1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright(c) 2020 Intel Corporation. 4 */ 5 6 #include "i915_drv.h" 7 8 #include "intel_pxp.h" 9 #include "intel_pxp_irq.h" 10 #include "intel_pxp_pm.h" 11 #include "intel_pxp_session.h" 12 #include "intel_pxp_types.h" 13 14 void intel_pxp_suspend_prepare(struct intel_pxp *pxp) 15 { 16 if (!intel_pxp_is_enabled(pxp)) 17 return; 18 19 intel_pxp_end(pxp); 20 21 intel_pxp_invalidate(pxp); 22 } 23 24 void intel_pxp_suspend(struct intel_pxp *pxp) 25 { 26 intel_wakeref_t wakeref; 27 28 if (!intel_pxp_is_enabled(pxp)) 29 return; 30 31 with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref) { 32 intel_pxp_fini_hw(pxp); 33 pxp->hw_state_invalidated = false; 34 } 35 } 36 37 static void _pxp_resume(struct intel_pxp *pxp, bool take_wakeref) 38 { 39 intel_wakeref_t wakeref; 40 41 if (!intel_pxp_is_enabled(pxp)) 42 return; 43 44 /* 45 * The PXP component gets automatically unbound when we go into S3 and 46 * re-bound after we come out, so in that scenario we can defer the 47 * hw init to the bind call. 48 * NOTE: GSC-CS backend doesn't rely on components. 49 */ 50 if (!HAS_ENGINE(pxp->ctrl_gt, GSC0) && !pxp->pxp_component) 51 return; 52 53 if (take_wakeref) 54 wakeref = intel_runtime_pm_get(&pxp->ctrl_gt->i915->runtime_pm); 55 intel_pxp_init_hw(pxp); 56 if (take_wakeref) 57 intel_runtime_pm_put(&pxp->ctrl_gt->i915->runtime_pm, wakeref); 58 } 59 60 void intel_pxp_resume_complete(struct intel_pxp *pxp) 61 { 62 _pxp_resume(pxp, true); 63 } 64 65 void intel_pxp_runtime_resume(struct intel_pxp *pxp) 66 { 67 _pxp_resume(pxp, false); 68 } 69 70 void intel_pxp_runtime_suspend(struct intel_pxp *pxp) 71 { 72 if (!intel_pxp_is_enabled(pxp)) 73 return; 74 75 pxp->arb_is_valid = false; 76 77 intel_pxp_fini_hw(pxp); 78 79 pxp->hw_state_invalidated = false; 80 } 81