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* ARM: tegra: hotplug: Include missing common.hThierry Reding2016-06-101-0/+1
| | | | | | | | Some of the functions implemented are flagged as not having a prototype defined when building with W=1. Include the header to avoid these build warnings. Signed-off-by: Thierry Reding <treding@nvidia.com>
* ARM: Remove __ref on hotplug cpu die pathStephen Boyd2015-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that __cpuinit has been removed, the __ref markings on these functions are useless. Remove them. This also reduces the size of the multi_v7_defconfig image: $ size before after text data bss dec hex filename 12683578 1470996 348904 14503478 dd4e36 before 12683274 1470996 348904 14503174 dd4d06 after presumably because now we don't have to jump to code in the .ref.text section and/or the noinline marking is removed. Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: <linux-omap@vger.kernel.org> Cc: <linux-arm-msm@vger.kernel.org> Cc: <spear-devel@list.st.com> Cc: <linux-tegra@vger.kernel.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Barry Song <baohua@kernel.org> Acked-by: Andy Gross <agross@codeaurora.org> Acked-by: Viresh Kumar <vireshk@kernel.org> Acked-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Olof Johansson <olof@lixom.net>
* ARM: tegra: Setup CPU hotplug in a pure initcallThierry Reding2014-07-171-2/+14
| | | | | | | | | | | | CPU hotplug support doesn't have to be set up until fairly late in the boot process, so it can be done in a regular initcall. To make sure that we don't miss any ordering problems in the future, output a warning if any of the functions are called before initialization has completed. This is part of untangling the boot order dependencies on Tegra so that more code can be shared between 32-bit and 64-bit ARM. Signed-off-by: Thierry Reding <treding@nvidia.com>
* ARM: tegra: Use a function to get the chip IDThierry Reding2014-07-171-5/+6
| | | | | | | | | | | Instead of using a simple variable access to get at the Tegra chip ID, use a function so that we can run additional code. This can be used to determine where the chip ID is being accessed without being available. That in turn will be handy for resolving boot sequence dependencies in order to convert more code to regular initcalls rather than a sequence fixed by Tegra SoC setup code. Signed-off-by: Thierry Reding <treding@nvidia.com>
* ARM: tegra: Sort includes alphabeticallyThierry Reding2014-07-171-1/+2
| | | | | | | | If these aren't sorted alphabetically, then the logical choice is to append new ones, however that creates a lot of potential for conflicts because every change will then add new includes in the same location. Signed-off-by: Thierry Reding <treding@nvidia.com>
* ARM: tegra: CPU hotplug support for Tegra124Joseph Lo2013-10-181-0/+2
| | | | | | | | The procedure of CPU hotplug for Tegra124 is same with Tegra114. We re-use the same function with it. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra: add a flag for tegra_disable_clean_inv_dcache to do LoUIS or ALLJoseph Lo2013-07-191-1/+1
| | | | | | | | | | | Adding a flag for tegra_disable_clean_inv_dcache to flush cache as LoUIS or ALL. After this patch, the v7_flush_dcache_louis is used for CPU hotplug and CPU suspend in CPU power down (e.g. CPU idle power-down mode) case. And the v7_flush_dcache_all is used for CPU cluster power down (e.g. suspend to LP2 mode). Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* Revert "ARM: tegra: add cpu_disable for hotplug"Joseph Lo2013-07-191-11/+0
| | | | | | | | | | | This reverts commit 510bb59 "ARM: tegra: add cpu_disable for hotplug". The Tegra114 support CPU0 hotplug function in HW physically, but it needs other software to make it work normally after we add CPU idle power down mode support. So remove them for now. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra: add cpu_disable for hotplugJoseph Lo2013-05-281-0/+11
| | | | | | | | | The Tegra114 could hotplug the CPU0, but the common cpu_disable didn't support that. Adding a Tegra specific cpu_disable function for it. Signed-off-by: Joseph Lo <josephl@nvidia.com> [swarren: adjusted the switch statement to be future-proof] Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra114: add CPU hotplug supportJoseph Lo2013-05-221-0/+2
| | | | | | | | | | The Tegra114 is a quad cores SoC. Each core can be hotplugged including CPU0. The hotplug sequence can be controlled by setting event trigger in flow controller. Then the flow controller will take care all the power sequence that include CPU up and down. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds2013-05-031-10/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: "The major items included in here are: - MCPM, multi-cluster power management, part of the infrastructure required for ARMs big.LITTLE support. - A rework of the ARM KVM code to allow re-use by ARM64. - Error handling cleanups of the IS_ERR_OR_NULL() madness and fixes of that stuff for arch/arm - Preparatory patches for Cortex-M3 support from Uwe Kleine-König. There is also a set of three patches in here from Hugh/Catalin to address freeing of inappropriate page tables on LPAE. You already have these from akpm, but they were already part of my tree at the time he sent them, so unfortunately they'll end up with duplicate commits" * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (77 commits) ARM: EXYNOS: remove unnecessary use of IS_ERR_VALUE() ARM: IMX: remove unnecessary use of IS_ERR_VALUE() ARM: OMAP: use consistent error checking ARM: cleanup: OMAP hwmod error checking ARM: 7709/1: mcpm: Add explicit AFLAGS to support v6/v7 multiplatform kernels ARM: 7700/2: Make cpu_init() notrace ARM: 7702/1: Set the page table freeing ceiling to TASK_SIZE ARM: 7701/1: mm: Allow arch code to control the user page table ceiling ARM: 7703/1: Disable preemption in broadcast_tlb*_a15_erratum() ARM: mcpm: provide an interface to set the SMP ops at run time ARM: mcpm: generic SMP secondary bringup and hotplug support ARM: mcpm_head.S: vlock-based first man election ARM: mcpm: Add baremetal voting mutexes ARM: mcpm: introduce helpers for platform coherency exit/setup ARM: mcpm: introduce the CPU/cluster power API ARM: multi-cluster PM: secondary kernel entry code ARM: cacheflush: add synchronization helpers for mixed cache state accesses ARM: cpu hotplug: remove majority of cache flushing from platforms ARM: smp: flush L1 cache in cpu_die() ARM: tegra: remove tegra specific cpu_disable() ...
| * ARM: cpu hotplug: remove majority of cache flushing from platformsRussell King2013-04-181-1/+0
| | | | | | | | | | | | | | Remove the majority of cache flushing calls from the individual platform files. This is now handled by the core code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * ARM: tegra: remove tegra specific cpu_disable()Russell King2013-04-181-9/+0
| | | | | | | | | | | | | | The tegra cpu_disable() function is the same as the generic version in arch/arm/kernel/smp.c. Therefore, it can be removed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | ARM: tegra: Unify tegra{20,30,114}_init_early()Hiroshi Doyu2013-03-111-14/+9
|/ | | | | | | | Refactored tegra{20,30,114}_init_early() so that we have the unified tegra_init_early(). Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.hPrashant Gaikwad2013-01-281-1/+1
| | | | | | | | tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra. Move the tegra_cpu_car_ops to include/linux/clk/tegra.h. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra: moving the clock gating procedure to tegra_cpu_killJoseph Lo2013-01-281-6/+11
| | | | | | | | | | | The tegra_cpu_die was be executed by the CPU itslf. So the clock gating procedure won't be executed after the CPU hardware shutdown code. Moving the clock gating procedure to tegra_cpu_kill that will be run by another CPU after the CPU died. Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: tegra: update the cache maintenance order for CPU shutdownJoseph Lo2013-01-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | Updating the cache maintenance order before CPU shutdown when doing CPU hotplug. The old order: * clean L1 by flush_cache_all * exit SMP * CPU shutdown Adapt to: * disable L1 data cache by clear C bit * clean L1 by v7_flush_dcache_louis * exit SMP * CPU shutdown For CPU hotplug case, it's no need to do "flush_cache_all". And we should disable L1 data cache before clean L1 data cache. Then leaving the SMP coherency. Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* Merge branch 'multiplatform/smp_ops' into next/multiplatformOlof Johansson2012-09-221-7/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * multiplatform/smp_ops: ARM: consolidate pen_release instead of having per platform definitions ARM: smp: Make SMP operations mandatory ARM: SoC: convert spear13xx to SMP operations ARM: SoC: convert imx6q to SMP operations ARM: SoC: convert highbank to SMP operations ARM: SoC: convert shmobile SMP to SMP operations ARM: SoC: convert ux500 to SMP operations ARM: SoC: convert MSM to SMP operations ARM: SoC: convert Exynos4 to SMP operations ARM: SoC: convert Tegra to SMP operations ARM: SoC: convert OMAP4 to SMP operations ARM: SoC: convert VExpress/RealView to SMP operations ARM: SoC: add per-platform SMP operations Conflicts due to file moves or removals in: arch/arm/mach-msm/board-msm8960.c arch/arm/mach-msm/board-msm8x60.c arch/arm/mach-tegra/board-harmony.c arch/arm/mach-tegra/board-trimslice.c Conflicts due to board file cleanup: arch/arm/mach-tegra/board-paz00.c Conflicts due to cpu hotplug addition: arch/arm/mach-tegra/hotplug.c Signed-off-by: Olof Johansson <olof@lixom.net>
| * ARM: SoC: convert Tegra to SMP operationsMarc Zyngier2012-09-131-15/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Convert Tegra to use struct smp_operations to provide its SMP and CPU hotplug operations. Tested on Harmony. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | ARM: tegra20: add CPU hotplug supportJoseph Lo2012-09-131-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Hotplug function put CPU in offline or online mode at runtime. When the CPU been put into offline, it was been clock gated. The offline CPU can be power gated, when the remaining CPU goes into LP2. Based on the worked by: Colin Cross <ccross@android.com> Gary King <gking@nvidia.com> Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* | ARM: tegra30: add CPU hotplug supportJoseph Lo2012-09-131-86/+24
|/ | | | | | | | | | | | | | Hotplug function put CPUs in offline or online state at runtime. When the CPU been put in the offline state, it was been clock and power gated. Except primary CPU other CPUs can be hotplugged. Based on the work by: Scott Williams <scwilliams@nvidia.com> Colin Cross <ccross@android.com> Gary King <gking@nvidia.com> Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* ARM: move CP15 definitions to separate header fileRussell King2012-03-281-0/+1
| | | | | | | | | | | | | | | Avoid namespace conflicts with drivers over the CP15 definitions by moving CP15 related prototypes and definitions to a private header file. Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> [Tegra] Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> [EP93xx] Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com>
* ARM: fix wrongly patched constantsRussell King2011-01-141-2/+2
| | | | | | | | e3d9c625 (ARM: CPU hotplug: fix hard-coded control register constants) changed the wrong constants in the hotplug assembly code. Fix this. Reported-by: viresh kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: CPU hotplug: fix hard-coded control register constantsRussell King2010-12-201-4/+4
| | | | | | | Use the definition we've provided in asm/system.h rather than numeric constants. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: CPU hotplug: fix reporting of spurious wakeupsRussell King2010-12-201-9/+11
| | | | | | | | | | | | The original scheme for reporting spurious wakeups was broken - it tried to use printk() from a context which wasn't coherent with the other CPUs, which risks corrupting the printk() data. Fix this by noting the number spurious wakeups, and only report them when we are properly woken - when we will be coherent with the rest of the system. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: CPU hotplug: remove bug checks in platform_cpu_die()Russell King2010-12-201-10/+0
| | | | | | | | | platform_cpu_die() is entered from the CPU's own idle thread, which can not be migrated to other CPUs. Moreover, the 'cpu' argument comes from the thread info, which will always be the 'current' CPU. So remove this useless bug check. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: CPU hotplug: move cpu_killed completion to core codeRussell King2010-12-201-7/+1
| | | | | | | | | We always need to wait for the dying CPU to reach a safe state before taking it down, irrespective of the requirements of the platform. Move the completion code into the ARM SMP hotplug code rather than having each platform re-implement this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] tegra: SMP supportColin Cross2010-08-051-0/+140
Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
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