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| author |   Animesh Manna <animesh.manna@intel.com> | 2019-09-20 17:29:26 +0530 |
|---|---|---|
| committer |   Jani Nikula <jani.nikula@intel.com> | 2019-09-23 10:11:48 +0300 |
| commit | f7619c47983431fc5ddfa30d8f921a6a40e0223a (patch) | |
| tree | ebf9212864d0c57f5d5e41b1b188e2d4b5a45217 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915/dsb: Check DSB engine status. (diff) | |
| download | linux-dev-f7619c47983431fc5ddfa30d8f921a6a40e0223a.tar.xz linux-dev-f7619c47983431fc5ddfa30d8f921a6a40e0223a.zip | |
drm/i915/dsb: functions to enable/disable DSB engine.
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
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index fba3e8b26296..5fcbaaa8f3c6 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -11703,6 +11703,7 @@ enum skl_power_gate { #define DSBSL_INSTANCE(pipe, id) (_DSBSL_INSTANCE_BASE + \ (pipe) * 0x1000 + (id) * 100) #define DSB_CTRL(pipe, id) _MMIO(DSBSL_INSTANCE(pipe, id) + 0x8) +#define DSB_ENABLE (1 << 31) #define DSB_STATUS (1 << 0) #endif /* _I915_REG_H_ */ |