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* OMAP3: PM: Set/clear T2 bit for Smartreflex on TWLThara Gopinath2011-03-09
| | | | | | | | | | | | | | | | 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>
* OMAP4: Register voltage PMIC parameters with the voltage layerThara Gopinath2010-12-22
| | | | | | | | | | | | 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>
* OMAP3: PM: Register TWL4030 pmic info with the voltage driver.Thara Gopinath2010-12-22
| | | | | | | | | | | | | 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>
* OMAP3: PM: Adding smartreflex device file.Thara Gopinath2010-12-22
| | | | | | | | | | | | | | | 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>
* OMAP2+: powerdomain: move header file from plat-omap to mach-omap2Paul Walmsley2010-12-21
| | | | | | | | | | | | | | | | | | | | 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>
* Merge branch 'pm-opp' of ↵Tony Lindgren2010-12-21
|\ | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus
| * omap4: opp: add OPP table dataNishanth Menon2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * omap: opp: add OMAP3 OPP table data and common initNishanth Menon2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3: remove unused code from the ASM sleep codeJean Pihet2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3630: PM: Erratum i583: disable coreoff if < ES1.2Eduardo Valentin2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3: PM: make omap3_cpuidle_update_states independent of enable_off_modeNishanth Menon2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3630: PM: Disable L2 cache while invalidating L2 cachePeter 'p2' De Schrijver2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3630: PM: Erratum i608: disable RTANishanth Menon2010-12-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | OMAP3: pm: introduce errata handlingNishanth Menon2010-12-21
|/ | | | | | | | | 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>
* OMAP: PM: Fix build when CONFIG_PM_DEBUG isn't setLoïc Minier2010-10-01
| | | | | | | | | | | | | | | | Since 6cdee91257bee23a46dc869ca62469b67cba2c7e 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>
* omap: pm: Move set_pwrdm_state routine to common pm.cSantosh Shilimkar2010-09-23
| | | | | | | | | 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>
* omap: pm-debug: Move common debug code to pm-debug.cSantosh Shilimkar2010-09-23
| | | | | | | | | 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>
* OMAP3: PM: Add milliseconds interface to suspend wakeup timerAri Kauppi2010-05-12
| | | | | | | | | | | 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>
* OMAP3: cpuidle: Add valid field into C-state parameter passingKalle Jokiniemi2010-02-23
| | | | | | | | | | | | | | | 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>
* OMAP3: cpuidle: configure latencies/thresholds from board fileKevin Hilman2010-02-23
| | | | | | | | | | | | | | | | | | | | | | | | | 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>
* OMAP3: cpuidle: Update statistics for correct stateSanjeev Premi2010-02-23
| | | | | | | | | | | | | | | | | | | 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>
* OMAP3: PM debug: fix build error when !CONFIG_DEBUG_FSManjunatha GK2010-01-20
| | | | | | | | | | | | | | | | | | | | | 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>
* OMAP3: PM: CPUidle: fix init sequencingKalle Jokiniemi2009-11-11
| | | | | | | | | | 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>
* OMAP3: PM: CPUidle: support retention and off-mode C-statesRajendra Nayak2009-11-11
| | | | | | | | 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>
* OMAP3: PM: CPUidle: base driver and support for C1-C2Rajendra Nayak2009-11-11
| | | | | | | | 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>
* PM debug: allow configurable wakeup from suspend on OMAP GPtimerKevin Hilman2009-11-11
| | | | | | | | | | | 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>
* OMAP3: PM debug: allow runtime toggle of PM featuresKevin Hilman2009-11-11
| | | | | | | | | | | | | | | | | | | | | 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>
* OMAP3 PM: off-mode support for HS/EMU devicesTero Kristo2009-11-11
| | | | | | | | | 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>
* omap: headers: Move remaining headers from include/mach to include/platTony Lindgren2009-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* OMAP: PM: Added suspend target state control to debugfs for OMAP3Tero Kristo2009-09-02
| | | | | | | | 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>
* OMAP: PM debug: Add PRCM register dump supportTero Kristo2009-09-02
| | | | | | | | | | | | | | | | | | | | | 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>
* OMAP: PM: Add pm-debug countersPeter 'p2' De Schrijver2009-09-02
| | | | | | | | | | | | | | | | | | 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>
* OMAP2/3: PM: make PM __init calls staticKevin Hilman2009-08-05
| | | | Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP2/3: PM: push core PM code from linux-omapKevin Hilman2009-05-28
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>
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