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 
21 int 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 
44 void 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 
51 int 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 
82 void 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