2005-04-16 22:20:36 +00:00
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/*
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*
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* (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include "saa7134-reg.h"
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#include "saa7134.h"
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#include <media/saa6752hs.h>
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/* ------------------------------------------------------------------ */
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MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
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MODULE_LICENSE("GPL");
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static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
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module_param_array(empress_nr, int, NULL, 0444);
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MODULE_PARM_DESC(empress_nr,"ts device number");
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static unsigned int debug = 0;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug,"enable debug messages");
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#define dprintk(fmt, arg...) if (debug) \
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printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
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/* ------------------------------------------------------------------ */
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static void ts_reset_encoder(struct saa7134_dev* dev)
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{
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if (!dev->empress_started)
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return;
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saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
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msleep(10);
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saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
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msleep(100);
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dev->empress_started = 0;
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}
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static int ts_init_encoder(struct saa7134_dev* dev)
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{
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ts_reset_encoder(dev);
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saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);
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dev->empress_started = 1;
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return 0;
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}
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/* ------------------------------------------------------------------ */
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static int ts_open(struct inode *inode, struct file *file)
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{
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int minor = iminor(inode);
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struct saa7134_dev *h,*dev = NULL;
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struct list_head *list;
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int err;
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list_for_each(list,&saa7134_devlist) {
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h = list_entry(list, struct saa7134_dev, devlist);
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if (h->empress_dev && h->empress_dev->minor == minor)
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dev = h;
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}
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if (NULL == dev)
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return -ENODEV;
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dprintk("open minor=%d\n",minor);
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err = -EBUSY;
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if (down_trylock(&dev->empress_tsq.lock))
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goto done;
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if (dev->empress_users)
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goto done_up;
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dev->empress_users++;
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file->private_data = dev;
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err = 0;
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done_up:
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up(&dev->empress_tsq.lock);
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done:
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return err;
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}
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static int ts_release(struct inode *inode, struct file *file)
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{
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struct saa7134_dev *dev = file->private_data;
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if (dev->empress_tsq.streaming)
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videobuf_streamoff(&dev->empress_tsq);
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down(&dev->empress_tsq.lock);
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if (dev->empress_tsq.reading)
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videobuf_read_stop(&dev->empress_tsq);
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videobuf_mmap_free(&dev->empress_tsq);
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dev->empress_users--;
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/* stop the encoder */
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ts_reset_encoder(dev);
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up(&dev->empress_tsq.lock);
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return 0;
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}
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static ssize_t
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ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
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{
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struct saa7134_dev *dev = file->private_data;
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if (!dev->empress_started)
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ts_init_encoder(dev);
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return videobuf_read_stream(&dev->empress_tsq,
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data, count, ppos, 0,
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file->f_flags & O_NONBLOCK);
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}
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static unsigned int
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ts_poll(struct file *file, struct poll_table_struct *wait)
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{
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struct saa7134_dev *dev = file->private_data;
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return videobuf_poll_stream(file, &dev->empress_tsq, wait);
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}
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static int
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ts_mmap(struct file *file, struct vm_area_struct * vma)
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{
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struct saa7134_dev *dev = file->private_data;
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return videobuf_mmap_mapper(&dev->empress_tsq, vma);
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}
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/*
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* This function is _not_ called directly, but from
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* video_generic_ioctl (and maybe others). userspace
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* copying is done already, arg is a kernel pointer.
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*/
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static int ts_do_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg)
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{
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struct saa7134_dev *dev = file->private_data;
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if (debug > 1)
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saa7134_print_ioctl(dev->name,cmd);
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switch (cmd) {
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case VIDIOC_QUERYCAP:
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{
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struct v4l2_capability *cap = arg;
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memset(cap,0,sizeof(*cap));
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strcpy(cap->driver, "saa7134");
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strlcpy(cap->card, saa7134_boards[dev->board].name,
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sizeof(cap->card));
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sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
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cap->version = SAA7134_VERSION_CODE;
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cap->capabilities =
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V4L2_CAP_VIDEO_CAPTURE |
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V4L2_CAP_READWRITE |
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V4L2_CAP_STREAMING;
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return 0;
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}
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/* --- input switching --------------------------------------- */
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case VIDIOC_ENUMINPUT:
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{
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struct v4l2_input *i = arg;
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if (i->index != 0)
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return -EINVAL;
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i->type = V4L2_INPUT_TYPE_CAMERA;
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strcpy(i->name,"CCIR656");
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return 0;
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}
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case VIDIOC_G_INPUT:
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{
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int *i = arg;
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*i = 0;
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return 0;
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}
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case VIDIOC_S_INPUT:
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{
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int *i = arg;
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if (*i != 0)
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return -EINVAL;
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return 0;
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}
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/* --- capture ioctls ---------------------------------------- */
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case VIDIOC_ENUM_FMT:
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{
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struct v4l2_fmtdesc *f = arg;
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int index;
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index = f->index;
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if (index != 0)
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return -EINVAL;
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memset(f,0,sizeof(*f));
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f->index = index;
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strlcpy(f->description, "MPEG TS", sizeof(f->description));
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f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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f->pixelformat = V4L2_PIX_FMT_MPEG;
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return 0;
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}
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case VIDIOC_G_FMT:
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{
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struct v4l2_format *f = arg;
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memset(f,0,sizeof(*f));
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f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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2005-05-05 23:15:52 +00:00
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saa7134_i2c_call_clients(dev, cmd, arg);
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2005-04-16 22:20:36 +00:00
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f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
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f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
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return 0;
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}
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case VIDIOC_S_FMT:
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{
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struct v4l2_format *f = arg;
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if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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2005-05-05 23:15:52 +00:00
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saa7134_i2c_call_clients(dev, cmd, arg);
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2005-04-16 22:20:36 +00:00
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f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
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f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets;
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return 0;
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}
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case VIDIOC_REQBUFS:
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return videobuf_reqbufs(&dev->empress_tsq,arg);
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case VIDIOC_QUERYBUF:
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return videobuf_querybuf(&dev->empress_tsq,arg);
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case VIDIOC_QBUF:
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return videobuf_qbuf(&dev->empress_tsq,arg);
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case VIDIOC_DQBUF:
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return videobuf_dqbuf(&dev->empress_tsq,arg,
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file->f_flags & O_NONBLOCK);
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case VIDIOC_STREAMON:
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return videobuf_streamon(&dev->empress_tsq);
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case VIDIOC_STREAMOFF:
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return videobuf_streamoff(&dev->empress_tsq);
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case VIDIOC_QUERYCTRL:
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case VIDIOC_G_CTRL:
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case VIDIOC_S_CTRL:
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return saa7134_common_ioctl(dev, cmd, arg);
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case VIDIOC_S_MPEGCOMP:
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saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg);
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ts_init_encoder(dev);
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return 0;
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case VIDIOC_G_MPEGCOMP:
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saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
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return 0;
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default:
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return -ENOIOCTLCMD;
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}
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return 0;
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}
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static int ts_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
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}
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static struct file_operations ts_fops =
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{
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.owner = THIS_MODULE,
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.open = ts_open,
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.release = ts_release,
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.read = ts_read,
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.poll = ts_poll,
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.mmap = ts_mmap,
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.ioctl = ts_ioctl,
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.llseek = no_llseek,
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};
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/* ----------------------------------------------------------- */
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static struct video_device saa7134_empress_template =
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{
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.name = "saa7134-empress",
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.type = 0 /* FIXME */,
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.type2 = 0 /* FIXME */,
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.hardware = 0,
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.fops = &ts_fops,
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.minor = -1,
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};
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static void empress_signal_update(void* data)
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{
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struct saa7134_dev* dev = (struct saa7134_dev*) data;
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if (dev->nosignal) {
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dprintk("no video signal\n");
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ts_reset_encoder(dev);
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} else {
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dprintk("video signal acquired\n");
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if (dev->empress_users)
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ts_init_encoder(dev);
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}
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}
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static void empress_signal_change(struct saa7134_dev *dev)
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{
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schedule_work(&dev->empress_workqueue);
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}
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static int empress_init(struct saa7134_dev *dev)
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{
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int err;
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dprintk("%s: %s\n",dev->name,__FUNCTION__);
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dev->empress_dev = video_device_alloc();
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if (NULL == dev->empress_dev)
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return -ENOMEM;
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*(dev->empress_dev) = saa7134_empress_template;
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dev->empress_dev->dev = &dev->pci->dev;
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dev->empress_dev->release = video_device_release;
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snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
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"%s empress (%s)", dev->name,
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saa7134_boards[dev->board].name);
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INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev);
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err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
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empress_nr[dev->nr]);
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if (err < 0) {
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printk(KERN_INFO "%s: can't register video device\n",
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dev->name);
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video_device_release(dev->empress_dev);
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dev->empress_dev = NULL;
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return err;
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}
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printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
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dev->name,dev->empress_dev->minor & 0x1f);
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videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops,
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dev->pci, &dev->slock,
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V4L2_BUF_TYPE_VIDEO_CAPTURE,
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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:
|
|
|
|
*/
|