While pps_init_delays() debug logs the power cycle delay, also debug log the actual remaining time to wait in wait_panel_power_cycle(). Note that this still isn't the full picture; the power sequencer may still wait after this one. Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13007 Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> --- Cc: Paul Menzel <pmenzel@xxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_pps.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c index 7784b3b760db..bfda52850150 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.c +++ b/drivers/gpu/drm/i915/display/intel_pps.c @@ -668,23 +668,24 @@ static void wait_panel_power_cycle(struct intel_dp *intel_dp) struct intel_display *display = to_intel_display(intel_dp); struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); ktime_t panel_power_on_time; - s64 panel_power_off_duration; - - drm_dbg_kms(display->drm, - "[ENCODER:%d:%s] %s wait for panel power cycle\n", - dig_port->base.base.base.id, dig_port->base.base.name, - pps_name(intel_dp)); + s64 panel_power_off_duration, remaining; /* take the difference of current time and panel power off time * and then make panel wait for power_cycle if needed. */ panel_power_on_time = ktime_get_boottime(); panel_power_off_duration = ktime_ms_delta(panel_power_on_time, intel_dp->pps.panel_power_off_time); + remaining = max(0, intel_dp->pps.panel_power_cycle_delay - panel_power_off_duration); + + drm_dbg_kms(display->drm, + "[ENCODER:%d:%s] %s wait for panel power cycle (%lld ms remaining)\n", + dig_port->base.base.base.id, dig_port->base.base.name, + pps_name(intel_dp), remaining); + /* When we disable the VDD override bit last we have to do the manual * wait. */ - if (panel_power_off_duration < (s64)intel_dp->pps.panel_power_cycle_delay) - wait_remaining_ms_from_jiffies(jiffies, - intel_dp->pps.panel_power_cycle_delay - panel_power_off_duration); + if (remaining) + wait_remaining_ms_from_jiffies(jiffies, remaining); wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); } -- 2.39.5
