serial: sh-sci: console Runtime PM support

Add Runtime PM context save/restore support to
the SCIF driver. Tested on the AP4EVB console.

Signed-off-by: Magnus Damm <damm@opensou

serial: sh-sci: console Runtime PM support

Add Runtime PM context save/restore support to
the SCIF driver. Tested on the AP4EVB console.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: fix DMA build by including dma-mapping.h

Include dma-mapping.h to fix build of the sh-sci driver on
SH-Mobile ARM (sh73a0) when CONFIG_SERIAL_SH_SCI_DMA=y:

drive

serial: sh-sci: fix DMA build by including dma-mapping.h

Include dma-mapping.h to fix build of the sh-sci driver on
SH-Mobile ARM (sh73a0) when CONFIG_SERIAL_SH_SCI_DMA=y:

drivers/tty/serial/sh-sci.c: In function 'sci_rx_dma_release':
drivers/tty/serial/sh-sci.c:1182:3: error: implicit declaration of function 'dma_free_coherent'
drivers/tty/serial/sh-sci.c: In function 'work_fn_tx':
drivers/tty/serial/sh-sci.c:1333:2: error: implicit declaration of function 'dma_sync_sg_for_device'
drivers/tty/serial/sh-sci.c: In function 'sci_request_dma':
drivers/tty/serial/sh-sci.c:1498:3: error: implicit declaration of function 'dma_map_sg'
drivers/tty/serial/sh-sci.c:1527:3: error: implicit declaration of function 'dma_alloc_coherent'
drivers/tty/serial/sh-sci.c:1527:10: warning: assignment makes pointer from integer without a cast
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 <damm@opensource.se>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Fix up default regtype probing.

Presently the default regtype probing inadvertently bails out due to an
inverted error check. This fixes it up, and gets platforms without

serial: sh-sci: Fix up default regtype probing.

Presently the default regtype probing inadvertently bails out due to an
inverted error check. This fixes it up, and gets platforms without
explicit regtype specifications working again.

Reported-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Fix up pretty name printing for port IRQs.

Presently these were all using the same static string with no regard to
dev_name() and the like. This implements a bit of rewor

serial: sh-sci: Fix up pretty name printing for port IRQs.

Presently these were all using the same static string with no regard to
dev_name() and the like. This implements a bit of rework to name the IRQ
dynamically, as it should have been doing all along anyways.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Kill off per-port enable/disable callbacks.

Ultimately we want everything to be going through the clock framework and
runtime pm, so kill off the per-port callbacks that

serial: sh-sci: Kill off per-port enable/disable callbacks.

Ultimately we want everything to be going through the clock framework and
runtime pm, so kill off the per-port callbacks that enabled ports to
bypass the common infrastructure.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Add missing module description/author bits.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

serial: sh-sci: Regtype probing doesn't need to be fatal.

This was using a BUG_ON(), but it's not strictly necessary, so relax the
constraints a bit.

Signed-off-by: Paul Mundt <

serial: sh-sci: Regtype probing doesn't need to be fatal.

This was using a BUG_ON(), but it's not strictly necessary, so relax the
constraints a bit.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Support generic SCLSR overrun detection.

For all ports with a valid SCLSR register we can use the generic FIFO
overrun detection logic. Test the validity of the SCLSR reg

serial: sh-sci: Support generic SCLSR overrun detection.

For all ports with a valid SCLSR register we can use the generic FIFO
overrun detection logic. Test the validity of the SCLSR register rather
than depending explicitly on port type, which can be ambiguous for the
SCIFA/B types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: FIFO sizing helper consolidation.

This consolidates all of the TX/RX fill/room nonsense in to a single set
of fairly heavyweight definitions. The implementation goes in d

serial: sh-sci: FIFO sizing helper consolidation.

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 <lethal@linux-sh.org>

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serial: sh-sci: Abstract register maps.

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 d

serial: sh-sci: Abstract register maps.

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 <lethal@linux-sh.org>

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serial: sh-sci: Consolidate RXD pin handling.

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 th

serial: sh-sci: Consolidate RXD pin handling.

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 <lethal@linux-sh.org>

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serial: sh-sci: Generalize overrun handling.

This consolidates all of the broken out overrun handling and ensures that
we have sensible defaults per-port type, in addition to making sure

serial: sh-sci: Generalize overrun handling.

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 <lethal@linux-sh.org>

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

h8300 has never been updated upstream to support the conversion to the
driver model (which happened mid-2.5), and it doesn't seem likel

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

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 <lethal@linux-sh.org>

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Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
sh: I

Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (23 commits)
sh: Ignore R_SH_NONE module relocations.
SH: SE7751: Fix pcibios_map_platform_irq prototype.
sh: remove warning and warning_symbol from struct stacktrace_ops
sh: wire up sys_sendmmsg.
clocksource: sh_tmu: Runtime PM support
clocksource: sh_tmu: __clocksource_updatefreq_hz() update
clocksource: sh_cmt: Runtime PM support
clocksource: sh_cmt: __clocksource_updatefreq_hz() update
dmaengine: shdma: synchronize RCU before freeing, simplify spinlock
dmaengine: shdma: add runtime- and system-level power management
dmaengine: shdma: fix locking
sh: sh-sci: sh7377 and sh73a0 build fixes
sh: cosmetic improvement: use an existing pointer
serial: sh-sci: suspend/resume wakeup support V2
serial: sh-sci: Runtime PM support
sh: select IRQ_FORCED_THREADING.
sh: intc: Set virtual IRQs as nothread.
sh: fixup fpu.o compile order
i2c: add a module alias to the sh-mobile driver
ALSA: add a module alias to the FSI driver
...

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serial: sh-sci: suspend/resume wakeup support V2

This patch adds wakeup support to the sh-sci driver. The serial
core deals with all details but defaults to wakeup disabled. So
to ma

serial: sh-sci: suspend/resume wakeup support V2

This patch adds wakeup support to the sh-sci driver. The serial
core deals with all details but defaults to wakeup disabled. So
to make use of this feature enable wakeup in sysfs:

echo enabled > /sys/class/tty/ttySC0/power/wakeup

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: Runtime PM support

Add support for Runtime PM in the sh-sci driver.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.or

serial: sh-sci: Runtime PM support

Add support for Runtime PM in the sh-sci driver.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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tty: remove invalid location line in file header

remove invalid location line in each file header after location
moved from driver/char to driver/tty

Signed-off-by: Jovi Zhang <

tty: remove invalid location line in file header

remove invalid location line in each file header after location
moved from driver/char to driver/tty

Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:

Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: select ARCH_NO_SYSDEV_OPS.
sh: fix build error in board-sh7757lcr.c
sh: landisk: Remove whitespace
sh: landisk: Remove mv_nr_irqs
sh: sh-sci: Fix double initialization by serial_console_setup
serial: sh-sci: prevent setup of uninitialized serial console
dma: shdma: add checking the DMAOR_AE in sh_dmae_err

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Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

sh: sh-sci: Fix double initialization by serial_console_setup

The driver is initialized in a state with an unknown value by
serial_console_setup. And initialization fails.

This

sh: sh-sci: Fix double initialization by serial_console_setup

The driver is initialized in a state with an unknown value by
serial_console_setup. And initialization fails.

This is caused by the initialization by sci_console_init.
This function does not seem to be necessary for the present sh-sci driver.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: prevent setup of uninitialized serial console

Commit 906b17dc089f7fa87e37a9cfe6ee185efc90e0da introduced a condition
where the kernel will crash unless a earlyprintk para

serial: sh-sci: prevent setup of uninitialized serial console

Commit 906b17dc089f7fa87e37a9cfe6ee185efc90e0da introduced a condition
where the kernel will crash unless a earlyprintk parameter is specified.

Without this parameter, sci_console_init is called during early console
setup without any port being initialized, and the kernel crashes a
little bit later when uart_set_options attemps to invoke set_termios on a
port with an ops member equal to NULL.

This patch just checks in sci_console_init that the port is properly
initialized, and aborts the early console setup if it is not.

Signed-off-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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serial: sh-sci: fix deadlock when resuming from S3 sleep

S3 sleep invokes the shutdown callback of the sh-sci driver, which
suspends the clocks until they are reactivated by a call to st

serial: sh-sci: fix deadlock when resuming from S3 sleep

S3 sleep invokes the shutdown callback of the sh-sci driver, which
suspends the clocks until they are reactivated by a call to startup.
However, before the latter is invoked, sci_set_termios may be called on
the port by uart_resume_port. In such cases it will endlessly wait for
the TEND bit to raise, which will never happen since the clocks are
disabled.

This patch ensures that clocks are enabled when ports registers are
manipulated within sci_set_termios.

Signed-off-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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

Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
tty: update MAIN

Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
tty: update MAINTAINERS file due to driver movement
tty: move drivers/serial/ to drivers/tty/serial/
tty: move hvc drivers to drivers/tty/hvc/

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tty: move drivers/serial/ to drivers/tty/serial/

The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part o

tty: move drivers/serial/ to drivers/tty/serial/

The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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