linux-toradex.git/drivers/power/avs, branch v3.11

PM / AVS: SmartReflex: use devm_* API to initialize SmartReflex

2013-06-10T17:50:48+00:00

Use of of devm_* API for resource allocation provides benefits such
as auto handling of resource free. This reduces possibility have
memory leaks in case of wrong error handling. All direct release
calls should be removed to avoid races.

Reported-by: Grygorii Strashko 
Signed-off-by: Andrii Tseglytskyi 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: use omap_sr * for enable/disable interface

2013-06-10T17:46:18+00:00

SmartReflex driver interface is natively divided to two parts:

- external SmartReflex interface
- interface between SmartReflex driver and SmartReflex Class

Functions which belong to AVS class interface can use
struct omap_sr* instead of struct voltatedomain*, to provide a
direct connection between SR driver and SR class. This allows
us to optimize and not do additional lookups where none is
required.

sr_enable() and sr_disable() are interface functions between
SR driver and SR class. They are typically used by Class driver
to enable/disable SmartReflex hardware module.
Now they take struct omap_sr* as input parameter.

Signed-off-by: Andrii Tseglytskyi 
Acked-by: Nishanth Menon 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: use omap_sr * for minmax interfaces

2013-06-10T17:46:17+00:00

SmartReflex driver interface is natively divided to two parts:

- external SmartReflex interface
- interface between SmartReflex driver and SmartReflex Class

Functions which belong to AVS class interface can use
struct omap_sr* instead of struct voltatedomain*, to provide a
direct connection between SR driver and SR class. This allows
us to optimize and not do additional lookups where none is
required.

sr_configure_minmax() is interface function between SR driver
and SR class. It is typically used by Class driver to
configure MINMAXAVG module inside SmartReflex module.
Now it takes struct omap_sr* as input parameter.

Signed-off-by: Andrii Tseglytskyi 
Acked-by: Nishanth Menon 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: use omap_sr * for errgen interfaces

2013-06-10T17:46:17+00:00

SmartReflex driver interface is natively divided to two parts:

- external SmartReflex interface
- interface between SmartReflex driver and SmartReflex Class

Functions which belong to AVS class interface can use
struct omap_sr* instead of struct voltatedomain*, to provide a
direct connection between SR driver and SR class. This allows
us to optimize and not do additional lookups where none is
required.

sr_disable_errgen() and sr_configure_errgen() are interface
functions between SR driver and SR class. They are typically
used by Class driver to configure error generator module during
SmartReflex enable/disable sequence.
Now they take struct omap_sr* as input parameter.

Signed-off-by: Andrii Tseglytskyi 
Acked-by: Nishanth Menon 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: fix driver name

2013-06-10T17:35:17+00:00

DRIVER_NAME was undefined for SmartReflex. Now it is
defined with valid value "smartreflex". It is needed
to define proper value for:
MODULE_ALIAS("platform:" DRIVER_NAME);

Signed-off-by: Andrii Tseglytskyi 
Acked-by: Nishanth Menon 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: disable runtime PM on driver remove

2013-06-10T17:35:17+00:00

Runtime PM should be disabled for device on driver remove,
otherwise runtime PM will be not balanced, and this will cause
an error message, on next driver probe.

Signed-off-by: Andrii Tseglytskyi 
Acked-by: Nishanth Menon 
Signed-off-by: Kevin Hilman

PM / AVS: SmartReflex: disable errgen before vpbound disable

2013-06-10T17:35:17+00:00

vpboundsintr_en is available inside the IP block as an re-sycned
version and one which is not. Due to this, there is an 1 sysclk
cycle window where the SR_SInterruptz signal could be asserted low.
IF, intr_en is cleared on the exact same cycle as the irqclr, an
additional pulse is generated which indicates for VP that
an additional adjustment of voltage is required.

This results in VP doing two voltage adjustments for the SRERR
(based on configuration, upto 4 steps), instead of the needed
1 step.
Due to the unexpected pulse from AVS which breaks the AVS-VP
communication protocol, VP also ends up in a stuck condition by
entering a state where VP module remains non-responsive
to any futher AVS adjustment events. This creates the symptom
called "TRANXDONE Timeout" scenario.

By disabling errgen prior to disable of intr_en, this situation
can be avoided.

Signed-off-by: Vincent Bour 
Signed-off-by: Leonardo Affortunati 
Signed-off-by: Nishanth Menon 
Signed-off-by: Andrii.Tseglytskyi 
Signed-off-by: Kevin Hilman

ARM: OMAP2+: Drop plat/cpu.h for omap2plus

2012-12-17T18:50:41+00:00

The cpu_is_omap macros are now local to arch/arm/mach-omap2
in soc.h and plat/cpu.h can finally be dropped for omap2+.
Thanks everybody for help with fixing the drivers.

Note that we can now also remove the unused plat/cpu.h from
smartreflex.c and isp.c as they will cause compile errors
with ARCH_MULTIPLATFORM enabled.

Cc: Kevin Hilman 
Acked-by: Jean Pihet 
Acked-by: Laurent Pinchart 
Acked-by: Mauro Carvalho Chehab 
Signed-off-by: Tony Lindgren

Merge tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-12-13T18:58:20+00:00

Pull ARM SoC power management and clock changes from Olof Johansson:
 "This branch contains a largeish set of updates of power management and
  clock setup.  The bulk of it is for OMAP/AM33xx platforms, but also a
  few around hotplug/suspend/resume on Exynos.

  It includes a split-up of some of the OMAP clock data into separate
  files which adds to the diffstat, but gross delta is fairly reasonable."

* tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
  ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h
  ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support
  watchdog: OMAP: fixup for ARM multiplatform support
  ARM: EXYNOS: Add flush_cache_all in suspend finisher
  ARM: EXYNOS: Remove scu_enable from cpuidle
  ARM: EXYNOS: Fix soft reboot hang after suspend/resume
  ARM: EXYNOS: Add support for rtc wakeup
  ARM: EXYNOS: fix the hotplug for Cortex-A15
  ARM: OMAP2+: omap_device: Correct resource handling for DT boot
  ARM: OMAP2+: hwmod: Add possibility to count hwmod resources based on type
  ARM: OMAP2+: hwmod: Add support for per hwmod/module context lost count
  ARM: OMAP2+: PRM: initialize some PRM functions early
  ARM: OMAP2+: voltage: fixup oscillator handling when CONFIG_PM=n
  ARM: OMAP4: USB: power down MUSB PHY during boot
  ARM: OMAP2+: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP2xxx: clock: drop obsolete clock data
  ARM: OMAP2: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP3+: DPLL: drop !CONFIG_COMMON_CLK sections
  ARM: AM33xx: clock: drop obsolete clock data
  ARM: OMAP3xxx: clk: drop obsolete clock data
  ...

power: remove use of __devexit

2012-11-28T19:43:22+00:00

CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton 
Cc: Anton Vorontsov 
Cc: David Woodhouse 
Acked-by: Mark Brown 
Signed-off-by: Greg Kroah-Hartman