From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Add some debugs on what exactly we're doing to the QGV point mask in the icl+ sagv pre/post plane update hooks. Currently we're just guessing. Cc: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_pm.c | 37 ++++++++++++++++----------------- 1 file changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8b70cdc3b58b..5d1f1a9988bb 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3818,26 +3818,22 @@ static void icl_sagv_pre_plane_update(struct intel_atomic_state *state) intel_atomic_get_old_bw_state(state); const struct intel_bw_state *new_bw_state = intel_atomic_get_new_bw_state(state); - u32 new_mask; + u32 old_mask, new_mask; if (!new_bw_state) return; - /* - * Nothing to mask - */ - if (new_bw_state->qgv_points_mask == old_bw_state->qgv_points_mask) - return; - + old_mask = old_bw_state->qgv_points_mask; new_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask; - /* - * If new mask is zero - means there is nothing to mask, - * we can only unmask, which should be done in unmask. - */ - if (!new_mask) + if (old_mask == new_mask) return; + WARN_ON(!new_bw_state->base.changed); + + drm_dbg_kms(&dev_priv->drm, "Restricting QGV points: 0x%x -> 0x%x\n", + old_mask, new_mask); + /* * Restrict required qgv points before updating the configuration. * According to BSpec we can't mask and unmask qgv points at the same @@ -3854,19 +3850,22 @@ static void icl_sagv_post_plane_update(struct intel_atomic_state *state) intel_atomic_get_old_bw_state(state); const struct intel_bw_state *new_bw_state = intel_atomic_get_new_bw_state(state); - u32 new_mask = 0; + u32 old_mask, new_mask; if (!new_bw_state) return; - /* - * Nothing to unmask - */ - if (new_bw_state->qgv_points_mask == old_bw_state->qgv_points_mask) - return; - + old_mask = old_bw_state->qgv_points_mask | new_bw_state->qgv_points_mask; new_mask = new_bw_state->qgv_points_mask; + if (old_mask == new_mask) + return; + + WARN_ON(!new_bw_state->base.changed); + + drm_dbg_kms(&dev_priv->drm, "Relaxing QGV points: 0x%x -> 0x%x\n", + old_mask, new_mask); + /* * Allow required qgv points after updating the configuration. * According to BSpec we can't mask and unmask qgv points at the same -- 2.34.1
