2 em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB
5 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
6 Markus Rechberger <mrechberger@gmail.com>
7 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Sascha Sommer <saschasommer@freenet.de>
10 Some parts based on SN9C10x PC Camera Controllers GPL driver made
11 by Luca Risolia <luca.risolia@studio.unibo.it>
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <linux/init.h>
29 #include <linux/list.h>
30 #include <linux/module.h>
31 #include <linux/kernel.h>
32 #include <linux/bitmap.h>
33 #include <linux/usb.h>
34 #include <linux/i2c.h>
35 #include <linux/version.h>
37 #include <linux/mutex.h>
40 #include <media/v4l2-common.h>
41 #include <media/v4l2-ioctl.h>
42 #include <media/v4l2-chip-ident.h>
43 #include <media/msp3400.h>
44 #include <media/tuner.h>
46 #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \
47 "Markus Rechberger <mrechberger@gmail.com>, " \
48 "Mauro Carvalho Chehab <mchehab@infradead.org>, " \
49 "Sascha Sommer <saschasommer@freenet.de>"
51 #define DRIVER_DESC "Empia em28xx based USB video device driver"
52 #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 1)
54 #define em28xx_videodbg(fmt, arg...) do {\
56 printk(KERN_INFO "%s %s :"fmt, \
57 dev->name, __func__ , ##arg); } while (0)
59 static unsigned int isoc_debug
;
60 module_param(isoc_debug
, int, 0644);
61 MODULE_PARM_DESC(isoc_debug
, "enable debug messages [isoc transfers]");
63 #define em28xx_isocdbg(fmt, arg...) \
66 printk(KERN_INFO "%s %s :"fmt, \
67 dev->name, __func__ , ##arg); \
71 MODULE_AUTHOR(DRIVER_AUTHOR
);
72 MODULE_DESCRIPTION(DRIVER_DESC
);
73 MODULE_LICENSE("GPL");
75 static unsigned int video_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
76 static unsigned int vbi_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
77 static unsigned int radio_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
79 module_param_array(video_nr
, int, NULL
, 0444);
80 module_param_array(vbi_nr
, int, NULL
, 0444);
81 module_param_array(radio_nr
, int, NULL
, 0444);
82 MODULE_PARM_DESC(video_nr
, "video device numbers");
83 MODULE_PARM_DESC(vbi_nr
, "vbi device numbers");
84 MODULE_PARM_DESC(radio_nr
, "radio device numbers");
86 static unsigned int video_debug
;
87 module_param(video_debug
, int, 0644);
88 MODULE_PARM_DESC(video_debug
, "enable debug messages [video]");
90 /* supported video standards */
91 static struct em28xx_fmt format
[] = {
93 .name
= "16bpp YUY2, 4:2:2, packed",
94 .fourcc
= V4L2_PIX_FMT_YUYV
,
96 .reg
= EM28XX_OUTFMT_YUV422_Y0UY1V
,
100 /* supported controls */
101 /* Common to all boards */
102 static struct v4l2_queryctrl em28xx_qctrl
[] = {
104 .id
= V4L2_CID_AUDIO_VOLUME
,
105 .type
= V4L2_CTRL_TYPE_INTEGER
,
110 .default_value
= 0x1f,
113 .id
= V4L2_CID_AUDIO_MUTE
,
114 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
124 /* ------------------------------------------------------------------
125 DMA and thread functions
126 ------------------------------------------------------------------*/
129 * Announces that a buffer were filled and request the next
131 static inline void buffer_filled(struct em28xx
*dev
,
132 struct em28xx_dmaqueue
*dma_q
,
133 struct em28xx_buffer
*buf
)
135 /* Advice that buffer was filled */
136 em28xx_isocdbg("[%p/%d] wakeup\n", buf
, buf
->vb
.i
);
137 buf
->vb
.state
= VIDEOBUF_DONE
;
138 buf
->vb
.field_count
++;
139 do_gettimeofday(&buf
->vb
.ts
);
141 dev
->isoc_ctl
.buf
= NULL
;
143 list_del(&buf
->vb
.queue
);
144 wake_up(&buf
->vb
.done
);
148 * Identify the buffer header type and properly handles
150 static void em28xx_copy_video(struct em28xx
*dev
,
151 struct em28xx_dmaqueue
*dma_q
,
152 struct em28xx_buffer
*buf
,
154 unsigned char *outp
, unsigned long len
)
156 void *fieldstart
, *startwrite
, *startread
;
157 int linesdone
, currlinedone
, offset
, lencopy
, remain
;
158 int bytesperline
= dev
->width
<< 1;
160 if (dma_q
->pos
+ len
> buf
->vb
.size
)
161 len
= buf
->vb
.size
- dma_q
->pos
;
163 if (p
[0] != 0x88 && p
[0] != 0x22) {
164 em28xx_isocdbg("frame is not complete\n");
172 /* Interlaces frame */
176 fieldstart
= outp
+ bytesperline
;
178 linesdone
= dma_q
->pos
/ bytesperline
;
179 currlinedone
= dma_q
->pos
% bytesperline
;
180 offset
= linesdone
* bytesperline
* 2 + currlinedone
;
181 startwrite
= fieldstart
+ offset
;
182 lencopy
= bytesperline
- currlinedone
;
183 lencopy
= lencopy
> remain
? remain
: lencopy
;
185 if ((char *)startwrite
+ lencopy
> (char *)outp
+ buf
->vb
.size
) {
186 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
187 ((char *)startwrite
+ lencopy
) -
188 ((char *)outp
+ buf
->vb
.size
));
189 lencopy
= remain
= (char *)outp
+ buf
->vb
.size
- (char *)startwrite
;
193 memcpy(startwrite
, startread
, lencopy
);
198 startwrite
+= lencopy
+ bytesperline
;
199 startread
+= lencopy
;
200 if (bytesperline
> remain
)
203 lencopy
= bytesperline
;
205 if ((char *)startwrite
+ lencopy
> (char *)outp
+ buf
->vb
.size
) {
206 em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n",
207 ((char *)startwrite
+ lencopy
) -
208 ((char *)outp
+ buf
->vb
.size
));
209 lencopy
= remain
= (char *)outp
+ buf
->vb
.size
-
215 memcpy(startwrite
, startread
, lencopy
);
223 static inline void print_err_status(struct em28xx
*dev
,
224 int packet
, int status
)
226 char *errmsg
= "Unknown";
230 errmsg
= "unlinked synchronuously";
233 errmsg
= "unlinked asynchronuously";
236 errmsg
= "Buffer error (overrun)";
239 errmsg
= "Stalled (device not responding)";
242 errmsg
= "Babble (bad cable?)";
245 errmsg
= "Bit-stuff error (bad cable?)";
248 errmsg
= "CRC/Timeout (could be anything)";
251 errmsg
= "Device does not respond";
255 em28xx_isocdbg("URB status %d [%s].\n", status
, errmsg
);
257 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
258 packet
, status
, errmsg
);
263 * video-buf generic routine to get the next available buffer
265 static inline void get_next_buf(struct em28xx_dmaqueue
*dma_q
,
266 struct em28xx_buffer
**buf
)
268 struct em28xx
*dev
= container_of(dma_q
, struct em28xx
, vidq
);
271 if (list_empty(&dma_q
->active
)) {
272 em28xx_isocdbg("No active queue to serve\n");
273 dev
->isoc_ctl
.buf
= NULL
;
278 /* Get the next buffer */
279 *buf
= list_entry(dma_q
->active
.next
, struct em28xx_buffer
, vb
.queue
);
281 /* Cleans up buffer - Usefull for testing for frame/URB loss */
282 outp
= videobuf_to_vmalloc(&(*buf
)->vb
);
283 memset(outp
, 0, (*buf
)->vb
.size
);
285 dev
->isoc_ctl
.buf
= *buf
;
291 * Controls the isoc copy of each urb packet
293 static inline int em28xx_isoc_copy(struct em28xx
*dev
, struct urb
*urb
)
295 struct em28xx_buffer
*buf
;
296 struct em28xx_dmaqueue
*dma_q
= urb
->context
;
297 unsigned char *outp
= NULL
;
298 int i
, len
= 0, rc
= 1;
304 if ((dev
->state
& DEV_DISCONNECTED
) || (dev
->state
& DEV_MISCONFIGURED
))
307 if (urb
->status
< 0) {
308 print_err_status(dev
, -1, urb
->status
);
309 if (urb
->status
== -ENOENT
)
313 buf
= dev
->isoc_ctl
.buf
;
315 outp
= videobuf_to_vmalloc(&buf
->vb
);
317 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
318 int status
= urb
->iso_frame_desc
[i
].status
;
321 print_err_status(dev
, i
, status
);
322 if (urb
->iso_frame_desc
[i
].status
!= -EPROTO
)
326 len
= urb
->iso_frame_desc
[i
].actual_length
- 4;
328 if (urb
->iso_frame_desc
[i
].actual_length
<= 0) {
329 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
332 if (urb
->iso_frame_desc
[i
].actual_length
>
334 em28xx_isocdbg("packet bigger than packet size");
338 p
= urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
340 /* FIXME: incomplete buffer checks where removed to make
341 logic simpler. Impacts of those changes should be evaluated
343 if (p
[0] == 0x33 && p
[1] == 0x95 && p
[2] == 0x00) {
344 em28xx_isocdbg("VBI HEADER!!!\n");
345 /* FIXME: Should add vbi copy */
348 if (p
[0] == 0x22 && p
[1] == 0x5a) {
349 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p
[2],
350 len
, (p
[2] & 1)? "odd" : "even");
354 buffer_filled(dev
, dma_q
, buf
);
355 get_next_buf(dma_q
, &buf
);
359 outp
= videobuf_to_vmalloc(&buf
->vb
);
372 em28xx_copy_video(dev
, dma_q
, buf
, p
, outp
, len
);
377 /* ------------------------------------------------------------------
379 ------------------------------------------------------------------*/
382 buffer_setup(struct videobuf_queue
*vq
, unsigned int *count
, unsigned int *size
)
384 struct em28xx_fh
*fh
= vq
->priv_data
;
385 struct em28xx
*dev
= fh
->dev
;
386 struct v4l2_frequency f
;
388 *size
= (fh
->dev
->width
* fh
->dev
->height
* dev
->format
->depth
+ 7) >> 3;
391 *count
= EM28XX_DEF_BUF
;
393 if (*count
< EM28XX_MIN_BUF
)
394 *count
= EM28XX_MIN_BUF
;
396 /* Ask tuner to go to analog or radio mode */
397 memset(&f
, 0, sizeof(f
));
398 f
.frequency
= dev
->ctl_freq
;
399 f
.type
= fh
->radio
? V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
401 em28xx_i2c_call_clients(dev
, VIDIOC_S_FREQUENCY
, &f
);
406 /* This is called *without* dev->slock held; please keep it that way */
407 static void free_buffer(struct videobuf_queue
*vq
, struct em28xx_buffer
*buf
)
409 struct em28xx_fh
*fh
= vq
->priv_data
;
410 struct em28xx
*dev
= fh
->dev
;
411 unsigned long flags
= 0;
415 /* We used to wait for the buffer to finish here, but this didn't work
416 because, as we were keeping the state as VIDEOBUF_QUEUED,
417 videobuf_queue_cancel marked it as finished for us.
418 (Also, it could wedge forever if the hardware was misconfigured.)
420 This should be safe; by the time we get here, the buffer isn't
421 queued anymore. If we ever start marking the buffers as
422 VIDEOBUF_ACTIVE, it won't be, though.
424 spin_lock_irqsave(&dev
->slock
, flags
);
425 if (dev
->isoc_ctl
.buf
== buf
)
426 dev
->isoc_ctl
.buf
= NULL
;
427 spin_unlock_irqrestore(&dev
->slock
, flags
);
429 videobuf_vmalloc_free(&buf
->vb
);
430 buf
->vb
.state
= VIDEOBUF_NEEDS_INIT
;
434 buffer_prepare(struct videobuf_queue
*vq
, struct videobuf_buffer
*vb
,
435 enum v4l2_field field
)
437 struct em28xx_fh
*fh
= vq
->priv_data
;
438 struct em28xx_buffer
*buf
= container_of(vb
, struct em28xx_buffer
, vb
);
439 struct em28xx
*dev
= fh
->dev
;
440 int rc
= 0, urb_init
= 0;
442 buf
->vb
.size
= (fh
->dev
->width
* fh
->dev
->height
* dev
->format
->depth
+ 7) >> 3;
444 if (0 != buf
->vb
.baddr
&& buf
->vb
.bsize
< buf
->vb
.size
)
447 buf
->vb
.width
= dev
->width
;
448 buf
->vb
.height
= dev
->height
;
449 buf
->vb
.field
= field
;
451 if (VIDEOBUF_NEEDS_INIT
== buf
->vb
.state
) {
452 rc
= videobuf_iolock(vq
, &buf
->vb
, NULL
);
457 if (!dev
->isoc_ctl
.num_bufs
)
461 rc
= em28xx_init_isoc(dev
, EM28XX_NUM_PACKETS
,
462 EM28XX_NUM_BUFS
, dev
->max_pkt_size
,
468 buf
->vb
.state
= VIDEOBUF_PREPARED
;
472 free_buffer(vq
, buf
);
477 buffer_queue(struct videobuf_queue
*vq
, struct videobuf_buffer
*vb
)
479 struct em28xx_buffer
*buf
= container_of(vb
, struct em28xx_buffer
, vb
);
480 struct em28xx_fh
*fh
= vq
->priv_data
;
481 struct em28xx
*dev
= fh
->dev
;
482 struct em28xx_dmaqueue
*vidq
= &dev
->vidq
;
484 buf
->vb
.state
= VIDEOBUF_QUEUED
;
485 list_add_tail(&buf
->vb
.queue
, &vidq
->active
);
489 static void buffer_release(struct videobuf_queue
*vq
,
490 struct videobuf_buffer
*vb
)
492 struct em28xx_buffer
*buf
= container_of(vb
, struct em28xx_buffer
, vb
);
493 struct em28xx_fh
*fh
= vq
->priv_data
;
494 struct em28xx
*dev
= (struct em28xx
*)fh
->dev
;
496 em28xx_isocdbg("em28xx: called buffer_release\n");
498 free_buffer(vq
, buf
);
501 static struct videobuf_queue_ops em28xx_video_qops
= {
502 .buf_setup
= buffer_setup
,
503 .buf_prepare
= buffer_prepare
,
504 .buf_queue
= buffer_queue
,
505 .buf_release
= buffer_release
,
508 /********************* v4l2 interface **************************************/
510 static void video_mux(struct em28xx
*dev
, int index
)
512 struct v4l2_routing route
;
514 route
.input
= INPUT(index
)->vmux
;
516 dev
->ctl_input
= index
;
517 dev
->ctl_ainput
= INPUT(index
)->amux
;
518 dev
->ctl_aoutput
= INPUT(index
)->aout
;
520 if (!dev
->ctl_aoutput
)
521 dev
->ctl_aoutput
= EM28XX_AOUT_MASTER
;
523 em28xx_i2c_call_clients(dev
, VIDIOC_INT_S_VIDEO_ROUTING
, &route
);
525 if (dev
->board
.has_msp34xx
) {
526 if (dev
->i2s_speed
) {
527 em28xx_i2c_call_clients(dev
, VIDIOC_INT_I2S_CLOCK_FREQ
,
530 route
.input
= dev
->ctl_ainput
;
531 route
.output
= MSP_OUTPUT(MSP_SC_IN_DSP_SCART1
);
532 /* Note: this is msp3400 specific */
533 em28xx_i2c_call_clients(dev
, VIDIOC_INT_S_AUDIO_ROUTING
,
537 em28xx_audio_analog_set(dev
);
540 /* Usage lock check functions */
541 static int res_get(struct em28xx_fh
*fh
)
543 struct em28xx
*dev
= fh
->dev
;
546 /* This instance already has stream_on */
558 static int res_check(struct em28xx_fh
*fh
)
560 return (fh
->stream_on
);
563 static void res_free(struct em28xx_fh
*fh
)
565 struct em28xx
*dev
= fh
->dev
;
573 * return the current saturation, brightness or contrast, mute state
575 static int em28xx_get_ctrl(struct em28xx
*dev
, struct v4l2_control
*ctrl
)
578 case V4L2_CID_AUDIO_MUTE
:
579 ctrl
->value
= dev
->mute
;
581 case V4L2_CID_AUDIO_VOLUME
:
582 ctrl
->value
= dev
->volume
;
591 * mute or set new saturation, brightness or contrast
593 static int em28xx_set_ctrl(struct em28xx
*dev
, const struct v4l2_control
*ctrl
)
596 case V4L2_CID_AUDIO_MUTE
:
597 if (ctrl
->value
!= dev
->mute
) {
598 dev
->mute
= ctrl
->value
;
599 return em28xx_audio_analog_set(dev
);
602 case V4L2_CID_AUDIO_VOLUME
:
603 dev
->volume
= ctrl
->value
;
604 return em28xx_audio_analog_set(dev
);
610 static int check_dev(struct em28xx
*dev
)
612 if (dev
->state
& DEV_DISCONNECTED
) {
613 em28xx_errdev("v4l2 ioctl: device not present\n");
617 if (dev
->state
& DEV_MISCONFIGURED
) {
618 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
619 "close and open it again\n");
625 static void get_scale(struct em28xx
*dev
,
626 unsigned int width
, unsigned int height
,
627 unsigned int *hscale
, unsigned int *vscale
)
629 unsigned int maxw
= norm_maxw(dev
);
630 unsigned int maxh
= norm_maxh(dev
);
632 *hscale
= (((unsigned long)maxw
) << 12) / width
- 4096L;
633 if (*hscale
>= 0x4000)
636 *vscale
= (((unsigned long)maxh
) << 12) / height
- 4096L;
637 if (*vscale
>= 0x4000)
641 /* ------------------------------------------------------------------
642 IOCTL vidioc handling
643 ------------------------------------------------------------------*/
645 static int vidioc_g_fmt_vid_cap(struct file
*file
, void *priv
,
646 struct v4l2_format
*f
)
648 struct em28xx_fh
*fh
= priv
;
649 struct em28xx
*dev
= fh
->dev
;
651 mutex_lock(&dev
->lock
);
653 f
->fmt
.pix
.width
= dev
->width
;
654 f
->fmt
.pix
.height
= dev
->height
;
655 f
->fmt
.pix
.pixelformat
= dev
->format
->fourcc
;
656 f
->fmt
.pix
.bytesperline
= (dev
->width
* dev
->format
->depth
+ 7) >> 3;
657 f
->fmt
.pix
.sizeimage
= f
->fmt
.pix
.bytesperline
* dev
->height
;
658 f
->fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
660 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
661 f
->fmt
.pix
.field
= dev
->interlaced
?
662 V4L2_FIELD_INTERLACED
: V4L2_FIELD_TOP
;
664 mutex_unlock(&dev
->lock
);
668 static struct em28xx_fmt
*format_by_fourcc(unsigned int fourcc
)
672 for (i
= 0; i
< ARRAY_SIZE(format
); i
++)
673 if (format
[i
].fourcc
== fourcc
)
679 static int vidioc_try_fmt_vid_cap(struct file
*file
, void *priv
,
680 struct v4l2_format
*f
)
682 struct em28xx_fh
*fh
= priv
;
683 struct em28xx
*dev
= fh
->dev
;
684 int width
= f
->fmt
.pix
.width
;
685 int height
= f
->fmt
.pix
.height
;
686 unsigned int maxw
= norm_maxw(dev
);
687 unsigned int maxh
= norm_maxh(dev
);
688 unsigned int hscale
, vscale
;
689 struct em28xx_fmt
*fmt
;
691 fmt
= format_by_fourcc(f
->fmt
.pix
.pixelformat
);
693 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
694 f
->fmt
.pix
.pixelformat
);
698 /* width must even because of the YUYV format
699 height must be even because of interlacing */
703 if (unlikely(height
< 32))
705 if (unlikely(height
> maxh
))
707 if (unlikely(width
< 48))
709 if (unlikely(width
> maxw
))
712 if (dev
->board
.is_em2800
) {
713 /* the em2800 can only scale down to 50% */
714 if (height
% (maxh
/ 2))
716 if (width
% (maxw
/ 2))
718 /* according to empiatech support */
719 /* the MaxPacketSize is to small to support */
720 /* framesizes larger than 640x480 @ 30 fps */
721 /* or 640x576 @ 25 fps. As this would cut */
722 /* of a part of the image we prefer */
723 /* 360x576 or 360x480 for now */
724 if (width
== maxw
&& height
== maxh
)
728 get_scale(dev
, width
, height
, &hscale
, &vscale
);
730 width
= (((unsigned long)maxw
) << 12) / (hscale
+ 4096L);
731 height
= (((unsigned long)maxh
) << 12) / (vscale
+ 4096L);
733 f
->fmt
.pix
.width
= width
;
734 f
->fmt
.pix
.height
= height
;
735 f
->fmt
.pix
.pixelformat
= fmt
->fourcc
;
736 f
->fmt
.pix
.bytesperline
= (dev
->width
* fmt
->depth
+ 7) >> 3;
737 f
->fmt
.pix
.sizeimage
= f
->fmt
.pix
.bytesperline
* height
;
738 f
->fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
739 f
->fmt
.pix
.field
= V4L2_FIELD_INTERLACED
;
744 static int vidioc_s_fmt_vid_cap(struct file
*file
, void *priv
,
745 struct v4l2_format
*f
)
747 struct em28xx_fh
*fh
= priv
;
748 struct em28xx
*dev
= fh
->dev
;
750 struct em28xx_fmt
*fmt
;
756 mutex_lock(&dev
->lock
);
758 vidioc_try_fmt_vid_cap(file
, priv
, f
);
760 fmt
= format_by_fourcc(f
->fmt
.pix
.pixelformat
);
766 if (videobuf_queue_is_busy(&fh
->vb_vidq
)) {
767 em28xx_errdev("%s queue busy\n", __func__
);
772 if (dev
->stream_on
&& !fh
->stream_on
) {
773 em28xx_errdev("%s device in use by another fh\n", __func__
);
778 /* set new image size */
779 dev
->width
= f
->fmt
.pix
.width
;
780 dev
->height
= f
->fmt
.pix
.height
;
782 get_scale(dev
, dev
->width
, dev
->height
, &dev
->hscale
, &dev
->vscale
);
784 em28xx_set_alternate(dev
);
785 em28xx_resolution_set(dev
);
790 mutex_unlock(&dev
->lock
);
794 static int vidioc_s_std(struct file
*file
, void *priv
, v4l2_std_id
* norm
)
796 struct em28xx_fh
*fh
= priv
;
797 struct em28xx
*dev
= fh
->dev
;
798 struct v4l2_format f
;
805 mutex_lock(&dev
->lock
);
808 /* Adjusts width/height, if needed */
809 f
.fmt
.pix
.width
= dev
->width
;
810 f
.fmt
.pix
.height
= dev
->height
;
811 vidioc_try_fmt_vid_cap(file
, priv
, &f
);
813 /* set new image size */
814 dev
->width
= f
.fmt
.pix
.width
;
815 dev
->height
= f
.fmt
.pix
.height
;
816 get_scale(dev
, dev
->width
, dev
->height
, &dev
->hscale
, &dev
->vscale
);
818 em28xx_resolution_set(dev
);
819 em28xx_i2c_call_clients(dev
, VIDIOC_S_STD
, &dev
->norm
);
821 mutex_unlock(&dev
->lock
);
825 static const char *iname
[] = {
826 [EM28XX_VMUX_COMPOSITE1
] = "Composite1",
827 [EM28XX_VMUX_COMPOSITE2
] = "Composite2",
828 [EM28XX_VMUX_COMPOSITE3
] = "Composite3",
829 [EM28XX_VMUX_COMPOSITE4
] = "Composite4",
830 [EM28XX_VMUX_SVIDEO
] = "S-Video",
831 [EM28XX_VMUX_TELEVISION
] = "Television",
832 [EM28XX_VMUX_CABLE
] = "Cable TV",
833 [EM28XX_VMUX_DVB
] = "DVB",
834 [EM28XX_VMUX_DEBUG
] = "for debug only",
837 static int vidioc_enum_input(struct file
*file
, void *priv
,
838 struct v4l2_input
*i
)
840 struct em28xx_fh
*fh
= priv
;
841 struct em28xx
*dev
= fh
->dev
;
845 if (n
>= MAX_EM28XX_INPUT
)
847 if (0 == INPUT(n
)->type
)
851 i
->type
= V4L2_INPUT_TYPE_CAMERA
;
853 strcpy(i
->name
, iname
[INPUT(n
)->type
]);
855 if ((EM28XX_VMUX_TELEVISION
== INPUT(n
)->type
) ||
856 (EM28XX_VMUX_CABLE
== INPUT(n
)->type
))
857 i
->type
= V4L2_INPUT_TYPE_TUNER
;
859 i
->std
= dev
->vdev
->tvnorms
;
864 static int vidioc_g_input(struct file
*file
, void *priv
, unsigned int *i
)
866 struct em28xx_fh
*fh
= priv
;
867 struct em28xx
*dev
= fh
->dev
;
874 static int vidioc_s_input(struct file
*file
, void *priv
, unsigned int i
)
876 struct em28xx_fh
*fh
= priv
;
877 struct em28xx
*dev
= fh
->dev
;
884 if (i
>= MAX_EM28XX_INPUT
)
886 if (0 == INPUT(i
)->type
)
891 mutex_lock(&dev
->lock
);
892 video_mux(dev
, dev
->ctl_input
);
893 mutex_unlock(&dev
->lock
);
897 static int vidioc_g_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
899 struct em28xx_fh
*fh
= priv
;
900 struct em28xx
*dev
= fh
->dev
;
903 case EM28XX_AMUX_VIDEO
:
904 strcpy(a
->name
, "Television");
906 case EM28XX_AMUX_LINE_IN
:
907 strcpy(a
->name
, "Line In");
909 case EM28XX_AMUX_VIDEO2
:
910 strcpy(a
->name
, "Television alt");
912 case EM28XX_AMUX_PHONE
:
913 strcpy(a
->name
, "Phone");
915 case EM28XX_AMUX_MIC
:
916 strcpy(a
->name
, "Mic");
919 strcpy(a
->name
, "CD");
921 case EM28XX_AMUX_AUX
:
922 strcpy(a
->name
, "Aux");
924 case EM28XX_AMUX_PCM_OUT
:
925 strcpy(a
->name
, "PCM");
931 a
->index
= dev
->ctl_ainput
;
932 a
->capability
= V4L2_AUDCAP_STEREO
;
937 static int vidioc_s_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
939 struct em28xx_fh
*fh
= priv
;
940 struct em28xx
*dev
= fh
->dev
;
943 if (a
->index
>= MAX_EM28XX_INPUT
)
945 if (0 == INPUT(a
->index
)->type
)
948 mutex_lock(&dev
->lock
);
950 dev
->ctl_ainput
= INPUT(a
->index
)->amux
;
951 dev
->ctl_aoutput
= INPUT(a
->index
)->aout
;
953 if (!dev
->ctl_aoutput
)
954 dev
->ctl_aoutput
= EM28XX_AOUT_MASTER
;
956 mutex_unlock(&dev
->lock
);
960 static int vidioc_queryctrl(struct file
*file
, void *priv
,
961 struct v4l2_queryctrl
*qc
)
963 struct em28xx_fh
*fh
= priv
;
964 struct em28xx
*dev
= fh
->dev
;
973 memset(qc
, 0, sizeof(*qc
));
977 if (!dev
->board
.has_msp34xx
) {
978 for (i
= 0; i
< ARRAY_SIZE(em28xx_qctrl
); i
++) {
979 if (qc
->id
&& qc
->id
== em28xx_qctrl
[i
].id
) {
980 memcpy(qc
, &(em28xx_qctrl
[i
]), sizeof(*qc
));
985 mutex_lock(&dev
->lock
);
986 em28xx_i2c_call_clients(dev
, VIDIOC_QUERYCTRL
, qc
);
987 mutex_unlock(&dev
->lock
);
995 static int vidioc_g_ctrl(struct file
*file
, void *priv
,
996 struct v4l2_control
*ctrl
)
998 struct em28xx_fh
*fh
= priv
;
999 struct em28xx
*dev
= fh
->dev
;
1002 rc
= check_dev(dev
);
1007 mutex_lock(&dev
->lock
);
1009 if (dev
->board
.has_msp34xx
)
1010 em28xx_i2c_call_clients(dev
, VIDIOC_G_CTRL
, ctrl
);
1012 rc
= em28xx_get_ctrl(dev
, ctrl
);
1014 mutex_unlock(&dev
->lock
);
1018 static int vidioc_s_ctrl(struct file
*file
, void *priv
,
1019 struct v4l2_control
*ctrl
)
1021 struct em28xx_fh
*fh
= priv
;
1022 struct em28xx
*dev
= fh
->dev
;
1026 rc
= check_dev(dev
);
1030 mutex_lock(&dev
->lock
);
1032 if (dev
->board
.has_msp34xx
)
1033 em28xx_i2c_call_clients(dev
, VIDIOC_S_CTRL
, ctrl
);
1036 for (i
= 0; i
< ARRAY_SIZE(em28xx_qctrl
); i
++) {
1037 if (ctrl
->id
== em28xx_qctrl
[i
].id
) {
1038 if (ctrl
->value
< em28xx_qctrl
[i
].minimum
||
1039 ctrl
->value
> em28xx_qctrl
[i
].maximum
) {
1044 rc
= em28xx_set_ctrl(dev
, ctrl
);
1050 /* Control not found - try to send it to the attached devices */
1052 em28xx_i2c_call_clients(dev
, VIDIOC_S_CTRL
, ctrl
);
1056 mutex_unlock(&dev
->lock
);
1060 static int vidioc_g_tuner(struct file
*file
, void *priv
,
1061 struct v4l2_tuner
*t
)
1063 struct em28xx_fh
*fh
= priv
;
1064 struct em28xx
*dev
= fh
->dev
;
1067 rc
= check_dev(dev
);
1074 strcpy(t
->name
, "Tuner");
1076 mutex_lock(&dev
->lock
);
1078 em28xx_i2c_call_clients(dev
, VIDIOC_G_TUNER
, t
);
1080 mutex_unlock(&dev
->lock
);
1084 static int vidioc_s_tuner(struct file
*file
, void *priv
,
1085 struct v4l2_tuner
*t
)
1087 struct em28xx_fh
*fh
= priv
;
1088 struct em28xx
*dev
= fh
->dev
;
1091 rc
= check_dev(dev
);
1098 mutex_lock(&dev
->lock
);
1100 em28xx_i2c_call_clients(dev
, VIDIOC_S_TUNER
, t
);
1102 mutex_unlock(&dev
->lock
);
1106 static int vidioc_g_frequency(struct file
*file
, void *priv
,
1107 struct v4l2_frequency
*f
)
1109 struct em28xx_fh
*fh
= priv
;
1110 struct em28xx
*dev
= fh
->dev
;
1112 mutex_lock(&dev
->lock
);
1113 f
->type
= fh
->radio
? V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1114 f
->frequency
= dev
->ctl_freq
;
1115 mutex_unlock(&dev
->lock
);
1120 static int vidioc_s_frequency(struct file
*file
, void *priv
,
1121 struct v4l2_frequency
*f
)
1123 struct em28xx_fh
*fh
= priv
;
1124 struct em28xx
*dev
= fh
->dev
;
1127 rc
= check_dev(dev
);
1134 if (unlikely(0 == fh
->radio
&& f
->type
!= V4L2_TUNER_ANALOG_TV
))
1136 if (unlikely(1 == fh
->radio
&& f
->type
!= V4L2_TUNER_RADIO
))
1139 mutex_lock(&dev
->lock
);
1141 dev
->ctl_freq
= f
->frequency
;
1142 em28xx_i2c_call_clients(dev
, VIDIOC_S_FREQUENCY
, f
);
1144 mutex_unlock(&dev
->lock
);
1149 #ifdef CONFIG_VIDEO_ADV_DEBUG
1150 static int em28xx_reg_len(int reg
)
1153 case EM28XX_R40_AC97LSB
:
1154 case EM28XX_R30_HSCALELOW
:
1155 case EM28XX_R32_VSCALELOW
:
1162 static int vidioc_g_chip_ident(struct file
*file
, void *priv
,
1163 struct v4l2_dbg_chip_ident
*chip
)
1165 struct em28xx_fh
*fh
= priv
;
1166 struct em28xx
*dev
= fh
->dev
;
1168 chip
->ident
= V4L2_IDENT_NONE
;
1171 em28xx_i2c_call_clients(dev
, VIDIOC_DBG_G_CHIP_IDENT
, chip
);
1177 static int vidioc_g_register(struct file
*file
, void *priv
,
1178 struct v4l2_dbg_register
*reg
)
1180 struct em28xx_fh
*fh
= priv
;
1181 struct em28xx
*dev
= fh
->dev
;
1184 switch (reg
->match
.type
) {
1185 case V4L2_CHIP_MATCH_AC97
:
1186 mutex_lock(&dev
->lock
);
1187 ret
= em28xx_read_ac97(dev
, reg
->reg
);
1188 mutex_unlock(&dev
->lock
);
1195 case V4L2_CHIP_MATCH_I2C_DRIVER
:
1196 em28xx_i2c_call_clients(dev
, VIDIOC_DBG_G_REGISTER
, reg
);
1198 case V4L2_CHIP_MATCH_I2C_ADDR
:
1199 /* Not supported yet */
1202 if (!v4l2_chip_match_host(®
->match
))
1207 reg
->size
= em28xx_reg_len(reg
->reg
);
1208 if (reg
->size
== 1) {
1209 mutex_lock(&dev
->lock
);
1210 ret
= em28xx_read_reg(dev
, reg
->reg
);
1211 mutex_unlock(&dev
->lock
);
1219 mutex_lock(&dev
->lock
);
1220 ret
= em28xx_read_reg_req_len(dev
, USB_REQ_GET_STATUS
,
1221 reg
->reg
, (char *)&val
, 2);
1222 mutex_unlock(&dev
->lock
);
1226 reg
->val
= le16_to_cpu(val
);
1232 static int vidioc_s_register(struct file
*file
, void *priv
,
1233 struct v4l2_dbg_register
*reg
)
1235 struct em28xx_fh
*fh
= priv
;
1236 struct em28xx
*dev
= fh
->dev
;
1240 switch (reg
->match
.type
) {
1241 case V4L2_CHIP_MATCH_AC97
:
1242 mutex_lock(&dev
->lock
);
1243 rc
= em28xx_write_ac97(dev
, reg
->reg
, reg
->val
);
1244 mutex_unlock(&dev
->lock
);
1247 case V4L2_CHIP_MATCH_I2C_DRIVER
:
1248 em28xx_i2c_call_clients(dev
, VIDIOC_DBG_S_REGISTER
, reg
);
1250 case V4L2_CHIP_MATCH_I2C_ADDR
:
1251 /* Not supported yet */
1254 if (!v4l2_chip_match_host(®
->match
))
1259 buf
= cpu_to_le16(reg
->val
);
1261 mutex_lock(&dev
->lock
);
1262 rc
= em28xx_write_regs(dev
, reg
->reg
, (char *)&buf
,
1263 em28xx_reg_len(reg
->reg
));
1264 mutex_unlock(&dev
->lock
);
1271 static int vidioc_cropcap(struct file
*file
, void *priv
,
1272 struct v4l2_cropcap
*cc
)
1274 struct em28xx_fh
*fh
= priv
;
1275 struct em28xx
*dev
= fh
->dev
;
1277 if (cc
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1280 cc
->bounds
.left
= 0;
1282 cc
->bounds
.width
= dev
->width
;
1283 cc
->bounds
.height
= dev
->height
;
1284 cc
->defrect
= cc
->bounds
;
1285 cc
->pixelaspect
.numerator
= 54; /* 4:3 FIXME: remove magic numbers */
1286 cc
->pixelaspect
.denominator
= 59;
1291 static int vidioc_streamon(struct file
*file
, void *priv
,
1292 enum v4l2_buf_type type
)
1294 struct em28xx_fh
*fh
= priv
;
1295 struct em28xx
*dev
= fh
->dev
;
1298 rc
= check_dev(dev
);
1303 mutex_lock(&dev
->lock
);
1306 if (likely(rc
>= 0))
1307 rc
= videobuf_streamon(&fh
->vb_vidq
);
1309 mutex_unlock(&dev
->lock
);
1314 static int vidioc_streamoff(struct file
*file
, void *priv
,
1315 enum v4l2_buf_type type
)
1317 struct em28xx_fh
*fh
= priv
;
1318 struct em28xx
*dev
= fh
->dev
;
1321 rc
= check_dev(dev
);
1325 if (fh
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1327 if (type
!= fh
->type
)
1330 mutex_lock(&dev
->lock
);
1332 videobuf_streamoff(&fh
->vb_vidq
);
1335 mutex_unlock(&dev
->lock
);
1340 static int vidioc_querycap(struct file
*file
, void *priv
,
1341 struct v4l2_capability
*cap
)
1343 struct em28xx_fh
*fh
= priv
;
1344 struct em28xx
*dev
= fh
->dev
;
1346 strlcpy(cap
->driver
, "em28xx", sizeof(cap
->driver
));
1347 strlcpy(cap
->card
, em28xx_boards
[dev
->model
].name
, sizeof(cap
->card
));
1348 strlcpy(cap
->bus_info
, dev_name(&dev
->udev
->dev
), sizeof(cap
->bus_info
));
1350 cap
->version
= EM28XX_VERSION_CODE
;
1353 V4L2_CAP_SLICED_VBI_CAPTURE
|
1354 V4L2_CAP_VIDEO_CAPTURE
|
1356 V4L2_CAP_READWRITE
| V4L2_CAP_STREAMING
;
1358 if (dev
->tuner_type
!= TUNER_ABSENT
)
1359 cap
->capabilities
|= V4L2_CAP_TUNER
;
1364 static int vidioc_enum_fmt_vid_cap(struct file
*file
, void *priv
,
1365 struct v4l2_fmtdesc
*f
)
1367 if (unlikely(f
->index
>= ARRAY_SIZE(format
)))
1370 strlcpy(f
->description
, format
[f
->index
].name
, sizeof(f
->description
));
1371 f
->pixelformat
= format
[f
->index
].fourcc
;
1376 /* Sliced VBI ioctls */
1377 static int vidioc_g_fmt_sliced_vbi_cap(struct file
*file
, void *priv
,
1378 struct v4l2_format
*f
)
1380 struct em28xx_fh
*fh
= priv
;
1381 struct em28xx
*dev
= fh
->dev
;
1384 rc
= check_dev(dev
);
1388 mutex_lock(&dev
->lock
);
1390 f
->fmt
.sliced
.service_set
= 0;
1392 em28xx_i2c_call_clients(dev
, VIDIOC_G_FMT
, f
);
1394 if (f
->fmt
.sliced
.service_set
== 0)
1397 mutex_unlock(&dev
->lock
);
1401 static int vidioc_try_set_sliced_vbi_cap(struct file
*file
, void *priv
,
1402 struct v4l2_format
*f
)
1404 struct em28xx_fh
*fh
= priv
;
1405 struct em28xx
*dev
= fh
->dev
;
1408 rc
= check_dev(dev
);
1412 mutex_lock(&dev
->lock
);
1413 em28xx_i2c_call_clients(dev
, VIDIOC_G_FMT
, f
);
1414 mutex_unlock(&dev
->lock
);
1416 if (f
->fmt
.sliced
.service_set
== 0)
1423 static int vidioc_reqbufs(struct file
*file
, void *priv
,
1424 struct v4l2_requestbuffers
*rb
)
1426 struct em28xx_fh
*fh
= priv
;
1427 struct em28xx
*dev
= fh
->dev
;
1430 rc
= check_dev(dev
);
1434 return (videobuf_reqbufs(&fh
->vb_vidq
, rb
));
1437 static int vidioc_querybuf(struct file
*file
, void *priv
,
1438 struct v4l2_buffer
*b
)
1440 struct em28xx_fh
*fh
= priv
;
1441 struct em28xx
*dev
= fh
->dev
;
1444 rc
= check_dev(dev
);
1448 return (videobuf_querybuf(&fh
->vb_vidq
, b
));
1451 static int vidioc_qbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*b
)
1453 struct em28xx_fh
*fh
= priv
;
1454 struct em28xx
*dev
= fh
->dev
;
1457 rc
= check_dev(dev
);
1461 return (videobuf_qbuf(&fh
->vb_vidq
, b
));
1464 static int vidioc_dqbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*b
)
1466 struct em28xx_fh
*fh
= priv
;
1467 struct em28xx
*dev
= fh
->dev
;
1470 rc
= check_dev(dev
);
1474 return (videobuf_dqbuf(&fh
->vb_vidq
, b
,
1475 file
->f_flags
& O_NONBLOCK
));
1478 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1479 static int vidiocgmbuf(struct file
*file
, void *priv
, struct video_mbuf
*mbuf
)
1481 struct em28xx_fh
*fh
= priv
;
1483 return videobuf_cgmbuf(&fh
->vb_vidq
, mbuf
, 8);
1488 /* ----------------------------------------------------------- */
1489 /* RADIO ESPECIFIC IOCTLS */
1490 /* ----------------------------------------------------------- */
1492 static int radio_querycap(struct file
*file
, void *priv
,
1493 struct v4l2_capability
*cap
)
1495 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
1497 strlcpy(cap
->driver
, "em28xx", sizeof(cap
->driver
));
1498 strlcpy(cap
->card
, em28xx_boards
[dev
->model
].name
, sizeof(cap
->card
));
1499 strlcpy(cap
->bus_info
, dev_name(&dev
->udev
->dev
), sizeof(cap
->bus_info
));
1501 cap
->version
= EM28XX_VERSION_CODE
;
1502 cap
->capabilities
= V4L2_CAP_TUNER
;
1506 static int radio_g_tuner(struct file
*file
, void *priv
,
1507 struct v4l2_tuner
*t
)
1509 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
1511 if (unlikely(t
->index
> 0))
1514 strcpy(t
->name
, "Radio");
1515 t
->type
= V4L2_TUNER_RADIO
;
1517 mutex_lock(&dev
->lock
);
1518 em28xx_i2c_call_clients(dev
, VIDIOC_G_TUNER
, t
);
1519 mutex_unlock(&dev
->lock
);
1524 static int radio_enum_input(struct file
*file
, void *priv
,
1525 struct v4l2_input
*i
)
1529 strcpy(i
->name
, "Radio");
1530 i
->type
= V4L2_INPUT_TYPE_TUNER
;
1535 static int radio_g_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
1537 if (unlikely(a
->index
))
1540 strcpy(a
->name
, "Radio");
1544 static int radio_s_tuner(struct file
*file
, void *priv
,
1545 struct v4l2_tuner
*t
)
1547 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
1552 mutex_lock(&dev
->lock
);
1553 em28xx_i2c_call_clients(dev
, VIDIOC_S_TUNER
, t
);
1554 mutex_unlock(&dev
->lock
);
1559 static int radio_s_audio(struct file
*file
, void *fh
,
1560 struct v4l2_audio
*a
)
1565 static int radio_s_input(struct file
*file
, void *fh
, unsigned int i
)
1570 static int radio_queryctrl(struct file
*file
, void *priv
,
1571 struct v4l2_queryctrl
*qc
)
1575 if (qc
->id
< V4L2_CID_BASE
||
1576 qc
->id
>= V4L2_CID_LASTP1
)
1579 for (i
= 0; i
< ARRAY_SIZE(em28xx_qctrl
); i
++) {
1580 if (qc
->id
&& qc
->id
== em28xx_qctrl
[i
].id
) {
1581 memcpy(qc
, &(em28xx_qctrl
[i
]), sizeof(*qc
));
1590 * em28xx_v4l2_open()
1591 * inits the device and starts isoc transfer
1593 static int em28xx_v4l2_open(struct file
*filp
)
1595 int minor
= video_devdata(filp
)->minor
;
1596 int errCode
= 0, radio
;
1598 enum v4l2_buf_type fh_type
;
1599 struct em28xx_fh
*fh
;
1601 dev
= em28xx_get_device(minor
, &fh_type
, &radio
);
1606 mutex_lock(&dev
->lock
);
1608 em28xx_videodbg("open minor=%d type=%s users=%d\n",
1609 minor
, v4l2_type_names
[fh_type
], dev
->users
);
1612 fh
= kzalloc(sizeof(struct em28xx_fh
), GFP_KERNEL
);
1614 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
1615 mutex_unlock(&dev
->lock
);
1621 filp
->private_data
= fh
;
1623 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& dev
->users
== 0) {
1624 dev
->width
= norm_maxw(dev
);
1625 dev
->height
= norm_maxh(dev
);
1629 em28xx_set_mode(dev
, EM28XX_ANALOG_MODE
);
1630 em28xx_set_alternate(dev
);
1631 em28xx_resolution_set(dev
);
1633 /* Needed, since GPIO might have disabled power of
1636 em28xx_wake_i2c(dev
);
1640 em28xx_videodbg("video_open: setting radio device\n");
1641 em28xx_i2c_call_clients(dev
, AUDC_SET_RADIO
, NULL
);
1646 videobuf_queue_vmalloc_init(&fh
->vb_vidq
, &em28xx_video_qops
,
1647 NULL
, &dev
->slock
, fh
->type
, V4L2_FIELD_INTERLACED
,
1648 sizeof(struct em28xx_buffer
), fh
);
1650 mutex_unlock(&dev
->lock
);
1656 * em28xx_realease_resources()
1657 * unregisters the v4l2,i2c and usb devices
1658 * called when the device gets disconected or at module unload
1660 void em28xx_release_analog_resources(struct em28xx
*dev
)
1663 /*FIXME: I2C IR should be disconnected */
1665 if (dev
->radio_dev
) {
1666 if (-1 != dev
->radio_dev
->minor
)
1667 video_unregister_device(dev
->radio_dev
);
1669 video_device_release(dev
->radio_dev
);
1670 dev
->radio_dev
= NULL
;
1673 em28xx_info("V4L2 device /dev/vbi%d deregistered\n",
1675 if (-1 != dev
->vbi_dev
->minor
)
1676 video_unregister_device(dev
->vbi_dev
);
1678 video_device_release(dev
->vbi_dev
);
1679 dev
->vbi_dev
= NULL
;
1682 em28xx_info("V4L2 device /dev/video%d deregistered\n",
1684 if (-1 != dev
->vdev
->minor
)
1685 video_unregister_device(dev
->vdev
);
1687 video_device_release(dev
->vdev
);
1693 * em28xx_v4l2_close()
1694 * stops streaming and deallocates all resources allocated by the v4l2
1697 static int em28xx_v4l2_close(struct file
*filp
)
1699 struct em28xx_fh
*fh
= filp
->private_data
;
1700 struct em28xx
*dev
= fh
->dev
;
1703 em28xx_videodbg("users=%d\n", dev
->users
);
1706 mutex_lock(&dev
->lock
);
1710 if (dev
->users
== 1) {
1711 videobuf_stop(&fh
->vb_vidq
);
1712 videobuf_mmap_free(&fh
->vb_vidq
);
1714 /* the device is already disconnect,
1715 free the remaining resources */
1716 if (dev
->state
& DEV_DISCONNECTED
) {
1717 em28xx_release_resources(dev
);
1718 mutex_unlock(&dev
->lock
);
1723 /* Save some power by putting tuner to sleep */
1724 em28xx_i2c_call_clients(dev
, TUNER_SET_STANDBY
, NULL
);
1726 /* do this before setting alternate! */
1727 em28xx_uninit_isoc(dev
);
1728 em28xx_set_mode(dev
, EM28XX_SUSPEND
);
1730 /* set alternate 0 */
1732 em28xx_videodbg("setting alternate 0\n");
1733 errCode
= usb_set_interface(dev
->udev
, 0, 0);
1735 em28xx_errdev("cannot change alternate number to "
1736 "0 (error=%i)\n", errCode
);
1741 wake_up_interruptible_nr(&dev
->open
, 1);
1742 mutex_unlock(&dev
->lock
);
1747 * em28xx_v4l2_read()
1748 * will allocate buffers when called for the first time
1751 em28xx_v4l2_read(struct file
*filp
, char __user
*buf
, size_t count
,
1754 struct em28xx_fh
*fh
= filp
->private_data
;
1755 struct em28xx
*dev
= fh
->dev
;
1758 rc
= check_dev(dev
);
1762 /* FIXME: read() is not prepared to allow changing the video
1763 resolution while streaming. Seems a bug at em28xx_set_fmt
1766 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1767 mutex_lock(&dev
->lock
);
1769 mutex_unlock(&dev
->lock
);
1771 if (unlikely(rc
< 0))
1774 return videobuf_read_stream(&fh
->vb_vidq
, buf
, count
, pos
, 0,
1775 filp
->f_flags
& O_NONBLOCK
);
1781 * em28xx_v4l2_poll()
1782 * will allocate buffers when called for the first time
1784 static unsigned int em28xx_v4l2_poll(struct file
*filp
, poll_table
* wait
)
1786 struct em28xx_fh
*fh
= filp
->private_data
;
1787 struct em28xx
*dev
= fh
->dev
;
1790 rc
= check_dev(dev
);
1794 mutex_lock(&dev
->lock
);
1796 mutex_unlock(&dev
->lock
);
1798 if (unlikely(rc
< 0))
1801 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= fh
->type
)
1804 return videobuf_poll_stream(filp
, &fh
->vb_vidq
, wait
);
1808 * em28xx_v4l2_mmap()
1810 static int em28xx_v4l2_mmap(struct file
*filp
, struct vm_area_struct
*vma
)
1812 struct em28xx_fh
*fh
= filp
->private_data
;
1813 struct em28xx
*dev
= fh
->dev
;
1816 rc
= check_dev(dev
);
1820 mutex_lock(&dev
->lock
);
1822 mutex_unlock(&dev
->lock
);
1824 if (unlikely(rc
< 0))
1827 rc
= videobuf_mmap_mapper(&fh
->vb_vidq
, vma
);
1829 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
1830 (unsigned long)vma
->vm_start
,
1831 (unsigned long)vma
->vm_end
-(unsigned long)vma
->vm_start
,
1837 static const struct v4l2_file_operations em28xx_v4l_fops
= {
1838 .owner
= THIS_MODULE
,
1839 .open
= em28xx_v4l2_open
,
1840 .release
= em28xx_v4l2_close
,
1841 .read
= em28xx_v4l2_read
,
1842 .poll
= em28xx_v4l2_poll
,
1843 .mmap
= em28xx_v4l2_mmap
,
1844 .ioctl
= video_ioctl2
,
1847 static const struct v4l2_ioctl_ops video_ioctl_ops
= {
1848 .vidioc_querycap
= vidioc_querycap
,
1849 .vidioc_enum_fmt_vid_cap
= vidioc_enum_fmt_vid_cap
,
1850 .vidioc_g_fmt_vid_cap
= vidioc_g_fmt_vid_cap
,
1851 .vidioc_try_fmt_vid_cap
= vidioc_try_fmt_vid_cap
,
1852 .vidioc_s_fmt_vid_cap
= vidioc_s_fmt_vid_cap
,
1853 .vidioc_g_audio
= vidioc_g_audio
,
1854 .vidioc_s_audio
= vidioc_s_audio
,
1855 .vidioc_cropcap
= vidioc_cropcap
,
1857 .vidioc_g_fmt_sliced_vbi_cap
= vidioc_g_fmt_sliced_vbi_cap
,
1858 .vidioc_try_fmt_sliced_vbi_cap
= vidioc_try_set_sliced_vbi_cap
,
1859 .vidioc_s_fmt_sliced_vbi_cap
= vidioc_try_set_sliced_vbi_cap
,
1861 .vidioc_reqbufs
= vidioc_reqbufs
,
1862 .vidioc_querybuf
= vidioc_querybuf
,
1863 .vidioc_qbuf
= vidioc_qbuf
,
1864 .vidioc_dqbuf
= vidioc_dqbuf
,
1865 .vidioc_s_std
= vidioc_s_std
,
1866 .vidioc_enum_input
= vidioc_enum_input
,
1867 .vidioc_g_input
= vidioc_g_input
,
1868 .vidioc_s_input
= vidioc_s_input
,
1869 .vidioc_queryctrl
= vidioc_queryctrl
,
1870 .vidioc_g_ctrl
= vidioc_g_ctrl
,
1871 .vidioc_s_ctrl
= vidioc_s_ctrl
,
1872 .vidioc_streamon
= vidioc_streamon
,
1873 .vidioc_streamoff
= vidioc_streamoff
,
1874 .vidioc_g_tuner
= vidioc_g_tuner
,
1875 .vidioc_s_tuner
= vidioc_s_tuner
,
1876 .vidioc_g_frequency
= vidioc_g_frequency
,
1877 .vidioc_s_frequency
= vidioc_s_frequency
,
1878 #ifdef CONFIG_VIDEO_ADV_DEBUG
1879 .vidioc_g_register
= vidioc_g_register
,
1880 .vidioc_s_register
= vidioc_s_register
,
1881 .vidioc_g_chip_ident
= vidioc_g_chip_ident
,
1883 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1884 .vidiocgmbuf
= vidiocgmbuf
,
1888 static const struct video_device em28xx_video_template
= {
1889 .fops
= &em28xx_v4l_fops
,
1890 .release
= video_device_release
,
1891 .ioctl_ops
= &video_ioctl_ops
,
1895 .tvnorms
= V4L2_STD_ALL
,
1896 .current_norm
= V4L2_STD_PAL
,
1899 static const struct v4l2_file_operations radio_fops
= {
1900 .owner
= THIS_MODULE
,
1901 .open
= em28xx_v4l2_open
,
1902 .release
= em28xx_v4l2_close
,
1903 .ioctl
= video_ioctl2
,
1906 static const struct v4l2_ioctl_ops radio_ioctl_ops
= {
1907 .vidioc_querycap
= radio_querycap
,
1908 .vidioc_g_tuner
= radio_g_tuner
,
1909 .vidioc_enum_input
= radio_enum_input
,
1910 .vidioc_g_audio
= radio_g_audio
,
1911 .vidioc_s_tuner
= radio_s_tuner
,
1912 .vidioc_s_audio
= radio_s_audio
,
1913 .vidioc_s_input
= radio_s_input
,
1914 .vidioc_queryctrl
= radio_queryctrl
,
1915 .vidioc_g_ctrl
= vidioc_g_ctrl
,
1916 .vidioc_s_ctrl
= vidioc_s_ctrl
,
1917 .vidioc_g_frequency
= vidioc_g_frequency
,
1918 .vidioc_s_frequency
= vidioc_s_frequency
,
1919 #ifdef CONFIG_VIDEO_ADV_DEBUG
1920 .vidioc_g_register
= vidioc_g_register
,
1921 .vidioc_s_register
= vidioc_s_register
,
1925 static struct video_device em28xx_radio_template
= {
1926 .name
= "em28xx-radio",
1927 .fops
= &radio_fops
,
1928 .ioctl_ops
= &radio_ioctl_ops
,
1932 /******************************** usb interface ******************************/
1936 static struct video_device
*em28xx_vdev_init(struct em28xx
*dev
,
1937 const struct video_device
*template,
1938 const char *type_name
)
1940 struct video_device
*vfd
;
1942 vfd
= video_device_alloc();
1947 vfd
->parent
= &dev
->udev
->dev
;
1948 vfd
->release
= video_device_release
;
1949 vfd
->debug
= video_debug
;
1951 snprintf(vfd
->name
, sizeof(vfd
->name
), "%s %s",
1952 dev
->name
, type_name
);
1957 int em28xx_register_analog_devices(struct em28xx
*dev
)
1962 printk(KERN_INFO
"%s: v4l2 driver version %d.%d.%d\n",
1964 (EM28XX_VERSION_CODE
>> 16) & 0xff,
1965 (EM28XX_VERSION_CODE
>> 8) & 0xff, EM28XX_VERSION_CODE
& 0xff);
1967 /* set default norm */
1968 dev
->norm
= em28xx_video_template
.current_norm
;
1969 dev
->width
= norm_maxw(dev
);
1970 dev
->height
= norm_maxh(dev
);
1971 dev
->interlaced
= EM28XX_INTERLACED_DEFAULT
;
1976 /* Analog specific initialization */
1977 dev
->format
= &format
[0];
1978 video_mux(dev
, dev
->ctl_input
);
1980 /* Audio defaults */
1984 /* enable vbi capturing */
1986 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
1987 val
= (u8
)em28xx_read_reg(dev
, EM28XX_R0F_XCLK
);
1988 em28xx_write_reg(dev
, EM28XX_R0F_XCLK
, (EM28XX_XCLK_AUDIO_UNMUTE
| val
));
1989 em28xx_write_reg(dev
, EM28XX_R11_VINCTRL
, 0x51);
1991 em28xx_set_outfmt(dev
);
1992 em28xx_colorlevels_set_default(dev
);
1993 em28xx_compression_disable(dev
);
1995 /* allocate and fill video video_device struct */
1996 dev
->vdev
= em28xx_vdev_init(dev
, &em28xx_video_template
, "video");
1998 em28xx_errdev("cannot allocate video_device.\n");
2002 /* register v4l2 video video_device */
2003 ret
= video_register_device(dev
->vdev
, VFL_TYPE_GRABBER
,
2004 video_nr
[dev
->devno
]);
2006 em28xx_errdev("unable to register video device (error=%i).\n",
2011 /* Allocate and fill vbi video_device struct */
2012 dev
->vbi_dev
= em28xx_vdev_init(dev
, &em28xx_video_template
, "vbi");
2014 /* register v4l2 vbi video_device */
2015 ret
= video_register_device(dev
->vbi_dev
, VFL_TYPE_VBI
,
2016 vbi_nr
[dev
->devno
]);
2018 em28xx_errdev("unable to register vbi device\n");
2022 if (em28xx_boards
[dev
->model
].radio
.type
== EM28XX_RADIO
) {
2023 dev
->radio_dev
= em28xx_vdev_init(dev
, &em28xx_radio_template
, "radio");
2024 if (!dev
->radio_dev
) {
2025 em28xx_errdev("cannot allocate video_device.\n");
2028 ret
= video_register_device(dev
->radio_dev
, VFL_TYPE_RADIO
,
2029 radio_nr
[dev
->devno
]);
2031 em28xx_errdev("can't register radio device\n");
2034 em28xx_info("Registered radio device as /dev/radio%d\n",
2035 dev
->radio_dev
->num
);
2038 em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n",
2039 dev
->vdev
->num
, dev
->vbi_dev
->num
);