drm/i915: Make pre-skl sprite plane registers unlocked

Drop the locks around sprite 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@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220210062403.18690-6-ville.syrjala@linux.intel.comReviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

drivers/gpu/drm/i915/display/intel_sprite.c

@@ -430,9 +430,6 @@ vlv_sprite_update_noarm(struct intel_plane *plane,
 	int crtc_y = plane_state->uapi.dst.y1;
 	u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
 	u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	intel_de_write_fw(dev_priv, SPSTRIDE(pipe, plane_id),
 			  plane_state->view.color_plane[0].mapping_stride);
@@ -440,8 +437,6 @@ vlv_sprite_update_noarm(struct intel_plane *plane,
 			  SP_POS_Y(crtc_y) | SP_POS_X(crtc_x));
 	intel_de_write_fw(dev_priv, SPSIZE(pipe, plane_id),
 			  SP_HEIGHT(crtc_h - 1) | SP_WIDTH(crtc_w - 1));
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -457,14 +452,11 @@ vlv_sprite_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 sprctl, linear_offset;
-	unsigned long irqflags;
 
 	sprctl = plane_state->ctl | vlv_sprite_ctl_crtc(crtc_state);
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B)
 		chv_sprite_update_csc(plane_state);
 
@@ -494,8 +486,6 @@ vlv_sprite_update_arm(struct intel_plane *plane,
 
 	vlv_sprite_update_clrc(plane_state);
 	vlv_sprite_update_gamma(plane_state);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -505,14 +495,9 @@ vlv_sprite_disable_arm(struct intel_plane *plane,
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum pipe pipe = plane->pipe;
 	enum plane_id plane_id = plane->id;
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	intel_de_write_fw(dev_priv, SPCNTR(pipe, plane_id), 0);
 	intel_de_write_fw(dev_priv, SPSURF(pipe, plane_id), 0);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static bool
@@ -862,15 +847,12 @@ ivb_sprite_update_noarm(struct intel_plane *plane,
 	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
 	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
 	u32 sprscale = 0;
-	unsigned long irqflags;
 
 	if (crtc_w != src_w || crtc_h != src_h)
 		sprscale = SPRITE_SCALE_ENABLE |
 			SPRITE_SRC_WIDTH(src_w - 1) |
 			SPRITE_SRC_HEIGHT(src_h - 1);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, SPRSTRIDE(pipe),
 			  plane_state->view.color_plane[0].mapping_stride);
 	intel_de_write_fw(dev_priv, SPRPOS(pipe),
@@ -879,8 +861,6 @@ ivb_sprite_update_noarm(struct intel_plane *plane,
 			  SPRITE_HEIGHT(crtc_h - 1) | SPRITE_WIDTH(crtc_w - 1));
 	if (IS_IVYBRIDGE(dev_priv))
 		intel_de_write_fw(dev_priv, SPRSCALE(pipe), sprscale);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -895,14 +875,11 @@ ivb_sprite_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 sprctl, linear_offset;
-	unsigned long irqflags;
 
 	sprctl = plane_state->ctl | ivb_sprite_ctl_crtc(crtc_state);
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	if (key->flags) {
 		intel_de_write_fw(dev_priv, SPRKEYVAL(pipe), key->min_value);
 		intel_de_write_fw(dev_priv, SPRKEYMSK(pipe),
@@ -931,8 +908,6 @@ ivb_sprite_update_arm(struct intel_plane *plane,
 			  intel_plane_ggtt_offset(plane_state) + sprsurf_offset);
 
 	ivb_sprite_update_gamma(plane_state);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -941,17 +916,12 @@ ivb_sprite_disable_arm(struct intel_plane *plane,
 {
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum pipe pipe = plane->pipe;
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	intel_de_write_fw(dev_priv, SPRCTL(pipe), 0);
 	/* Disable the scaler */
 	if (IS_IVYBRIDGE(dev_priv))
 		intel_de_write_fw(dev_priv, SPRSCALE(pipe), 0);
 	intel_de_write_fw(dev_priv, SPRSURF(pipe), 0);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static bool
@@ -1204,15 +1174,12 @@ g4x_sprite_update_noarm(struct intel_plane *plane,
 	u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
 	u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
 	u32 dvsscale = 0;
-	unsigned long irqflags;
 
 	if (crtc_w != src_w || crtc_h != src_h)
 		dvsscale = DVS_SCALE_ENABLE |
 			DVS_SRC_WIDTH(src_w - 1) |
 			DVS_SRC_HEIGHT(src_h - 1);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	intel_de_write_fw(dev_priv, DVSSTRIDE(pipe),
 			  plane_state->view.color_plane[0].mapping_stride);
 	intel_de_write_fw(dev_priv, DVSPOS(pipe),
@@ -1220,8 +1187,6 @@ g4x_sprite_update_noarm(struct intel_plane *plane,
 	intel_de_write_fw(dev_priv, DVSSIZE(pipe),
 			  DVS_HEIGHT(crtc_h - 1) | DVS_WIDTH(crtc_w - 1));
 	intel_de_write_fw(dev_priv, DVSSCALE(pipe), dvsscale);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1236,14 +1201,11 @@ g4x_sprite_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 dvscntr, linear_offset;
-	unsigned long irqflags;
 
 	dvscntr = plane_state->ctl | g4x_sprite_ctl_crtc(crtc_state);
 
 	linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
 
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
-
 	if (key->flags) {
 		intel_de_write_fw(dev_priv, DVSKEYVAL(pipe), key->min_value);
 		intel_de_write_fw(dev_priv, DVSKEYMSK(pipe),
@@ -1267,8 +1229,6 @@ g4x_sprite_update_arm(struct intel_plane *plane,
 		g4x_sprite_update_gamma(plane_state);
 	else
 		ilk_sprite_update_gamma(plane_state);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static void
@@ -1277,16 +1237,11 @@ g4x_sprite_disable_arm(struct intel_plane *plane,
 {
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum pipe pipe = plane->pipe;
-	unsigned long irqflags;
-
-	spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
 
 	intel_de_write_fw(dev_priv, DVSCNTR(pipe), 0);
 	/* Disable the scaler */
 	intel_de_write_fw(dev_priv, DVSSCALE(pipe), 0);
 	intel_de_write_fw(dev_priv, DVSSURF(pipe), 0);
-
-	spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
 }
 
 static bool