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47 commits

Author SHA1 Message Date
Santosh Shilimkar
9827266097 ARM: OMAP4: PM: Add CPUidle support
Add OMAP4 CPUIDLE support. CPU1 is left with defualt idle and
the low power state for it is managed via cpu-hotplug.

This patch adds MPUSS low power states in cpuidle.

	C1 - CPU0 ON + CPU1 ON + MPU ON
	C2 - CPU0 OFF + CPU1 OFF + MPU CSWR
	C3 - CPU0 OFF + CPU1 OFF + MPU OSWR

OMAP4460 onwards, MPUSS power domain doesn't support OFF state any more
anymore just like CORE power domain. The deepest state supported is OSWr.
Ofcourse when MPUSS and CORE PD transitions to OSWR along with device
off mode, even the memory contemts are lost which is as good as
the PD off state.

On OMAP4 because of hardware constraints, no low power states are
targeted when both CPUs are online and in SMP mode. The low power
states are attempted only when secondary CPU gets offline to OFF
through hotplug infrastructure.

Thanks to Nicole Chalhoub <n-chalhoub@ti.com> for doing exhaustive
C-state latency profiling.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-12-08 11:29:01 -08:00
Linus Torvalds
ae4c42e4e4 Merge branch 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (133 commits)
  ARM: EXYNOS4: Change devname for FIMD clkdev
  ARM: S3C64XX: Cleanup mach/regs-fb.h from mach-s3c64xx
  ARM: S5PV210: Cleanup mach/regs-fb.h from mach-s5pv210
  ARM: S5PC100: Cleanup mach/regs-fb.h from mach-s5pc100
  ARM: S3C24XX: Use generic s3c_set_platdata for devices
  ARM: S3C64XX: Use generic s3c_set_platdata for OneNAND
  ARM: SAMSUNG: Use generic s3c_set_platdata for NAND
  ARM: SAMSUNG: Use generic s3c_set_platdata for USB OHCI
  ARM: SAMSUNG: Use generic s3c_set_platdata for HWMON
  ARM: SAMSUNG: Use generic s3c_set_platdata for FB
  ARM: SAMSUNG: Use generic s3c_set_platdata for TS
  ARM: S3C64XX: Add PWM backlight support on SMDK6410
  ARM: S5P64X0: Add PWM backlight support on SMDK6450
  ARM: S5P64X0: Add PWM backlight support on SMDK6440
  ARM: S5PC100: Add PWM backlight support on SMDKC100
  ARM: S5PV210: Add PWM backlight support on SMDKV210
  ARM: EXYNOS4: Add PWM backlight support on SMDKC210
  ARM: EXYNOS4: Add PWM backlight support on SMDKV310
  ARM: SAMSUNG: Create a common infrastructure for PWM backlight support
  clocksource: convert 32-bit down counting clocksource on S5PV210/S5P64X0
  ...

Fix up trivial conflict in arch/arm/mach-imx/mach-scb9328.c
2011-07-25 12:38:42 -07:00
Russell King
cbe263497d ARM: pm: omap3: move saving of the auxiliary control registers to C
Move the saving of the auxiliary control registers into C; there's
no need for this to be in assembly code.  This results in less
assembly code to deal with in OMAP.

Kevin tested full-chip retention and off on 3430/n900, 3530/Overo and
3630/Zoom3.

Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-30 08:47:35 +01:00
Jean Pihet
46e130d298 ARM: pm: omap3: run the ASM sleep code from DDR
Most of the ASM sleep code (in arch/arm/mach-omap2/sleep34xx.S)
is copied to internal SRAM at boot and after wake-up from CORE OFF
mode.  However only a small part of the code really needs to run from
internal SRAM.

This fix lets most of the ASM idle code run from the DDR in order to
minimize the SRAM usage and the overhead in the code copy.

The only pieces of code that are mandatory in SRAM are:
- the i443 erratum WA,
- the i581 erratum WA,
- the security extension code.

SRAM usage:
- original code:
  . 560 bytes for omap3_sram_configure_core_dpll (used by DVFS),
  . 852 bytes for omap_sram_idle (used by suspend/resume in RETention),
  . 124 bytes for es3_sdrc_fix (used by suspend/resume in OFF mode on ES3.x),
  . 108 bytes for save_secure_ram_context (used on HS parts only).

With this fix the usage for suspend/resume in RETention goes down 288
bytes, so the gain in SRAM usage for suspend/resume is 564 bytes.

Also fixed the SRAM initialization sequence to avoid an unnecessary
copy to SRAM at boot time and for readability.

Tested on Beagleboard (ES2.x) in idle with full RET and OFF modes.

Kevin Hilman tested retention and off on 3430/n900, 3530/Overo and
3630/Zoom3

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-29 19:07:47 +01:00
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
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
Jean Pihet
0490891819 OMAP3: cpuidle: change the power domains modes determination logic
The achievable power modes of the power domains in cpuidle
depends on the system wide 'enable_off_mode' knob in debugfs.
Upon changing enable_off_mode, do not change the C-states
'valid' field but instead dynamically restrict the power modes
when entering idle.

The C-states 'valid' field is just used to enable/disable some
C-states at init and shall not be changed later on.

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-20 17:15:54 +02:00
Jean Pihet
866ba0ef96 OMAP3: clean-up mach specific cpuidle data structures
- sleep_latency and wake_latency are not used, replace them by
  exit_latency which is used by cpuidle. exit_latency simply is
  the sum of sleep_latency and wake_latency,
- replace threshold by target_residency,
- changed the OMAP3 specific cpuidle code accordingly,
- changed the OMAP3 board code accordingly.

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-05-20 17:15:53 +02:00
Linus Torvalds
0df0914d41 Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (258 commits)
  omap: zoom: host should not pull up wl1271's irq line
  arm: plat-omap: iommu: fix request_mem_region() error path
  OMAP2+: Common CPU DIE ID reading code reads wrong registers for OMAP4430
  omap4: mux: Remove duplicate mux modes
  omap: iovmm: don't check 'da' to set IOVMF_DA_FIXED flag
  omap: iovmm: disallow mapping NULL address when IOVMF_DA_ANON is set
  omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected
  omap4: board-omap4panda: Initialise the serial pads
  omap3: board-3430sdp: Initialise the serial pads
  omap4: board-4430sdp: Initialise the serial pads
  omap2+: mux: Add macro for configuring static with omap_hwmod_mux_init
  omap2+: mux: Remove the use of IDLE flag
  omap2+: Add separate list for dynamic pads to mux
  perf: add OMAP support for the new power events
  OMAP4: Add IVA OPP enteries.
  OMAP4: Update Voltage Rail Values for MPU, IVA and CORE
  OMAP4: Enable 800 MHz and 1 GHz MPU-OPP
  OMAP3+: OPP: Replace voltage values with Macros
  OMAP3: wdtimer: Fix CORE idle transition
  Watchdog: omap_wdt: add fine grain runtime-pm
  ...

Fix up various conflicts in
 - arch/arm/mach-omap2/board-omap3evm.c
 - arch/arm/mach-omap2/clock3xxx_data.c
 - arch/arm/mach-omap2/usb-musb.c
 - arch/arm/plat-omap/include/plat/usb.h
 - drivers/usb/musb/musb_core.h
2011-03-17 19:28:15 -07:00
Thara Gopinath
4071318983 OMAP3: PM: Set/clear T2 bit for Smartreflex on TWL
Voltage control on TWL can be done using VMODE/I2C1/I2C_SR.
Since almost all platforms use I2C_SR on omap3, omap3_twl_init by
default expects that OMAP's I2C_SR is plugged in to TWL's I2C
and calls omap3_twl_set_sr_bit. On platforms where I2C_SR is not connected,
the board files are expected to call omap3_twl_set_sr_bit(false) to
ensure that I2C_SR path is not set for voltage control and prevent
the default behavior of omap3_twl_init.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Shweta Gulati <shweta.gulati@ti.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-03-09 16:15:50 -08:00
Jean Pihet
b6338bdc83 ARM: 6649/1: omap: use fncpy to copy the PM code functions to SRAM
The new fncpy API is better suited* for copying some
code to SRAM at runtime. This patch changes the ad-hoc
code to the more generic fncpy API.

*: 1. fncpy ensures that the thumb mode bit is propagated,
   2. fncpy provides the security of type safety between the
     original function and the sram function pointer.

Tested OK on OMAP3 in low power modes (RET/OFF)
using omap2plus_defconfig with !CONFIG_THUMB2_KERNEL.
Compile tested on OMAP1/2 using omap1_defconfig.

Boot tested on OMAP1 & OMAP2
Tested OK with suspend/resume on OMAP2420/n810

Boots fine on osk5912 and n800

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 14:26:08 +00:00
Thara Gopinath
7bc3ed9ae6 OMAP4: Register voltage PMIC parameters with the voltage layer
TWL6030 is the power IC used along with OMAP4 in OMAP4 SDPs,
blaze boards and panda boards. This patch registers the OMAP4
PMIC specific information with the voltage layer.
This also involves implementing a different formula for
voltage to vsel and vsel to voltage calculations from
TWL4030.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-22 14:31:45 -08:00
Thara Gopinath
fbc319f676 OMAP3: PM: Register TWL4030 pmic info with the voltage driver.
This patch registers the TWL4030 PMIC specific informtion
with the voltage driver. Failing this patch the voltage driver
is unware of the formula to use for vsel to voltage and vice versa
conversion and lot of other PMIC dependent parameters.

This file is based on the arch/arm/plat-omap opp_twl_tpl.c file
by Paul Walmsley. The original file is replaced by this file.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-22 14:31:41 -08:00
Thara Gopinath
0c0a5d61ed OMAP3: PM: Adding smartreflex device file.
This patch adds support for device registration of various
smartreflex module present in the system. This patch introduces
the platform data for smartreflex devices which include
the efused n-target vaules, a parameter to indicate
whether smartreflex autocompensation needs to be
enabled on init or not. An API
omap_enable_smartreflex_on_init is provided for the
board files to enable smartreflex autocompensation during
system boot up.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-22 14:31:37 -08:00
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
Tony Lindgren
b9e7683bbc Merge branch 'pm-opp' of ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus 2010-12-21 17:05:57 -08:00
Jean Pihet
d3cdfd2a15 OMAP3: remove unused code from the ASM sleep code
Remove unused code:
- macros,
- variables,
- unused semaphore locking API. This API shall be added back
  when needed,
- infinite loops for debug.

Tested on N900 and Beagleboard with full RET and OFF modes,
using cpuidle and suspend.

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Tested-by: Nishanth Menon<nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:54 -08:00
Eduardo Valentin
cc1b602887 OMAP3630: PM: Erratum i583: disable coreoff if < ES1.2
Limitation i583: Self_Refresh Exit issue after OFF mode

Issue:
When device is waking up from OFF mode, then SDRC state machine sends
inappropriate sequence violating JEDEC standards.

Impact:
OMAP3630 < ES1.2 is impacted as follows depending on the platform:
CS0: for 38.4MHz as internal sysclk, DDR content seen to be stable, while
	for all other sysclk frequencies, varied levels of instability
	seen based on varied parameters.
CS1: impacted

This patch takes option #3 as recommended by the Silicon erratum:
Avoid core power domain transitioning to OFF mode. Power consumption
impact is expected in this case.
To do this, we route core OFF requests to RET request on the impacted
revisions of silicon.

Acked-by: Jean Pihet <j-pihet@ti.com>

[nm@ti.com: rebased the code to 2.6.37-rc2- short circuit code changed a bit]
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:53 -08:00
Nishanth Menon
80723c3fe4 OMAP3: PM: make omap3_cpuidle_update_states independent of enable_off_mode
Currently omap3_cpuidle_update_states makes whole sale decision
on which C states to update based on enable_off_mode variable
Instead, achieve the same functionality by independently providing
mpu and core deepest states the system is allowed to achieve and
update the idle states accordingly.

Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
[khilman: fixed additional user of this API in OMAP CPUidle driver]
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:52 -08:00
Peter 'p2' De Schrijver
c4236d2e79 OMAP3630: PM: Disable L2 cache while invalidating L2 cache
While coming out of MPU OSWR/OFF states, L2 controller is reseted.
The reset behavior is implementation specific as per ARMv7 TRM and
hence $L2 needs to be invalidated before it's use. Since the
AUXCTRL register is also reconfigured, disable L2 cache before
invalidating it and re-enables it afterwards. This is as per
Cortex-A8 ARM documentation.
Currently this is identified as being needed on OMAP3630 as the
disable/enable is done from "public side" while, on OMAP3430, this
is done in the "secure side".

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>

Acked-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

[nm@ti.com: ported to 2.6.37-rc2, added hooks to enable the logic only on 3630]
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:51 -08:00
Nishanth Menon
458e999eb1 OMAP3630: PM: Erratum i608: disable RTA
Erratum id: i608
RTA (Retention Till Access) feature is not supported and leads to device
stability issues when enabled. This impacts modules with embedded memories
on OMAP3630

Workaround is to disable RTA on boot and coming out of core off.
For disabling RTA coming out of off mode, we do this by overriding the
restore pointer for 3630 as the first point of entry before caches are
touched and is common for GP and HS devices. To disable earlier than
this could be possible by modifying the PPA for HS devices, but not for
GP devices.

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>

Acked-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

[ambresh@ti.com: co-developer]
Signed-off-by: Ambresh K <ambresh@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:50 -08:00
Nishanth Menon
8cdfd83473 OMAP3: pm: introduce errata handling
Introduce errata handling for OMAP3. This patch introduces
errata variable and stub for initialization which will be
filled up by follow-on patches.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:45:49 -08:00
Nishanth Menon
f5a6422d4e omap4: opp: add OPP table data
This patch adds OPP tables for OMAP4. New file has been added to keep
the OMAP4 opp tables and the registration of these tables with the
generic opp framework by OMAP SoC OPP interface.

Based on:
http://dev.omapzoom.org/?p=santosh/kernel-omap4-base.git;a=blob;f=arch/arm/mach-omap2/opp44xx_data.c;h=252e3d0cb6050a64f390b9311c1c4977d74f762a;hb=refs/heads/omap4_next

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:30:40 -08:00
Nishanth Menon
fd1478cd61 omap: opp: add OMAP3 OPP table data and common init
Add OPP data for OMAP34xx and OMAP36xx and initialization functions
to populate OPP tables based on current SoC.
introduce an OMAP generic opp initialization routine which OMAP3
and OMAP4+ SoCs can use to register their OPP definitions.

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-12-21 14:30:40 -08:00
Loïc Minier
ebfa88cfa1 OMAP: PM: Fix build when CONFIG_PM_DEBUG isn't set
Since 6cdee91257 the references to
enable_off_mode and sleep_while_idle can't be resolved when CONFIG_PM_DEBUG
isn't set:
arch/arm/mach-omap2/built-in.o: In function `omap_uart_restore_context':
arch/arm/mach-omap2/serial.c:253: undefined reference to `enable_off_mode'
arch/arm/mach-omap2/built-in.o: In function `omap3_can_sleep':
arch/arm/mach-omap2/pm34xx.c:479: undefined reference to `sleep_while_idle'

Simply #define these in pm.h just like omap2_pm_debug.

Signed-off-by: Loïc Minier <loic.minier@linaro.org>
[khilman: moved down into existing #ifdef section]
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-10-01 13:50:34 -07:00
Santosh Shilimkar
eb6a2c7550 omap: pm: Move set_pwrdm_state routine to common pm.c
The set_pwrdm_state() is needed on omap4 as well so move
this routine to common pm.c file so that it's available for omap3/4

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-09-23 17:14:11 -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
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
Kalle Jokiniemi
709731bb36 OMAP3: cpuidle: Add valid field into C-state parameter passing
Different boards benefit differently from the available
seven C-states for cpu idle. In most cases, only few,
properly spaced (in terms of consumption and latency)
C-states are required to make the power management
optimal. Hence we need a possibility to pass which
C-states are actually used for each board.

So added the valid field to cpuidle_params and added
support to 3430sdp, which uses the paramenter passing.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-23 11:05:02 -08:00
Kevin Hilman
bb4de3df69 OMAP3: cpuidle: configure latencies/thresholds from board file
The CPUidle C state latencies and thresholds are dependent on various
board specific details.  This patch makes it possible to configure
these values from the respective board files.

omap3_pm_init_cpuidle() can now be optionally called from board files
to pass board specific cpuidle parameters.  If the board files do not
use this function to pass the params default values are used which
might cause higher consumption dur to wrong state selection by the
governor.

This patch only updates the 3430sdp board files to use
omap3_pm_init_cpuidle().

From Kalle, in addition to original patch from Rajendra:

Building without CONFIG_CPU_IDLE or CONFIG_PM causes build to fail if
cpu idle parameters are tried to pass using omap3_pm_init_cpuidle
function.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-23 11:05:01 -08:00
Sanjeev Premi
6af83b3861 OMAP3: cpuidle: Update statistics for correct state
When 'enable_off_mode' is 0, the target power state for MPU
and CORE was locally changed to PWRDM_POWER_RET but, the
statistics are updated for idle state originally selected
by the governor.

This patch 'invalidates' the idle states that lead either of
MPU or Core to PWRDM_POWER_OFF state when 'enable_off_mode'
is '0'. The states are valid once 'enable_off_mode' is set
to '1'.

Added function next_valid_state() to check if current state
is valid; else get the next valid state. It is called from
omap3_enter_idle_bm().

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-23 11:05:00 -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
Kalle Jokiniemi
0343371e22 OMAP3: PM: CPUidle: fix init sequencing
Previously omap3_idle_init() was called in device_init, while
omap_pm_init() is called at late_initcall. This causes the cpu idle
driver to call omap_sram_idle before it is properly initialized. This
patch fixes the issue by moving omap3_idle_init into omap3_pm_init.

Signed-off-by: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:49 -08:00
Rajendra Nayak
20b0166988 OMAP3: PM: CPUidle: support retention and off-mode C-states
This patch adds support and enables state C4(MPU RET + CORE RET)
and MPU OFF states (C3 and C5.)

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:48 -08:00
Rajendra Nayak
99e6a4d22f OMAP3: PM: CPUidle: base driver and support for C1-C2
Basic CPUidle driver for OMAP3 with deepest sleep state supported
being MPU CSWR.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:48 -08:00
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
Tero Kristo
27d59a4a2d OMAP3 PM: off-mode support for HS/EMU devices
For HS/EMU devices, some additional resources need to be
saved/restored for off-mode support.  Namely, saving the secure RAM
and a pointer to it in the scratchpad.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-11-11 14:42:25 -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
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
Kevin Hilman
7cc515f74d OMAP2/3: PM: make PM __init calls static
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-08-05 09:10:50 -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