[PATCH -fixes 2/3] drm/i915: Clean up skl_program_scaler()

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Remove the "sizes are 0 based" stuff that is not even true for the
scaler.

v2: Rebase

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20181101151736.20522-1-ville.syrjala@xxxxxxxxxxxxxxx
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
(cherry picked from commit d0105af939769393d6447a04cee2d1ae12e3f09a)
---
 drivers/gpu/drm/i915/intel_sprite.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 873adcc20109..fa7eaace5f92 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -303,12 +303,11 @@ skl_plane_max_stride(struct intel_plane *plane,
 }
 
 static void
-skl_program_scaler(struct drm_i915_private *dev_priv,
-		   struct intel_plane *plane,
+skl_program_scaler(struct intel_plane *plane,
 		   const struct intel_crtc_state *crtc_state,
 		   const struct intel_plane_state *plane_state)
 {
-	enum plane_id plane_id = plane->id;
+	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	enum pipe pipe = plane->pipe;
 	int scaler_id = plane_state->scaler_id;
 	const struct intel_scaler *scaler =
@@ -320,10 +319,6 @@ skl_program_scaler(struct drm_i915_private *dev_priv,
 	u16 y_hphase, uv_rgb_hphase;
 	u16 y_vphase, uv_rgb_vphase;
 
-	/* Sizes are 0 based */
-	crtc_w--;
-	crtc_h--;
-
 	/* TODO: handle sub-pixel coordinates */
 	if (plane_state->base.fb->format->format == DRM_FORMAT_NV12) {
 		y_hphase = skl_scaler_calc_phase(1, false);
@@ -342,15 +337,14 @@ skl_program_scaler(struct drm_i915_private *dev_priv,
 	}
 
 	I915_WRITE_FW(SKL_PS_CTRL(pipe, scaler_id),
-		      PS_SCALER_EN | PS_PLANE_SEL(plane_id) | scaler->mode);
+		      PS_SCALER_EN | PS_PLANE_SEL(plane->id) | scaler->mode);
 	I915_WRITE_FW(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
 	I915_WRITE_FW(SKL_PS_VPHASE(pipe, scaler_id),
 		      PS_Y_PHASE(y_vphase) | PS_UV_RGB_PHASE(uv_rgb_vphase));
 	I915_WRITE_FW(SKL_PS_HPHASE(pipe, scaler_id),
 		      PS_Y_PHASE(y_hphase) | PS_UV_RGB_PHASE(uv_rgb_hphase));
 	I915_WRITE_FW(SKL_PS_WIN_POS(pipe, scaler_id), (crtc_x << 16) | crtc_y);
-	I915_WRITE_FW(SKL_PS_WIN_SZ(pipe, scaler_id),
-		      ((crtc_w + 1) << 16)|(crtc_h + 1));
+	I915_WRITE_FW(SKL_PS_WIN_SZ(pipe, scaler_id), (crtc_w << 16) | crtc_h);
 }
 
 void
@@ -399,9 +393,8 @@ skl_update_plane(struct intel_plane *plane,
 		      (plane_state->color_plane[1].y << 16) |
 		      plane_state->color_plane[1].x);
 
-	/* program plane scaler */
 	if (plane_state->scaler_id >= 0) {
-		skl_program_scaler(dev_priv, plane, crtc_state, plane_state);
+		skl_program_scaler(plane, crtc_state, plane_state);
 
 		I915_WRITE_FW(PLANE_POS(pipe, plane_id), 0);
 	} else {
-- 
2.18.1

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