• David Brownell's avatar
    regulator: sysfs attribute reduction (v2) · 7ad68e2f
    David Brownell authored
    Clean up the sysfs interface to regulators by only exposing the
    attributes that can be properly displayed.  For example: when a
    particular regulator method is needed to display the value, only
    create that attribute when that method exists.
    
    This cleaned-up interface is much more comprehensible.  Most
    regulators only support a subset of the possible methods, so
    often more than half the attributes would be meaningless.  Many
    "not defined" values are no longer necessary.  (But handling
    of out-of-range values still looks a bit iffy.)
    
    Documentation is updated to reflect that few of the attributes
    are *always* present, and to briefly explain why a regulator may
    not have a given attribute.
    
    This adds object code, about a dozen bytes more than was removed
    by the preceding patch, but saves a bunch of per-regulator data
    associated with the now-removed attributes.  So there's a net
    reduction in memory footprint.
    Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
    Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
    7ad68e2f
sysfs-class-regulator 10.1 KB