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
25int 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
48void 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
55int 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
86void 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