Current implementation of the hw_mod sysconfig configuration
always sets up SMART idle mode for HW modules. However, a certain
HW module may not support smart idle mode or may have
HW bugs that prevent using smart idle mode.
This patch introduces a mechanism to check supported
idle modes and select in following priority:
1. Smart idle mode
2. Force idle mode
3. No idle mode.
Signed-off-by: Kalle Jokiniemi <kalle.jokini...@nokia.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 28 ++++++++++++++++++++--------
1 files changed, 20 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 028efda..ef77697 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -757,7 +757,7 @@ static void __iomem * __init _find_mpu_rt_base(struct
omap_hwmod *oh, u8 index)
*/
static void _enable_sysc(struct omap_hwmod *oh)
{
- u8 idlemode, sf;
+ u8 idlemode, sf, idlemode_flags;
u32 v;
if (!oh->class->sysc)
@@ -765,17 +765,28 @@ static void _enable_sysc(struct omap_hwmod *oh)
v = oh->_sysc_cache;
sf = oh->class->sysc->sysc_flags;
+ idlemode_flags = oh->class->sysc->idlemodes;
+
+ /* Set the idlemode, priority order: 1. SMART 2. FORCE 3. NOIDLE */
+ if (idlemode_flags & SIDLE_SMART)
+ idlemode = HWMOD_IDLEMODE_SMART;
+ else if (idlemode_flags & SIDLE_FORCE)
+ idlemode = HWMOD_IDLEMODE_FORCE;
+ else
+ idlemode = HWMOD_IDLEMODE_NO;
if (sf & SYSC_HAS_SIDLEMODE) {
- idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
- HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
- _set_slave_idlemode(oh, idlemode, &v);
+ if (oh->flags & HWMOD_SWSUP_SIDLE)
+ _set_slave_idlemode(oh, HWMOD_IDLEMODE_NO, &v);
+ else
+ _set_slave_idlemode(oh, idlemode, &v);
}
if (sf & SYSC_HAS_MIDLEMODE) {
- idlemode = (oh->flags & HWMOD_SWSUP_MSTANDBY) ?
- HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
- _set_master_standbymode(oh, idlemode, &v);
+ if (oh->flags & HWMOD_SWSUP_MSTANDBY)
+ _set_master_standbymode(oh, HWMOD_IDLEMODE_NO, &v);
+ else
+ _set_master_standbymode(oh, idlemode, &v);
}
/*
@@ -788,7 +799,8 @@ static void _enable_sysc(struct omap_hwmod *oh)
_set_clockactivity(oh, oh->class->sysc->clockact, &v);
/* If slave is in SMARTIDLE, also enable wakeup */
- if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE))
+ if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE) &&
+ idlemode_flags & SIDLE_SMART)
_enable_wakeup(oh, &v);
_write_sysconfig(v, oh);
--
1.7.1
--
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