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* OMAP3: PM: CPUidle: base driver and support for C1-C2Rajendra Nayak2009-11-114-2/+260
| | | | | | | | 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>
* OMAP3: PM: Program SDRC to send self refresh on timeout of AUTO_CNTRajendra Nayak2009-11-113-18/+28
| | | | | | | | | | | | | | | | | | | | Due to an OMAP3 errata (1.142), on HS/EMU devices SDRC should be programed to issue automatic self refresh on timeout of AUTO_CNT = 1 prior to any transition to OFF mode. This is needed only on sil rev's ES3.0 and above. This patch enables the above needed WA in the SDRC power register value stored in scratchpad, so that ROM code restores this value in SDRC POWER on the wakeup path. The original SDRC POWER register value is stored and restored back in omap_sram_idle() function. This fixes some random crashes observed while stressing suspend on HS/EMU devices. 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: PM: Enable IO-CHAIN wakeupKalle Jokiniemi2009-11-112-3/+37
| | | | | | | | | | OMAP 3430 ES3.1 chips have a separate bit for IO daisy-chain wake up enabling. It needs to be enabled when entering retention or off state, otherwise waking up might not work in all situations. Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: MPU and CORE should stay awake if there is CAM domain ACTIVETero Kristo2009-11-111-0/+6
| | | | | | | | | | | MPU and CORE should stay awake if there is CAM domain ACTIVE. This is because that module doesn't have wake-up capability. This should replace the patch that is currently in the PM branch. Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Prevent PER from going OFF when CORE is going INATero Kristo2009-11-111-5/+14
| | | | | | | OMAP3 can't generate wakeups in this state, thus it is not permitted. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: decouple PER and CORE context save and restoreKevin Hilman2009-11-111-22/+29
| | | | Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* PM debug: allow configurable wakeup from suspend on OMAP GPtimerKevin Hilman2009-11-114-0/+28
| | | | | | | | | | | 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 Hilman2009-11-114-2/+53
| | | | | | | | | | | | | | | | | | | | | 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: Wait for SDRC ready iso a blind delayPeter 'p2' De Schrijver2009-11-111-12/+36
| | | | | | | | This patch improves the wakeup SRAM code polling the SDRC to become ready instead of just waiting for a fixed amount of time. Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* PM: Disable usb host HW save and restoreKalle Jokiniemi2009-11-111-1/+7
| | | | | | | | | | The hardware SAVEANDRESTORE mechanism seems to leave USB HOST power domain permanently into active state after one transition from off to active state. Disabling for now. Signed-off-by: Kalle Jokiniemi <ext-kalle.jokiniemi@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Fix INTC context save/restoreAaro Koskinen2009-11-111-2/+2
| | | | | | | Wrong index was used for ILR. Signed-off-by: Aaro Koskinen <Aaro.Koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: SDRC auto-refresh workaround for off-modeTero Kristo2009-11-113-3/+91
| | | | | | | | | Errata: ES3.0, ES3.1 SDRC not sending auto-refresh when OMAP wakes-up from OFF mode Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP: Store reboot mode in scratchpad on OMAP34xxJuha Yrjola2009-11-111-2/+11
| | | | | | | | | | | The reboot mode can be communicated to a bootloader (or the kernel itself) with a scratchpad register. This functionality is especially useful, if userspace is allowed to change the reboot mode. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP: PM: Clear DMA channel state after a wakeupAaro Koskinen2009-11-111-0/+6
| | | | | | | | Clear DMA channel states so that users can assume a known initial state. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Fix PLL_MOD CLKEN offset in scratchpadKalle Jokiniemi2009-11-111-1/+1
| | | | | | | | | | | | | | | | | | The CM_CLKEN_PLL register saved in scratchpad memory was wrongly using offset of 0x0004 instead of 0x0000. The effect of this was that boot ROM code would restore the wrong value when waking up from off mode. This wrong value, however, will be overwritten by prcm context restore. Still, a short period of wrong clock settings in CM_CLKEN_PLL remained between ROM code and prcm context restore. This is fixed by the patch. Problem reported by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* ARM: OMAP: SMS: save/restore of SMS_SYSCONFIG for off-modeKalle Jokiniemi2009-11-113-0/+30
| | | | | | | | The SMS_SYSCONFIG register gets reset in off mode, added a save/restore mechanism for that. Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Fix secure SRAM context save/restoreKalle Jokiniemi2009-11-113-19/+17Star
| | | | | | | | | | | | | | | | | | | | | | | The secure sram context save uses dma channels 0 and 1. In order to avoid collision between kernel DMA transfers and ROM code dma transfers, we need to reserve DMA channels 0 1 on high security devices. A bug in ROM code leaves dma irq status bits uncleared. Hence those irq status bits need to be cleared when restoring DMA context after off mode. There was also a faulty parameter given to PPA in the secure ram context save assembly code, which caused interrupts to be enabled during secure ram context save. This caused the save to fail sometimes, which resulted the saved context to be corrupted, but also left DMA channels in secure mode. The secure mode DMA channels caused "DMA secure error with device 0" errors to be displayed. Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Save and restore also CM_CLKSEL1_PLL_IVA2Jouni Hogander2009-11-111-0/+5
| | | | | | | | CM_CLKSEL1_PLL_IVA2 is not saved/restored currently. This patch is adding save and restore for it. Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Enable SDRAM auto-refresh during sleepTero Kristo2009-11-111-0/+29
| | | | | | | | Fix for ES3.0 bug: SDRC not sending auto-refresh when OMAP wakes-up from OFF mode (warning for HS devices.) Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: save secure RAM only during initTero Kristo2009-11-111-2/+17
| | | | | | | | | | | | | | | | | | | | | | The function omap3_save_secure_ram() is now called only once during the initialization of the device and consequent sleep cycles will re-use the same saved contents for secure RAM. Users who need secure services should do secure RAM saving before entering off-mode, if a secure service has been accessed after last save. There are both latency and reliability issues with saving secure RAM context in the idle path. The context save uses a hardware resource which takes an order of hundreds of milliseconds to initialize after a wake up from off-mode, and also there is no way of checking whether it is ready from kernel side or not. It just crashes if you use it too quickly Additional fix to ensure scratchpad save is done after secure RAM by Roger Quadros. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3 PM: off-mode support for HS/EMU devicesTero Kristo2009-11-114-3/+126
| | | | | | | | | 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: PM: DMA context save/restore for off-mode supportTero Kristo2009-11-113-0/+47
| | | | | | | | | | For HS/EMU devices, these additional features are also used: - DMA interrupt disable routine added - Added DMA controller reset to DMA context restore Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: CORE domain off-mode supportRajendra Nayak2009-11-112-1/+73
| | | | | | | | Add context save and restore for CORE powerdomain resources in order to support off-mode. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: MPU off-mode supportRajendra Nayak2009-11-112-8/+14
| | | | | | | | Adds a 'save_state' option when calling into SRAM idle function and adds some minor cleanups of SRAM asm code. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Restore MMU table entryRajendra Nayak2009-11-111-0/+35
| | | | | | | | | | | | | During the MMU restoration on the restore path from MPU OFF, the page table entry for the page consisting of the code being executed is modified to make MMU return VA=PA. The MMU is then enabled and the original entry is being stored in scratchpad. This patch reads the original values stored in scratchpad, and restores them back. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: handle PER/NEON/CORE in idleRajendra Nayak2009-11-111-10/+54
| | | | | | | | | | | Expand the powerdomains handled in the idle path to include PER, NEON and CORE. This includes properly clearing the previous powerstates, linking NEON state to MPU state and calling the UART prepare functions for only the appropraite powerdomain transitions (CORE for UART1,2, PER for UART3.) Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: restore SRAM functions after off-mode.Rajendra Nayak2009-11-113-6/+18
| | | | | | | | Generalize the copy of SRAM functions into omap_push_sram_idle() so it can be used on init but also after off-mode transitions. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: SCM context save/restoreRajendra Nayak2009-11-112-4/+202
| | | | | | | | | | | Add context save and restore for the System Control Module to suport off-mode. ETK and debobs definitions added by Peter De Schrijver. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Peter 'p2' De Schrijver <peter.de-schrijver@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: Populate scratchpad contentsRajendra Nayak2009-11-112-0/+213
| | | | | | | | This patch populates the scratchpad contents as expected by the bootROM code. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: PRCM context save/restoreRajendra Nayak2009-11-113-1/+396
| | | | | | | | | | | | | Add context save and restore for PRCM module to support off-mode. Additional registers (CM_CLKSEL4, CM_CLKEN, CM_CLKEN2) added by Tero Kristo. Missing CM_CLKEN_PLL_IVA2 register added by Kalle Jokiniemi. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: INTC context save/restoreRajendra Nayak2009-11-112-0/+71
| | | | | | | Add context save and restore for the INTC module to support off-mode. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: GPIO context save/restoreRajendra Nayak2009-11-112-1/+94
| | | | | | | Add context save and restore to enable off-mode. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP3: PM: GPMC context save/restoreRajendra Nayak2009-11-112-3/+98
| | | | | | | | This patch adds the context save and restore functions for GPMC to enable off-mode. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* Merge branch '7xx-iosplit-plat' with omap-fixesTony Lindgren2009-11-11213-1449/+1581
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| * omap: headers: Move remaining headers from include/mach to include/platTony Lindgren2009-10-20172-440/+440
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: headers: Create headers necessary for compile under mach-omap1 and ↵Tony Lindgren2009-10-2030-0/+100
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mach-omap2 Create the headers needed for compiling under mach-omap1/include/mach and mach-omap2/include/mach. This was done with the following script: #!/bin/bash mach_files="clkdev.h gpio.h hardware.h io.h irqs.h memory.h \ smp.h system.h timex.h uncompress.h vmalloc.h" omaps="mach-omap1 mach-omap2" mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" mkdir -p $plat_dir_new git add $plat_dir_new for dir in $omaps; do mach_dir_new="arch/arm/$dir/include/mach" for header in $mach_files; do file="$mach_dir_new/$header" if [ ! -f $file ]; then echo -ne "/*\n * $file\n */\n\n#include <plat/$header>\n" > $file git add $file if [ ! -f $plat_dir_new/$header ]; then git mv $mach_dir_old/$header $plat_dir_new/$header fi fi done done Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: headers: Move mtd-xip.h to be mach-omap1 specificTony Lindgren2009-10-201-0/+0
| | | | | | | | | | | | These registers are omap1 specific. Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Split vmalloc.h for mach-omap1 and mach-omap2Tony Lindgren2009-10-202-5/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier patch "omap: Remap L3, L4 to get more kernel io address space" changed the VMALLOC_END. However, this change causes problems on mach-omap1: BUG: mapping for 0xe0000000 at 0xe0000000 overlaps vmalloc space BUG: mapping for 0xe1000000 at 0xe1000000 overlaps vmalloc space Fix this by creating separate vmalloc.h files for mach-omap1 and mach-omap2. Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: headers: Split entry-macro.S for mach-omap1 and mach-omap2Tony Lindgren2009-10-202-50/+58
| | | | | | | | | | | | Split entry-macro.S for mach-omap1 and mach-omap2 Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: headers: Split debug-macro.S for mach-omap1 and mach-omap2Tony Lindgren2009-10-202-13/+47
| | | | | | | | | | | | | | This also creates the include/mach subdirectories under mach-omap1 and mach-omap2. Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: headers: Add mach path to include filesTony Lindgren2009-10-201-6/+6
| | | | | | | | | | | | | | This is to prepare for moving hardware.h to live under plat instead of mach. Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Add OMAP4 L3 and L4 peripherals.Santosh Shilimkar2009-10-204-3/+55
| | | | | | | | | | | | | | This patch adds few necessary peripherals for OMAP4. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Fix DEBUG_LL UART io addressSantosh Shilimkar2009-10-2015-18/+18
| | | | | | | | | | | | | | | | This patch fixes the low level debug UART io address as per this series. The change is essential to have CONFIG_DEBUG_LL working. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Move SRAM map to claim more io spaceSantosh Shilimkar2009-10-201-3/+3
| | | | | | | | | | | | | | This patch moves SRAM map to free up more kernel address io space. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Remap L3, L4 to get more kernel io address spaceSantosh Shilimkar2009-10-202-40/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch remap L3 and L4 io space to get more kernel address space. With this patch, 512 MB of IO space is reclaimed. Some more combinations are possible but to make it uniform across OMAP24XX, OMAP34XX and OMAP4430, these io combinations are chosen Once this is reviewed and tested sufficiently, a documentation entry can be created to ease up reading and debugging. Like "Documentation/arm/omap/io_map.txt" Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Split OMAP2_IO_ADDRESS to L3 and L4Santosh Shilimkar2009-10-2013-66/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * omap: Use ioremap for omap4 L4 codeTony Lindgren2009-10-207-16/+42
| | | | | | | | | | | | | | Use ioremap for omap4 L4 code Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Use getnstimeofday for omap_deviceTony Lindgren2009-10-201-31/+19Star
| | | | | | | | | | | | | | Use getnstimeofday for omap_device Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Use ioremap in omap_hwmod.cTony Lindgren2009-10-201-6/+12
| | | | | | | | | | | | | | | | Use ioremap in omap_hwmod.c Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Use ioremap in gpio.cTony Lindgren2009-10-201-95/+129
| | | | | | | | | | | | Use ioremap in gpio.c Signed-off-by: Tony Lindgren <tony@atomide.com>
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