Merge tag 'drm-intel-fixes-2021-02-11' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.11 final:
- Ensure Type-C FIA is powered when initializing
- Fix overlay frontbuffer tracking

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87r1lnc78t.fsf@intel.com

2 files changed, 45 insertions, 39 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
index 0095c8cac9b4..b73d51e766ce 100644
--- a/drivers/gpu/drm/i915/display/intel_overlay.c
+++ b/drivers/gpu/drm/i915/display/intel_overlay.c
@@ -182,6 +182,7 @@ struct intel_overlay {
 	struct intel_crtc *crtc;
 	struct i915_vma *vma;
 	struct i915_vma *old_vma;
+	struct intel_frontbuffer *frontbuffer;
 	bool active;
 	bool pfit_active;
 	u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
@@ -282,21 +283,19 @@ static void intel_overlay_flip_prepare(struct intel_overlay *overlay,
 				       struct i915_vma *vma)
 {
 	enum pipe pipe = overlay->crtc->pipe;
-	struct intel_frontbuffer *from = NULL, *to = NULL;
+	struct intel_frontbuffer *frontbuffer = NULL;
 
 	drm_WARN_ON(&overlay->i915->drm, overlay->old_vma);
 
-	if (overlay->vma)
-		from = intel_frontbuffer_get(overlay->vma->obj);
 	if (vma)
-		to = intel_frontbuffer_get(vma->obj);
+		frontbuffer = intel_frontbuffer_get(vma->obj);
 
-	intel_frontbuffer_track(from, to, INTEL_FRONTBUFFER_OVERLAY(pipe));
+	intel_frontbuffer_track(overlay->frontbuffer, frontbuffer,
+				INTEL_FRONTBUFFER_OVERLAY(pipe));
 
-	if (to)
-		intel_frontbuffer_put(to);
-	if (from)
-		intel_frontbuffer_put(from);
+	if (overlay->frontbuffer)
+		intel_frontbuffer_put(overlay->frontbuffer);
+	overlay->frontbuffer = frontbuffer;
 
 	intel_frontbuffer_flip_prepare(overlay->i915,
 				       INTEL_FRONTBUFFER_OVERLAY(pipe));
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c
index 4346bc1a747a..8b6f16f9d0d1 100644
--- a/drivers/gpu/drm/i915/display/intel_tc.c
+++ b/drivers/gpu/drm/i915/display/intel_tc.c
@@ -23,36 +23,6 @@ static const char *tc_port_mode_name(enum tc_port_mode mode)
 	return names[mode];
 }
 
-static void
-tc_port_load_fia_params(struct drm_i915_private *i915,
-			struct intel_digital_port *dig_port)
-{
-	enum port port = dig_port->base.port;
-	enum tc_port tc_port = intel_port_to_tc(i915, port);
-	u32 modular_fia;
-
-	if (INTEL_INFO(i915)->display.has_modular_fia) {
-		modular_fia = intel_uncore_read(&i915->uncore,
-						PORT_TX_DFLEXDPSP(FIA1));
-		drm_WARN_ON(&i915->drm, modular_fia == 0xffffffff);
-		modular_fia &= MODULAR_FIA_MASK;
-	} else {
-		modular_fia = 0;
-	}
-
-	/*
-	 * Each Modular FIA instance houses 2 TC ports. In SOC that has more
-	 * than two TC ports, there are multiple instances of Modular FIA.
-	 */
-	if (modular_fia) {
-		dig_port->tc_phy_fia = tc_port / 2;
-		dig_port->tc_phy_fia_idx = tc_port % 2;
-	} else {
-		dig_port->tc_phy_fia = FIA1;
-		dig_port->tc_phy_fia_idx = tc_port;
-	}
-}
-
 static enum intel_display_power_domain
 tc_cold_get_power_domain(struct intel_digital_port *dig_port)
 {
@@ -646,6 +616,43 @@ void intel_tc_port_put_link(struct intel_digital_port *dig_port)
 	mutex_unlock(&dig_port->tc_lock);
 }
 
+static bool
+tc_has_modular_fia(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
+{
+	intel_wakeref_t wakeref;
+	u32 val;
+
+	if (!INTEL_INFO(i915)->display.has_modular_fia)
+		return false;
+
+	wakeref = tc_cold_block(dig_port);
+	val = intel_uncore_read(&i915->uncore, PORT_TX_DFLEXDPSP(FIA1));
+	tc_cold_unblock(dig_port, wakeref);
+
+	drm_WARN_ON(&i915->drm, val == 0xffffffff);
+
+	return val & MODULAR_FIA_MASK;
+}
+
+static void
+tc_port_load_fia_params(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
+{
+	enum port port = dig_port->base.port;
+	enum tc_port tc_port = intel_port_to_tc(i915, port);
+
+	/*
+	 * Each Modular FIA instance houses 2 TC ports. In SOC that has more
+	 * than two TC ports, there are multiple instances of Modular FIA.
+	 */
+	if (tc_has_modular_fia(i915, dig_port)) {
+		dig_port->tc_phy_fia = tc_port / 2;
+		dig_port->tc_phy_fia_idx = tc_port % 2;
+	} else {
+		dig_port->tc_phy_fia = FIA1;
+		dig_port->tc_phy_fia_idx = tc_port;
+	}
+}
+
 void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy)
 {
 	struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);