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  1. 04 9月, 2012 19 次提交
    • R
      PM / Domains: Document cpuidle-related functions and change their names · 40114447
      由 Rafael J. Wysocki 提交于 
      The names of the cpuidle-related functions in
drivers/base/power/domain.c are inconsistent with the names of the
other exported functions in that file (the "pm_" prefix is missing
from them) and they are missing kerneldoc comments.

Fix that by adding the missing "pm_" prefix to the names of those
functions and add kerneldoc comments documenting them.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      40114447
    • R
      PM / Domains: Add power-on function using names to identify domains · 8bc0251d
      由 Rafael J. Wysocki 提交于 
      It sometimes is necessary to turn on a given PM domain when only
the name of it is known and the domain pointer is not readily
available.  For this reason, add a new helper function,
pm_genpd_name_poweron(), allowing the caller to turn on a PM domain
using its name for identification.  To avoid code duplication,
move the domain lookup code to a separate function.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      8bc0251d
    • R
      PM / Domains: Make it possible to use names when adding subdomains · fb7268be
      由 Rafael J. Wysocki 提交于 
      Add a new helper function, pm_genpd_add_subdomain_names(), allowing
the caller to add a subdomain to a generic PM domain using names for
domain identification (both domains have to be initialized before).

This function is useful for adding subdomains to PM domains whose
representations are stored in tables, when the caller doesn't know
the indices of the domain to add the subdomain to and of the
subdomain itself, but it knows the domains' names.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      fb7268be
    • R
      PM / Domains: Make it possible to use domain names when adding devices · b5abb085
      由 Rafael J. Wysocki 提交于 
      Add a new helper function __pm_genpd_name_add_device() allowing
a device to be added to a (registered) generic PM domain identified
by name.  Add a wrapper around it, pm_genpd_name_add_device(),
passing NULL as the last argument and reorganize pm_domains.h for the
new functions to be defined consistently with the existing ones.

These functions are useful for adding devices to PM domains whose
representations are stored in tables, when the caller doesn't know
the index of the domain to add the device to, but it knows the
domain's name.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      b5abb085
    • R
      PM: Do not use the syscore flag for runtime PM · feb70af0
      由 Rafael J. Wysocki 提交于 
      The syscore device PM flag used to mark the devices (belonging to
PM domains) that should never be turned off, except for the system
core (syscore) suspend/hibernation and resume stages, need not be
accessed by the runtime PM core functions, because all of the devices
it is set for need to be marked as "irq safe" anyway and are
protected from being turned off by runtime PM by ensuring that their
usage counters are always set.

For this reason, make the syscore flag system-wide PM-specific
and simplify the code used for manipulating it, because it need not
acquire the device's power.lock any more.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      feb70af0
    • R
      sh: MTU2: Basic runtime PM support · 3cb6f10a
      由 Rafael J. Wysocki 提交于 
      Modify the SH MTU2 clock event device driver to support runtime PM at
a basic level (i.e. device clocks can be disabled and enabled, but
domain power must be on, because the device has to be marked as
"irq safe").
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      3cb6f10a
    • R
      sh: CMT: Basic runtime PM support · bad81383
      由 Rafael J. Wysocki 提交于 
      Modify the SH CMT clock source/clock event device driver to support
runtime PM at a basic level (i.e. device clocks can be disabled and
enabled, but domain power must be on, because the devices have to
be marked as "irq safe").
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      bad81383
    • R
      sh: TMU: Basic runtime PM support · 61a53bfa
      由 Rafael J. Wysocki 提交于 
      Modify the SH TMU clock source/clock event device driver to support
runtime PM at a basic level (i.e. device clocks can be disabled and
enabled, but domain power must be on, because the devices have to
be marked as "irq safe").
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      61a53bfa
    • R
      PM / Domains: Do not measure start time for "irq safe" devices · e2e3e4e5
      由 Rafael J. Wysocki 提交于 
      The genpd_start_dev() routine used by pm_genpd_runtime_resume()
to put "irq safe" devices into the full power state measures the
time necessary to "start" the device and updates its PM QoS timing
data if necessary.  This may lead to a deadlock if the given device
is a clock source and genpd_start_dev() is invoked from within the
clock source's .enable() routine, which will happen if that routine
uses pm_runtime_get_sync(), for example, to ensure that the device
is operational.

For this reason, introduce a special routine analogous to
genpd_start_dev(), called genpd_start_dev_no_timing(), that doesn't
carry out the time measurement, and make pm_genpd_runtime_resume()
use it instead of genpd_start_dev() to power up "irq safe" devices.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      e2e3e4e5
    • R
      PM / Domains: Move syscore flag from subsys data to struct device · dbf37414
      由 Rafael J. Wysocki 提交于 
      The syscore device PM flag is used to mark the devices (belonging to
a PM domain) that should never be turned off, except for the system
core (syscore) suspend/hibernation and resume stages.  That flag is
stored in the device's struct pm_subsys_data object whose address is
available from struct device.  However, in some situations it may be
convenient to set that flag before the device is added to a PM
domain, so it is better to move it directly to the "power" member of
struct device.  Then, it can be checked by the routines in
drivers/base/power/runtime.c and drivers/base/power/main.c, which is
more straightforward.

This also reduces the number of dev_gpd_data() invocations in the
generic PM domains framework, so the overhead related to the syscore
flag is slightly smaller.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      dbf37414
    • R
      PM / Domains: Rename the always_on device flag to syscore · 6fb28bad
      由 Rafael J. Wysocki 提交于 
      The always_on device flag is used to mark the devices (belonging to
a PM domain) that should never be turned off, except for the system
core (syscore) suspend/hibernation and resume stages.  Change name
of that flag to "syscore" to better reflect its purpose.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      6fb28bad
    • R
      PM / Runtime: Allow helpers to be called by early platform drivers · bed2b42d
      由 Rafael J. Wysocki 提交于 
      Runtime PM helper functions, like pm_runtime_get_sync(), cannot be
called by early platform device drivers, because the devices' power
management locks are not initialized at that time.  This is quite
inconvenient, so modify early_platform_add_devices() to initialize
the devices power management locks as appropriate and make sure that
they won't be initialized more than once if an early platform
device is going to be used as a regular one later.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      bed2b42d
    • R
      PM: Reorganize device PM initialization · e91c11b1
      由 Rafael J. Wysocki 提交于 
      Make the device power management initialization more straightforward
by moving the initialization of common (i.e. used by both runtime PM
and system suspend) fields to a separate routine.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      e91c11b1
    • R
      sh: MTU2: Introduce clock events suspend/resume routines · cc7ad456
      由 Rafael J. Wysocki 提交于 
      Introduce suspend/resume routines for SH MTU2 clock event devices
such that if those devices belong to a PM domain, the generic PM
domains framework will be notified that the given domain may be
turned off (during system suspend) or that it has to be turned on
(during system resume).
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      cc7ad456
    • R
      sh: CMT: Introduce clocksource/clock events suspend/resume routines · 9bb5ec88
      由 Rafael J. Wysocki 提交于 
      Introduce suspend/resume routines for SH CMT clock event devices and
modify the suspend/resume routines for SH CMT clock sources such that
if those devices belong to a PM domain, the generic PM domains
framework will be notified that the given domain may be turned off
(during system suspend) or that it has to be turned on (during system
resume).
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      9bb5ec88
    • R
      sh: TMU: Introduce clocksource/clock events suspend/resume routines · eaa49a8c
      由 Rafael J. Wysocki 提交于 
      Introduce suspend/resume routines for SH TMU clock source and
clock event device such that if those devices belong to a PM domain,
the generic PM domains framework will be notified that the given
domain may be turned off (during system suspend) or that it has to
be turned on (during system resume).

This change allows the A4R domain on SH7372 to be turned off during
system suspend (tested on the Mackerel board) if the TMU clock source
and/or clock event device is in use.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NMagnus Damm <damm@opensource.se>
      eaa49a8c
    • R
      timekeeping: Add suspend and resume of clock event devices · adc78e6b
      由 Rafael J. Wysocki 提交于 
      Some clock event devices, for example such that belong to PM domains,
need to be handled in a spcial way during the timekeeping suspend
and resume (which takes place in the system core, or "syscore",
stages of system power transitions) in analogy with clock sources.

Introduce .suspend() and .resume() callbacks for clock event devices
that will be executed by timekeeping_suspend/_resume(), respectively,
next the the clock sources' .suspend() and .resume() callbacks.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      adc78e6b
    • R
      PM / Domains: Add power off/on function for system core suspend stage · 77f827de
      由 Rafael J. Wysocki 提交于 
      Introduce function pm_genpd_syscore_switch() and two wrappers around
it, pm_genpd_syscore_poweroff() and pm_genpd_syscore_poweron(),
allowing the callers to let the generic PM domains framework know
that the given device is not necessary any more and its PM domain
can be turned off (the former) or that the given device will be
required immediately, so its PM domain has to be turned on (the
latter) during the system core (syscore) stage of system suspend
(or hibernation) and resume.

These functions will be used for handling devices registered as
clock sources and clock event devices that belong to PM domains.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      77f827de
    • R
      PM / Domains: Introduce simplified power on routine for system resume · 802d8b49
      由 Rafael J. Wysocki 提交于 
      Introduce function pm_genpd_sync_poweron() for restoring domain power
during resume from system suspend and hibernation.  It can be much
simpler than pm_genpd_poweron(), because it doesn't have to care
about locking and it can skip many checks done by the latter.

Modify pm_genpd_resume_noirq() and pm_genpd_restore_noirq() to use
the new function.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      802d8b49
  3. 02 9月, 2012 2 次提交
    • L
      Linux 3.6-rc4 · 4cbe5a55
      由 Linus Torvalds 提交于
      4cbe5a55
    • J
      time: Move ktime_t overflow checking into timespec_valid_strict · cee58483
      由 John Stultz 提交于 
      Andreas Bombe reported that the added ktime_t overflow checking added to
timespec_valid in commit 4e8b1452 ("time: Improve sanity checking of
timekeeping inputs") was causing problems with X.org because it caused
timeouts larger then KTIME_T to be invalid.

Previously, these large timeouts would be clamped to KTIME_MAX and would
never expire, which is valid.

This patch splits the ktime_t overflow checking into a new
timespec_valid_strict function, and converts the timekeeping codes
internal checking to use this more strict function.
Reported-and-tested-by: NAndreas Bombe <aeb@debian.org>
Cc: Zhouping Liu <zliu@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      cee58483
  5. 01 9月, 2012 3 次提交
  7. 31 8月, 2012 1 次提交
    • L
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 155e36d4
      由 Linus Torvalds 提交于 
      Pull drm fixes from Dave Airlie:
 "A bunch of scattered fixes ati/intel/nouveau, couple of core ones,
  nothing too shocking or different."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm: Add EDID_QUIRK_FORCE_REDUCED_BLANKING for ASUS VW222S
  gma500: Consider CRTC initially active.
  drm/radeon: fix dig encoder selection on DCE61
  drm/radeon: fix double free in radeon_gpu_reset
  drm/radeon: force dma32 to fix regression rs4xx,rs6xx,rs740
  drm/radeon: rework panel mode setup
  drm/radeon/atom: powergating fixes for DCE6
  drm/radeon/atom: rework DIG modesetting on DCE3+
  drm/radeon: don't disable plls that are in use by other crtcs
  drm/radeon: add proper checking of RESOLVE_BOX command for r600-r700
  drm/radeon: initialize tracked CS state
  drm/radeon: fix reading CB_COLORn_MASK from the CS
  drm/nvc0/copy: check PUNITS to determine which copy engines are disabled
  i915: Quirk no_lvds on Gigabyte GA-D525TUD ITX motherboard
  drm/i915: Use the correct size of the GTT for placing the per-process entries
  drm: Check for invalid cursor flags
  drm: Initialize object type when using DRM_MODE() macro
  drm/i915: fix color order for BGR formats on IVB
  drm/i915: fix wrong order of parameters in port checking functions
      155e36d4
  9. 30 8月, 2012 15 次提交