| /* |
| * |
| * (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/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/delay.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 }; |
| |
| 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 (atomic_read(&dev->empress_users)) |
| goto done_up; |
| |
| /* Unmute audio */ |
| saa_writeb(SAA7134_AUDIO_MUTE_CTRL, |
| saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6)); |
| |
| atomic_inc(&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)); |
| |
| atomic_dec(&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_vid_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_vid_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_vid_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 saa7134_i2c_call_saa6752(struct saa7134_dev *dev, |
| unsigned int cmd, void *arg) |
| { |
| if (dev->mpeg_i2c_client == NULL) |
| return -EINVAL; |
| return dev->mpeg_i2c_client->driver->command(dev->mpeg_i2c_client, |
| cmd, arg); |
| } |
| |
| static int empress_s_ext_ctrls(struct file *file, void *priv, |
| struct v4l2_ext_controls *ctrls) |
| { |
| struct saa7134_dev *dev = file->private_data; |
| int err; |
| |
| /* 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; |
| |
| err = saa7134_i2c_call_saa6752(dev, VIDIOC_S_EXT_CTRLS, ctrls); |
| ts_init_encoder(dev); |
| |
| return err; |
| } |
| |
| 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; |
| return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls); |
| } |
| |
| static int empress_g_ctrl(struct file *file, void *priv, |
| struct v4l2_control *c) |
| { |
| struct saa7134_dev *dev = file->private_data; |
| |
| return saa7134_g_ctrl_internal(dev, NULL, c); |
| } |
| |
| static int empress_s_ctrl(struct file *file, void *priv, |
| struct v4l2_control *c) |
| { |
| struct saa7134_dev *dev = file->private_data; |
| |
| return saa7134_s_ctrl_internal(dev, NULL, c); |
| } |
| |
| static int empress_queryctrl(struct file *file, void *priv, |
| struct v4l2_queryctrl *c) |
| { |
| static const u32 user_ctrls[] = { |
| V4L2_CID_USER_CLASS, |
| V4L2_CID_BRIGHTNESS, |
| V4L2_CID_CONTRAST, |
| V4L2_CID_SATURATION, |
| V4L2_CID_HUE, |
| V4L2_CID_AUDIO_VOLUME, |
| V4L2_CID_AUDIO_MUTE, |
| V4L2_CID_HFLIP, |
| 0 |
| }; |
| |
| static const u32 mpeg_ctrls[] = { |
| V4L2_CID_MPEG_CLASS, |
| V4L2_CID_MPEG_STREAM_TYPE, |
| V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, |
| V4L2_CID_MPEG_AUDIO_ENCODING, |
| V4L2_CID_MPEG_AUDIO_L2_BITRATE, |
| V4L2_CID_MPEG_VIDEO_ENCODING, |
| V4L2_CID_MPEG_VIDEO_ASPECT, |
| V4L2_CID_MPEG_VIDEO_BITRATE_MODE, |
| V4L2_CID_MPEG_VIDEO_BITRATE, |
| V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, |
| 0 |
| }; |
| static const u32 *ctrl_classes[] = { |
| user_ctrls, |
| mpeg_ctrls, |
| NULL |
| }; |
| struct saa7134_dev *dev = file->private_data; |
| |
| c->id = v4l2_ctrl_next(ctrl_classes, c->id); |
| if (c->id == 0) |
| return -EINVAL; |
| if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS) |
| return v4l2_ctrl_query_fill_std(c); |
| if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG) |
| return saa7134_queryctrl(file, priv, c); |
| return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYCTRL, c); |
| } |
| |
| static int empress_querymenu(struct file *file, void *priv, |
| struct v4l2_querymenu *c) |
| { |
| struct saa7134_dev *dev = file->private_data; |
| |
| if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG) |
| return -EINVAL; |
| return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c); |
| } |
| |
| 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 const struct v4l2_ioctl_ops ts_ioctl_ops = { |
| .vidioc_querycap = empress_querycap, |
| .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap, |
| .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap, |
| .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_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 = empress_queryctrl, |
| .vidioc_querymenu = empress_querymenu, |
| .vidioc_g_ctrl = empress_g_ctrl, |
| .vidioc_s_ctrl = empress_s_ctrl, |
| }; |
| |
| /* ----------------------------------------------------------- */ |
| |
| static struct video_device saa7134_empress_template = { |
| .name = "saa7134-empress", |
| .fops = &ts_fops, |
| .minor = -1, |
| .ioctl_ops = &ts_ioctl_ops, |
| |
| .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 (atomic_read(&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->parent = &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: |
| */ |