[PATCH 2/6] drm/i915: Split current joiner hw state readout

[Stanislav Lisovskiy]

We need to add a new sanity checks and also do
some preparations for adding ultrajoiner hw state readout.
Lets first split reading of the uncompressed joiner and bigjoiner
bit masks into separate functions.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 65 +++++++++++++++-----
 1 file changed, 48 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index ab2f4c046c9b..3954b13ba662 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3581,51 +3581,82 @@ static bool transcoder_ddi_func_is_enabled(struct drm_i915_private *dev_priv,
 	return tmp & TRANS_DDI_FUNC_ENABLE;
 }
 
-static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
-				 u8 *primary_pipes, u8 *secondary_pipes)
+static void enabled_uncompressed_joiner_pipes(struct drm_i915_private *dev_priv,
+					      u8 *primary_pipes, u8 *secondary_pipes)
 {
 	struct intel_crtc *crtc;
 
 	*primary_pipes = 0;
 	*secondary_pipes = 0;
 
+	if (DISPLAY_VER(dev_priv) < 13)
+		return;
+
 	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc,
 					 joiner_pipes(dev_priv)) {
 		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);
+		power_domain = POWER_DOMAIN_PIPE(pipe);
 		with_intel_display_power_if_enabled(dev_priv, power_domain, wakeref) {
 			u32 tmp = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
 
-			if (!(tmp & BIG_JOINER_ENABLE))
-				continue;
-
-			if (tmp & PRIMARY_BIG_JOINER_ENABLE)
+			if (tmp & UNCOMPRESSED_JOINER_PRIMARY)
 				*primary_pipes |= BIT(pipe);
-			else
+			if (tmp & UNCOMPRESSED_JOINER_SECONDARY)
 				*secondary_pipes |= BIT(pipe);
 		}
+	}
+}
 
-		if (DISPLAY_VER(dev_priv) < 13)
-			continue;
+static void enabled_bigjoiner_pipes(struct drm_i915_private *dev_priv,
+				    u8 *primary_pipes, u8 *secondary_pipes)
+{
+	struct intel_crtc *crtc;
 
-		power_domain = POWER_DOMAIN_PIPE(pipe);
+	*primary_pipes = 0;
+	*secondary_pipes = 0;
+
+	for_each_intel_crtc_in_pipe_mask(&dev_priv->drm, crtc,
+					 joiner_pipes(dev_priv)) {
+		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(dev_priv, power_domain, wakeref) {
 			u32 tmp = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
 
-			if (tmp & UNCOMPRESSED_JOINER_PRIMARY)
+			if (!(tmp & BIG_JOINER_ENABLE))
+				continue;
+
+			if (tmp & PRIMARY_BIG_JOINER_ENABLE)
 				*primary_pipes |= BIT(pipe);
-			if (tmp & UNCOMPRESSED_JOINER_SECONDARY)
+			else
 				*secondary_pipes |= BIT(pipe);
 		}
 	}
+}
+
+static void enabled_joiner_pipes(struct drm_i915_private *dev_priv,
+				 u8 *primary_pipes, u8 *secondary_pipes)
+{
+	u8 primary_uncompressed_joiner_pipes, primary_bigjoiner_pipes;
+	u8 secondary_uncompressed_joiner_pipes, secondary_bigjoiner_pipes;
+
+	enabled_uncompressed_joiner_pipes(dev_priv, &primary_uncompressed_joiner_pipes,
+					  &secondary_uncompressed_joiner_pipes);
+
+	enabled_bigjoiner_pipes(dev_priv, &primary_bigjoiner_pipes,
+				&secondary_bigjoiner_pipes);
+
+	*primary_pipes = 0;
+	*secondary_pipes = 0;
+
+	*primary_pipes = primary_uncompressed_joiner_pipes | primary_bigjoiner_pipes;
 
-	/* Joiner pipes should always be consecutive primary and secondary */
-	drm_WARN(&dev_priv->drm, *secondary_pipes != *primary_pipes << 1,
-		 "Joiner misconfigured (primary pipes 0x%x, secondary pipes 0x%x)\n",
-		 *primary_pipes, *secondary_pipes);
+	*secondary_pipes = secondary_uncompressed_joiner_pipes | secondary_bigjoiner_pipes;
 }
 
 static enum pipe get_joiner_primary_pipe(enum pipe pipe, u8 primary_pipes, u8 secondary_pipes)
-- 
2.37.3