3 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <linux/init.h>
21 #include <linux/list.h>
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/slab.h>
25 #include <linux/delay.h>
27 #include "saa7134-reg.h"
30 #include <media/saa6752hs.h>
31 #include <media/v4l2-common.h>
33 /* ------------------------------------------------------------------ */
35 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
36 MODULE_LICENSE("GPL");
38 static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
40 module_param_array(empress_nr, int, NULL, 0444);
41 MODULE_PARM_DESC(empress_nr,"ts device number");
43 static unsigned int debug = 0;
44 module_param(debug, int, 0644);
45 MODULE_PARM_DESC(debug,"enable debug messages");
47 #define dprintk(fmt, arg...) if (debug) \
48 printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
50 /* ------------------------------------------------------------------ */
52 static void ts_reset_encoder(struct saa7134_dev* dev)
54 if (!dev->empress_started)
57 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
59 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
61 dev->empress_started = 0;
64 static int ts_init_encoder(struct saa7134_dev* dev)
66 struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
68 ts_reset_encoder(dev);
69 saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
70 dev->empress_started = 1;
74 /* ------------------------------------------------------------------ */
76 static int ts_open(struct inode *inode, struct file *file)
78 int minor = iminor(inode);
79 struct saa7134_dev *dev;
82 list_for_each_entry(dev, &saa7134_devlist, devlist)
83 if (dev->empress_dev && dev->empress_dev->minor == minor)
88 dprintk("open minor=%d\n",minor);
90 if (!mutex_trylock(&dev->empress_tsq.lock))
92 if (dev->empress_users)
96 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
97 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
100 file->private_data = dev;
104 mutex_unlock(&dev->empress_tsq.lock);
109 static int ts_release(struct inode *inode, struct file *file)
111 struct saa7134_dev *dev = file->private_data;
113 mutex_lock(&dev->empress_tsq.lock);
114 videobuf_stop(&dev->empress_tsq);
115 videobuf_mmap_free(&dev->empress_tsq);
116 dev->empress_users--;
118 /* stop the encoder */
119 ts_reset_encoder(dev);
122 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
123 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
125 mutex_unlock(&dev->empress_tsq.lock);
130 ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
132 struct saa7134_dev *dev = file->private_data;
134 if (!dev->empress_started)
135 ts_init_encoder(dev);
137 return videobuf_read_stream(&dev->empress_tsq,
138 data, count, ppos, 0,
139 file->f_flags & O_NONBLOCK);
143 ts_poll(struct file *file, struct poll_table_struct *wait)
145 struct saa7134_dev *dev = file->private_data;
147 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
152 ts_mmap(struct file *file, struct vm_area_struct * vma)
154 struct saa7134_dev *dev = file->private_data;
156 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
160 * This function is _not_ called directly, but from
161 * video_generic_ioctl (and maybe others). userspace
162 * copying is done already, arg is a kernel pointer.
165 static int empress_querycap(struct file *file, void *priv,
166 struct v4l2_capability *cap)
168 struct saa7134_fh *fh = priv;
169 struct saa7134_dev *dev = fh->dev;
171 strcpy(cap->driver, "saa7134");
172 strlcpy(cap->card, saa7134_boards[dev->board].name,
174 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
175 cap->version = SAA7134_VERSION_CODE;
177 V4L2_CAP_VIDEO_CAPTURE |
183 static int empress_enum_input(struct file *file, void *priv,
184 struct v4l2_input *i)
189 i->type = V4L2_INPUT_TYPE_CAMERA;
190 strcpy(i->name, "CCIR656");
195 static int empress_g_input(struct file *file, void *priv, unsigned int *i)
201 static int empress_s_input(struct file *file, void *priv, unsigned int i)
209 static int empress_enum_fmt_cap(struct file *file, void *priv,
210 struct v4l2_fmtdesc *f)
215 strlcpy(f->description, "MPEG TS", sizeof(f->description));
216 f->pixelformat = V4L2_PIX_FMT_MPEG;
221 static int empress_g_fmt_cap(struct file *file, void *priv,
222 struct v4l2_format *f)
224 struct saa7134_fh *fh = priv;
225 struct saa7134_dev *dev = fh->dev;
227 saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
229 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
230 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
235 static int empress_s_fmt_cap(struct file *file, void *priv,
236 struct v4l2_format *f)
238 struct saa7134_fh *fh = priv;
239 struct saa7134_dev *dev = fh->dev;
241 saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
243 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
244 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
250 static int empress_reqbufs(struct file *file, void *priv,
251 struct v4l2_requestbuffers *p)
253 struct saa7134_fh *fh = priv;
254 struct saa7134_dev *dev = fh->dev;
256 return videobuf_reqbufs(&dev->empress_tsq, p);
259 static int empress_querybuf(struct file *file, void *priv,
260 struct v4l2_buffer *b)
262 struct saa7134_fh *fh = priv;
263 struct saa7134_dev *dev = fh->dev;
265 return videobuf_querybuf(&dev->empress_tsq, b);
268 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
270 struct saa7134_fh *fh = priv;
271 struct saa7134_dev *dev = fh->dev;
273 return videobuf_qbuf(&dev->empress_tsq, b);
276 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
278 struct saa7134_fh *fh = priv;
279 struct saa7134_dev *dev = fh->dev;
281 return videobuf_dqbuf(&dev->empress_tsq, b,
282 file->f_flags & O_NONBLOCK);
285 static int empress_streamon(struct file *file, void *priv,
286 enum v4l2_buf_type type)
288 struct saa7134_fh *fh = priv;
289 struct saa7134_dev *dev = fh->dev;
291 return videobuf_streamon(&dev->empress_tsq);
294 static int empress_streamoff(struct file *file, void *priv,
295 enum v4l2_buf_type type)
297 struct saa7134_fh *fh = priv;
298 struct saa7134_dev *dev = fh->dev;
300 return videobuf_streamoff(&dev->empress_tsq);
303 static int empress_s_ext_ctrls(struct file *file, void *priv,
304 struct v4l2_ext_controls *ctrls)
306 struct saa7134_fh *fh = priv;
307 struct saa7134_dev *dev = fh->dev;
309 /* count == 0 is abused in saa6752hs.c, so that special
310 case is handled here explicitly. */
311 if (ctrls->count == 0)
314 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
317 saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, ctrls);
318 ts_init_encoder(dev);
323 static int empress_g_ext_ctrls(struct file *file, void *priv,
324 struct v4l2_ext_controls *ctrls)
326 struct saa7134_fh *fh = priv;
327 struct saa7134_dev *dev = fh->dev;
329 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
331 saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, ctrls);
336 static const struct file_operations ts_fops =
338 .owner = THIS_MODULE,
340 .release = ts_release,
344 .ioctl = video_ioctl2,
348 /* ----------------------------------------------------------- */
350 static struct video_device saa7134_empress_template =
352 .name = "saa7134-empress",
353 .type = 0 /* FIXME */,
354 .type2 = 0 /* FIXME */,
358 .vidioc_querycap = empress_querycap,
359 .vidioc_enum_fmt_cap = empress_enum_fmt_cap,
360 .vidioc_s_fmt_cap = empress_s_fmt_cap,
361 .vidioc_g_fmt_cap = empress_g_fmt_cap,
362 .vidioc_reqbufs = empress_reqbufs,
363 .vidioc_querybuf = empress_querybuf,
364 .vidioc_qbuf = empress_qbuf,
365 .vidioc_dqbuf = empress_dqbuf,
366 .vidioc_streamon = empress_streamon,
367 .vidioc_streamoff = empress_streamoff,
368 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
369 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
370 .vidioc_enum_input = empress_enum_input,
371 .vidioc_g_input = empress_g_input,
372 .vidioc_s_input = empress_s_input,
374 .vidioc_queryctrl = saa7134_queryctrl,
375 .vidioc_g_ctrl = saa7134_g_ctrl,
376 .vidioc_s_ctrl = saa7134_s_ctrl,
378 .tvnorms = SAA7134_NORMS,
379 .current_norm = V4L2_STD_PAL,
382 static void empress_signal_update(struct work_struct *work)
384 struct saa7134_dev* dev =
385 container_of(work, struct saa7134_dev, empress_workqueue);
388 dprintk("no video signal\n");
389 ts_reset_encoder(dev);
391 dprintk("video signal acquired\n");
392 if (dev->empress_users)
393 ts_init_encoder(dev);
397 static void empress_signal_change(struct saa7134_dev *dev)
399 schedule_work(&dev->empress_workqueue);
403 static int empress_init(struct saa7134_dev *dev)
407 dprintk("%s: %s\n",dev->name,__FUNCTION__);
408 dev->empress_dev = video_device_alloc();
409 if (NULL == dev->empress_dev)
411 *(dev->empress_dev) = saa7134_empress_template;
412 dev->empress_dev->dev = &dev->pci->dev;
413 dev->empress_dev->release = video_device_release;
414 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
415 "%s empress (%s)", dev->name,
416 saa7134_boards[dev->board].name);
418 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
420 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
421 empress_nr[dev->nr]);
423 printk(KERN_INFO "%s: can't register video device\n",
425 video_device_release(dev->empress_dev);
426 dev->empress_dev = NULL;
429 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
430 dev->name,dev->empress_dev->minor & 0x1f);
432 videobuf_queue_pci_init(&dev->empress_tsq, &saa7134_ts_qops,
433 dev->pci, &dev->slock,
434 V4L2_BUF_TYPE_VIDEO_CAPTURE,
435 V4L2_FIELD_ALTERNATE,
436 sizeof(struct saa7134_buf),
439 empress_signal_update(&dev->empress_workqueue);
443 static int empress_fini(struct saa7134_dev *dev)
445 dprintk("%s: %s\n",dev->name,__FUNCTION__);
447 if (NULL == dev->empress_dev)
449 flush_scheduled_work();
450 video_unregister_device(dev->empress_dev);
451 dev->empress_dev = NULL;
455 static struct saa7134_mpeg_ops empress_ops = {
456 .type = SAA7134_MPEG_EMPRESS,
457 .init = empress_init,
458 .fini = empress_fini,
459 .signal_change = empress_signal_change,
462 static int __init empress_register(void)
464 return saa7134_ts_register(&empress_ops);
467 static void __exit empress_unregister(void)
469 saa7134_ts_unregister(&empress_ops);
472 module_init(empress_register);
473 module_exit(empress_unregister);
475 /* ----------------------------------------------------------- */