1*43ecec16SMauro Carvalho Chehab // SPDX-License-Identifier: GPL-2.0-only
2*43ecec16SMauro Carvalho Chehab /*
3*43ecec16SMauro Carvalho Chehab * drivers/media/platform/samsung/mfc5/s5p_mfc_intr.c
4*43ecec16SMauro Carvalho Chehab *
5*43ecec16SMauro Carvalho Chehab * C file for Samsung MFC (Multi Function Codec - FIMV) driver
6*43ecec16SMauro Carvalho Chehab * This file contains functions used to wait for command completion.
7*43ecec16SMauro Carvalho Chehab *
8*43ecec16SMauro Carvalho Chehab * Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
9*43ecec16SMauro Carvalho Chehab * http://www.samsung.com/
10*43ecec16SMauro Carvalho Chehab */
11*43ecec16SMauro Carvalho Chehab
12*43ecec16SMauro Carvalho Chehab #include <linux/delay.h>
13*43ecec16SMauro Carvalho Chehab #include <linux/errno.h>
14*43ecec16SMauro Carvalho Chehab #include <linux/io.h>
15*43ecec16SMauro Carvalho Chehab #include <linux/sched.h>
16*43ecec16SMauro Carvalho Chehab #include <linux/wait.h>
17*43ecec16SMauro Carvalho Chehab #include "s5p_mfc_common.h"
18*43ecec16SMauro Carvalho Chehab #include "s5p_mfc_debug.h"
19*43ecec16SMauro Carvalho Chehab #include "s5p_mfc_intr.h"
20*43ecec16SMauro Carvalho Chehab
s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev * dev,int command)21*43ecec16SMauro Carvalho Chehab int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
22*43ecec16SMauro Carvalho Chehab {
23*43ecec16SMauro Carvalho Chehab int ret;
24*43ecec16SMauro Carvalho Chehab
25*43ecec16SMauro Carvalho Chehab ret = wait_event_interruptible_timeout(dev->queue,
26*43ecec16SMauro Carvalho Chehab (dev->int_cond && (dev->int_type == command
27*43ecec16SMauro Carvalho Chehab || dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
28*43ecec16SMauro Carvalho Chehab msecs_to_jiffies(MFC_INT_TIMEOUT));
29*43ecec16SMauro Carvalho Chehab if (ret == 0) {
30*43ecec16SMauro Carvalho Chehab mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
31*43ecec16SMauro Carvalho Chehab dev->int_type, command);
32*43ecec16SMauro Carvalho Chehab return 1;
33*43ecec16SMauro Carvalho Chehab } else if (ret == -ERESTARTSYS) {
34*43ecec16SMauro Carvalho Chehab mfc_err("Interrupted by a signal\n");
35*43ecec16SMauro Carvalho Chehab return 1;
36*43ecec16SMauro Carvalho Chehab }
37*43ecec16SMauro Carvalho Chehab mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
38*43ecec16SMauro Carvalho Chehab dev->int_type, command);
39*43ecec16SMauro Carvalho Chehab if (dev->int_type == S5P_MFC_R2H_CMD_ERR_RET)
40*43ecec16SMauro Carvalho Chehab return 1;
41*43ecec16SMauro Carvalho Chehab return 0;
42*43ecec16SMauro Carvalho Chehab }
43*43ecec16SMauro Carvalho Chehab
s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev * dev)44*43ecec16SMauro Carvalho Chehab void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
45*43ecec16SMauro Carvalho Chehab {
46*43ecec16SMauro Carvalho Chehab dev->int_cond = 0;
47*43ecec16SMauro Carvalho Chehab dev->int_type = 0;
48*43ecec16SMauro Carvalho Chehab dev->int_err = 0;
49*43ecec16SMauro Carvalho Chehab }
50*43ecec16SMauro Carvalho Chehab
s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx * ctx,int command,int interrupt)51*43ecec16SMauro Carvalho Chehab int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
52*43ecec16SMauro Carvalho Chehab int command, int interrupt)
53*43ecec16SMauro Carvalho Chehab {
54*43ecec16SMauro Carvalho Chehab int ret;
55*43ecec16SMauro Carvalho Chehab
56*43ecec16SMauro Carvalho Chehab if (interrupt) {
57*43ecec16SMauro Carvalho Chehab ret = wait_event_interruptible_timeout(ctx->queue,
58*43ecec16SMauro Carvalho Chehab (ctx->int_cond && (ctx->int_type == command
59*43ecec16SMauro Carvalho Chehab || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
60*43ecec16SMauro Carvalho Chehab msecs_to_jiffies(MFC_INT_TIMEOUT));
61*43ecec16SMauro Carvalho Chehab } else {
62*43ecec16SMauro Carvalho Chehab ret = wait_event_timeout(ctx->queue,
63*43ecec16SMauro Carvalho Chehab (ctx->int_cond && (ctx->int_type == command
64*43ecec16SMauro Carvalho Chehab || ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)),
65*43ecec16SMauro Carvalho Chehab msecs_to_jiffies(MFC_INT_TIMEOUT));
66*43ecec16SMauro Carvalho Chehab }
67*43ecec16SMauro Carvalho Chehab if (ret == 0) {
68*43ecec16SMauro Carvalho Chehab mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
69*43ecec16SMauro Carvalho Chehab ctx->int_type, command);
70*43ecec16SMauro Carvalho Chehab return 1;
71*43ecec16SMauro Carvalho Chehab } else if (ret == -ERESTARTSYS) {
72*43ecec16SMauro Carvalho Chehab mfc_err("Interrupted by a signal\n");
73*43ecec16SMauro Carvalho Chehab return 1;
74*43ecec16SMauro Carvalho Chehab }
75*43ecec16SMauro Carvalho Chehab mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
76*43ecec16SMauro Carvalho Chehab ctx->int_type, command);
77*43ecec16SMauro Carvalho Chehab if (ctx->int_type == S5P_MFC_R2H_CMD_ERR_RET)
78*43ecec16SMauro Carvalho Chehab return 1;
79*43ecec16SMauro Carvalho Chehab return 0;
80*43ecec16SMauro Carvalho Chehab }
81*43ecec16SMauro Carvalho Chehab
s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx * ctx)82*43ecec16SMauro Carvalho Chehab void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
83*43ecec16SMauro Carvalho Chehab {
84*43ecec16SMauro Carvalho Chehab ctx->int_cond = 0;
85*43ecec16SMauro Carvalho Chehab ctx->int_type = 0;
86*43ecec16SMauro Carvalho Chehab ctx->int_err = 0;
87*43ecec16SMauro Carvalho Chehab }
88*43ecec16SMauro Carvalho Chehab
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