In most devices, the button ladder is not actually derived from VDDIO but
from a constant voltage source, making it very easy to read it. However on
some devices like ther ZEN X-Fi Style, the ladder is wired to VDDIO we
can be changed so it's crucial that the button driver correctly scales the
values wrt VDDIO.
Change-Id: Ifc11abe2838fa7d16d0d60ecd96964a8dc5ea6d7
The hardware watchdog automatically shutdown the device after 10s of
inactivity, being defined as 10s without the tick IRQ fired (aka braindead
device).
The software IRQ mechanism is more interesting: it uses a very high priority
timer setup as one-shot to trigger after 5s of inactivity (but IRQ still
enabled). When detected, it patches the running code to insert a SWI
instruction so that on interrupt return it will trigger a SWI and produce
a meaningfull backtrace to debug the deadlock. This should allow to debug
freezes in IRQ context.
Change-Id: Ic55dad01201676bfb6dd79e78e535c6707cb88e6
Rewrite IRQ handling to allow nested IRQs: on each IRQ entry, we save the
parameters on the (IRQ) stack and then switch to SVC mode (with its own
stack) and renable interrupts. Make sure interrupt is properly acknowledged
by using the read side-effect (RSE) mode and handle priority levels as well.
Change-Id: I3fd68289b430c56bdd256868939238ff268e42b4
The port uses the imx233 soc, it's a STMP3650 based Samsung player
Change-Id: I50b6d7e77fd292fab5ed26de87853cd5aaf9eaa4
Reviewed-on: http://gerrit.rockbox.org/490
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
This reverts commit 462adf2a0f.
Leaving the card in TRAN results in a huge power consumption because some cards
and internal bridges do not automatically enter power saving mode in TRAN state.
Change-Id: If79efe8cf99b24174889b3a5ebbcb51b07085f58
The ZEN/ZEN-XFi seem to be very picky about the lcd. And they do not like
standby mode so I'm going to drop it, the OF doesn't use it anyway. I still
don't know what this "power" pin is about, obviously it's not real power but
the OF toggle it. Let's hope the lcd will finally become more stable with
fix: the driver now does full power on/off on enable/disable.
Change-Id: I1c465ee4f2462bc3d9507e5f575f0a181af60214
Choices are limited for those: i2c is either generic software or imx233
hardware and power is either none or with a gpio. So factor ever possible
combination in a single common file and use fmradio-target.h to supply the
required parameters. This will remove a bunch of duplicate code.
Change-Id: If12faeb2e371631cd39cc18a4c1d859812007934
The old code allowed each target to specify its adc targets but this proved
useless since the target rely directly on imx233/lradc for input method and
generic adc is mostly used for battery and debug. Remove all target specific
files and provide a generic implemenation. The targets can still specify a
battery temperature channel in powermgmt-target.h
Change-Id: I68cf2e3e46379d174ac6d774ffb237bb15a19ae3
Although there is no difference in the cost of a full or partial update,
it is preferable that the semantic of lcd_update_rect() be correct.
Change-Id: I8a168388b98e0dbd7237729b7fd8a62fa1885be1
The previous code disabled the irq when there were fired. This seems
unreliable for some mysterious reason. Instead simply disable them
before enabling the irq.
Change-Id: I7ee1aa25dbc41c7dd53aa7c7744aa5e4d70ff2d8
Reviewed-on: http://gerrit.rockbox.org/640
Reviewed-by: benjamin brown <foolshperson@gmail.com>
Tested-by: benjamin brown <foolshperson@gmail.com>
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>
The code was broken in two ways:
- it called storage_read_sectors with a wrong drive number
- calling storage_read_sectors too early at boot time will fail because
we are in the init function, so the drive is not yet registered.
To fix this, use a user provided read callback instead of storage read
functions.
Change-Id: I5ab79d48391fae619d5f8ae09c3d499fc43854c8
The setting is currently unused but it provides some documentation and basic
support for a more comprehensive implementation of read-only support.
Change-Id: I353c33ef765ef6e6c09d59e943da6654a311ad84
