Michael Sparmann 
Tested: Michael Sparmann 
Reviewed-by: Marcin Bukat

Combine PortalPlayer .lds files into one for app and boot.

2013-07-19T12:18:16+00:00

These nearly identical files are multiplying like rabbits as PP targets
are added and make SoC-related changes a PITA. Just include the master
.lds file from the target one as was done for bootloader USB.

Change-Id: I65e9e653030f0688b1728e32ada16abf2932e029

Make INITDATA_ATTR work on everything that has INIT_ATTR enabled for code.

2012-05-01T05:28:50+00:00

Change-Id: If9936bfbbd3bc3eb2a3e3e290701b8517eabfb13

Classic/6G: click wheel controller powersave

2012-03-30T23:18:15+00:00

Mask click wheel controller clock gate when the hold switch is in
the locked position

Change-Id: I9de33db189afdb76cc5057e4c0e7efc587cf762b

Classic/6G: hold switch detection using GPIO

2012-03-27T22:51:22+00:00

Configures GPIO ports to detect holdswitch status instead of
polling the PMU via I2C, this fixes some random crashes

Change-Id: I407c9ca4c2c9203842f9e774b1c8d0455d59048c
Reviewed-on: http://gerrit.rockbox.org/194
Reviewed-by: Michael Giacomelli