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>
36 #include <linux/mutex.h>
37 #include <linux/slab.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"
53 #define EM28XX_VERSION "0.1.3"
55 #define em28xx_videodbg(fmt, arg...) do {\
57 printk(KERN_INFO "%s %s :"fmt, \
58 dev->name, __func__ , ##arg); } while (0)
60 static unsigned int isoc_debug
;
61 module_param(isoc_debug
, int, 0644);
62 MODULE_PARM_DESC(isoc_debug
, "enable debug messages [isoc transfers]");
64 #define em28xx_isocdbg(fmt, arg...) \
67 printk(KERN_INFO "%s %s :"fmt, \
68 dev->name, __func__ , ##arg); \
72 MODULE_AUTHOR(DRIVER_AUTHOR
);
73 MODULE_DESCRIPTION(DRIVER_DESC
);
74 MODULE_LICENSE("GPL");
75 MODULE_VERSION(EM28XX_VERSION
);
77 static unsigned int video_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
78 static unsigned int vbi_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
79 static unsigned int radio_nr
[] = {[0 ... (EM28XX_MAXBOARDS
- 1)] = UNSET
};
81 module_param_array(video_nr
, int, NULL
, 0444);
82 module_param_array(vbi_nr
, int, NULL
, 0444);
83 module_param_array(radio_nr
, int, NULL
, 0444);
84 MODULE_PARM_DESC(video_nr
, "video device numbers");
85 MODULE_PARM_DESC(vbi_nr
, "vbi device numbers");
86 MODULE_PARM_DESC(radio_nr
, "radio device numbers");
88 static unsigned int video_debug
;
89 module_param(video_debug
, int, 0644);
90 MODULE_PARM_DESC(video_debug
, "enable debug messages [video]");
92 /* supported video standards */
93 static struct em28xx_fmt format
[] = {
95 .name
= "16 bpp YUY2, 4:2:2, packed",
96 .fourcc
= V4L2_PIX_FMT_YUYV
,
98 .reg
= EM28XX_OUTFMT_YUV422_Y0UY1V
,
100 .name
= "16 bpp RGB 565, LE",
101 .fourcc
= V4L2_PIX_FMT_RGB565
,
103 .reg
= EM28XX_OUTFMT_RGB_16_656
,
105 .name
= "8 bpp Bayer BGBG..GRGR",
106 .fourcc
= V4L2_PIX_FMT_SBGGR8
,
108 .reg
= EM28XX_OUTFMT_RGB_8_BGBG
,
110 .name
= "8 bpp Bayer GRGR..BGBG",
111 .fourcc
= V4L2_PIX_FMT_SGRBG8
,
113 .reg
= EM28XX_OUTFMT_RGB_8_GRGR
,
115 .name
= "8 bpp Bayer GBGB..RGRG",
116 .fourcc
= V4L2_PIX_FMT_SGBRG8
,
118 .reg
= EM28XX_OUTFMT_RGB_8_GBGB
,
120 .name
= "12 bpp YUV411",
121 .fourcc
= V4L2_PIX_FMT_YUV411P
,
123 .reg
= EM28XX_OUTFMT_YUV411
,
127 /* supported controls */
128 /* Common to all boards */
129 static struct v4l2_queryctrl ac97_qctrl
[] = {
131 .id
= V4L2_CID_AUDIO_VOLUME
,
132 .type
= V4L2_CTRL_TYPE_INTEGER
,
137 .default_value
= 0x1f,
138 .flags
= V4L2_CTRL_FLAG_SLIDER
,
140 .id
= V4L2_CID_AUDIO_MUTE
,
141 .type
= V4L2_CTRL_TYPE_BOOLEAN
,
151 /* ------------------------------------------------------------------
152 DMA and thread functions
153 ------------------------------------------------------------------*/
156 * Announces that a buffer were filled and request the next
158 static inline void buffer_filled(struct em28xx
*dev
,
159 struct em28xx_dmaqueue
*dma_q
,
160 struct em28xx_buffer
*buf
)
162 /* Advice that buffer was filled */
163 em28xx_isocdbg("[%p/%d] wakeup\n", buf
, buf
->vb
.i
);
164 buf
->vb
.state
= VIDEOBUF_DONE
;
165 buf
->vb
.field_count
++;
166 do_gettimeofday(&buf
->vb
.ts
);
168 dev
->isoc_ctl
.vid_buf
= NULL
;
170 list_del(&buf
->vb
.queue
);
171 wake_up(&buf
->vb
.done
);
174 static inline void vbi_buffer_filled(struct em28xx
*dev
,
175 struct em28xx_dmaqueue
*dma_q
,
176 struct em28xx_buffer
*buf
)
178 /* Advice that buffer was filled */
179 em28xx_isocdbg("[%p/%d] wakeup\n", buf
, buf
->vb
.i
);
181 buf
->vb
.state
= VIDEOBUF_DONE
;
182 buf
->vb
.field_count
++;
183 do_gettimeofday(&buf
->vb
.ts
);
185 dev
->isoc_ctl
.vbi_buf
= NULL
;
187 list_del(&buf
->vb
.queue
);
188 wake_up(&buf
->vb
.done
);
192 * Identify the buffer header type and properly handles
194 static void em28xx_copy_video(struct em28xx
*dev
,
195 struct em28xx_dmaqueue
*dma_q
,
196 struct em28xx_buffer
*buf
,
198 unsigned char *outp
, unsigned long len
)
200 void *fieldstart
, *startwrite
, *startread
;
201 int linesdone
, currlinedone
, offset
, lencopy
, remain
;
202 int bytesperline
= dev
->width
<< 1;
204 if (dma_q
->pos
+ len
> buf
->vb
.size
)
205 len
= buf
->vb
.size
- dma_q
->pos
;
210 if (dev
->progressive
)
213 /* Interlaces two half frames */
217 fieldstart
= outp
+ bytesperline
;
220 linesdone
= dma_q
->pos
/ bytesperline
;
221 currlinedone
= dma_q
->pos
% bytesperline
;
223 if (dev
->progressive
)
224 offset
= linesdone
* bytesperline
+ currlinedone
;
226 offset
= linesdone
* bytesperline
* 2 + currlinedone
;
228 startwrite
= fieldstart
+ offset
;
229 lencopy
= bytesperline
- currlinedone
;
230 lencopy
= lencopy
> remain
? remain
: lencopy
;
232 if ((char *)startwrite
+ lencopy
> (char *)outp
+ buf
->vb
.size
) {
233 em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
234 ((char *)startwrite
+ lencopy
) -
235 ((char *)outp
+ buf
->vb
.size
));
236 remain
= (char *)outp
+ buf
->vb
.size
- (char *)startwrite
;
241 memcpy(startwrite
, startread
, lencopy
);
246 startwrite
+= lencopy
+ bytesperline
;
247 startread
+= lencopy
;
248 if (bytesperline
> remain
)
251 lencopy
= bytesperline
;
253 if ((char *)startwrite
+ lencopy
> (char *)outp
+
255 em28xx_isocdbg("Overflow of %zi bytes past buffer end"
257 ((char *)startwrite
+ lencopy
) -
258 ((char *)outp
+ buf
->vb
.size
));
259 lencopy
= remain
= (char *)outp
+ buf
->vb
.size
-
265 memcpy(startwrite
, startread
, lencopy
);
273 static void em28xx_copy_vbi(struct em28xx
*dev
,
274 struct em28xx_dmaqueue
*dma_q
,
275 struct em28xx_buffer
*buf
,
277 unsigned char *outp
, unsigned long len
)
279 void *startwrite
, *startread
;
284 em28xx_isocdbg("dev is null\n");
287 bytesperline
= dev
->vbi_width
;
290 em28xx_isocdbg("dma_q is null\n");
297 em28xx_isocdbg("p is null\n");
301 em28xx_isocdbg("outp is null\n");
305 if (dma_q
->pos
+ len
> buf
->vb
.size
)
306 len
= buf
->vb
.size
- dma_q
->pos
;
310 startwrite
= outp
+ dma_q
->pos
;
313 /* Make sure the bottom field populates the second half of the frame */
314 if (buf
->top_field
== 0) {
315 startwrite
+= bytesperline
* dev
->vbi_height
;
316 offset
+= bytesperline
* dev
->vbi_height
;
319 memcpy(startwrite
, startread
, len
);
323 static inline void print_err_status(struct em28xx
*dev
,
324 int packet
, int status
)
326 char *errmsg
= "Unknown";
330 errmsg
= "unlinked synchronuously";
333 errmsg
= "unlinked asynchronuously";
336 errmsg
= "Buffer error (overrun)";
339 errmsg
= "Stalled (device not responding)";
342 errmsg
= "Babble (bad cable?)";
345 errmsg
= "Bit-stuff error (bad cable?)";
348 errmsg
= "CRC/Timeout (could be anything)";
351 errmsg
= "Device does not respond";
355 em28xx_isocdbg("URB status %d [%s].\n", status
, errmsg
);
357 em28xx_isocdbg("URB packet %d, status %d [%s].\n",
358 packet
, status
, errmsg
);
363 * video-buf generic routine to get the next available buffer
365 static inline void get_next_buf(struct em28xx_dmaqueue
*dma_q
,
366 struct em28xx_buffer
**buf
)
368 struct em28xx
*dev
= container_of(dma_q
, struct em28xx
, vidq
);
371 if (list_empty(&dma_q
->active
)) {
372 em28xx_isocdbg("No active queue to serve\n");
373 dev
->isoc_ctl
.vid_buf
= NULL
;
378 /* Get the next buffer */
379 *buf
= list_entry(dma_q
->active
.next
, struct em28xx_buffer
, vb
.queue
);
381 /* Cleans up buffer - Useful for testing for frame/URB loss */
382 outp
= videobuf_to_vmalloc(&(*buf
)->vb
);
383 memset(outp
, 0, (*buf
)->vb
.size
);
385 dev
->isoc_ctl
.vid_buf
= *buf
;
391 * video-buf generic routine to get the next available VBI buffer
393 static inline void vbi_get_next_buf(struct em28xx_dmaqueue
*dma_q
,
394 struct em28xx_buffer
**buf
)
396 struct em28xx
*dev
= container_of(dma_q
, struct em28xx
, vbiq
);
399 if (list_empty(&dma_q
->active
)) {
400 em28xx_isocdbg("No active queue to serve\n");
401 dev
->isoc_ctl
.vbi_buf
= NULL
;
406 /* Get the next buffer */
407 *buf
= list_entry(dma_q
->active
.next
, struct em28xx_buffer
, vb
.queue
);
408 /* Cleans up buffer - Useful for testing for frame/URB loss */
409 outp
= videobuf_to_vmalloc(&(*buf
)->vb
);
410 memset(outp
, 0x00, (*buf
)->vb
.size
);
412 dev
->isoc_ctl
.vbi_buf
= *buf
;
418 * Controls the isoc copy of each urb packet
420 static inline int em28xx_isoc_copy(struct em28xx
*dev
, struct urb
*urb
)
422 struct em28xx_buffer
*buf
;
423 struct em28xx_dmaqueue
*dma_q
= &dev
->vidq
;
424 unsigned char *outp
= NULL
;
425 int i
, len
= 0, rc
= 1;
431 if ((dev
->state
& DEV_DISCONNECTED
) || (dev
->state
& DEV_MISCONFIGURED
))
434 if (urb
->status
< 0) {
435 print_err_status(dev
, -1, urb
->status
);
436 if (urb
->status
== -ENOENT
)
440 buf
= dev
->isoc_ctl
.vid_buf
;
442 outp
= videobuf_to_vmalloc(&buf
->vb
);
444 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
445 int status
= urb
->iso_frame_desc
[i
].status
;
448 print_err_status(dev
, i
, status
);
449 if (urb
->iso_frame_desc
[i
].status
!= -EPROTO
)
453 len
= urb
->iso_frame_desc
[i
].actual_length
- 4;
455 if (urb
->iso_frame_desc
[i
].actual_length
<= 0) {
456 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
459 if (urb
->iso_frame_desc
[i
].actual_length
>
461 em28xx_isocdbg("packet bigger than packet size");
465 p
= urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
467 /* FIXME: incomplete buffer checks where removed to make
468 logic simpler. Impacts of those changes should be evaluated
470 if (p
[0] == 0x33 && p
[1] == 0x95 && p
[2] == 0x00) {
471 em28xx_isocdbg("VBI HEADER!!!\n");
472 /* FIXME: Should add vbi copy */
475 if (p
[0] == 0x22 && p
[1] == 0x5a) {
476 em28xx_isocdbg("Video frame %d, length=%i, %s\n", p
[2],
477 len
, (p
[2] & 1) ? "odd" : "even");
479 if (dev
->progressive
|| !(p
[2] & 1)) {
481 buffer_filled(dev
, dma_q
, buf
);
482 get_next_buf(dma_q
, &buf
);
486 outp
= videobuf_to_vmalloc(&buf
->vb
);
499 if (p
[0] != 0x88 && p
[0] != 0x22) {
500 em28xx_isocdbg("frame is not complete\n");
505 em28xx_copy_video(dev
, dma_q
, buf
, p
, outp
, len
);
511 /* Version of isoc handler that takes into account a mixture of video and
513 static inline int em28xx_isoc_copy_vbi(struct em28xx
*dev
, struct urb
*urb
)
515 struct em28xx_buffer
*buf
, *vbi_buf
;
516 struct em28xx_dmaqueue
*dma_q
= &dev
->vidq
;
517 struct em28xx_dmaqueue
*vbi_dma_q
= &dev
->vbiq
;
518 unsigned char *outp
= NULL
;
519 unsigned char *vbioutp
= NULL
;
520 int i
, len
= 0, rc
= 1;
527 if ((dev
->state
& DEV_DISCONNECTED
) || (dev
->state
& DEV_MISCONFIGURED
))
530 if (urb
->status
< 0) {
531 print_err_status(dev
, -1, urb
->status
);
532 if (urb
->status
== -ENOENT
)
536 buf
= dev
->isoc_ctl
.vid_buf
;
538 outp
= videobuf_to_vmalloc(&buf
->vb
);
540 vbi_buf
= dev
->isoc_ctl
.vbi_buf
;
542 vbioutp
= videobuf_to_vmalloc(&vbi_buf
->vb
);
544 for (i
= 0; i
< urb
->number_of_packets
; i
++) {
545 int status
= urb
->iso_frame_desc
[i
].status
;
548 print_err_status(dev
, i
, status
);
549 if (urb
->iso_frame_desc
[i
].status
!= -EPROTO
)
553 len
= urb
->iso_frame_desc
[i
].actual_length
;
554 if (urb
->iso_frame_desc
[i
].actual_length
<= 0) {
555 /* em28xx_isocdbg("packet %d is empty",i); - spammy */
558 if (urb
->iso_frame_desc
[i
].actual_length
>
560 em28xx_isocdbg("packet bigger than packet size");
564 p
= urb
->transfer_buffer
+ urb
->iso_frame_desc
[i
].offset
;
566 /* capture type 0 = vbi start
567 capture type 1 = video start
568 capture type 2 = video in progress */
569 if (p
[0] == 0x33 && p
[1] == 0x95) {
570 dev
->capture_type
= 0;
572 em28xx_isocdbg("VBI START HEADER!!!\n");
573 dev
->cur_field
= p
[2];
576 } else if (p
[0] == 0x88 && p
[1] == 0x88 &&
577 p
[2] == 0x88 && p
[3] == 0x88) {
581 } else if (p
[0] == 0x22 && p
[1] == 0x5a) {
587 vbi_size
= dev
->vbi_width
* dev
->vbi_height
;
589 if (dev
->capture_type
== 0) {
590 if (dev
->vbi_read
>= vbi_size
) {
591 /* We've already read all the VBI data, so
592 treat the rest as video */
593 em28xx_isocdbg("dev->vbi_read > vbi_size\n");
594 } else if ((dev
->vbi_read
+ len
) < vbi_size
) {
595 /* This entire frame is VBI data */
596 if (dev
->vbi_read
== 0 &&
597 (!(dev
->cur_field
& 1))) {
598 /* Brand new frame */
600 vbi_buffer_filled(dev
,
603 vbi_get_next_buf(vbi_dma_q
, &vbi_buf
);
607 vbioutp
= videobuf_to_vmalloc(
611 if (dev
->vbi_read
== 0) {
613 if (vbi_buf
!= NULL
) {
614 if (dev
->cur_field
& 1)
615 vbi_buf
->top_field
= 0;
617 vbi_buf
->top_field
= 1;
621 dev
->vbi_read
+= len
;
622 em28xx_copy_vbi(dev
, vbi_dma_q
, vbi_buf
, p
,
625 /* Some of this frame is VBI data and some is
627 int vbi_data_len
= vbi_size
- dev
->vbi_read
;
628 dev
->vbi_read
+= vbi_data_len
;
629 em28xx_copy_vbi(dev
, vbi_dma_q
, vbi_buf
, p
,
630 vbioutp
, vbi_data_len
);
631 dev
->capture_type
= 1;
637 if (dev
->capture_type
== 1) {
638 dev
->capture_type
= 2;
639 if (dev
->progressive
|| !(dev
->cur_field
& 1)) {
641 buffer_filled(dev
, dma_q
, buf
);
642 get_next_buf(dma_q
, &buf
);
646 outp
= videobuf_to_vmalloc(&buf
->vb
);
649 if (dev
->cur_field
& 1)
658 if (buf
!= NULL
&& dev
->capture_type
== 2) {
659 if (len
>= 4 && p
[0] == 0x88 && p
[1] == 0x88 &&
660 p
[2] == 0x88 && p
[3] == 0x88) {
664 if (len
>= 4 && p
[0] == 0x22 && p
[1] == 0x5a) {
665 em28xx_isocdbg("Video frame %d, len=%i, %s\n",
666 p
[2], len
, (p
[2] & 1) ?
673 em28xx_copy_video(dev
, dma_q
, buf
, p
, outp
,
681 /* ------------------------------------------------------------------
683 ------------------------------------------------------------------*/
686 buffer_setup(struct videobuf_queue
*vq
, unsigned int *count
, unsigned int *size
)
688 struct em28xx_fh
*fh
= vq
->priv_data
;
689 struct em28xx
*dev
= fh
->dev
;
690 struct v4l2_frequency f
;
692 *size
= (fh
->dev
->width
* fh
->dev
->height
* dev
->format
->depth
+ 7)
696 *count
= EM28XX_DEF_BUF
;
698 if (*count
< EM28XX_MIN_BUF
)
699 *count
= EM28XX_MIN_BUF
;
701 /* Ask tuner to go to analog or radio mode */
702 memset(&f
, 0, sizeof(f
));
703 f
.frequency
= dev
->ctl_freq
;
704 f
.type
= fh
->radio
? V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
706 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, s_frequency
, &f
);
711 /* This is called *without* dev->slock held; please keep it that way */
712 static void free_buffer(struct videobuf_queue
*vq
, struct em28xx_buffer
*buf
)
714 struct em28xx_fh
*fh
= vq
->priv_data
;
715 struct em28xx
*dev
= fh
->dev
;
716 unsigned long flags
= 0;
720 /* We used to wait for the buffer to finish here, but this didn't work
721 because, as we were keeping the state as VIDEOBUF_QUEUED,
722 videobuf_queue_cancel marked it as finished for us.
723 (Also, it could wedge forever if the hardware was misconfigured.)
725 This should be safe; by the time we get here, the buffer isn't
726 queued anymore. If we ever start marking the buffers as
727 VIDEOBUF_ACTIVE, it won't be, though.
729 spin_lock_irqsave(&dev
->slock
, flags
);
730 if (dev
->isoc_ctl
.vid_buf
== buf
)
731 dev
->isoc_ctl
.vid_buf
= NULL
;
732 spin_unlock_irqrestore(&dev
->slock
, flags
);
734 videobuf_vmalloc_free(&buf
->vb
);
735 buf
->vb
.state
= VIDEOBUF_NEEDS_INIT
;
739 buffer_prepare(struct videobuf_queue
*vq
, struct videobuf_buffer
*vb
,
740 enum v4l2_field field
)
742 struct em28xx_fh
*fh
= vq
->priv_data
;
743 struct em28xx_buffer
*buf
= container_of(vb
, struct em28xx_buffer
, vb
);
744 struct em28xx
*dev
= fh
->dev
;
745 int rc
= 0, urb_init
= 0;
747 buf
->vb
.size
= (fh
->dev
->width
* fh
->dev
->height
* dev
->format
->depth
750 if (0 != buf
->vb
.baddr
&& buf
->vb
.bsize
< buf
->vb
.size
)
753 buf
->vb
.width
= dev
->width
;
754 buf
->vb
.height
= dev
->height
;
755 buf
->vb
.field
= field
;
757 if (VIDEOBUF_NEEDS_INIT
== buf
->vb
.state
) {
758 rc
= videobuf_iolock(vq
, &buf
->vb
, NULL
);
763 if (!dev
->isoc_ctl
.analog_bufs
.num_bufs
)
767 if (em28xx_vbi_supported(dev
) == 1)
768 rc
= em28xx_init_isoc(dev
, EM28XX_ANALOG_MODE
,
772 em28xx_isoc_copy_vbi
);
774 rc
= em28xx_init_isoc(dev
, EM28XX_ANALOG_MODE
,
783 buf
->vb
.state
= VIDEOBUF_PREPARED
;
787 free_buffer(vq
, buf
);
792 buffer_queue(struct videobuf_queue
*vq
, struct videobuf_buffer
*vb
)
794 struct em28xx_buffer
*buf
= container_of(vb
,
795 struct em28xx_buffer
,
797 struct em28xx_fh
*fh
= vq
->priv_data
;
798 struct em28xx
*dev
= fh
->dev
;
799 struct em28xx_dmaqueue
*vidq
= &dev
->vidq
;
801 buf
->vb
.state
= VIDEOBUF_QUEUED
;
802 list_add_tail(&buf
->vb
.queue
, &vidq
->active
);
806 static void buffer_release(struct videobuf_queue
*vq
,
807 struct videobuf_buffer
*vb
)
809 struct em28xx_buffer
*buf
= container_of(vb
,
810 struct em28xx_buffer
,
812 struct em28xx_fh
*fh
= vq
->priv_data
;
813 struct em28xx
*dev
= (struct em28xx
*)fh
->dev
;
815 em28xx_isocdbg("em28xx: called buffer_release\n");
817 free_buffer(vq
, buf
);
820 static struct videobuf_queue_ops em28xx_video_qops
= {
821 .buf_setup
= buffer_setup
,
822 .buf_prepare
= buffer_prepare
,
823 .buf_queue
= buffer_queue
,
824 .buf_release
= buffer_release
,
827 /********************* v4l2 interface **************************************/
829 static void video_mux(struct em28xx
*dev
, int index
)
831 dev
->ctl_input
= index
;
832 dev
->ctl_ainput
= INPUT(index
)->amux
;
833 dev
->ctl_aoutput
= INPUT(index
)->aout
;
835 if (!dev
->ctl_aoutput
)
836 dev
->ctl_aoutput
= EM28XX_AOUT_MASTER
;
838 v4l2_device_call_all(&dev
->v4l2_dev
, 0, video
, s_routing
,
839 INPUT(index
)->vmux
, 0, 0);
841 if (dev
->board
.has_msp34xx
) {
842 if (dev
->i2s_speed
) {
843 v4l2_device_call_all(&dev
->v4l2_dev
, 0, audio
,
844 s_i2s_clock_freq
, dev
->i2s_speed
);
846 /* Note: this is msp3400 specific */
847 v4l2_device_call_all(&dev
->v4l2_dev
, 0, audio
, s_routing
,
848 dev
->ctl_ainput
, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1
), 0);
851 if (dev
->board
.adecoder
!= EM28XX_NOADECODER
) {
852 v4l2_device_call_all(&dev
->v4l2_dev
, 0, audio
, s_routing
,
853 dev
->ctl_ainput
, dev
->ctl_aoutput
, 0);
856 em28xx_audio_analog_set(dev
);
859 /* Usage lock check functions */
860 static int res_get(struct em28xx_fh
*fh
, unsigned int bit
)
862 struct em28xx
*dev
= fh
->dev
;
864 if (fh
->resources
& bit
)
865 /* have it already allocated */
869 if (dev
->resources
& bit
) {
870 /* no, someone else uses it */
873 /* it's free, grab it */
874 fh
->resources
|= bit
;
875 dev
->resources
|= bit
;
876 em28xx_videodbg("res: get %d\n", bit
);
880 static int res_check(struct em28xx_fh
*fh
, unsigned int bit
)
882 return fh
->resources
& bit
;
885 static int res_locked(struct em28xx
*dev
, unsigned int bit
)
887 return dev
->resources
& bit
;
890 static void res_free(struct em28xx_fh
*fh
, unsigned int bits
)
892 struct em28xx
*dev
= fh
->dev
;
894 BUG_ON((fh
->resources
& bits
) != bits
);
896 fh
->resources
&= ~bits
;
897 dev
->resources
&= ~bits
;
898 em28xx_videodbg("res: put %d\n", bits
);
901 static int get_ressource(struct em28xx_fh
*fh
)
904 case V4L2_BUF_TYPE_VIDEO_CAPTURE
:
905 return EM28XX_RESOURCE_VIDEO
;
906 case V4L2_BUF_TYPE_VBI_CAPTURE
:
907 return EM28XX_RESOURCE_VBI
;
916 * return the ac97 supported controls
918 static int ac97_queryctrl(struct v4l2_queryctrl
*qc
)
922 for (i
= 0; i
< ARRAY_SIZE(ac97_qctrl
); i
++) {
923 if (qc
->id
&& qc
->id
== ac97_qctrl
[i
].id
) {
924 memcpy(qc
, &(ac97_qctrl
[i
]), sizeof(*qc
));
929 /* Control is not ac97 related */
935 * return the current values for ac97 mute and volume
937 static int ac97_get_ctrl(struct em28xx
*dev
, struct v4l2_control
*ctrl
)
940 case V4L2_CID_AUDIO_MUTE
:
941 ctrl
->value
= dev
->mute
;
943 case V4L2_CID_AUDIO_VOLUME
:
944 ctrl
->value
= dev
->volume
;
947 /* Control is not ac97 related */
954 * set values for ac97 mute and volume
956 static int ac97_set_ctrl(struct em28xx
*dev
, const struct v4l2_control
*ctrl
)
960 for (i
= 0; i
< ARRAY_SIZE(ac97_qctrl
); i
++)
961 if (ctrl
->id
== ac97_qctrl
[i
].id
)
964 /* Announce that hasn't handle it */
968 if (ctrl
->value
< ac97_qctrl
[i
].minimum
||
969 ctrl
->value
> ac97_qctrl
[i
].maximum
)
973 case V4L2_CID_AUDIO_MUTE
:
974 dev
->mute
= ctrl
->value
;
976 case V4L2_CID_AUDIO_VOLUME
:
977 dev
->volume
= ctrl
->value
;
981 return em28xx_audio_analog_set(dev
);
984 static int check_dev(struct em28xx
*dev
)
986 if (dev
->state
& DEV_DISCONNECTED
) {
987 em28xx_errdev("v4l2 ioctl: device not present\n");
991 if (dev
->state
& DEV_MISCONFIGURED
) {
992 em28xx_errdev("v4l2 ioctl: device is misconfigured; "
993 "close and open it again\n");
999 static void get_scale(struct em28xx
*dev
,
1000 unsigned int width
, unsigned int height
,
1001 unsigned int *hscale
, unsigned int *vscale
)
1003 unsigned int maxw
= norm_maxw(dev
);
1004 unsigned int maxh
= norm_maxh(dev
);
1006 *hscale
= (((unsigned long)maxw
) << 12) / width
- 4096L;
1007 if (*hscale
>= 0x4000)
1010 *vscale
= (((unsigned long)maxh
) << 12) / height
- 4096L;
1011 if (*vscale
>= 0x4000)
1015 /* ------------------------------------------------------------------
1016 IOCTL vidioc handling
1017 ------------------------------------------------------------------*/
1019 static int vidioc_g_fmt_vid_cap(struct file
*file
, void *priv
,
1020 struct v4l2_format
*f
)
1022 struct em28xx_fh
*fh
= priv
;
1023 struct em28xx
*dev
= fh
->dev
;
1025 f
->fmt
.pix
.width
= dev
->width
;
1026 f
->fmt
.pix
.height
= dev
->height
;
1027 f
->fmt
.pix
.pixelformat
= dev
->format
->fourcc
;
1028 f
->fmt
.pix
.bytesperline
= (dev
->width
* dev
->format
->depth
+ 7) >> 3;
1029 f
->fmt
.pix
.sizeimage
= f
->fmt
.pix
.bytesperline
* dev
->height
;
1030 f
->fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
1032 /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */
1033 if (dev
->progressive
)
1034 f
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
1036 f
->fmt
.pix
.field
= dev
->interlaced
?
1037 V4L2_FIELD_INTERLACED
: V4L2_FIELD_TOP
;
1041 static struct em28xx_fmt
*format_by_fourcc(unsigned int fourcc
)
1045 for (i
= 0; i
< ARRAY_SIZE(format
); i
++)
1046 if (format
[i
].fourcc
== fourcc
)
1052 static int vidioc_try_fmt_vid_cap(struct file
*file
, void *priv
,
1053 struct v4l2_format
*f
)
1055 struct em28xx_fh
*fh
= priv
;
1056 struct em28xx
*dev
= fh
->dev
;
1057 unsigned int width
= f
->fmt
.pix
.width
;
1058 unsigned int height
= f
->fmt
.pix
.height
;
1059 unsigned int maxw
= norm_maxw(dev
);
1060 unsigned int maxh
= norm_maxh(dev
);
1061 unsigned int hscale
, vscale
;
1062 struct em28xx_fmt
*fmt
;
1064 fmt
= format_by_fourcc(f
->fmt
.pix
.pixelformat
);
1066 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1067 f
->fmt
.pix
.pixelformat
);
1071 if (dev
->board
.is_em2800
) {
1072 /* the em2800 can only scale down to 50% */
1073 height
= height
> (3 * maxh
/ 4) ? maxh
: maxh
/ 2;
1074 width
= width
> (3 * maxw
/ 4) ? maxw
: maxw
/ 2;
1075 /* MaxPacketSize for em2800 is too small to capture at full resolution
1076 * use half of maxw as the scaler can only scale to 50% */
1077 if (width
== maxw
&& height
== maxh
)
1080 /* width must even because of the YUYV format
1081 height must be even because of interlacing */
1082 v4l_bound_align_image(&width
, 48, maxw
, 1, &height
, 32, maxh
,
1086 get_scale(dev
, width
, height
, &hscale
, &vscale
);
1088 width
= (((unsigned long)maxw
) << 12) / (hscale
+ 4096L);
1089 height
= (((unsigned long)maxh
) << 12) / (vscale
+ 4096L);
1091 f
->fmt
.pix
.width
= width
;
1092 f
->fmt
.pix
.height
= height
;
1093 f
->fmt
.pix
.pixelformat
= fmt
->fourcc
;
1094 f
->fmt
.pix
.bytesperline
= (dev
->width
* fmt
->depth
+ 7) >> 3;
1095 f
->fmt
.pix
.sizeimage
= f
->fmt
.pix
.bytesperline
* height
;
1096 f
->fmt
.pix
.colorspace
= V4L2_COLORSPACE_SMPTE170M
;
1097 if (dev
->progressive
)
1098 f
->fmt
.pix
.field
= V4L2_FIELD_NONE
;
1100 f
->fmt
.pix
.field
= dev
->interlaced
?
1101 V4L2_FIELD_INTERLACED
: V4L2_FIELD_TOP
;
1106 static int em28xx_set_video_format(struct em28xx
*dev
, unsigned int fourcc
,
1107 unsigned width
, unsigned height
)
1109 struct em28xx_fmt
*fmt
;
1111 fmt
= format_by_fourcc(fourcc
);
1117 dev
->height
= height
;
1119 /* set new image size */
1120 get_scale(dev
, dev
->width
, dev
->height
, &dev
->hscale
, &dev
->vscale
);
1122 em28xx_set_alternate(dev
);
1123 em28xx_resolution_set(dev
);
1128 static int vidioc_s_fmt_vid_cap(struct file
*file
, void *priv
,
1129 struct v4l2_format
*f
)
1131 struct em28xx_fh
*fh
= priv
;
1132 struct em28xx
*dev
= fh
->dev
;
1135 rc
= check_dev(dev
);
1139 vidioc_try_fmt_vid_cap(file
, priv
, f
);
1141 if (videobuf_queue_is_busy(&fh
->vb_vidq
)) {
1142 em28xx_errdev("%s queue busy\n", __func__
);
1146 return em28xx_set_video_format(dev
, f
->fmt
.pix
.pixelformat
,
1147 f
->fmt
.pix
.width
, f
->fmt
.pix
.height
);
1150 static int vidioc_g_std(struct file
*file
, void *priv
, v4l2_std_id
*norm
)
1152 struct em28xx_fh
*fh
= priv
;
1153 struct em28xx
*dev
= fh
->dev
;
1156 rc
= check_dev(dev
);
1165 static int vidioc_querystd(struct file
*file
, void *priv
, v4l2_std_id
*norm
)
1167 struct em28xx_fh
*fh
= priv
;
1168 struct em28xx
*dev
= fh
->dev
;
1171 rc
= check_dev(dev
);
1175 v4l2_device_call_all(&dev
->v4l2_dev
, 0, video
, querystd
, norm
);
1180 static int vidioc_s_std(struct file
*file
, void *priv
, v4l2_std_id
*norm
)
1182 struct em28xx_fh
*fh
= priv
;
1183 struct em28xx
*dev
= fh
->dev
;
1184 struct v4l2_format f
;
1187 rc
= check_dev(dev
);
1193 /* Adjusts width/height, if needed */
1194 f
.fmt
.pix
.width
= dev
->width
;
1195 f
.fmt
.pix
.height
= dev
->height
;
1196 vidioc_try_fmt_vid_cap(file
, priv
, &f
);
1198 /* set new image size */
1199 dev
->width
= f
.fmt
.pix
.width
;
1200 dev
->height
= f
.fmt
.pix
.height
;
1201 get_scale(dev
, dev
->width
, dev
->height
, &dev
->hscale
, &dev
->vscale
);
1203 em28xx_resolution_set(dev
);
1204 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, s_std
, dev
->norm
);
1209 static int vidioc_g_parm(struct file
*file
, void *priv
,
1210 struct v4l2_streamparm
*p
)
1212 struct em28xx_fh
*fh
= priv
;
1213 struct em28xx
*dev
= fh
->dev
;
1216 if (p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1219 if (dev
->board
.is_webcam
)
1220 rc
= v4l2_device_call_until_err(&dev
->v4l2_dev
, 0,
1223 v4l2_video_std_frame_period(dev
->norm
,
1224 &p
->parm
.capture
.timeperframe
);
1229 static int vidioc_s_parm(struct file
*file
, void *priv
,
1230 struct v4l2_streamparm
*p
)
1232 struct em28xx_fh
*fh
= priv
;
1233 struct em28xx
*dev
= fh
->dev
;
1235 if (!dev
->board
.is_webcam
)
1238 if (p
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1241 return v4l2_device_call_until_err(&dev
->v4l2_dev
, 0, video
, s_parm
, p
);
1244 static const char *iname
[] = {
1245 [EM28XX_VMUX_COMPOSITE1
] = "Composite1",
1246 [EM28XX_VMUX_COMPOSITE2
] = "Composite2",
1247 [EM28XX_VMUX_COMPOSITE3
] = "Composite3",
1248 [EM28XX_VMUX_COMPOSITE4
] = "Composite4",
1249 [EM28XX_VMUX_SVIDEO
] = "S-Video",
1250 [EM28XX_VMUX_TELEVISION
] = "Television",
1251 [EM28XX_VMUX_CABLE
] = "Cable TV",
1252 [EM28XX_VMUX_DVB
] = "DVB",
1253 [EM28XX_VMUX_DEBUG
] = "for debug only",
1256 static int vidioc_enum_input(struct file
*file
, void *priv
,
1257 struct v4l2_input
*i
)
1259 struct em28xx_fh
*fh
= priv
;
1260 struct em28xx
*dev
= fh
->dev
;
1264 if (n
>= MAX_EM28XX_INPUT
)
1266 if (0 == INPUT(n
)->type
)
1270 i
->type
= V4L2_INPUT_TYPE_CAMERA
;
1272 strcpy(i
->name
, iname
[INPUT(n
)->type
]);
1274 if ((EM28XX_VMUX_TELEVISION
== INPUT(n
)->type
) ||
1275 (EM28XX_VMUX_CABLE
== INPUT(n
)->type
))
1276 i
->type
= V4L2_INPUT_TYPE_TUNER
;
1278 i
->std
= dev
->vdev
->tvnorms
;
1283 static int vidioc_g_input(struct file
*file
, void *priv
, unsigned int *i
)
1285 struct em28xx_fh
*fh
= priv
;
1286 struct em28xx
*dev
= fh
->dev
;
1288 *i
= dev
->ctl_input
;
1293 static int vidioc_s_input(struct file
*file
, void *priv
, unsigned int i
)
1295 struct em28xx_fh
*fh
= priv
;
1296 struct em28xx
*dev
= fh
->dev
;
1299 rc
= check_dev(dev
);
1303 if (i
>= MAX_EM28XX_INPUT
)
1305 if (0 == INPUT(i
)->type
)
1312 static int vidioc_g_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
1314 struct em28xx_fh
*fh
= priv
;
1315 struct em28xx
*dev
= fh
->dev
;
1317 if (!dev
->audio_mode
.has_audio
)
1321 case EM28XX_AMUX_VIDEO
:
1322 strcpy(a
->name
, "Television");
1324 case EM28XX_AMUX_LINE_IN
:
1325 strcpy(a
->name
, "Line In");
1327 case EM28XX_AMUX_VIDEO2
:
1328 strcpy(a
->name
, "Television alt");
1330 case EM28XX_AMUX_PHONE
:
1331 strcpy(a
->name
, "Phone");
1333 case EM28XX_AMUX_MIC
:
1334 strcpy(a
->name
, "Mic");
1336 case EM28XX_AMUX_CD
:
1337 strcpy(a
->name
, "CD");
1339 case EM28XX_AMUX_AUX
:
1340 strcpy(a
->name
, "Aux");
1342 case EM28XX_AMUX_PCM_OUT
:
1343 strcpy(a
->name
, "PCM");
1349 a
->index
= dev
->ctl_ainput
;
1350 a
->capability
= V4L2_AUDCAP_STEREO
;
1355 static int vidioc_s_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
1357 struct em28xx_fh
*fh
= priv
;
1358 struct em28xx
*dev
= fh
->dev
;
1361 if (!dev
->audio_mode
.has_audio
)
1364 if (a
->index
>= MAX_EM28XX_INPUT
)
1366 if (0 == INPUT(a
->index
)->type
)
1369 dev
->ctl_ainput
= INPUT(a
->index
)->amux
;
1370 dev
->ctl_aoutput
= INPUT(a
->index
)->aout
;
1372 if (!dev
->ctl_aoutput
)
1373 dev
->ctl_aoutput
= EM28XX_AOUT_MASTER
;
1378 static int vidioc_queryctrl(struct file
*file
, void *priv
,
1379 struct v4l2_queryctrl
*qc
)
1381 struct em28xx_fh
*fh
= priv
;
1382 struct em28xx
*dev
= fh
->dev
;
1386 rc
= check_dev(dev
);
1390 memset(qc
, 0, sizeof(*qc
));
1394 /* enumerate AC97 controls */
1395 if (dev
->audio_mode
.ac97
!= EM28XX_NO_AC97
) {
1396 rc
= ac97_queryctrl(qc
);
1401 /* enumerate V4L2 device controls */
1402 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, queryctrl
, qc
);
1411 * FIXME: This is an indirect way to check if a control exists at a
1412 * subdev. Instead of that hack, maybe the better would be to change all
1413 * subdevs to return -ENOIOCTLCMD, if an ioctl is not supported.
1415 static int check_subdev_ctrl(struct em28xx
*dev
, int id
)
1417 struct v4l2_queryctrl qc
;
1419 memset(&qc
, 0, sizeof(qc
));
1422 /* enumerate V4L2 device controls */
1423 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, queryctrl
, &qc
);
1431 static int vidioc_g_ctrl(struct file
*file
, void *priv
,
1432 struct v4l2_control
*ctrl
)
1434 struct em28xx_fh
*fh
= priv
;
1435 struct em28xx
*dev
= fh
->dev
;
1438 rc
= check_dev(dev
);
1443 /* Set an AC97 control */
1444 if (dev
->audio_mode
.ac97
!= EM28XX_NO_AC97
)
1445 rc
= ac97_get_ctrl(dev
, ctrl
);
1449 /* It were not an AC97 control. Sends it to the v4l2 dev interface */
1451 if (check_subdev_ctrl(dev
, ctrl
->id
))
1454 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, g_ctrl
, ctrl
);
1461 static int vidioc_s_ctrl(struct file
*file
, void *priv
,
1462 struct v4l2_control
*ctrl
)
1464 struct em28xx_fh
*fh
= priv
;
1465 struct em28xx
*dev
= fh
->dev
;
1468 rc
= check_dev(dev
);
1472 /* Set an AC97 control */
1473 if (dev
->audio_mode
.ac97
!= EM28XX_NO_AC97
)
1474 rc
= ac97_set_ctrl(dev
, ctrl
);
1478 /* It isn't an AC97 control. Sends it to the v4l2 dev interface */
1480 rc
= check_subdev_ctrl(dev
, ctrl
->id
);
1482 v4l2_device_call_all(&dev
->v4l2_dev
, 0,
1483 core
, s_ctrl
, ctrl
);
1485 * In the case of non-AC97 volume controls, we still need
1486 * to do some setups at em28xx, in order to mute/unmute
1487 * and to adjust audio volume. However, the value ranges
1488 * should be checked by the corresponding V4L subdriver.
1491 case V4L2_CID_AUDIO_MUTE
:
1492 dev
->mute
= ctrl
->value
;
1493 rc
= em28xx_audio_analog_set(dev
);
1495 case V4L2_CID_AUDIO_VOLUME
:
1496 dev
->volume
= ctrl
->value
;
1497 rc
= em28xx_audio_analog_set(dev
);
1500 return (rc
< 0) ? rc
: 0;
1503 static int vidioc_g_tuner(struct file
*file
, void *priv
,
1504 struct v4l2_tuner
*t
)
1506 struct em28xx_fh
*fh
= priv
;
1507 struct em28xx
*dev
= fh
->dev
;
1510 rc
= check_dev(dev
);
1517 strcpy(t
->name
, "Tuner");
1518 t
->type
= V4L2_TUNER_ANALOG_TV
;
1520 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, g_tuner
, t
);
1524 static int vidioc_s_tuner(struct file
*file
, void *priv
,
1525 struct v4l2_tuner
*t
)
1527 struct em28xx_fh
*fh
= priv
;
1528 struct em28xx
*dev
= fh
->dev
;
1531 rc
= check_dev(dev
);
1538 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, s_tuner
, t
);
1542 static int vidioc_g_frequency(struct file
*file
, void *priv
,
1543 struct v4l2_frequency
*f
)
1545 struct em28xx_fh
*fh
= priv
;
1546 struct em28xx
*dev
= fh
->dev
;
1548 f
->type
= fh
->radio
? V4L2_TUNER_RADIO
: V4L2_TUNER_ANALOG_TV
;
1549 f
->frequency
= dev
->ctl_freq
;
1553 static int vidioc_s_frequency(struct file
*file
, void *priv
,
1554 struct v4l2_frequency
*f
)
1556 struct em28xx_fh
*fh
= priv
;
1557 struct em28xx
*dev
= fh
->dev
;
1560 rc
= check_dev(dev
);
1567 if (unlikely(0 == fh
->radio
&& f
->type
!= V4L2_TUNER_ANALOG_TV
))
1569 if (unlikely(1 == fh
->radio
&& f
->type
!= V4L2_TUNER_RADIO
))
1572 dev
->ctl_freq
= f
->frequency
;
1573 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, s_frequency
, f
);
1578 #ifdef CONFIG_VIDEO_ADV_DEBUG
1579 static int em28xx_reg_len(int reg
)
1582 case EM28XX_R40_AC97LSB
:
1583 case EM28XX_R30_HSCALELOW
:
1584 case EM28XX_R32_VSCALELOW
:
1591 static int vidioc_g_chip_ident(struct file
*file
, void *priv
,
1592 struct v4l2_dbg_chip_ident
*chip
)
1594 struct em28xx_fh
*fh
= priv
;
1595 struct em28xx
*dev
= fh
->dev
;
1597 chip
->ident
= V4L2_IDENT_NONE
;
1600 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, g_chip_ident
, chip
);
1606 static int vidioc_g_register(struct file
*file
, void *priv
,
1607 struct v4l2_dbg_register
*reg
)
1609 struct em28xx_fh
*fh
= priv
;
1610 struct em28xx
*dev
= fh
->dev
;
1613 switch (reg
->match
.type
) {
1614 case V4L2_CHIP_MATCH_AC97
:
1615 ret
= em28xx_read_ac97(dev
, reg
->reg
);
1622 case V4L2_CHIP_MATCH_I2C_DRIVER
:
1623 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, g_register
, reg
);
1625 case V4L2_CHIP_MATCH_I2C_ADDR
:
1626 /* TODO: is this correct? */
1627 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, g_register
, reg
);
1630 if (!v4l2_chip_match_host(®
->match
))
1635 reg
->size
= em28xx_reg_len(reg
->reg
);
1636 if (reg
->size
== 1) {
1637 ret
= em28xx_read_reg(dev
, reg
->reg
);
1645 ret
= em28xx_read_reg_req_len(dev
, USB_REQ_GET_STATUS
,
1646 reg
->reg
, (char *)&val
, 2);
1650 reg
->val
= le16_to_cpu(val
);
1656 static int vidioc_s_register(struct file
*file
, void *priv
,
1657 struct v4l2_dbg_register
*reg
)
1659 struct em28xx_fh
*fh
= priv
;
1660 struct em28xx
*dev
= fh
->dev
;
1663 switch (reg
->match
.type
) {
1664 case V4L2_CHIP_MATCH_AC97
:
1665 return em28xx_write_ac97(dev
, reg
->reg
, reg
->val
);
1666 case V4L2_CHIP_MATCH_I2C_DRIVER
:
1667 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, s_register
, reg
);
1669 case V4L2_CHIP_MATCH_I2C_ADDR
:
1670 /* TODO: is this correct? */
1671 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, s_register
, reg
);
1674 if (!v4l2_chip_match_host(®
->match
))
1679 buf
= cpu_to_le16(reg
->val
);
1681 return em28xx_write_regs(dev
, reg
->reg
, (char *)&buf
,
1682 em28xx_reg_len(reg
->reg
));
1687 static int vidioc_cropcap(struct file
*file
, void *priv
,
1688 struct v4l2_cropcap
*cc
)
1690 struct em28xx_fh
*fh
= priv
;
1691 struct em28xx
*dev
= fh
->dev
;
1693 if (cc
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1696 cc
->bounds
.left
= 0;
1698 cc
->bounds
.width
= dev
->width
;
1699 cc
->bounds
.height
= dev
->height
;
1700 cc
->defrect
= cc
->bounds
;
1701 cc
->pixelaspect
.numerator
= 54; /* 4:3 FIXME: remove magic numbers */
1702 cc
->pixelaspect
.denominator
= 59;
1707 static int vidioc_streamon(struct file
*file
, void *priv
,
1708 enum v4l2_buf_type type
)
1710 struct em28xx_fh
*fh
= priv
;
1711 struct em28xx
*dev
= fh
->dev
;
1714 rc
= check_dev(dev
);
1718 if (unlikely(type
!= fh
->type
))
1721 em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1722 fh
, type
, fh
->resources
, dev
->resources
);
1724 if (unlikely(!res_get(fh
, get_ressource(fh
))))
1727 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1728 rc
= videobuf_streamon(&fh
->vb_vidq
);
1729 else if (fh
->type
== V4L2_BUF_TYPE_VBI_CAPTURE
)
1730 rc
= videobuf_streamon(&fh
->vb_vbiq
);
1735 static int vidioc_streamoff(struct file
*file
, void *priv
,
1736 enum v4l2_buf_type type
)
1738 struct em28xx_fh
*fh
= priv
;
1739 struct em28xx
*dev
= fh
->dev
;
1742 rc
= check_dev(dev
);
1746 if (fh
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
&&
1747 fh
->type
!= V4L2_BUF_TYPE_VBI_CAPTURE
)
1749 if (type
!= fh
->type
)
1752 em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1753 fh
, type
, fh
->resources
, dev
->resources
);
1755 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1756 if (res_check(fh
, EM28XX_RESOURCE_VIDEO
)) {
1757 videobuf_streamoff(&fh
->vb_vidq
);
1758 res_free(fh
, EM28XX_RESOURCE_VIDEO
);
1760 } else if (fh
->type
== V4L2_BUF_TYPE_VBI_CAPTURE
) {
1761 if (res_check(fh
, EM28XX_RESOURCE_VBI
)) {
1762 videobuf_streamoff(&fh
->vb_vbiq
);
1763 res_free(fh
, EM28XX_RESOURCE_VBI
);
1770 static int vidioc_querycap(struct file
*file
, void *priv
,
1771 struct v4l2_capability
*cap
)
1773 struct em28xx_fh
*fh
= priv
;
1774 struct em28xx
*dev
= fh
->dev
;
1776 strlcpy(cap
->driver
, "em28xx", sizeof(cap
->driver
));
1777 strlcpy(cap
->card
, em28xx_boards
[dev
->model
].name
, sizeof(cap
->card
));
1778 usb_make_path(dev
->udev
, cap
->bus_info
, sizeof(cap
->bus_info
));
1781 V4L2_CAP_SLICED_VBI_CAPTURE
|
1782 V4L2_CAP_VIDEO_CAPTURE
|
1783 V4L2_CAP_READWRITE
| V4L2_CAP_STREAMING
;
1786 cap
->capabilities
|= V4L2_CAP_VBI_CAPTURE
;
1788 if (dev
->audio_mode
.has_audio
)
1789 cap
->capabilities
|= V4L2_CAP_AUDIO
;
1791 if (dev
->tuner_type
!= TUNER_ABSENT
)
1792 cap
->capabilities
|= V4L2_CAP_TUNER
;
1797 static int vidioc_enum_fmt_vid_cap(struct file
*file
, void *priv
,
1798 struct v4l2_fmtdesc
*f
)
1800 if (unlikely(f
->index
>= ARRAY_SIZE(format
)))
1803 strlcpy(f
->description
, format
[f
->index
].name
, sizeof(f
->description
));
1804 f
->pixelformat
= format
[f
->index
].fourcc
;
1809 static int vidioc_enum_framesizes(struct file
*file
, void *priv
,
1810 struct v4l2_frmsizeenum
*fsize
)
1812 struct em28xx_fh
*fh
= priv
;
1813 struct em28xx
*dev
= fh
->dev
;
1814 struct em28xx_fmt
*fmt
;
1815 unsigned int maxw
= norm_maxw(dev
);
1816 unsigned int maxh
= norm_maxh(dev
);
1818 fmt
= format_by_fourcc(fsize
->pixel_format
);
1820 em28xx_videodbg("Fourcc format (%08x) invalid.\n",
1821 fsize
->pixel_format
);
1825 if (dev
->board
.is_em2800
) {
1826 if (fsize
->index
> 1)
1828 fsize
->type
= V4L2_FRMSIZE_TYPE_DISCRETE
;
1829 fsize
->discrete
.width
= maxw
/ (1 + fsize
->index
);
1830 fsize
->discrete
.height
= maxh
/ (1 + fsize
->index
);
1834 if (fsize
->index
!= 0)
1837 /* Report a continuous range */
1838 fsize
->type
= V4L2_FRMSIZE_TYPE_STEPWISE
;
1839 fsize
->stepwise
.min_width
= 48;
1840 fsize
->stepwise
.min_height
= 32;
1841 fsize
->stepwise
.max_width
= maxw
;
1842 fsize
->stepwise
.max_height
= maxh
;
1843 fsize
->stepwise
.step_width
= 1;
1844 fsize
->stepwise
.step_height
= 1;
1848 /* Sliced VBI ioctls */
1849 static int vidioc_g_fmt_sliced_vbi_cap(struct file
*file
, void *priv
,
1850 struct v4l2_format
*f
)
1852 struct em28xx_fh
*fh
= priv
;
1853 struct em28xx
*dev
= fh
->dev
;
1856 rc
= check_dev(dev
);
1860 f
->fmt
.sliced
.service_set
= 0;
1861 v4l2_device_call_all(&dev
->v4l2_dev
, 0, vbi
, g_sliced_fmt
, &f
->fmt
.sliced
);
1863 if (f
->fmt
.sliced
.service_set
== 0)
1869 static int vidioc_try_set_sliced_vbi_cap(struct file
*file
, void *priv
,
1870 struct v4l2_format
*f
)
1872 struct em28xx_fh
*fh
= priv
;
1873 struct em28xx
*dev
= fh
->dev
;
1876 rc
= check_dev(dev
);
1880 v4l2_device_call_all(&dev
->v4l2_dev
, 0, vbi
, g_sliced_fmt
, &f
->fmt
.sliced
);
1882 if (f
->fmt
.sliced
.service_set
== 0)
1888 /* RAW VBI ioctls */
1890 static int vidioc_g_fmt_vbi_cap(struct file
*file
, void *priv
,
1891 struct v4l2_format
*format
)
1893 struct em28xx_fh
*fh
= priv
;
1894 struct em28xx
*dev
= fh
->dev
;
1896 format
->fmt
.vbi
.samples_per_line
= dev
->vbi_width
;
1897 format
->fmt
.vbi
.sample_format
= V4L2_PIX_FMT_GREY
;
1898 format
->fmt
.vbi
.offset
= 0;
1899 format
->fmt
.vbi
.flags
= 0;
1900 format
->fmt
.vbi
.sampling_rate
= 6750000 * 4 / 2;
1901 format
->fmt
.vbi
.count
[0] = dev
->vbi_height
;
1902 format
->fmt
.vbi
.count
[1] = dev
->vbi_height
;
1904 /* Varies by video standard (NTSC, PAL, etc.) */
1905 if (dev
->norm
& V4L2_STD_525_60
) {
1907 format
->fmt
.vbi
.start
[0] = 10;
1908 format
->fmt
.vbi
.start
[1] = 273;
1909 } else if (dev
->norm
& V4L2_STD_625_50
) {
1911 format
->fmt
.vbi
.start
[0] = 6;
1912 format
->fmt
.vbi
.start
[1] = 318;
1918 static int vidioc_s_fmt_vbi_cap(struct file
*file
, void *priv
,
1919 struct v4l2_format
*format
)
1921 struct em28xx_fh
*fh
= priv
;
1922 struct em28xx
*dev
= fh
->dev
;
1924 format
->fmt
.vbi
.samples_per_line
= dev
->vbi_width
;
1925 format
->fmt
.vbi
.sample_format
= V4L2_PIX_FMT_GREY
;
1926 format
->fmt
.vbi
.offset
= 0;
1927 format
->fmt
.vbi
.flags
= 0;
1928 format
->fmt
.vbi
.sampling_rate
= 6750000 * 4 / 2;
1929 format
->fmt
.vbi
.count
[0] = dev
->vbi_height
;
1930 format
->fmt
.vbi
.count
[1] = dev
->vbi_height
;
1932 /* Varies by video standard (NTSC, PAL, etc.) */
1933 if (dev
->norm
& V4L2_STD_525_60
) {
1935 format
->fmt
.vbi
.start
[0] = 10;
1936 format
->fmt
.vbi
.start
[1] = 273;
1937 } else if (dev
->norm
& V4L2_STD_625_50
) {
1939 format
->fmt
.vbi
.start
[0] = 6;
1940 format
->fmt
.vbi
.start
[1] = 318;
1946 static int vidioc_reqbufs(struct file
*file
, void *priv
,
1947 struct v4l2_requestbuffers
*rb
)
1949 struct em28xx_fh
*fh
= priv
;
1950 struct em28xx
*dev
= fh
->dev
;
1953 rc
= check_dev(dev
);
1957 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1958 return videobuf_reqbufs(&fh
->vb_vidq
, rb
);
1960 return videobuf_reqbufs(&fh
->vb_vbiq
, rb
);
1963 static int vidioc_querybuf(struct file
*file
, void *priv
,
1964 struct v4l2_buffer
*b
)
1966 struct em28xx_fh
*fh
= priv
;
1967 struct em28xx
*dev
= fh
->dev
;
1970 rc
= check_dev(dev
);
1974 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
1975 return videobuf_querybuf(&fh
->vb_vidq
, b
);
1977 /* FIXME: I'm not sure yet whether this is a bug in zvbi or
1978 the videobuf framework, but we probably shouldn't be
1979 returning a buffer larger than that which was asked for.
1980 At a minimum, it causes a crash in zvbi since it does
1981 a memcpy based on the source buffer length */
1982 int result
= videobuf_querybuf(&fh
->vb_vbiq
, b
);
1983 b
->length
= dev
->vbi_width
* dev
->vbi_height
* 2;
1989 static int vidioc_qbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*b
)
1991 struct em28xx_fh
*fh
= priv
;
1992 struct em28xx
*dev
= fh
->dev
;
1995 rc
= check_dev(dev
);
1999 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
2000 return videobuf_qbuf(&fh
->vb_vidq
, b
);
2002 return videobuf_qbuf(&fh
->vb_vbiq
, b
);
2005 static int vidioc_dqbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*b
)
2007 struct em28xx_fh
*fh
= priv
;
2008 struct em28xx
*dev
= fh
->dev
;
2011 rc
= check_dev(dev
);
2015 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
2016 return videobuf_dqbuf(&fh
->vb_vidq
, b
, file
->f_flags
&
2019 return videobuf_dqbuf(&fh
->vb_vbiq
, b
, file
->f_flags
&
2023 /* ----------------------------------------------------------- */
2024 /* RADIO ESPECIFIC IOCTLS */
2025 /* ----------------------------------------------------------- */
2027 static int radio_querycap(struct file
*file
, void *priv
,
2028 struct v4l2_capability
*cap
)
2030 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
2032 strlcpy(cap
->driver
, "em28xx", sizeof(cap
->driver
));
2033 strlcpy(cap
->card
, em28xx_boards
[dev
->model
].name
, sizeof(cap
->card
));
2034 usb_make_path(dev
->udev
, cap
->bus_info
, sizeof(cap
->bus_info
));
2036 cap
->capabilities
= V4L2_CAP_TUNER
;
2040 static int radio_g_tuner(struct file
*file
, void *priv
,
2041 struct v4l2_tuner
*t
)
2043 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
2045 if (unlikely(t
->index
> 0))
2048 strcpy(t
->name
, "Radio");
2049 t
->type
= V4L2_TUNER_RADIO
;
2051 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, g_tuner
, t
);
2056 static int radio_enum_input(struct file
*file
, void *priv
,
2057 struct v4l2_input
*i
)
2061 strcpy(i
->name
, "Radio");
2062 i
->type
= V4L2_INPUT_TYPE_TUNER
;
2067 static int radio_g_audio(struct file
*file
, void *priv
, struct v4l2_audio
*a
)
2069 if (unlikely(a
->index
))
2072 strcpy(a
->name
, "Radio");
2076 static int radio_s_tuner(struct file
*file
, void *priv
,
2077 struct v4l2_tuner
*t
)
2079 struct em28xx
*dev
= ((struct em28xx_fh
*)priv
)->dev
;
2084 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, s_tuner
, t
);
2089 static int radio_s_audio(struct file
*file
, void *fh
,
2090 struct v4l2_audio
*a
)
2095 static int radio_s_input(struct file
*file
, void *fh
, unsigned int i
)
2100 static int radio_queryctrl(struct file
*file
, void *priv
,
2101 struct v4l2_queryctrl
*qc
)
2105 if (qc
->id
< V4L2_CID_BASE
||
2106 qc
->id
>= V4L2_CID_LASTP1
)
2109 for (i
= 0; i
< ARRAY_SIZE(ac97_qctrl
); i
++) {
2110 if (qc
->id
&& qc
->id
== ac97_qctrl
[i
].id
) {
2111 memcpy(qc
, &(ac97_qctrl
[i
]), sizeof(*qc
));
2120 * em28xx_v4l2_open()
2121 * inits the device and starts isoc transfer
2123 static int em28xx_v4l2_open(struct file
*filp
)
2125 int errCode
= 0, radio
= 0;
2126 struct video_device
*vdev
= video_devdata(filp
);
2127 struct em28xx
*dev
= video_drvdata(filp
);
2128 enum v4l2_buf_type fh_type
= 0;
2129 struct em28xx_fh
*fh
;
2130 enum v4l2_field field
;
2132 switch (vdev
->vfl_type
) {
2133 case VFL_TYPE_GRABBER
:
2134 fh_type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
2137 fh_type
= V4L2_BUF_TYPE_VBI_CAPTURE
;
2139 case VFL_TYPE_RADIO
:
2144 em28xx_videodbg("open dev=%s type=%s users=%d\n",
2145 video_device_node_name(vdev
), v4l2_type_names
[fh_type
],
2149 if (mutex_lock_interruptible(&dev
->lock
))
2150 return -ERESTARTSYS
;
2151 fh
= kzalloc(sizeof(struct em28xx_fh
), GFP_KERNEL
);
2153 em28xx_errdev("em28xx-video.c: Out of memory?!\n");
2154 mutex_unlock(&dev
->lock
);
2160 filp
->private_data
= fh
;
2162 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
&& dev
->users
== 0) {
2163 em28xx_set_mode(dev
, EM28XX_ANALOG_MODE
);
2164 em28xx_set_alternate(dev
);
2165 em28xx_resolution_set(dev
);
2167 /* Needed, since GPIO might have disabled power of
2170 em28xx_wake_i2c(dev
);
2174 em28xx_videodbg("video_open: setting radio device\n");
2175 v4l2_device_call_all(&dev
->v4l2_dev
, 0, tuner
, s_radio
);
2180 if (dev
->progressive
)
2181 field
= V4L2_FIELD_NONE
;
2183 field
= V4L2_FIELD_INTERLACED
;
2185 videobuf_queue_vmalloc_init(&fh
->vb_vidq
, &em28xx_video_qops
,
2187 V4L2_BUF_TYPE_VIDEO_CAPTURE
, field
,
2188 sizeof(struct em28xx_buffer
), fh
, &dev
->lock
);
2190 videobuf_queue_vmalloc_init(&fh
->vb_vbiq
, &em28xx_vbi_qops
,
2192 V4L2_BUF_TYPE_VBI_CAPTURE
,
2194 sizeof(struct em28xx_buffer
), fh
, &dev
->lock
);
2195 mutex_unlock(&dev
->lock
);
2201 * em28xx_realease_resources()
2202 * unregisters the v4l2,i2c and usb devices
2203 * called when the device gets disconected or at module unload
2205 void em28xx_release_analog_resources(struct em28xx
*dev
)
2208 /*FIXME: I2C IR should be disconnected */
2210 if (dev
->radio_dev
) {
2211 if (video_is_registered(dev
->radio_dev
))
2212 video_unregister_device(dev
->radio_dev
);
2214 video_device_release(dev
->radio_dev
);
2215 dev
->radio_dev
= NULL
;
2218 em28xx_info("V4L2 device %s deregistered\n",
2219 video_device_node_name(dev
->vbi_dev
));
2220 if (video_is_registered(dev
->vbi_dev
))
2221 video_unregister_device(dev
->vbi_dev
);
2223 video_device_release(dev
->vbi_dev
);
2224 dev
->vbi_dev
= NULL
;
2227 em28xx_info("V4L2 device %s deregistered\n",
2228 video_device_node_name(dev
->vdev
));
2229 if (video_is_registered(dev
->vdev
))
2230 video_unregister_device(dev
->vdev
);
2232 video_device_release(dev
->vdev
);
2238 * em28xx_v4l2_close()
2239 * stops streaming and deallocates all resources allocated by the v4l2
2242 static int em28xx_v4l2_close(struct file
*filp
)
2244 struct em28xx_fh
*fh
= filp
->private_data
;
2245 struct em28xx
*dev
= fh
->dev
;
2248 em28xx_videodbg("users=%d\n", dev
->users
);
2250 mutex_lock(&dev
->lock
);
2251 if (res_check(fh
, EM28XX_RESOURCE_VIDEO
)) {
2252 videobuf_stop(&fh
->vb_vidq
);
2253 res_free(fh
, EM28XX_RESOURCE_VIDEO
);
2256 if (res_check(fh
, EM28XX_RESOURCE_VBI
)) {
2257 videobuf_stop(&fh
->vb_vbiq
);
2258 res_free(fh
, EM28XX_RESOURCE_VBI
);
2261 if (dev
->users
== 1) {
2262 /* the device is already disconnect,
2263 free the remaining resources */
2264 if (dev
->state
& DEV_DISCONNECTED
) {
2265 em28xx_release_resources(dev
);
2266 kfree(dev
->alt_max_pkt_size
);
2269 mutex_unlock(&dev
->lock
);
2273 /* Save some power by putting tuner to sleep */
2274 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, s_power
, 0);
2276 /* do this before setting alternate! */
2277 em28xx_uninit_isoc(dev
, EM28XX_ANALOG_MODE
);
2278 em28xx_set_mode(dev
, EM28XX_SUSPEND
);
2280 /* set alternate 0 */
2282 em28xx_videodbg("setting alternate 0\n");
2283 errCode
= usb_set_interface(dev
->udev
, 0, 0);
2285 em28xx_errdev("cannot change alternate number to "
2286 "0 (error=%i)\n", errCode
);
2290 videobuf_mmap_free(&fh
->vb_vidq
);
2291 videobuf_mmap_free(&fh
->vb_vbiq
);
2294 mutex_unlock(&dev
->lock
);
2299 * em28xx_v4l2_read()
2300 * will allocate buffers when called for the first time
2303 em28xx_v4l2_read(struct file
*filp
, char __user
*buf
, size_t count
,
2306 struct em28xx_fh
*fh
= filp
->private_data
;
2307 struct em28xx
*dev
= fh
->dev
;
2310 rc
= check_dev(dev
);
2314 if (mutex_lock_interruptible(&dev
->lock
))
2315 return -ERESTARTSYS
;
2316 /* FIXME: read() is not prepared to allow changing the video
2317 resolution while streaming. Seems a bug at em28xx_set_fmt
2320 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
2321 if (res_locked(dev
, EM28XX_RESOURCE_VIDEO
))
2324 rc
= videobuf_read_stream(&fh
->vb_vidq
, buf
, count
, pos
, 0,
2325 filp
->f_flags
& O_NONBLOCK
);
2326 } else if (fh
->type
== V4L2_BUF_TYPE_VBI_CAPTURE
) {
2327 if (!res_get(fh
, EM28XX_RESOURCE_VBI
))
2330 rc
= videobuf_read_stream(&fh
->vb_vbiq
, buf
, count
, pos
, 0,
2331 filp
->f_flags
& O_NONBLOCK
);
2333 mutex_unlock(&dev
->lock
);
2340 * will allocate buffers when called for the first time
2342 static unsigned int em28xx_poll(struct file
*filp
, poll_table
*wait
)
2344 struct em28xx_fh
*fh
= filp
->private_data
;
2345 struct em28xx
*dev
= fh
->dev
;
2348 rc
= check_dev(dev
);
2352 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
2353 if (!res_get(fh
, EM28XX_RESOURCE_VIDEO
))
2355 return videobuf_poll_stream(filp
, &fh
->vb_vidq
, wait
);
2356 } else if (fh
->type
== V4L2_BUF_TYPE_VBI_CAPTURE
) {
2357 if (!res_get(fh
, EM28XX_RESOURCE_VBI
))
2359 return videobuf_poll_stream(filp
, &fh
->vb_vbiq
, wait
);
2365 static unsigned int em28xx_v4l2_poll(struct file
*filp
, poll_table
*wait
)
2367 struct em28xx_fh
*fh
= filp
->private_data
;
2368 struct em28xx
*dev
= fh
->dev
;
2371 mutex_lock(&dev
->lock
);
2372 res
= em28xx_poll(filp
, wait
);
2373 mutex_unlock(&dev
->lock
);
2378 * em28xx_v4l2_mmap()
2380 static int em28xx_v4l2_mmap(struct file
*filp
, struct vm_area_struct
*vma
)
2382 struct em28xx_fh
*fh
= filp
->private_data
;
2383 struct em28xx
*dev
= fh
->dev
;
2386 rc
= check_dev(dev
);
2390 if (mutex_lock_interruptible(&dev
->lock
))
2391 return -ERESTARTSYS
;
2392 if (fh
->type
== V4L2_BUF_TYPE_VIDEO_CAPTURE
)
2393 rc
= videobuf_mmap_mapper(&fh
->vb_vidq
, vma
);
2394 else if (fh
->type
== V4L2_BUF_TYPE_VBI_CAPTURE
)
2395 rc
= videobuf_mmap_mapper(&fh
->vb_vbiq
, vma
);
2396 mutex_unlock(&dev
->lock
);
2398 em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
2399 (unsigned long)vma
->vm_start
,
2400 (unsigned long)vma
->vm_end
-(unsigned long)vma
->vm_start
,
2406 static const struct v4l2_file_operations em28xx_v4l_fops
= {
2407 .owner
= THIS_MODULE
,
2408 .open
= em28xx_v4l2_open
,
2409 .release
= em28xx_v4l2_close
,
2410 .read
= em28xx_v4l2_read
,
2411 .poll
= em28xx_v4l2_poll
,
2412 .mmap
= em28xx_v4l2_mmap
,
2413 .unlocked_ioctl
= video_ioctl2
,
2416 static const struct v4l2_ioctl_ops video_ioctl_ops
= {
2417 .vidioc_querycap
= vidioc_querycap
,
2418 .vidioc_enum_fmt_vid_cap
= vidioc_enum_fmt_vid_cap
,
2419 .vidioc_g_fmt_vid_cap
= vidioc_g_fmt_vid_cap
,
2420 .vidioc_try_fmt_vid_cap
= vidioc_try_fmt_vid_cap
,
2421 .vidioc_s_fmt_vid_cap
= vidioc_s_fmt_vid_cap
,
2422 .vidioc_g_fmt_vbi_cap
= vidioc_g_fmt_vbi_cap
,
2423 .vidioc_s_fmt_vbi_cap
= vidioc_s_fmt_vbi_cap
,
2424 .vidioc_enum_framesizes
= vidioc_enum_framesizes
,
2425 .vidioc_g_audio
= vidioc_g_audio
,
2426 .vidioc_s_audio
= vidioc_s_audio
,
2427 .vidioc_cropcap
= vidioc_cropcap
,
2428 .vidioc_g_fmt_sliced_vbi_cap
= vidioc_g_fmt_sliced_vbi_cap
,
2429 .vidioc_try_fmt_sliced_vbi_cap
= vidioc_try_set_sliced_vbi_cap
,
2430 .vidioc_s_fmt_sliced_vbi_cap
= vidioc_try_set_sliced_vbi_cap
,
2432 .vidioc_reqbufs
= vidioc_reqbufs
,
2433 .vidioc_querybuf
= vidioc_querybuf
,
2434 .vidioc_qbuf
= vidioc_qbuf
,
2435 .vidioc_dqbuf
= vidioc_dqbuf
,
2436 .vidioc_g_std
= vidioc_g_std
,
2437 .vidioc_querystd
= vidioc_querystd
,
2438 .vidioc_s_std
= vidioc_s_std
,
2439 .vidioc_g_parm
= vidioc_g_parm
,
2440 .vidioc_s_parm
= vidioc_s_parm
,
2441 .vidioc_enum_input
= vidioc_enum_input
,
2442 .vidioc_g_input
= vidioc_g_input
,
2443 .vidioc_s_input
= vidioc_s_input
,
2444 .vidioc_queryctrl
= vidioc_queryctrl
,
2445 .vidioc_g_ctrl
= vidioc_g_ctrl
,
2446 .vidioc_s_ctrl
= vidioc_s_ctrl
,
2447 .vidioc_streamon
= vidioc_streamon
,
2448 .vidioc_streamoff
= vidioc_streamoff
,
2449 .vidioc_g_tuner
= vidioc_g_tuner
,
2450 .vidioc_s_tuner
= vidioc_s_tuner
,
2451 .vidioc_g_frequency
= vidioc_g_frequency
,
2452 .vidioc_s_frequency
= vidioc_s_frequency
,
2453 #ifdef CONFIG_VIDEO_ADV_DEBUG
2454 .vidioc_g_register
= vidioc_g_register
,
2455 .vidioc_s_register
= vidioc_s_register
,
2456 .vidioc_g_chip_ident
= vidioc_g_chip_ident
,
2460 static const struct video_device em28xx_video_template
= {
2461 .fops
= &em28xx_v4l_fops
,
2462 .release
= video_device_release
,
2463 .ioctl_ops
= &video_ioctl_ops
,
2465 .tvnorms
= V4L2_STD_ALL
,
2466 .current_norm
= V4L2_STD_PAL
,
2469 static const struct v4l2_file_operations radio_fops
= {
2470 .owner
= THIS_MODULE
,
2471 .open
= em28xx_v4l2_open
,
2472 .release
= em28xx_v4l2_close
,
2473 .unlocked_ioctl
= video_ioctl2
,
2476 static const struct v4l2_ioctl_ops radio_ioctl_ops
= {
2477 .vidioc_querycap
= radio_querycap
,
2478 .vidioc_g_tuner
= radio_g_tuner
,
2479 .vidioc_enum_input
= radio_enum_input
,
2480 .vidioc_g_audio
= radio_g_audio
,
2481 .vidioc_s_tuner
= radio_s_tuner
,
2482 .vidioc_s_audio
= radio_s_audio
,
2483 .vidioc_s_input
= radio_s_input
,
2484 .vidioc_queryctrl
= radio_queryctrl
,
2485 .vidioc_g_ctrl
= vidioc_g_ctrl
,
2486 .vidioc_s_ctrl
= vidioc_s_ctrl
,
2487 .vidioc_g_frequency
= vidioc_g_frequency
,
2488 .vidioc_s_frequency
= vidioc_s_frequency
,
2489 #ifdef CONFIG_VIDEO_ADV_DEBUG
2490 .vidioc_g_register
= vidioc_g_register
,
2491 .vidioc_s_register
= vidioc_s_register
,
2495 static struct video_device em28xx_radio_template
= {
2496 .name
= "em28xx-radio",
2497 .fops
= &radio_fops
,
2498 .ioctl_ops
= &radio_ioctl_ops
,
2501 /******************************** usb interface ******************************/
2505 static struct video_device
*em28xx_vdev_init(struct em28xx
*dev
,
2506 const struct video_device
*template,
2507 const char *type_name
)
2509 struct video_device
*vfd
;
2511 vfd
= video_device_alloc();
2516 vfd
->v4l2_dev
= &dev
->v4l2_dev
;
2517 vfd
->release
= video_device_release
;
2518 vfd
->debug
= video_debug
;
2519 vfd
->lock
= &dev
->lock
;
2521 snprintf(vfd
->name
, sizeof(vfd
->name
), "%s %s",
2522 dev
->name
, type_name
);
2524 video_set_drvdata(vfd
, dev
);
2528 int em28xx_register_analog_devices(struct em28xx
*dev
)
2534 printk(KERN_INFO
"%s: v4l2 driver version %s\n",
2535 dev
->name
, EM28XX_VERSION
);
2537 /* set default norm */
2538 dev
->norm
= em28xx_video_template
.current_norm
;
2539 v4l2_device_call_all(&dev
->v4l2_dev
, 0, core
, s_std
, dev
->norm
);
2540 dev
->interlaced
= EM28XX_INTERLACED_DEFAULT
;
2542 /* Analog specific initialization */
2543 dev
->format
= &format
[0];
2545 maxw
= norm_maxw(dev
);
2546 /* MaxPacketSize for em2800 is too small to capture at full resolution
2547 * use half of maxw as the scaler can only scale to 50% */
2548 if (dev
->board
.is_em2800
)
2551 em28xx_set_video_format(dev
, format
[0].fourcc
,
2552 maxw
, norm_maxh(dev
));
2556 /* Audio defaults */
2560 /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */
2561 val
= (u8
)em28xx_read_reg(dev
, EM28XX_R0F_XCLK
);
2562 em28xx_write_reg(dev
, EM28XX_R0F_XCLK
,
2563 (EM28XX_XCLK_AUDIO_UNMUTE
| val
));
2565 em28xx_set_outfmt(dev
);
2566 em28xx_colorlevels_set_default(dev
);
2567 em28xx_compression_disable(dev
);
2569 /* allocate and fill video video_device struct */
2570 dev
->vdev
= em28xx_vdev_init(dev
, &em28xx_video_template
, "video");
2572 em28xx_errdev("cannot allocate video_device.\n");
2576 /* register v4l2 video video_device */
2577 ret
= video_register_device(dev
->vdev
, VFL_TYPE_GRABBER
,
2578 video_nr
[dev
->devno
]);
2580 em28xx_errdev("unable to register video device (error=%i).\n",
2585 /* Allocate and fill vbi video_device struct */
2586 if (em28xx_vbi_supported(dev
) == 1) {
2587 dev
->vbi_dev
= em28xx_vdev_init(dev
, &em28xx_video_template
,
2590 /* register v4l2 vbi video_device */
2591 ret
= video_register_device(dev
->vbi_dev
, VFL_TYPE_VBI
,
2592 vbi_nr
[dev
->devno
]);
2594 em28xx_errdev("unable to register vbi device\n");
2599 if (em28xx_boards
[dev
->model
].radio
.type
== EM28XX_RADIO
) {
2600 dev
->radio_dev
= em28xx_vdev_init(dev
, &em28xx_radio_template
,
2602 if (!dev
->radio_dev
) {
2603 em28xx_errdev("cannot allocate video_device.\n");
2606 ret
= video_register_device(dev
->radio_dev
, VFL_TYPE_RADIO
,
2607 radio_nr
[dev
->devno
]);
2609 em28xx_errdev("can't register radio device\n");
2612 em28xx_info("Registered radio device as %s\n",
2613 video_device_node_name(dev
->radio_dev
));
2616 em28xx_info("V4L2 video device registered as %s\n",
2617 video_device_node_name(dev
->vdev
));
2620 em28xx_info("V4L2 VBI device registered as %s\n",
2621 video_device_node_name(dev
->vbi_dev
));