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
s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev * dev,int command)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
s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev * dev)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
s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx * ctx,int command,int interrupt)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
s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx * ctx)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