linux-stable.git/drivers/tty/serial/sh-sci.h, branch linux-3.2.y

serial: sh-sci: FIFO sizing helper consolidation.

2011-06-14T08:38:19+00:00

This consolidates all of the TX/RX fill/room nonsense in to a single set
of fairly heavyweight definitions. The implementation goes in descending
order of complexity, testing the register map for capabilities until we
run out of options and do it the legacy SCI way. Masks are derived
directly from the per-port FIFO size, meaning that platforms with FIFO
sizes not matching the standard port types will still need to manually
fix them up.

This also fixes up a number of issues such as tx_empty being completely
bogus for SCI and IrDA ports, some ports using masks smaller or greater
than their FIFO size, and so forth.

Signed-off-by: Paul Mundt

serial: sh-sci: Abstract register maps.

2011-06-14T03:40:19+00:00

This takes a bit of a sledgehammer to the horribly CPU subtype
ifdef-ridden header and abstracts all of the different register layouts
in to distinct types which in turn can be overriden on a per-port basis,
or permitted to default to the map matching the port type at probe time.

In the process this ultimately fixes up inumerable bugs with mismatches
on various CPU types (particularly the legacy ones that were obviously
broken years ago and no one noticed) and provides a more tightly coupled
and consolidated platform for extending and implementing generic
features.

Signed-off-by: Paul Mundt

serial: sh-sci: More unused define purging.

2011-06-08T10:13:06+00:00

Signed-off-by: Paul Mundt

serial: sh-sci: Consolidate RXD pin handling.

2011-06-08T09:51:32+00:00

Non-SCI parts do not have the special port reg necessary for cases where
the RX and SCI pins are muxed and need to be manually polled, so these
like always fall back on the normal FIFO processing paths. SH7760 is in a
class in and of itself with regards to mapping its SIM card interface via
the SCI port class despite not having any of the RXD lines wired up and
so implicitly behaving more like a SCIF in this regard. Out of the other
CPUs, some support the port check via the same block while others do it
through an external SuperI/O, so it's not even possible to perform the
check relative to the ioremapped cookie offset, so the separate read
semantics are preserved here, too.

Signed-off-by: Paul Mundt

serial: sh-sci: Generalize overrun handling.

2011-06-08T09:19:37+00:00

This consolidates all of the broken out overrun handling and ensures that
we have sensible defaults per-port type, in addition to making sure that
overruns are flagged appropriately in the error mask for parts that
haven't explicitly disabled support for it.

Signed-off-by: Paul Mundt

serial: sh-sci: Kill off some more unused definitions.

2011-06-08T08:13:20+00:00

Signed-off-by: Paul Mundt

serial: sh-sci: Tidy up ioread/write wrappers, kill off unused SCI helper.

2011-06-08T08:06:25+00:00

Signed-off-by: Paul Mundt

serial: sh-sci: Kill off bitrotted H8/300 support.

2011-06-06T03:40:16+00:00

h8300 has never been updated upstream to support the conversion to the
driver model (which happened mid-2.5), and it doesn't seem likely that it
ever will. Kill off the remaining bitrotted support to reduce the
maintenance burden going forward.

Signed-off-by: Paul Mundt

sh: sh-sci: sh7377 and sh73a0 build fixes

2011-05-23T03:41:37+00:00

Fix sh7377 and sh73a0 build failure:

drivers/tty/serial/sh-sci.c: In function 'scif_txfill':
drivers/tty/serial/sh-sci.c:338: error: implicit declaration of function 'sci_SCTFDR_in'
drivers/tty/serial/sh-sci.c: In function 'scif_rxfill':
drivers/tty/serial/sh-sci.c:351: error: implicit declaration of function 'sci_SCRFDR_in'
make[3]: *** [drivers/tty/serial/sh-sci.o] Error 1
make[2]: *** [drivers/tty/serial] Error 2
make[1]: *** [drivers/tty] Error 2
make: *** [drivers] Error 2

Signed-off-by: Magnus Damm 
Signed-off-by: Paul Mundt

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework

2011-01-26T09:23:27+00:00