mirror of https://gitee.com/openkylin/linux.git
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
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/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: Tiffany Lin <tiffany.lin@mediatek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/errno.h>
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#include <linux/wait.h>
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#include "mtk_vcodec_drv.h"
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#include "mtk_vcodec_intr.h"
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#include "mtk_vcodec_util.h"
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int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, int command,
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unsigned int timeout_ms)
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{
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wait_queue_head_t *waitqueue;
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long timeout_jiff, ret;
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int status = 0;
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waitqueue = (wait_queue_head_t *)&ctx->queue;
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timeout_jiff = msecs_to_jiffies(timeout_ms);
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ret = wait_event_interruptible_timeout(*waitqueue,
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(ctx->int_cond &&
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(ctx->int_type == command)),
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timeout_jiff);
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if (!ret) {
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status = -1; /* timeout */
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mtk_v4l2_err("[%d] cmd=%d, ctx->type=%d, wait_event_interruptible_timeout time=%ums out %d %d!",
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ctx->id, ctx->type, command, timeout_ms,
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ctx->int_cond, ctx->int_type);
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} else if (-ERESTARTSYS == ret) {
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mtk_v4l2_err("[%d] cmd=%d, ctx->type=%d, wait_event_interruptible_timeout interrupted by a signal %d %d",
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ctx->id, ctx->type, command, ctx->int_cond,
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ctx->int_type);
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status = -1;
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}
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ctx->int_cond = 0;
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ctx->int_type = 0;
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return status;
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}
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EXPORT_SYMBOL(mtk_vcodec_wait_for_done_ctx);
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