Some clockdomains can't support manual domain transitions triggered by
clock framework, and must be prevented from doing so. Added clkdm flag
CLKDM_NO_MANUAL_TRANS for doing this.
Signed-off-by: Tero Kristo <t-kri...@ti.com>
Cc: Paul Walmsley <p...@pwsan.com>
Cc: Kevin Hilman <khil...@ti.com>
---
arch/arm/mach-omap2/clockdomain.c | 6 ++++++
arch/arm/mach-omap2/clockdomain.h | 3 +++
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/clockdomain.c
b/arch/arm/mach-omap2/clockdomain.c
index c0b6187..850665d 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -944,6 +944,9 @@ static int _clkdm_clk_hwmod_enable(struct clockdomain
*clkdm)
if ((clkdm_usecount_inc(clkdm) > 1) && autodeps)
return 0;
+ if (clkdm->flags & CLKDM_NO_MANUAL_TRANS)
+ return 0;
+
spin_lock_irqsave(&clkdm->lock, flags);
arch_clkdm->clkdm_clk_enable(clkdm);
pwrdm_wait_transition(clkdm->pwrdm.ptr);
@@ -970,6 +973,9 @@ static int _clkdm_clk_hwmod_disable(struct clockdomain
*clkdm)
if (clkdm_usecount_dec(clkdm) > 0)
return 0;
+ if (clkdm->flags & CLKDM_NO_MANUAL_TRANS)
+ return 0;
+
spin_lock_irqsave(&clkdm->lock, flags);
arch_clkdm->clkdm_clk_disable(clkdm);
pwrdm_clkdm_state_switch(clkdm);
diff --git a/arch/arm/mach-omap2/clockdomain.h
b/arch/arm/mach-omap2/clockdomain.h
index 373399a..8693bec 100644
--- a/arch/arm/mach-omap2/clockdomain.h
+++ b/arch/arm/mach-omap2/clockdomain.h
@@ -31,12 +31,15 @@
*
* CLKDM_NO_AUTODEPS: Prevent "autodeps" from being added/removed from this
* clockdomain. (Currently, this applies to OMAP3 clockdomains only.)
+ * CLKDM_NO_MANUAL_TRANS: Prevent clockdomain code from attempting to change
+ * clockdomain state manually. Needed for PER domain on omap3.
*/
#define CLKDM_CAN_FORCE_SLEEP (1 << 0)
#define CLKDM_CAN_FORCE_WAKEUP (1 << 1)
#define CLKDM_CAN_ENABLE_AUTO (1 << 2)
#define CLKDM_CAN_DISABLE_AUTO (1 << 3)
#define CLKDM_NO_AUTODEPS (1 << 4)
+#define CLKDM_NO_MANUAL_TRANS (1 << 5)
#define CLKDM_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO |
CLKDM_CAN_DISABLE_AUTO)
#define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP |
CLKDM_CAN_FORCE_WAKEUP)
--
1.7.4.1
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