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 the r7780 highlander defconfig to fix
PCLK value, while at it fix cmdline on r7785.
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>
This fixes up the broken I2C offset in 32-bit mode.
The cause is because the board datasheet had a mistake.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
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>
There is nothing in these routines that inherently depends on R0 use.
Given that these routines are inlined, it is rather easy to blow up the
compiler by exhausting the spill class when performing a 64-bit swab.
This presently manifests itself as the following:
CC fs/ocfs2/suballoc.o
fs/ocfs2/suballoc.c: In function 'ocfs2_reserve_suballoc_bits':
fs/ocfs2/suballoc.c:638: error: unrecognizable insn:
(insn 2793 1230 1231 103 arch/sh/include/asm/swab.h:33 (set (reg:HI 853)
(subreg:HI (reg:SI 149 macl) 2)) -1 (expr_list:REG_DEAD (reg:SI 149 macl)
(nil)))
fs/ocfs2/suballoc.c:638: internal compiler error: in extract_insn, at recog.c:1991
This patch switches over to using an arbitrarily assigned register instead.
While the same issue does not exist in the SH-5 case, there is likewise no harm
in having an alternate register used for the byterev/shari pair.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This implements a simple case that just iterates through the common
cases, looking at UTS_MACHINE for hints.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Consolidate these in a single place in the Kconfig menus. At the same
time, disable their interactivity and set them according to the board
config defaults.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This introduces a BITS export that can handily be picked up by Makefiles
for cleaner sharing. Reflect its use in arch/sh/boot/compressed/ in
preparation for unifying the Makefiles.
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>
These are presently only defined for sh32, use the plain unoptimized
versions for sh64. Fixes up smsc911x build.
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>
There is no real reason to use this anymore, as the build system
generally knows what it is doing with regards to cflags mangling.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The RTC_LIB helpers are used in arch/sh/kernel/time.c, which was
previously only the case for the 32-bit variant. Now that this has
become the common implementation, move the RTC_LIB select to reflect
that. Fixes up the sh64 build.
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>
This moves out the cayman-specific panic handler code to a better
location, and leaves the generic implementation a simple stub that is
still used under emulation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
None of the print_page() code and associated helpers are presently used
by anything in-tree, so just kill it off.
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>
This converts the sh03 rtc code off of using the global rtc_lock and on
to its own spinlock. There are no other possible users of the rtc_lock,
so serializing with it is not necessary.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
