CPU frequency scaling is basically useless without scaling the
memory frequency. On the i.MX233, the EMI (external memory
interface) and DRAM blocks are responsable for the DDR settings.
This commits implements emi frequency scaling. Only some settings
are implemented and the timings values only apply to mDDR
(extracted from Sigmatel linux port) and have been checked to
work on the Fuze+ and Zen X-Fi2/3. This feature is still disabled
by default but I expected some battery life savings by boosting
higher to 454MHz and unboosting lower to 64MHz.
Note that changing the emi frequency is particularly tricky and
to avoid writing it entirely in assembly we rely on the compiler
to not use the stack except in the prolog and epilog (because
it's in dram which is disabled when doing the change) and to put
constant pools in iram which should always be true if the
compiler isn't completely dumb and since the code itself is put
in iram. If this proves to be insufficient, one can always switch
the stack to the irq stack since interrupts are disabled during
the change.
Change-Id: If6ef5357f7ff091130ca1063e48536c6028f23ba
Merge sd and mmc drivers into a single sdmmc driver. This allows
some factoring of the code and simplify bug fixing. Also fix the
dma/cache related issue by doing all transfers via a correctly
aligned buffer. The current code is not smart enough to take
advantage of large user buffers currently but at least it is safe!
Change-Id: Ib0fd16dc7d52ef7bfe99fd586e03ecf08691edcd
Logs information, errors, etc to disk using the register_storage_idle_func
mechanism to write to the disk when available. Currently, this is disabled
in normal builds, but can be enabled by adding ROCKBOX_HAS_LOGDISKF to the
config file. By default, it uses a 2KB buffer and drops text if the buffer
overflows.
The system includes a simple warning level mechanism that can be used to by
default exclude non-serious errors from logging on release builds.
Change-Id: I0a3d186a93625c7c93dae37b993a0d37e5a3a925
Reviewed-on: http://gerrit.rockbox.org/288
Reviewed-by: Jonathan Gordon <rockbox@jdgordon.info>
Tested-by: Michael Giacomelli <mgiacomelli@gmail.com>
Reviewed-by: Michael Giacomelli <mgiacomelli@gmail.com>
Basically it uses the default SI4700 radio chip driver, the only thing that's different is the I2C access,
written specifically to interact with my kernel module.
Next things to add are:
- RDS support!
Change-Id: I0ed125641e00f93124d7a34f90dd508e7f1db5a4
Signed-off-by: Lorenzo Miori <memorys60@gmail.com>
Refactor native/hosted implementation seperation while at it
(no wrappers starting with _ anymore).
Change-Id: If68ae89700443bb3be483c1cace3d6739409560a
The freescale firmware partitions has a lots of quirks that
need to be dealt with, so do it the proper way.
Change-Id: I8a5bd3fb462a4df143bc6c931057f3ffedd4b3d3
The icoll code now has an IRQ storm detection mechanism which
will prevent the device from hard freezing in case it happen.
Change-Id: I9861238dce61d29af1e48f9c534ec63a7f23465c
Simplified stack unwinder for ARM. This is port of
http://www.mcternan.me.uk/ArmStackUnwinding/
backtrace() is called from UIE() on native targets
and from panicf() on both native and ARM RaaA.
Change-Id: I8e4b3c02490dd60b30aa372fe842d193b8929ce0
Now lcd_framebuffer is the only framebuffer in the system. We still use a ARM-buffered buffer
which serve as an intermediate buffer for copying, to accomodate the requirement of the controller.
We implement lcd_update_rect() properly using this new scheme (this requires two little quirks),
this allows to implement lcd_blit_yuv with the right semantic (bypasses the framebuffer). YUV to RGB
conversion is still done in software but the DCP CSC should be able to do that but the hardware rotation
scheme is not the same as our software so it will require some tricks.
Change-Id: I0752e9c2f1a705d2e6a6010084e1f150965d8370
Core, codecs and plugins link it separately so this gets rid of SOURCES trickery.
Don't build it for hosted targets.
Change-Id: If15ef90e93cd218a4352ae8e89eea95d3122452f
move prototypes to ascodec.h
move code to ascodec*.c
YPR0: use adc-as3514.c instead of duplicating it
TODO: merge as3514.h and ascodec.h ?
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31626 a1c6a512-1295-4272-9138-f99709370657
* Introduce CONFIG_BATTERY_MEASURE define, to allow targets (application)
to break powermgmt.c's assumption about the ability to read battery voltage.
There's now additionally percentage (android) and remaining time measure
(maemo). No measure at all also works (sdl app). If voltage can't be measured,
then battery_level() is king and it'll be used for power_history and runtime
estimation.
* Implement target's API in the simulator, i.e. _battery_voltage(), so it
doesn't need to implement it's own powermgmt.c and other stubs. Now
the sim behaves much more like a native target, although it still
changes the simulated battery voltage quickly,
* Other changes include include renaming battery_adc_voltage() to
_battery_voltage(), for consistency with the new target functions and
making some of the apps code aware that voltage and runtime estimation
is not always available.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31548 a1c6a512-1295-4272-9138-f99709370657
Voltage can be read using as3543 adc (i.e. ascodec api, on this target implemented
via ioctl()). TODO: Look into possibly controlling charging more by re-using
powermgmt-ascodec.c. However, charging seems to be controlled by the kernel,
so may not be needed.
Charger state can be read using /dev/minivet. It allows to differentiate between
wall charger and usb charging, but that's not implemented (is it even worthwhile?)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31470 a1c6a512-1295-4272-9138-f99709370657
This port is a hybrid native/RaaA port. It runs on a embedded linux system,
but is the only application. It therefore can implement lots of stuff that
native targets also implement, while leveraging the underlying linux kernel.
The port is quite advanced. User interface, audio playback, plugins work
mostly fine. Missing is e.g. power mangement and USB (see SamsungYPR0 wiki page).
Included in utils/ypr0tools are scripts and programs required to generate
a patched firmware. The patched firmware has the rootfs modified to load
Rockbox. It includes a early/safe USB mode.
This port needs a new toolchain, one that includes glibc headers and libraries.
rockboxdev.sh can generate it, but e.g. codesourcey and distro packages may
also work.
Most of the initial effort is done by Lorenzo Miori and others (on ABI),
including reverse engineering and patching of the original firmware,
initial drivers, and more. Big thanks to you.
Flyspray: FS#12348
Author: Lorenzo Miori, myself
Merry christmas to ypr0 owners! :)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31415 a1c6a512-1295-4272-9138-f99709370657
The new menu is very helpful on RaaA, but also shown in the sim. It shows
the process cpu usage, process' time stats (user,sys,real) and the cpu
frequency stats.
It uses a thread to sample the data, however the thread is not created
until the menu is visited for the first time.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31364 a1c6a512-1295-4272-9138-f99709370657
Massage the way it interfaces a bit to make things more flexible.
The chroma_buf scheme on Sansa Connect and Creative ZVx calling the
lcd_write_yuv420_lines implementation in lcd-as-memframe.S with five params
with a chroma buffer that the function can't use wouldn't work anyway so just
have them use the stock implementation (really, how was that working?).
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31335 a1c6a512-1295-4272-9138-f99709370657
