linux-stable.git/drivers/clocksource/Kconfig, branch v4.6

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15T19:13:56+00:00

Pull timer updates from Thomas Gleixner:
 "The timer department delivers this time:

   - Support for cross clock domain timestamps in the core code plus a
     first user.  That allows more precise timestamping for PTP and
     later for audio and other peripherals.

     The ptp/e1000e patches have been acked by the relevant maintainers
     and are carried in the timer tree to avoid merge ordering issues.

   - Support for unregistering the current clocksource watchdog.  That
     lifts a limitation for switching clocksources which has been there
     from day 1

   - The usual pile of fixes and updates to the core and the drivers.
     Nothing outstanding and exciting"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
  time/timekeeping: Work around false positive GCC warning
  e1000e: Adds hardware supported cross timestamp on e1000e nic
  ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestamping
  x86/tsc: Always Running Timer (ART) correlated clocksource
  hrtimer: Revert CLOCK_MONOTONIC_RAW support
  time: Add history to cross timestamp interface supporting slower devices
  time: Add driver cross timestamp interface for higher precision time synchronization
  time: Remove duplicated code in ktime_get_raw_and_real()
  time: Add timekeeping snapshot code capturing system time and counter
  time: Add cycles to nanoseconds translation
  jiffies: Use CLOCKSOURCE_MASK instead of constant
  clocksource: Introduce clocksource_freq2mult()
  clockevents/drivers/exynos_mct: Implement ->set_state_oneshot_stopped()
  clockevents/drivers/arm_global_timer: Implement ->set_state_oneshot_stopped()
  clockevents/drivers/arm_arch_timer: Implement ->set_state_oneshot_stopped()
  clocksource/drivers/arm_global_timer: Register delay timer
  clocksource/drivers/lpc32xx: Support timer-based ARM delay
  clocksource/drivers/lpc32xx: Support periodic mode
  clocksource/drivers/lpc32xx: Don't use the prescaler counter for clockevents
  clocksource/drivers/rockchip: Add err handle for rk_timer_init
  ...

clocksource/drivers/lpc32xx: Support timer-based ARM delay

2016-02-25T13:33:58+00:00

This commit implements the ARM timer-based delay timer for the
LPC32xx, LPC18xx, LPC43xx family of SoCs.

Also, add a dependency to restrict compiling this driver for
the ARM architecture.

Signed-off-by: Ezequiel Garcia 
Signed-off-by: Daniel Lezcano 
Reviewed-by: Joachim Eastwood 
Tested-by: Joachim Eastwood

clocksource: Fix dependencies for archs w/o HAS_IOMEM

2016-01-26T15:26:07+00:00

Not every arch has io memory.
So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger 
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: Daniel Lezcano 
Link: http://lkml.kernel.org/r/1453760661-1444-21-git-send-email-richard@nod.at
Signed-off-by: Thomas Gleixner

clocksource: Select CLKSRC_MMIO where needed

2016-01-26T15:26:07+00:00

The Tegra clocksource implementation uses the clocksource_mmio helper
functions, but currently can be configured without them, which fails:

drivers/clocksource/built-in.o: In function `tegra20_init_timer':
:(.init.text+0xac): undefined reference to `clocksource_mmio_init'
:(.init.text+0x140): undefined reference to `clocksource_mmio_readl_up'

The same problem exists for Digicolor:

drivers/clocksource/built-in.o: In function `digicolor_timer_init':
:(.init.text+0xfa): undefined reference to `clocksource_mmio_init'
:(.init.text+0x14c): undefined reference to `clocksource_mmio_readl_down'

I've inspected the Kconfig file to look for other cases that I have not
yet run into, and added an explicit 'select' to each one to ensure we
can successfully link the drivers.

Signed-off-by: Arnd Bergmann 
Cc: linux-arm-kernel@lists.infradead.org
Cc: Daniel Lezcano 
Link: http://lkml.kernel.org/r/1453737776-1960372-1-git-send-email-arnd@arndb.de
Signed-off-by: Thomas Gleixner

clocksource/drivers/fsl_ftm_timer: Fix CLKSRC_MMIO dependency

2016-01-11T17:45:26+00:00

Select CLKSRC_MMIO when FSL_FTM_TIMER is enabled. Otherwise it fails to
compile on i386 with COMPILE_TEST=y.

"
on i386:
when CLKSRC_MMIO is not enabled:

drivers/built-in.o: In function `ftm_timer_init':
fsl_ftm_timer.c:(.init.text+0x6842): undefined reference to `clocksource_mmio_readl_up'
fsl_ftm_timer.c:(.init.text+0x6855): undefined reference to `clocksource_mmio_init'
"

Reported-by: Randy Dunlap 
Signed-off-by: Daniel Lezcano

clocksource/drivers: Fix dependencies for !HAS_IOMEM archs

2016-01-11T17:45:12+00:00

Not every arch has io memory.

So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger 
Signed-off-by: Daniel Lezcano

clocksource/drivers/tango-xtal: Replace code by clocksource_mmio_init

2015-12-15T09:12:17+00:00

The current code to initialize, register and read the clocksource is
already factored out in mmio.c via the clocksource_mmio_init function.

Factor out the code with the clocksource_mmio_init function.

Signed-off-by: Daniel Lezcano

clocksource/drivers/h8300: Increase the compilation test coverage

2015-12-15T09:12:16+00:00

Add the COMPILE_TEST option so the drivers can be compiled on different
architecture with the 'allyesconfig' kernel configuration.

Signed-off-by: Daniel Lezcano

clocksource/drivers/h8300_timer8: Separate the Kconfig option from the arch

2015-12-15T08:43:59+00:00

The current Kconfig option is the H8300 arch option. In order to comply to the
current rule, let's create a specific option for the timer8 and select it
from the arch's Kconfig.

Signed-off-by: Daniel Lezcano

clocksource/drivers/Kconfig: Add missing GENERIC_CLOCKEVENTS dependency

2015-12-15T08:41:58+00:00

In order to compile on all arch without error with 'allyesconfig' make
sure the platform selected the GENERIC_CLOCKEVENTS. Without this patch
the new added drivers will prevent the kernel to compile on PARISC.

Signed-off-by: Daniel Lezcano