Add sched_clock using cyc_to_sched_clock and update_sched_clock
with HAVE_SCHED_CLOCK
tested on iMX27 and iMX35
Signed-off-by: NJan Weitzel <j.weitzel@phytec.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

this is needed to use get_cycles with sched_clock. Accessing timer
without enabled clk will result in crash
Signed-off-by: NJan Weitzel <j.weitzel@phytec.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

In d7e81c26 (clocksource: Add clocksource_register_hz/khz interface) new
interfaces were added which simplify (and optimize) the selection of the
divisor shift/mult constants.  Switch over to using this new interface.
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Commit "mxc: Change gpt timer code to be more generic by using V2
instead of MX3" forgot to replace one occurence causing a build
failure.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Cc: Amit Kucheria <amit.kucheria@canonical.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Replace mx3_ with v2_ since the register layout is the same for all SoCs using
version 2 of the timer (mx25, mx31, mx37 and now mx51)
Signed-off-by: NAmit Kucheria <amit.kucheria@canonical.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Refactor the timer code into version 1 and version 2.

Essentially there are 2 versions of the timer hardware on Freescale MXC
hardware. Version 1 is found on MX1/MXL, MX21 and MX27. Version 2 is found on
MX25, MX31, MX35, MX37, MX51, and future parts.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NAmit Kucheria <amit.kucheria@canonical.com>

Signed-off-by: NDmitriy Taychenachev <dimichxp@gmail.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Currently we depend on hardcoded base addresses for the timer.
This prevents us from compiling in more than one i.MX architecture
at a time. This patch changes the base address to a runtime
calculated one.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Acked-by: NJohn Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Here are some of the warnings that get fixed by this:

> 200 times: warning: cast adds address space to expression (<asn:2>)
twelve times: warning: symbol 'xxx' was not declared. Should it be static
two times: warning: symbol 'clock' shadows an earlier one
five times: warning: incorrect type in initializer (different address spaces)
Signed-off-by: NHolger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

- rename mxc_clocks_init to architecture specific versions. This
  allows us to have more than one architecture compiled in.
- call mxc_timer_init from clock initialisation instead from board
  code
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Impact: change calling convention of existing clock_event APIs

struct clock_event_timer's cpumask field gets changed to take pointer,
as does the ->broadcast function.

Another single-patch change.  For safety, we BUG_ON() in
clockevents_register_device() if it's not set.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@elte.hu>

This just leaves include/asm-arm/plat-* to deal with.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This patch adds timer support for the i.MX machine family. This code can
be used on the following machs:

 - i.MX1 (tested)
 - i.MX2 (i.MX21 (to be tested), i.MX27 (tested))
 - i.MX3 (i.MX31 (tested))

TODO: It seems impossible to build a kernel for more than one CPU because the
timer do not follow the platform device rules. So it does only work if
timer 1 can be accessed on all CPUs at the same address.
Signed-off-by: NJuergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>