1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
3 #include <media/saa7146_vv.h>
4 #include <linux/module.h>
6 /****************************************************************************/
7 /* resource management functions, shamelessly stolen from saa7134 driver */
9 int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
11 struct saa7146_dev *dev = fh->dev;
12 struct saa7146_vv *vv = dev->vv_data;
14 if (fh->resources & bit) {
15 DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n",
17 /* have it already allocated */
22 if (vv->resources & bit) {
23 DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n",
25 /* no, someone else uses it */
28 /* it's free, grab it */
31 DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources);
35 void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
37 struct saa7146_dev *dev = fh->dev;
38 struct saa7146_vv *vv = dev->vv_data;
40 BUG_ON((fh->resources & bits) != bits);
42 fh->resources &= ~bits;
43 vv->resources &= ~bits;
44 DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources);
48 /********************************************************************************/
49 /* common dma functions */
51 void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
52 struct saa7146_buf *buf)
54 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
55 DEB_EE("dev:%p, buf:%p\n", dev, buf);
57 BUG_ON(in_interrupt());
59 videobuf_waiton(q, &buf->vb, 0, 0);
60 videobuf_dma_unmap(q->dev, dma);
61 videobuf_dma_free(dma);
62 buf->vb.state = VIDEOBUF_NEEDS_INIT;
66 /********************************************************************************/
67 /* common buffer functions */
69 int saa7146_buffer_queue(struct saa7146_dev *dev,
70 struct saa7146_dmaqueue *q,
71 struct saa7146_buf *buf)
73 assert_spin_locked(&dev->slock);
74 DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf);
78 if (NULL == q->curr) {
80 DEB_D("immediately activating buffer %p\n", buf);
81 buf->activate(dev,buf,NULL);
83 list_add_tail(&buf->vb.queue,&q->queue);
84 buf->vb.state = VIDEOBUF_QUEUED;
85 DEB_D("adding buffer %p to queue. (active buffer present)\n",
91 void saa7146_buffer_finish(struct saa7146_dev *dev,
92 struct saa7146_dmaqueue *q,
95 assert_spin_locked(&dev->slock);
96 DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
97 DEB_EE("q->curr:%p\n", q->curr);
101 /* finish current buffer */
102 if (NULL == q->curr) {
103 DEB_D("aiii. no current buffer\n");
107 q->curr->vb.state = state;
108 do_gettimeofday(&q->curr->vb.ts);
109 wake_up(&q->curr->vb.done);
114 void saa7146_buffer_next(struct saa7146_dev *dev,
115 struct saa7146_dmaqueue *q, int vbi)
117 struct saa7146_buf *buf,*next = NULL;
121 DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi);
123 assert_spin_locked(&dev->slock);
124 if (!list_empty(&q->queue)) {
125 /* activate next one from queue */
126 buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
127 list_del(&buf->vb.queue);
128 if (!list_empty(&q->queue))
129 next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
131 DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n",
132 buf, q->queue.prev, q->queue.next);
133 buf->activate(dev,buf,next);
135 DEB_INT("no next buffer. stopping.\n");
137 /* turn off video-dma3 */
138 saa7146_write(dev,MC1, MASK_20);
140 /* nothing to do -- just prevent next video-dma1 transfer
141 by lowering the protection address */
143 // fixme: fix this for vflip != 0
145 saa7146_write(dev, PROT_ADDR1, 0);
146 saa7146_write(dev, MC2, (MASK_02|MASK_18));
148 /* write the address of the rps-program */
149 saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
151 saa7146_write(dev, MC1, (MASK_12 | MASK_28));
154 printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
155 printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
156 printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
157 printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
158 printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
159 printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
162 del_timer(&q->timeout);
166 void saa7146_buffer_timeout(unsigned long data)
168 struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data;
169 struct saa7146_dev *dev = q->dev;
172 DEB_EE("dev:%p, dmaq:%p\n", dev, q);
174 spin_lock_irqsave(&dev->slock,flags);
176 DEB_D("timeout on %p\n", q->curr);
177 saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR);
180 /* we don't restart the transfer here like other drivers do. when
181 a streaming capture is disabled, the timeout function will be
182 called for the current buffer. if we activate the next buffer now,
183 we mess up our capture logic. if a timeout occurs on another buffer,
184 then something is seriously broken before, so no need to buffer the
185 next capture IMHO... */
187 saa7146_buffer_next(dev,q);
189 spin_unlock_irqrestore(&dev->slock,flags);
192 /********************************************************************************/
193 /* file operations */
195 static int fops_open(struct file *file)
197 struct video_device *vdev = video_devdata(file);
198 struct saa7146_dev *dev = video_drvdata(file);
199 struct saa7146_fh *fh = NULL;
201 enum v4l2_buf_type type;
203 DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev));
205 if (mutex_lock_interruptible(&saa7146_devices_lock))
208 DEB_D("using: %p\n", dev);
210 type = vdev->vfl_type == VFL_TYPE_GRABBER
211 ? V4L2_BUF_TYPE_VIDEO_CAPTURE
212 : V4L2_BUF_TYPE_VBI_CAPTURE;
214 /* check if an extension is registered */
215 if( NULL == dev->ext ) {
216 DEB_S("no extension registered for this device\n");
221 /* allocate per open data */
222 fh = kzalloc(sizeof(*fh),GFP_KERNEL);
224 DEB_S("cannot allocate memory for per open data\n");
229 v4l2_fh_init(&fh->fh, vdev);
231 file->private_data = &fh->fh;
234 if (vdev->vfl_type == VFL_TYPE_VBI) {
235 DEB_S("initializing vbi...\n");
236 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
237 result = saa7146_vbi_uops.open(dev,file);
238 if (dev->ext_vv_data->vbi_fops.open)
239 dev->ext_vv_data->vbi_fops.open(file);
241 DEB_S("initializing video...\n");
242 result = saa7146_video_uops.open(dev,file);
249 if( 0 == try_module_get(dev->ext->module)) {
255 v4l2_fh_add(&fh->fh);
257 if (fh && result != 0) {
259 file->private_data = NULL;
261 mutex_unlock(&saa7146_devices_lock);
265 static int fops_release(struct file *file)
267 struct video_device *vdev = video_devdata(file);
268 struct saa7146_fh *fh = file->private_data;
269 struct saa7146_dev *dev = fh->dev;
271 DEB_EE("file:%p\n", file);
273 if (mutex_lock_interruptible(&saa7146_devices_lock))
276 if (vdev->vfl_type == VFL_TYPE_VBI) {
277 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
278 saa7146_vbi_uops.release(dev,file);
279 if (dev->ext_vv_data->vbi_fops.release)
280 dev->ext_vv_data->vbi_fops.release(file);
282 saa7146_video_uops.release(dev,file);
285 v4l2_fh_del(&fh->fh);
286 v4l2_fh_exit(&fh->fh);
287 module_put(dev->ext->module);
288 file->private_data = NULL;
291 mutex_unlock(&saa7146_devices_lock);
296 static int fops_mmap(struct file *file, struct vm_area_struct * vma)
298 struct video_device *vdev = video_devdata(file);
299 struct saa7146_fh *fh = file->private_data;
300 struct videobuf_queue *q;
302 switch (vdev->vfl_type) {
303 case VFL_TYPE_GRABBER: {
304 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",
310 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",
312 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT)
322 return videobuf_mmap_mapper(q,vma);
325 static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
327 struct video_device *vdev = video_devdata(file);
328 struct saa7146_fh *fh = file->private_data;
329 struct videobuf_buffer *buf = NULL;
330 struct videobuf_queue *q;
331 unsigned int res = v4l2_ctrl_poll(file, wait);
333 DEB_EE("file:%p, poll:%p\n", file, wait);
335 if (vdev->vfl_type == VFL_TYPE_VBI) {
336 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_SLICED_VBI_OUTPUT)
337 return res | POLLOUT | POLLWRNORM;
338 if( 0 == fh->vbi_q.streaming )
339 return res | videobuf_poll_stream(file, &fh->vbi_q, wait);
342 DEB_D("using video queue\n");
346 if (!list_empty(&q->stream))
347 buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
350 DEB_D("buf == NULL!\n");
351 return res | POLLERR;
354 poll_wait(file, &buf->done, wait);
355 if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) {
356 DEB_D("poll succeeded!\n");
357 return res | POLLIN | POLLRDNORM;
360 DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
364 static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
366 struct video_device *vdev = video_devdata(file);
367 struct saa7146_fh *fh = file->private_data;
369 switch (vdev->vfl_type) {
370 case VFL_TYPE_GRABBER:
372 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun",
373 file, data, (unsigned long)count);
375 return saa7146_video_uops.read(file,data,count,ppos);
378 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n",
379 file, data, (unsigned long)count);
381 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
382 return saa7146_vbi_uops.read(file,data,count,ppos);
390 static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
392 struct video_device *vdev = video_devdata(file);
393 struct saa7146_fh *fh = file->private_data;
395 switch (vdev->vfl_type) {
396 case VFL_TYPE_GRABBER:
399 if (fh->dev->ext_vv_data->vbi_fops.write)
400 return fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
409 static const struct v4l2_file_operations video_fops =
411 .owner = THIS_MODULE,
413 .release = fops_release,
418 .unlocked_ioctl = video_ioctl2,
421 static void vv_callback(struct saa7146_dev *dev, unsigned long status)
425 DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status);
427 if (0 != (isr & (MASK_27))) {
428 DEB_INT("irq: RPS0 (0x%08x)\n", isr);
429 saa7146_video_uops.irq_done(dev,isr);
432 if (0 != (isr & (MASK_28))) {
433 u32 mc2 = saa7146_read(dev, MC2);
434 if( 0 != (mc2 & MASK_15)) {
435 DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr);
436 wake_up(&dev->vv_data->vbi_wq);
437 saa7146_write(dev,MC2, MASK_31);
440 DEB_INT("irq: RPS1 (0x%08x)\n", isr);
441 saa7146_vbi_uops.irq_done(dev,isr);
445 static const struct v4l2_ctrl_ops saa7146_ctrl_ops = {
446 .s_ctrl = saa7146_s_ctrl,
449 int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
451 struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
452 struct v4l2_pix_format *fmt;
453 struct v4l2_vbi_format *vbi;
454 struct saa7146_vv *vv;
457 err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev);
461 v4l2_ctrl_handler_init(hdl, 6);
462 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
463 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
464 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
465 V4L2_CID_CONTRAST, 0, 127, 1, 64);
466 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
467 V4L2_CID_SATURATION, 0, 127, 1, 64);
468 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
469 V4L2_CID_VFLIP, 0, 1, 1, 0);
470 v4l2_ctrl_new_std(hdl, &saa7146_ctrl_ops,
471 V4L2_CID_HFLIP, 0, 1, 1, 0);
474 v4l2_ctrl_handler_free(hdl);
477 dev->v4l2_dev.ctrl_handler = hdl;
479 vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL);
481 ERR("out of memory. aborting.\n");
482 v4l2_ctrl_handler_free(hdl);
485 ext_vv->vid_ops = saa7146_video_ioctl_ops;
486 ext_vv->vbi_ops = saa7146_vbi_ioctl_ops;
487 ext_vv->core_ops = &saa7146_video_ioctl_ops;
489 DEB_EE("dev:%p\n", dev);
491 /* set default values for video parts of the saa7146 */
492 saa7146_write(dev, BCS_CTRL, 0x80400040);
494 /* enable video-port pins */
495 saa7146_write(dev, MC1, (MASK_10 | MASK_26));
497 /* save per-device extension data (one extension can
498 handle different devices that might need different
499 configuration data) */
500 dev->ext_vv_data = ext_vv;
502 vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
503 if( NULL == vv->d_clipping.cpu_addr ) {
504 ERR("out of memory. aborting.\n");
506 v4l2_ctrl_handler_free(hdl);
509 memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);
511 saa7146_video_uops.init(dev,vv);
512 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
513 saa7146_vbi_uops.init(dev,vv);
515 fmt = &vv->ov_fb.fmt;
516 fmt->width = vv->standard->h_max_out;
517 fmt->height = vv->standard->v_max_out;
518 fmt->pixelformat = V4L2_PIX_FMT_RGB565;
519 fmt->bytesperline = 2 * fmt->width;
520 fmt->sizeimage = fmt->bytesperline * fmt->height;
521 fmt->colorspace = V4L2_COLORSPACE_SRGB;
523 fmt = &vv->video_fmt;
526 fmt->pixelformat = V4L2_PIX_FMT_BGR24;
527 fmt->field = V4L2_FIELD_ANY;
528 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
529 fmt->bytesperline = 3 * fmt->width;
530 fmt->sizeimage = fmt->bytesperline * fmt->height;
533 vbi->sampling_rate = 27000000;
534 vbi->offset = 248; /* todo */
535 vbi->samples_per_line = 720 * 2;
536 vbi->sample_format = V4L2_PIX_FMT_GREY;
538 /* fixme: this only works for PAL */
544 init_timer(&vv->vbi_read_timeout);
546 vv->ov_fb.capability = V4L2_FBUF_CAP_LIST_CLIPPING;
547 vv->ov_fb.flags = V4L2_FBUF_FLAG_PRIMARY;
549 dev->vv_callback = &vv_callback;
553 EXPORT_SYMBOL_GPL(saa7146_vv_init);
555 int saa7146_vv_release(struct saa7146_dev* dev)
557 struct saa7146_vv *vv = dev->vv_data;
559 DEB_EE("dev:%p\n", dev);
561 v4l2_device_unregister(&dev->v4l2_dev);
562 pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
563 v4l2_ctrl_handler_free(&dev->ctrl_handler);
566 dev->vv_callback = NULL;
570 EXPORT_SYMBOL_GPL(saa7146_vv_release);
572 int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev,
573 char *name, int type)
575 struct video_device *vfd;
579 DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type);
581 // released by vfd->release
582 vfd = video_device_alloc();
586 vfd->fops = &video_fops;
587 if (type == VFL_TYPE_GRABBER)
588 vfd->ioctl_ops = &dev->ext_vv_data->vid_ops;
590 vfd->ioctl_ops = &dev->ext_vv_data->vbi_ops;
591 vfd->release = video_device_release;
592 /* Locking in file operations other than ioctl should be done by
593 the driver, not the V4L2 core.
594 This driver needs auditing so that this flag can be removed. */
595 set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
596 vfd->lock = &dev->v4l2_lock;
597 vfd->v4l2_dev = &dev->v4l2_dev;
599 set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
600 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
601 vfd->tvnorms |= dev->ext_vv_data->stds[i].id;
602 strlcpy(vfd->name, name, sizeof(vfd->name));
603 video_set_drvdata(vfd, dev);
605 err = video_register_device(vfd, type, -1);
607 ERR("cannot register v4l2 device. skipping.\n");
608 video_device_release(vfd);
612 pr_info("%s: registered device %s [v4l2]\n",
613 dev->name, video_device_node_name(vfd));
618 EXPORT_SYMBOL_GPL(saa7146_register_device);
620 int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev)
622 DEB_EE("dev:%p\n", dev);
624 video_unregister_device(*vid);
629 EXPORT_SYMBOL_GPL(saa7146_unregister_device);
631 static int __init saa7146_vv_init_module(void)
637 static void __exit saa7146_vv_cleanup_module(void)
641 module_init(saa7146_vv_init_module);
642 module_exit(saa7146_vv_cleanup_module);
644 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
645 MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
646 MODULE_LICENSE("GPL");