Commit Graph

18 Commits

Author SHA1 Message Date
Magnus Damm eda2030a5b sh: extend clock struct with mapped_reg member
Add a "mapped_reg" member to struct clk and use that
to keep the ioremapped register based on enable_reg.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09 18:01:05 +09:00
Paul Mundt 79e7066415 sh: clkfwk: Kill off remaining debugfs cruft.
Now that all of the named string association with clocks has been
migrated to clkdev lookups there's no meaningful named topology that can
be constructed for a debugfs tree view. Get rid of the left over bits,
and shrink struct clk a bit in the process.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-11 16:11:41 +09:00
Kuninori Morimoto dd2c0ca1b1 sh: clkfwk: add clk_rate_mult_range_round()
This provides a clk_rate_mult_range_round() helper for use by some of the
CPG PLL ranged multipliers, following the same approach as used by the
div ranges.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-05 00:49:27 +09:00
Linus Torvalds e10b87d2b5 Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x
* 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x: (39 commits)
  SH: static should be at beginning of declaration
  sh: move CLKDEV_xxx_ID macro to sh_clk.h
  sh: clock-shx3: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7786: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7785: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7757: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7366: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7343: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7722: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7724: add CLKDEV_ICK_ID for cleanup
  sh: clock-sh7366: modify I2C clock settings
  sh: clock-sh7343: modify I2C clock settings
  sh: clock-sh7723: modify I2C clock settings
  sh: clock-sh7722: modify I2C clock settings
  sh: clock-sh7724: modify I2C clock settings
  serial: sh-sci: Fix up pretty name printing for port IRQs.
  serial: sh-sci: Kill off per-port enable/disable callbacks.
  serial: sh-sci: Add missing module description/author bits.
  serial: sh-sci: Regtype probing doesn't need to be fatal.
  sh: Tidy up pre-clkdev clk_get() error handling.
  ...
2011-08-01 06:10:16 -10:00
Al Viro 12520c438f switch assorted clock drivers to debugfs_remove_recursive()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20 20:47:51 -04:00
Paul Mundt 225ca45c3c sh: clkfwk: Convert to IS_ERR_OR_NULL.
Trivial cleanup.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-24 17:35:40 +09:00
Magnus Damm 794d78fea5 drivers: sh: late disabling of clocks V2
This V2 patch changes the clock disabling behavior during boot.
Two different changes are made:

1) Delay disabling of clocks until late in the boot process.
   This fixes an existing issue where in-use clocks without
   software reference are disabled by mistake during boot.
   One example of this is the handling of the Mackerel serial
   console output that shares clock with the I2C controller.

2) Write out the "disabled" state to the hardware for clocks
   that not have been used by the kernel. In other words,
   make sure so far unused clocks actually get turned off.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-24 16:27:07 +09:00
Magnus Damm 583af252ab drivers: sh: resume enabled clocks fix
Extend the SH / SH-Mobile ARM clock framework to only
resume clocks that have been enabled.

Without this fix divide-by-zero is triggering on sh7372
FSIDIV during system wide resume of Suspend-to-RAM.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-06-14 15:15:25 +09:00
Rafael J. Wysocki a696b89c58 sh: Use struct syscore_ops instead of sysdevs
Convert the SuperH clocks framework and shared interrupt handling
code to using struct syscore_ops instead of a sysdev classes and
sysdevs for power managment.

This reduces the code size significantly and simplifies it.  The
optimizations causing things not to be restored after creating a
hibernation image are removed, but they might lead to undesirable
effects during resume from hibernation (e.g. the clocks would be left
as the boot kernel set them, which might be not the same way as the
hibernated kernel had seen them before the hibernation).

This also is necessary for removing sysdevs from the kernel entirely
in the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-03-23 18:57:37 +09:00
Alexey Dobriyan 57cc7215b7 headers: kobject.h redux
Remove kobject.h from files which don't need it, notably,
sched.h and fs.h.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-10 08:51:44 -08:00
Paul Mundt f278ea849e sh: clkfwk: Build fix for non-legacy CPG changes.
The disabling of the init op for non-legacy clocks neglected to do the
same in the core clock framework, resulting in a build failure. Fix it
up.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-19 16:40:35 +09:00
Paul Mundt 35a96c739f sh: clkfwk: Kill off now unused algo_id in set_rate op.
Now that clk_set_rate_ex() is gone, there is also no way to get at rate
setting algo id, which is now also completely unused. Kill it off before
new clock ops start using it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-15 18:25:17 +09:00
Paul Mundt 9a1683d1dd sh: clkfwk: Kill off unused clk_set_rate_ex().
With the refactoring of the SH7722 clock framework some time ago this
abstraction has become unecessary. Kill it off before anyone else gets
the bright idea to start using it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-15 18:25:12 +09:00
Paul Mundt ed10b490ea sh: clkfwk: fix up compiler warnings.
CC      drivers/sh/clk/core.o
drivers/sh/clk/core.c: In function 'clk_round_parent':
drivers/sh/clk/core.c:574: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'unsigned int'
drivers/sh/clk/core.c:594: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'unsigned int'

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-10 18:02:25 +09:00
Paul Mundt a766b29790 sh: clkfwk: Fix up checkpatch warnings.
The clk_round_parent() change introduced various checkpatch warnings,
tidy them up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-08 09:40:23 +09:00
Guennadi Liakhovetski 6af26c6c99 sh: add clk_round_parent() to optimize parent clock rate
Sometimes it is possible and reasonable to adjust the parent clock rate to
improve precision of the child clock, e.g., if the child clock has no siblings.
clk_round_parent() is a new addition to the SH clock-framework API, that
implements such an optimization for child clocks with divisors, taking all
integer values in a range.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-08 09:35:26 +09:00
Paul Mundt 5aefa34fad sh: clkfwk: Fix up rate rounding error handling.
According to the linux/clk.h definition we should be handing back an
errno value or a valid rate. This fixes up the case where 0 can be
returned for invalid frequencies or cases where rounding has no
selectable candidate.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-11-01 15:30:31 -04:00
Paul Mundt de9186c257 sh: clkfwk: Shuffle around to match the intc split up.
This shuffles the clock framework code around to a drivers/sh/clk subdir,
to follow the intc split up. This will make it easier to subsequently
break things out as well as plug in different helpers for non-CPG users.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-18 21:32:58 +09:00