diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_pps.c | 8 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 914161d7d122..67089711d9e2 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4877,6 +4877,12 @@ void intel_dp_encoder_flush_work(struct drm_encoder *encoder) intel_pps_vdd_off_sync(intel_dp); + /* + * Ensure power off delay is respected on module remove, so that we can + * reduce delays at driver probe. See pps_init_timestamps(). + */ + intel_pps_wait_power_cycle(intel_dp); + intel_dp_aux_fini(intel_dp); } diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c index 81ee7f3aadf6..9bbf41a076f7 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.c +++ b/drivers/gpu/drm/i915/display/intel_pps.c @@ -1100,7 +1100,13 @@ bool intel_pps_have_panel_power_or_vdd(struct intel_dp *intel_dp) static void pps_init_timestamps(struct intel_dp *intel_dp) { - intel_dp->pps.panel_power_off_time = ktime_get_boottime(); + /* + * Initialize panel power off time to 0, assuming panel power could have + * been toggled between kernel boot and now only by a previously loaded + * and removed i915, which has already ensured sufficient power off + * delay at module remove. + */ + intel_dp->pps.panel_power_off_time = 0; intel_dp->pps.last_power_on = jiffies; intel_dp->pps.last_backlight_off = jiffies; } |