/*
* Samsung S5P Multi Format Codec v 5.1
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Kamil Debski, <k.debski@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <linux/videodev2.h>
#include <linux/workqueue.h>
#include <media/videobuf2-core.h>
#include "regs-mfc.h"
#include "s5p_mfc_ctrl.h"
#include "s5p_mfc_debug.h"
#include "s5p_mfc_dec.h"
#include "s5p_mfc_enc.h"
#include "s5p_mfc_intr.h"
#include "s5p_mfc_opr.h"
#include "s5p_mfc_pm.h"
#include "s5p_mfc_shm.h"
#define S5P_MFC_NAME "s5p-mfc"
#define S5P_MFC_DEC_NAME "s5p-mfc-dec"
#define S5P_MFC_ENC_NAME "s5p-mfc-enc"
int debug;
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
/* Helper functions for interrupt processing */
/* Remove from hw execution round robin */
static void clear_work_bit(struct s5p_mfc_ctx *ctx)
{
struct s5p_mfc_dev *dev = ctx->dev;
spin_lock(&dev->condlock);
clear_bit(ctx->num, &dev->ctx_work_bits);
spin_unlock(&dev->condlock);
}
/* Wake up context wait_queue */
static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
unsigned int err)
{
ctx->int_cond = 1;
ctx->int_type = reason;
ctx->int_err = err;
wake_up(&ctx->queue);
}
/* Wake up device wait_queue */
static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
unsigned int err)
{
dev->int_cond = 1;
dev->int_type = reason;
dev->int_err = err;
wake_up(&dev->queue);
}
void s5p_mfc_watchdog(unsigned long arg)
{
struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;
if (test_bit(0, &dev->hw_lock))
atomic_inc(&dev->watchdog_cnt);
if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
/* This means that hw is busy and no interrupts were
* generated by hw for the Nth time of running this
* watchdog timer. This usually means a serious hw
* error. Now it is time to kill all instances and
* reset the MFC. */
mfc_err("Time out during waiting for HW\n");
queue_work(dev->watchdog_workqueue, &dev->watchdog_work);
}
dev->watchdog_timer.expires = jiffies +
msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
add_timer(&dev->watchdog_timer);
}
static void s5p_mfc_watchdog_worker