From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Extract the stuff that writes the dbuf/mbus ratio stuff
into its own function. Will help with correctly sequencing
the operations done during mbus programming.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Reviewed-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/skl_watermark.c | 43 ++++++++++++--------
1 file changed, 25 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index f7e03078bd43..7767c5eada36 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -3653,6 +3653,30 @@ void intel_dbuf_mdclk_cdclk_ratio_update(struct drm_i915_private *i915, u8 ratio
DBUF_MIN_TRACKER_STATE_SERVICE(ratio - 1));
}
+static void intel_dbuf_mdclk_min_tracker_update(struct intel_atomic_state *state)
+{
+ struct drm_i915_private *i915 = to_i915(state->base.dev);
+ const struct intel_dbuf_state *old_dbuf_state =
+ intel_atomic_get_old_dbuf_state(state);
+ const struct intel_dbuf_state *new_dbuf_state =
+ intel_atomic_get_new_dbuf_state(state);
+
+ if (DISPLAY_VER(i915) >= 20 &&
+ old_dbuf_state->mdclk_cdclk_ratio != new_dbuf_state->mdclk_cdclk_ratio) {
+ /*
+ * For Xe2LPD and beyond, when there is a change in the ratio
+ * between MDCLK and CDCLK, updates to related registers need to
+ * happen at a specific point in the CDCLK change sequence. In
+ * that case, we defer to the call to
+ * intel_dbuf_mdclk_cdclk_ratio_update() to the CDCLK logic.
+ */
+ return;
+ }
+
+ intel_dbuf_mdclk_cdclk_ratio_update(i915, new_dbuf_state->mdclk_cdclk_ratio,
+ new_dbuf_state->joined_mbus);
+}
+
static void intel_dbuf_mbus_join_update(struct intel_atomic_state *state)
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
@@ -3683,10 +3707,6 @@ static void intel_dbuf_mbus_join_update(struct intel_atomic_state *state)
static void update_mbus_pre_enable(struct intel_atomic_state *state)
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
- const struct intel_dbuf_state *old_dbuf_state =
- intel_atomic_get_old_dbuf_state(state);
- const struct intel_dbuf_state *new_dbuf_state =
- intel_atomic_get_new_dbuf_state(state);
if (!HAS_MBUS_JOINING(i915))
return;
@@ -3697,20 +3717,7 @@ static void update_mbus_pre_enable(struct intel_atomic_state *state)
*/
intel_dbuf_mbus_join_update(state);
- if (DISPLAY_VER(i915) >= 20 &&
- old_dbuf_state->mdclk_cdclk_ratio != new_dbuf_state->mdclk_cdclk_ratio) {
- /*
- * For Xe2LPD and beyond, when there is a change in the ratio
- * between MDCLK and CDCLK, updates to related registers need to
- * happen at a specific point in the CDCLK change sequence. In
- * that case, we defer to the call to
- * intel_dbuf_mdclk_cdclk_ratio_update() to the CDCLK logic.
- */
- return;
- }
-
- intel_dbuf_mdclk_cdclk_ratio_update(i915, new_dbuf_state->mdclk_cdclk_ratio,
- new_dbuf_state->joined_mbus);
+ intel_dbuf_mdclk_min_tracker_update(state);
}
void intel_dbuf_pre_plane_update(struct intel_atomic_state *state)
--
2.43.2
