diff mbox series

[08/12] drm/i915: Implement hw state readout and checks for ultrajoiner

Message ID 20240718081803.3338564-9-ankit.k.nautiyal@intel.com (mailing list archive)
State New, archived
Headers show
Series Ultrajoiner basic functionality series | expand

Commit Message

Ankit Nautiyal July 18, 2024, 8:17 a.m. UTC
From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

Ultrajoiner mode has some new bits and states to be
read out from the hw. Lets make changes accordingly.

v2: Fix checkpatch warnings. (Ankit)

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c  | 127 ++++++++++++++----
 .../gpu/drm/i915/display/intel_vdsc_regs.h    |   3 +
 2 files changed, 101 insertions(+), 29 deletions(-)

Comments

Kandpal, Suraj July 31, 2024, 9:57 a.m. UTC | #1
> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Ankit
> Nautiyal
> Sent: Thursday, July 18, 2024 1:48 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: Lisovskiy, Stanislav <stanislav.lisovskiy@intel.com>; Saarinen, Jani
> <jani.saarinen@intel.com>; ville.syrjala@linux.intel.com
> Subject: [PATCH 08/12] drm/i915: Implement hw state readout and checks
> for ultrajoiner
> 
> From: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> 
> Ultrajoiner mode has some new bits and states to be read out from the hw.
> Lets make changes accordingly.
> 
> v2: Fix checkpatch warnings. (Ankit)
> 
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c  | 127 ++++++++++++++----
>  .../gpu/drm/i915/display/intel_vdsc_regs.h    |   3 +
>  2 files changed, 101 insertions(+), 29 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 59cb0d2f773b..d032fd8011d5 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -3648,17 +3648,55 @@ static void enabled_bigjoiner_pipes(struct
> drm_i915_private *dev_priv,
>  	}
>  }
> 
> -static u8 expected_secondary_pipes(u8 primary_pipes)
> +static void enabled_ultrajoiner_pipes(struct drm_i915_private *i915,
> +				      u8 *primary_pipes, u8
> *secondary_pipes)
>  {
> -	return primary_pipes << 1;
> +	struct intel_crtc *crtc;
> +
> +	*primary_pipes = 0;
> +	*secondary_pipes = 0;
> +
> +	if (DISPLAY_VER(i915) < 14)
> +		return;
> +
> +	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
> +					 joiner_pipes(i915)) {
> +		enum intel_display_power_domain power_domain;
> +		enum pipe pipe = crtc->pipe;
> +		intel_wakeref_t wakeref;
> +
> +		power_domain = intel_dsc_power_domain(crtc, (enum
> transcoder)pipe);
> +		with_intel_display_power_if_enabled(i915, power_domain,
> wakeref) {
> +			u32 tmp = intel_de_read(i915,
> ICL_PIPE_DSS_CTL1(pipe));
> +
> +			if (!(tmp & ULTRA_JOINER_ENABLE))
> +				continue;
> +
> +			if (tmp & PRIMARY_ULTRA_JOINER_ENABLE)
> +				*primary_pipes |= BIT(pipe);
> +			else
> +				*secondary_pipes |= BIT(pipe);
> +		}
> +	}
> +}
> +
> +static u8 expected_secondary_pipes(u8 primary_pipes, bool
> +ultrajoiner_used) {
> +	if (!ultrajoiner_used)
> +		return primary_pipes << 1;
> +	else
> +		return GENMASK(3, primary_pipes + 1);
>  }
> 
>  static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
> -				 u8 *primary_pipes, u8 *secondary_pipes)
> +				 u8 *primary_pipes, u8 *secondary_pipes,
> +				 bool *ultrajoiner_used)
>  {
>  	u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes;
> +	u8 primary_ultrajoiner_pipes;
>  	u8 secondary_uncompressed_joiner_pipes,
> secondary_bigjoiner_pipes;
> -	u8 uncompressed_joiner_pipes, bigjoiner_pipes;
> +	u8 secondary_ultrajoiner_pipes;
> +	u8 uncompressed_joiner_pipes, bigjoiner_pipes, ultrajoiner_pipes;
> 
>  	enabled_uncompressed_joiner_pipes(dev_priv,
> &primary_uncompressed_joiner_pipes,
> 
> &secondary_uncompressed_joiner_pipes);
> @@ -3666,32 +3704,49 @@ static void enabled_joiner_pipes(struct
> drm_i915_private *dev_priv,
>  	enabled_bigjoiner_pipes(dev_priv, &primary_bigjoiner_pipes,
>  				&secondary_bigjoiner_pipes);
> 
> +	enabled_ultrajoiner_pipes(dev_priv, &primary_ultrajoiner_pipes,
> +				  &secondary_ultrajoiner_pipes);
> +
>  	uncompressed_joiner_pipes = primary_uncompressed_joiner_pipes
> |
>  				    secondary_uncompressed_joiner_pipes;
>  	bigjoiner_pipes = primary_bigjoiner_pipes |
> secondary_bigjoiner_pipes;
> +	ultrajoiner_pipes = primary_ultrajoiner_pipes |
> secondary_ultrajoiner_pipes;
> +	*ultrajoiner_used = ultrajoiner_pipes != 0;
> 
>  	drm_WARN(&dev_priv->drm, (uncompressed_joiner_pipes &
> bigjoiner_pipes) != 0,
>  		 "Uncomressed joiner pipes(%x) and bigjoiner pipes(%x)
> can't intersect\n",
>  		 uncompressed_joiner_pipes, bigjoiner_pipes);
> +	drm_WARN(&dev_priv->drm, (ultrajoiner_pipes & bigjoiner_pipes)
> != ultrajoiner_pipes,
> +		 "Ultrajoiner pipes(%x) should be bigjoiner pipes(%x)\n",
> +		 ultrajoiner_pipes, bigjoiner_pipes);
> +
>  	drm_WARN(&dev_priv->drm, secondary_bigjoiner_pipes !=
> -		 expected_secondary_pipes(primary_bigjoiner_pipes),
> +		 expected_secondary_pipes(primary_bigjoiner_pipes,
> +*ultrajoiner_used),
>  		 "Wrong secondary bigjoiner pipes(expected %x, current
> %x)\n",
> -		 expected_secondary_pipes(primary_bigjoiner_pipes),
> +		 expected_secondary_pipes(primary_bigjoiner_pipes,
> +*ultrajoiner_used),
>  		 secondary_bigjoiner_pipes);
>  	drm_WARN(&dev_priv->drm,
> secondary_uncompressed_joiner_pipes !=
> -
> expected_secondary_pipes(primary_uncompressed_joiner_pipes),
> +
> expected_secondary_pipes(primary_uncompressed_joiner_pipes,
> +*ultrajoiner_used),
>  		 "Wrong secondary uncompressed joiner pipes(expected %x,
> current %x)\n",
> -
> expected_secondary_pipes(primary_uncompressed_joiner_pipes),
> +
> expected_secondary_pipes(primary_uncompressed_joiner_pipes,
> +*ultrajoiner_used),
>  		 secondary_uncompressed_joiner_pipes);
> +	drm_WARN(&dev_priv->drm, secondary_ultrajoiner_pipes !=
> +		 expected_secondary_pipes(primary_ultrajoiner_pipes,
> *ultrajoiner_used),
> +		 "Wrong secondary ultrajoiner pipes(expected %x, current
> %x)\n",
> +		 expected_secondary_pipes(primary_ultrajoiner_pipes,
> *ultrajoiner_used),
> +		 secondary_ultrajoiner_pipes);
> 
>  	*primary_pipes = 0;
>  	*secondary_pipes = 0;
> 
> -	*primary_pipes = primary_uncompressed_joiner_pipes |
> primary_bigjoiner_pipes;
> -	*secondary_pipes = secondary_uncompressed_joiner_pipes |
> secondary_bigjoiner_pipes;
> +	*primary_pipes = primary_uncompressed_joiner_pipes |
> primary_bigjoiner_pipes |
> +			 primary_ultrajoiner_pipes;
> +	*secondary_pipes = secondary_uncompressed_joiner_pipes |
> secondary_bigjoiner_pipes |
> +			 secondary_ultrajoiner_pipes;
>  }
> 
> -static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8
> primary_pipes, u8 secondary_pipes)
> +static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8
> primary_pipes,
> +					 u8 secondary_pipes, bool
> ultrajoiner_used)
>  {
>  	if ((secondary_pipes & BIT(pipe)) == 0)
>  		return pipe;
> @@ -3699,27 +3754,37 @@ static enum pipe
> get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 se
>  	/* ignore everything above our pipe */
>  	primary_pipes &= ~GENMASK(7, pipe);
> 
> -	/* highest remaining bit should be our primary pipe */
> -	return fls(primary_pipes) - 1;
> +	if (!ultrajoiner_used)
> +		/* highest remaining bit should be our master pipe */
> +		return fls(primary_pipes) - 1;
> +
> +	/* lowest remaining bit should be our primary master pipe */
> +	return ffs(primary_pipes) - 1;
>  }
> 
> -static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes,
> u8 secondary_pipes)
> +static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes,
> +				     u8 secondary_pipes, bool
> ultrajoiner_used)
>  {
>  	enum pipe primary_pipe, next_primary_pipe;
> 
> -	primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes,
> secondary_pipes);
> +	primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes,
> +					       secondary_pipes,
> ultrajoiner_used);
> 
>  	if ((primary_pipes & BIT(primary_pipe)) == 0)
>  		return 0;
> 
> -	/* ignore our primary pipe and everything below it */
> -	primary_pipes &= ~GENMASK(primary_pipe, 0);
> -	/* make sure a high bit is set for the ffs() */
> -	primary_pipes |= BIT(7);
> -	/* lowest remaining bit should be the next primary pipe */
> -	next_primary_pipe = ffs(primary_pipes) - 1;
> +	if (!ultrajoiner_used) {
> +		/* ignore our primary pipe and everything below it */
> +		primary_pipes &= ~GENMASK(primary_pipe, 0);
> +		/* make sure a high bit is set for the ffs() */
> +		primary_pipes |= BIT(7);
> +		/* lowest remaining bit should be the next primary pipe */
> +		next_primary_pipe = ffs(primary_pipes) - 1;
> 
> -	return secondary_pipes & GENMASK(next_primary_pipe - 1,
> primary_pipe);
> +		return secondary_pipes & GENMASK(next_primary_pipe - 1,
> primary_pipe);
> +	} else {
> +		return (secondary_pipes | primary_pipes) &
> ~BIT(primary_pipe);
> +	}
>  }
> 
>  static u8 hsw_panel_transcoders(struct drm_i915_private *i915) @@ -
> 3740,6 +3805,7 @@ static u8 hsw_enabled_transcoders(struct intel_crtc
> *crtc)
>  	enum transcoder cpu_transcoder;
>  	u8 primary_pipes, secondary_pipes;
>  	u8 enabled_transcoders = 0;
> +	bool ultrajoiner_used;
> 
>  	/*
>  	 * XXX: Do intel_display_power_get_if_enabled before reading this
> (for @@ -3790,11 +3856,12 @@ static u8 hsw_enabled_transcoders(struct
> intel_crtc *crtc)
>  	if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
>  		enabled_transcoders |= BIT(cpu_transcoder);
> 
> -	/* joiner secondary -> consider the primary pipe's transcoder as
> well */
> -	enabled_joiner_pipes(dev_priv, &primary_pipes,
> &secondary_pipes);
> +	/* joiner slave -> consider the master pipe's transcoder as well */

Why is the master slave terminology coming here when we have consistently using
Primary secondary terminology

Regards,
Suraj Kandpal
> +	enabled_joiner_pipes(dev_priv, &primary_pipes, &secondary_pipes,
> +&ultrajoiner_used);
>  	if (secondary_pipes & BIT(crtc->pipe)) {
>  		cpu_transcoder = (enum transcoder)
> -			get_joiner_primary_pipe(crtc->pipe, primary_pipes,
> secondary_pipes);
> +			get_joiner_primary_pipe(crtc->pipe, primary_pipes,
> +						secondary_pipes,
> ultrajoiner_used);
>  		if (transcoder_ddi_func_is_enabled(dev_priv,
> cpu_transcoder))
>  			enabled_transcoders |= BIT(cpu_transcoder);
>  	}
> @@ -3926,16 +3993,18 @@ static void intel_joiner_get_config(struct
> intel_crtc_state *crtc_state)
>  	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
>  	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
>  	u8 primary_pipes, secondary_pipes;
> +	bool ultrajoiner_used;
>  	enum pipe pipe = crtc->pipe;
> 
> -	enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes);
> +	enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes,
> +&ultrajoiner_used);
> 
>  	if (((primary_pipes | secondary_pipes) & BIT(pipe)) == 0)
>  		return;
> 
> -	crtc_state->joiner_pipes =
> -		BIT(get_joiner_primary_pipe(pipe, primary_pipes,
> secondary_pipes)) |
> -		get_joiner_secondary_pipes(pipe, primary_pipes,
> secondary_pipes);
> +	crtc_state->joiner_pipes = BIT(get_joiner_primary_pipe(pipe,
> primary_pipes,
> +							       secondary_pipes,
> ultrajoiner_used)) |
> +				   get_joiner_secondary_pipes(pipe,
> primary_pipes,
> +							      secondary_pipes,
> ultrajoiner_used);
>  }
> 
>  static bool hsw_get_pipe_config(struct intel_crtc *crtc, diff --git
> a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> index f921ad67b587..db07c9775892 100644
> --- a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> +++ b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
> @@ -37,6 +37,9 @@
>  #define  SPLITTER_CONFIGURATION_MASK		REG_GENMASK(26,
> 25)
>  #define  SPLITTER_CONFIGURATION_2_SEGMENT
> 	REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 0)
>  #define  SPLITTER_CONFIGURATION_4_SEGMENT
> 	REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 1)
> +
> +#define  ULTRA_JOINER_ENABLE			REG_BIT(23)
> +#define  PRIMARY_ULTRA_JOINER_ENABLE		REG_BIT(22)
>  #define  UNCOMPRESSED_JOINER_PRIMARY		(1 << 21)
>  #define  UNCOMPRESSED_JOINER_SECONDARY		(1 << 20)
> 
> --
> 2.45.2
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 59cb0d2f773b..d032fd8011d5 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3648,17 +3648,55 @@  static void enabled_bigjoiner_pipes(struct drm_i915_private *dev_priv,
 	}
 }
 
-static u8 expected_secondary_pipes(u8 primary_pipes)
+static void enabled_ultrajoiner_pipes(struct drm_i915_private *i915,
+				      u8 *primary_pipes, u8 *secondary_pipes)
 {
-	return primary_pipes << 1;
+	struct intel_crtc *crtc;
+
+	*primary_pipes = 0;
+	*secondary_pipes = 0;
+
+	if (DISPLAY_VER(i915) < 14)
+		return;
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
+					 joiner_pipes(i915)) {
+		enum intel_display_power_domain power_domain;
+		enum pipe pipe = crtc->pipe;
+		intel_wakeref_t wakeref;
+
+		power_domain = intel_dsc_power_domain(crtc, (enum transcoder)pipe);
+		with_intel_display_power_if_enabled(i915, power_domain, wakeref) {
+			u32 tmp = intel_de_read(i915, ICL_PIPE_DSS_CTL1(pipe));
+
+			if (!(tmp & ULTRA_JOINER_ENABLE))
+				continue;
+
+			if (tmp & PRIMARY_ULTRA_JOINER_ENABLE)
+				*primary_pipes |= BIT(pipe);
+			else
+				*secondary_pipes |= BIT(pipe);
+		}
+	}
+}
+
+static u8 expected_secondary_pipes(u8 primary_pipes, bool ultrajoiner_used)
+{
+	if (!ultrajoiner_used)
+		return primary_pipes << 1;
+	else
+		return GENMASK(3, primary_pipes + 1);
 }
 
 static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
-				 u8 *primary_pipes, u8 *secondary_pipes)
+				 u8 *primary_pipes, u8 *secondary_pipes,
+				 bool *ultrajoiner_used)
 {
 	u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes;
+	u8 primary_ultrajoiner_pipes;
 	u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes;
-	u8 uncompressed_joiner_pipes, bigjoiner_pipes;
+	u8 secondary_ultrajoiner_pipes;
+	u8 uncompressed_joiner_pipes, bigjoiner_pipes, ultrajoiner_pipes;
 
 	enabled_uncompressed_joiner_pipes(dev_priv, &primary_uncompressed_joiner_pipes,
 					  &secondary_uncompressed_joiner_pipes);
@@ -3666,32 +3704,49 @@  static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
 	enabled_bigjoiner_pipes(dev_priv, &primary_bigjoiner_pipes,
 				&secondary_bigjoiner_pipes);
 
+	enabled_ultrajoiner_pipes(dev_priv, &primary_ultrajoiner_pipes,
+				  &secondary_ultrajoiner_pipes);
+
 	uncompressed_joiner_pipes = primary_uncompressed_joiner_pipes |
 				    secondary_uncompressed_joiner_pipes;
 	bigjoiner_pipes = primary_bigjoiner_pipes | secondary_bigjoiner_pipes;
+	ultrajoiner_pipes = primary_ultrajoiner_pipes | secondary_ultrajoiner_pipes;
+	*ultrajoiner_used = ultrajoiner_pipes != 0;
 
 	drm_WARN(&dev_priv->drm, (uncompressed_joiner_pipes & bigjoiner_pipes) != 0,
 		 "Uncomressed joiner pipes(%x) and bigjoiner pipes(%x) can't intersect\n",
 		 uncompressed_joiner_pipes, bigjoiner_pipes);
+	drm_WARN(&dev_priv->drm, (ultrajoiner_pipes & bigjoiner_pipes) != ultrajoiner_pipes,
+		 "Ultrajoiner pipes(%x) should be bigjoiner pipes(%x)\n",
+		 ultrajoiner_pipes, bigjoiner_pipes);
+
 	drm_WARN(&dev_priv->drm, secondary_bigjoiner_pipes !=
-		 expected_secondary_pipes(primary_bigjoiner_pipes),
+		 expected_secondary_pipes(primary_bigjoiner_pipes, *ultrajoiner_used),
 		 "Wrong secondary bigjoiner pipes(expected %x, current %x)\n",
-		 expected_secondary_pipes(primary_bigjoiner_pipes),
+		 expected_secondary_pipes(primary_bigjoiner_pipes, *ultrajoiner_used),
 		 secondary_bigjoiner_pipes);
 	drm_WARN(&dev_priv->drm, secondary_uncompressed_joiner_pipes !=
-		 expected_secondary_pipes(primary_uncompressed_joiner_pipes),
+		 expected_secondary_pipes(primary_uncompressed_joiner_pipes, *ultrajoiner_used),
 		 "Wrong secondary uncompressed joiner pipes(expected %x, current %x)\n",
-		 expected_secondary_pipes(primary_uncompressed_joiner_pipes),
+		 expected_secondary_pipes(primary_uncompressed_joiner_pipes, *ultrajoiner_used),
 		 secondary_uncompressed_joiner_pipes);
+	drm_WARN(&dev_priv->drm, secondary_ultrajoiner_pipes !=
+		 expected_secondary_pipes(primary_ultrajoiner_pipes, *ultrajoiner_used),
+		 "Wrong secondary ultrajoiner pipes(expected %x, current %x)\n",
+		 expected_secondary_pipes(primary_ultrajoiner_pipes, *ultrajoiner_used),
+		 secondary_ultrajoiner_pipes);
 
 	*primary_pipes = 0;
 	*secondary_pipes = 0;
 
-	*primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes;
-	*secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes;
+	*primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes |
+			 primary_ultrajoiner_pipes;
+	*secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes |
+			 secondary_ultrajoiner_pipes;
 }
 
-static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 secondary_pipes)
+static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes,
+					 u8 secondary_pipes, bool ultrajoiner_used)
 {
 	if ((secondary_pipes & BIT(pipe)) == 0)
 		return pipe;
@@ -3699,27 +3754,37 @@  static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 se
 	/* ignore everything above our pipe */
 	primary_pipes &= ~GENMASK(7, pipe);
 
-	/* highest remaining bit should be our primary pipe */
-	return fls(primary_pipes) - 1;
+	if (!ultrajoiner_used)
+		/* highest remaining bit should be our master pipe */
+		return fls(primary_pipes) - 1;
+
+	/* lowest remaining bit should be our primary master pipe */
+	return ffs(primary_pipes) - 1;
 }
 
-static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes, u8 secondary_pipes)
+static u8 get_joiner_secondary_pipes(enum pipe pipe, u8 primary_pipes,
+				     u8 secondary_pipes, bool ultrajoiner_used)
 {
 	enum pipe primary_pipe, next_primary_pipe;
 
-	primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes, secondary_pipes);
+	primary_pipe = get_joiner_primary_pipe(pipe, primary_pipes,
+					       secondary_pipes, ultrajoiner_used);
 
 	if ((primary_pipes & BIT(primary_pipe)) == 0)
 		return 0;
 
-	/* ignore our primary pipe and everything below it */
-	primary_pipes &= ~GENMASK(primary_pipe, 0);
-	/* make sure a high bit is set for the ffs() */
-	primary_pipes |= BIT(7);
-	/* lowest remaining bit should be the next primary pipe */
-	next_primary_pipe = ffs(primary_pipes) - 1;
+	if (!ultrajoiner_used) {
+		/* ignore our primary pipe and everything below it */
+		primary_pipes &= ~GENMASK(primary_pipe, 0);
+		/* make sure a high bit is set for the ffs() */
+		primary_pipes |= BIT(7);
+		/* lowest remaining bit should be the next primary pipe */
+		next_primary_pipe = ffs(primary_pipes) - 1;
 
-	return secondary_pipes & GENMASK(next_primary_pipe - 1, primary_pipe);
+		return secondary_pipes & GENMASK(next_primary_pipe - 1, primary_pipe);
+	} else {
+		return (secondary_pipes | primary_pipes) & ~BIT(primary_pipe);
+	}
 }
 
 static u8 hsw_panel_transcoders(struct drm_i915_private *i915)
@@ -3740,6 +3805,7 @@  static u8 hsw_enabled_transcoders(struct intel_crtc *crtc)
 	enum transcoder cpu_transcoder;
 	u8 primary_pipes, secondary_pipes;
 	u8 enabled_transcoders = 0;
+	bool ultrajoiner_used;
 
 	/*
 	 * XXX: Do intel_display_power_get_if_enabled before reading this (for
@@ -3790,11 +3856,12 @@  static u8 hsw_enabled_transcoders(struct intel_crtc *crtc)
 	if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
 		enabled_transcoders |= BIT(cpu_transcoder);
 
-	/* joiner secondary -> consider the primary pipe's transcoder as well */
-	enabled_joiner_pipes(dev_priv, &primary_pipes, &secondary_pipes);
+	/* joiner slave -> consider the master pipe's transcoder as well */
+	enabled_joiner_pipes(dev_priv, &primary_pipes, &secondary_pipes, &ultrajoiner_used);
 	if (secondary_pipes & BIT(crtc->pipe)) {
 		cpu_transcoder = (enum transcoder)
-			get_joiner_primary_pipe(crtc->pipe, primary_pipes, secondary_pipes);
+			get_joiner_primary_pipe(crtc->pipe, primary_pipes,
+						secondary_pipes, ultrajoiner_used);
 		if (transcoder_ddi_func_is_enabled(dev_priv, cpu_transcoder))
 			enabled_transcoders |= BIT(cpu_transcoder);
 	}
@@ -3926,16 +3993,18 @@  static void intel_joiner_get_config(struct intel_crtc_state *crtc_state)
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
 	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
 	u8 primary_pipes, secondary_pipes;
+	bool ultrajoiner_used;
 	enum pipe pipe = crtc->pipe;
 
-	enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes);
+	enabled_joiner_pipes(i915, &primary_pipes, &secondary_pipes, &ultrajoiner_used);
 
 	if (((primary_pipes | secondary_pipes) & BIT(pipe)) == 0)
 		return;
 
-	crtc_state->joiner_pipes =
-		BIT(get_joiner_primary_pipe(pipe, primary_pipes, secondary_pipes)) |
-		get_joiner_secondary_pipes(pipe, primary_pipes, secondary_pipes);
+	crtc_state->joiner_pipes = BIT(get_joiner_primary_pipe(pipe, primary_pipes,
+							       secondary_pipes, ultrajoiner_used)) |
+				   get_joiner_secondary_pipes(pipe, primary_pipes,
+							      secondary_pipes, ultrajoiner_used);
 }
 
 static bool hsw_get_pipe_config(struct intel_crtc *crtc,
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
index f921ad67b587..db07c9775892 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_vdsc_regs.h
@@ -37,6 +37,9 @@ 
 #define  SPLITTER_CONFIGURATION_MASK		REG_GENMASK(26, 25)
 #define  SPLITTER_CONFIGURATION_2_SEGMENT	REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 0)
 #define  SPLITTER_CONFIGURATION_4_SEGMENT	REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 1)
+
+#define  ULTRA_JOINER_ENABLE			REG_BIT(23)
+#define  PRIMARY_ULTRA_JOINER_ENABLE		REG_BIT(22)
 #define  UNCOMPRESSED_JOINER_PRIMARY		(1 << 21)
 #define  UNCOMPRESSED_JOINER_SECONDARY		(1 << 20)