The only user for this is the SH-Mobile r_clk, which is now added as a
root clock and can be kicked via propagate_rate() as usual. Given that,
there is no longer any need for the special clk_recalc_rate(), so we kill
it off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This tidies up the set_rate hack that the on-chip clocks were abusing to
trigger rate propagation, which is now handled generically.
Additionally, now that CLK_ENABLE_ON_INIT is wired up where it needs to
be for these clocks, the clk_enable() can go away. In some cases this was
bumping up the refcount higher than it should have been.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This causes the generic clk_set_parent() implementation to be a bit more
intelligent. A clk_reparent() is added to move the clock over to the new
parent's sibling list, which then allows the generic rate propagation
code to succeed. This also becomes a nop if the new and old parents are
unchanged.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There are a couple of instances where a clk_enable() can fail, which the
SH-Mobile code presently handles, but doesn't get reported all the way
back up. This fixes up the return type so the errors make it all the way
down to the drivers.
Additionally, we now also error out properly if the parent enable fails.
Prep work for aggressively turning off unused clocks on boot.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
There is no real distinction here in behaviour, either a clock needs to
be enabled on initialiation or not. The ALWAYS_ENABLED flag was always
intended to only apply to clocks that were physically always on and could
simply not be disabled at all from software. Unfortunately over time this
was abused and the meaning became a bit blurry.
So, we kill off both of all of those paths now, as well as the newer
NEEDS_INIT flag, and consolidate on a CLK_ENABLE_ON_INIT. Clocks that
need to be enabled on initialization can set this, and it will purposely
enable them and bump the refcount up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This resyncs the rate propagation strategy with the scheme used by the
OMAP clock framework. Child clocks are tracked on a list under each
parent and propagation happens there specifically rather than constantly
iterating over the global clock list.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds a followparent_recalc() helper for clocks that just follow the
parent's rate. Switch over the few CPUs that use this scheme for some of
their clocks.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh7780. Both clockevent
and clocksource support is enabled.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Update intc tables and platform data to use one linux irq
per maskable interrupt source instead of keeping the one-to-one
mapping between vectors and linux irqs.
This fixes potential irq masking issues for sh7760 hardware
blocks such as DMAC/TMU2/REF.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh7760. Both clockevent
and clocksource support is enabled.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh775x. Both clockevent
and clocksource support is enabled.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Include empty_zero_page in _text. This fixes a problem
introduced by c3e2586b79
which results in broken boot on R2D-Plus.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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>
Tie this in to the Makefile directly, where we already know what we are
running on. This tidies up the linker script a bit, and is prep work for
unifying the arch/sh/boot/compressed linker scripts.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds all of the requisite bits from vmlinux_64.lds.S in to the _32
variant, resulting in a unified and generic linker script that can be
shared across both.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This fixes up the LSB setting for SHmedia branching in updated symbols
when processing module relocations.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Newer code paths that are heavier in 64-bit math manage to get this
generated by newer compilers, provide a definition and export
accordingly. This is trivially wrapped around the existing __sdivsi3
code.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This adds the clock specifier to all of the SH-Mobile sh-sci ports.
Impacted CPUs are SH7343/SH7366/SH7722/SH7723/SH7724.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Now that everyone is using the clock framework directly and we
unconditionally provide our own calibrate_delay() function, having it
wrapped in an ifndef is no longer useful. So, kill it off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh64 has traditionally had this configurable via a Kconfig option
(CONFIG_SH64_USER_MISALIGNED_FIXUP). In practice it has never really been
terribly useful to turn this off, so just get rid of the option entirely.
We leave the sysctl around so we don't end up breaking existing root
file systems, and to allow folks that really want this off to do so at
their own risk.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Several of these options are specific to the SHcompact ISA and will need
to be rewritten for SHmedia if they are to be supported at all. Drop
the impossible rules for now.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh7723. Both clockevent
and clocksource support is enabled. While at it, adjust the
CMT clocksource rating to prioritize the TMU.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch enables the TMU clocksource on sh7722.
To prioritize TMU over CMT we also adjust the CMT
clock source rating.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch updates the clock framework use count code.
With this patch the enable() and disable() callbacks
only get called when counting from and to zero.
While at it the kref stuff gets replaced with an int.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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>
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>
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>
This adds sh_tmu support to the SH-5 subtypes, which subsequently allows
us to kill off time_64.c and use the now generic time_32.c. As a bonus,
SH-5 now supports highres timers and tickless for the first time.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Now that the onchip_remap() mess is sorted out, the rtc-sh support code
for SH-5 can follow the same approach as the other CPUs.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh7785. Both clockevent
and clocksource support is enabled.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Make sure that clk->ops->init() only gets called once in
the case of CLK_ALWAYS_ENABLED. Without this patch the
init() callback may be called multiple times.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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>
The old arch/sh/kernel/timers/ directly will be going away completely
once the rest of the TMU users are migrated, so move the dummy broadcast
driver up a level in preparation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Now that the stragglers (MTU2/CMT/etc.) have been rewritten and we are
selecting both GENERIC_TIME and GENERIC_CLOCKEVENTS, the get_offset()
timer op is completely unused. As a result, we are now able to kill off
the ARCH_USES_GETTIMEOFFSET references.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
All of the SH timers use a roughly identical structure for platform data,
which presently is broken out for each block. Consolidate all of these
definitions, as there is no reason for them to be broken out in the first
place.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds TMU platform data for sh7722. Only clockevent
mode is enabled for now, clocksource requires this patch:
"clocksource: setup mult_orig in clocksource_enable()"
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
