From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
If we're disabling the VDD override bit and the panel is enabled, we
don't need to wait for anything. If the panel is disabled, then we
need to actually wait for panel_power_cycle_delay, not
panel_power_down_delay, because the power down delay was already
respected when we disabled the panel.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index fe327ce..a2aace2 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1142,7 +1142,9 @@ static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp)
/* Make sure sequencer is idle before allowing subsequent activity */
DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n",
I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg));
- msleep(intel_dp->panel_power_down_delay);
+
+ if ((pp & POWER_TARGET_ON) == 0)
+ msleep(intel_dp->panel_power_cycle_delay);
}
}
--
1.8.3.1
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