[PATCH 12/12] drm/i915: Remove the remnants of the ilk+ LP0 wm hack

From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 12/12] drm/i915: Remove the remnants of the ilk+ LP0 wm hack
Date: Wed, 10 Oct 2018 16:04:54 +0300	[thread overview]
Message-ID: <20181010130454.28557-13-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20181010130454.28557-1-ville.syrjala@linux.intel.com>

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

In the past we couldn't properly reject the operation if the level 0
watermarks exceeded the limits, thus we had a hack to clamp the values.
commit 86c8bbbeb8d1 ("drm/i915: Calculate ILK-style watermarks during
atomic check (v3)") changed the behaviour to fail the operation
instead, but neglected to remove all the code for the hack.
Remove the leftovers.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 28 +---------------------------
 1 file changed, 1 insertion(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index dd5edd984fb5..0dce22fcda2d 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2746,8 +2746,6 @@ static bool ilk_validate_wm_level(int level,
 				  const struct ilk_wm_maximums *max,
 				  struct intel_wm_level *result)
 {
-	bool ret;
-
 	/* already determined to be invalid? */
 	if (!result->enable)
 		return false;
@@ -2756,31 +2754,7 @@ static bool ilk_validate_wm_level(int level,
 			 result->spr_val <= max->spr &&
 			 result->cur_val <= max->cur;
 
-	ret = result->enable;
-
-	/*
-	 * HACK until we can pre-compute everything,
-	 * and thus fail gracefully if LP0 watermarks
-	 * are exceeded...
-	 */
-	if (level == 0 && !result->enable) {
-		if (result->pri_val > max->pri)
-			DRM_DEBUG_KMS("Primary WM%d too large %u (max %u)\n",
-				      level, result->pri_val, max->pri);
-		if (result->spr_val > max->spr)
-			DRM_DEBUG_KMS("Sprite WM%d too large %u (max %u)\n",
-				      level, result->spr_val, max->spr);
-		if (result->cur_val > max->cur)
-			DRM_DEBUG_KMS("Cursor WM%d too large %u (max %u)\n",
-				      level, result->cur_val, max->cur);
-
-		result->pri_val = min_t(uint32_t, result->pri_val, max->pri);
-		result->spr_val = min_t(uint32_t, result->spr_val, max->spr);
-		result->cur_val = min_t(uint32_t, result->cur_val, max->cur);
-		result->enable = true;
-	}
-
-	return ret;
+	return result->enable;
 }
 
 static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
-- 
2.18.1

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