Michael Sevakis
292e7cab73
Gigabeat S: PMIC SPI improvement and bugfixes.
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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
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.
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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
54c649697b
Gigabeat S: Implement LCD contrast, invert and flip modes. Enhance LCD power management. Include init data but it's not needed yet (identical to Gigabeat F).
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26154 a1c6a512-1295-4272-9138-f99709370657
2010-05-18 23:50:00 +00:00
Michael Sevakis
affea5fe9e
i.MX31: Make some style changes to some driver code so that hardware vs. variable access is more obvious to the eye. Change a few data types and qualifiers. No functional differences.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25865 a1c6a512-1295-4272-9138-f99709370657
2010-05-07 02:29:18 +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.
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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
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.
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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657
2010-04-09 01:21:53 +00:00
