sh: add the sh_ prefix to early platform symbols

Old early platform device support is now sh-specific. Before moving on
to implementing new early platform framework based on real platform
devices, p

sh: add the sh_ prefix to early platform symbols

Old early platform device support is now sh-specific. Before moving on
to implementing new early platform framework based on real platform
devices, prefix all early platform symbols with 'sh_'.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Rich Felker <dalias@libc.org>
Link: https://lore.kernel.org/r/20191003092913.10731-3-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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drivers: move the early platform device support to arch/sh

SuperH is the only user of the current implementation of early platform
device support. We want to introduce a more robust approach to earl

drivers: move the early platform device support to arch/sh

SuperH is the only user of the current implementation of early platform
device support. We want to introduce a more robust approach to early
probing. As the first step - move all the current early platform code
to arch/sh.

In order not to export internal drivers/base functions to arch code for
this temporary solution - copy the two needed routines for driver
matching from drivers/base/platform.c to arch/sh/drivers/platform_early.c.

Also: call early_platform_cleanup() from subsys_initcall() so that it's
called after all early devices are probed.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Rich Felker <dalias@libc.org>
Link: https://lore.kernel.org/r/20191003092913.10731-2-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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sh: kernel: convert to SPDX identifiers

Update license to use SPDX-License-Identifier instead of verbose license
text.

Link: http://lkml.kernel.org/r/8736rccswn.wl-kuninori.morimoto.gx@renesas.com

sh: kernel: convert to SPDX identifiers

Update license to use SPDX-License-Identifier instead of verbose license
text.

Link: http://lkml.kernel.org/r/8736rccswn.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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sh: remove board_time_init() callback

The only remaining user of board_time_init() is the of-generic
machine, and that just calls the global timer_init() function.
Calling that one has no effect on

sh: remove board_time_init() callback

The only remaining user of board_time_init() is the of-generic
machine, and that just calls the global timer_init() function.
Calling that one has no effect on non-DT platforms, so we can
simply call it unconditionally in place of board_time_init().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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sh: remove unused rtc_sh_get/set_time infrastructure

All platforms are now converted to RTC drivers, so this has become
obsolete. The board_time_init() callback still has one caller, but
could other

sh: remove unused rtc_sh_get/set_time infrastructure

All platforms are now converted to RTC drivers, so this has become
obsolete. The board_time_init() callback still has one caller, but
could otherwise also get killed.

This removes one more usage of the deprecated timespec structure,
which overflows in y2038.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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sh: make time.c explicitly non-modular

The Makefile currently controlling compilation of this code is:

obj-y := debugtraps.o dma-nommu.o dumpstack.o \
[...]
syscalls_$(

sh: make time.c explicitly non-modular

The Makefile currently controlling compilation of this code is:

obj-y := debugtraps.o dma-nommu.o dumpstack.o \
[...]
syscalls_$(BITS).o time.o topology.o traps.o \
traps_$(BITS).o unwinder.o

....meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular code, so that when reading
the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rich Felker <dalias@libc.org>

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rtc: sh: provide rtc_class_ops directly

The rtc-generic driver provides an architecture specific
wrapper on top of the generic rtc_class_ops abstraction,
and on sh, that goes through another indirec

rtc: sh: provide rtc_class_ops directly

The rtc-generic driver provides an architecture specific
wrapper on top of the generic rtc_class_ops abstraction,
and on sh, that goes through another indirection using
the rtc_sh_get_time/rtc_sh_set_time functions.

This changes the sh rtc-generic device to provide its
rtc_class_ops directly, skipping one of the abstraction
levels.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rich Felker <dalias@libc.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

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arch/sh/kernel/time.c: use PTR_ERR_OR_ZERO

Replace IS_ERR/PTR_ERR.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Tor

arch/sh/kernel/time.c: use PTR_ERR_OR_ZERO

Replace IS_ERR/PTR_ERR.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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sh: hwblk: Kill off remaining bits of hwblk API.

Now that everything has been migrated, kill off the remaining
infrastructure bits.

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

sh: Convert sh to use read/update_persistent_clock

This patch converts the sh architecture to use the generic
read_persistent_clock and update_persistent_clock interfaces, reducing
the amount of arc

sh: Convert sh to use read/update_persistent_clock

This patch converts the sh architecture to use the generic
read_persistent_clock and update_persistent_clock interfaces, reducing
the amount of arch specific code we have to maintain, and allowing for
further cleanups in the future.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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timekeeping: Fix up read_persistent_clock() breakage on sh

The recent commit "timekeeping: Increase granularity of
read_persistent_clock()" introduced read_persistent_clock()
rework which inadverten

timekeeping: Fix up read_persistent_clock() breakage on sh

The recent commit "timekeeping: Increase granularity of
read_persistent_clock()" introduced read_persistent_clock()
rework which inadvertently broke the sh conversion:

arch/sh/kernel/time.c:45: error: passing argument 1 of 'rtc_sh_get_time' from incompatible pointer type
distcc[13470] ERROR: compile arch/sh/kernel/time.c on sprygo/32 failed
make[2]: *** [arch/sh/kernel/time.o] Error 1

This trivial fix gets it working again.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20090824223239.GB20832@linux-sh.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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sh: Fix up clockevents broadcasting.

This fixes up the clockevents broadcasting code as detailed in commit
ee348d5a1d810bc9958cabb7c27302aab235d36e ("[ARM] realview: fix broadcast
tick support"). Th

sh: Fix up clockevents broadcasting.

This fixes up the clockevents broadcasting code as detailed in commit
ee348d5a1d810bc9958cabb7c27302aab235d36e ("[ARM] realview: fix broadcast
tick support"). This saves us from having to do strange ordering things
with the broadcast clockevent device, relying on the rating instead.

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

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timekeeping: Increase granularity of read_persistent_clock()

The persistent clock of some architectures (e.g. s390) have a
better granularity than seconds. To reduce the delta between the
host clock

timekeeping: Increase granularity of read_persistent_clock()

The persistent clock of some architectures (e.g. s390) have a
better granularity than seconds. To reduce the delta between the
host clock and the guest clock in a virtualized system change the
read_persistent_clock function to return a struct timespec.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Daniel Walker <dwalker@fifo99.com>
LKML-Reference: <20090814134811.013873340@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Revert "sh: Bump the earlytimer bits back to time_init()."

This reverts commit 1d29ebebcb951ab6b04d22807cafb24b893310a2.

Bumping up the earlytimer initialization causes IRQs to be enabled too
early

Revert "sh: Bump the earlytimer bits back to time_init()."

This reverts commit 1d29ebebcb951ab6b04d22807cafb24b893310a2.

Bumping up the earlytimer initialization causes IRQs to be enabled too
early, which blows up lockdep:

...
NR_IRQS:256 nr_irqs:256
------------[ cut here ]------------
Badness at kernel/lockdep.c:2128

Pid : 0, Comm: swapper
CPU : 0 Not tainted (2.6.31-rc3-00205-g3ed6e12-dirty #2443)

PC is at trace_hardirqs_on_caller+0x48/0x10c
PR is at trace_hardirqs_on_caller+0x3c/0x10c
...

Revert it back to late_time_init time, which fixes up lockdep.

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

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sh: hwblk base implementation

This patch is the hwblk base implementation, containing
structures and shared functions dealing with hardware blocks.

A each processor model should provide a list of h

sh: hwblk base implementation

This patch is the hwblk base implementation, containing
structures and shared functions dealing with hardware blocks.

A each processor model should provide a list of hwblks and
describe which module stop bit that is associated with each
hwblck and how the hwblks are grouped together into areas.

The shared code keeps track of the usage count for each
hwblk and the areas. Fallback implementations for processor
specific code are also kept as weak symbols.

The clock framework, the runtime pm code and cpuidle will
all tie into this hwblk implementation.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

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sh: Bump the earlytimer probe devices up.

Presently the earlytimer probe handles the clockevents driver, which
requires that the clockevents driver be registered first. This bumps it
up by 1 to incl

sh: Bump the earlytimer probe devices up.

Presently the earlytimer probe handles the clockevents driver, which
requires that the clockevents driver be registered first. This bumps it
up by 1 to include the clocksource device, which can be safely ignored
if it doesn't exist, as we will simply error out on that path and defer
to the jiffies clocksource.

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

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sh: Use generic sched_clock().

The generic sched_clock() handles INITIAL_JIFFIES now as well, so we can
just use that instead.

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

sh: Bump the earlytimer bits back to time_init().

These were handled through late_time_init due to kmalloc() and friends
not being available earlier on previously. Now with slab caches being
availab

sh: Bump the earlytimer bits back to time_init().

These were handled through late_time_init due to kmalloc() and friends
not being available earlier on previously. Now with slab caches being
available much earlier, this is no longer necessary, and we can move the
initialization up to an earlier point. One of the benefits with this is
that printk times are available a bit earlier!

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

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sh: Kill off the remnants of the old timer code.

Now with all of the TMU users moved over to the new TMU driver, and the
old TMU driver killed off, the left-over infrastructure can go along
with it.

sh: Kill off the remnants of the old timer code.

Now with all of the TMU users moved over to the new TMU driver, and the
old TMU driver killed off, the left-over infrastructure can go along
with it.

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

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sh: Account for INITIAL_JIFFIES when using jiffies clocksource.

In the case where we fall back on the generic jiffies clocksource,
INITIAL_JIFFIES needs to be accounted for so that printk times aren

sh: Account for INITIAL_JIFFIES when using jiffies clocksource.

In the case where we fall back on the generic jiffies clocksource,
INITIAL_JIFFIES needs to be accounted for so that printk times aren't
completely skewed.

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

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sh: Kill off the global rtc_lock with extreme prejudice.

Now that all of the possible users for rtc_lock have gone away, it is no
longer necessary to keep this lock definition around.

This follows

sh: Kill off the global rtc_lock with extreme prejudice.

Now that all of the possible users for rtc_lock have gone away, it is no
longer necessary to keep this lock definition around.

This follows several other architectures that have either recently
dropped it or never supported it in the first place.

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

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sh: Kill off dead timer sysclass pm hooks.

With the conversion to generic clockevents these are completely unused,
so just kill it off.

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

sh: Kill off dead handle_timer_tick() code.

Nothing is using this anymore now that we have fully converted to generic
time, so kill it off completely.

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

sh: Wire up GENERIC_CMOS_UPDATE for the platforms that need it.

Now that everything has converted over to generic timekeeping, we need an
alternate method for keeping the RTC updated for those platf

sh: Wire up GENERIC_CMOS_UPDATE for the platforms that need it.

Now that everything has converted over to generic timekeeping, we need an
alternate method for keeping the RTC updated for those platforms that are
still using the rtc_sh_get/set_time pairs, presently limited to SH-03 and
the Dreamcast. This wires up the GENERIC_CMOS_UPDATE hooks for those to
maintain the same behaviour.

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

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sh: Rename arch/sh/kernel/time_32.c to arch/sh/kernel/time.c.

This is now fully generic, and used both by _32 and _64 variants.
Rename it accordingly.

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