[Intel-gfx] [PATCH 1/4] drm/i915: Increase PSR Idle Frame to 2.

[Rodrigo Vivi]

With Software tracking we are going to PSR sooner than we should and staying
with blank screens in many cases.

Using 2 identical frames to detect idleness is safier.

Discovered and validated with refactored igt/kms_sink_psr_crc.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f79473b..a796831 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1813,7 +1813,7 @@ static void intel_edp_psr_enable_source(struct intel_dp *intel_dp)
 	struct drm_device *dev = dig_port->base.base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	uint32_t max_sleep_time = 0x1f;
-	uint32_t idle_frames = 1;
+	uint32_t idle_frames = 2;
 	uint32_t val = 0x0;
 	const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
 	bool only_standby = false;
-- 
1.9.3