drm/i915/dsb: functions to enable/disable DSB engine.

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DSB will be used for performance improvement for some special scenario.
DSB engine will be enabled based on need and after completion of its work
will be disabled. Api added for enable/disable operation by using DSB_CTRL
register.

v1: Initial version.
v2: POSTING_READ added after writing control register. (Shashank)
v3: cosmetic changes done. (Shashank)

Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920115930.27829-7-animesh.manna@intel.com

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Animesh Manna 2019-09-20 17:29:26 +05:30 • committed by Jani Nikula

parent a6e58d9a2e

commit f7619c4798

2 changed files with 41 additions and 0 deletions

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40

drivers/gpu/drm/i915/display/intel_dsb.c

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1

drivers/gpu/drm/i915/i915_reg.h

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