Migrate bcm_kona driver to the new 'set-state' interface provided by
the clockevents core, the earlier 'set-mode' interface is marked
obsolete now.

This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.

Oneshot callback isn't required as it was empty.
Acked-by: NRay Jui <rjui@broadcom.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

It makes no sense to hide the __iomem annotation from the function
that uses it, especially since it causes a sparse warning:

drivers/clocksource/bcm_kona_timer.c:118:38: warning: incorrect type in argument 1 (different address spaces)
drivers/clocksource/bcm_kona_timer.c:118:38:    expected void *timer_base
drivers/clocksource/bcm_kona_timer.c:118:38:    got void [noderef] <asn:2>*static [toplevel] tmr_regs
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Since there may be other clocksources available, this driver should not
trigger a panic simply because it can not determine the frequency of an
external clock.  This change refactors the driver to allow a warning to
be printed in this case instead.
Signed-off-by: NTim Kryger <tim.kryger@linaro.org>
Reviewed-by: NMarkus Mayer <markus.mayer@linaro.org>
Reviewed-by: NMatt Porter <matt.porter@linaro.org>
Cc: Christian Daudt <bcm@fixthebug.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1391559304-26558-1-git-send-email-tim.kryger@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

When an clock is specified in the device tree, enable it and use it to
determine the external clock frequency.
Signed-off-by: NTim Kryger <tim.kryger@linaro.org>
Reviewed-by: NMarkus Mayer <markus.mayer@linaro.org>
Reviewed-by: NMatt Porter <matt.porter@linaro.org>
Reviewed-by: NChristian Daudt <bcm@fixthebug.org>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NChristian Daudt <bcm@fixthebug.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

bcm_timer_ids is no longer used after converting to CLOCKSOURCE_OF_DECLARE.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

[ this is a follow-up to this discussion:
http://archive.arm.linux.org.uk/lurker/message/20130730.230827.a1ceb12a.en.html ]
This patchset renames all uses of "bcm," name bindings to
"brcm," as they were done prior to knowing that brcm had
already been standardized as Broadcom vendor prefix
(in Documentation/devicetree/bindings/vendor-prefixes.txt).
This will not cause any churn on devices because none of
these bindings have made it into production yet.
Signed-off-by: NChristian Daudt <csd@broadcom.com>
Acked-by: NStephen Warren <swarren@nvidia.com>

The CLOCKSOURCE_OF_DECLARE functions now take a device_node pointer
as their argument, as of the clksrc/cleanup branch in arm-soc.
This patch adapts the bcm_kona_timer driver to the new interface.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NChristian Daudt <csd@broadcom.com>
Cc: John Stultz <john.stultz@linaro.org>

This adds support for the Broadcom timer, used in the following SoCs:
BCM11130, BCM11140, BCM11351, BCM28145, BCM28155

Updates from V6:
- Split DT portion into a separate patch

Updates from V5:
- Rebase to latest arm-soc/for-next

Updates from V4:
- Switch code to use CLOCKSOURCE_OF_DECLARE

Updates from V3:
- Migrate to 3.9 timer framework updates

Updates from V2:
- prepend static fns + fields with kona_

Updates from V1:
- Rename bcm_timer.c to bcm_kona_timer.c
- Pull .h into bcm_kona_timer.c
- Make timers static
- Clean up comment block
- Switched to using clockevents_config_and_register
- Added an error to the get_timer loop if it repeats too much
- Added to Documentation/devicetree/bindings/arm/bcm/bcm,kona-timer.txt
- Added missing readl to timer_disable_and_clear

Note: bcm,kona-timer was kept as the 'compatible' field to make it
specific enough for when there are multiple bcm timers (bcm,timer is
too generic).
Signed-off-by: NChristian Daudt <csd@broadcom.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NJohn Stultz <john.stultz@linaro.org>
Reviewed-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>