drm/i915/mpllb: move mpllb state check to intel_snps_phy.c

Keep the mpllb implementation details together in intel_snps_phy.c. Also
declutter intel_display.c.

v2: intel_mpllb_verify_state -> void intel_mpllb_state_verify (Ville)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e7340bb0e399aeb2676c4820461187eeb1d4db15.1655372759.git.jani.nikula@intel.com

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

@@ -6582,50 +6582,6 @@ intel_verify_planes(struct intel_atomic_state *state)
 			     plane_state->uapi.visible);
 }
 
-static void
-verify_mpllb_state(struct intel_atomic_state *state,
-		   struct intel_crtc_state *new_crtc_state)
-{
-	struct drm_i915_private *i915 = to_i915(state->base.dev);
-	struct intel_mpllb_state mpllb_hw_state = { 0 };
-	struct intel_mpllb_state *mpllb_sw_state = &new_crtc_state->mpllb_state;
-	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
-	struct intel_encoder *encoder;
-
-	if (!IS_DG2(i915))
-		return;
-
-	if (!new_crtc_state->hw.active)
-		return;
-
-	encoder = intel_get_crtc_new_encoder(state, new_crtc_state);
-	intel_mpllb_readout_hw_state(encoder, &mpllb_hw_state);
-
-#define MPLLB_CHECK(__name)						\
-	I915_STATE_WARN(mpllb_sw_state->__name != mpllb_hw_state.__name,	\
-			"[CRTC:%d:%s] mismatch in MPLLB: %s (expected 0x%08x, found 0x%08x)", \
-			crtc->base.base.id, crtc->base.name,		\
-			__stringify(__name),				\
-			mpllb_sw_state->__name, mpllb_hw_state.__name)
-
-	MPLLB_CHECK(mpllb_cp);
-	MPLLB_CHECK(mpllb_div);
-	MPLLB_CHECK(mpllb_div2);
-	MPLLB_CHECK(mpllb_fracn1);
-	MPLLB_CHECK(mpllb_fracn2);
-	MPLLB_CHECK(mpllb_sscen);
-	MPLLB_CHECK(mpllb_sscstep);
-
-	/*
-	 * ref_control is handled by the hardware/firemware and never
-	 * programmed by the software, but the proper values are supplied
-	 * in the bspec for verification purposes.
-	 */
-	MPLLB_CHECK(ref_control);
-
-#undef MPLLB_CHECK
-}
-
 static void
 intel_modeset_verify_crtc(struct intel_crtc *crtc,
 			  struct intel_atomic_state *state,
@@ -6639,7 +6595,7 @@ intel_modeset_verify_crtc(struct intel_crtc *crtc,
 	verify_connector_state(state, crtc);
 	verify_crtc_state(crtc, old_crtc_state, new_crtc_state);
 	intel_shared_dpll_state_verify(crtc, old_crtc_state, new_crtc_state);
-	verify_mpllb_state(state, new_crtc_state);
+	intel_mpllb_state_verify(state, new_crtc_state);
 }
 
 static void

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

@@ -813,3 +813,46 @@ int intel_snps_phy_check_hdmi_link_rate(int clock)
 
 	return MODE_CLOCK_RANGE;
 }
+
+void intel_mpllb_state_verify(struct intel_atomic_state *state,
+			      struct intel_crtc_state *new_crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_mpllb_state mpllb_hw_state = { 0 };
+	struct intel_mpllb_state *mpllb_sw_state = &new_crtc_state->mpllb_state;
+	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
+	struct intel_encoder *encoder;
+
+	if (!IS_DG2(i915))
+		return;
+
+	if (!new_crtc_state->hw.active)
+		return;
+
+	encoder = intel_get_crtc_new_encoder(state, new_crtc_state);
+	intel_mpllb_readout_hw_state(encoder, &mpllb_hw_state);
+
+#define MPLLB_CHECK(__name)						\
+	I915_STATE_WARN(mpllb_sw_state->__name != mpllb_hw_state.__name,	\
+			"[CRTC:%d:%s] mismatch in MPLLB: %s (expected 0x%08x, found 0x%08x)", \
+			crtc->base.base.id, crtc->base.name,		\
+			__stringify(__name),				\
+			mpllb_sw_state->__name, mpllb_hw_state.__name)
+
+	MPLLB_CHECK(mpllb_cp);
+	MPLLB_CHECK(mpllb_div);
+	MPLLB_CHECK(mpllb_div2);
+	MPLLB_CHECK(mpllb_fracn1);
+	MPLLB_CHECK(mpllb_fracn2);
+	MPLLB_CHECK(mpllb_sscen);
+	MPLLB_CHECK(mpllb_sscstep);
+
+	/*
+	 * ref_control is handled by the hardware/firemware and never
+	 * programmed by the software, but the proper values are supplied
+	 * in the bspec for verification purposes.
+	 */
+	MPLLB_CHECK(ref_control);
+
+#undef MPLLB_CHECK
+}

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

@@ -9,8 +9,9 @@
 #include <linux/types.h>
 
 struct drm_i915_private;
-struct intel_encoder;
+struct intel_atomic_state;
 struct intel_crtc_state;
+struct intel_encoder;
 struct intel_mpllb_state;
 enum phy;
 
@@ -31,5 +32,7 @@ int intel_mpllb_calc_port_clock(struct intel_encoder *encoder,
 int intel_snps_phy_check_hdmi_link_rate(int clock);
 void intel_snps_phy_set_signal_levels(struct intel_encoder *encoder,
 				      const struct intel_crtc_state *crtc_state);
+void intel_mpllb_state_verify(struct intel_atomic_state *state,
+			      struct intel_crtc_state *new_crtc_state);
 
 #endif /* __INTEL_SNPS_PHY_H__ */