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 14void 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 24void 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 37static 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 60void intel_pxp_resume_complete(struct intel_pxp *pxp) 61{ 62 _pxp_resume(pxp, true); 63} 64 65void intel_pxp_runtime_resume(struct intel_pxp *pxp) 66{ 67 _pxp_resume(pxp, false); 68} 69 70void 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