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authorBenoit Cousson <b-cousson@ti.com>2010-12-21 21:31:28 -0700
committerPaul Walmsley <paul@pwsan.com>2010-12-21 21:31:28 -0700
commit86009eb326afde34ffdc5648cd344aa86b8d58d4 (patch)
tree404f2e19d3082bd8d6eea4871e9f0bb1e78ac82b
parentf2dd7e09db3e18e4c053810b72fe026685d9bf0c (diff)
OMAP2+: hwmod: Add wakeup support for new OMAP4 IPs
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>
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c16
-rw-r--r--arch/arm/plat-omap/include/plat/omap_hwmod.h5
2 files changed, 18 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index c576121b58a9..03ffa3b282b1 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -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);
}
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index ab99b8cca6ad..619877c6b3ab 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -76,6 +76,8 @@ extern struct omap_hwmod_sysc_fields omap_hwmod_sysc_type2;
#define HWMOD_IDLEMODE_FORCE (1 << 0)
#define HWMOD_IDLEMODE_NO (1 << 1)
#define HWMOD_IDLEMODE_SMART (1 << 2)
+/* Slave idle mode flag only */
+#define HWMOD_IDLEMODE_SMART_WKUP (1 << 3)
/**
* struct omap_hwmod_irq_info - MPU IRQs used by the hwmod
@@ -227,11 +229,12 @@ struct omap_hwmod_ocp_if {
/* Macros for use in struct omap_hwmod_sysconfig */
/* Flags for use in omap_hwmod_sysconfig.idlemodes */
-#define MASTER_STANDBY_SHIFT 2
+#define MASTER_STANDBY_SHIFT 4
#define SLAVE_IDLE_SHIFT 0
#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
+#define SIDLE_SMART_WKUP (HWMOD_IDLEMODE_SMART_WKUP << SLAVE_IDLE_SHIFT)
#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)