drm/i915: s/disable_lp_wm/disable_cxsr/

The ilk+ disable_lp_wm boolean has the exact same role as
disable_cxsr for gmch platforms. The documentation also
still talks about CxSR on ilk+ even theough the way you
control it has now change to involve toggling the LP watermarks.
Get rid of disable_lp_wm and just use disable_cxsr for ilk+
as well.

TODO: Unify even more to not have any gmch vs. ilk+
      details in high level modeset code...

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240916162413.8555-7-ville.syrjala@linux.intel.com
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>

6 files changed, 10 insertions, 14 deletions

diff --git a/drivers/gpu/drm/i915/display/i9xx_wm.c b/drivers/gpu/drm/i915/display/i9xx_wm.c
index 999fc085af28..5b5f2875ea40 100644
--- a/drivers/gpu/drm/i915/display/i9xx_wm.c
+++ b/drivers/gpu/drm/i915/display/i9xx_wm.c
@@ -3397,7 +3397,7 @@ static void ilk_write_wm_values(struct drm_i915_private *dev_priv,
 	dev_priv->display.wm.hw = *results;
 }
 
-bool ilk_disable_lp_wm(struct drm_i915_private *dev_priv)
+bool ilk_disable_cxsr(struct drm_i915_private *dev_priv)
 {
 	return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
 }
diff --git a/drivers/gpu/drm/i915/display/i9xx_wm.h b/drivers/gpu/drm/i915/display/i9xx_wm.h
index de0920730ab2..06ac37c6c94b 100644
--- a/drivers/gpu/drm/i915/display/i9xx_wm.h
+++ b/drivers/gpu/drm/i915/display/i9xx_wm.h
@@ -13,12 +13,12 @@ struct intel_crtc_state;
 struct intel_plane_state;
 
 #ifdef I915
-bool ilk_disable_lp_wm(struct drm_i915_private *i915);
+bool ilk_disable_cxsr(struct drm_i915_private *i915);
 void ilk_wm_sanitize(struct drm_i915_private *i915);
 bool intel_set_memory_cxsr(struct drm_i915_private *i915, bool enable);
 void i9xx_wm_init(struct drm_i915_private *i915);
 #else
-static inline bool ilk_disable_lp_wm(struct drm_i915_private *i915)
+static inline bool ilk_disable_cxsr(struct drm_i915_private *i915)
 {
 	return false;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
index 12d6ed940751..6cac26af128c 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -266,7 +266,6 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
 	crtc_state->update_pipe = false;
 	crtc_state->update_m_n = false;
 	crtc_state->update_lrr = false;
-	crtc_state->disable_lp_wm = false;
 	crtc_state->disable_cxsr = false;
 	crtc_state->update_wm_pre = false;
 	crtc_state->update_wm_post = false;
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index b2cc7f1dee0c..3505a5b52eb9 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -471,9 +471,9 @@ static bool i9xx_must_disable_cxsr(const struct intel_crtc_state *new_crtc_state
 	return old_ctl != new_ctl;
 }
 
-static bool ilk_must_disable_lp_wm(const struct intel_crtc_state *new_crtc_state,
-				   const struct intel_plane_state *old_plane_state,
-				   const struct intel_plane_state *new_plane_state)
+static bool ilk_must_disable_cxsr(const struct intel_crtc_state *new_crtc_state,
+				  const struct intel_plane_state *old_plane_state,
+				  const struct intel_plane_state *new_plane_state)
 {
 	struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
 	bool old_visible = old_plane_state->uapi.visible;
@@ -588,8 +588,8 @@ static int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_cr
 		new_crtc_state->disable_cxsr = true;
 
 	if ((IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv) || IS_IVYBRIDGE(dev_priv)) &&
-	    ilk_must_disable_lp_wm(new_crtc_state, old_plane_state, new_plane_state))
-		new_crtc_state->disable_lp_wm = true;
+	    ilk_must_disable_cxsr(new_crtc_state, old_plane_state, new_plane_state))
+		new_crtc_state->disable_cxsr = true;
 
 	if (intel_plane_do_async_flip(plane, old_crtc_state, new_crtc_state)) {
 		new_crtc_state->do_async_flip = true;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index ca98ecbf24a9..f7667931f9d9 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1324,8 +1324,8 @@ static void intel_pre_plane_update(struct intel_atomic_state *state,
 	 *
 	 * WaCxSRDisabledForSpriteScaling:ivb
 	 */
-	if (old_crtc_state->hw.active &&
-	    new_crtc_state->disable_lp_wm && ilk_disable_lp_wm(dev_priv))
+	if (!HAS_GMCH(dev_priv) && old_crtc_state->hw.active &&
+	    new_crtc_state->disable_cxsr && ilk_disable_cxsr(dev_priv))
 		intel_crtc_wait_for_next_vblank(crtc);
 
 	/*
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index b1eed230285a..7ff97e5b83dd 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1143,9 +1143,6 @@ struct intel_crtc_state {
 	/* w/a for waiting 2 vblanks during crtc enable */
 	enum pipe hsw_workaround_pipe;
 
-	/* IVB sprite scaling w/a (WaCxSRDisabledForSpriteScaling:ivb) */
-	bool disable_lp_wm;
-
 	struct intel_crtc_wm_state wm;
 
 	int min_cdclk[I915_MAX_PLANES];