linux-toradex.git/arch/arm/plat-omap/clock.c, branch v3.2.2

arm: Add export.h to ARM specific files as required.

2011-10-31T23:30:50+00:00

These files all make use of one of the EXPORT_SYMBOL variants
or the THIS_MODULE macro.  So they will need 

Signed-off-by: Paul Gortmaker

Merge branch 'next/devel2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc

2011-07-27T00:42:18+00:00

* 'next/devel2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (47 commits)
  OMAP: Add debugfs node to show the summary of all clocks
  OMAP2+: hwmod: Follow the recommended PRCM module enable sequence
  OMAP2+: clock: allow per-SoC clock init code to prevent clockdomain calls from clock code
  OMAP2+: clockdomain: Add per clkdm lock to prevent concurrent state programming
  OMAP2+: PM: idle clkdms only if already in idle
  OMAP2+: clockdomain: add clkdm_in_hwsup()
  OMAP2+: clockdomain: Add 2 APIs to control clockdomain from hwmod framework
  OMAP: clockdomain: Remove redundant call to pwrdm_wait_transition()
  OMAP4: hwmod: Introduce the module control in hwmod control
  OMAP4: cm: Add two new APIs for modulemode control
  OMAP4: hwmod data: Add modulemode entry in omap_hwmod structure
  OMAP4: hwmod data: Add PRM context register offset
  OMAP4: prm: Remove deprecated functions
  OMAP4: prm: Replace warm reset API with the offset based version
  OMAP4: hwmod: Replace RSTCTRL absolute address with offset macros
  OMAP: hwmod: Wait the idle status to be disabled
  OMAP4: hwmod: Replace CLKCTRL absolute address with offset macros
  OMAP2+: hwmod: Init clkdm field at boot time
  OMAP4: hwmod data: Add clock domain attribute
  OMAP4: clock data: Add missing divider selection for auxclks
  ...

arm: don't create useless copies to pass into debugfs_create_dir()

2011-07-21T00:47:52+00:00

its first argument is const char * and it's really not modified...

Signed-off-by: Al Viro

switch assorted clock drivers to debugfs_remove_recursive()

2011-07-21T00:47:51+00:00

Signed-off-by: Al Viro

OMAP: Add debugfs node to show the summary of all clocks

2011-07-10T11:57:33+00:00

Add a debugfs node called "summary" to /sys/kernel/debug/clock/
that displays a quick summary of all clocks registered in the
"clocks" structure. The format of the output from this node is:

   

This debugfs node was very helpful for taking a quick snapshot of
the linux clock tree for OMAP and ensuring clock frequencies
calculated by the kernel were indeed correct. This patch helped
uncover some bugs in the linux clock tree for OMAP4.

Signed-off-by: Jon Hunter 
Signed-off-by: Paul Walmsley

OMAP: clock: bail out early if arch_clock functions not implemented

2011-03-08T03:19:39+00:00

Bail out before we take the clockfw_lock spinlock if the corresponding
OMAP1 or OMAP2+ clock function is not defined.  The intention is to
reduce and simplify the work that is done inside the spinlock.

Signed-off-by: Paul Walmsley

OMAP2+: clock: autoidle as many clocks as possible if CONFIG_OMAP_RESET_CLOCKS

2011-02-25T23:10:16+00:00

Attempt to enable autoidle for as many clocks as possible in the
OMAP2+-common CONFIG_OMAP_RESET_CLOCKS code.  Currently, this only
enables DPLL autoidle for OMAP3/4 DPLLs; but future patches will
enable autoidle for other clocks and the OMAP2 DPLL/APLLs.

In the long run, we should probably get rid of
CONFIG_OMAP_RESET_CLOCKS, and unconditionally run the code that it
selects.  Otherwise, the state of the clock tree won't match the
hardware state - this could result in clocks being enabled or disabled
unpredictably.

Based on a patch by Rajendra Nayak  that did this in
the pm34xx.c/pm44xx.c code.

Signed-off-by: Paul Walmsley 
Cc: Rajendra Nayak

OMAP: clock: Add allow_idle/deny_idle support in clkops

2011-02-25T23:10:16+00:00

On OMAP various clock nodes (dpll's, mx post dividers, interface clocks)
support hardware level autogating which can be controlled from
software.
Support such functionality by adding two new function pointer
allow_idle and deny_idle in the clkops structure.

These function pointers can be populated for any clock
node which supports hardware level autogating.

Also add 2 new functions (omap_clk_enable_autoidle_all and
omap_clk_disable_autoidle_all) which can be called from
architecture specific PM core code, if hardware level
autogating (for all supported clock nodes) is to be
enabled or disabled.

Signed-off-by: Rajendra Nayak 
[paul@pwsan.com: use spinlock rather than mutex due to race; renamed functions;
 functions now return ints]
Signed-off-by: Paul Walmsley

OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks

2010-10-08T17:40:20+00:00

Reduce the amount of debugging generated by default when unused clocks
are being disabled by the clock code.  The previous code would only
generate debug-level messages, but some people who wished to run
production kernels with debug-level messages enabled reported that the
large number of clock disable messages were slowing boot.  Now to
enable clock-by-clock disable messages, DEBUG needs to be defined in
mach-omap2/clock.c.

Signed-off-by: Paul Walmsley 
Cc: Tuukka Tikkanen 
Cc: Tim Bird

OMAP4 clock: Support clk_set_parent

2010-05-20T18:31:12+00:00

Remove the hack put in place while clock framework was still not in
place for OMAP4.

Signed-off-by: Rajendra Nayak 
Signed-off-by: Paul Walmsley