drm/i915: add a default always-on power well

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So far we distinguished platforms without a dynamic power well with
the HAS_POWER_WELL macro and for such platforms we didn't call any power
domain functions. Instead of doing this check we can add an always-on
power well for these platforms and call the power domain functions
unconditionally. For always-on power wells we only increase/decrease
their refcounts, otherwise they are nop.

This makes high level driver code more readable and as a bonus provides
some idea of the current power domains state for all platforms (once
the relevant debugfs entry is added).

v3: rename intel_power_wells to i9xx_always_on_power_well (Paulo)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Paulo Zanoni <paulo.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Imre Deak 2013-11-25 17:15:34 +02:00 • committed by Daniel Vetter

parent f7243ac9a2

commit 1c2256df26

3 changed files with 16 additions and 31 deletions

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18

drivers/gpu/drm/i915/i915_dma.c

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1

drivers/gpu/drm/i915/i915_drv.h

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28

drivers/gpu/drm/i915/intel_pm.c

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