1 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
3 #include <media/saa7146_vv.h>
5 /****************************************************************************/
6 /* resource management functions, shamelessly stolen from saa7134 driver */
8 int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit)
10 struct saa7146_dev *dev = fh->dev;
11 struct saa7146_vv *vv = dev->vv_data;
13 if (fh->resources & bit) {
14 DEB_D("already allocated! want: 0x%02x, cur:0x%02x\n",
16 /* have it already allocated */
21 if (vv->resources & bit) {
22 DEB_D("locked! vv->resources:0x%02x, we want:0x%02x\n",
24 /* no, someone else uses it */
27 /* it's free, grab it */
30 DEB_D("res: get 0x%02x, cur:0x%02x\n", bit, vv->resources);
34 void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits)
36 struct saa7146_dev *dev = fh->dev;
37 struct saa7146_vv *vv = dev->vv_data;
39 BUG_ON((fh->resources & bits) != bits);
41 fh->resources &= ~bits;
42 vv->resources &= ~bits;
43 DEB_D("res: put 0x%02x, cur:0x%02x\n", bits, vv->resources);
47 /********************************************************************************/
48 /* common dma functions */
50 void saa7146_dma_free(struct saa7146_dev *dev,struct videobuf_queue *q,
51 struct saa7146_buf *buf)
53 struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
54 DEB_EE("dev:%p, buf:%p\n", dev, buf);
56 BUG_ON(in_interrupt());
58 videobuf_waiton(q, &buf->vb, 0, 0);
59 videobuf_dma_unmap(q->dev, dma);
60 videobuf_dma_free(dma);
61 buf->vb.state = VIDEOBUF_NEEDS_INIT;
65 /********************************************************************************/
66 /* common buffer functions */
68 int saa7146_buffer_queue(struct saa7146_dev *dev,
69 struct saa7146_dmaqueue *q,
70 struct saa7146_buf *buf)
72 assert_spin_locked(&dev->slock);
73 DEB_EE("dev:%p, dmaq:%p, buf:%p\n", dev, q, buf);
77 if (NULL == q->curr) {
79 DEB_D("immediately activating buffer %p\n", buf);
80 buf->activate(dev,buf,NULL);
82 list_add_tail(&buf->vb.queue,&q->queue);
83 buf->vb.state = VIDEOBUF_QUEUED;
84 DEB_D("adding buffer %p to queue. (active buffer present)\n",
90 void saa7146_buffer_finish(struct saa7146_dev *dev,
91 struct saa7146_dmaqueue *q,
94 assert_spin_locked(&dev->slock);
95 DEB_EE("dev:%p, dmaq:%p, state:%d\n", dev, q, state);
96 DEB_EE("q->curr:%p\n", q->curr);
100 /* finish current buffer */
101 if (NULL == q->curr) {
102 DEB_D("aiii. no current buffer\n");
106 q->curr->vb.state = state;
107 do_gettimeofday(&q->curr->vb.ts);
108 wake_up(&q->curr->vb.done);
113 void saa7146_buffer_next(struct saa7146_dev *dev,
114 struct saa7146_dmaqueue *q, int vbi)
116 struct saa7146_buf *buf,*next = NULL;
120 DEB_INT("dev:%p, dmaq:%p, vbi:%d\n", dev, q, vbi);
122 assert_spin_locked(&dev->slock);
123 if (!list_empty(&q->queue)) {
124 /* activate next one from queue */
125 buf = list_entry(q->queue.next,struct saa7146_buf,vb.queue);
126 list_del(&buf->vb.queue);
127 if (!list_empty(&q->queue))
128 next = list_entry(q->queue.next,struct saa7146_buf, vb.queue);
130 DEB_INT("next buffer: buf:%p, prev:%p, next:%p\n",
131 buf, q->queue.prev, q->queue.next);
132 buf->activate(dev,buf,next);
134 DEB_INT("no next buffer. stopping.\n");
136 /* turn off video-dma3 */
137 saa7146_write(dev,MC1, MASK_20);
139 /* nothing to do -- just prevent next video-dma1 transfer
140 by lowering the protection address */
142 // fixme: fix this for vflip != 0
144 saa7146_write(dev, PROT_ADDR1, 0);
145 saa7146_write(dev, MC2, (MASK_02|MASK_18));
147 /* write the address of the rps-program */
148 saa7146_write(dev, RPS_ADDR0, dev->d_rps0.dma_handle);
150 saa7146_write(dev, MC1, (MASK_12 | MASK_28));
153 printk("vdma%d.base_even: 0x%08x\n", 1,saa7146_read(dev,BASE_EVEN1));
154 printk("vdma%d.base_odd: 0x%08x\n", 1,saa7146_read(dev,BASE_ODD1));
155 printk("vdma%d.prot_addr: 0x%08x\n", 1,saa7146_read(dev,PROT_ADDR1));
156 printk("vdma%d.base_page: 0x%08x\n", 1,saa7146_read(dev,BASE_PAGE1));
157 printk("vdma%d.pitch: 0x%08x\n", 1,saa7146_read(dev,PITCH1));
158 printk("vdma%d.num_line_byte: 0x%08x\n", 1,saa7146_read(dev,NUM_LINE_BYTE1));
161 del_timer(&q->timeout);
165 void saa7146_buffer_timeout(unsigned long data)
167 struct saa7146_dmaqueue *q = (struct saa7146_dmaqueue*)data;
168 struct saa7146_dev *dev = q->dev;
171 DEB_EE("dev:%p, dmaq:%p\n", dev, q);
173 spin_lock_irqsave(&dev->slock,flags);
175 DEB_D("timeout on %p\n", q->curr);
176 saa7146_buffer_finish(dev,q,VIDEOBUF_ERROR);
179 /* we don't restart the transfer here like other drivers do. when
180 a streaming capture is disabled, the timeout function will be
181 called for the current buffer. if we activate the next buffer now,
182 we mess up our capture logic. if a timeout occurs on another buffer,
183 then something is seriously broken before, so no need to buffer the
184 next capture IMHO... */
186 saa7146_buffer_next(dev,q);
188 spin_unlock_irqrestore(&dev->slock,flags);
191 /********************************************************************************/
192 /* file operations */
194 static int fops_open(struct file *file)
196 struct video_device *vdev = video_devdata(file);
197 struct saa7146_dev *dev = video_drvdata(file);
198 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 file->private_data = fh;
233 if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
234 DEB_S("initializing vbi...\n");
235 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
236 result = saa7146_vbi_uops.open(dev,file);
237 if (dev->ext_vv_data->vbi_fops.open)
238 dev->ext_vv_data->vbi_fops.open(file);
240 DEB_S("initializing video...\n");
241 result = saa7146_video_uops.open(dev,file);
248 if( 0 == try_module_get(dev->ext->module)) {
255 if (fh && result != 0) {
257 file->private_data = NULL;
259 mutex_unlock(&saa7146_devices_lock);
263 static int fops_release(struct file *file)
265 struct saa7146_fh *fh = file->private_data;
266 struct saa7146_dev *dev = fh->dev;
268 DEB_EE("file:%p\n", file);
270 if (mutex_lock_interruptible(&saa7146_devices_lock))
273 if( fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
274 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
275 saa7146_vbi_uops.release(dev,file);
276 if (dev->ext_vv_data->vbi_fops.release)
277 dev->ext_vv_data->vbi_fops.release(file);
279 saa7146_video_uops.release(dev,file);
282 module_put(dev->ext->module);
283 file->private_data = NULL;
286 mutex_unlock(&saa7146_devices_lock);
291 static int fops_mmap(struct file *file, struct vm_area_struct * vma)
293 struct saa7146_fh *fh = file->private_data;
294 struct videobuf_queue *q;
297 case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
298 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, vma:%p\n",
303 case V4L2_BUF_TYPE_VBI_CAPTURE: {
304 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, vma:%p\n",
314 return videobuf_mmap_mapper(q,vma);
317 static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
319 struct saa7146_fh *fh = file->private_data;
320 struct videobuf_buffer *buf = NULL;
321 struct videobuf_queue *q;
323 DEB_EE("file:%p, poll:%p\n", file, wait);
325 if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
326 if( 0 == fh->vbi_q.streaming )
327 return videobuf_poll_stream(file, &fh->vbi_q, wait);
330 DEB_D("using video queue\n");
334 if (!list_empty(&q->stream))
335 buf = list_entry(q->stream.next, struct videobuf_buffer, stream);
338 DEB_D("buf == NULL!\n");
342 poll_wait(file, &buf->done, wait);
343 if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) {
344 DEB_D("poll succeeded!\n");
345 return POLLIN|POLLRDNORM;
348 DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
352 static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
354 struct saa7146_fh *fh = file->private_data;
357 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
359 DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: file:%p, data:%p, count:%lun",
360 file, data, (unsigned long)count);
362 return saa7146_video_uops.read(file,data,count,ppos);
363 case V4L2_BUF_TYPE_VBI_CAPTURE:
365 DEB_EE("V4L2_BUF_TYPE_VBI_CAPTURE: file:%p, data:%p, count:%lu\n",
366 file, data, (unsigned long)count);
368 if (fh->dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
369 return saa7146_vbi_uops.read(file,data,count,ppos);
377 static ssize_t fops_write(struct file *file, const char __user *data, size_t count, loff_t *ppos)
379 struct saa7146_fh *fh = file->private_data;
382 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
384 case V4L2_BUF_TYPE_VBI_CAPTURE:
385 if (fh->dev->ext_vv_data->vbi_fops.write)
386 return fh->dev->ext_vv_data->vbi_fops.write(file, data, count, ppos);
395 static const struct v4l2_file_operations video_fops =
397 .owner = THIS_MODULE,
399 .release = fops_release,
404 .unlocked_ioctl = video_ioctl2,
407 static void vv_callback(struct saa7146_dev *dev, unsigned long status)
411 DEB_INT("dev:%p, isr:0x%08x\n", dev, (u32)status);
413 if (0 != (isr & (MASK_27))) {
414 DEB_INT("irq: RPS0 (0x%08x)\n", isr);
415 saa7146_video_uops.irq_done(dev,isr);
418 if (0 != (isr & (MASK_28))) {
419 u32 mc2 = saa7146_read(dev, MC2);
420 if( 0 != (mc2 & MASK_15)) {
421 DEB_INT("irq: RPS1 vbi workaround (0x%08x)\n", isr);
422 wake_up(&dev->vv_data->vbi_wq);
423 saa7146_write(dev,MC2, MASK_31);
426 DEB_INT("irq: RPS1 (0x%08x)\n", isr);
427 saa7146_vbi_uops.irq_done(dev,isr);
431 int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
433 struct saa7146_vv *vv;
436 err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev);
440 vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL);
442 ERR("out of memory. aborting.\n");
445 ext_vv->ops = saa7146_video_ioctl_ops;
446 ext_vv->core_ops = &saa7146_video_ioctl_ops;
448 DEB_EE("dev:%p\n", dev);
450 /* set default values for video parts of the saa7146 */
451 saa7146_write(dev, BCS_CTRL, 0x80400040);
453 /* enable video-port pins */
454 saa7146_write(dev, MC1, (MASK_10 | MASK_26));
456 /* save per-device extension data (one extension can
457 handle different devices that might need different
458 configuration data) */
459 dev->ext_vv_data = ext_vv;
461 vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
462 if( NULL == vv->d_clipping.cpu_addr ) {
463 ERR("out of memory. aborting.\n");
467 memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);
469 saa7146_video_uops.init(dev,vv);
470 if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
471 saa7146_vbi_uops.init(dev,vv);
474 dev->vv_callback = &vv_callback;
478 EXPORT_SYMBOL_GPL(saa7146_vv_init);
480 int saa7146_vv_release(struct saa7146_dev* dev)
482 struct saa7146_vv *vv = dev->vv_data;
484 DEB_EE("dev:%p\n", dev);
486 v4l2_device_unregister(&dev->v4l2_dev);
487 pci_free_consistent(dev->pci, SAA7146_CLIPPING_MEM, vv->d_clipping.cpu_addr, vv->d_clipping.dma_handle);
490 dev->vv_callback = NULL;
494 EXPORT_SYMBOL_GPL(saa7146_vv_release);
496 int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev,
497 char *name, int type)
499 struct video_device *vfd;
503 DEB_EE("dev:%p, name:'%s', type:%d\n", dev, name, type);
505 // released by vfd->release
506 vfd = video_device_alloc();
510 vfd->fops = &video_fops;
511 vfd->ioctl_ops = &dev->ext_vv_data->ops;
512 vfd->release = video_device_release;
513 vfd->lock = &dev->v4l2_lock;
515 for (i = 0; i < dev->ext_vv_data->num_stds; i++)
516 vfd->tvnorms |= dev->ext_vv_data->stds[i].id;
517 strlcpy(vfd->name, name, sizeof(vfd->name));
518 video_set_drvdata(vfd, dev);
520 err = video_register_device(vfd, type, -1);
522 ERR("cannot register v4l2 device. skipping.\n");
523 video_device_release(vfd);
527 pr_info("%s: registered device %s [v4l2]\n",
528 dev->name, video_device_node_name(vfd));
533 EXPORT_SYMBOL_GPL(saa7146_register_device);
535 int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev)
537 DEB_EE("dev:%p\n", dev);
539 video_unregister_device(*vid);
544 EXPORT_SYMBOL_GPL(saa7146_unregister_device);
546 static int __init saa7146_vv_init_module(void)
552 static void __exit saa7146_vv_cleanup_module(void)
556 module_init(saa7146_vv_init_module);
557 module_exit(saa7146_vv_cleanup_module);
559 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
560 MODULE_DESCRIPTION("video4linux driver for saa7146-based hardware");
561 MODULE_LICENSE("GPL");