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drivers: npu: add wakeup source API

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This commit is contained in:
spakkkk 2021-02-04 21:31:01 +00:00
parent 9d239e5a00
commit 02b5845785
1 changed files with 7 additions and 0 deletions
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7
drivers/media/platform/msm/npu/npu_mgr.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
* Copyright (C) 2021 XiaoMi, Inc.
*/
/* -------------------------------------------------------------------------
@ -76,6 +77,7 @@ static struct npu_network_cmd *npu_alloc_network_cmd(struct npu_host_ctx *ctx,
uint32_t stats_buf_size);
static void npu_free_network_cmd(struct npu_host_ctx *ctx,
struct npu_network_cmd *cmd);
struct wakeup_source *ws = NULL;
static struct npu_misc_cmd *npu_alloc_misc_cmd(struct npu_host_ctx *ctx);
static void npu_free_misc_cmd(struct npu_host_ctx *ctx,
struct npu_misc_cmd *cmd);
@ -888,6 +890,7 @@ int npu_host_init(struct npu_device *npu_dev)
host_ctx->auto_pil_disable = false;
host_ctx->fw_caps_valid = false;
host_ctx->fw_caps_err_code = 0;
ws = wakeup_source_register(npu_dev->device, "npu-ws");
return 0;
@ -912,6 +915,8 @@ void npu_host_deinit(struct npu_device *npu_dev)
{
struct npu_host_ctx *host_ctx = &npu_dev->host_ctx;
wakeup_source_unregister(ws);
ws = NULL;
kfree(host_ctx->ipc_msg_buf);
kmem_cache_destroy(host_ctx->stats_buf_cache);
kmem_cache_destroy(host_ctx->network_cmd_cache);
@ -1184,6 +1189,7 @@ static void npu_disable_fw_work(struct work_struct *work)
disable_fw_nolock(npu_dev);
host_ctx->bridge_mbox_pwr_on = false;
}
__pm_relax(ws);
mutex_unlock(&host_ctx->lock);
NPU_DBG("Exit disable fw work\n");
}
@ -1224,6 +1230,7 @@ static void npu_bridge_mbox_work(struct work_struct *work)
return;
}
__pm_stay_awake(ws);
/* queue or modify delayed work to disable fw */
mod_delayed_work(host_ctx->wq, &host_ctx->disable_fw_work,
NPU_MBOX_IDLE_TIMEOUT);