1 /*
2 * drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c
3 *
4 * C file for Samsung MFC (Multi Function Codec - FIMV) driver
5 * This file contains functions used to wait for command completion.
6 *
7 * Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
8 * http://www.samsung.com/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/delay.h>
16 #include <linux/errno.h>
17 #include <linux/io.h>
18 #include <linux/sched.h>
19 #include <linux/wait.h>
20 #include "s5p_mfc_common.h"
21 #include "s5p_mfc_debug.h"
22 #include "s5p_mfc_intr.h"
23
s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev * dev,int command)24 int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
25 {
26 int ret;
27
28 ret = wait_event_interruptible_timeout(dev->queue,
29 (dev->int_cond && (dev->int_type == command
30 || dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
31 msecs_to_jiffies(MFC_INT_TIMEOUT));
32 if (ret == 0) {
33 mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
34 dev->int_type, command);
35 return 1;
36 } else if (ret == -ERESTARTSYS) {
37 mfc_err("Interrupted by a signal\n");
38 return 1;
39 }
40 mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
41 dev->int_type, command);
42 if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)
43 return 1;
44 return 0;
45 }
46
s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev * dev)47 void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
48 {
49 dev->int_cond = 0;
50 dev->int_type = 0;
51 dev->int_err = 0;
52 }
53
s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx * ctx,int command,int interrupt)54 int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
55 int command, int interrupt)
56 {
57 int ret;
58
59 if (interrupt) {
60 ret = wait_event_interruptible_timeout(ctx->queue,
61 (ctx->int_cond && (ctx->int_type == command
62 || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
63 msecs_to_jiffies(MFC_INT_TIMEOUT));
64 } else {
65 ret = wait_event_timeout(ctx->queue,
66 (ctx->int_cond && (ctx->int_type == command
67 || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
68 msecs_to_jiffies(MFC_INT_TIMEOUT));
69 }
70 if (ret == 0) {
71 mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
72 ctx->int_type, command);
73 return 1;
74 } else if (ret == -ERESTARTSYS) {
75 mfc_err("Interrupted by a signal\n");
76 return 1;
77 }
78 mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
79 ctx->int_type, command);
80 if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)
81 return 1;
82 return 0;
83 }
84
s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx * ctx)85 void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
86 {
87 ctx->int_cond = 0;
88 ctx->int_type = 0;
89 ctx->int_err = 0;
90 }
91
92