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