1 /*
2 * drivers/media/video/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 "regs-mfc.h"
21 #include "s5p_mfc_common.h"
22 #include "s5p_mfc_debug.h"
23 #include "s5p_mfc_intr.h"
24
s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev * dev,int command)25 int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
26 {
27 int ret;
28
29 ret = wait_event_interruptible_timeout(dev->queue,
30 (dev->int_cond && (dev->int_type == command
31 || dev->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
32 msecs_to_jiffies(MFC_INT_TIMEOUT));
33 if (ret == 0) {
34 mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
35 dev->int_type, command);
36 return 1;
37 } else if (ret == -ERESTARTSYS) {
38 mfc_err("Interrupted by a signal\n");
39 return 1;
40 }
41 mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
42 dev->int_type, command);
43 if (dev->int_type == S5P_FIMV_R2H_CMD_ERR_RET)
44 return 1;
45 return 0;
46 }
47
s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev * dev)48 void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
49 {
50 dev->int_cond = 0;
51 dev->int_type = 0;
52 dev->int_err = 0;
53 }
54
s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx * ctx,int command,int interrupt)55 int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
56 int command, int interrupt)
57 {
58 int ret;
59
60 if (interrupt) {
61 ret = wait_event_interruptible_timeout(ctx->queue,
62 (ctx->int_cond && (ctx->int_type == command
63 || ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
64 msecs_to_jiffies(MFC_INT_TIMEOUT));
65 } else {
66 ret = wait_event_timeout(ctx->queue,
67 (ctx->int_cond && (ctx->int_type == command
68 || ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
69 msecs_to_jiffies(MFC_INT_TIMEOUT));
70 }
71 if (ret == 0) {
72 mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
73 ctx->int_type, command);
74 return 1;
75 } else if (ret == -ERESTARTSYS) {
76 mfc_err("Interrupted by a signal\n");
77 return 1;
78 }
79 mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
80 ctx->int_type, command);
81 if (ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)
82 return 1;
83 return 0;
84 }
85
s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx * ctx)86 void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
87 {
88 ctx->int_cond = 0;
89 ctx->int_type = 0;
90 ctx->int_err = 0;
91 }
92
93