If a hwmod is in HWAUTO mode, it will idle automatically and should not
be accounted for in the clkdm / pwrdm usecounts. Thus, flag modules in
such mode as autoidle during init, and ignore these in subsequent
usecount calculations.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
arch/arm/mach-omap2/clockdomain.c | 6 ++++++
arch/arm/mach-omap2/omap_hwmod.c | 3 +++
arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 ++
3 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 2fa433a..0ee7d09a 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -1055,6 +1055,9 @@ int clkdm_hwmod_enable(struct clockdomain *clkdm, struct omap_hwmod *oh)
if (!oh)
return -EINVAL;
+ if (oh->flags & HWMOD_AUTOIDLE)
+ return 0;
+
return _clkdm_clk_hwmod_enable(clkdm);
}
@@ -1086,6 +1089,9 @@ int clkdm_hwmod_disable(struct clockdomain *clkdm, struct omap_hwmod *oh)
if (!oh)
return -EINVAL;
+ if (oh->flags & HWMOD_AUTOIDLE)
+ return 0;
+
return _clkdm_clk_hwmod_disable(clkdm);
}
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index f826917..6807b02 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2377,6 +2377,9 @@ static int __init _register(struct omap_hwmod *oh)
INIT_LIST_HEAD(&oh->slave_ports);
spin_lock_init(&oh->_lock);
+ if (cpu_is_omap44xx() && oh->prcm.omap4.modulemode == MODULEMODE_HWCTRL)
+ oh->flags |= HWMOD_AUTOIDLE;
+
oh->_state = _HWMOD_STATE_REGISTERED;
/*
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 0f840a9..36130f9 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -440,6 +440,7 @@ struct omap_hwmod_omap4_prcm {
* in order to complete the reset. Optional clocks will be disabled
* again after the reset.
* HWMOD_16BIT_REG: Module has 16bit registers
+ * HWMOD_AUTOIDLE: Module is controlled automatically by hardware
*/
#define HWMOD_SWSUP_SIDLE (1 << 0)
#define HWMOD_SWSUP_MSTANDBY (1 << 1)
@@ -450,6 +451,7 @@ struct omap_hwmod_omap4_prcm {
#define HWMOD_NO_IDLEST (1 << 6)
#define HWMOD_CONTROL_OPT_CLKS_IN_RESET (1 << 7)
#define HWMOD_16BIT_REG (1 << 8)
+#define HWMOD_AUTOIDLE (1 << 9)
/*
* omap_hwmod._int_flags definitions
--
1.7.4.1
--
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