1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c
4 *
5 * C file for Samsung MFC (Multi Function Codec - FIMV) driver
6 * This file contains functions used to wait for command completion.
7 *
8 * Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
9 * http://www.samsung.com/
10 */
11
12#include <linux/delay.h>
13#include <linux/errno.h>
14#include <linux/io.h>
15#include <linux/sched.h>
16#include <linux/wait.h>
17#include "s5p_mfc_common.h"
18#include "s5p_mfc_debug.h"
19#include "s5p_mfc_intr.h"
20
21int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
22{
23	int ret;
24
25	ret = wait_event_interruptible_timeout(dev->queue,
26		(dev->int_cond && (dev->int_type == command
27		|| dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
28		msecs_to_jiffies(MFC_INT_TIMEOUT));
29	if (ret == 0) {
30		mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
31							dev->int_type, command);
32		return 1;
33	} else if (ret == -ERESTARTSYS) {
34		mfc_err("Interrupted by a signal\n");
35		return 1;
36	}
37	mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
38							dev->int_type, command);
39	if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)
40		return 1;
41	return 0;
42}
43
44void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
45{
46	dev->int_cond = 0;
47	dev->int_type = 0;
48	dev->int_err = 0;
49}
50
51int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
52				    int command, int interrupt)
53{
54	int ret;
55
56	if (interrupt) {
57		ret = wait_event_interruptible_timeout(ctx->queue,
58				(ctx->int_cond && (ctx->int_type == command
59			|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
60					msecs_to_jiffies(MFC_INT_TIMEOUT));
61	} else {
62		ret = wait_event_timeout(ctx->queue,
63				(ctx->int_cond && (ctx->int_type == command
64			|| ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
65					msecs_to_jiffies(MFC_INT_TIMEOUT));
66	}
67	if (ret == 0) {
68		mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
69							ctx->int_type, command);
70		return 1;
71	} else if (ret == -ERESTARTSYS) {
72		mfc_err("Interrupted by a signal\n");
73		return 1;
74	}
75	mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
76							ctx->int_type, command);
77	if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)
78		return 1;
79	return 0;
80}
81
82void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
83{
84	ctx->int_cond = 0;
85	ctx->int_type = 0;
86	ctx->int_err = 0;
87}
88
89