tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3* Copyright (c) 2016 MediaTek Inc.
4* Author: Tiffany Lin <tiffany.lin@mediatek.com>
5*/
6
7#include <linux/errno.h>
8#include <linux/wait.h>
9
10#include "mtk_vcodec_drv.h"
11#include "mtk_vcodec_intr.h"
12#include "mtk_vcodec_util.h"
13
14int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, int command,
15 unsigned int timeout_ms)
16{
17 wait_queue_head_t *waitqueue;
18 long timeout_jiff, ret;
19 int status = 0;
20
21 waitqueue = (wait_queue_head_t *)&ctx->queue;
22 timeout_jiff = msecs_to_jiffies(timeout_ms);
23
24 ret = wait_event_interruptible_timeout(*waitqueue,
25 ctx->int_cond,
26 timeout_jiff);
27
28 if (!ret) {
29 status = -1; /* timeout */
30 mtk_v4l2_err("[%d] cmd=%d, ctx->type=%d, wait_event_interruptible_timeout time=%ums out %d %d!",
31 ctx->id, ctx->type, command, timeout_ms,
32 ctx->int_cond, ctx->int_type);
33 } else if (-ERESTARTSYS == ret) {
34 mtk_v4l2_err("[%d] cmd=%d, ctx->type=%d, wait_event_interruptible_timeout interrupted by a signal %d %d",
35 ctx->id, ctx->type, command, ctx->int_cond,
36 ctx->int_type);
37 status = -1;
38 }
39
40 ctx->int_cond = 0;
41 ctx->int_type = 0;
42
43 return status;
44}
45EXPORT_SYMBOL(mtk_vcodec_wait_for_done_ctx);