/* * * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] * *  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. * *  This program is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with this program; if not, write to the Free Software *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */#include <linux/init.h>#include <linux/list.h>#include <linux/module.h>#include <linux/moduleparam.h>#include <linux/kernel.h>#include <linux/slab.h>#include <linux/delay.h>#include "compat.h"#include "saa7134-reg.h"#include "saa7134.h"#include <media/saa6752hs.h>#include <media/v4l2-common.h>/* ------------------------------------------------------------------ */MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");MODULE_LICENSE("GPL");static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)MODULE_PARM(empress_nr,"1-" __stringify(SAA7134_MAXBOARDS) "i");#else#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)static int dummy;module_param_array(empress_nr, int, dummy, 0444);#elsemodule_param_array(empress_nr, int, NULL, 0444);#endif#endifMODULE_PARM_DESC(empress_nr,"ts device number");static unsigned int debug = 0;module_param(debug, int, 0644);MODULE_PARM_DESC(debug,"enable debug messages");#define dprintk(fmt, arg...)	if (debug)			\	printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)/* ------------------------------------------------------------------ */static void ts_reset_encoder(struct saa7134_dev* dev){	if (!dev->empress_started)		return;	saa_writeb(SAA7134_SPECIAL_MODE, 0x00);	msleep(10);	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);	msleep(100);	dev->empress_started = 0;}static int ts_init_encoder(struct saa7134_dev* dev){	ts_reset_encoder(dev);	saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);	dev->empress_started = 1;	return 0;}/* ------------------------------------------------------------------ */static int ts_open(struct inode *inode, struct file *file){	int minor = iminor(inode);	struct saa7134_dev *h,*dev = NULL;	struct list_head *list;	int err;	list_for_each(list,&saa7134_devlist) {		h = list_entry(list, struct saa7134_dev, devlist);		if (h->empress_dev && h->empress_dev->minor == minor)			dev = h;	}	if (NULL == dev)		return -ENODEV;	dprintk("open minor=%d\n",minor);	err = -EBUSY;	if (!mutex_trylock(&dev->empress_tsq.lock))		goto done;	if (dev->empress_users)		goto done_up;	dev->empress_users++;	file->private_data = dev;	err = 0;done_up:	mutex_unlock(&dev->empress_tsq.lock);done:	return err;}static int ts_release(struct inode *inode, struct file *file){	struct saa7134_dev *dev = file->private_data;	if (dev->empress_tsq.streaming)		videobuf_streamoff(&dev->empress_tsq);	mutex_lock(&dev->empress_tsq.lock);	if (dev->empress_tsq.reading)		videobuf_read_stop(&dev->empress_tsq);	videobuf_mmap_free(&dev->empress_tsq);	dev->empress_users--;	/* stop the encoder */	ts_reset_encoder(dev);	mutex_unlock(&dev->empress_tsq.lock);	return 0;}static ssize_tts_read(struct file *file, char __user *data, size_t count, loff_t *ppos){	struct saa7134_dev *dev = file->private_data;	if (!dev->empress_started)		ts_init_encoder(dev);	return videobuf_read_stream(&dev->empress_tsq,				    data, count, ppos, 0,				    file->f_flags & O_NONBLOCK);}static unsigned intts_poll(struct file *file, struct poll_table_struct *wait){	struct saa7134_dev *dev = file->private_data;	return videobuf_poll_stream(file, &dev->empress_tsq, wait);}static intts_mmap(struct file *file, struct vm_area_struct * vma){	struct saa7134_dev *dev = file->private_data;	return videobuf_mmap_mapper(&dev->empress_tsq, vma);}/* * This function is _not_ called directly, but from * video_generic_ioctl (and maybe others).  userspace * copying is done already, arg is a kernel pointer. */static int ts_do_ioctl(struct inode *inode, struct file *file,		       unsigned int cmd, void *arg){	struct saa7134_dev *dev = file->private_data;	if (debug > 1)		v4l_print_ioctl(dev->name,cmd);	switch (cmd) {	case VIDIOC_QUERYCAP:	{		struct v4l2_capability *cap = arg;		memset(cap,0,sizeof(*cap));		strcpy(cap->driver, "saa7134");		strlcpy(cap->card, saa7134_boards[dev->board].name,			sizeof(cap->card));		sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));		cap->version = SAA7134_VERSION_CODE;		cap->capabilities =			V4L2_CAP_VIDEO_CAPTURE |			V4L2_CAP_READWRITE |			V4L2_CAP_STREAMING;		return 0;	}	/* --- input switching --------------------------------------- */	case VIDIOC_ENUMINPUT:	{		struct v4l2_input *i = arg;		if (i->index != 0)			return -EINVAL;		i->type = V4L2_INPUT_TYPE_CAMERA;		strcpy(i->name,"CCIR656");		return 0;	}	case VIDIOC_G_INPUT:	{		int *i = arg;		*i = 0;		return 0;	}	case VIDIOC_S_INPUT:	{		int *i = arg;		if (*i != 0)			return -EINVAL;		return 0;	}	/* --- capture ioctls ---------------------------------------- */	case VIDIOC_ENUM_FMT:	{		struct v4l2_fmtdesc *f = arg;		int index;		index = f->index;		if (index != 0)			return -EINVAL;		memset(f,0,sizeof(*f));		f->index = index;		strlcpy(f->description, "MPEG TS", sizeof(f->description));		f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;		f->pixelformat = V4L2_PIX_FMT_MPEG;		return 0;	}	case VIDIOC_G_FMT:	{		struct v4l2_format *f = arg;		memset(f,0,sizeof(*f));		f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;		saa7134_i2c_call_clients(dev, cmd, arg);		f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;		f->fmt.pix.sizeimage    = TS_PACKET_SIZE * dev->ts.nr_packets;		return 0;	}	case VIDIOC_S_FMT:	{		struct v4l2_format *f = arg;		if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)		    return -EINVAL;		saa7134_i2c_call_clients(dev, cmd, arg);		f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;		f->fmt.pix.sizeimage    = TS_PACKET_SIZE* dev->ts.nr_packets;		return 0;	}	case VIDIOC_REQBUFS:		return videobuf_reqbufs(&dev->empress_tsq,arg);	case VIDIOC_QUERYBUF:		return videobuf_querybuf(&dev->empress_tsq,arg);	case VIDIOC_QBUF:		return videobuf_qbuf(&dev->empress_tsq,arg);	case VIDIOC_DQBUF:		return videobuf_dqbuf(&dev->empress_tsq,arg,				      file->f_flags & O_NONBLOCK);	case VIDIOC_STREAMON:		return videobuf_streamon(&dev->empress_tsq);	case VIDIOC_STREAMOFF:		return videobuf_streamoff(&dev->empress_tsq);	case VIDIOC_QUERYCTRL:	case VIDIOC_G_CTRL:	case VIDIOC_S_CTRL:		return saa7134_common_ioctl(dev, cmd, arg);	case VIDIOC_S_MPEGCOMP:		saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);		ts_init_encoder(dev);		return 0;	case VIDIOC_G_MPEGCOMP:		saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);		return 0;	default:		return -ENOIOCTLCMD;	}	return 0;}static int ts_ioctl(struct inode *inode, struct file *file,		     unsigned int cmd, unsigned long arg){	return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);}static struct file_operations ts_fops ={	.owner	  = THIS_MODULE,	.open	  = ts_open,	.release  = ts_release,	.read	  = ts_read,	.poll	  = ts_poll,	.mmap	  = ts_mmap,	.ioctl	  = ts_ioctl,	.llseek   = no_llseek,};/* ----------------------------------------------------------- */static struct video_device saa7134_empress_template ={	.name          = "saa7134-empress",	.type          = 0 /* FIXME */,	.type2         = 0 /* FIXME */,	.hardware      = 0,	.fops          = &ts_fops,	.minor	       = -1,};static void empress_signal_update(void* data){	struct saa7134_dev* dev = (struct saa7134_dev*) data;	if (dev->nosignal) {		dprintk("no video signal\n");		ts_reset_encoder(dev);	} else {		dprintk("video signal acquired\n");		if (dev->empress_users)			ts_init_encoder(dev);	}}static void empress_signal_change(struct saa7134_dev *dev){	schedule_work(&dev->empress_workqueue);}static int empress_init(struct saa7134_dev *dev){	int err;	dprintk("%s: %s\n",dev->name,__FUNCTION__);	dev->empress_dev = video_device_alloc();	if (NULL == dev->empress_dev)		return -ENOMEM;	*(dev->empress_dev) = saa7134_empress_template;#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)	dev->empress_dev->dev     = &dev->pci->dev;	dev->empress_dev->release = video_device_release;#endif	snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),		 "%s empress (%s)", dev->name,		 saa7134_boards[dev->board].name);	INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);	err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,				    empress_nr[dev->nr]);	if (err < 0) {		printk(KERN_INFO "%s: can't register video device\n",		       dev->name);		video_device_release(dev->empress_dev);		dev->empress_dev = NULL;		return err;	}	printk(KERN_INFO "%s: registered device video%d [mpeg]\n",	       dev->name,dev->empress_dev->minor & 0x1f);	videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,			    dev->pci, &dev->slock,			    V4L2_BUF_TYPE_VIDEO_CAPTURE,			    V4L2_FIELD_ALTERNATE,			    sizeof(struct saa7134_buf),			    dev);	empress_signal_update(dev);	return 0;}static int empress_fini(struct saa7134_dev *dev){	dprintk("%s: %s\n",dev->name,__FUNCTION__);	if (NULL == dev->empress_dev)		return 0;	flush_scheduled_work();	video_unregister_device(dev->empress_dev);	dev->empress_dev = NULL;	return 0;}static struct saa7134_mpeg_ops empress_ops = {	.type          = SAA7134_MPEG_EMPRESS,	.init          = empress_init,	.fini          = empress_fini,	.signal_change = empress_signal_change,};static int __init empress_register(void){	return saa7134_ts_register(&empress_ops);}static void __exit empress_unregister(void){	saa7134_ts_unregister(&empress_ops);}module_init(empress_register);module_exit(empress_unregister);/* ----------------------------------------------------------- *//* * Local variables: * c-basic-offset: 8 * End: */