[Intel-gfx] [PATCH] drm/i915/display/psr: Disable DC3CO when the PSR2 is used.

[Gwan-gyeong Mun]

Due to the changed sequence of activating/deactivating DC3CO, disable
DC3CO until the changed dc3co activating/deactivating sequence is applied.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/3134
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 1d561812fcad..32d3d56259c2 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -654,6 +654,13 @@ tgl_dc3co_exitline_compute_config(struct intel_dp *intel_dp,
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 exit_scanlines;
 
+	/*
+	 * FIXME: Due to the changed sequence of activating/deactivating DC3CO,
+	 * disable DC3CO until the changed dc3co activating/deactivating sequence
+	 * is applied. B.Specs:49196
+	 */
+	return;
+
 	/*
 	 * DMC's DC3CO exit mechanism has an issue with Selective Fecth
 	 * TODO: when the issue is addressed, this restriction should be removed.
-- 
2.30.1