[Intel-gfx] [PATCH 3/6] drm/i915: Make skl+ universal plane registers unlocked

[Ville Syrjala]

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

Drop the locks around most universal plane register writes.
The lock isn't needed since each plane's register are neatly
contained on their own cachelines.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 .../drm/i915/display/skl_universal_plane.c    | 35 -------------------
 1 file changed, 35 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 07c64ea5b362..c2596b6aa3ab 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -615,16 +615,11 @@ skl_plane_disable_arm(struct intel_plane *plane,
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum plane_id plane_id = plane->id;
 	enum pipe pipe = plane->pipe;
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	skl_write_plane_wm(plane, crtc_state);
 
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -634,9 +629,6 @@ icl_plane_disable_arm(struct intel_plane *plane,
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum plane_id plane_id = plane->id;
 	enum pipe pipe = plane->pipe;
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	if (icl_is_hdr_plane(dev_priv, plane_id))
 		intel_de_write_fw(dev_priv, PLANE_CUS_CTL(pipe, plane_id), 0);
@@ -646,8 +638,6 @@ icl_plane_disable_arm(struct intel_plane *plane,
 	intel_psr2_disable_plane_sel_fetch(plane, crtc_state);
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), 0);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id), 0);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static bool
@@ -1105,7 +1095,6 @@ skl_plane_update_noarm(struct intel_plane *plane,
 	int crtc_y = plane_state->uapi.dst.y1;
 	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
 	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
-	unsigned long irqflags;
 
 	/* The scaler will handle the output position */
 	if (plane_state->scaler_id >= 0) {
@@ -1113,8 +1102,6 @@ skl_plane_update_noarm(struct intel_plane *plane,
 		crtc_y = 0;
 	}
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, PLANE_STRIDE(pipe, plane_id),
 			  PLANE_STRIDE_(stride));
 	intel_de_write_fw(dev_priv, PLANE_POS(pipe, plane_id),
@@ -1123,8 +1110,6 @@ skl_plane_update_noarm(struct intel_plane *plane,
 			  PLANE_HEIGHT(src_h - 1) | PLANE_WIDTH(src_w - 1));
 
 	skl_write_plane_wm(plane, crtc_state);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1138,7 +1123,6 @@ skl_plane_update_arm(struct intel_plane *plane,
 	u32 x = plane_state->view.color_plane[0].x;
 	u32 y = plane_state->view.color_plane[0].y;
 	u32 plane_ctl, plane_color_ctl = 0;
-	unsigned long irqflags;
 
 	plane_ctl = plane_state->ctl |
 		skl_plane_ctl_crtc(crtc_state);
@@ -1147,8 +1131,6 @@ skl_plane_update_arm(struct intel_plane *plane,
 		plane_color_ctl = plane_state->color_ctl |
 			glk_plane_color_ctl_crtc(crtc_state);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, PLANE_KEYVAL(pipe, plane_id), skl_plane_keyval(plane_state));
 	intel_de_write_fw(dev_priv, PLANE_KEYMSK(pipe, plane_id), skl_plane_keymsk(plane_state));
 	intel_de_write_fw(dev_priv, PLANE_KEYMAX(pipe, plane_id), skl_plane_keymax(plane_state));
@@ -1184,8 +1166,6 @@ skl_plane_update_arm(struct intel_plane *plane,
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
 			  skl_plane_surf(plane_state, 0));
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1206,7 +1186,6 @@ icl_plane_update_noarm(struct intel_plane *plane,
 	int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
 	int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
 	u32 plane_color_ctl;
-	unsigned long irqflags;
 
 	plane_color_ctl = plane_state->color_ctl |
 		glk_plane_color_ctl_crtc(crtc_state);
@@ -1217,8 +1196,6 @@ icl_plane_update_noarm(struct intel_plane *plane,
 		crtc_y = 0;
 	}
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, PLANE_STRIDE(pipe, plane_id),
 			  PLANE_STRIDE_(stride));
 	intel_de_write_fw(dev_priv, PLANE_POS(pipe, plane_id),
@@ -1262,8 +1239,6 @@ icl_plane_update_noarm(struct intel_plane *plane,
 		icl_plane_csc_load_black(plane);
 
 	intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1276,13 +1251,10 @@ icl_plane_update_arm(struct intel_plane *plane,
 	enum pipe pipe = plane->pipe;
 	int color_plane = icl_plane_color_plane(plane_state);
 	u32 plane_ctl;
-	unsigned long irqflags;
 
 	plane_ctl = plane_state->ctl |
 		skl_plane_ctl_crtc(crtc_state);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	/*
 	 * Enable the scaler before the plane so that we don't
 	 * get a catastrophic underrun even if the two operations
@@ -1301,8 +1273,6 @@ icl_plane_update_arm(struct intel_plane *plane,
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
 			  skl_plane_surf(plane_state, color_plane));
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1312,7 +1282,6 @@ skl_plane_async_flip(struct intel_plane *plane,
 		     bool async_flip)
 {
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
-	unsigned long irqflags;
 	enum plane_id plane_id = plane->id;
 	enum pipe pipe = plane->pipe;
 	u32 plane_ctl = plane_state->ctl;
@@ -1322,13 +1291,9 @@ skl_plane_async_flip(struct intel_plane *plane,
 	if (async_flip)
 		plane_ctl |= PLANE_CTL_ASYNC_FLIP;
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, PLANE_CTL(pipe, plane_id), plane_ctl);
 	intel_de_write_fw(dev_priv, PLANE_SURF(pipe, plane_id),
 			  skl_plane_surf(plane_state, 0));
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static bool intel_format_is_p01x(u32 format)
-- 
2.32.0