drm/i915/chv: Use RMW to toggle swing calc init

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The spec only tells us to set individual bits here and there. So we use
RMW for most things. Do the same for the swing calc init.

Eventually we should optimize things to just blast the final value in
with group access whenever possible. But to do that someone needs to
take a good look at what's the reset value for each registers, and
possibly if the BIOS manages to frob with some of them. For now
use RMW access always.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2014-04-09 13:29:04 +03:00 • committed by Daniel Vetter

parent f72df8dbe2

commit 1966e59ec1

3 changed files with 35 additions and 7 deletions

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7

drivers/gpu/drm/i915/i915_reg.h

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17

drivers/gpu/drm/i915/intel_dp.c

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18

drivers/gpu/drm/i915/intel_hdmi.c

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