Commit graph

81 commits

Author SHA1 Message Date
SUGIOKA Toshinobu
dd4da3a55f serial: sh-sci: fix sci interrupt handler
Fix up the error bit handling on SCI ports.

Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-07 16:51:21 +09:00
Magnus Damm
44e18e9eda sh-sci: update receive error handling for muxed irqs
This patch updates the receive error code for muxed
interrupts in the sh-sci driver.

Receive error interrupts may be generated by the hardware
if RE or REIE bits in SCSCR are set. Update the muxed
interrupt handling code to acknowledge error interrupts
if RE or REIE is set, instead of only acknowledging if
REIE is set.

Without this patch error interrupts may be generated but
never acked resulting in a "nobody cared" crash.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-03 17:45:58 +09:00
Paul Mundt
6daa79b3c1 serial: sh-sci: Move over to dev_pm_ops.
Presently the boot log whines about suspend/resume hooks at the platform
driver level, move these over to dev_pm_ops.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-15 07:07:38 +09:00
SUGIOKA Toshinobu
dd0a3e77c8 serial: sh-sci: Fix up PORT_SCI console output ordering.
Fix SCI transmission sequence in console output function.

This reorders the write sequence to match the SH-3 manual, and corrects
a console corruption bug observed on SH-3 SCI.

Signed-off-by: Toshinobu Sugioka <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-02 12:11:18 +09:00
Paul Mundt
af777ce42d sh: clkfwk: module_clk -> peripheral_clk rename.
For consistenct naming, and to allow us to fix up some confusion in the
SH-Mobile clock framework, amongst other places.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-13 16:59:40 +09:00
Yoshinori Sato
168f36237b serial: sh-sci: Fix up h8300 support.
- Dummy SCIF functions define.
- h8300 specific header include.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:54:47 +09:00
Paul Mundt
54507f6ee9 serial: sh-sci: Fix up section mismatch in error path.
The sci_probe_single() path attempts to use sci_remove() for the error
path, while sci_remove() is still flagged as __devexit. So, we simply
discard the section annotation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:48:33 +09:00
Magnus Damm
501b825d01 sh-sci: improve clock framework support
Use enable/disable hooks for clock framework integration.
Make sure we control the clock for the serial console as well.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:22:26 +09:00
Magnus Damm
08f8cb315f sh-sci: ioremap() in a single place
Handle ioremap() in sci_config_port only.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:16:07 +09:00
Magnus Damm
7ed7e0711b sh-sci: replace sci_init_ports()
Replace sci_init_ports() with sci_init_single().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:09:20 +09:00
Magnus Damm
0ee7071292 sh-sci: allow single port platform devices
Allow registration of single port sh-sci platform devices.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:08:53 +09:00
Magnus Damm
a5660adae8 sh-sci: use to_sci_port() if possible
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:04:21 +09:00
Magnus Damm
dc8e6f5bfc sh-sci: rework serial console support
Rework sh-sci serial console code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 23:01:12 +09:00
Magnus Damm
9080b72819 sh-sci: remove early_sci_setup()
Remove unused early_sci_setup() function from sh-sci.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 22:53:58 +09:00
Magnus Damm
e552de2413 sh-sci: add platform device private data
This patch adds per-platform private data to the sh-sci driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-08 22:50:47 +09:00
Paul Mundt
0fb849b9d7 sh: Integrate the SH-5 onchip_remap() more coherently.
Presently this is special-cased for early initialization. While there are
situations where these static early initializations are still necessary,
with minor changes it is possible to use this for the regular ioremap
implementation as well. This allows us to kill off the special-casing for
the remap completely and to start tidying up all of the SH-5
special-casing in drivers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-07 18:10:27 +09:00
Kuninori Morimoto
55ba99eb21 sh: Add support for SH7786 CPU subtype.
This adds preliminary support for the SH7786 CPU subtype.

While this is a dual-core CPU, only UP is supported for now. L2 cache
support is likewise not yet implemented.

More information on this particular CPU subtype is available at:

	http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-03 15:40:25 +09:00
Magnus Damm
973e5d525d serial: sh-sci: console drainage
Modify the serial console code to wait for the transmit FIFO,
make sure all bits have been put on the wire before returning.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27 16:50:00 +09:00
Paul Mundt
b0c50ad717 serial: sh-sci: Fix up port pinmux for SH7366.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:49 +09:00
Paul Mundt
1f6fd5c916 serial: sh-sci: sci_poll_get_char() is only used by CONFIG_CONSOLE_POLL.
sci_poll_put_char() happens to also be used by the serial console,
while sci_poll_get_char() is only used by CONFIG_CONSOLE_POLL. Add
another gnarly ifdef to shut up the compiler.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:46 +09:00
Paul Mundt
d5701647f1 serial: sh-sci: Generalize port pin initialization.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:43 +09:00
Paul Mundt
d830fa4584 serial: sh-sci: Tidy up fifo overrun error handling.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:43 +09:00
Paul Mundt
762c69e3ca serial: sh-sci: pr_debug() -> dev_dbg() conversion.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:43 +09:00
Paul Mundt
027e687249 serial: sh-sci: Fix up the cpufreq notifier to use the proper port clock.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:43 +09:00
Paul Mundt
07d2a1a1cd serial: sh-sci: Implement CONSOLE_POLL support and kill off old kgdb console.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:44:04 +09:00
Michael Trimarchi
e7c98dc76d serial: sh-sci: Codestyle cleanup patch.
Trivial coding style cleanups.

Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22 18:42:52 +09:00
Paul Mundt
272966c070 serial: sh-sci: Reorder the SCxTDR write after the TDxE clear.
Under qemu there is a race between the TDxE read-and-clear and the SCxTDR
write. While on hardware it can be gauranteed that the read-and-clear
will happen prior to the character being written out, no such assumption
can be made under emulation. As this path happens with IRQs off and the
hardware itself doesn't care about the ordering, move the SCxTDR write
until after the read-and-clear.

Signed-off-by: Vladimir Prus <vladimir@codesourcery.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-13 17:46:06 +09:00
Yoshihiro Shimoda
1a22f08dbd serial: sh-sci: fix cannot work SH7723 SCIFA
SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO.
So this patch adds new type(PORT_SCIFA) and change some type checking.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12 12:29:56 +09:00
Michael Trimarchi
a8884e3415 sh: Fix up the shared IRQ demuxer's control bit testing logic.
Correct the interrupt handler in sh4 serial device, return the correct
value and check for what is anabled in the SCSCR register. The sh7722 is
broken just sending a break using minicom.

Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-31 16:10:23 +09:00
Paul Mundt
86d758ef2c Merge branches 'sh/serial-rework' and 'sh/oprofile' 2008-10-28 19:44:15 +09:00
Linus Torvalds
9301975ec2 Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...
2008-10-20 13:23:01 -07:00
Yinghai Lu
a62c413373 drivers/serial: use nr_irqs
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16 16:52:06 +02:00
Paul Mundt
15c73aaa44 serial: sh-sci: Kill off all of the SCI/SCIF special casing.
This was added at a time when the compiler did a less than stellar job of
optimizing out dead code. These days this tends to be less of a concern,
so kill it all off.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-02 19:47:12 +09:00
Paul Mundt
bc0f424faa Merge branch 'sh/g3-prep' 2008-10-02 19:14:11 +09:00
Paul Mundt
a2159b5221 serial: sh-sci: Dynamic clock management depends on HAVE_CLK.
Presently this is conditionalized on sh, and disabled for sh64.
Now that SH-5 ties in to the clock framework, the sh64 exception
can be dropped. Additionally, ARM will want to use the same hooks
once SH-Mobile G3 grows clock framework support, so switch these
paths over to HAVE_CLK now.

Once the H8 and ARM sh-sci users hook up HAVE_CLK, the driver can
be switched over to having an outright dependency on it and the
ifdefs can go away.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-02 19:09:13 +09:00
Paul Mundt
7ff731aeba serial: sh-sci: Handle the general UPF_IOREMAP case.
Presently we don't do much with UPF_IOREMAP other than special case it
for SH-5's onchip_remap() on the early console. Tie this in generically
for platforms that need the remap.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-01 15:46:58 +09:00
Paul Mundt
fa43972fab sh: fixup many sparse errors.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08 10:35:04 +09:00
Nobuhiro Iwamatsu
c63847a362 sh: Add SCIF2 support for SH7763.
SH7763 has 3 SCIF device. Current code supports SCIF0 and 1.
SCIF0 and 1 are same register constitution, but only SCIF2 is different.
I added support of SCIF2.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:29 +09:00
Takashi Iwai
a88487c79b Fix compile errors in SGI console drivers (linux-next tree)
The below is the patch to replace blindly all possible places,
including Jack's fixes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
(Reviewed and checked rather than blindly added)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20 17:12:36 -07:00
Harvey Harrison
bfd3c7a728 sh: use the common ascii hex helpers
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-16 15:09:08 +09:00
Magnus Damm
346b746300 sh-sci: improve sh7722 support
Improve sh7722 support for SCIF1 and SCIF2 and separate code
from sh7366 implementation.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08 19:51:57 +09:00
Paul Mundt
85f094ecb1 sh: Enable use of the clk fwk on SH-5.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-05-08 19:51:42 +09:00
Harvey Harrison
71cc2c2152 serial: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:54 -07:00
Paul Mundt
178dd0cd28 sh: Add support for SH7723 CPU subtype.
This adds basic support for the SH7723 MobileR2 CPU.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-04-18 09:50:07 -07:00
Kay Sievers
e169c13964 serial: fix platform driver hotplug/coldplug
Since 43cc71eed1, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable serial
platform drivers, to re-enable auto loading.

NOTE that Kconfig for some of these drivers doesn't allow modular builds, and
thus doesn't match the driver source's unload support.  Presumably their
unload code is buggy and/or weakly tested...

[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-15 19:35:40 -07:00
Yutaro Ebihara
cae167d3d7 serial: sh-sci: Fix fifo stall on SH7760/SH7780/SH7785 SCIF.
There was an off-by-1 in the SCRFDR calculation that caused writes over
128-bytes to hang in the FIFO. Fix it up.

Signed-off-by: Yutaro Ebihara <ebiharaml@si-linux.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-11 13:58:50 +09:00
Paul Mundt
96de1a8f02 serial: Move asm-sh/sci.h to linux/serial_sci.h.
This header is needed on other architectures as well (namely h8300),
which currently fails to build without this in place. Rather than
duplicating the port definition completely there, just move this to a
common location instead.

This should get h8300 working again for 2.6.25, in addition to the
changes already pushed by Sato-san in -rc2.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-26 14:52:45 +09:00
Magnus Damm
9109a30e5a sh: add support for sh7366 processor
This patch adds sh7366 cpu supports. Just the most basic things like interrupt
controller, clocks and serial port are included at this point.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:10 +09:00
Yoshihiro Shimoda
7d740a066f sh: Add support for SH7763 CPU subtype.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:19:02 +09:00
Yoshihiro Shimoda
31a49c4bf8 sh: Add support for SH7721 CPU subtype.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-01-28 13:19:02 +09:00