If the panel is powered up, there's no need to delay for the 'off'
interval when turning the panel on.
Signed-off-by: Keith Packard <keithp@xxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f223504..a01cc2a 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -856,7 +856,16 @@ static void ironlake_wait_panel_off(struct intel_dp *intel_dp)
{
unsigned long off_time;
unsigned long delay;
+
DRM_DEBUG_KMS("Wait for panel power off time\n");
+
+ if (ironlake_edp_have_panel_power(intel_dp) ||
+ ironlake_edp_have_panel_vdd(intel_dp))
+ {
+ DRM_DEBUG_KMS("Panel still on, no delay needed\n");
+ return;
+ }
+
off_time = intel_dp->panel_off_jiffies + msecs_to_jiffies(intel_dp->panel_power_down_delay);
if (time_after(jiffies, off_time)) {
DRM_DEBUG_KMS("Time already passed");
--
1.7.6.3
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