• Russell King's avatar
    [ARM] pxa: Add PXA3 standby code hooked into the IRQ wake scheme · 7b5dea12
    Russell King authored
    Wakeup sources on PXA3 are enabled at two levels.  First, the MFP
    configuration has to be set to enable which edges a specific pin
    will trigger a wakeup.  The pin also has to be routed to a functional
    unit.  Lastly, the functional unit must be enabled as a wakeup source
    in the appropriate AD*ER registers (AD2D0ER for standby resume.)
    
    This doesn't fit well with the IRQ wake scheme - we currently do a
    best effort conversion from IRQ numbers to functional unit wake enable
    bits.  For instance, there's several USB client related enable bits but
    there's no corresponding IRQs to determine which you'd want.  Conversely,
    there's a single enable bit covering several functional units.
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
    7b5dea12
pxa3xx.c 10.1 KB