// SPDX-License-Identifier: MIT
/*
 * Copyright(c) 2020 Intel Corporation.
 */

#include "i915_drv.h"

#include "intel_pxp.h"
#include "intel_pxp_irq.h"
#include "intel_pxp_pm.h"
#include "intel_pxp_session.h"
#include "intel_pxp_types.h"

void intel_pxp_suspend_prepare(struct intel_pxp *pxp)
{
        if (!intel_pxp_is_enabled(pxp))
                return;

        intel_pxp_end(pxp);

        intel_pxp_invalidate(pxp);
}

void intel_pxp_suspend(struct intel_pxp *pxp)
{
        intel_wakeref_t wakeref;

        if (!intel_pxp_is_enabled(pxp))
                return;

        with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref) {
                intel_pxp_fini_hw(pxp);
                pxp->hw_state_invalidated = false;
        }
}

static void _pxp_resume(struct intel_pxp *pxp, bool take_wakeref)
{
        intel_wakeref_t wakeref;

        if (!intel_pxp_is_enabled(pxp))
                return;

        /*
         * The PXP component gets automatically unbound when we go into S3 and
         * re-bound after we come out, so in that scenario we can defer the
         * hw init to the bind call.
         * NOTE: GSC-CS backend doesn't rely on components.
         */
        if (!HAS_ENGINE(pxp->ctrl_gt, GSC0) && !pxp->pxp_component)
                return;

        if (take_wakeref)
                wakeref = intel_runtime_pm_get(&pxp->ctrl_gt->i915->runtime_pm);
        intel_pxp_init_hw(pxp);
        if (take_wakeref)
                intel_runtime_pm_put(&pxp->ctrl_gt->i915->runtime_pm, wakeref);
}

void intel_pxp_resume_complete(struct intel_pxp *pxp)
{
        _pxp_resume(pxp, true);
}

void intel_pxp_runtime_resume(struct intel_pxp *pxp)
{
        _pxp_resume(pxp, false);
}

void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
{
        if (!intel_pxp_is_enabled(pxp))
                return;

        pxp->arb_is_valid = false;

        intel_pxp_fini_hw(pxp);

        pxp->hw_state_invalidated = false;
}