06 Apr, 2018
1 commit
-
Pull ARM SoC platform updates from Arnd Bergmann:
"This release brings up a new platform based on the old ARM9 core: the
Nuvoton NPCM is used as a baseboard management controller, competing
with the better known ASpeed AST2xx series.Another important change is the addition of ARMv7-A based chips in
mach-stm32. The older parts in this platform are ARMv7-M based
microcontrollers, now they are expanding to general-purpose workloads.The other changes are the usual defconfig updates to enable additional
drivers, lesser bugfixes. The largest updates as often are the ongoing
OMAP cleanups, but we also have a number of changes for the older PXA
and davinci platforms this time.For the Renesas shmobile/r-car platform, some new infrastructure is
needed to make the watchdog work correctly.Supporting Multiprocessing on Allwinner A80 required a significant
amount of new code, but is not doing anything unexpected"* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (179 commits)
arm: npcm: modify configuration for the NPCM7xx BMC.
MAINTAINERS: update entry for ARM/berlin
ARM: omap2: fix am43xx build without L2X0
ARM: davinci: da8xx: simplify CFGCHIP regmap_config
ARM: davinci: da8xx: fix oops in USB PHY driver due to stack allocated platform_data
ARM: multi_v7_defconfig: add NXP FlexCAN IP support
ARM: multi_v7_defconfig: enable thermal driver for i.MX devices
ARM: multi_v7_defconfig: add RN5T618 PMIC family support
ARM: multi_v7_defconfig: add NXP graphics drivers
ARM: multi_v7_defconfig: add GPMI NAND controller support
ARM: multi_v7_defconfig: add OCOTP driver for NXP SoCs
ARM: multi_v7_defconfig: configure I2C driver built-in
arm64: defconfig: add CONFIG_UNIPHIER_THERMAL and CONFIG_SNI_AVE
ARM: imx: fix imx6sll-only build
ARM: imx: select ARM_CPU_SUSPEND for CPU_IDLE as well
ARM: mxs_defconfig: Re-sync defconfig
ARM: imx_v4_v5_defconfig: Use the generic fsl-asoc-card driver
ARM: imx_v4_v5_defconfig: Re-sync defconfig
arm64: defconfig: enable stmmac ethernet to defconfig
ARM: EXYNOS: Simplify code in coupled CPU idle hot path
...
01 Mar, 2018
1 commit
-
As dmtimer no longer exports functions, make those previously
exported static (this requires few functions to be moved around
as their prototypes were deleted).Signed-off-by: Ladislav Michl
Signed-off-by: Tony Lindgren
23 Feb, 2018
3 commits
-
Now that arch/metag/ has been removed, remove the metag generic
per-thread timer driver. It is of no value without the architecture
code.Signed-off-by: James Hogan
Acked-by: Daniel Lezcano
Cc: Thomas Gleixner
Cc: linux-metag@vger.kernel.org -
Replace architecture specific guard with clocksource guard.
Signed-off-by: Keerthy
Signed-off-by: Tony Lindgren -
The header file is currently under plat-omap directory
under arch/omap. Move this out to an accessible place.No Code changes done to the header file and renamed to timer-ti-dm.h.
Signed-off-by: Keerthy
Reviewed-by: Sebastian Reichel
Tested-by: Ladislav Michl
Signed-off-by: Tony Lindgren
16 Nov, 2017
1 commit
-
Pull arm64 updates from Will Deacon:
"The big highlight is support for the Scalable Vector Extension (SVE)
which required extensive ABI work to ensure we don't break existing
applications by blowing away their signal stack with the rather large
new vector context ( of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (97 commits)
arm64: Make ARMV8_DEPRECATED depend on SYSCTL
arm64: Implement __lshrti3 library function
arm64: support __int128 on gcc 5+
arm64/sve: Add documentation
arm64/sve: Detect SVE and activate runtime support
arm64/sve: KVM: Hide SVE from CPU features exposed to guests
arm64/sve: KVM: Treat guest SVE use as undefined instruction execution
arm64/sve: KVM: Prevent guests from using SVE
arm64/sve: Add sysctl to set the default vector length for new processes
arm64/sve: Add prctl controls for userspace vector length management
arm64/sve: ptrace and ELF coredump support
arm64/sve: Preserve SVE registers around EFI runtime service calls
arm64/sve: Preserve SVE registers around kernel-mode NEON use
arm64/sve: Probe SVE capabilities and usable vector lengths
arm64: cpufeature: Move sys_caps_initialised declarations
arm64/sve: Backend logic for setting the vector length
arm64/sve: Signal handling support
arm64/sve: Support vector length resetting for new processes
arm64/sve: Core task context handling
arm64/sve: Low-level CPU setup
...
02 Nov, 2017
1 commit
-
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
14 Oct, 2017
2 commits
-
The current delay implementation uses the yield instruction, which is a
hint that it is beneficial to schedule another thread. As this is a hint,
it may be implemented as a NOP, causing all delays to be busy loops. This
is the case for many existing CPUs.Taking advantage of the generic timer sending periodic events to all
cores, we can use WFE during delays to reduce power consumption. This is
beneficial only for delays longer than the period of the timer event
stream.If timer event stream is not enabled, delays will behave as yield/busy
loops.Signed-off-by: Julien Thierry
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Mark Rutland
Signed-off-by: Will Deacon -
The arch timer configuration for a CPU might get reset after suspending
said CPU.In order to reliably use the event stream in the kernel (e.g. for delays),
we keep track of the state where we can safely consider the event stream as
properly configured. After writing to cntkctl, we issue an ISB to ensure
that subsequent delay loops can rely on the event stream being enabled.Signed-off-by: Julien Thierry
Acked-by: Mark Rutland
Cc: Marc Zyngier
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Signed-off-by: Will Deacon
19 Apr, 2017
1 commit
-
In preparation for ACPI GTDT support, this patch adds structs to
describe the MMIO timers indepedent of the firmware interface.Subsequent patches will use these to split the FW/HW probing logic, so
that the HW probing logic can be shared by ACPI and DT.Signed-off-by: Fu Wei
Reviewed-by: Hanjun Guo
Signed-off-by: Mark Rutland
10 Apr, 2017
2 commits
-
This patch add a new enum "arch_timer_spi_nr" and use it in the driver.
Just for code's readability, no functional change.Signed-off-by: Fu Wei
Acked-by: Mark Rutland
Signed-off-by: Mark Rutland -
To support the arm_arch_timer via ACPI we need to share defines and enums
between the driver and the ACPI parser code.
So we split out the relevant defines and enums into arm_arch_timer.h.No functional change.
Signed-off-by: Fu Wei
Acked-by: Mark Rutland
Tested-by: Xiongfeng Wang
Signed-off-by: Mark Rutland
18 Oct, 2016
1 commit
-
As both pxa and sa1100 provide a clock to the timer, the rate can be
inferred from the clock rather than hard encoded in a functional call.This patch changes the pxa timer to have a mandatory clock which is used
as the timer rate.Signed-off-by: Robert Jarzmik
Acked-by: Daniel Lezcano
Acked-by: Russell King
28 Jun, 2016
1 commit
-
The init functions do not return any error. They behave as the following:
- panic, thus leading to a kernel crash while another timer may work and
make the system boot up correctlyor
- print an error and let the caller unaware if the state of the system
Change that by converting the init functions to return an error conforming
to the CLOCKSOURCE_OF_RET prototype.Proper error handling (rollback, errno value) will be changed later case
by case, thus this change just return back an error or success in the init
function.Signed-off-by: Daniel Lezcano
03 May, 2016
3 commits
-
The only call of arch_timer_get_timecounter (in KVM) has been removed.
Signed-off-by: Julien Grall
Acked-by: Christoffer Dall
Signed-off-by: Christoffer Dall -
Currently, the firmware table is parsed by the virtual timer code in
order to retrieve the virtual timer interrupt. However, this is already
done by the arch timer driver.To avoid code duplication, extend arch_timer_kvm_info to get the virtual
IRQ.Note that the KVM code will be modified in a subsequent patch.
Signed-off-by: Julien Grall
Acked-by: Christoffer Dall
Signed-off-by: Christoffer Dall -
Introduce a structure which are filled up by the arch timer driver and
used by the virtual timer in KVM.The first member of this structure will be the timecounter. More members
will be added later.A stub for the new helper isn't introduced because KVM requires the arch
timer for both ARM64 and ARM32.The function arch_timer_get_timecounter is kept for the time being and
will be dropped in a subsequent patch.Signed-off-by: Julien Grall
Acked-by: Christoffer Dall
Signed-off-by: Christoffer Dall
14 Dec, 2015
1 commit
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Implement the timer save restore as a direct translation of
the assembly code version.Signed-off-by: Marc Zyngier
02 Jun, 2015
1 commit
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The ARM Dual-Timer SP804 module is peripheral found not only on ARM32
platforms but also on ARM64 platforms.This patch moves the driver out of arch/arm to driver/clocksource
so that it can be used on ARM64 platforms also.Cc: Daniel Lezcano
Cc: Rob Herring
Cc: Arnd Bergmann
Cc: Catalin Marinas
Cc: Olof Johansson
Acked-by: Thomas Gleixner
Signed-off-by: Sudeep Holla
Signed-off-by: Russell King
31 Dec, 2014
1 commit
-
The timecounter code has almost nothing to do with the clocksource
code. Let it live in its own file. This will help isolate the
timecounter users from the clocksource users in the source tree.Signed-off-by: Richard Cochran
Acked-by: Jeff Kirsher
Signed-off-by: David S. Miller
23 Jul, 2014
1 commit
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As clocksource pxa_timer was moved to clocksource framework, the
pxa_timer initialization needs to be a bit amended, to pass the
necessary informations to clocksource, ie :
- the timer interrupt (mach specific)
- the timer registers base (ditto)
- the timer clockrateSigned-off-by: Robert Jarzmik
Signed-off-by: Daniel Lezcano
26 Sep, 2013
2 commits
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The ARM architected timer can generate events (used for waking up
CPUs executing the wfe instruction) at a frequency represented as a
power-of-2 divisor of the clock rate.An event stream might be used:
- To implement wfe-based timeouts for userspace locking implementations.
- To impose a timeout on a wfe for safeguarding against any programming
error in case an expected event is not generated.This patch computes the event stream frequency aiming for a period
of 100us between events. It uses ARM/ARM64 specific backends to configure
and enable the event stream.Cc: Lorenzo Pieralisi
Reviewed-by: Catalin Marinas
Acked-by: Olof Johansson
Signed-off-by: Will Deacon
[sudeep: moving ARM/ARM64 changes into separate patches
and adding Kconfig option]
Signed-off-by: Sudeep KarkadaNagesha -
Add macros to describe the bitfields in the ARM architected timer
control register to make code easy to understand.Reviewed-by: Lorenzo Pieralisi
Reviewed-by: Will Deacon
Acked-by: Catalin Marinas
Acked-by: Olof Johansson
Signed-off-by: Sudeep KarkadaNagesha
07 Sep, 2013
1 commit
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Pull ARM SoC cleanups from Olof Johansson:
"This branch contains code cleanups, moves and removals for 3.12.There's a large number of various cleanups, and a nice net removal of
13500 lines of code.Highlights worth mentioning are:
- A series of patches from Stephen Boyd removing the ARM local timer
API.
- Move of Qualcomm MSM IOMMU code to drivers/iommu.
- Samsung PWM driver cleanups from Tomasz Figa, removing legacy PWM
driver and switching over to the drivers/pwm one.
- Removal of some unusued auto-generated headers for OMAP2+ (PRM/CM).There's also a move of a header file out of include/linux/i2c/ to
platform_data, where it really belongs. It touches mostly ARM
platform code for include changes so we took it through our tree"* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: OMAP2+: Add back the define for AM33XX_RST_GLOBAL_WARM_SW_MASK
gpio: (gpio-pca953x) move header to linux/platform_data/
arm: zynq: hotplug: Remove unreachable code
ARM: SAMSUNG: Remove unnecessary exynos4_default_sdhci*()
tegra: simplify use of devm_ioremap_resource
ARM: SAMSUNG: Remove plat/regs-timer.h header
ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header
ARM: SAMSUNG: Remove pwm-clock infrastructure
ARM: SAMSUNG: Remove old PWM timer platform devices
pwm: Remove superseded pwm-samsung-legacy driver
ARM: SAMSUNG: Modify board files to use new PWM platform device
ARM: SAMSUNG: Rework private data handling in dev-backlight
pwm: Add new pwm-samsung driver
ARM: mach-mvebu: remove redundant DT parsing and validation
ARM: msm: Only compile io.c on platforms that use it
iommu/msm: Move mach includes to iommu directory
ARM: msm: Remove devices-iommu.c
ARM: msm: Move mach/board.h contents to common.h
ARM: msm: Migrate msm_timer to CLOCKSOURCE_OF_DECLARE
ARM: msm: Remove TMR and TMR0 static mappings
...
13 Aug, 2013
1 commit
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This patch introduces new Samsung PWM driver, which is completely
rewritten to be multiplatform- and DeviceTree-aware.In addition, remaining problems of old driver are fixed, such as:
- proper handling of hardware variants,
- synchronization on SMP systems,
- handling of boundary parameter values,
- hardware sharing with PWM clocksource driver,
- undefined state of PWM output after stopping PWM channel.Signed-off-by: Tomasz Figa
Reviewed-by: Sylwester Nawrocki
Tested-by: Heiko Stuebner
Tested-by: Mark Brown
Tested-by: Sylwester Nawrocki
Acked-by: Arnd Bergmann
Acked-by: Thierry Reding
01 Aug, 2013
2 commits
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Add support for the memory mapped timers by filling in the
read/write functions and adding some parsing code. Note that we
only register one clocksource, preferring the cp15 based
clocksource over the mmio one.To keep things simple we register one global clockevent. This
covers the case of UP and SMP systems with only mmio hardware and
systems where the memory mapped timers are used as the broadcast
timer in low power modes.The DT binding allows for per-CPU memory mapped timers in case we
want to support that in the future, but the code isn't added
here. We also don't do much for hypervisor support, although it
should be possible to support it by searching for at least two
frames where one frame has the virtual capability and then
updating KVM timers to support it.Cc: Mark Rutland
Cc: Marc Zyngier
Cc: Rob Herring
Signed-off-by: Stephen Boyd
Signed-off-by: Daniel Lezcano
Acked-by: Mark Rutland -
Using an enum for the register we wish to access allows newer
compilers to determine if we've forgotten a case in our switch
statement. This allows us to remove the BUILD_BUG() instances in
the arm64 port, avoiding problems where optimizations may not
happen.To try and force better code generation we're currently marking
the accessor functions as inline, but newer compilers can ignore
the inline keyword unless it's marked __always_inline. Luckily on
arm and arm64 inline is __always_inline, but let's make
everything __always_inline to be explicit.Suggested-by: Thomas Gleixner
Cc: Thomas Gleixner
Cc: Mark Rutland
Cc: Marc Zyngier
Signed-off-by: Stephen Boyd
Signed-off-by: Daniel Lezcano
Acked-by: Mark Rutland
07 Jun, 2013
1 commit
-
Switching between reading the virtual or physical counters is
problematic, as some core code wants a view of time before we're fully
set up. Using a function pointer and switching the source after the
first read can make time appear to go backwards, and having a check in
the read function is an unfortunate block on what we want to be a fast
path.Instead, this patch makes us always use the virtual counters. If we're a
guest, or don't have hyp mode, we'll use the virtual timers, and as such
don't care about CNTVOFF as long as it doesn't change in such a way as
to make time appear to travel backwards. As the guest will use the
virtual timers, a (potential) KVM host must use the physical timers
(which can wake up the host even if they fire while a guest is
executing), and hence a host must have CNTVOFF set to zero so as to have
a consistent view of time between the physical timers and virtual
counters.Signed-off-by: Mark Rutland
Acked-by: Catalin Marinas
Acked-by: Marc Zyngier
Acked-by: Santosh Shilimkar
Cc: Rob Herring
08 May, 2013
1 commit
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Pull late ARM Exynos multiplatform changes from Arnd Bergmann:
"These continue the multiplatform support for exynos, adding support
for building most of the essential drivers (clocksource, clk, irqchip)
when combined with other platforms. As a result, it should become
really easy to add full multiplatform exynos support in 3.11, although
we don't yet enable it for 3.10.The changes were not included in the earlier multiplatform series in
order to avoid clashes with the other Exynos updates.This also includes work from Tomasz Figa to fix the pwm clocksource
code on Exynos, which is not strictly required for multiplatform, but
related to the other patches in this set and needed as a bug fix for
at least one board."* tag 'multiplatform-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (22 commits)
ARM: dts: exynops4210: really add universal_c210 dts
ARM: dts: exynos4210: Add basic dts file for universal_c210 board
ARM: dts: exynos4: Add node for PWM device
ARM: SAMSUNG: Do not register legacy timer interrupts on Exynos
clocksource: samsung_pwm_timer: Work around rounding errors in clockevents core
clocksource: samsung_pwm_timer: Correct programming of clock events
clocksource: samsung_pwm_timer: Use proper clockevents max_delta
clocksource: samsung_pwm_timer: Add support for non-DT platforms
clocksource: samsung_pwm_timer: Drop unused samsung_pwm struct
clocksource: samsung_pwm_timer: Keep all driver data in a structure
clocksource: samsung_pwm_timer: Make PWM spinlock global
clocksource: samsung_pwm_timer: Let platforms select the driver
Documentation: Add device tree bindings for Samsung PWM timers
clocksource: add samsung pwm timer driver
irqchip: exynos: look up irq using irq_find_mapping
irqchip: exynos: pass irq_base from platform
irqchip: exynos: localize irq lookup for ATAGS
irqchip: exynos: allocate combiner_data dynamically
irqchip: exynos: pass max combiner number to combiner_init
ARM: exynos: add missing properties for combiner IRQs
...
29 Apr, 2013
3 commits
-
This patch extends the driver to support platforms that still use legacy
ATAGS-based boot, without device tree, by providing an exported function
that can be used from platform code to initialize the clocksource.Signed-off-by: Tomasz Figa
Signed-off-by: Kyungmin Park
Reviewed-by: Arnd Bergmann
Acked-by: Kukjin Kim
Signed-off-by: Olof Johansson -
This patch removes the unused samsung_pwm struct from public header.
Signed-off-by: Tomasz Figa
Signed-off-by: Kyungmin Park
Reviewed-by: Arnd Bergmann
Acked-by: Kukjin Kim
Signed-off-by: Olof Johansson -
This patch makes the PWM spinlock global and exports it to allow using
it in Samsung PWM driver (will be reworked to use proper synchronization
in further patches).Signed-off-by: Tomasz Figa
Signed-off-by: Kyungmin Park
Reviewed-by: Arnd Bergmann
Acked-by: Kukjin Kim
Signed-off-by: Olof Johansson
21 Apr, 2013
1 commit
-
This adds a new clocksource driver for the PWM timer that is
present in most Samsung SoCs, based on the existing driver in
arch/arm/plat-samsung/samsung-time.c and many changes implemented by
Tomasz Figa.Originally, the conversion of all Samsung machines to the new driver was
planned for 3.10, but that work ended up being too late and too invasive
just before the merge window.Unfortunately, other changes in the Exynos platform resulted in some
Exynos4 setups, particularly the Universal C210 board to be broken. In
order to fix that with minimum risk, so we now leave the existing pwm
clocksource driver in place for all older platforms and use the new
driver only for device tree enabled boards. This way, we can get the
broken machines running again using DT descriptions.All clocksource changes were implemented by Tomasz, while the DT
registration was rewritten by Arnd.Signed-off-by: Arnd Bergmann
Cc: Tomasz Figa
Cc: Kyungmin Park
Cc: Kukjin Kim
Cc: Ben Dooks
Cc: John Stultz
Cc: Thomas Gleixner
12 Apr, 2013
1 commit
-
This converts arm and arm64 to use CLKSRC_OF DT based initialization for
the arch timer. A new function arch_timer_arch_init is added to allow for
arch specific setup.This has a side effect of enabling sched_clock on omap5 and exynos5. There
should not be any reason not to use the arch timers for sched_clock.Signed-off-by: Rob Herring
Cc: Russell King
Cc: Kukjin Kim
Cc: Tony Lindgren
Cc: Simon Horman
Cc: Magnus Damm
Cc: Catalin Marinas
Cc: Will Deacon
Cc: John Stultz
Cc: Thomas Gleixner
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Acked-by: Santosh Shilimkar
04 Mar, 2013
1 commit
-
Pull new ImgTec Meta architecture from James Hogan:
"This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of
metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()"* tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits)
metag: Provide dma_get_sgtable()
metag: prom.h: remove declaration of metag_dt_memblock_reserve()
metag: copy devicetree to non-init memory
metag: cleanup metag_ksyms.c includes
metag: move mm/init.c exports out of metag_ksyms.c
metag: move usercopy.c exports out of metag_ksyms.c
metag: move setup.c exports out of metag_ksyms.c
metag: move kick.c exports out of metag_ksyms.c
metag: move traps.c exports out of metag_ksyms.c
metag: move irq enable out of irqflags.h on SMP
genksyms: fix metag symbol prefix on crc symbols
metag: hugetlb: convert to vm_unmapped_area()
metag: export clear_page and copy_page
metag: export metag_code_cache_flush_all
metag: protect more non-MMU memory regions
metag: make TXPRIVEXT bits explicit
metag: kernel/setup.c: sort includes
perf: Enable building perf tools for Meta
metag: add boot time LNKGET/LNKSET check
metag: add __init to metag_cache_probe()
...
03 Mar, 2013
1 commit
-
Add time keeping code for metag. Meta hardware threads have 2 timers.
The background timer (TXTIMER) is used as a free-running time base, and
the interrupt timer (TXTIMERI) is used for the timer interrupt. Both
counters traditionally count at approximately 1MHz.Signed-off-by: James Hogan
Cc: John Stultz
Cc: Thomas Gleixner
12 Feb, 2013
1 commit
-
Fixes:
In file included from arch/arm/include/asm/arch_timer.h:10:0,
from arch/arm/mach-shmobile/timer.c:23:
include/clocksource/arm_arch_timer.h:56:28: warning: 'arch_timer_get_timecounter' defined but not used [-Wunused-function]Signed-off-by: Olof Johansson
31 Jan, 2013
2 commits
-
The arch_timer driver supports a superset of the functionality of the
arm_generic driver, and is not tied to a particular arch.This patch moves arm64 to use the arch_timer driver, gaining additional
functionality in doing so, and removes the (now unused) arm_generic
driver. Timer-related hooks specific to arm64 are moved into
arch/arm64/kernel/time.c.Signed-off-by: Mark Rutland
Acked-by: Catalin Marinas
Acked-by: Marc Zyngier
Acked-by: Santosh Shilimkar -
The core functionality of the arch_timer driver is not directly tied to
anything under arch/arm, and can be split out.This patch factors out the core of the arch_timer driver, so it can be
shared with other architectures. A couple of functions are added so
that architecture-specific code can interact with the driver without
needing to touch its internals.The ARM_ARCH_TIMER config variable is moved out to
drivers/clocksource/Kconfig, existing uses in arch/arm are replaced with
HAVE_ARM_ARCH_TIMER, which selects it.Signed-off-by: Mark Rutland
Acked-by: Catalin Marinas
Acked-by: Marc Zyngier
17 Sep, 2012
1 commit
-
This patch adds support for the ARM generic timers with A64 instructions
for accessing the timer registers. It uses the physical counter as the
clock source and the virtual counter as sched_clock.The timer frequency can be specified via DT or read from the CNTFRQ_EL0
register. The physical counter is also accessible from user space
allowing fast gettimeofday() implementation.Signed-off-by: Marc Zyngier
Signed-off-by: Will Deacon
Signed-off-by: Catalin Marinas
Acked-by: Tony Lindgren
Acked-by: Nicolas Pitre
Acked-by: Olof Johansson
Acked-by: Santosh Shilimkar
Acked-by: Arnd Bergmann