Commit graph

16 commits

Author SHA1 Message Date
Michael Sevakis
c9dad05554 i.MX31: need an additional ISR lockout instance when closing driver.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31539 a1c6a512-1295-4272-9138-f99709370657
2012-01-03 16:08:28 +00:00
Michael Sevakis
5a8da163c8 i.MX31 - Dethreading operations continue
Dispense with "pmic" thread and process PMIC events directly within ISR. Add
sense bit reading as part of the handling.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31528 a1c6a512-1295-4272-9138-f99709370657
2012-01-02 18:32:35 +00:00
Michael Sevakis
4e8320d2ec i.MX31: Rename something
Might as well rename spi_enable_module to spi_enable_node for consistency
as well so long as I'm being picky.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31442 a1c6a512-1295-4272-9138-f99709370657
2011-12-26 15:43:11 +00:00
Michael Sevakis
d56daa1f7e i.MX31: Silly little change to enable/disable a SPI
Unify spi_enable/disable_module into one spi_enable_module call for API
consistency's sake with I2C driver.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31441 a1c6a512-1295-4272-9138-f99709370657
2011-12-26 15:30:51 +00:00
Michael Sevakis
292e7cab73 Gigabeat S: PMIC SPI improvement and bugfixes.
Nick some aspects from the as3525 ascodec driver to improve throughput in
the beast's SPI communications by switching tranfer descriptors to the
caller's stack and getting rid of thread synchronization.

Fix a bug that suddenly became obvious that could permanently stall the SPI
driver because all data could be shifted out before the interrupt could get
serviced. In that case, it needs a kick to restart it. Should probably put
the SPI interrupt priority above DVFS.

A tweak to the event registration interface to simplify it.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31353 a1c6a512-1295-4272-9138-f99709370657
2011-12-18 10:41:43 +00:00
Boris Gjenero
17ed3253fc Add const to global pointers to strings.
When a global pointer is not declared as constant, gcc will put it in
memory. Getting the address of the string it points to requires loading
the address of the pointer and then loading the pointer. When the pointer
is declared constant, the address of the string is loaded directly.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31345 a1c6a512-1295-4272-9138-f99709370657
2011-12-17 18:31:55 +00:00
Michael Sevakis
12375d1d3a Merge functionality of wakeups and semaphores-- fewer APIs and object types. semaphore_wait takes a timeout now so codecs and plugins have to be made incompatible. Don't make semaphores for targets not using them.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29492 a1c6a512-1295-4272-9138-f99709370657
2011-03-02 08:49:38 +00:00
Michael Sevakis
480c663e5b i.MX31: Now that it matters because there's a debug screeen that allows changing things while running, some DVFS/DPTC stuff has to be done more carefully. Trim out some stuff and group functions better as well.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29122 a1c6a512-1295-4272-9138-f99709370657
2011-01-23 20:21:35 +00:00
Michael Sevakis
e286b0bbc0 Remove atomic register bit manipulation functions from i.MX and s3c target code and introduce generic functions for ARM (bitmod32, bitset32, and bitclr32). Multiprocessor support is possible but just not implemented at the moment, only interrupt lockout.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27188 a1c6a512-1295-4272-9138-f99709370657
2010-06-30 02:02:46 +00:00
Michael Sevakis
60f843bf18 Configure Gigabeat S with EABI compiler by default. Implement the INIT section that this enables (due to selective need for long calls). Remove pcm_postinit from INIT section since it's asynchronous. Disable strict aliasing on SPC codec for now just to shut it up.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26779 a1c6a512-1295-4272-9138-f99709370657
2010-06-11 14:39:35 +00:00
Michael Sevakis
d7ef247412 i.MX31/Gigabeat S minor cleaning: Make HW access more obvious in places I forgot to do earlier. Reduce the number of structs that need to be filled-out for some drivers just to simplify a little. Change some types.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25870 a1c6a512-1295-4272-9138-f99709370657
2010-05-07 10:53:19 +00:00
Michael Sevakis
931e06de64 i.MX31/Gigabeat S: Actually enable DPTC which can set optimal voltage for 528MHz. Requires an SPI and PMIC interface rework because of the low-latency needs for the DPTC to work best with minimal panicing. SPI can work with multitasking and asynchronously from interrupt handlers or normal code.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25800 a1c6a512-1295-4272-9138-f99709370657
2010-05-04 10:07:53 +00:00
Michael Sevakis
11cca264ff i.MX31/Gigabeat S: Implement frequency and voltage scaling-- 1.6V for 528MHz, and 1.35V for 264MHz and 132MHz. Keep DPTC overdrive ( > 400MHz) voltage scaling off for now because of uncertainties. Simplify the (working) mess later.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25699 a1c6a512-1295-4272-9138-f99709370657
2010-04-23 15:32:50 +00:00
Michael Sevakis
79d90b9e76 Gigabeat S/i.MX31: Continue, and most likely complete, the platform/player-specific code/data shuffling begun in r25547.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25564 a1c6a512-1295-4272-9138-f99709370657
2010-04-10 09:24:06 +00:00
Michael Sevakis
eb755ec351 Gigabeat S: Slow down the SPI clock to 1/8 current speed. It seems lower voltages can reveal the weakness that forbids maximum-speed clocking per the SPI spec. OF leaves it set much slower. Push it a bit over OF since it's been gotten away with fairly cleanly so far. Settings on pins and interface to be more thoroughly investigated.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25554 a1c6a512-1295-4272-9138-f99709370657
2010-04-09 13:21:32 +00:00
Michael Sevakis
7abf2b53a4 Gigabeat S/i.MX31: Sort files in the /target tree into things that are SoC-generic (into /imx31) and player-specific (into /gigabeat-s, based upon current appearances). Move i2s clock init into the appropriate file. Housekeeping only-- no functional changes.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657
2010-04-09 01:21:53 +00:00
Renamed from firmware/target/arm/imx31/gigabeat-s/mc13783-imx31.c (Browse further)