[Intel-gfx] [PATCH 1/5] drm/i915: Enable transition watermarks for glk

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

We are mistakenly skipping transition watermarks on glk. Fix
up the condition for glk, and toss in the w/a name from
the database.

v2: Reorder the ipc enabled vs. platform check to be more sensible

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com> #v1
---
 drivers/gpu/drm/i915/intel_pm.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 4c0e43caa5cd..581f90e12f93 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4859,14 +4859,17 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *cstate,
 	const u16 trans_amount = 10; /* This is configurable amount */
 	u16 wm0_sel_res_b, trans_offset_b, res_blocks;
 
-	/* Transition WM are not recommended by HW team for GEN9 */
-	if (INTEL_GEN(dev_priv) <= 9)
-		return;
-
 	/* Transition WM don't make any sense if ipc is disabled */
 	if (!dev_priv->ipc_enabled)
 		return;
 
+	/*
+	 * WaDisableTWM:skl,kbl,cfl,bxt
+	 * Transition WM are not recommended by HW team for GEN9
+	 */
+	if (IS_GEN9_BC(dev_priv) || IS_BROXTON(dev_priv))
+		return;
+
 	trans_min = 14;
 	if (INTEL_GEN(dev_priv) >= 11)
 		trans_min = 4;
-- 
2.19.2