On Tuesday 13 September 2011 12:22 AM, Kevin Hilman wrote:
Santosh Shilimkar<santosh.shilimkar@xxxxxx> writes:
This patch adds the MPUSS OSWR (Open Switch Retention) support. The MPUSS
OSWR configuration is as below.
- CPUx L1 and logic lost, MPUSS logic lost, L2 memory is retained
OMAP4460 onwards, MPUSS power domain doesn't support OFF state any more
anymore just like CORE power domain. The deepest state supported is OSWR.
On OMAP4430 secure devices too, MPUSS off mode can't be used because of
a bug which alters Ducati and Tesla states. Hence MPUSS off mode as an
independent state isn't supported on OMAP44XX devices.
Ofcourse when MPUSS power domain transitions to OSWR along
with device off mode, it eventually hits off state since memory
contents are lost.
Hence the MPUSS off mode independent state is not attempted without
device off mode. All the necessary infrastructure code for MPUSS
off mode is in place as part of this series.
Signed-off-by: Santosh Shilimkar<santosh.shilimkar@xxxxxx>
Cc: Kevin Hilman<khilman@xxxxxx>
Compile failure for the !CONFIG_PM case:
[...]
@@ -70,11 +71,18 @@ static inline int omap4_mpuss_init(void)
{
return 0;
}
-
+static inline u32 omap4_mpuss_read_prev_context_state(void)
+{
+ return 0;
+}
added here
static inline int omap4_finish_suspend(unsigned long cpu_state)
{}
static inline void omap4_cpu_resume(void)
{}
+static inline u32 omap4_mpuss_read_prev_context_state(void)
+{
+ return 0;
+}
same thing added here
I noticed this yesterday and was planning to send a note on this
patch. :(
Have removed this already in the updated patches.
Thanks for pointing it out.
Regards
Santosh
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