drm/i915: Add separate define for SEL_FETCH_CUR_CTL()

Split the cursor stuff from the rest of the selective fetch
plane registers so that we can collect all cursor registers
in intel_cursor_regs.h. Also take the opportunity to rename
the registers to match the spec.

v2: Pass the correct register offset fpr pipe B (Jani)
    s/mtl+/tgl+/ as that's where this was introduced
    Drop the bogus SEL_FETCH_CUR_CTL_ENABLE bit, the contents
    actually match the normal CUR_CTL register
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/20240520171459.9661-1-ville.syrjala@linux.intel.com

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

@@ -508,7 +508,7 @@ static void i9xx_cursor_disable_sel_fetch_arm(struct intel_plane *plane,
 	if (!crtc_state->enable_psr2_sel_fetch)
 		return;
 
-	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id), 0);
+	intel_de_write_fw(dev_priv, SEL_FETCH_CUR_CTL(pipe), 0);
 }
 
 static void wa_16021440873(struct intel_plane *plane,
@@ -523,7 +523,7 @@ static void wa_16021440873(struct intel_plane *plane,
 	ctl &= ~MCURSOR_MODE_MASK;
 	ctl |= MCURSOR_MODE_64_2B;
 
-	intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id), ctl);
+	intel_de_write_fw(dev_priv, SEL_FETCH_CUR_CTL(pipe), ctl);
 
 	intel_de_write(dev_priv, PIPE_SRCSZ_ERLY_TPT(dev_priv, pipe),
 		       PIPESRC_HEIGHT(et_y_position));
@@ -548,7 +548,7 @@ static void i9xx_cursor_update_sel_fetch_arm(struct intel_plane *plane,
 					  val);
 		}
 
-		intel_de_write_fw(dev_priv, PLANE_SEL_FETCH_CTL(pipe, plane->id),
+		intel_de_write_fw(dev_priv, SEL_FETCH_CUR_CTL(pipe),
 				  plane_state->ctl);
 	} else {
 		/* Wa_16021440873 */

drivers/gpu/drm/i915/display/intel_cursor_regs.h

@@ -95,4 +95,9 @@
 #define _CUR_BUF_CFG_B		0x7117c
 #define CUR_BUF_CFG(pipe)	_MMIO_PIPE((pipe), _CUR_BUF_CFG_A, _CUR_BUF_CFG_B)
 
+/* tgl+ */
+#define _SEL_FETCH_CUR_CTL_A	0x70880
+#define _SEL_FETCH_CUR_CTL_B	0x71880
+#define SEL_FETCH_CUR_CTL(pipe)	_MMIO_PIPE((pipe), _SEL_FETCH_CUR_CTL_A, _SEL_FETCH_CUR_CTL_B)
+
 #endif /* __INTEL_CURSOR_REGS_H__ */