patches.baytrail/1086-drm-i915-Move-LP1-watermark-merging-out-from-hsw_com.patch

From 6ba819b40f7d1e34a19093a03a29c5822a2fb25d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Wed, 9 Oct 2013 19:17:57 +0300
Subject: drm/i915: Move LP1+ watermark merging out from
 hsw_compute_wm_results()
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I want to convert hsw_find_best_result() to use intel_pipe_wm, so we
need to move the merging to happen outside hsw_compute_wm_results().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 0362c7816c8ad5d838ecd93f5526c1c725a1a8fd)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 3699f1d574c5..71524ae0f07a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2716,26 +2716,23 @@ static void ilk_wm_merge(struct drm_device *dev,
 }
 
 static void hsw_compute_wm_results(struct drm_device *dev,
-				   const struct hsw_wm_maximums *lp_maximums,
+				   const struct intel_pipe_wm *merged,
 				   struct hsw_wm_values *results)
 {
 	struct intel_crtc *intel_crtc;
 	int level, wm_lp;
-	struct intel_pipe_wm merged = {};
-
-	ilk_wm_merge(dev, lp_maximums, &merged);
 
 	memset(results, 0, sizeof(*results));
 
-	results->enable_fbc_wm = merged.fbc_wm_enabled;
+	results->enable_fbc_wm = merged->fbc_wm_enabled;
 
 	/* LP1+ register values */
 	for (wm_lp = 1; wm_lp <= 3; wm_lp++) {
 		const struct intel_wm_level *r;
 
-		level = wm_lp + (wm_lp >= 2 && merged.wm[4].enable);
+		level = wm_lp + (wm_lp >= 2 && merged->wm[4].enable);
 
-		r = &merged.wm[level];
+		r = &merged->wm[level];
 		if (!r->enable)
 			break;
 
@@ -2897,6 +2894,7 @@ static void haswell_update_wm(struct drm_crtc *crtc)
 	struct hsw_wm_values results_1_2, results_5_6, *best_results;
 	enum intel_ddb_partitioning partitioning;
 	struct intel_pipe_wm pipe_wm = {};
+	struct intel_pipe_wm lp_wm_1_2 = {}, lp_wm_5_6 = {};
 
 	hsw_compute_wm_parameters(crtc, &params, &lp_max_1_2, &lp_max_5_6);
 
@@ -2907,9 +2905,12 @@ static void haswell_update_wm(struct drm_crtc *crtc)
 
 	intel_crtc->wm.active = pipe_wm;
 
-	hsw_compute_wm_results(dev, &lp_max_1_2, &results_1_2);
+	ilk_wm_merge(dev, &lp_max_1_2, &lp_wm_1_2);
+	ilk_wm_merge(dev, &lp_max_5_6, &lp_wm_5_6);
+
+	hsw_compute_wm_results(dev, &lp_wm_1_2, &results_1_2);
 	if (lp_max_1_2.pri != lp_max_5_6.pri) {
-		hsw_compute_wm_results(dev, &lp_max_5_6, &results_5_6);
+		hsw_compute_wm_results(dev, &lp_wm_5_6, &results_5_6);
 		best_results = hsw_find_best_result(&results_1_2, &results_5_6);
 	} else {
 		best_results = &results_1_2;
-- 
1.8.5.rc3