Commit Graph

38 Commits

Author SHA1 Message Date
Tony Lindgren 48cb1258e8 Merge branch 'for_3.1/pm-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-cleanup
Conflicts:
	arch/arm/mach-omap2/pm-debug.c
	arch/arm/mach-omap2/pm.h
2011-06-29 04:45:16 -07:00
Sanjeev Premi ec3cdb5bae OMAP2+: PM: fix section mismatch in pm_dbg_init()
Fix the section mismatch warning:

  WARNING: vmlinux.o(.text+0x21118): Section mismatch
  in reference from the function pm_dbg_init() to the
  function .init.text:pwrdms_setup()
  The function pm_dbg_init() references
  the function __init pwrdms_setup().
  This is often because pm_dbg_init lacks a __init
  annotation or the annotation of pwrdms_setup is wrong.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-27 09:53:14 -07:00
Kevin Hilman 59bec58373 OMAP3: PM debug: remove register dumping
Remove OMAP3-specific register dumping feature from PM debug layer.
This is removed because:

- it's ugly
- it's OMAP3-specific, and will obviously not scale to OMAP4+
- userspace /dev/mem-based tools (like omapconf) can do this much better

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-27 09:53:09 -07:00
Kevin Hilman 20d5d55149 OMAP2: PM debug: remove register dumping
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20 14:12:32 -07:00
Kevin Hilman 3a7b7bdd24 OMAP3: PM debug: remove sleep_while_idle feature
Remove the OMAP-specific PM debug 'sleep_while_idle' feature which is
currently available as an OMAP-specific debugfs entry.

This duplicates existing ARM-generic functionality available as a
boot-time option using the boot cmdline option 'hohlt'.

If runtime configuration of this is needed, then adding a debugfs
entry for the ARM-generic hlt/nohlt interface should be added.

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-20 14:12:32 -07:00
Tony Lindgren 98e182a26b omap2+: Remove gptimer_wakeup for now
This removes the support for setting the wake-up timer for debugging.

Later on we can reserve gptimer1 for PM code only and have similar
functionality.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-06-20 01:25:39 -07:00
Russell King c8fb13d04a OMAP: PM debug: fix section mismatch warnings
WARNING: arch/arm/mach-omap2/built-in.o(.text+0x423c): Section mismatch in reference from the function pm_dbg_regset_init() to the function .init.text:pm_dbg_init()
The function pm_dbg_regset_init() references
the function __init pm_dbg_init().
This is often because pm_dbg_regset_init lacks a __init
annotation or the annotation of pm_dbg_init is wrong.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-06 16:14:46 -07:00
Vasiliy Kulikov f9fbe47cc1 mach-omap2: pm: world-writable debugfs timer files
Don't allow all users to change timer settings.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-04 12:08:12 -08:00
Kevin Hilman 6081dc348f OMAP: PM noop: implement context loss count for non-omap_devices
For devices which have not (yet) been converted to use omap_device,
implement the context loss counter using the "brutal method" as
originally proposed by Paul Walmsley[1].

The dummy context loss counter is incremented every time it is
checked, but only when off-mode is enabled.  When off-mode is
disabled, the dummy counter stops incrementing.

Tested on 36xx/Zoom3 using MMC driver, which is currently the
only in-tree user of this API.

This patch should be reverted after all devices are converted to using
omap_device.

[1] http://marc.info/?l=linux-omap&m=129176260000626&w=2

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
[paul@pwsan.com: fixed compile warning; fixed to compile on OMAP1]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-12-21 21:31:55 -07:00
Paul Walmsley 72e06d0872 OMAP2+: powerdomain: move header file from plat-omap to mach-omap2
The OMAP powerdomain code and data is all OMAP2+-specific.  This seems
unlikely to change any time soon.  Move plat-omap/include/plat/powerdomain.h
to mach-omap2/powerdomain.h.  The primary point of doing this is to remove
the temptation for unrelated upper-layer code to access powerdomain code
and data directly.

As part of this process, remove the references to powerdomain data
from the GPIO "driver" and the OMAP PM no-op layer, both in plat-omap.
Change the DSPBridge code to point to the new location for the
powerdomain headers.  The DSPBridge code should not be including the
powerdomain headers; these should be removed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
2010-12-21 21:05:16 -07:00
Paul Walmsley 1540f21406 OMAP2+: clockdomain: move header file from plat-omap to mach-omap2
The OMAP clockdomain code and data is all OMAP2+-specific.  This seems
unlikely to change any time soon.  Move plat-omap/include/plat/clockdomain.h
to mach-omap2/clockdomain.h.  The primary point of doing this is to remove
the temptation for unrelated upper-layer code to access clockdomain code
and data directly.

DSPBridge also uses the clockdomain headers for some reason, so,
modify it also. The DSPBridge code should not be including the
clockdomain headers; these should be removed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2010-12-21 21:05:15 -07:00
Paul Walmsley c4d7e58fb5 OMAP2/3: PRM/CM: prefix OMAP2 PRM/CM functions with "omap2_"
Now that OMAP4-specific PRCM functions have been added, distinguish the
existing OMAP2/3-specific PRCM functions by prefixing them with "omap2_".

This patch should not result in any functional change.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
2010-12-21 21:05:14 -07:00
Paul Walmsley 59fb659b06 OMAP2/3: PRCM: split OMAP2/3-specific PRCM code into OMAP2/3-specific files
In preparation for adding OMAP4-specific PRCM accessor/mutator
functions, split the existing OMAP2/3 PRCM code into OMAP2/3-specific
files.  Most of what was in mach-omap2/{cm,prm}.{c,h} has now been
moved into mach-omap2/{cm,prm}2xxx_3xxx.{c,h}, since it was
OMAP2xxx/3xxx-specific.

This process also requires the #includes in each of these files to be
changed to reference the new file name.  As part of doing so, add some
comments into plat-omap/sram.c and plat-omap/mcbsp.c, which use
"sideways includes", to indicate that these users of the PRM/CM includes
should not be doing so.

Thanks to Felipe Contreras <felipe.contreras@gmail.com> for comments on this
patch.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Acked-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2010-12-21 20:01:55 -07:00
Kevin Hilman 9f5ead76d4 omap: PM debug: fix wake-on-timer debugfs dependency
Wakeup-on-timer code does not have/need debugfs dependency.  Move
the function out of debugfs ifdef.

Fixes compile error when CONFIG_DEBUG_FS is disabled but PM debug is
enabled.

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-12-02 17:08:48 -08:00
Manjunath Kondaiah G 3881573397 OMAP: mach-omap2: Fix static declaration warnings
This patch fixes sparse warnings due to non declaration of
static structures and variables.

Sparse warning logs fixed:
arch/arm/mach-omap2/control.c:88:6: warning: symbol 'omap3_secure_ram_storage' was not declared. Should it be static?
n
arch/arm/mach-omap2/timer-gp.c:50:22: warning: symbol 'gptimer_wakeup' was not declared. Should it be static?
arch/arm/mach-omap2/timer-gp.c:240:18: warning: symbol 'omap_timer' was not declared. Should it be static?
arch/arm/mach-omap2/prcm.c:121:24: warning: symbol 'prcm_context' was not declared. Should it be static?
arch/arm/mach-omap2/mux2420.c:510:29: warning: symbol 'omap2420_pop_ball' was not declared. Should it be static?
arch/arm/mach-omap2/mux2430.c:589:29: warning: symbol 'omap2430_pop_ball' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:934:28: warning: symbol 'omap3_cus_subset' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:1080:29: warning: symbol 'omap3_cus_ball' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:1272:28: warning: symbol 'omap3_cbb_subset' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:1393:29: warning: symbol 'omap3_cbb_ball' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:1603:28: warning: symbol 'omap36xx_cbp_subset' was not declared. Should it be static?
arch/arm/mach-omap2/mux34xx.c:1821:29: warning: symbol 'omap36xx_cbp_ball' was not declared. Should it be static?
arch/arm/mach-omap2/pm-debug.c:165:15: warning: symbol 'pm_dbg_dir' was not declared. Should it be static?
arch/arm/mach-omap2/board-omap3evm.c:587:30: warning: symbol 'ads7846_config' was not declared. Should it be static?
arch/arm/mach-omap2/board-omap3evm.c:606:23: warning: symbol 'omap3evm_spi_board_info' was not declared. Should it be static?
arch/arm/mach-omap2/board-rx51-sdram.c:46:25: warning: symbol 'rx51_sdrc_params' was not declared. Should it be static?
arch/arm/mach-omap2/board-rx51-sdram.c:211:25: warning: symbol 'rx51_get_sdram_timings' was not declared. Should it be static?
arch/arm/mach-omap2/board-omap3touchbook.c:64:15: warning: symbol 'touchbook_revision' was not declared. Should it be static?
arch/arm/mach-omap2/board-am3517evm.c:350:24: warning: symbol 'am3517_evm_dss_device' was not declared. Should it be static?
arch/arm/mach-omap2/board-omap3stalker.c:567:23: warning: symbol 'omap3stalker_spi_board_info' was not declared. Should it be static?

Signed-off-by: Manjunath Kondaiah G <manjugk@ti.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-10-08 09:57:40 -07:00
Santosh Shilimkar 315e2556f6 omap: pm-debug: Enable wakeup_timer_milliseconds debugfs entry
Commit 8e2efde9 added milliseconds suspend wakeup time support but
same interface is not exported through debugfs

This patch enables the debugfs hook for wakeup_timer_milliseconds

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-09-23 17:14:10 -07:00
Santosh Shilimkar 86b0c1e3c0 omap: pm-debug: Move common debug code to pm-debug.c
This patch moves omap2_pm_wakeup_on_timer() and pm debug entries
form pm34xx.c to pm-debug.c and export it, so that it is available
to other OMAPs

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-09-23 17:14:09 -07:00
Thara Gopinath 6cdee91257 OMAP: PM debugfs removing OMAP3 hardcodings.
This patch removes omap3 hardcodings from pm-debug.c
so that enabling PM debugfs support does break compilation
for other OMAP's. This is a preparatory patch for supporting
OMAP4 pm entries through PM debugfs.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-09-21 11:46:18 -07:00
Ari Kauppi 8e2efde9f1 OMAP3: PM: Add milliseconds interface to suspend wakeup timer
Millisecond resolution is possible and there are use cases for it
(automatic testing).

Seconds-based interface is preserved for compatibility.

Signed-off-by: Ari Kauppi <Ext-Ari.Kauppi@nokia.com>
Reviewed-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12 09:39:00 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Thara Gopinath cde08f81b1 OMAP3 PM: Adding counters for power domain logic off and mem off during retention.
This patch adds counters to keep track of whether the powerdomain
logic or software controllable memory banks are turned off when
the power domain enters retention. During power domain retention
if logic gets turned off, the scenario is known as Open Switch Retention.
Also during retention s/w controllable memory banks of a power
domain can be chosen to be kept in retention or off.

This patch adds one counter per powerdomain to track the power domain
logic state during retention. Number of memory bank state counters
added depends on the number of software controllable memory banks
of the powerdomain. To view these counters do
	cat ../debug/pm_debug/count

Signed-off-by: Thara Gopinath <thara@ti.com>
[paul@pwsan.com: conditional expressions simplified; counter increment
 code moved to its own function]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-02-24 12:05:50 -07:00
Paul Walmsley e909d62a8a OMAP clockdomain/powerdomain: remove runtime register/unregister
OMAP clockdomains and powerdomains are currently defined statically,
only registered at boot, and never unregistered, so we can remove the
unregister function and the locking.   A variant of this was originally
suggested a while ago by Dmitry Baryshkov <dbaryshkov@gmail.com>.
This version of this patch contains an additional fix from Kevin Hilman
<khilman@deeprootsystems.com> to address one of the pwrdm_for_each_nolock()
users in mach-omap2/pm-debug.c.   Thanks Kevin.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
2010-01-26 20:13:00 -07:00
Abhijit Pagare 84c0c39aec ARM: OMAP4: PM: Make OMAP3 Clock-domain framework compatible for OMAP4.
Here the ".clkstctrl_reg" field is added to the clockdomain stucture
as the module offsets for OMAP4 do not map one to one for powerdomains
and clockdomains as it used to for OMAP3. Hence we need to use absolute
addresses to access the control registers. Some of the clock domains have
modules falling in the address space of PRM partition. Hence  necessitating
the use of absolute adresses.

Signed-off-by: Abhijit Pagare <abhijitpagare@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
2010-01-26 20:12:53 -07:00
Abhijit Pagare 3790300903 ARM: OMAP4: PM: OMAP4 Power Domain Porting Related Clean-up.
Module offsets were same for OMAP2 and OMAP3 while they differ for OMAP4.
Hence we need different macros for identifying platform specific offsets.

Signed-off-by: Abhijit Pagare <abhijitpagare@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
2010-01-26 20:12:51 -07:00
Sergio Aguirre 6b34f9d4e6 PM debug: Fix warning when no CONFIG_DEBUG_FS
Fix following warning when CONFIG_DEBUG_FS wasn't selected:

arch/arm/mach-omap2/pm-debug.c:57: warning: 'pm_dbg_init' declared 'static' but never defined

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-01-20 18:16:10 -08:00
Roel Kluin 61b17d972f OMAP: omap3_pm_get_suspend_state() error ignored in pwrdm_suspend_get()
val is an u64 pointer, we need an int to check the error.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-01-20 18:16:07 -08:00
Manjunatha GK ae559d8769 OMAP3: PM debug: fix build error when !CONFIG_DEBUG_FS
The PM debug code fails to build on when CONFIG_DEBUG_FS is not
enabled.

Build error log:
arch/arm/mach-omap2/built-in.o: In function `omap_sram_idle':
arch/arm/mach-omap2/pm34xx.c:449: undefined reference to `pm_dbg_regset_save'
arch/arm/mach-omap2/pm34xx.c:460: undefined reference to `pm_dbg_regset_save'
arch/arm/mach-omap2/built-in.o: In function `configure_vc':
arch/arm/mach-omap2/pm34xx.c:1237: undefined reference to `pm_dbg_regset_init'
arch/arm/mach-omap2/pm34xx.c:1238: undefined reference to `pm_dbg_regset_init'
make: *** [.tmp_vmlinux1] Error 1

This patch fixes the above errors.

Kernel booting is tested on omap zoom2 and zoom3 boards.

Signed-off-by: Manjunatha GK <manjugk@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-01-20 18:16:05 -08:00
Paul Walmsley 2354eb5a94 OMAP powerdomain/PM: use symbolic constants for the max number of power states
Replace some bare constants with power states.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
2009-12-11 17:00:41 -07:00
Kevin Hilman d7814e4df6 PM debug: allow configurable wakeup from suspend on OMAP GPtimer
Using debugfs, export a configurable wakeup timer to be used to
wakeup system from suspend.

If a non-zero value is written to
/debug/pm_debug/wakeup_timer_seconds, A timer wakeup event will wake
the system and resume after the configured number of seconds.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:28 -08:00
Kevin Hilman c40552bc82 OMAP3: PM debug: allow runtime toggle of PM features
Allow enable/disable of low-power states during idle.  To
enable low-power idle:

   echo 1 > /debug/pm_debug/sleep_while_idle

 to disable:

   echo 0 > /debug/pm_debug/sleep_while_idle

Also allow enable/disable of OFF-mode.  To enable:

   echo 1 > /debug/pm_debug/enable_off_mode

 to disable:

   echo 0 > /debug/pm_debug/enable_off_mode

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:27 -08:00
Tony Lindgren ce491cf854 omap: headers: Move remaining headers from include/mach to include/plat
Move the remaining headers under plat-omap/include/mach
to plat-omap/include/plat. Also search and replace the
files using these headers to include using the right path.

This was done with:

#!/bin/bash
mach_dir_old="arch/arm/plat-omap/include/mach"
plat_dir_new="arch/arm/plat-omap/include/plat"
headers=$(cd $mach_dir_old && ls *.h)
omap_dirs="arch/arm/*omap*/ \
drivers/video/omap \
sound/soc/omap"
other_files="drivers/leds/leds-ams-delta.c \
drivers/mfd/menelaus.c \
drivers/mfd/twl4030-core.c \
drivers/mtd/nand/ams-delta.c"

for header in $headers; do
	old="#include <mach\/$header"
	new="#include <plat\/$header"
	for dir in $omap_dirs; do
		find $dir -type f -name \*.[chS] | \
			xargs sed -i "s/$old/$new/"
	done
	find drivers/ -type f -name \*omap*.[chS] | \
		xargs sed -i "s/$old/$new/"
	for file in $other_files; do
		sed -i "s/$old/$new/" $file
	done
done

for header in $(ls $mach_dir_old/*.h); do
	git mv $header $plat_dir_new/
done

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-20 09:40:47 -07:00
Santosh Shilimkar 233fd64e7f omap: Split OMAP2_IO_ADDRESS to L3 and L4
This patch splits OMAP2_IO_ADDRESS to OMAP2_L3_IO_ADDRESS and
OMAP2_L4_IO_ADDRESS to reclaim more IO space.

The omap_read*() and omap_write*() functions will work only over
L4 address space. Current omap kernel stack uses these functions
only to access registers over L4 io address space

Note that these macros should only be used when ioremap does
not work. Please use ioremap instead in all new code.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-19 15:25:31 -07:00
Artem Bityutskiy ee894b18e0 OMAP3: PM: introduce a new powerdomain walk helper
The 'pwrdm_for_each()' function walks powerdomains with a spinlock
locked, so the the callbacks cannot do anything which may sleep.
This patch introduces a 'pwrdm_for_each_nolock()' helper which does
the same, but without the spinlock locked. This fixes the following
lockdep warning:

[    0.000000] WARNING: at kernel/lockdep.c:2460 lockdep_trace_alloc+0xac/0xec()
[    0.000000] Modules linked in:
(unwind_backtrace+0x0/0xdc) from [<c0045464>] (warn_slowpath_common+0x48/0x60)
(warn_slowpath_common+0x48/0x60) from [<c0067dd4>] (lockdep_trace_alloc+0xac/0xec)
(lockdep_trace_alloc+0xac/0xec) from [<c009da14>] (kmem_cache_alloc+0x1c/0xd0)
(kmem_cache_alloc+0x1c/0xd0) from [<c00b21d8>] (d_alloc+0x1c/0x1a4)
(d_alloc+0x1c/0x1a4) from [<c00a887c>] (__lookup_hash+0xd8/0x118)
(__lookup_hash+0xd8/0x118) from [<c00a9f20>] (lookup_one_len+0x84/0x94)
(lookup_one_len+0x84/0x94) from [<c010d12c>] (debugfs_create_file+0x8c/0x20c)
(debugfs_create_file+0x8c/0x20c) from [<c010d320>] (debugfs_create_dir+0x1c/0x20)
(debugfs_create_dir+0x1c/0x20) from [<c000e8cc>] (pwrdms_setup+0x60/0x90)
(pwrdms_setup+0x60/0x90) from [<c002e010>] (pwrdm_for_each+0x30/0x80)
(pwrdm_for_each+0x30/0x80) from [<c000e79c>] (pm_dbg_init+0x7c/0x14c)
(pm_dbg_init+0x7c/0x14c) from [<c00232b4>] (do_one_initcall+0x5c/0x1b8)
(do_one_initcall+0x5c/0x1b8) from [<c00083f8>] (kernel_init+0x90/0x10c)
(kernel_init+0x90/0x10c) from [<c00242c4>] (kernel_thread_exit+0x0/0x8)

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-10-05 10:51:00 -07:00
Tero Kristo 68d4778c70 OMAP: PM: Added suspend target state control to debugfs for OMAP3
Target state can be read / programmed via files under:
  [debugfs]/pm_debug/[pwrdm]/suspend

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-09-02 15:08:25 -07:00
Tero Kristo 2811d6b323 OMAP: PM debug: Add PRCM register dump support
Allows dumping out current register contents from the debug filesystem, and
also allows user to add arbitrary register save points into code. Current
register contents are available under debugfs at:

[debugfs]/pm_debug/registers/current

To add a save point, do following:

From module init (or somewhere before the save call, called only once):
  pm_dbg_init_regset(n); // n=1..4, allocates memory for dump area #n

From arbitrary code location:
  pm_dbg_regset_save(n); // n=1..4, saves registers to dump area #n

After this, the register dump can be seen under [debugfs]/pm_debug/registers/n

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-09-02 15:08:25 -07:00
Peter 'p2' De Schrijver 331b93f41d OMAP: PM: Add pm-debug counters
This patch provides the debugfs entries and a function which will be
called by the PM code to register the time spent per domain per
state. Also some new fields are added to the powerdomain struct to
keep the time information.

NOTE: As of v2.6.29, using getnstimeofday() after drivers are
suspended is no longer safe since the timekeeping subsystem is also
suspended as part of the suspend process.  Instead use sched_clock()
which on OMAP returns the 32k SYNC timer in nanoseconds.

Also, do not print out status for meta powerdomains (dpll*)

Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-09-02 15:08:24 -07:00
Tony Lindgren 941132606c OMAP: Remove OMAP_IO_ADDRESS, use OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS instead
Search and replace OMAP_IO_ADDRESS with OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS,
and convert omap_read/write into a functions instead of a macros.

Also rename OMAP_MPUIO_VBASE to OMAP1_MPUIO_VBASE.

In the long run, most code should use ioremap + __raw_read/write instead.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-08-28 10:50:33 -07:00
Kevin Hilman 8bd2294922 OMAP2/3: PM: push core PM code from linux-omap
This patch is to sync the core linux-omap PM code with mainline.  This
code has evolved and been used for a while the linux-omap tree, but
the attempt here is to finally get this into mainline.

Following this will be a series of patches from the 'PM branch' of the
linux-omap tree to add full PM hardware support from the linux-omap
tree.

Much of this PM core code was written by Jouni Hogander with
significant contributions from Paul Walmsley as well as many others
from Nokia, Texas Instruments and linux-omap community.

Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-05-28 10:58:50 -07:00