drm/i915: add port power domains

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Parts that poke port specific HW blocks like the encoder HW state
readout or connector hotplug detect code need a way to check whether
required power domains are on or enable/disable these. For this purpose
add a set of power domains that refer to the port HW blocks. Get the
proper port power domains during modeset.

For now when requesting the power domain for a DDI port get it for a 4
lane configuration. This can be optimized later to request only the 2
lane power domain, when proper support is added on the VLV PHY side for
this. Atm, the PHY setup code assumes a 4 lane config in all cases.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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This commit is contained in:

Imre Deak 2014-03-04 19:22:57 +02:00 • committed by Daniel Vetter

parent a45f4466e4

commit 319be8ae8a

5 changed files with 90 additions and 5 deletions

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22

drivers/gpu/drm/i915/i915_debugfs.c

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11

drivers/gpu/drm/i915/i915_drv.h

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51

drivers/gpu/drm/i915/intel_display.c

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2

drivers/gpu/drm/i915/intel_drv.h

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9

drivers/gpu/drm/i915/intel_pm.c

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