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OMAP2+: hwmod: Add wakeup support for new OMAP4 IPs

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The new OMAP4 IPs introduced a new idle mode named smart-idle with wakeup.

This new idlemode replaces the enawakeup for the new IPs but seems to
coexist as well for some legacy IPs (UART, GPIO, MCSPI...)

Add the new SIDLE_SMART_WKUP flag to mark the IPs that support this
capability.
The omap_hwmod_44xx_data.c will have to be updated to add this new flag.

Enable this new mode when applicable in _enable_wakeup, _enable_sysc and
_idle_sysc.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Tested-by: Sebastien Guiriec <s-guiriec@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Rajendra Nayak <rnayak@ti.com>
This commit is contained in:
Benoit Cousson
2010-12-21 21:31:28 -07:00
committed by Paul Walmsley
parent f2dd7e09db
commit 86009eb326
2 changed files with 18 additions and 3 deletions
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16
arch/arm/mach-omap2/omap_hwmod.c
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@@ -393,7 +393,8 @@ static int _enable_wakeup(struct omap_hwmod *oh, u32 *v)
u32 wakeup_mask;
if (!oh->class->sysc ||
!(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
!((oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP) ||
(oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)))
return -EINVAL;
if (!oh->class->sysc->sysc_fields) {
@@ -405,6 +406,9 @@ static int _enable_wakeup(struct omap_hwmod *oh, u32 *v)
*v |= wakeup_mask;
if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)
_set_slave_idlemode(oh, HWMOD_IDLEMODE_SMART_WKUP, v);
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
oh->_int_flags |= _HWMOD_WAKEUP_ENABLED;
@@ -424,7 +428,8 @@ static int _disable_wakeup(struct omap_hwmod *oh, u32 *v)
u32 wakeup_mask;
if (!oh->class->sysc ||
!(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
!((oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP) ||
(oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)))
return -EINVAL;
if (!oh->class->sysc->sysc_fields) {
@@ -436,6 +441,9 @@ static int _disable_wakeup(struct omap_hwmod *oh, u32 *v)
*v &= ~wakeup_mask;
if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)
_set_slave_idlemode(oh, HWMOD_IDLEMODE_SMART, v);
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
oh->_int_flags &= ~_HWMOD_WAKEUP_ENABLED;
@@ -832,6 +840,10 @@ static void _idle_sysc(struct omap_hwmod *oh)
_set_master_standbymode(oh, idlemode, &v);
}
/* If slave is in SMARTIDLE, also enable wakeup */
if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE))
_enable_wakeup(oh, &v);
_write_sysconfig(v, oh);
}