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OMAP3+: PM: VC: handle mutant channel config for OMAP4 MPU channel

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On OMAP3+, all VC channels have the the same bitfield ordering for all
VC channels, except the OMAP4 MPU channel.  This appears to be a freak
accident as all other VC channel (including OMAP5) have the standard
configuration.  Handle the mutant case by adding a per-channel flag
to signal the deformity and handle it during VC init.

Special thanks to Nishanth Menon <nm@ti.com> for finding this problem
and for proposing the initial solution.

Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Kevin Hilman
2011-06-02 17:28:13 -07:00
parent f5395480f5
commit 8abc0b58fd
3 changed files with 53 additions and 14 deletions
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arch/arm/mach-omap2/vc.h
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@@ -66,6 +66,7 @@ struct omap_vc_common {
/* omap_vc_channel.flags values */
#define OMAP_VC_CHANNEL_DEFAULT BIT(0)
#define OMAP_VC_CHANNEL_CFG_MUTANT BIT(1)
/**
* struct omap_vc_channel - VC per-instance data