mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
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75bfcf326d
Add suspend resume hooks function and handling of sc7 events. Bug 3583331 Bug 3826630 Signed-off-by: Mahesh Kumar <mahkumar@nvidia.com> Change-Id: I920b02ad46a76330febe666fe17e8d328f744b1d Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2834856 Reviewed-by: Arun Swain <arswain@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2824218 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
/*
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* Copyright (c) 2019-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <dce.h>
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#include <dce-cond.h>
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#include <dce-lock.h>
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#include <dce-worker.h>
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#include <dce-util-common.h>
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#include <interface/dce-admin-cmds.h>
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/*
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* dce_wait_interruptible : Wait for a given condition
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*
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* @d : Pointer to tegra_dce struct.
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* @msg_id : index of wait condition
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*
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* Return : 0 if successful else error code
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*/
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int dce_wait_interruptible(struct tegra_dce *d, u32 msg_id)
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{
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struct dce_wait_cond *wait;
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if (msg_id >= DCE_MAX_WAIT) {
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dce_err(d, "Invalid wait requested %u", msg_id);
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return -EINVAL;
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}
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wait = &d->ipc_waits[msg_id];
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atomic_set(&wait->complete, 0);
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DCE_COND_WAIT_INTERRUPTIBLE(&wait->cond_wait,
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atomic_read(&wait->complete) == 1);
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if (atomic_read(&wait->complete) != 1)
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return -EINTR;
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atomic_set(&wait->complete, 0);
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return 0;
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}
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/*
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* dce_wakeup_interruptible : Wakeup waiting task on given condition
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*
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* @d : Pointer to tegra_dce struct.
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* @msg_id : index of wait condition
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*
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* Return : void
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*/
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void dce_wakeup_interruptible(struct tegra_dce *d, u32 msg_id)
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{
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struct dce_wait_cond *wait;
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if (msg_id >= DCE_MAX_WAIT) {
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dce_err(d, "Invalid wait requested %u", msg_id);
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return;
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}
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wait = &d->ipc_waits[msg_id];
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atomic_set(&wait->complete, 1);
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dce_cond_signal_interruptible(&wait->cond_wait);
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}
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/**
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* dce_work_cond_sw_resource_init : Init dce workqueues related resources
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Return : 0 if successful else error code
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*/
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int dce_work_cond_sw_resource_init(struct tegra_dce *d)
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{
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int ret = 0;
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int i;
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ret = dce_init_work(d, &d->dce_bootstrap_work, dce_bootstrap_work_fn);
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if (ret) {
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dce_err(d, "Bootstrap work init failed");
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goto exit;
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}
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ret = dce_init_work(d, &d->dce_resume_work, dce_resume_work_fn);
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if (ret) {
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dce_err(d, "resume work init failed");
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goto exit;
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}
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for (i = 0; i < DCE_MAX_WAIT; i++) {
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struct dce_wait_cond *wait = &d->ipc_waits[i];
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if (dce_cond_init(&wait->cond_wait)) {
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dce_err(d, "dce wait condition %d init failed", i);
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ret = -1;
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goto init_error;
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}
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atomic_set(&wait->complete, 0);
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}
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return 0;
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init_error:
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while (i >= 0) {
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struct dce_wait_cond *wait = &d->ipc_waits[i];
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dce_cond_destroy(&wait->cond_wait);
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i--;
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}
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exit:
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return ret;
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}
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/**
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* dce_work_cond_sw_resource_deinit : de-init dce workqueues related resources
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Return : void
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*/
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void dce_work_cond_sw_resource_deinit(struct tegra_dce *d)
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{
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int i;
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for (i = 0; i < DCE_MAX_WAIT; i++) {
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struct dce_wait_cond *wait = &d->ipc_waits[i];
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dce_cond_destroy(&wait->cond_wait);
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atomic_set(&wait->complete, 0);
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}
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}
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