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2013-12-12ARM: at91: remove AT91_PROGRAMMABLE_CLOCKS configuration optionNicolas Ferre1-3/+0
This AT91 specific Kconfig option removed the code that dealt with programmable clocks. Each AT91 SoC embeds programmable clocks and there is little gain to remove this code in case that such a clock is not used. If this option is not selected, it causes certain drivers to fail to build. We simply remove this option instead of adding code just to build a workaround. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-12-02ARM: at91: move at91_pmc.h to include/linux/clk/at91_pmc.hBoris BREZILLON1-1/+1
This patch moves at91_pmc.h header from machine specific directory (arch/arm/mach-at91/include/mach/at91_pmc.h) to clk include directory (include/linux/clk/at91_pmc.h). We need this to avoid reference to machine specific headers in clk drivers. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Acked-by: Felipe Balbi <balbi@ti.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-10-17ARM: at91: cpuidle: Convert to platform driverDaniel Lezcano1-8/+19
Using the platform driver model is a good way to separate the cpuidle specific code from the low level pm code. It allows to remove the dependency between these two components. The platform_device is located in the pm code and a 'set' function has been added to set the standby function from the AT91_SOC_START initialization function. Each SoC with a cpuidle driver will set the standby function in the platform_data field at init time. Then pm code will register the cpuidle platform device. The cpuidle driver will register the platform_driver and use the device's platform_data as a standby callback in the idle path. The at91_pm_enter function contains a { if then else } based on cpu_is_xx similar to what was in cpuidle. This is considered dangerous when adding a new SoC. Like the cpuidle driver, a standby ops is defined and assigned when the SoC init function specifies what is its standby function and reused in the at91_pm_enter's 'case' block. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-06-21ARM: at91: fix at91_extern_irq usage for non-dt boardsJean-Christophe PLAGNIOL-VILLARD1-1/+1
Since 4b68520dc0ec96153bc0d87bca5ffba508edfcf ARM: at91: add AIC5 support we allocate the at91_extern_irq. This patch makes it static and stores the non-dt extern irq in the soc structure. It is then possible to use a at91_get_extern_irq() function to get the value for outside of the irq driver. It is useful for passing its value to at91_aic_init(). Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> [nicolas.ferre@atmel.com: rework commit message] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-04-19Merge tag 'at91-soc' of git://github.com/at91linux/linux-at91 into late/cleanupOlof Johansson1-0/+2
From Nicolas Ferre: Little modification in SoC presentation in kernel log. Removing of a long-standing warning in sam9263 PM code. * tag 'at91-soc' of git://github.com/at91linux/linux-at91: ARM: at91: suspend both memory controllers on at91sam9263 ARM: at91: change "Unknown" qualifier SoC subtype handling Signed-off-by: Olof Johansson <olof@lixom.net>
2013-04-18ARM: at91: suspend both memory controllers on at91sam9263Arnd Bergmann1-0/+2
For the past three years, we have had a #warning in mach-at91 about the sdram_selfrefresh_enable or at91sam9_standby functions possibly not working on at91sam9263. In the meantime a function was added to do the right thing on at91sam9g45, which looks like it should also work on '9263. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [nicolas.ferre@atmel.com: remove paragraph in commit message] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
2013-03-14ARM: at91: add gpio suspend/resume support when using pinctrlLudovic Desroches1-2/+8
gpio suspend/resume and wakeup sources where not managed when using pinctrl so it was impossible to wake up the system with a gpio. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-11-06arm: at91: move reset controller header to arm/arm/mach-at91Jean-Christophe PLAGNIOL-VILLARD1-1/+1
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-11-06arm: at91: move at91_shdwc.h to arch/arm/mach-at91Jean-Christophe PLAGNIOL-VILLARD1-1/+1
This is only used by old boards style or via core code. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-11-06arm: at91 move at91_aic.h to arch/arm/mach-at91Jean-Christophe PLAGNIOL-VILLARD1-1/+1
as this is only used board old style board old mach code Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-10-04ARM: at91: unused variable in at91_pm_verify_clocksArnd Bergmann1-2/+3
The code using the variable 'i' in this function is conditional which results in a harmless compiler warning. Using the IS_ENABLED macro instead of #ifdef makes the code look nicer and gets rid of the warning. Without this patch, building at91sam9263_defconfig results in: /home/arnd/linux-arm/arch/arm/mach-at91/pm.c: In function 'at91_pm_verify_clocks': /home/arnd/linux-arm/arch/arm/mach-at91/pm.c:137:6: warning: unused variable 'i' [-Wunused-variable] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-07-02ARM: at91: sparse irq supportLudovic Desroches1-0/+1
Enable sparse irq support for multisoc image. It involves to add the NR_IRQS_LEGACY offset to static SoC irq number definitions since NR_IRQS_LEGACY irq descs are allocated before AIC requests irq descs allocation. Move NR_AIC_IRQS macro to a more appropiate place with the purpose to remove mach/irqs.h later. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-04-17ARM: at91: pm select memory controler at runtimeJean-Christophe PLAGNIOL-VILLARD1-4/+8
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [nicolas.ferre@atmel.com: add cpuidle modification] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-15ARM: at91: add ram controller DT supportJean-Christophe PLAGNIOL-VILLARD1-13/+0
We can now drop the call to ioremap_registers() as we have the binding for the SDRAM/DDR Controller. Drop ioremap_registers() for sam9x5 too. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-23ARM: at91/PMC: make register base soc independentJean-Christophe PLAGNIOL-VILLARD1-4/+3
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reviewed-by: Ryan Mallon <rmallon@gmail.com>
2012-02-23ARM: at91/pm_slowclock: add runtime detection of memory contollerJean-Christophe PLAGNIOL-VILLARD1-3/+12
This will allow to have all SoC in one kernel image. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-23ARM: at91: make sdram/ddr register base soc independentJean-Christophe PLAGNIOL-VILLARD1-14/+13
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-23ARM: at91: move at91rm9200 sdramc defines to at91rm9200_sdramc.hJean-Christophe PLAGNIOL-VILLARD1-1/+1
This cleanup is done to allow to have multiple SoC in the same image. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-23ARM: at91/pm_slowclock: function slow_clock() accepts parametersJean-Christophe PLAGNIOL-VILLARD1-3/+17
Change slow_clock()/at91_slow_clock() prototype to accept the PMC base address and one or two RAM controller addresses by parameters. The r0, r1 and r2 registers are used differently and preserved during function call. Those values are defined in pm.c and slow_clock() function is called from there with its new parameters. This will allow to have a soc independent pm_slowclock. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Ached-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03ARM: at91: implement the standby function for pm/cpuidleDaniel Lezcano1-11/+1
This patch groups the self-refresh on/cpu_do_idle/self-refresh off into a single 'standby' function. The standby routine for rm9200 has been turned into an asm routine to have a better control of the self refresh and to prevent a memory access when running this code. Draining the write buffer is done automatically when switching for the self refresh on sam9, so the instruction is added to the rm9200 only. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03ARM: at91: remove wait_for_interrupt definitionDaniel Lezcano1-1/+1
All the "wait_for_interrupt" definition are aliases to cpu_do_idle. Only the rm9200 has an asm routine to switch to wfi. But the cpu_do_idle for this platform has exactly the same asm routine. arch/arm/mm/proc-arm920.S .. ENTRY(cpu_arm920_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt .. Then it is safe to invoke cpu_do_idle for this platform. As all the wait_for_interrupts are definition for cpu_do_idle, let's remove it and replace its invokation by cpu_do_idle. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03ARM: at91: code removal of CAP9 SoCJean-Christophe PLAGNIOL-VILLARD1-5/+0
Following removal announce and addition to feature-removal-schedule.txt, here is the actual source code deletion for Atmel CAP9 family. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-01-20ARM: at91: make rstc soc independentJean-Christophe PLAGNIOL-VILLARD1-7/+2
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-11-28ARM: at91: make aic soc independentJean-Christophe PLAGNIOL-VILLARD1-2/+2
on all at91 have the Advanced Interrupt Controller starts at address 0xfffff000 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-11-28ARM: at91: make shutdown controler soc independentJean-Christophe PLAGNIOL-VILLARD1-2/+5
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2011-08-08ARM: gpio: convert includes of mach/gpio.h and asm/gpio.h to linux/gpio.hRussell King1-1/+1
Convert arch/arm includes of mach/gpio.h and asm/gpio.h to linux/gpio.h before we start consolidating the individual platform implementations of the gpio header files. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-27atomic: use <linux/atomic.h>Arun Sharma1-1/+1
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16suspend: constify platform_suspend_opsLionel Debroux1-1/+1
While at it, fix two checkpatch errors. Several non-const struct instances constified by this patch were added after the introduction of platform_suspend_ops in checkpatch.pl's list of "should be const" structs (79404849e90a41ea2109bd0e2f7c7164b0c4ce73). Patch against mainline. Inspired by hunks of the grsecurity patch, updated for newer kernels. Signed-off-by: Lionel Debroux <lionel_debroux@yahoo.fr> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-26AT91: pm: make sure that r0 is 0 when dealing with cache operationsNicolas Ferre1-2/+7
When using CP15 cache operations (c7), we make sure that Rd (r0) is actually 0 as ARM 926 TRM is saying. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2010-10-26AT91: pm: use plain cpu_do_idle() for "wait for interrupt"Nicolas Ferre1-2/+4
For power management at91_pm_enter() routine, use the cpu_do_idle() for a rock solid "wait for interrupt" implementation. For AT91SAM9 ARM 926 based chips, we can exceed the cache line length as we can access RAM even while in self-refresh mode. We keep plain access to CP15 for at91rm9200 as this feature is not available: instructions have to be in a single cache line. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2009-11-11ARM: 5778/1: AT91: Add cpuidle supportAlbin Tonnerre1-58/+4
This patch adds the support for cpuidle on AT91 SoCs, taken from the cpuidle support in mach-kirkwood. cpuidle needs sdram_selfrefresh_enable and _disable, so move their definition to a separate header file instead of duplicating the code already used in pm.c. Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-02[ARM] 5570/1: at91: Support for at91sam9g10: core chip & board supportNicolas Ferre1-1/+2
From: Hong Xu <hong.xu@atmel.com> Here are the modification to at91sam9261 files dedicated to the support of at91sam9g10. This direction has been adopted to minimize code duplication. All at91sam9261 drivers are enabled in _devices and board- files. Modificaton to peripherals that support at91sam9g10 will be added in future patches. Signed-off-by: Hong Xu <hong.xu@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-04-02[ARM] 5441/1: Use pr_err on error paths in at91 pmRyan Mallon1-4/+4
Change pr_debug to pr_err on error paths in the AT91 power management code. All of the errors will result in the cpu not going into the suspend state. This patch makes it possible to identify problems with suspend when power management debugging is not enabled. Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-23[ARM] at91: fix for Atmel AT91 powersavingAndrei Birjukov1-1/+0
We've discovered that our AT91SAM9260 board consumed too much power when returning from a slowclock low-power mode. RAM self-refresh is enabled in a bootloader in our case, this is how we saw a difference. Estimated ca. 30mA more on 4V battery than the same state before powersaving. After a small research we found that there seems to be a bogus sdram_selfrefresh_disable() call at the end of at91_pm_enter() call, which overwrites the LPR register with uninitialized value. Please find the suggested patch attached. This patch fixes correct restoring of LPR register of the Atmel AT91 SDRAM controller when returning from a power saving mode. Signed-off-by: Andrei Birjukov <andrei.birjukov@artecdesign.ee> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-06[ARM] Convert asm/io.h to linux/io.hRussell King1-1/+1
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King1-8/+8
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07[ARM] Eliminate useless includes of asm/mach-types.hRussell King1-1/+0
There are 43 includes of asm/mach-types.h by files that don't reference anything from that file. Remove these unnecessary includes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-10[ARM] 5130/4: Support for the at91sam9g20sedji gaouaou1-1/+1
Support for the at91sam9g20 : Atmel 400Mhz ARM 926ej-s SOC. AT91sam9g20 is an evolution of the at91sam9260 with a faster clock speed. We created a new board for this device but based the chip support directly on 9260 files with little updates. Here is the chip page on Atmel wabsite: http://atmel.com/dyn/products/product_card.asp?part_id=4337 Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com> Signed-off-by: Justin Waters <justin.waters@timesys.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-28[ARM] 5021/1: at91: buildfix for sam9263 + PMDavid Brownell1-5/+9
Build fix for power management on at91sam9263: it has two memory controllers instead of just one, so it might have two banks of DRAM to put into selfrefresh mode. For now we continue to assume only the first bank is populated. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-04[ARM] 4907/1: [AT91] SAM9/CAP9 reset reasonAndrew Victor1-0/+74
The Reset controller on the SAM9/CAP9 processors will store the reason for the last system reset. On startup, display this information (wakeup signal, RTT alarm, watchdog reset, user reset, etc) Based on patch from David Brownell. Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-04[ARM] 4906/1: [AT91] SAM9/CAP9 basic power-managementAndrew Victor1-16/+75
Basic power-management (suspend-to-ram) support for Atmel SAM9 and CAP9 processors. Based on comments & patches from Anti Sullin and David Brownell. Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-02Suspend: Introduce begin() and end() callbacksRafael J. Wysocki1-4/+13
On ACPI systems the target state set by acpi_pm_set_target() is reset by acpi_pm_finish(), but that need not be called if the suspend fails.  All platforms that use the .set_target() global suspend callback are affected by analogous issues. For this reason, we need an additional global suspend callback that will reset the target state regardless of whether or not the suspend is successful.  Also, it is reasonable to rename the .set_target() callback, since it will be used for a different purpose on ACPI systems (due to ACPI 1.0x code ordering requirements). Introduce the global suspend callback .end() to be executed at the end of the suspend sequence and rename the .set_target() global suspend callback to .begin(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2008-01-26[ARM] 4764/1: [AT91] AT91CAP9 core supportAndrew Victor1-0/+5
Add support for Atmel's AT91CAP9 Customizable Microcontroller family. <http://www.atmel.com/products/AT91CAP/Default.asp> Signed-off-by: Stelian Pop <stelian@popies.net> Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-19PM: Rename struct pm_ops and related thingsRafael J. Wysocki1-2/+2
The name of 'struct pm_ops' suggests that it is related to the power management in general, but in fact it is only related to suspend.  Moreover, its name should indicate what this structure is used for, so it seems reasonable to change it to 'struct platform_suspend_ops'.  In that case, the name of the global variable of this type used by the PM core and the names of related functions should be changed accordingly. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19PM: Move definition of struct pm_ops to suspend.hRafael J. Wysocki1-2/+1
Move the definition of 'struct pm_ops' and related functions from <linux/pm.h> to <linux/suspend.h> . There are, at least, the following reasons to do that: * 'struct pm_ops' is specifically related to suspend and not to the power management in general. * As long as 'struct pm_ops' is defined in <linux/pm.h>, any modification of it causes the entire kernel to be recompiled, which is unnecessary and annoying. * Some suspend-related features are already defined in <linux/suspend.h>, so it is logical to move the definition of 'struct pm_ops' into there. * 'struct hibernation_ops', being the hibernation-related counterpart of 'struct pm_ops', is defined in <linux/suspend.h> . Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-01PM: introduce set_target method in pm_opsRafael J. Wysocki1-2/+2
Commit 52ade9b3b97fd3bea42842a056fe0786c28d0555 changed the suspend code ordering to execute pm_ops->prepare() after the device model per-device .suspend() calls in order to fix some ACPI-related issues. Unfortunately, it broke the at91 platform which assumed that pm_ops->prepare() would be called before suspending devices. at91 used pm_ops->prepare() to get notified of the target system sleep state, so that it could use this information while suspending devices. However, with the current suspend code ordering pm_ops->prepare() is called too late for this purpose. Thus, at91 needs an additional method in 'struct pm_ops' that will be used for notifying the platform of the target system sleep state. Moreover, in the future such a method will also be needed by ACPI. This patch adds the .set_target() method to 'struct pm_ops' and makes the suspend code call it, if implemented, before executing the device model per-device .suspend() calls. It also modifies the at91 code to use pm_ops->set_target() instead of pm_ops->prepare(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-03[ARM] 4419/1: AT91: SAM9 USB clocks check for suspendingAndrew Victor1-6/+5
When suspending to slow-clock mode, at91_pm_verify_clocks() is called to ensure that all the clocks are disabled or in the correct state. This patch replaces the "#warning TODO" messages for the SAM9 processors with the correct code. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-01rework pm_ops pm_disk_mode, kill misuseJohannes Berg1-1/+0
This patch series cleans up some misconceptions about pm_ops. Some users of the pm_ops structure attempt to use it to stop the user from entering suspend to disk, this, however, is not possible since the user can always use "shutdown" in /sys/power/disk and then the pm_ops are never invoked. Also, platforms that don't support suspend to disk simply should not allow configuring SOFTWARE_SUSPEND (read the help text on it, it only selects suspend to disk and nothing else, all the other stuff depends on PM). The pm_ops structure is actually intended to provide a way to enter platform-defined sleep states (currently supported states are "standby" and "mem" (suspend to ram)) and additionally (if SOFTWARE_SUSPEND is configured) allows a platform to support a platform specific way to enter low-power mode once everything has been saved to disk. This is currently only used by ACPI (S4). This patch: The pm_ops.pm_disk_mode is used in totally bogus ways since nobody really seems to understand what it actually does. This patch clarifies the pm_disk_mode description. It also removes all the arm and sh users that think they can veto suspend to disk via pm_ops; not so since the user can always do echo shutdown > /sys/power/disk, they need to find a better way involving Kconfig or such. ACPI is the only user left with a non-zero pm_disk_mode. The patch also sets the default mode to shutdown again, but when a new pm_ops is registered its pm_disk_mode is selected as default, that way the default stays for ACPI where it is apparently required. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: David Brownell <david-b@pacbell.net> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: <linux-pm@lists.linux-foundation.org> Cc: Len Brown <lenb@kernel.org> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-08[ARM] 4145/2: AT91: Add support for AT91SAM9263 processorAndrew Victor1-0/+2
Add support for the Atmel AT91SAM9263 processor. It is similar to the AT91SAM9260 but with more integrated peripherals, 5 GPIO banks, etc. Original patch from Nicolas Ferre. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-08[ARM] 4124/1: Rename mach-at91rm9200 and arch-at91rm9200 directoriesAndrew Victor1-0/+227
Now that Linux includes support for the Atmel AT91SAM9260 and AT91SAM9261 processors in addition to the original Atmel AT91RM9200 (with support for more AT91 processors pending), the "mach-at91rm9200" and "arch-at91rm9200" directories should be renamed to indicate their more generic nature. The following git commands should be run BEFORE applying this patch: git-mv arch/arm/mach-at91rm9200 arch/arm/mach-at91 git-mv include/asm-arm/arch-at91rm9200 include/asm-arm/arch-at91 Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>