linux/drivers/media/video/s5p-mfc/s5p_mfc_intr.c
Kamil Debski af93574678 [media] MFC: Add MFC 5.1 V4L2 driver
Multi Format Codec 5.1 is a hardware video coding acceleration
module found in the S5PV210 and Exynos4 Samsung SoCs. It is
capable of handling a range of video codecs and this driver
provides a V4L2 interface for video decoding and encoding.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Jeongtae Park <jtp.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:56:00 -03:00

93 lines
2.4 KiB
C

/*
* drivers/media/video/samsung/mfc5/s5p_mfc_intr.c
*
* C file for Samsung MFC (Multi Function Codec - FIMV) driver
* This file contains functions used to wait for command completion.
*
* Kamil Debski, Copyright (C) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include "regs-mfc.h"
#include "s5p_mfc_common.h"
#include "s5p_mfc_debug.h"
#include "s5p_mfc_intr.h"
int s5p_mfc_wait_for_done_dev(struct s5p_mfc_dev *dev, int command)
{
int ret;
ret = wait_event_interruptible_timeout(dev->queue,
(dev->int_cond && (dev->int_type == command
|| dev->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
msecs_to_jiffies(MFC_INT_TIMEOUT));
if (ret == 0) {
mfc_err("Interrupt (dev->int_type:%d, command:%d) timed out\n",
dev->int_type, command);
return 1;
} else if (ret == -ERESTARTSYS) {
mfc_err("Interrupted by a signal\n");
return 1;
}
mfc_debug(1, "Finished waiting (dev->int_type:%d, command: %d)\n",
dev->int_type, command);
if (dev->int_type == S5P_FIMV_R2H_CMD_ERR_RET)
return 1;
return 0;
}
void s5p_mfc_clean_dev_int_flags(struct s5p_mfc_dev *dev)
{
dev->int_cond = 0;
dev->int_type = 0;
dev->int_err = 0;
}
int s5p_mfc_wait_for_done_ctx(struct s5p_mfc_ctx *ctx,
int command, int interrupt)
{
int ret;
if (interrupt) {
ret = wait_event_interruptible_timeout(ctx->queue,
(ctx->int_cond && (ctx->int_type == command
|| ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
msecs_to_jiffies(MFC_INT_TIMEOUT));
} else {
ret = wait_event_timeout(ctx->queue,
(ctx->int_cond && (ctx->int_type == command
|| ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)),
msecs_to_jiffies(MFC_INT_TIMEOUT));
}
if (ret == 0) {
mfc_err("Interrupt (ctx->int_type:%d, command:%d) timed out\n",
ctx->int_type, command);
return 1;
} else if (ret == -ERESTARTSYS) {
mfc_err("Interrupted by a signal\n");
return 1;
}
mfc_debug(1, "Finished waiting (ctx->int_type:%d, command: %d)\n",
ctx->int_type, command);
if (ctx->int_type == S5P_FIMV_R2H_CMD_ERR_RET)
return 1;
return 0;
}
void s5p_mfc_clean_ctx_int_flags(struct s5p_mfc_ctx *ctx)
{
ctx->int_cond = 0;
ctx->int_type = 0;
ctx->int_err = 0;
}