/* * * (c) 2004 Gerd Knorr [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 #include #include #include #include #include #include "saa7134-reg.h" #include "saa7134.h" #include #include /* ------------------------------------------------------------------ */ MODULE_AUTHOR("Gerd Knorr [SuSE Labs]"); MODULE_LICENSE("GPL"); static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET }; module_param_array(empress_nr, int, NULL, 0444); MODULE_PARM_DESC(empress_nr,"ts device number"); static unsigned int debug; 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) { struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 }; ts_reset_encoder(dev); saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls); dev->empress_started = 1; return 0; } /* ------------------------------------------------------------------ */ static int ts_open(struct inode *inode, struct file *file) { int minor = iminor(inode); struct saa7134_dev *dev; int err; list_for_each_entry(dev, &saa7134_devlist, devlist) if (dev->empress_dev && dev->empress_dev->minor == minor) goto found; return -ENODEV; found: dprintk("open minor=%d\n",minor); err = -EBUSY; if (!mutex_trylock(&dev->empress_tsq.vb_lock)) goto done; if (dev->empress_users) goto done_up; /* Unmute audio */ saa_writeb(SAA7134_AUDIO_MUTE_CTRL, saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6)); dev->empress_users++; file->private_data = dev; err = 0; done_up: mutex_unlock(&dev->empress_tsq.vb_lock); done: return err; } static int ts_release(struct inode *inode, struct file *file) { struct saa7134_dev *dev = file->private_data; videobuf_stop(&dev->empress_tsq); videobuf_mmap_free(&dev->empress_tsq); /* stop the encoder */ ts_reset_encoder(dev); /* Mute audio */ saa_writeb(SAA7134_AUDIO_MUTE_CTRL, saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6)); dev->empress_users--; return 0; } static ssize_t ts_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 int ts_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 int ts_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 empress_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct saa7134_dev *dev = file->private_data; 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; } static int empress_enum_input(struct file *file, void *priv, struct v4l2_input *i) { if (i->index != 0) return -EINVAL; i->type = V4L2_INPUT_TYPE_CAMERA; strcpy(i->name, "CCIR656"); return 0; } static int empress_g_input(struct file *file, void *priv, unsigned int *i) { *i = 0; return 0; } static int empress_s_input(struct file *file, void *priv, unsigned int i) { if (i != 0) return -EINVAL; return 0; } static int empress_enum_fmt_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (f->index != 0) return -EINVAL; strlcpy(f->description, "MPEG TS", sizeof(f->description)); f->pixelformat = V4L2_PIX_FMT_MPEG; return 0; } static int empress_g_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) { struct saa7134_dev *dev = file->private_data; saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f); f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; return 0; } static int empress_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) { struct saa7134_dev *dev = file->private_data; saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f); f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; return 0; } static int empress_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *p) { struct saa7134_dev *dev = file->private_data; return videobuf_reqbufs(&dev->empress_tsq, p); } static int empress_querybuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct saa7134_dev *dev = file->private_data; return videobuf_querybuf(&dev->empress_tsq, b); } static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct saa7134_dev *dev = file->private_data; return videobuf_qbuf(&dev->empress_tsq, b); } static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) { struct saa7134_dev *dev = file->private_data; return videobuf_dqbuf(&dev->empress_tsq, b, file->f_flags & O_NONBLOCK); } static int empress_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct saa7134_dev *dev = file->private_data; return videobuf_streamon(&dev->empress_tsq); } static int empress_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct saa7134_dev *dev = file->private_data; return videobuf_streamoff(&dev->empress_tsq); } static int empress_s_ext_ctrls(struct file *file, void *priv, struct v4l2_ext_controls *ctrls) { struct saa7134_dev *dev = file->private_data; /* count == 0 is abused in saa6752hs.c, so that special case is handled here explicitly. */ if (ctrls->count == 0) return 0; if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) return -EINVAL; saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, ctrls); ts_init_encoder(dev); return 0; } static int empress_g_ext_ctrls(struct file *file, void *priv, struct v4l2_ext_controls *ctrls) { struct saa7134_dev *dev = file->private_data; if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) return -EINVAL; saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, ctrls); return 0; } static const struct file_operations ts_fops = { .owner = THIS_MODULE, .open = ts_open, .release = ts_release, .read = ts_read, .poll = ts_poll, .mmap = ts_mmap, .ioctl = video_ioctl2, .llseek = no_llseek, }; /* ----------------------------------------------------------- */ static struct video_device saa7134_empress_template = { .name = "saa7134-empress", .type = 0 /* FIXME */, .type2 = 0 /* FIXME */, .fops = &ts_fops, .minor = -1, .vidioc_querycap = empress_querycap, .vidioc_enum_fmt_cap = empress_enum_fmt_cap, .vidioc_s_fmt_cap = empress_s_fmt_cap, .vidioc_g_fmt_cap = empress_g_fmt_cap, .vidioc_reqbufs = empress_reqbufs, .vidioc_querybuf = empress_querybuf, .vidioc_qbuf = empress_qbuf, .vidioc_dqbuf = empress_dqbuf, .vidioc_streamon = empress_streamon, .vidioc_streamoff = empress_streamoff, .vidioc_s_ext_ctrls = empress_s_ext_ctrls, .vidioc_g_ext_ctrls = empress_g_ext_ctrls, .vidioc_enum_input = empress_enum_input, .vidioc_g_input = empress_g_input, .vidioc_s_input = empress_s_input, .vidioc_queryctrl = saa7134_queryctrl, .vidioc_g_ctrl = saa7134_g_ctrl, .vidioc_s_ctrl = saa7134_s_ctrl, .tvnorms = SAA7134_NORMS, .current_norm = V4L2_STD_PAL, }; static void empress_signal_update(struct work_struct *work) { struct saa7134_dev* dev = container_of(work, struct saa7134_dev, empress_workqueue); 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,__func__); dev->empress_dev = video_device_alloc(); if (NULL == dev->empress_dev) return -ENOMEM; *(dev->empress_dev) = saa7134_empress_template; dev->empress_dev->dev = &dev->pci->dev; dev->empress_dev->release = video_device_release; 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); 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_sg_init(&dev->empress_tsq, &saa7134_ts_qops, &dev->pci->dev, &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_ALTERNATE, sizeof(struct saa7134_buf), dev); empress_signal_update(&dev->empress_workqueue); return 0; } static int empress_fini(struct saa7134_dev *dev) { dprintk("%s: %s\n",dev->name,__func__); 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: */