Merging upstream version 6.7.12.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 193 insertions, 104 deletions

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index bf0dbd7d06..67143a0f51 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1155,7 +1155,6 @@ static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
 	}
 
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
-	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
 
 	/* ensure all panel commands dispatched before enabling transcoder */
 	wait_for_cmds_dispatched_to_panel(encoder);
@@ -1256,6 +1255,8 @@ static void gen11_dsi_enable(struct intel_atomic_state *state,
 	/* step6d: enable dsi transcoder */
 	gen11_dsi_enable_transcoder(encoder);
 
+	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
+
 	/* step7: enable backlight */
 	intel_backlight_enable(crtc_state, conn_state);
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 4e8f1e91bb..e7ea287845 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1952,16 +1952,12 @@ static int get_init_otp_deassert_fragment_len(struct drm_i915_private *i915,
  * these devices we split the init OTP sequence into a deassert sequence and
  * the actual init OTP part.
  */
-static void fixup_mipi_sequences(struct drm_i915_private *i915,
-				 struct intel_panel *panel)
+static void vlv_fixup_mipi_sequences(struct drm_i915_private *i915,
+				     struct intel_panel *panel)
 {
 	u8 *init_otp;
 	int len;
 
-	/* Limit this to VLV for now. */
-	if (!IS_VALLEYVIEW(i915))
-		return;
-
 	/* Limit this to v1 vid-mode sequences */
 	if (panel->vbt.dsi.config->is_cmd_mode ||
 	    panel->vbt.dsi.seq_version != 1)
@@ -1997,6 +1993,41 @@ static void fixup_mipi_sequences(struct drm_i915_private *i915,
 	panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] = init_otp + len - 1;
 }
 
+/*
+ * Some machines (eg. Lenovo 82TQ) appear to have broken
+ * VBT sequences:
+ * - INIT_OTP is not present at all
+ * - what should be in INIT_OTP is in DISPLAY_ON
+ * - what should be in DISPLAY_ON is in BACKLIGHT_ON
+ *   (along with the actual backlight stuff)
+ *
+ * To make those work we simply swap DISPLAY_ON and INIT_OTP.
+ *
+ * TODO: Do we need to limit this to specific machines,
+ *       or examine the contents of the sequences to
+ *       avoid false positives?
+ */
+static void icl_fixup_mipi_sequences(struct drm_i915_private *i915,
+				     struct intel_panel *panel)
+{
+	if (!panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] &&
+	    panel->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_ON]) {
+		drm_dbg_kms(&i915->drm, "Broken VBT: Swapping INIT_OTP and DISPLAY_ON sequences\n");
+
+		swap(panel->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP],
+		     panel->vbt.dsi.sequence[MIPI_SEQ_DISPLAY_ON]);
+	}
+}
+
+static void fixup_mipi_sequences(struct drm_i915_private *i915,
+				 struct intel_panel *panel)
+{
+	if (DISPLAY_VER(i915) >= 11)
+		icl_fixup_mipi_sequences(i915, panel);
+	else if (IS_VALLEYVIEW(i915))
+		vlv_fixup_mipi_sequences(i915, panel);
+}
+
 static void
 parse_mipi_sequence(struct drm_i915_private *i915,
 		    struct intel_panel *panel)
@@ -3321,6 +3352,9 @@ bool intel_bios_encoder_supports_dp_dual_mode(const struct intel_bios_encoder_da
 {
 	const struct child_device_config *child = &devdata->child;
 
+	if (!devdata)
+		return false;
+
 	if (!intel_bios_encoder_supports_dp(devdata) ||
 	    !intel_bios_encoder_supports_hdmi(devdata))
 		return false;
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_well.c b/drivers/gpu/drm/i915/display/intel_display_power_well.c
index 07d6500500..82dd5be72e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power_well.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power_well.c
@@ -246,7 +246,14 @@ static enum phy icl_aux_pw_to_phy(struct drm_i915_private *i915,
 	enum aux_ch aux_ch = icl_aux_pw_to_ch(power_well);
 	struct intel_digital_port *dig_port = aux_ch_to_digital_port(i915, aux_ch);
 
-	return intel_port_to_phy(i915, dig_port->base.port);
+	/*
+	 * FIXME should we care about the (VBT defined) dig_port->aux_ch
+	 * relationship or should this be purely defined by the hardware layout?
+	 * Currently if the port doesn't appear in the VBT, or if it's declared
+	 * as HDMI-only and routed to a combo PHY, the encoder either won't be
+	 * present at all or it will not have an aux_ch assigned.
+	 */
+	return dig_port ? intel_port_to_phy(i915, dig_port->base.port) : PHY_NONE;
 }
 
 static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
@@ -414,7 +421,8 @@ icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
 
 	intel_de_rmw(dev_priv, regs->driver, 0, HSW_PWR_WELL_CTL_REQ(pw_idx));
 
-	if (DISPLAY_VER(dev_priv) < 12)
+	/* FIXME this is a mess */
+	if (phy != PHY_NONE)
 		intel_de_rmw(dev_priv, ICL_PORT_CL_DW12(phy),
 			     0, ICL_LANE_ENABLE_AUX);
 
@@ -437,7 +445,10 @@ icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
 
 	drm_WARN_ON(&dev_priv->drm, !IS_ICELAKE(dev_priv));
 
-	intel_de_rmw(dev_priv, ICL_PORT_CL_DW12(phy), ICL_LANE_ENABLE_AUX, 0);
+	/* FIXME this is a mess */
+	if (phy != PHY_NONE)
+		intel_de_rmw(dev_priv, ICL_PORT_CL_DW12(phy),
+			     ICL_LANE_ENABLE_AUX, 0);
 
 	intel_de_rmw(dev_priv, regs->driver, HSW_PWR_WELL_CTL_REQ(pw_idx), 0);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_trace.h b/drivers/gpu/drm/i915/display/intel_display_trace.h
index 99bdb83359..7862e7cefe 100644
--- a/drivers/gpu/drm/i915/display/intel_display_trace.h
+++ b/drivers/gpu/drm/i915/display/intel_display_trace.h
@@ -411,7 +411,7 @@ TRACE_EVENT(intel_fbc_activate,
 			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
 									 plane->pipe);
 			   __assign_str(dev, __dev_name_kms(plane));
-			   __assign_str(name, plane->base.name)
+			   __assign_str(name, plane->base.name);
 			   __entry->pipe = crtc->pipe;
 			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
 			   __entry->scanline = intel_get_crtc_scanline(crtc);
@@ -438,7 +438,7 @@ TRACE_EVENT(intel_fbc_deactivate,
 			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
 									 plane->pipe);
 			   __assign_str(dev, __dev_name_kms(plane));
-			   __assign_str(name, plane->base.name)
+			   __assign_str(name, plane->base.name);
 			   __entry->pipe = crtc->pipe;
 			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
 			   __entry->scanline = intel_get_crtc_scanline(crtc);
@@ -465,7 +465,7 @@ TRACE_EVENT(intel_fbc_nuke,
 			   struct intel_crtc *crtc = intel_crtc_for_pipe(to_i915(plane->base.dev),
 									 plane->pipe);
 			   __assign_str(dev, __dev_name_kms(plane));
-			   __assign_str(name, plane->base.name)
+			   __assign_str(name, plane->base.name);
 			   __entry->pipe = crtc->pipe;
 			   __entry->frame = intel_crtc_get_vblank_counter(crtc);
 			   __entry->scanline = intel_get_crtc_scanline(crtc);
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 399653a20f..fb694ff9dc 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -631,9 +631,9 @@ static const struct intel_shared_dpll_funcs ibx_pch_dpll_funcs = {
 };
 
 static const struct dpll_info pch_plls[] = {
-	{ "PCH DPLL A", &ibx_pch_dpll_funcs, DPLL_ID_PCH_PLL_A, 0 },
-	{ "PCH DPLL B", &ibx_pch_dpll_funcs, DPLL_ID_PCH_PLL_B, 0 },
-	{ },
+	{ .name = "PCH DPLL A", .funcs = &ibx_pch_dpll_funcs, .id = DPLL_ID_PCH_PLL_A, },
+	{ .name = "PCH DPLL B", .funcs = &ibx_pch_dpll_funcs, .id = DPLL_ID_PCH_PLL_B, },
+	{}
 };
 
 static const struct intel_dpll_mgr pch_pll_mgr = {
@@ -1239,13 +1239,16 @@ static const struct intel_shared_dpll_funcs hsw_ddi_lcpll_funcs = {
 };
 
 static const struct dpll_info hsw_plls[] = {
-	{ "WRPLL 1",    &hsw_ddi_wrpll_funcs, DPLL_ID_WRPLL1,     0 },
-	{ "WRPLL 2",    &hsw_ddi_wrpll_funcs, DPLL_ID_WRPLL2,     0 },
-	{ "SPLL",       &hsw_ddi_spll_funcs,  DPLL_ID_SPLL,       0 },
-	{ "LCPLL 810",  &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_810,  INTEL_DPLL_ALWAYS_ON },
-	{ "LCPLL 1350", &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_1350, INTEL_DPLL_ALWAYS_ON },
-	{ "LCPLL 2700", &hsw_ddi_lcpll_funcs, DPLL_ID_LCPLL_2700, INTEL_DPLL_ALWAYS_ON },
-	{ },
+	{ .name = "WRPLL 1", .funcs = &hsw_ddi_wrpll_funcs, .id = DPLL_ID_WRPLL1, },
+	{ .name = "WRPLL 2", .funcs = &hsw_ddi_wrpll_funcs, .id = DPLL_ID_WRPLL2, },
+	{ .name = "SPLL", .funcs = &hsw_ddi_spll_funcs, .id = DPLL_ID_SPLL, },
+	{ .name = "LCPLL 810", .funcs = &hsw_ddi_lcpll_funcs, .id = DPLL_ID_LCPLL_810,
+	  .flags = INTEL_DPLL_ALWAYS_ON, },
+	{ .name = "LCPLL 1350", .funcs = &hsw_ddi_lcpll_funcs, .id = DPLL_ID_LCPLL_1350,
+	  .flags = INTEL_DPLL_ALWAYS_ON, },
+	{ .name = "LCPLL 2700", .funcs = &hsw_ddi_lcpll_funcs, .id = DPLL_ID_LCPLL_2700,
+	  .flags = INTEL_DPLL_ALWAYS_ON, },
+	{}
 };
 
 static const struct intel_dpll_mgr hsw_pll_mgr = {
@@ -1921,11 +1924,12 @@ static const struct intel_shared_dpll_funcs skl_ddi_dpll0_funcs = {
 };
 
 static const struct dpll_info skl_plls[] = {
-	{ "DPLL 0", &skl_ddi_dpll0_funcs, DPLL_ID_SKL_DPLL0, INTEL_DPLL_ALWAYS_ON },
-	{ "DPLL 1", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL1, 0 },
-	{ "DPLL 2", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL2, 0 },
-	{ "DPLL 3", &skl_ddi_pll_funcs,   DPLL_ID_SKL_DPLL3, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &skl_ddi_dpll0_funcs, .id = DPLL_ID_SKL_DPLL0,
+	  .flags = INTEL_DPLL_ALWAYS_ON, },
+	{ .name = "DPLL 1", .funcs = &skl_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL1, },
+	{ .name = "DPLL 2", .funcs = &skl_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL2, },
+	{ .name = "DPLL 3", .funcs = &skl_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL3, },
+	{}
 };
 
 static const struct intel_dpll_mgr skl_pll_mgr = {
@@ -2376,10 +2380,10 @@ static const struct intel_shared_dpll_funcs bxt_ddi_pll_funcs = {
 };
 
 static const struct dpll_info bxt_plls[] = {
-	{ "PORT PLL A", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL0, 0 },
-	{ "PORT PLL B", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL1, 0 },
-	{ "PORT PLL C", &bxt_ddi_pll_funcs, DPLL_ID_SKL_DPLL2, 0 },
-	{ },
+	{ .name = "PORT PLL A", .funcs = &bxt_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL0, },
+	{ .name = "PORT PLL B", .funcs = &bxt_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL1, },
+	{ .name = "PORT PLL C", .funcs = &bxt_ddi_pll_funcs, .id = DPLL_ID_SKL_DPLL2, },
+	{}
 };
 
 static const struct intel_dpll_mgr bxt_pll_mgr = {
@@ -2485,7 +2489,7 @@ static void icl_wrpll_params_populate(struct skl_wrpll_params *params,
 static bool
 ehl_combo_pll_div_frac_wa_needed(struct drm_i915_private *i915)
 {
-	return (((IS_ELKHARTLAKE(i915) || IS_JASPERLAKE(i915)) &&
+	return ((IS_ELKHARTLAKE(i915) &&
 		 IS_DISPLAY_STEP(i915, STEP_B0, STEP_FOREVER)) ||
 		 IS_TIGERLAKE(i915) || IS_ALDERLAKE_S(i915) || IS_ALDERLAKE_P(i915)) &&
 		 i915->display.dpll.ref_clks.nssc == 38400;
@@ -3284,6 +3288,8 @@ static int icl_compute_tc_phy_dplls(struct intel_atomic_state *state,
 	struct drm_i915_private *i915 = to_i915(state->base.dev);
 	struct intel_crtc_state *crtc_state =
 		intel_atomic_get_new_crtc_state(state, crtc);
+	const struct intel_crtc_state *old_crtc_state =
+		intel_atomic_get_old_crtc_state(state, crtc);
 	struct icl_port_dpll *port_dpll =
 		&crtc_state->icl_port_dplls[ICL_PORT_DPLL_DEFAULT];
 	struct skl_wrpll_params pll_params = {};
@@ -3302,7 +3308,11 @@ static int icl_compute_tc_phy_dplls(struct intel_atomic_state *state,
 		return ret;
 
 	/* this is mainly for the fastset check */
-	icl_set_active_port_dpll(crtc_state, ICL_PORT_DPLL_MG_PHY);
+	if (old_crtc_state->shared_dpll &&
+	    old_crtc_state->shared_dpll->info->id == DPLL_ID_ICL_TBTPLL)
+		icl_set_active_port_dpll(crtc_state, ICL_PORT_DPLL_DEFAULT);
+	else
+		icl_set_active_port_dpll(crtc_state, ICL_PORT_DPLL_MG_PHY);
 
 	crtc_state->port_clock = icl_ddi_mg_pll_get_freq(i915, NULL,
 							 &port_dpll->hw_state);
@@ -4014,14 +4024,15 @@ static const struct intel_shared_dpll_funcs mg_pll_funcs = {
 };
 
 static const struct dpll_info icl_plls[] = {
-	{ "DPLL 0",   &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
-	{ "DPLL 1",   &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
-	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
-	{ "MG PLL 1", &mg_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
-	{ "MG PLL 2", &mg_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
-	{ "MG PLL 3", &mg_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
-	{ "MG PLL 4", &mg_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "TBT PLL", .funcs = &tbt_pll_funcs, .id = DPLL_ID_ICL_TBTPLL,
+	  .flags = INTEL_DPLL_IS_ALT_PORT_DPLL, },
+	{ .name = "MG PLL 1", .funcs = &mg_pll_funcs, .id = DPLL_ID_ICL_MGPLL1, },
+	{ .name = "MG PLL 2", .funcs = &mg_pll_funcs, .id = DPLL_ID_ICL_MGPLL2, },
+	{ .name = "MG PLL 3", .funcs = &mg_pll_funcs, .id = DPLL_ID_ICL_MGPLL3, },
+	{ .name = "MG PLL 4", .funcs = &mg_pll_funcs, .id = DPLL_ID_ICL_MGPLL4, },
+	{}
 };
 
 static const struct intel_dpll_mgr icl_pll_mgr = {
@@ -4035,10 +4046,10 @@ static const struct intel_dpll_mgr icl_pll_mgr = {
 };
 
 static const struct dpll_info ehl_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
-	{ "DPLL 4", &combo_pll_funcs, DPLL_ID_EHL_DPLL4, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "DPLL 4", .funcs = &combo_pll_funcs, .id = DPLL_ID_EHL_DPLL4, },
+	{}
 };
 
 static const struct intel_dpll_mgr ehl_pll_mgr = {
@@ -4058,16 +4069,17 @@ static const struct intel_shared_dpll_funcs dkl_pll_funcs = {
 };
 
 static const struct dpll_info tgl_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
-	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
-	{ "TC PLL 1", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
-	{ "TC PLL 2", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
-	{ "TC PLL 3", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
-	{ "TC PLL 4", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
-	{ "TC PLL 5", &dkl_pll_funcs, DPLL_ID_TGL_MGPLL5, 0 },
-	{ "TC PLL 6", &dkl_pll_funcs, DPLL_ID_TGL_MGPLL6, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "TBT PLL", .funcs = &tbt_pll_funcs, .id = DPLL_ID_ICL_TBTPLL,
+	  .flags = INTEL_DPLL_IS_ALT_PORT_DPLL, },
+	{ .name = "TC PLL 1", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL1, },
+	{ .name = "TC PLL 2", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL2, },
+	{ .name = "TC PLL 3", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL3, },
+	{ .name = "TC PLL 4", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL4, },
+	{ .name = "TC PLL 5", .funcs = &dkl_pll_funcs, .id = DPLL_ID_TGL_MGPLL5, },
+	{ .name = "TC PLL 6", .funcs = &dkl_pll_funcs, .id = DPLL_ID_TGL_MGPLL6, },
+	{}
 };
 
 static const struct intel_dpll_mgr tgl_pll_mgr = {
@@ -4081,10 +4093,10 @@ static const struct intel_dpll_mgr tgl_pll_mgr = {
 };
 
 static const struct dpll_info rkl_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
-	{ "DPLL 4", &combo_pll_funcs, DPLL_ID_EHL_DPLL4, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "DPLL 4", .funcs = &combo_pll_funcs, .id = DPLL_ID_EHL_DPLL4, },
+	{}
 };
 
 static const struct intel_dpll_mgr rkl_pll_mgr = {
@@ -4097,11 +4109,11 @@ static const struct intel_dpll_mgr rkl_pll_mgr = {
 };
 
 static const struct dpll_info dg1_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_DG1_DPLL0, 0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_DG1_DPLL1, 0 },
-	{ "DPLL 2", &combo_pll_funcs, DPLL_ID_DG1_DPLL2, 0 },
-	{ "DPLL 3", &combo_pll_funcs, DPLL_ID_DG1_DPLL3, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL1, },
+	{ .name = "DPLL 2", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL2, },
+	{ .name = "DPLL 3", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL3, },
+	{}
 };
 
 static const struct intel_dpll_mgr dg1_pll_mgr = {
@@ -4114,11 +4126,11 @@ static const struct intel_dpll_mgr dg1_pll_mgr = {
 };
 
 static const struct dpll_info adls_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0, 0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1, 0 },
-	{ "DPLL 2", &combo_pll_funcs, DPLL_ID_DG1_DPLL2, 0 },
-	{ "DPLL 3", &combo_pll_funcs, DPLL_ID_DG1_DPLL3, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "DPLL 2", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL2, },
+	{ .name = "DPLL 3", .funcs = &combo_pll_funcs, .id = DPLL_ID_DG1_DPLL3, },
+	{}
 };
 
 static const struct intel_dpll_mgr adls_pll_mgr = {
@@ -4131,14 +4143,15 @@ static const struct intel_dpll_mgr adls_pll_mgr = {
 };
 
 static const struct dpll_info adlp_plls[] = {
-	{ "DPLL 0", &combo_pll_funcs, DPLL_ID_ICL_DPLL0,  0 },
-	{ "DPLL 1", &combo_pll_funcs, DPLL_ID_ICL_DPLL1,  0 },
-	{ "TBT PLL",  &tbt_pll_funcs, DPLL_ID_ICL_TBTPLL, 0 },
-	{ "TC PLL 1", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL1, 0 },
-	{ "TC PLL 2", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL2, 0 },
-	{ "TC PLL 3", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL3, 0 },
-	{ "TC PLL 4", &dkl_pll_funcs, DPLL_ID_ICL_MGPLL4, 0 },
-	{ },
+	{ .name = "DPLL 0", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL0, },
+	{ .name = "DPLL 1", .funcs = &combo_pll_funcs, .id = DPLL_ID_ICL_DPLL1, },
+	{ .name = "TBT PLL", .funcs = &tbt_pll_funcs, .id = DPLL_ID_ICL_TBTPLL,
+	  .flags = INTEL_DPLL_IS_ALT_PORT_DPLL, },
+	{ .name = "TC PLL 1", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL1, },
+	{ .name = "TC PLL 2", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL2, },
+	{ .name = "TC PLL 3", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL3, },
+	{ .name = "TC PLL 4", .funcs = &dkl_pll_funcs, .id = DPLL_ID_ICL_MGPLL4, },
+	{}
 };
 
 static const struct intel_dpll_mgr adlp_pll_mgr = {
@@ -4462,31 +4475,29 @@ verify_single_dpll_state(struct drm_i915_private *i915,
 			 struct intel_crtc *crtc,
 			 const struct intel_crtc_state *new_crtc_state)
 {
-	struct intel_dpll_hw_state dpll_hw_state;
+	struct intel_dpll_hw_state dpll_hw_state = {};
 	u8 pipe_mask;
 	bool active;
 
-	memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
-
-	drm_dbg_kms(&i915->drm, "%s\n", pll->info->name);
-
 	active = intel_dpll_get_hw_state(i915, pll, &dpll_hw_state);
 
 	if (!(pll->info->flags & INTEL_DPLL_ALWAYS_ON)) {
 		I915_STATE_WARN(i915, !pll->on && pll->active_mask,
-				"pll in active use but not on in sw tracking\n");
+				"%s: pll in active use but not on in sw tracking\n",
+				pll->info->name);
 		I915_STATE_WARN(i915, pll->on && !pll->active_mask,
-				"pll is on but not used by any active pipe\n");
+				"%s: pll is on but not used by any active pipe\n",
+				pll->info->name);
 		I915_STATE_WARN(i915, pll->on != active,
-				"pll on state mismatch (expected %i, found %i)\n",
-				pll->on, active);
+				"%s: pll on state mismatch (expected %i, found %i)\n",
+				pll->info->name, pll->on, active);
 	}
 
 	if (!crtc) {
 		I915_STATE_WARN(i915,
 				pll->active_mask & ~pll->state.pipe_mask,
-				"more active pll users than references: 0x%x vs 0x%x\n",
-				pll->active_mask, pll->state.pipe_mask);
+				"%s: more active pll users than references: 0x%x vs 0x%x\n",
+				pll->info->name, pll->active_mask, pll->state.pipe_mask);
 
 		return;
 	}
@@ -4495,21 +4506,30 @@ verify_single_dpll_state(struct drm_i915_private *i915,
 
 	if (new_crtc_state->hw.active)
 		I915_STATE_WARN(i915, !(pll->active_mask & pipe_mask),
-				"pll active mismatch (expected pipe %c in active mask 0x%x)\n",
-				pipe_name(crtc->pipe), pll->active_mask);
+				"%s: pll active mismatch (expected pipe %c in active mask 0x%x)\n",
+				pll->info->name, pipe_name(crtc->pipe), pll->active_mask);
 	else
 		I915_STATE_WARN(i915, pll->active_mask & pipe_mask,
-				"pll active mismatch (didn't expect pipe %c in active mask 0x%x)\n",
-				pipe_name(crtc->pipe), pll->active_mask);
+				"%s: pll active mismatch (didn't expect pipe %c in active mask 0x%x)\n",
+				pll->info->name, pipe_name(crtc->pipe), pll->active_mask);
 
 	I915_STATE_WARN(i915, !(pll->state.pipe_mask & pipe_mask),
-			"pll enabled crtcs mismatch (expected 0x%x in 0x%x)\n",
-			pipe_mask, pll->state.pipe_mask);
+			"%s: pll enabled crtcs mismatch (expected 0x%x in 0x%x)\n",
+			pll->info->name, pipe_mask, pll->state.pipe_mask);
 
 	I915_STATE_WARN(i915,
 			pll->on && memcmp(&pll->state.hw_state, &dpll_hw_state,
 					  sizeof(dpll_hw_state)),
-			"pll hw state mismatch\n");
+			"%s: pll hw state mismatch\n",
+			pll->info->name);
+}
+
+static bool has_alt_port_dpll(const struct intel_shared_dpll *old_pll,
+			      const struct intel_shared_dpll *new_pll)
+{
+	return old_pll && new_pll && old_pll != new_pll &&
+		(old_pll->info->flags & INTEL_DPLL_IS_ALT_PORT_DPLL ||
+		 new_pll->info->flags & INTEL_DPLL_IS_ALT_PORT_DPLL);
 }
 
 void intel_shared_dpll_state_verify(struct intel_atomic_state *state,
@@ -4531,11 +4551,15 @@ void intel_shared_dpll_state_verify(struct intel_atomic_state *state,
 		struct intel_shared_dpll *pll = old_crtc_state->shared_dpll;
 
 		I915_STATE_WARN(i915, pll->active_mask & pipe_mask,
-				"pll active mismatch (didn't expect pipe %c in active mask (0x%x))\n",
-				pipe_name(crtc->pipe), pll->active_mask);
-		I915_STATE_WARN(i915, pll->state.pipe_mask & pipe_mask,
-				"pll enabled crtcs mismatch (found %x in enabled mask (0x%x))\n",
-				pipe_name(crtc->pipe), pll->state.pipe_mask);
+				"%s: pll active mismatch (didn't expect pipe %c in active mask (0x%x))\n",
+				pll->info->name, pipe_name(crtc->pipe), pll->active_mask);
+
+		/* TC ports have both MG/TC and TBT PLL referenced simultaneously */
+		I915_STATE_WARN(i915, !has_alt_port_dpll(old_crtc_state->shared_dpll,
+							 new_crtc_state->shared_dpll) &&
+				pll->state.pipe_mask & pipe_mask,
+				"%s: pll enabled crtcs mismatch (found pipe %c in enabled mask (0x%x))\n",
+				pll->info->name, pipe_name(crtc->pipe), pll->state.pipe_mask);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
index dd4796a617..1a88ccc983 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h
@@ -271,12 +271,16 @@ struct dpll_info {
 	enum intel_dpll_id id;
 
 #define INTEL_DPLL_ALWAYS_ON	(1 << 0)
+#define INTEL_DPLL_IS_ALT_PORT_DPLL	(1 << 1)
 	/**
 	 * @flags:
 	 *
 	 * INTEL_DPLL_ALWAYS_ON
 	 *     Inform the state checker that the DPLL is kept enabled even if
 	 *     not in use by any CRTC.
+	 * INTEL_DPLL_IS_ALT_PORT_DPLL
+	 *     Inform the state checker that the DPLL can be used as a fallback
+	 *     (for TC->TBT fallback).
 	 */
 	u32 flags;
 };
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index 7fd6280c54..15c3dd5d38 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -339,6 +339,17 @@ static int intel_dsb_dewake_scanline(const struct intel_crtc_state *crtc_state)
 	return max(0, vblank_start - intel_usecs_to_scanlines(adjusted_mode, latency));
 }
 
+static u32 dsb_chicken(struct intel_crtc *crtc)
+{
+	if (crtc->mode_flags & I915_MODE_FLAG_VRR)
+		return DSB_CTRL_WAIT_SAFE_WINDOW |
+			DSB_CTRL_NO_WAIT_VBLANK |
+			DSB_INST_WAIT_SAFE_WINDOW |
+			DSB_INST_NO_WAIT_VBLANK;
+	else
+		return 0;
+}
+
 static void _intel_dsb_commit(struct intel_dsb *dsb, u32 ctrl,
 			      int dewake_scanline)
 {
@@ -360,6 +371,9 @@ static void _intel_dsb_commit(struct intel_dsb *dsb, u32 ctrl,
 	intel_de_write_fw(dev_priv, DSB_CTRL(pipe, dsb->id),
 			  ctrl | DSB_ENABLE);
 
+	intel_de_write_fw(dev_priv, DSB_CHICKEN(pipe, dsb->id),
+			  dsb_chicken(crtc));
+
 	intel_de_write_fw(dev_priv, DSB_HEAD(pipe, dsb->id),
 			  i915_ggtt_offset(dsb->vma));
 
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 5d905f932c..eb5bd07439 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -187,10 +187,11 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
 	/*
-	 * TRANS_SET_CONTEXT_LATENCY with VRR enabled
-	 * requires this chicken bit on ADL/DG2.
+	 * This bit seems to have two meanings depending on the platform:
+	 * TGL: generate VRR "safe window" for DSB vblank waits
+	 * ADL/DG2: make TRANS_SET_CONTEXT_LATENCY effective with VRR
 	 */
-	if (DISPLAY_VER(dev_priv) == 13)
+	if (IS_DISPLAY_VER(dev_priv, 12, 13))
 		intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder),
 			     0, PIPE_VBLANK_WITH_DELAY);