2 * device driver for philips saa7134 based TV cards
3 * video4linux video interface
5 * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/init.h>
23 #include <linux/list.h>
24 #include <linux/module.h>
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
29 #include "saa7134-reg.h"
32 #include <media/saa6752hs.h>
34 /* ------------------------------------------------------------------ */
36 static unsigned int ts_debug = 0;
37 MODULE_PARM(ts_debug,"i");
38 MODULE_PARM_DESC(ts_debug,"enable debug messages [ts]");
40 static unsigned int tsbufs = 4;
41 MODULE_PARM(tsbufs,"i");
42 MODULE_PARM_DESC(tsbufs,"number of ts buffers, range 2-32");
44 #define TS_PACKET_SIZE 188 /* TS packets 188 bytes */
45 #define TS_NR_PACKETS 312
47 #define dprintk(fmt, arg...) if (ts_debug) \
48 printk(KERN_DEBUG "%s/ts: " fmt, dev->name , ## arg)
50 /* ------------------------------------------------------------------ */
52 static int buffer_activate(struct saa7134_dev *dev,
53 struct saa7134_buf *buf,
54 struct saa7134_buf *next)
58 dprintk("buffer_activate [%p]",buf);
59 buf->vb.state = STATE_ACTIVE;
62 /* dma: setup channel 5 (= TS) */
63 control = SAA7134_RS_CONTROL_BURST_16 |
64 SAA7134_RS_CONTROL_ME |
69 if (V4L2_FIELD_TOP == buf->vb.field) {
70 dprintk("- [top] buf=%p next=%p\n",buf,next);
71 saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(buf));
72 saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(next));
74 dprintk("- [bottom] buf=%p next=%p\n",buf,next);
75 saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next));
76 saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf));
78 saa_writel(SAA7134_RS_PITCH(5),TS_PACKET_SIZE);
79 saa_writel(SAA7134_RS_CONTROL(5),control);
82 saa7134_set_dmabits(dev);
84 mod_timer(&dev->ts_q.timeout, jiffies+BUFFER_TIMEOUT);
88 static int buffer_prepare(struct file *file, struct videobuf_buffer *vb,
89 enum v4l2_field field)
91 struct saa7134_dev *dev = file->private_data;
92 struct saa7134_buf *buf = (struct saa7134_buf *)vb;
93 unsigned int lines, llength, size;
96 dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]);
98 llength = TS_PACKET_SIZE;
99 lines = TS_NR_PACKETS;
101 size = lines * llength;
102 if (0 != buf->vb.baddr && buf->vb.bsize < size)
105 if (buf->vb.size != size) {
106 saa7134_dma_free(dev,buf);
109 if (STATE_NEEDS_INIT == buf->vb.state) {
110 buf->vb.width = llength;
111 buf->vb.height = lines;
113 buf->pt = &dev->ts.pt_ts;
115 err = videobuf_iolock(dev->pci,&buf->vb,NULL);
118 err = saa7134_pgtable_build(dev->pci,buf->pt,
121 saa7134_buffer_startpage(buf));
125 buf->vb.state = STATE_PREPARED;
126 buf->activate = buffer_activate;
127 buf->vb.field = field;
131 saa7134_dma_free(dev,buf);
136 buffer_setup(struct file *file, unsigned int *count, unsigned int *size)
138 *size = TS_PACKET_SIZE * TS_NR_PACKETS;
141 *count = saa7134_buffer_count(*size,*count);
145 static void buffer_queue(struct file *file, struct videobuf_buffer *vb)
147 struct saa7134_dev *dev = file->private_data;
148 struct saa7134_buf *buf = (struct saa7134_buf *)vb;
150 saa7134_buffer_queue(dev,&dev->ts_q,buf);
153 static void buffer_release(struct file *file, struct videobuf_buffer *vb)
155 struct saa7134_dev *dev = file->private_data;
156 struct saa7134_buf *buf = (struct saa7134_buf *)vb;
158 saa7134_dma_free(dev,buf);
161 static struct videobuf_queue_ops ts_qops = {
162 .buf_setup = buffer_setup,
163 .buf_prepare = buffer_prepare,
164 .buf_queue = buffer_queue,
165 .buf_release = buffer_release,
169 /* ------------------------------------------------------------------ */
171 static void ts_reset_encoder(struct saa7134_dev* dev)
173 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
175 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
176 set_current_state(TASK_INTERRUPTIBLE);
177 schedule_timeout(HZ/10);
180 static int ts_init_encoder(struct saa7134_dev* dev, void* arg)
182 ts_reset_encoder(dev);
183 saa7134_i2c_call_clients(dev, MPEG_SETPARAMS, arg);
188 /* ------------------------------------------------------------------ */
190 static int ts_open(struct inode *inode, struct file *file)
192 int minor = iminor(inode);
193 struct saa7134_dev *h,*dev = NULL;
194 struct list_head *list;
197 list_for_each(list,&saa7134_devlist) {
198 h = list_entry(list, struct saa7134_dev, devlist);
199 if (h->ts_dev && h->ts_dev->minor == minor)
205 dprintk("open minor=%d\n",minor);
206 down(&dev->ts.ts.lock);
213 file->private_data = dev;
217 up(&dev->ts.ts.lock);
221 static int ts_release(struct inode *inode, struct file *file)
223 struct saa7134_dev *dev = file->private_data;
225 if (dev->ts.ts.streaming)
226 videobuf_streamoff(file,&dev->ts.ts);
227 down(&dev->ts.ts.lock);
228 if (dev->ts.ts.reading)
229 videobuf_read_stop(file,&dev->ts.ts);
232 /* stop the encoder */
234 ts_reset_encoder(dev);
236 up(&dev->ts.ts.lock);
241 ts_read(struct file *file, char *data, size_t count, loff_t *ppos)
243 struct saa7134_dev *dev = file->private_data;
245 if (!dev->ts.started) {
246 ts_init_encoder(dev, NULL);
250 return videobuf_read_stream(file, &dev->ts.ts, data, count, ppos, 0);
254 ts_poll(struct file *file, struct poll_table_struct *wait)
256 struct saa7134_dev *dev = file->private_data;
258 return videobuf_poll_stream(file, &dev->ts.ts, wait);
263 ts_mmap(struct file *file, struct vm_area_struct * vma)
265 struct saa7134_dev *dev = file->private_data;
267 return videobuf_mmap_mapper(vma, &dev->ts.ts);
271 * This function is _not_ called directly, but from
272 * video_generic_ioctl (and maybe others). userspace
273 * copying is done already, arg is a kernel pointer.
275 static int ts_do_ioctl(struct inode *inode, struct file *file,
276 unsigned int cmd, void *arg)
278 struct saa7134_dev *dev = file->private_data;
281 saa7134_print_ioctl(dev->name,cmd);
283 case VIDIOC_QUERYCAP:
285 struct v4l2_capability *cap = arg;
287 memset(cap,0,sizeof(*cap));
288 strcpy(cap->driver, "saa7134");
289 strlcpy(cap->card, saa7134_boards[dev->board].name,
291 sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
292 cap->version = SAA7134_VERSION_CODE;
294 V4L2_CAP_VIDEO_CAPTURE |
300 /* --- input switching --------------------------------------- */
301 case VIDIOC_ENUMINPUT:
303 struct v4l2_input *i = arg;
307 i->type = V4L2_INPUT_TYPE_CAMERA;
308 strcpy(i->name,"CCIR656");
325 /* --- capture ioctls ---------------------------------------- */
327 case VIDIOC_ENUM_FMT:
329 struct v4l2_fmtdesc *f = arg;
336 memset(f,0,sizeof(*f));
338 strlcpy(f->description, "MPEG TS", sizeof(f->description));
339 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
340 f->pixelformat = V4L2_PIX_FMT_MPEG;
346 struct v4l2_format *f = arg;
348 memset(f,0,sizeof(*f));
349 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
351 /* FIXME: translate subsampling type EMPRESS into
353 f->fmt.pix.width = 720; /* D1 */
354 f->fmt.pix.height = 576;
355 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
356 f->fmt.pix.sizeimage = TS_PACKET_SIZE*TS_NR_PACKETS;
362 struct v4l2_format *f = arg;
364 if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
368 FIXME: translate and round width/height into EMPRESS
372 ---------------------------
373 SIF | 352x288 | 352x240
374 1/2 D1 | 352x576 | 352x480
375 2/3 D1 | 480x576 | 480x480
376 D1 | 720x576 | 720x480
379 f->fmt.pix.width = 720; /* D1 */
380 f->fmt.pix.height = 576;
381 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
382 f->fmt.pix.sizeimage = TS_PACKET_SIZE*TS_NR_PACKETS;
387 return videobuf_reqbufs(file,&dev->ts.ts,arg);
389 case VIDIOC_QUERYBUF:
390 return videobuf_querybuf(&dev->ts.ts,arg);
393 return videobuf_qbuf(file,&dev->ts.ts,arg);
396 return videobuf_dqbuf(file,&dev->ts.ts,arg);
398 case VIDIOC_STREAMON:
399 return videobuf_streamon(file,&dev->ts.ts);
401 case VIDIOC_STREAMOFF:
402 return videobuf_streamoff(file,&dev->ts.ts);
404 case VIDIOC_QUERYCTRL:
407 return saa7134_common_ioctl(dev, cmd, arg);
410 return ts_init_encoder(dev, arg);
418 static int ts_ioctl(struct inode *inode, struct file *file,
419 unsigned int cmd, unsigned long arg)
421 return video_usercopy(inode, file, cmd, arg, ts_do_ioctl);
425 static struct file_operations ts_fops =
427 .owner = THIS_MODULE,
429 .release = ts_release,
438 /* ----------------------------------------------------------- */
441 struct video_device saa7134_ts_template =
443 .name = "saa7134-ts",
444 .type = 0 /* FIXME */,
445 .type2 = 0 /* FIXME */,
451 int saa7134_ts_init1(struct saa7134_dev *dev)
453 /* sanitycheck insmod options */
456 if (tsbufs > VIDEO_MAX_FRAME)
457 tsbufs = VIDEO_MAX_FRAME;
459 INIT_LIST_HEAD(&dev->ts_q.queue);
460 init_timer(&dev->ts_q.timeout);
461 dev->ts_q.timeout.function = saa7134_buffer_timeout;
462 dev->ts_q.timeout.data = (unsigned long)(&dev->ts_q);
464 dev->ts_q.need_two = 1;
465 videobuf_queue_init(&dev->ts.ts, &ts_qops, dev->pci, &dev->slock,
466 V4L2_BUF_TYPE_VIDEO_CAPTURE,
467 V4L2_FIELD_ALTERNATE,
468 sizeof(struct saa7134_buf));
469 saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts);
472 saa_writeb(SAA7134_TS_SERIAL1, 0x00); /* deactivate TS softreset */
473 saa_writeb(SAA7134_TS_PARALLEL, 0xec); /* TSSOP high active, TSVAL high active, TSLOCK ignored */
474 saa_writeb(SAA7134_TS_PARALLEL_SERIAL, (TS_PACKET_SIZE-1));
475 saa_writeb(SAA7134_TS_DMA0, ((TS_NR_PACKETS-1)&0xff));
476 saa_writeb(SAA7134_TS_DMA1, (((TS_NR_PACKETS-1)>>8)&0xff));
477 saa_writeb(SAA7134_TS_DMA2, ((((TS_NR_PACKETS-1)>>16)&0x3f) | 0x00)); /* TSNOPIT=0, TSCOLAP=0 */
482 int saa7134_ts_fini(struct saa7134_dev *dev)
485 saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts);
490 void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status)
492 enum v4l2_field field;
494 spin_lock(&dev->slock);
495 if (dev->ts_q.curr) {
496 field = dev->ts_q.curr->vb.field;
497 if (field == V4L2_FIELD_TOP) {
498 if ((status & 0x100000) != 0x100000)
501 if ((status & 0x100000) != 0x000000)
504 saa7134_buffer_finish(dev,&dev->ts_q,STATE_DONE);
506 saa7134_buffer_next(dev,&dev->ts_q);
509 spin_unlock(&dev->slock);
512 /* ----------------------------------------------------------- */