• Imre Deak's avatar
    drm/i915: Unify power well ID enums · 438b8dc4
    Imre Deak authored
    Atm, the power well IDs are defined in separate platform specific enums,
    which isn't ideal for the following reasons:
    - the IDs are used by helpers like lookup_power_well() in a platform
      independent way
    - the always-on power well is used by multiple platforms and so needs
      now separate IDs, although these IDs refer to the same thing
    
    To make things more consistent use a single enum instead of the two
    separate ones, listing the IDs per platform (or set of very similar
    platforms like all GEN9/10). Replace the separate always-on power
    well IDs with a single ID.
    
    While at it also add a note clarifying the distinction between regular
    power wells that follow a common programming pattern and custom ones
    that are programmed in some other way. The IDs for regular power wells
    need to stay fixed, since they also define the request and state HW flag
    positions in their corresponding power well control register(s).
    
    v2:
    - Add comment about id to req,status bit mapping to the enum. (Rodrigo)
    
    Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
    Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
    Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20170711204236.5618-1-imre.deak@intel.comSigned-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    438b8dc4
intel_runtime_pm.c 96.7 KB