[PATCH 09/14] drm/i915: Extract intel_bw_modeset_checks()

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Pull the new_bw_state->active_pipes computation out from
intel_compute_sagv_mask() and move it into the intel_bw.c
(which is arguably the correct place for it).

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_bw.c      | 29 ++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_bw.h      |  1 +
 drivers/gpu/drm/i915/display/intel_display.c |  6 ++++
 drivers/gpu/drm/i915/display/skl_watermark.c |  9 ------
 4 files changed, 36 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index e11fd94e9e29..6fd6c7b535ed 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -1379,6 +1379,35 @@ static int intel_bw_check_data_rate(struct intel_atomic_state *state, bool *chan
 	return 0;
 }
 
+int intel_bw_modeset_checks(struct intel_atomic_state *state)
+{
+	struct intel_display *display = to_intel_display(state);
+	const struct intel_bw_state *old_bw_state;
+	struct intel_bw_state *new_bw_state;
+
+	if (DISPLAY_VER(display) < 9)
+		return 0;
+
+	new_bw_state = intel_atomic_get_bw_state(state);
+	if (IS_ERR(new_bw_state))
+		return PTR_ERR(new_bw_state);
+
+	old_bw_state = intel_atomic_get_old_bw_state(state);
+
+	new_bw_state->active_pipes =
+		intel_calc_active_pipes(state, old_bw_state->active_pipes);
+
+	if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
+		int ret;
+
+		ret = intel_atomic_lock_global_state(&new_bw_state->base);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 int intel_bw_atomic_check(struct intel_atomic_state *state)
 {
 	bool changed = false;
diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h
index d3f92951b057..0efc9858faa1 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.h
+++ b/drivers/gpu/drm/i915/display/intel_bw.h
@@ -67,6 +67,7 @@ intel_atomic_get_bw_state(struct intel_atomic_state *state);
 
 void intel_bw_init_hw(struct drm_i915_private *dev_priv);
 int intel_bw_init(struct drm_i915_private *dev_priv);
+int intel_bw_modeset_checks(struct intel_atomic_state *state);
 int intel_bw_atomic_check(struct intel_atomic_state *state);
 int icl_pcode_restrict_qgv_points(struct drm_i915_private *dev_priv,
 				  u32 points_mask);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 1d7a396bc4ea..69e4c9be28f3 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6423,6 +6423,12 @@ int intel_atomic_check(struct drm_device *dev,
 	if (ret)
 		goto fail;
 
+	if (any_ms) {
+		ret = intel_bw_modeset_checks(state);
+		if (ret)
+			goto fail;
+	}
+
 	ret = intel_compute_global_watermarks(state);
 	if (ret)
 		goto fail;
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 2d0de1c63308..58ba99eacd09 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -498,15 +498,6 @@ static int intel_compute_sagv_mask(struct intel_atomic_state *state)
 	if (!new_bw_state)
 		return 0;
 
-	new_bw_state->active_pipes =
-		intel_calc_active_pipes(state, old_bw_state->active_pipes);
-
-	if (new_bw_state->active_pipes != old_bw_state->active_pipes) {
-		ret = intel_atomic_lock_global_state(&new_bw_state->base);
-		if (ret)
-			return ret;
-	}
-
 	if (intel_can_enable_sagv(i915, new_bw_state) !=
 	    intel_can_enable_sagv(i915, old_bw_state)) {
 		ret = intel_atomic_serialize_global_state(&new_bw_state->base);
-- 
2.45.3