First of all, this isn't fully tested yet. I can
see some issues poping up after this patchset which
I'm not sure if it's a race condition somewhere or
the HW is just misbehaving.
All in all, the IRQ handler looks cleaner now. There's
still lots of things to be done and before I'm going any
further, I'd like help testing this patchset.
Note that on multiple boots you might face some issues
with the XDR IRQ which aparently keeps getting retriggered
even though it gets acked and properly cleared. I didn't
look yet if there's an errata for that.
I'll give myself a break of the I2C driver because it's
just driving me nuts already. If you have the balls to
look over the unfinished patches (see that there are
a few patches which could be combined, will do that later)
and help out testing, reviewing, commenting...
Next steps (after this set is done) would be to get rid
of that stupid, nonsensical FIFO clear before starting
every transfer, fix up NAK handling, clean up debugging
messages, figure out why sometimes IRQs don't fire (AKA
"controller timed out" crap) and lots more.
For convenience it's also located on the following git
branch:
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git i2c
ps: boot tested on OMAP4 Panda. When it boots fine, it's actually
quite stable, I managed to do many transfers with the PMIC (checking
regulators' state) and it works very reliably (while true; cat
/sys/class/regulators/*/state; done works fine for multiple iterations);
Felipe Balbi (22):
i2c: omap: simplify num_bytes handling
i2c: omap: decrease indentation level on data handling
i2c: omap: add blank lines
i2c: omap: simplify omap_i2c_ack_stat()
i2c: omap: split out [XR]DR and [XR]RDY
i2c: omap: improve 1p153 errata handling
i2c: omap: re-factor receive/transmit data loop
i2c: omap: switch over to do {} while loop
i2c: omap: ack IRQ in parts
i2c: omap: switch I2C REV2 to threaded IRQ
i2c: omap: get rid of "count" variable
i2c: omap: get rid of the "complete" label
i2c: omap: if controller is suspended, bail out
i2c: omap: ack ARDY IRQ
i2c: omap: switch to devm_* API
i2c: omap: switch to platform_get_irq()
i2c: omap: drop Access Ready IRQ
i2c: omap: drop errata i207 from RRDY interrupt
i2c: omap: bus: add a receiver flag
i2c: omap: avoid unnecessary register read
i2c: omap: no need to reinitialize "stat"
i2c: omap: simplify errata check
drivers/i2c/busses/i2c-omap.c | 386 +++++++++++++++++++++++------------------
1 file changed, 216 insertions(+), 170 deletions(-)
--
1.7.10.4
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