1// SPDX-License-Identifier: MIT
 2/*
 3 * Copyright(c) 2020 Intel Corporation.
 4 */
 5
 6#include "intel_pxp.h"
 7#include "intel_pxp_irq.h"
 8#include "intel_pxp_pm.h"
 9#include "intel_pxp_session.h"
10#include "i915_drv.h"
11
12void intel_pxp_suspend_prepare(struct intel_pxp *pxp)
13{
14	if (!intel_pxp_is_enabled(pxp))
15		return;
16
17	pxp->arb_is_valid = false;
18
19	intel_pxp_invalidate(pxp);
20}
21
22void intel_pxp_suspend(struct intel_pxp *pxp)
23{
24	intel_wakeref_t wakeref;
25
26	if (!intel_pxp_is_enabled(pxp))
27		return;
28
29	with_intel_runtime_pm(&pxp_to_gt(pxp)->i915->runtime_pm, wakeref) {
30		intel_pxp_fini_hw(pxp);
31		pxp->hw_state_invalidated = false;
32	}
33}
34
35void intel_pxp_resume(struct intel_pxp *pxp)
36{
37	if (!intel_pxp_is_enabled(pxp))
38		return;
39
40	/*
41	 * The PXP component gets automatically unbound when we go into S3 and
42	 * re-bound after we come out, so in that scenario we can defer the
43	 * hw init to the bind call.
44	 */
45	if (!pxp->pxp_component)
46		return;
47
48	intel_pxp_init_hw(pxp);
49}
50
51void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
52{
53	if (!intel_pxp_is_enabled(pxp))
54		return;
55
56	pxp->arb_is_valid = false;
57
58	intel_pxp_fini_hw(pxp);
59
60	pxp->hw_state_invalidated = false;
61}