From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 7 Jan 2014 14:14:08 +0000 (+0200)
Subject: drm/i915: Fix watermark code for BDW
X-Git-Tag: firefly_0821_release~176^2~4523^2~16^2~25
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a42a57196ad897e7686944488b23f5d2b6496372;p=firefly-linux-kernel-4.4.55.git

drm/i915: Fix watermark code for BDW

Looks like I forgot to update the ILK/SNB/IVB watermark patches to deal
with BDW. Add the relevant BDW checks to make sure we take the HSW
codepaths on BDW as well.

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>
---

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index bbd6503a4cf5..78503157daf2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2012,7 +2012,7 @@ static void intel_read_wm_latency(struct drm_device *dev, uint16_t wm[5])
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (IS_HASWELL(dev)) {
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
 		uint64_t sskpd = I915_READ64(MCH_SSKPD);
 
 		wm[0] = (sskpd >> 56) & 0xFF;
@@ -2060,7 +2060,7 @@ static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5])
 static int ilk_wm_max_level(const struct drm_device *dev)
 {
 	/* how many WM levels are we expecting */
-	if (IS_HASWELL(dev))
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 		return 4;
 	else if (INTEL_INFO(dev)->gen >= 6)
 		return 3;
@@ -2179,7 +2179,7 @@ static bool intel_compute_pipe_wm(struct drm_crtc *crtc,
 		ilk_compute_wm_level(dev_priv, level, params,
 				     &pipe_wm->wm[level]);
 
-	if (IS_HASWELL(dev))
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 		pipe_wm->linetime = hsw_compute_linetime_wm(dev, crtc);
 
 	/* At least LP0 must be valid */
@@ -2274,7 +2274,7 @@ static unsigned int ilk_wm_lp_latency(struct drm_device *dev, int level)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (IS_HASWELL(dev))
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 		return 2 * level;
 	else
 		return dev_priv->wm.pri_latency[level];
@@ -2489,7 +2489,7 @@ static void ilk_write_wm_values(struct drm_i915_private *dev_priv,
 		I915_WRITE(PIPE_WM_LINETIME(PIPE_C), results->wm_linetime[2]);
 
 	if (dirty & WM_DIRTY_DDB) {
-		if (IS_HASWELL(dev)) {
+		if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
 			val = I915_READ(WM_MISC);
 			if (results->partitioning == INTEL_DDB_PART_1_2)
 				val &= ~WM_MISC_DATA_PARTITION_5_6;
@@ -2628,7 +2628,7 @@ static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc)
 	};
 
 	hw->wm_pipe[pipe] = I915_READ(wm0_pipe_reg[pipe]);
-	if (IS_HASWELL(dev))
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 		hw->wm_linetime[pipe] = I915_READ(PIPE_WM_LINETIME(pipe));
 
 	if (intel_crtc_active(crtc)) {
@@ -2675,7 +2675,7 @@ void ilk_wm_get_hw_state(struct drm_device *dev)
 	hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB);
 	hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB);
 
-	if (IS_HASWELL(dev))
+	if (IS_HASWELL(dev) || IS_BROADWELL(dev))
 		hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ?
 			INTEL_DDB_PART_5_6 : INTEL_DDB_PART_1_2;
 	else if (IS_IVYBRIDGE(dev))