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path: root/arch/arm/plat-omap/gpio.c (follow)
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2010-06-10omap: GPIO: fix auto-disable of debounce clockKevin Hilman1-0/+1
The addition of the new debounce code (commit 168ef3d9a56bd8bffe0ef4189c450888b4aefefe) broke the auto-disable of debounce clocks on idle by forgetting to update the debounce clock enable mask. Add back the updating of bank->dbck_enable_mask so debounce clocks are auto-disabled. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-05-27arm: omap: remove the unused omap_gpio_set_debounce methodsFelipe Balbi1-74/+0
Nobody uses that anymore, so remove and expect drivers to use the gpiolib implementation. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Cc: David Brownell <david-b@pacbell.net> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27arm: omap: gpio: implement set_debounce methodFelipe Balbi1-0/+68
OMAP supports debouncing of gpio lines, implement the method using gpiolib. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Cc: David Brownell <david-b@pacbell.net> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-20omap: GPIO: Fix OMAP4 GPIO reg access issuesCharulatha V1-12/+47
Access to some of the OMAP4 GPIO registers are not properly handled. This patch fixes it. This patch is tested on 3430SDP and 4430SDP boards Signed-off-by: Charulatha V <charu@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-05-12OMAP: GPIO: remove duplicate debugfs interfaceKevin Hilman1-107/+0
The generic gpiolib provides a debugfs interface to GPIOs which provides identical (but nicer looking) data as the OMAP specific one. This patch completely drops the OMAP specific interface (/debug/omap_gpio) in favor of using the generic one (/debug/gpio.) Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12OMAP3: GPIO: Removed a couple of unneeded registers from context save/restoreTero Kristo1-10/+0
setwkuena and setdataout are covered already by wake_en and dataout fields. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12OMAP3: GPIO: disable GPIO debounce clocks on idleKevin Hilman1-0/+8
Ensure GPIO debounce clocks are disabled when idle. Otherwise, clocks will prevent PER powerdomain from entering retention. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12OMAP2/3: GPIO: generalize prepare for idleKevin Hilman1-6/+13
Currently, the GPIO 'prepare' hook is only called when going to off-mode, while the function is called 'prepare_for_retention.' This patch renames the function to 'prepare_for_idle' and calls it for any powersate != PWRDM_POWER_ON passing in the powerstate. The hook itself is then responsible for doing various preparation based on the powerstate. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12OMAP3: GPIO: Only enable WAKEUPEN for edge detection GPIOsChunqiu Wang1-2/+12
According to the GPIO 'Wakeup and Interrupt' section of the TRM[1], wake-up requests can only be generated on edge transitions. Also for OMAP3, only edge GPIOs may lose interrupts when PER enters RET/OFF state, this is addressed by gpio prepare|resume idle functions [1] Section 25.5.3.1 OMAP34xx_ES3.1_TRM_V_Q Signed-off-by: Chunqiu Wang <cqwang@motorola.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-05-12OMAP3: GPIO fixes for off-modeTero Kristo1-5/+14
Off mode is now using the omap2 retention fix code for scanning GPIOs during off-mode transitions. All the *non_wakeup_gpios variables are now used for off-mode transition tracking on OMAP3. This patch fixes cases where GPIO state changes are missed during off-mode. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-22omap: gpio: fix incorrect matching of IRQ_TYPE_EDGE_BOTHJanusz Krzysztofik1-3/+3
Since IRQ_TYPE_EDGE_BOTH is defined as (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING), testing against it with a bitwise AND also matches both single-edge cases in addition to the intended both edges case. Fix it, replacing with a more accurate expression. Created and tested againts linux-2.6.34-rc3. Applicable to 2.6.33-stable as well. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-03-11omap: Fix gpio_resume_after_retentionSergio Aguirre1-5/+5
For omap4 case, this was wrongly writing GPIO_LEVELDETECTx registers with OMAP24XX_ offset and OMAP4_ offset. Bug introduced in commit: commit 3f1686a9bfe74979c6ad538c78039730f665f77e Author: Tony Lindgren <tony@atomide.com> Date: Mon Feb 15 09:27:25 2010 -0800 omap: Fix gpio.c for multi-omap for omap4 Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-23omap4: Use irq line defines from irq-44xx.hSantosh Shilimkar1-6/+6
This patch removes all the omap4 specific irq line defines from plat/irqs.h and includes auto-generated irqs-44xx.h All the legacy naming style defines are replaced with the one from irqs-44xx.h Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> [tony@atomide.com: updated to compile with usb-musb.c] Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap: Fix gpio.c for multi-omap for omap4Tony Lindgren1-91/+133
Set up METHOD_GPIO_44XX instead of trying to use the METHOD_GPIO_24XX. Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3/4: Replace orred CONFIG_ARCH_OMAP2/3/4 with CONFIG_ARCH_OMAP2PLUSTony Lindgren1-24/+12
omap: Replace orred CONFIG_ARCH_OMAP2/3/4 with CONFIG_ARCH_OMAP2PLUS Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap3: Replace ARCH_OMAP34XX with ARCH_OMAP3Tony Lindgren1-29/+29
Replace ARCH_OMAP34XX with ARCH_OMAP3 Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2: Convert ARCH_OMAP24XX to ARCH_OMAP2Tony Lindgren1-28/+28
Convert ARCH_OMAP24XX to ARCH_OMAP2 Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3: Multiboot compile fixes to compile in omap2 and omap3Tony Lindgren1-1/+1
Allows compiling in omap2 and omap3. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-01-29omap: define _toggle_gpio_edge_triggering only for OMAP1Uwe Kleine-König1-2/+2
The only usage of _toggle_gpio_edge_triggering is in an #ifdef CONFIG_ARCH_OMAP1 block, so only provide it if CONFIG_ARCH_OMAP1 is defined, too. This fixes a compiler warning: arch/arm/plat-omap/gpio.c:758: warning: '_toggle_gpio_edge_triggering' defined but not used when compiling for ARCH_OMAP2, ARCH_OMAP3 or ARCH_OMAP4. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-01-08omap: Remove uninitialized warning for gpio.cTony Lindgren1-1/+1
Flags is not used on 15xx. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-01-08omap: gpio: Simultaneously requested rising and falling edgeCory Maccarrone1-1/+60
Some chips, namely any OMAP1 chips using METHOD_MPUIO, OMAP15xx and OMAP7xx, cannot be setup to respond to on-chip GPIO interrupts in both rising and falling edge directions -- they can only respond to one direction or the other, depending on how the ICR is configured. Additionally, current code forces rising edge detection if both flags are specified: if (trigger & IRQ_TYPE_EDGE_RISING) l |= 1 << gpio; else if (trigger & IRQ_TYPE_EDGE_FALLING) l &= ~(1 << gpio); else goto bad; This change implements a toggle function that will modify the ICR to flip the direction of interrupt for IRQs that are requested with both rising and falling flags. The toggle function is not called for chips and GPIOs it does not apply to through the use of a flip_mask that's added on a per-bank basis. The mask is only set for those GPIOs where a toggle is necessary. Edge detection starts out the same as above with FALLING mode first. The toggle happens on EACH interrupt; without it, we have the following sequence of actions on GPIO transition: ICR GPIO Result 0x1 0 -> 1 (rising) Interrupt 0x1 1 -> 0 (falling) No interrupt (set ICR to 0x0 manually) 0x0 0 -> 1 (rising) No interrupt 0x0 1 -> 0 (falling) Interrupt That is, with the ICR set to 1 for a gpio, only rising edge interrupts are caught, and with it set to 0, only falling edge interrupts are caught. If we add in the toggle, we get this: ICR GPIO Result 0x1 0 -> 1 (rising) Interrupt (ICR set to 0x0) 0x0 1 -> 0 (falling) Interrupt (ICR set to 0x1) 0x1 0 -> 1 ... so, both rising and falling are caught, per the request for both (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING). Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-12-15const: constify remaining dev_pm_opsAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-22omap: GPIO module enable/disableCharulatha V1-0/+32
This patch disables a GPIO module when all pins of a GPIO module are inactive (clock gating forced at module level) and enables the module when any gpio in the module is requested. The module is enabled only when "mod_usage" indicates that no GPIO in that module is currently active and the GPIO being requested is the 1st one to be active in that module. Each module would be disabled in omap_gpio_free() API when all GPIOs in a particular module becomes inactive. The module is re-enabled in omap_gpio_request() API when a GPIO is requested from the module that was previously disabled. Since individual GPIO's bookkeeping is added in this patch via "mod_usage", the same is used in omap_set_gpio_debounce() & omap_set_gpio_debounce_time() APIs to ensure that the gpio being used is actually "requested" prior to being used (Nishant Menon's <nm@ti.comSuggestion) GPIO module level details are specific to hardware and hence introducing this patch in low level layer (plat-omap/gpio.c) Signed-off-by: Charulatha V <charu@ti.com> Acked-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-11-22Merge 7xx-iosplit-plat-merge with omap-fixesTony Lindgren1-248/+269
Merge branch '7xx-iosplit-plat-merge' into omap-for-linus
2009-11-18omap: fix unlikely(x) < yRoel Kluin1-1/+1
The closing parenthesis was not in the right location. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2009-11-11OMAP3: PM: GPIO context save/restoreRajendra Nayak1-0/+92
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>
2009-10-19omap: Use ioremap in gpio.cTony Lindgren1-95/+129
Use ioremap in gpio.c Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-10-07OMAP7XX: Rename all the rest of the omap730 references in omap1 coreAlistair Buxton1-46/+46
This patch is part of a series which removes references to omap730 in code which is shared with omap850, replacing them with references to omap7xx. This updates all the remaining omap730 references in miscellaneous local variables, macros and similar. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
2009-10-07OMAP7XX: Replace omap730 references in irqs.h and all usersAlistair Buxton1-7/+7
This patch is part of a series which removes references to omap730 in code which is shared with omap850, replacing them with references to omap7xx. Turns INT_730_* to INT_7XX_* for definitions in irqs.h and all users. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
2009-10-07OMAP7XX: GPIO: Remove duplicate omap850 codeAlistair Buxton1-119/+14
This patch is part of a series which unifies all duplicated code between omap730 and omap850. All cpu checks are converted to cpu_is_omap7xx() and CONFIG_ARCH_OMAP850 is added to all CONFIG_ARCH_OMAP730 checks. Signed-off-by: Alistair Buxton <a.j.buxton@gmail.com> Reviewed-by: Zebediah C. McClure <zmc@lurian.net>
2009-09-24omap: Fix a OMAP_MPUIO_VBASE typo for 850Angelo Arrifano1-1/+1
This was crashing omap850 devices. Reported-by: Alistair Buxton <a.j.buxton@gmail.com> Signed-off-by: Angelo Arrifano <miknix@gmail.com> Signed-obb-by: Tony Lindgren <tony@atomide.com>
2009-09-18Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6Linus Torvalds1-48/+67
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (47 commits) OMAP clock: use debugfs_remove_recursive() for rewinding OMAP2/3/4 core: create omap_device layer OMAP: omap_hwmod: call omap_hwmod init at boot; create interconnects OMAP2/3/4: create omap_hwmod layer OMAP2/3 board-*.c files: read bootloader configuration earlier OMAP2/3/4 PRCM: add module IDLEST wait code OMAP2/3 PM: create the OMAP PM interface and add a default OMAP PM no-op layer OMAP3 clock: remove superfluous calls to omap2_init_clk_clkdm OMAP clock: associate MPU clocks with the mpu_clkdm OMAP3 clock: Fixed processing of bootarg 'mpurate' OMAP: SDRC: Add several new register definitions OMAP: powerdomain: Fix overflow when doing powerdomain deps lookups. OMAP: PM: Added suspend target state control to debugfs for OMAP3 OMAP: PM debug: Add PRCM register dump support OMAP: PM debug: make powerdomains use PM-debug counters OMAP: PM: Add pm-debug counters OMAP: PM: Add closures to clkdm_for_each and pwrdm_for_each. OMAP: PM: Hook into PM counters OMAP: PM counter infrastructure. OMAP3: PM: fix lockdep warning caused by omap3_pm_init ...
2009-09-14Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6Linus Torvalds1-4/+10
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (23 commits) at_hdmac: Rework suspend_late()/resume_early() PM: Reset transition_started at dpm_resume_noirq PM: Update kerneldoc comments in drivers/base/power/main.c PM: Add convenience macro to make switching to dev_pm_ops less error-prone hp-wmi: Switch driver to dev_pm_ops floppy: Switch driver to dev_pm_ops PM: Trivial fixes PM / Hibernate / Memory hotplug: Always use for_each_populated_zone() PM/Hibernate: Do not try to allocate too much memory too hard (rev. 2) PM/Hibernate: Do not release preallocated memory unnecessarily (rev. 2) PM/Hibernate: Rework shrinking of memory PM: Fix typo in label name s/Platofrm_finish/Platform_finish/ PM: Run-time PM platform device bus support PM: Introduce core framework for run-time PM of I/O devices (rev. 17) Driver Core: Make PM operations a const pointer PM: Remove platform device suspend_late()/resume_early() V2 USB: Rework musb suspend()/resume_early() I2C: Rework i2c-s3c2410 suspend_late()/resume() V2 I2C: Rework i2c-pxa suspend_late()/resume_early() DMA: Rework txx9dmac suspend_late()/resume_early() ... Fix trivial conflict in drivers/base/platform.c (due to same constification patch being merged in both sides, along with some other PM work in the PM branch)
2009-09-12Merge branch 'master' into develRussell King1-32/+89
2009-08-28OMAP: GPIO: Avoid generating extra IRQsEero Nurkkala1-4/+23
It is possible for GPIO IRQ lines configured with falling edge triggering only to get IRQs at the rising edge upon the exit of offmode. And vice versa. Prevent such IRQs to arrive by generating the IRQ obeying the detection scheme. Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-08-28OMAP: Rename OMAP_MPUIO_BASE to OMAP1_MPUIO_BASETony Lindgren1-2/+2
Rename OMAP_MPUIO_BASE to OMAP1_MPUIO_BASE Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-08-28OMAP: Remove OMAP_IO_ADDRESS, use OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS insteadTony Lindgren1-43/+43
Search and replace OMAP_IO_ADDRESS with OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS, and convert omap_read/write into a functions instead of a macros. Also rename OMAP_MPUIO_VBASE to OMAP1_MPUIO_VBASE. In the long run, most code should use ioremap + __raw_read/write instead. Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-08-18Merge branch 'master' into for-linusRafael J. Wysocki1-32/+95
2009-08-10Merge branch 'pm-upstream/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pmRussell King1-0/+6
2009-08-05Merge branch 'pm-upstream/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-stableRussell King1-0/+6
2009-08-05OMAP: GPIO: clear/restore level/edge detect settings on mask/unmaskKevin Hilman1-0/+6
If IRQ triggering is enabled, it can trigger a pending interrupt even for masked interrupts. Any pending GPIO interrupts can prevent the powerdomain from hitting retention. Problem found, reported and additional review and testing by Chunquiu Wang. Tested-by: Chunquiu Wang <cqwang@motorola.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2009-08-05OMAP: GPIO: Fix incorrect gpio_get logic for output GPIOsRoger Quadros1-32/+89
gpio_get() should return DATAIN register value when the GPIO is configured as input whereas it should return DATAOUT register value when the GPIO is configured as output. Now /sys/kernel/debug/gpio shows proper values for output GPIOs Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-07-28ARM: OMAP4: Update the GPIO supportSyed Rafiuddin1-51/+198
This patch adds GPIO support on OMAP4430 development platform. Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com>
2009-07-22ARM: Rework omap suspend_late()/resume_early()Magnus Damm1-4/+10
This patch reworks platform driver power management code for omap drivers using late/early legacy callbacks. The callbacks are converted for CONFIG_SUSPEND like this: suspend_late() -> suspend_noirq() resume_early() -> resume_noirq() Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-06-23OMAP2/3: Initialize gpio debounce registerjanboe1-0/+1
Some bootloader may initialize debounce register and this will make dbclk not consist with the debounce register after linux kernel boot up. Signed-off-by: janboe <janboe.ye@gmail.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-28ARM: OMAP4: Add minimal support for omap4Santosh Shilimkar1-34/+100
This patch adds the support for OMAP4. The platform and machine specific headers and sources updated for OMAP4430 SDP platform. OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture. It's a dual core SOC with GIC used for interrupt handling and SCU for cache coherency. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-16ARM: OMAP3: Fix number of GPIO lines for 34xxVikram Pandita1-1/+1
As per 3430 TRM, there are 6 banks [0 to 191] Signed-off-by: Tom Rix <Tom.Rix@windriver.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-04-23ARM: OMAP3: Fixed spurious IRQ issue for GPIO interruptsRoger Quadros1-1/+5
Flush posted write to IRQSTATUS register in GPIO IRQ handler. This eliminates the below error for all peripherals that use GPIO interrupts. <4>Spurious irq 95: 0xffffffdf, please flush posted write for irq 31 Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-04-23ARM: OMAP2/3: GPIO: do not attempt to wake-enableKevin Hilman1-10/+4
The GPIO IRQ enable/disable path attempts to also enable IRQ wake support for the parent GPIO bank IRQ as well. However, since there is no 'set_wake' hook for the bank IRQs, these calls will always fail. Also, since the enable will fail on the suspend path, the disable on the resume path will trigger unbalanced enable/disable warnings. This was discovered in the suspend/resume path on OMAP3/Beagle using the gpio-keys driver which disables/re-enables GPIO IRQ wakeups in the suspend/resume path. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-03-23[OMAP850] Changes to base IO subsystem, v2Zebediah C. McClure1-6/+105
Changes to base IO subsystem. Signed-off-by: Zebediah C. McClure <zmc@lurian.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
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