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drm/i915/dmc: Reduce wakelock hold time

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__intel_dmc_wl_release() schedules delayed work which releases the DMC
wakelock after a fixed timeout of 50 ms. Until the delayed work runs,
the wakelock remains held and prevents entry into deeper DC states.

Reduce DMC_WAKELOCK_HOLD_TIME from 50 ms to 5 ms.
This should allow the system to enter deeper DC states sooner once MMIO
activity settles down.

Changes in v2:
- Drop detailed explanation from commit message
  and keep it concise (Suraj Kandpal, Luca Coelho)

Signed-off-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260407105102.3730973-1-dibin.moolakadan.subrahmanian@intel.com
This commit is contained in:
Dibin Moolakadan Subrahmanian 2026-04-07 16:21:02 +05:30 committed by Suraj Kandpal
parent 3320215571
commit acfc688bc5
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/intel_dmc_wl.c
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@ -46,7 +46,7 @@
* atomic variant of waiting MMIO.
*/
#define DMC_WAKELOCK_CTL_TIMEOUT_US 5000
#define DMC_WAKELOCK_HOLD_TIME 50
#define DMC_WAKELOCK_HOLD_TIME 5
/*
* Possible non-negative values for the enable_dmc_wl param.