linux-toradex.git/arch/avr32/kernel/time.c, branch v4.2.4

AVR32/time: Migrate to new 'set-state' interface

2015-07-20T10:19:10+00:00

Migrate avr32 driver to the new 'set-state' interface provided by
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.

We want to call cpu_idle_poll_ctrl() in shutdown only if we were in
oneshot or resume state earlier. Create another variable to save this
information and check that in shutdown callback.

Cc: Haavard Skinnemoen 
Cc: Hans-Christian Egtvedt 
Signed-off-by: Viresh Kumar 
Acked-by: Hans-Christian Egtvedt

avr32: remove deprecated IRQF_DISABLED

2013-12-10T07:46:38+00:00

This patch proposes to remove the use of the IRQF_DISABLED flag

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker 
Acked-by: Hans-Christian Egtvedt

avr32: fix clockevents kernel warning

2013-09-30T06:42:01+00:00

Since commit 01426478df3a8791ff5c8b6b82d409e699cfaf38
(avr32: Use generic idle loop) the kernel throws the
following warning on avr32:

  WARNING: at 900322e4 [verbose debug info unavailable]
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc2 #117
  task: 901c3ecc ti: 901c0000 task.ti: 901c0000
  PC is at cpu_idle_poll_ctrl+0x1c/0x38
  LR is at comparator_mode+0x3e/0x40
  pc : [<900322e4>]    lr : [<90014882>]    Not tainted
  sp : 901c1f74  r12: 00000000  r11: 901c74a0
  r10: 901d2510  r9 : 00000001  r8 : 901db4de
  r7 : 901c74a0  r6 : 00000001  r5 : 00410020  r4 : 901db574
  r3 : 00410024  r2 : 90206fe0  r1 : 00000000  r0 : 007f0000
  Flags: qvnzc
  Mode bits: hjmde....G
  CPU Mode: Supervisor
  Call trace:
   [<90039ede>] clockevents_set_mode+0x16/0x2e
   [<90039f00>] clockevents_shutdown+0xa/0x1e
   [<9003a078>] clockevents_exchange_device+0x58/0x70
   [<9003a78c>] tick_check_new_device+0x38/0x54
   [<9003a1a2>] clockevents_register_device+0x32/0x90
   [<900035c4>] time_init+0xa8/0x108
   [<90000520>] start_kernel+0x128/0x23c

When the 'avr32_comparator' clockevent device is registered,
the clockevent core sets the mode of that clockevent device
to CLOCK_EVT_MODE_SHUTDOWN. Due to this, the 'comparator_mode'
function calls the 'cpu_idle_poll_ctrl' to disables idle poll.
This results in the aforementioned warning because the polling
is not enabled yet.

Change the code to only disable idle poll if it is enabled by
the same function to avoid the warning.

Cc: stable@vger.kernel.org
Signed-off-by: Gabor Juhos 
Acked-by: Hans-Christian Egtvedt

avr32: Use generic idle loop

2013-04-08T15:39:24+00:00

Also replace the idle poll enforcement by the generic functionality.

Signed-off-by: Thomas Gleixner 
Cc: Linus Torvalds 
Cc: Rusty Russell 
Cc: Paul McKenney 
Cc: Peter Zijlstra 
Reviewed-by: Cc: Srivatsa S. Bhat 
Cc: Magnus Damm 
Cc: Hans-Christian Egtvedt 
Link: http://lkml.kernel.org/r/20130321215233.950290809@linutronix.de
Signed-off-by: Thomas Gleixner

avr32: Convert to clocksource_register_hz

2011-01-13T19:41:11+00:00

This converts the avr32 clocksource to use clocksource_register_hz.

This is untested, so any assistance in testing would be appreciated!

CC: Hans-Christian Egtvedt 
CC: Thomas Gleixner 
Signed-off-by: John Stultz

avr32: Fix typo in read_persistent_clock()

2010-04-27T13:26:24+00:00

Fix fallout from the persistent_clock changes.

Signed-off-by: Peter Huewe 
Cc: John Stultz 
Cc: Haavard Skinnemoen 
Signed-off-by: Thomas Gleixner

avr32: Convert avr32 to use read/update_persistent_clock

2010-03-13T00:14:10+00:00

This patch converts the avr32 architecture to use the generic
read_persistent_clock and update_persistent_clock interfaces, reducing
the amount of arch specific code we have to maintain, and allowing for
further cleanups in the future.

I have not built or tested this patch, so help from arch maintainers
would be appreciated.

Signed-off-by: John Stultz 
Cc: Haavard Skinnemoen 
Cc: Andrew Morton 
LKML-Reference: <1267675049-12337-7-git-send-email-johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner

clocksource: pass clocksource to read() callback

2009-04-21T20:41:47+00:00

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: Magnus Damm 
Acked-by: John Stultz 
Cc: Thomas Gleixner 
Signed-off-by: Hugh Dickins 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

cpumask: convert struct clock_event_device to cpumask pointers.

2008-12-13T10:50:26+00:00

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: Rusty Russell 
Cc: Ingo Molnar

avr32: Use instead of

2008-08-05T12:36:57+00:00

Update all avr32-specific files to use the new platform-specific header
locations. Drivers shared with ARM are left alone for now.

Signed-off-by: Haavard Skinnemoen