Commit Graph

14 Commits

Author SHA1 Message Date
Thomas Gleixner a18f22a968 Merge branch 'consolidate-clksrc-i8253' of master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource
Conflicts:
	arch/ia64/kernel/cyclone.c
	arch/mips/kernel/i8253.c
	arch/x86/kernel/i8253.c

Reason: Resolve conflicts so further cleanups do not conflict further

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-05-14 12:06:36 +02:00
Michal Simek 29e3dbb10f microblaze: Fix sparse warning - timer.c
Variables and init_microblaze_timecounter should be static.

Warning log:
CHECK   arch/microblaze/kernel/timer.c
arch/microblaze/kernel/timer.c:41:14: warning: symbol 'freq_div_hz' was not declared. Should it be static?
arch/microblaze/kernel/timer.c:42:14: warning: symbol 'timer_clock_freq' was not declared. Should it be static?
arch/microblaze/kernel/timer.c:205:12: warning: symbol 'init_microblaze_timecounter' was not declared. Should it be static?

Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-03-09 08:09:57 +01:00
John Stultz b8f39f7dfe microblaze: convert to clocksource_register_hz/khz
This converts the microblaze clocksources to use clocksource_register_hz/khz

CC: Michal Simek <monstr@monstr.eu>
CC: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: John Stultz <johnstul@us.ibm.com>
2011-02-21 13:33:46 -08:00
Michal Simek ccea0e6e49 microblaze: Support timer on AXI lite
New microblaze systems uses two buses. One for memories
and flashes and the second for low-speed peripherals
which can run on different CLK. This is the reason
why the kernel is trying to read clock-frequency
directly from node. If there is then the kernel will
work with it. If not then cpu CLK is used.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21 15:52:00 +10:00
Michal Simek 02b08045a0 microblaze: Add support for little-endian Microblaze
Microblaze little-endian toolchain exports __MICROBLAZEEL__
which is used in the kernel to identify little/big endian.

The most of the changes are in loading values from DTB which
is always big endian.

Little endian platforms are based on new AXI bus which has
impact to early uartlite initialization.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21 15:51:59 +10:00
Michal Simek e65f1e2843 microblaze: Remove additional compatible properties
Device-tree BSP generates longer compatible properties
that's why we can remove extra/old one.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21 15:51:47 +10:00
Joe Perches 92ee8bd468 microblaze: Use static const char * const where possible
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21 15:51:45 +10:00
Michal Simek 69717607f0 microblaze: Report if only one timer is used
Kernel needs two timers because of clocksource and clockevent.
It is better to show warning message directly on early
console if available. If it isn't available kernel log buffer
contains it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-10-21 15:51:30 +10:00
Michal Simek c8f77436d1 microblaze: Decrease time shifting values
Lower shifting values ensure that shifted 32bit counter
value doesn't exceed 64bit cycle variable too fast.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04 10:22:39 +02:00
Michal Simek 6f34b08f58 microblaze: Improve ftrace time measuring
I had to comment sched_clock generic function because of broken toolchain.
It is fine grain timing.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-08-04 10:22:35 +02:00
Michal Simek 519e9f4173 microblaze: Register timecounter/cyclecounter
It is the same counter as we use as free running one.
I would like to use it for ftrace.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-12-14 08:40:09 +01:00
John Williams 892ee92b81 microblaze: Sane handling of missing timer/intc in device tree
This code path doesn't test any returned pointers for NULL, leading to a bad
kernel page fault if there's no timer/intc found.

Slightly better is to BUG(), but even better still would be a printk beforehand.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-08-18 10:33:30 +02:00
Coly Li f57f2fe2a3 microblaze: add parameter to microblaze_read()
This patch modifies parameter of microblaze_read() from 'void' to 'struct
clocksource *cs', which fixes compile warning for incompatible parameter type.

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-04-23 16:27:38 +02:00
Michal Simek eedbdab99f microblaze_v8: Interrupt handling and timer support
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-03-27 14:25:49 +01:00