+static void readout_dpll_hw_state(struct drm_i915_private *i915,
+ struct intel_shared_dpll *pll)
+{
+ struct intel_crtc *crtc;
+
+ pll->on = pll->info->funcs->get_hw_state(i915, pll,
+ &pll->state.hw_state);
+
+ if (IS_ELKHARTLAKE(i915) && pll->on &&
+ pll->info->id == DPLL_ID_EHL_DPLL4) {
+ pll->wakeref = intel_display_power_get(i915,
+ POWER_DOMAIN_DPLL_DC_OFF);
+ }
+
+ pll->state.crtc_mask = 0;
+ for_each_intel_crtc(&i915->drm, crtc) {
+ struct intel_crtc_state *crtc_state =
+ to_intel_crtc_state(crtc->base.state);
+
+ if (crtc_state->hw.active && crtc_state->shared_dpll == pll)
+ pll->state.crtc_mask |= 1 << crtc->pipe;
+ }
+ pll->active_mask = pll->state.crtc_mask;
+
+ drm_dbg_kms(&i915->drm,
+ "%s hw state readout: crtc_mask 0x%08x, on %i\n",
+ pll->info->name, pll->state.crtc_mask, pll->on);
+}
+
+void intel_dpll_readout_hw_state(struct drm_i915_private *i915)
+{
+ int i;
+
+ for (i = 0; i < i915->num_shared_dpll; i++)
+ readout_dpll_hw_state(i915, &i915->shared_dplls[i]);
+}
+
+static void sanitize_dpll_state(struct drm_i915_private *i915,
+ struct intel_shared_dpll *pll)
+{
+ if (!pll->on || pll->active_mask)
+ return;
+
+ drm_dbg_kms(&i915->drm,
+ "%s enabled but not in use, disabling\n",
+ pll->info->name);
+
+ pll->info->funcs->disable(i915, pll);
+ pll->on = false;
+}
+
+void intel_dpll_sanitize_state(struct drm_i915_private *i915)
+{
+ int i;
+
+ for (i = 0; i < i915->num_shared_dpll; i++)
+ sanitize_dpll_state(i915, &i915->shared_dplls[i]);
+}
+