drm/i915: Rename skl+ scaler binding bits

Rename the scaler binding bits to match the spec more closely.
Also call the parameters 'plane_id' to make it a bit more clear
what to pass in.

v2: Don't break gvt
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230426135019.7603-4-ville.syrjala@linux.intel.com

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

@@ -396,7 +396,7 @@ static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_stat
 			mode = PS_SCALER_MODE_PLANAR;
 
 			if (linked)
-				mode |= PS_PLANE_Y_SEL(linked->id);
+				mode |= PS_BINDING_Y_PLANE(linked->id);
 		}
 	} else if (DISPLAY_VER(dev_priv) >= 10) {
 		mode = PS_SCALER_MODE_NORMAL;
@@ -741,8 +741,8 @@ void skl_pfit_enable(const struct intel_crtc_state *crtc_state)
 
 	id = scaler_state->scaler_id;
 
-	ps_ctrl = skl_scaler_get_filter_select(crtc_state->hw.scaling_filter, 0);
-	ps_ctrl |=  PS_SCALER_EN | scaler_state->scalers[id].mode;
+	ps_ctrl = PS_SCALER_EN | PS_BINDING_PIPE | scaler_state->scalers[id].mode |
+		skl_scaler_get_filter_select(crtc_state->hw.scaling_filter, 0);
 
 	skl_scaler_setup_filter(dev_priv, pipe, id, 0,
 				crtc_state->hw.scaling_filter);
@@ -804,8 +804,8 @@ skl_program_plane_scaler(struct intel_plane *plane,
 		uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
 	}
 
-	ps_ctrl = skl_scaler_get_filter_select(plane_state->hw.scaling_filter, 0);
-	ps_ctrl |= PS_SCALER_EN | PS_PLANE_SEL(plane->id) | scaler->mode;
+	ps_ctrl = PS_SCALER_EN | PS_BINDING_PLANE(plane->id) | scaler->mode |
+		skl_scaler_get_filter_select(plane_state->hw.scaling_filter, 0);
 
 	skl_scaler_setup_filter(dev_priv, pipe, scaler_id, 0,
 				plane_state->hw.scaling_filter);
@@ -870,7 +870,7 @@ void skl_scaler_get_config(struct intel_crtc_state *crtc_state)
 		u32 ctl, pos, size;
 
 		ctl = intel_de_read(dev_priv, SKL_PS_CTRL(crtc->pipe, i));
-		if ((ctl & (PS_SCALER_EN | PS_PLANE_SEL_MASK)) != PS_SCALER_EN)
+		if ((ctl & (PS_SCALER_EN | PS_BINDING_MASK)) != (PS_SCALER_EN | PS_BINDING_PIPE))
 			continue;
 
 		id = i;

drivers/gpu/drm/i915/gvt/handlers.c

@@ -1562,7 +1562,7 @@ static int pf_write(struct intel_vgpu *vgpu,
 
 	if ((offset == _PS_1A_CTRL || offset == _PS_2A_CTRL ||
 	   offset == _PS_1B_CTRL || offset == _PS_2B_CTRL ||
-	   offset == _PS_1C_CTRL) && (val & PS_PLANE_SEL_MASK) != 0) {
+	   offset == _PS_1C_CTRL) && (val & PS_BINDING_MASK) != PS_BINDING_PIPE) {
 		drm_WARN_ONCE(&i915->drm, true,
 			      "VM(%d): guest is trying to scaling a plane\n",
 			      vgpu->id);

drivers/gpu/drm/i915/i915_reg.h

@@ -4051,8 +4051,9 @@
 #define SKL_PS_SCALER_MODE_NV12 (2 << 28)
 #define PS_SCALER_MODE_PLANAR (1 << 29)
 #define PS_SCALER_MODE_NORMAL (0 << 29)
-#define PS_PLANE_SEL_MASK  (7 << 25)
-#define PS_PLANE_SEL(plane) (((plane) + 1) << 25)
+#define PS_BINDING_MASK (7 << 25)
+#define PS_BINDING_PIPE (0 << 25)
+#define PS_BINDING_PLANE(plane_id) (((plane_id) + 1) << 25)
 #define PS_FILTER_MASK         (3 << 23)
 #define PS_FILTER_MEDIUM       (0 << 23)
 #define PS_FILTER_PROGRAMMED   (1 << 23)
@@ -4068,8 +4069,8 @@
 #define PS_VADAPT_MODE_LEAST_ADAPT (0 << 5)
 #define PS_VADAPT_MODE_MOD_ADAPT   (1 << 5)
 #define PS_VADAPT_MODE_MOST_ADAPT  (3 << 5)
-#define PS_PLANE_Y_SEL_MASK  (7 << 5)
-#define PS_PLANE_Y_SEL(plane) (((plane) + 1) << 5)
+#define PS_BINDING_Y_MASK  (7 << 5)
+#define PS_BINDING_Y_PLANE(plane_id) (((plane_id) + 1) << 5)
 #define PS_Y_VERT_FILTER_SELECT(set)   ((set) << 4)
 #define PS_Y_HORZ_FILTER_SELECT(set)   ((set) << 3)
 #define PS_UV_VERT_FILTER_SELECT(set)  ((set) << 2)