9e134ed720
On legacy platforms, KCR HW enabling is done at the time the mei component interface is bound. It's also disabled during unbind. However, for MTL onwards, we don't depend on a tee component to start sending GSC-CS firmware messages. Thus, immediately enable (or disable) KCR HW on PXP's init, fini and resume. Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230511231738.1077674-8-alan.previn.teres.alexis@intel.com
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright(c) 2020 Intel Corporation.
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*/
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#include "i915_drv.h"
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#include "intel_pxp.h"
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#include "intel_pxp_irq.h"
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#include "intel_pxp_pm.h"
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#include "intel_pxp_session.h"
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#include "intel_pxp_types.h"
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void intel_pxp_suspend_prepare(struct intel_pxp *pxp)
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{
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if (!intel_pxp_is_enabled(pxp))
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return;
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intel_pxp_end(pxp);
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intel_pxp_invalidate(pxp);
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}
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void intel_pxp_suspend(struct intel_pxp *pxp)
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{
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intel_wakeref_t wakeref;
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if (!intel_pxp_is_enabled(pxp))
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return;
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with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref) {
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intel_pxp_fini_hw(pxp);
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pxp->hw_state_invalidated = false;
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}
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}
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void intel_pxp_resume_complete(struct intel_pxp *pxp)
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{
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if (!intel_pxp_is_enabled(pxp))
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return;
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/*
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* The PXP component gets automatically unbound when we go into S3 and
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* re-bound after we come out, so in that scenario we can defer the
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* hw init to the bind call.
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* NOTE: GSC-CS backend doesn't rely on components.
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*/
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if (!HAS_ENGINE(pxp->ctrl_gt, GSC0) && !pxp->pxp_component)
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return;
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intel_pxp_init_hw(pxp);
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}
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void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
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{
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if (!intel_pxp_is_enabled(pxp))
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return;
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pxp->arb_is_valid = false;
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intel_pxp_fini_hw(pxp);
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pxp->hw_state_invalidated = false;
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}
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