ARM: DaVinci: generalize dm644x pinmux
Generalizes dm644x pinmux. The existing pinmux layer works only when the PINMUX register has single bit field to enable the secondary function. DM646x can support secondary as well as tertiary pin functions. This new pinmux layer is similar to the one being used by OMAP architecture. Checkpatch script reports a false positive error at line no.465 of this patch. This patch is based on the work originally done by Vladimir Barinov, when he was in MontaVista. Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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