Commit graph

12 commits

Author SHA1 Message Date
Magnus Damm
f6431732f1 sh: CMT suspend/resume
This patch updates the SuperH CMT driver with suspend and resume
callbacks for the suspend-to-ram case. This patch stops the CMT
channel at suspend time to avoid unwanted wake up events.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-15 12:58:45 +09:00
Magnus Damm
be890a1a95 sh: turn off irqs when disabling CMT/TMU timers
Modify the CMT and TMU drivers to disable interrupts when
disabling the timer. Only using start/stop bits is not
enough.

This fixes a bootup hang on Migo-R when the CMT is replaced
by TMU for clockevents but the CMT keeps on delivering irqs
even though the timer start bit is off.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 15:39:56 +09:00
Paul Mundt
e7fad451f0 clocksource: Drop unused irqaction.mask from SH drivers.
The irqaction.mask is legacy code that is wholly unused and going away,
so simply drop its use in the SH drivers completely.

Fixes up build failures in -next.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 21:18:24 +09:00
Paul Mundt
d1fcc0a8db clocksource: sh_mtu2/cmt_register() should be static.
Neither of these need to be exported, so just make them static.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-03 18:05:42 +09:00
Paul Mundt
46a12f7426 sh: Consolidate MTU2/CMT/TMU timer platform data.
All of the SH timers use a roughly identical structure for platform data,
which presently is broken out for each block. Consolidate all of these
definitions, as there is no reason for them to be broken out in the first
place.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-03 17:57:17 +09:00
Magnus Damm
3014f47460 clocksource: sh_cmt 16-bit fixes
This patch contains various fixes for 16-bit cmt hardware.
With this applied periodic clockevents work fine on sh7203.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-30 12:57:30 +09:00
Magnus Damm
8e0b842948 sh: setup timers in late_time_init()
This patch moves the SuperH timer setup code from time_init()
to late_time_init(). Good things about this change:
 - interrupts: they are enabled at late_time_init()
 - mm: regular kmalloc() can be used at late_time_init()

Together with moving to late_time_init() this patch changes
the sh_cmt driver to always allocate with kmalloc(). This
simplifies the code a bit and also fixes section mismatches.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-28 18:01:25 +09:00
Magnus Damm
5b644c7a21 clocksource: improve sh_cmt clocksource overflow handling
This patch improves the sh_cmt clocksource handling.

Currently the counter value is ignored in the case of
overflow. With this patch the overflow flag is read
before and after reading the counter, removing any
counter value and overflow flag mismatch issues.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-28 18:01:21 +09:00
Magnus Damm
19bdc9d061 clocksource: sh_cmt clocksource support
Add clocksource support to the sh_cmt driver. With this in
place we can do tickless with a single CMT channel.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-22 09:31:04 +09:00
Magnus Damm
e475eedb09 clocksource: sh_cmt earlytimer support
Add Early Platform Driver support to the sh_cmt driver
using the earlytimer class.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-19 13:06:22 +09:00
Magnus Damm
3093e78eba clocksource: sh_cmt: use remove_irq() and remove clockevent workaround
Update the sh_cmt driver to make use of recent irq and clockevent changes:
 - use remove_irq() together with setup_irq()
 - remove mult workaround since WARN_ON() now has been moved

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-02 11:18:48 +09:00
Magnus Damm
3fb1b6ad06 sh: CMT clockevent platform driver
SuperH CMT clockevent driver.

Both 16-bit and 32-bit CMT versions are supported, but only 32-bit
is tested. This driver contains support for both clockevents and
clocksources, but no unregistration is supported at this point.

Works fine as clock source and/or event in periodic or oneshot mode.
Tested on sh7722 and sh7723, but should work with any cpu/architecture.

This version is lacking clocksource and early platform driver support
for now - this to minimize the amount of dependencies.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-29 16:56:32 +09:00