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ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules 

Some modules doesn't have SYSC_HAS_ENAWAKEUP bit available (ex: usb
host uhh module) in absence of this flag
omap_hwmod_enable/disable_wakeup avoids configuring pad mux wakeup
capability.

Configure sysc if SYSC_HAS_ENAWAKEUP is available and for other cases
try enabling/disabling wakeup from mux_pad pins.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
[paul@pwsan.com: updated function kerneldoc documentation]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Govindraj.R 2012-04-05 02:59:32 -06:00 committed by Paul Walmsley
parent dd775ae254
commit 2a1cc1445a
1 changed files with 30 additions and 26 deletions
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56
arch/arm/mach-omap2/omap_hwmod.c
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@ -2463,26 +2463,28 @@ int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
* @oh: struct omap_hwmod *
*
* Sets the module OCP socket ENAWAKEUP bit to allow the module to
* send wakeups to the PRCM. Eventually this should sets PRCM wakeup
* registers to cause the PRCM to receive wakeup events from the
* module. Does not set any wakeup routing registers beyond this
* point - if the module is to wake up any other module or subsystem,
* that must be set separately. Called by omap_device code. Returns
* -EINVAL on error or 0 upon success.
* send wakeups to the PRCM, and enable I/O ring wakeup events for
* this IP block if it has dynamic mux entries. Eventually this
* should set PRCM wakeup registers to cause the PRCM to receive
* wakeup events from the module. Does not set any wakeup routing
* registers beyond this point - if the module is to wake up any other
* module or subsystem, that must be set separately. Called by
* omap_device code. Returns -EINVAL on error or 0 upon success.
*/
int omap_hwmod_enable_wakeup(struct omap_hwmod *oh)
{
unsigned long flags;
u32 v;
if (!oh->class->sysc ||
!(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
return -EINVAL;
spin_lock_irqsave(&oh->_lock, flags);
v = oh->_sysc_cache;
_enable_wakeup(oh, &v);
_write_sysconfig(v, oh);
if (oh->class->sysc &&
(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP)) {
v = oh->_sysc_cache;
_enable_wakeup(oh, &v);
_write_sysconfig(v, oh);
}
_set_idle_ioring_wakeup(oh, true);
spin_unlock_irqrestore(&oh->_lock, flags);
@ -2494,26 +2496,28 @@ int omap_hwmod_enable_wakeup(struct omap_hwmod *oh)
* @oh: struct omap_hwmod *
*
* Clears the module OCP socket ENAWAKEUP bit to prevent the module
* from sending wakeups to the PRCM. Eventually this should clear
* PRCM wakeup registers to cause the PRCM to ignore wakeup events
* from the module. Does not set any wakeup routing registers beyond
* this point - if the module is to wake up any other module or
* subsystem, that must be set separately. Called by omap_device
* code. Returns -EINVAL on error or 0 upon success.
* from sending wakeups to the PRCM, and disable I/O ring wakeup
* events for this IP block if it has dynamic mux entries. Eventually
* this should clear PRCM wakeup registers to cause the PRCM to ignore
* wakeup events from the module. Does not set any wakeup routing
* registers beyond this point - if the module is to wake up any other
* module or subsystem, that must be set separately. Called by
* omap_device code. Returns -EINVAL on error or 0 upon success.
*/
int omap_hwmod_disable_wakeup(struct omap_hwmod *oh)
{
unsigned long flags;
u32 v;
if (!oh->class->sysc ||
!(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
return -EINVAL;
spin_lock_irqsave(&oh->_lock, flags);
v = oh->_sysc_cache;
_disable_wakeup(oh, &v);
_write_sysconfig(v, oh);
if (oh->class->sysc &&
(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP)) {
v = oh->_sysc_cache;
_disable_wakeup(oh, &v);
_write_sysconfig(v, oh);
}
_set_idle_ioring_wakeup(oh, false);
spin_unlock_irqrestore(&oh->_lock, flags);