| 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(rpm: &pxp->ctrl_gt->i915->runtime_pm); |
| 55 | intel_pxp_init_hw(pxp); |
| 56 | if (take_wakeref) |
| 57 | intel_runtime_pm_put(rpm: &pxp->ctrl_gt->i915->runtime_pm, wref: wakeref); |
| 58 | } |
| 59 | |
| 60 | void intel_pxp_resume_complete(struct intel_pxp *pxp) |
| 61 | { |
| 62 | _pxp_resume(pxp, take_wakeref: true); |
| 63 | } |
| 64 | |
| 65 | void intel_pxp_runtime_resume(struct intel_pxp *pxp) |
| 66 | { |
| 67 | _pxp_resume(pxp, take_wakeref: 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 |