2 * Copyright (C) 2009 Texas Instruments Inc
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * TODO : add support for VBI & HBI data service
19 * add static buffer allocation
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/module.h>
24 #include <linux/errno.h>
27 #include <linux/interrupt.h>
28 #include <linux/workqueue.h>
29 #include <linux/string.h>
30 #include <linux/videodev2.h>
31 #include <linux/wait.h>
32 #include <linux/time.h>
33 #include <linux/i2c.h>
34 #include <linux/platform_device.h>
36 #include <linux/slab.h>
37 #include <media/v4l2-device.h>
38 #include <media/v4l2-ioctl.h>
39 #include <media/v4l2-chip-ident.h>
41 #include "vpif_capture.h"
44 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
45 MODULE_LICENSE("GPL");
46 MODULE_VERSION(VPIF_CAPTURE_VERSION
);
48 #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
49 #define vpif_dbg(level, debug, fmt, arg...) \
50 v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
53 static u32 ch0_numbuffers
= 3;
54 static u32 ch1_numbuffers
= 3;
55 static u32 ch0_bufsize
= 1920 * 1080 * 2;
56 static u32 ch1_bufsize
= 720 * 576 * 2;
58 module_param(debug
, int, 0644);
59 module_param(ch0_numbuffers
, uint
, S_IRUGO
);
60 module_param(ch1_numbuffers
, uint
, S_IRUGO
);
61 module_param(ch0_bufsize
, uint
, S_IRUGO
);
62 module_param(ch1_bufsize
, uint
, S_IRUGO
);
64 MODULE_PARM_DESC(debug
, "Debug level 0-1");
65 MODULE_PARM_DESC(ch2_numbuffers
, "Channel0 buffer count (default:3)");
66 MODULE_PARM_DESC(ch3_numbuffers
, "Channel1 buffer count (default:3)");
67 MODULE_PARM_DESC(ch2_bufsize
, "Channel0 buffer size (default:1920 x 1080 x 2)");
68 MODULE_PARM_DESC(ch3_bufsize
, "Channel1 buffer size (default:720 x 576 x 2)");
70 static struct vpif_config_params config_params
= {
74 .min_bufsize
[0] = 720 * 480 * 2,
75 .min_bufsize
[1] = 720 * 480 * 2,
76 .channel_bufsize
[0] = 1920 * 1080 * 2,
77 .channel_bufsize
[1] = 720 * 576 * 2,
80 /* global variables */
81 static struct vpif_device vpif_obj
= { {NULL
} };
82 static struct device
*vpif_dev
;
83 static void vpif_calculate_offsets(struct channel_obj
*ch
);
84 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
);
87 * buffer_prepare : callback function for buffer prepare
88 * @vb: ptr to vb2_buffer
90 * This is the callback function for buffer prepare when vb2_qbuf()
91 * function is called. The buffer is prepared and user space virtual address
92 * or user address is converted into physical address
94 static int vpif_buffer_prepare(struct vb2_buffer
*vb
)
96 /* Get the file handle object and channel object */
97 struct vpif_fh
*fh
= vb2_get_drv_priv(vb
->vb2_queue
);
98 struct vb2_queue
*q
= vb
->vb2_queue
;
99 struct channel_obj
*ch
= fh
->channel
;
100 struct common_obj
*common
;
103 vpif_dbg(2, debug
, "vpif_buffer_prepare\n");
105 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
107 if (vb
->state
!= VB2_BUF_STATE_ACTIVE
&&
108 vb
->state
!= VB2_BUF_STATE_PREPARED
) {
109 vb2_set_plane_payload(vb
, 0, common
->fmt
.fmt
.pix
.sizeimage
);
110 if (vb2_plane_vaddr(vb
, 0) &&
111 vb2_get_plane_payload(vb
, 0) > vb2_plane_size(vb
, 0))
113 addr
= vb2_dma_contig_plane_dma_addr(vb
, 0);
116 if (!IS_ALIGNED((addr
+ common
->ytop_off
), 8) ||
117 !IS_ALIGNED((addr
+ common
->ybtm_off
), 8) ||
118 !IS_ALIGNED((addr
+ common
->ctop_off
), 8) ||
119 !IS_ALIGNED((addr
+ common
->cbtm_off
), 8))
125 vpif_dbg(1, debug
, "buffer_prepare:offset is not aligned to 8 bytes\n");
130 * vpif_buffer_queue_setup : Callback function for buffer setup.
133 * @nbuffers: ptr to number of buffers requested by application
134 * @nplanes:: contains number of distinct video planes needed to hold a frame
135 * @sizes[]: contains the size (in bytes) of each plane.
136 * @alloc_ctxs: ptr to allocation context
138 * This callback function is called when reqbuf() is called to adjust
139 * the buffer count and buffer size
141 static int vpif_buffer_queue_setup(struct vb2_queue
*vq
,
142 const struct v4l2_format
*fmt
,
143 unsigned int *nbuffers
, unsigned int *nplanes
,
144 unsigned int sizes
[], void *alloc_ctxs
[])
146 /* Get the file handle object and channel object */
147 struct vpif_fh
*fh
= vb2_get_drv_priv(vq
);
148 struct channel_obj
*ch
= fh
->channel
;
149 struct common_obj
*common
;
152 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
154 vpif_dbg(2, debug
, "vpif_buffer_setup\n");
156 /* If memory type is not mmap, return */
157 if (V4L2_MEMORY_MMAP
== common
->memory
) {
158 /* Calculate the size of the buffer */
159 size
= config_params
.channel_bufsize
[ch
->channel_id
];
161 * Checking if the buffer size exceeds the available buffer
162 * ycmux_mode = 0 means 1 channel mode HD and
163 * ycmux_mode = 1 means 2 channels mode SD
165 if (ch
->vpifparams
.std_info
.ycmux_mode
== 0) {
166 if (config_params
.video_limit
[ch
->channel_id
])
167 while (size
* *nbuffers
>
168 (config_params
.video_limit
[0]
169 + config_params
.video_limit
[1]))
172 if (config_params
.video_limit
[ch
->channel_id
])
173 while (size
* *nbuffers
>
174 config_params
.video_limit
[ch
->channel_id
])
179 size
= common
->fmt
.fmt
.pix
.sizeimage
;
182 if (*nbuffers
< config_params
.min_numbuffers
)
183 *nbuffers
= config_params
.min_numbuffers
;
187 alloc_ctxs
[0] = common
->alloc_ctx
;
193 * vpif_buffer_queue : Callback function to add buffer to DMA queue
194 * @vb: ptr to vb2_buffer
196 static void vpif_buffer_queue(struct vb2_buffer
*vb
)
198 /* Get the file handle object and channel object */
199 struct vpif_fh
*fh
= vb2_get_drv_priv(vb
->vb2_queue
);
200 struct channel_obj
*ch
= fh
->channel
;
201 struct vpif_cap_buffer
*buf
= container_of(vb
,
202 struct vpif_cap_buffer
, vb
);
203 struct common_obj
*common
;
205 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
207 vpif_dbg(2, debug
, "vpif_buffer_queue\n");
209 /* add the buffer to the DMA queue */
210 list_add_tail(&buf
->list
, &common
->dma_queue
);
214 * vpif_buf_cleanup : Callback function to free buffer
215 * @vb: ptr to vb2_buffer
217 * This function is called from the videobuf2 layer to free memory
218 * allocated to the buffers
220 static void vpif_buf_cleanup(struct vb2_buffer
*vb
)
222 /* Get the file handle object and channel object */
223 struct vpif_fh
*fh
= vb2_get_drv_priv(vb
->vb2_queue
);
224 struct vpif_cap_buffer
*buf
= container_of(vb
,
225 struct vpif_cap_buffer
, vb
);
226 struct channel_obj
*ch
= fh
->channel
;
227 struct common_obj
*common
;
230 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
232 spin_lock_irqsave(&common
->irqlock
, flags
);
233 if (vb
->state
== VB2_BUF_STATE_ACTIVE
)
234 list_del_init(&buf
->list
);
235 spin_unlock_irqrestore(&common
->irqlock
, flags
);
239 static void vpif_wait_prepare(struct vb2_queue
*vq
)
241 struct vpif_fh
*fh
= vb2_get_drv_priv(vq
);
242 struct channel_obj
*ch
= fh
->channel
;
243 struct common_obj
*common
;
245 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
246 mutex_unlock(&common
->lock
);
249 static void vpif_wait_finish(struct vb2_queue
*vq
)
251 struct vpif_fh
*fh
= vb2_get_drv_priv(vq
);
252 struct channel_obj
*ch
= fh
->channel
;
253 struct common_obj
*common
;
255 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
256 mutex_lock(&common
->lock
);
259 static int vpif_buffer_init(struct vb2_buffer
*vb
)
261 struct vpif_cap_buffer
*buf
= container_of(vb
,
262 struct vpif_cap_buffer
, vb
);
264 INIT_LIST_HEAD(&buf
->list
);
269 static u8 channel_first_int
[VPIF_NUMBER_OF_OBJECTS
][2] =
272 static int vpif_start_streaming(struct vb2_queue
*vq
, unsigned int count
)
274 struct vpif_capture_config
*vpif_config_data
=
275 vpif_dev
->platform_data
;
276 struct vpif_fh
*fh
= vb2_get_drv_priv(vq
);
277 struct channel_obj
*ch
= fh
->channel
;
278 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
279 struct vpif_params
*vpif
= &ch
->vpifparams
;
280 unsigned long addr
= 0;
283 /* If buffer queue is empty, return error */
284 if (list_empty(&common
->dma_queue
)) {
285 vpif_dbg(1, debug
, "buffer queue is empty\n");
289 /* Get the next frame from the buffer queue */
290 common
->cur_frm
= common
->next_frm
= list_entry(common
->dma_queue
.next
,
291 struct vpif_cap_buffer
, list
);
292 /* Remove buffer from the buffer queue */
293 list_del(&common
->cur_frm
->list
);
294 /* Mark state of the current frame to active */
295 common
->cur_frm
->vb
.state
= VB2_BUF_STATE_ACTIVE
;
296 /* Initialize field_id and started member */
299 addr
= vb2_dma_contig_plane_dma_addr(&common
->cur_frm
->vb
, 0);
301 /* Calculate the offset for Y and C data in the buffer */
302 vpif_calculate_offsets(ch
);
304 if ((vpif
->std_info
.frm_fmt
&&
305 ((common
->fmt
.fmt
.pix
.field
!= V4L2_FIELD_NONE
) &&
306 (common
->fmt
.fmt
.pix
.field
!= V4L2_FIELD_ANY
))) ||
307 (!vpif
->std_info
.frm_fmt
&&
308 (common
->fmt
.fmt
.pix
.field
== V4L2_FIELD_NONE
))) {
309 vpif_dbg(1, debug
, "conflict in field format and std format\n");
313 /* configure 1 or 2 channel mode */
314 if (vpif_config_data
->setup_input_channel_mode
) {
315 ret
= vpif_config_data
->
316 setup_input_channel_mode(vpif
->std_info
.ycmux_mode
);
318 vpif_dbg(1, debug
, "can't set vpif channel mode\n");
323 /* Call vpif_set_params function to set the parameters and addresses */
324 ret
= vpif_set_video_params(vpif
, ch
->channel_id
);
327 vpif_dbg(1, debug
, "can't set video params\n");
331 common
->started
= ret
;
332 vpif_config_addr(ch
, ret
);
334 common
->set_addr(addr
+ common
->ytop_off
,
335 addr
+ common
->ybtm_off
,
336 addr
+ common
->ctop_off
,
337 addr
+ common
->cbtm_off
);
340 * Set interrupt for both the fields in VPIF Register enable channel in
343 channel_first_int
[VPIF_VIDEO_INDEX
][ch
->channel_id
] = 1;
344 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
)) {
345 channel0_intr_assert();
346 channel0_intr_enable(1);
349 if ((VPIF_CHANNEL1_VIDEO
== ch
->channel_id
) ||
350 (common
->started
== 2)) {
351 channel1_intr_assert();
352 channel1_intr_enable(1);
359 /* abort streaming and wait for last buffer */
360 static int vpif_stop_streaming(struct vb2_queue
*vq
)
362 struct vpif_fh
*fh
= vb2_get_drv_priv(vq
);
363 struct channel_obj
*ch
= fh
->channel
;
364 struct common_obj
*common
;
366 if (!vb2_is_streaming(vq
))
369 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
371 /* release all active buffers */
372 while (!list_empty(&common
->dma_queue
)) {
373 common
->next_frm
= list_entry(common
->dma_queue
.next
,
374 struct vpif_cap_buffer
, list
);
375 list_del(&common
->next_frm
->list
);
376 vb2_buffer_done(&common
->next_frm
->vb
, VB2_BUF_STATE_ERROR
);
382 static struct vb2_ops video_qops
= {
383 .queue_setup
= vpif_buffer_queue_setup
,
384 .wait_prepare
= vpif_wait_prepare
,
385 .wait_finish
= vpif_wait_finish
,
386 .buf_init
= vpif_buffer_init
,
387 .buf_prepare
= vpif_buffer_prepare
,
388 .start_streaming
= vpif_start_streaming
,
389 .stop_streaming
= vpif_stop_streaming
,
390 .buf_cleanup
= vpif_buf_cleanup
,
391 .buf_queue
= vpif_buffer_queue
,
395 * vpif_process_buffer_complete: process a completed buffer
396 * @common: ptr to common channel object
398 * This function time stamp the buffer and mark it as DONE. It also
399 * wake up any process waiting on the QUEUE and set the next buffer
402 static void vpif_process_buffer_complete(struct common_obj
*common
)
404 do_gettimeofday(&common
->cur_frm
->vb
.v4l2_buf
.timestamp
);
405 vb2_buffer_done(&common
->cur_frm
->vb
,
407 /* Make curFrm pointing to nextFrm */
408 common
->cur_frm
= common
->next_frm
;
412 * vpif_schedule_next_buffer: set next buffer address for capture
413 * @common : ptr to common channel object
415 * This function will get next buffer from the dma queue and
416 * set the buffer address in the vpif register for capture.
417 * the buffer is marked active
419 static void vpif_schedule_next_buffer(struct common_obj
*common
)
421 unsigned long addr
= 0;
423 common
->next_frm
= list_entry(common
->dma_queue
.next
,
424 struct vpif_cap_buffer
, list
);
425 /* Remove that buffer from the buffer queue */
426 list_del(&common
->next_frm
->list
);
427 common
->next_frm
->vb
.state
= VB2_BUF_STATE_ACTIVE
;
428 addr
= vb2_dma_contig_plane_dma_addr(&common
->next_frm
->vb
, 0);
430 /* Set top and bottom field addresses in VPIF registers */
431 common
->set_addr(addr
+ common
->ytop_off
,
432 addr
+ common
->ybtm_off
,
433 addr
+ common
->ctop_off
,
434 addr
+ common
->cbtm_off
);
438 * vpif_channel_isr : ISR handler for vpif capture
440 * @dev_id: dev_id ptr
442 * It changes status of the captured buffer, takes next buffer from the queue
443 * and sets its address in VPIF registers
445 static irqreturn_t
vpif_channel_isr(int irq
, void *dev_id
)
447 struct vpif_device
*dev
= &vpif_obj
;
448 struct common_obj
*common
;
449 struct channel_obj
*ch
;
450 enum v4l2_field field
;
454 channel_id
= *(int *)(dev_id
);
455 if (!vpif_intr_status(channel_id
))
458 ch
= dev
->dev
[channel_id
];
460 field
= ch
->common
[VPIF_VIDEO_INDEX
].fmt
.fmt
.pix
.field
;
462 for (i
= 0; i
< VPIF_NUMBER_OF_OBJECTS
; i
++) {
463 common
= &ch
->common
[i
];
464 /* skip If streaming is not started in this channel */
465 if (0 == common
->started
)
468 /* Check the field format */
469 if (1 == ch
->vpifparams
.std_info
.frm_fmt
) {
470 /* Progressive mode */
471 if (list_empty(&common
->dma_queue
))
474 if (!channel_first_int
[i
][channel_id
])
475 vpif_process_buffer_complete(common
);
477 channel_first_int
[i
][channel_id
] = 0;
479 vpif_schedule_next_buffer(common
);
482 channel_first_int
[i
][channel_id
] = 0;
485 * Interlaced mode. If it is first interrupt, ignore
488 if (channel_first_int
[i
][channel_id
]) {
489 channel_first_int
[i
][channel_id
] = 0;
494 /* Get field id from VPIF registers */
495 fid
= vpif_channel_getfid(ch
->channel_id
);
496 if (fid
!= ch
->field_id
) {
498 * If field id does not match stored
499 * field id, make them in sync
506 /* device field id and local field id are in sync */
508 /* this is even field */
509 if (common
->cur_frm
== common
->next_frm
)
512 /* mark the current buffer as done */
513 vpif_process_buffer_complete(common
);
514 } else if (1 == fid
) {
516 if (list_empty(&common
->dma_queue
) ||
517 (common
->cur_frm
!= common
->next_frm
))
520 vpif_schedule_next_buffer(common
);
528 * vpif_update_std_info() - update standard related info
529 * @ch: ptr to channel object
531 * For a given standard selected by application, update values
532 * in the device data structures
534 static int vpif_update_std_info(struct channel_obj
*ch
)
536 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
537 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
538 const struct vpif_channel_config_params
*config
;
539 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
540 struct video_obj
*vid_ch
= &ch
->video
;
543 vpif_dbg(2, debug
, "vpif_update_std_info\n");
545 for (index
= 0; index
< vpif_ch_params_count
; index
++) {
546 config
= &ch_params
[index
];
547 if (config
->hd_sd
== 0) {
548 vpif_dbg(2, debug
, "SD format\n");
549 if (config
->stdid
& vid_ch
->stdid
) {
550 memcpy(std_info
, config
, sizeof(*config
));
554 vpif_dbg(2, debug
, "HD format\n");
555 if (!memcmp(&config
->dv_timings
, &vid_ch
->dv_timings
,
556 sizeof(vid_ch
->dv_timings
))) {
557 memcpy(std_info
, config
, sizeof(*config
));
563 /* standard not found */
564 if (index
== vpif_ch_params_count
)
567 common
->fmt
.fmt
.pix
.width
= std_info
->width
;
568 common
->width
= std_info
->width
;
569 common
->fmt
.fmt
.pix
.height
= std_info
->height
;
570 common
->height
= std_info
->height
;
571 common
->fmt
.fmt
.pix
.bytesperline
= std_info
->width
;
572 vpifparams
->video_params
.hpitch
= std_info
->width
;
573 vpifparams
->video_params
.storage_mode
= std_info
->frm_fmt
;
579 * vpif_calculate_offsets : This function calculates buffers offsets
580 * @ch : ptr to channel object
582 * This function calculates buffer offsets for Y and C in the top and
585 static void vpif_calculate_offsets(struct channel_obj
*ch
)
587 unsigned int hpitch
, vpitch
, sizeimage
;
588 struct video_obj
*vid_ch
= &(ch
->video
);
589 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
590 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
591 enum v4l2_field field
= common
->fmt
.fmt
.pix
.field
;
593 vpif_dbg(2, debug
, "vpif_calculate_offsets\n");
595 if (V4L2_FIELD_ANY
== field
) {
596 if (vpifparams
->std_info
.frm_fmt
)
597 vid_ch
->buf_field
= V4L2_FIELD_NONE
;
599 vid_ch
->buf_field
= V4L2_FIELD_INTERLACED
;
601 vid_ch
->buf_field
= common
->fmt
.fmt
.pix
.field
;
603 sizeimage
= common
->fmt
.fmt
.pix
.sizeimage
;
605 hpitch
= common
->fmt
.fmt
.pix
.bytesperline
;
606 vpitch
= sizeimage
/ (hpitch
* 2);
608 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
609 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
)) {
610 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
611 common
->ytop_off
= 0;
612 common
->ybtm_off
= hpitch
;
613 common
->ctop_off
= sizeimage
/ 2;
614 common
->cbtm_off
= sizeimage
/ 2 + hpitch
;
615 } else if (V4L2_FIELD_SEQ_TB
== vid_ch
->buf_field
) {
616 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
617 common
->ytop_off
= 0;
618 common
->ybtm_off
= sizeimage
/ 4;
619 common
->ctop_off
= sizeimage
/ 2;
620 common
->cbtm_off
= common
->ctop_off
+ sizeimage
/ 4;
621 } else if (V4L2_FIELD_SEQ_BT
== vid_ch
->buf_field
) {
622 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
623 common
->ybtm_off
= 0;
624 common
->ytop_off
= sizeimage
/ 4;
625 common
->cbtm_off
= sizeimage
/ 2;
626 common
->ctop_off
= common
->cbtm_off
+ sizeimage
/ 4;
628 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
629 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
))
630 vpifparams
->video_params
.storage_mode
= 1;
632 vpifparams
->video_params
.storage_mode
= 0;
634 if (1 == vpifparams
->std_info
.frm_fmt
)
635 vpifparams
->video_params
.hpitch
=
636 common
->fmt
.fmt
.pix
.bytesperline
;
638 if ((field
== V4L2_FIELD_ANY
)
639 || (field
== V4L2_FIELD_INTERLACED
))
640 vpifparams
->video_params
.hpitch
=
641 common
->fmt
.fmt
.pix
.bytesperline
* 2;
643 vpifparams
->video_params
.hpitch
=
644 common
->fmt
.fmt
.pix
.bytesperline
;
647 ch
->vpifparams
.video_params
.stdid
= vpifparams
->std_info
.stdid
;
651 * vpif_config_format: configure default frame format in the device
652 * ch : ptr to channel object
654 static void vpif_config_format(struct channel_obj
*ch
)
656 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
658 vpif_dbg(2, debug
, "vpif_config_format\n");
660 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_ANY
;
661 if (config_params
.numbuffers
[ch
->channel_id
] == 0)
662 common
->memory
= V4L2_MEMORY_USERPTR
;
664 common
->memory
= V4L2_MEMORY_MMAP
;
666 common
->fmt
.fmt
.pix
.sizeimage
667 = config_params
.channel_bufsize
[ch
->channel_id
];
669 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
)
670 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_SBGGR8
;
672 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_YUV422P
;
673 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
677 * vpif_get_default_field() - Get default field type based on interface
678 * @vpif_params - ptr to vpif params
680 static inline enum v4l2_field
vpif_get_default_field(
681 struct vpif_interface
*iface
)
683 return (iface
->if_type
== VPIF_IF_RAW_BAYER
) ? V4L2_FIELD_NONE
:
684 V4L2_FIELD_INTERLACED
;
688 * vpif_check_format() - check given pixel format for compatibility
690 * @pixfmt - Given pixel format
691 * @update - update the values as per hardware requirement
693 * Check the application pixel format for S_FMT and update the input
694 * values as per hardware limits for TRY_FMT. The default pixel and
695 * field format is selected based on interface type.
697 static int vpif_check_format(struct channel_obj
*ch
,
698 struct v4l2_pix_format
*pixfmt
,
701 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
702 struct vpif_params
*vpif_params
= &ch
->vpifparams
;
703 enum v4l2_field field
= pixfmt
->field
;
704 u32 sizeimage
, hpitch
, vpitch
;
707 vpif_dbg(2, debug
, "vpif_check_format\n");
709 * first check for the pixel format. If if_type is Raw bayer,
710 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
711 * V4L2_PIX_FMT_YUV422P is supported
713 if (vpif_params
->iface
.if_type
== VPIF_IF_RAW_BAYER
) {
714 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_SBGGR8
) {
716 vpif_dbg(2, debug
, "invalid pix format\n");
719 pixfmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
722 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_YUV422P
) {
724 vpif_dbg(2, debug
, "invalid pixel format\n");
727 pixfmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
731 if (!(VPIF_VALID_FIELD(field
))) {
733 vpif_dbg(2, debug
, "invalid field format\n");
737 * By default use FIELD_NONE for RAW Bayer capture
738 * and FIELD_INTERLACED for other interfaces
740 field
= vpif_get_default_field(&vpif_params
->iface
);
741 } else if (field
== V4L2_FIELD_ANY
)
742 /* unsupported field. Use default */
743 field
= vpif_get_default_field(&vpif_params
->iface
);
745 /* validate the hpitch */
746 hpitch
= pixfmt
->bytesperline
;
747 if (hpitch
< vpif_params
->std_info
.width
) {
749 vpif_dbg(2, debug
, "invalid hpitch\n");
752 hpitch
= vpif_params
->std_info
.width
;
755 sizeimage
= pixfmt
->sizeimage
;
757 vpitch
= sizeimage
/ (hpitch
* 2);
759 /* validate the vpitch */
760 if (vpitch
< vpif_params
->std_info
.height
) {
762 vpif_dbg(2, debug
, "Invalid vpitch\n");
765 vpitch
= vpif_params
->std_info
.height
;
768 /* Check for 8 byte alignment */
769 if (!ALIGN(hpitch
, 8)) {
771 vpif_dbg(2, debug
, "invalid pitch alignment\n");
774 /* adjust to next 8 byte boundary */
775 hpitch
= (((hpitch
+ 7) / 8) * 8);
777 /* if update is set, modify the bytesperline and sizeimage */
779 pixfmt
->bytesperline
= hpitch
;
780 pixfmt
->sizeimage
= hpitch
* vpitch
* 2;
783 * Image width and height is always based on current standard width and
786 pixfmt
->width
= common
->fmt
.fmt
.pix
.width
;
787 pixfmt
->height
= common
->fmt
.fmt
.pix
.height
;
794 * vpif_config_addr() - function to configure buffer address in vpif
796 * @muxmode - channel mux mode
798 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
)
800 struct common_obj
*common
;
802 vpif_dbg(2, debug
, "vpif_config_addr\n");
804 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
806 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)
807 common
->set_addr
= ch1_set_videobuf_addr
;
808 else if (2 == muxmode
)
809 common
->set_addr
= ch0_set_videobuf_addr_yc_nmux
;
811 common
->set_addr
= ch0_set_videobuf_addr
;
815 * vpif_mmap : It is used to map kernel space buffers into user spaces
816 * @filep: file pointer
817 * @vma: ptr to vm_area_struct
819 static int vpif_mmap(struct file
*filep
, struct vm_area_struct
*vma
)
821 /* Get the channel object and file handle object */
822 struct vpif_fh
*fh
= filep
->private_data
;
823 struct channel_obj
*ch
= fh
->channel
;
824 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
827 vpif_dbg(2, debug
, "vpif_mmap\n");
829 if (mutex_lock_interruptible(&common
->lock
))
831 ret
= vb2_mmap(&common
->buffer_queue
, vma
);
832 mutex_unlock(&common
->lock
);
837 * vpif_poll: It is used for select/poll system call
838 * @filep: file pointer
839 * @wait: poll table to wait
841 static unsigned int vpif_poll(struct file
*filep
, poll_table
* wait
)
843 struct vpif_fh
*fh
= filep
->private_data
;
844 struct channel_obj
*channel
= fh
->channel
;
845 struct common_obj
*common
= &(channel
->common
[VPIF_VIDEO_INDEX
]);
846 unsigned int res
= 0;
848 vpif_dbg(2, debug
, "vpif_poll\n");
850 if (common
->started
) {
851 mutex_lock(&common
->lock
);
852 res
= vb2_poll(&common
->buffer_queue
, filep
, wait
);
853 mutex_unlock(&common
->lock
);
859 * vpif_open : vpif open handler
862 * It creates object of file handle structure and stores it in private_data
863 * member of filepointer
865 static int vpif_open(struct file
*filep
)
867 struct video_device
*vdev
= video_devdata(filep
);
868 struct common_obj
*common
;
869 struct video_obj
*vid_ch
;
870 struct channel_obj
*ch
;
873 vpif_dbg(2, debug
, "vpif_open\n");
875 ch
= video_get_drvdata(vdev
);
878 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
880 /* Allocate memory for the file handle object */
881 fh
= kzalloc(sizeof(struct vpif_fh
), GFP_KERNEL
);
883 vpif_err("unable to allocate memory for file handle object\n");
887 if (mutex_lock_interruptible(&common
->lock
)) {
891 /* store pointer to fh in private_data member of filep */
892 filep
->private_data
= fh
;
895 /* If decoder is not initialized. initialize it */
896 if (!ch
->initialized
) {
899 memset(&(ch
->vpifparams
), 0, sizeof(struct vpif_params
));
901 /* Increment channel usrs counter */
903 /* Set io_allowed member to false */
904 fh
->io_allowed
[VPIF_VIDEO_INDEX
] = 0;
905 /* Initialize priority of this instance to default priority */
906 fh
->prio
= V4L2_PRIORITY_UNSET
;
907 v4l2_prio_open(&ch
->prio
, &fh
->prio
);
908 mutex_unlock(&common
->lock
);
913 * vpif_release : function to clean up file close
914 * @filep: file pointer
916 * This function deletes buffer queue, frees the buffers and the vpif file
919 static int vpif_release(struct file
*filep
)
921 struct vpif_fh
*fh
= filep
->private_data
;
922 struct channel_obj
*ch
= fh
->channel
;
923 struct common_obj
*common
;
925 vpif_dbg(2, debug
, "vpif_release\n");
927 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
929 mutex_lock(&common
->lock
);
930 /* if this instance is doing IO */
931 if (fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
932 /* Reset io_usrs member of channel object */
934 /* Disable channel as per its device type and channel id */
935 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
937 channel0_intr_enable(0);
939 if ((VPIF_CHANNEL1_VIDEO
== ch
->channel_id
) ||
940 (2 == common
->started
)) {
942 channel1_intr_enable(0);
945 /* Free buffers allocated */
946 vb2_queue_release(&common
->buffer_queue
);
947 vb2_dma_contig_cleanup_ctx(common
->alloc_ctx
);
950 /* Decrement channel usrs counter */
953 /* Close the priority */
954 v4l2_prio_close(&ch
->prio
, fh
->prio
);
959 mutex_unlock(&common
->lock
);
960 filep
->private_data
= NULL
;
966 * vpif_reqbufs() - request buffer handler
969 * @reqbuf: request buffer structure ptr
971 static int vpif_reqbufs(struct file
*file
, void *priv
,
972 struct v4l2_requestbuffers
*reqbuf
)
974 struct vpif_fh
*fh
= priv
;
975 struct channel_obj
*ch
= fh
->channel
;
976 struct common_obj
*common
;
981 vpif_dbg(2, debug
, "vpif_reqbufs\n");
984 * This file handle has not initialized the channel,
985 * It is not allowed to do settings
987 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
)
988 || (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
989 if (!fh
->initialized
) {
990 vpif_dbg(1, debug
, "Channel Busy\n");
995 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= reqbuf
->type
|| !vpif_dev
)
998 index
= VPIF_VIDEO_INDEX
;
1000 common
= &ch
->common
[index
];
1002 if (0 != common
->io_usrs
)
1005 /* Initialize videobuf2 queue as per the buffer type */
1006 common
->alloc_ctx
= vb2_dma_contig_init_ctx(vpif_dev
);
1007 if (!common
->alloc_ctx
) {
1008 vpif_err("Failed to get the context\n");
1011 q
= &common
->buffer_queue
;
1012 q
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1013 q
->io_modes
= VB2_MMAP
| VB2_USERPTR
;
1015 q
->ops
= &video_qops
;
1016 q
->mem_ops
= &vb2_dma_contig_memops
;
1017 q
->buf_struct_size
= sizeof(struct vpif_cap_buffer
);
1019 ret
= vb2_queue_init(q
);
1021 vpif_err("vpif_capture: vb2_queue_init() failed\n");
1022 vb2_dma_contig_cleanup_ctx(common
->alloc_ctx
);
1025 /* Set io allowed member of file handle to TRUE */
1026 fh
->io_allowed
[index
] = 1;
1027 /* Increment io usrs member of channel object to 1 */
1028 common
->io_usrs
= 1;
1029 /* Store type of memory requested in channel object */
1030 common
->memory
= reqbuf
->memory
;
1031 INIT_LIST_HEAD(&common
->dma_queue
);
1033 /* Allocate buffers */
1034 return vb2_reqbufs(&common
->buffer_queue
, reqbuf
);
1038 * vpif_querybuf() - query buffer handler
1040 * @priv: file handle
1041 * @buf: v4l2 buffer structure ptr
1043 static int vpif_querybuf(struct file
*file
, void *priv
,
1044 struct v4l2_buffer
*buf
)
1046 struct vpif_fh
*fh
= priv
;
1047 struct channel_obj
*ch
= fh
->channel
;
1048 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1050 vpif_dbg(2, debug
, "vpif_querybuf\n");
1052 if (common
->fmt
.type
!= buf
->type
)
1055 if (common
->memory
!= V4L2_MEMORY_MMAP
) {
1056 vpif_dbg(1, debug
, "Invalid memory\n");
1060 return vb2_querybuf(&common
->buffer_queue
, buf
);
1064 * vpif_qbuf() - query buffer handler
1066 * @priv: file handle
1067 * @buf: v4l2 buffer structure ptr
1069 static int vpif_qbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*buf
)
1072 struct vpif_fh
*fh
= priv
;
1073 struct channel_obj
*ch
= fh
->channel
;
1074 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1075 struct v4l2_buffer tbuf
= *buf
;
1077 vpif_dbg(2, debug
, "vpif_qbuf\n");
1079 if (common
->fmt
.type
!= tbuf
.type
) {
1080 vpif_err("invalid buffer type\n");
1084 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
1085 vpif_err("fh io not allowed\n");
1089 return vb2_qbuf(&common
->buffer_queue
, buf
);
1093 * vpif_dqbuf() - query buffer handler
1095 * @priv: file handle
1096 * @buf: v4l2 buffer structure ptr
1098 static int vpif_dqbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*buf
)
1100 struct vpif_fh
*fh
= priv
;
1101 struct channel_obj
*ch
= fh
->channel
;
1102 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1104 vpif_dbg(2, debug
, "vpif_dqbuf\n");
1106 return vb2_dqbuf(&common
->buffer_queue
, buf
,
1107 (file
->f_flags
& O_NONBLOCK
));
1111 * vpif_streamon() - streamon handler
1113 * @priv: file handle
1114 * @buftype: v4l2 buffer type
1116 static int vpif_streamon(struct file
*file
, void *priv
,
1117 enum v4l2_buf_type buftype
)
1120 struct vpif_fh
*fh
= priv
;
1121 struct channel_obj
*ch
= fh
->channel
;
1122 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1123 struct channel_obj
*oth_ch
= vpif_obj
.dev
[!ch
->channel_id
];
1124 struct vpif_params
*vpif
;
1127 vpif_dbg(2, debug
, "vpif_streamon\n");
1129 vpif
= &ch
->vpifparams
;
1131 if (buftype
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1132 vpif_dbg(1, debug
, "buffer type not supported\n");
1136 /* If file handle is not allowed IO, return error */
1137 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
1138 vpif_dbg(1, debug
, "io not allowed\n");
1142 /* If Streaming is already started, return error */
1143 if (common
->started
) {
1144 vpif_dbg(1, debug
, "channel->started\n");
1148 if ((ch
->channel_id
== VPIF_CHANNEL0_VIDEO
&&
1149 oth_ch
->common
[VPIF_VIDEO_INDEX
].started
&&
1150 vpif
->std_info
.ycmux_mode
== 0) ||
1151 ((ch
->channel_id
== VPIF_CHANNEL1_VIDEO
) &&
1152 (2 == oth_ch
->common
[VPIF_VIDEO_INDEX
].started
))) {
1153 vpif_dbg(1, debug
, "other channel is being used\n");
1157 ret
= vpif_check_format(ch
, &common
->fmt
.fmt
.pix
, 0);
1161 /* Enable streamon on the sub device */
1162 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 1);
1164 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
1165 vpif_dbg(1, debug
, "stream on failed in subdev\n");
1169 /* Call vb2_streamon to start streaming in videobuf2 */
1170 ret
= vb2_streamon(&common
->buffer_queue
, buftype
);
1172 vpif_dbg(1, debug
, "vb2_streamon\n");
1180 * vpif_streamoff() - streamoff handler
1182 * @priv: file handle
1183 * @buftype: v4l2 buffer type
1185 static int vpif_streamoff(struct file
*file
, void *priv
,
1186 enum v4l2_buf_type buftype
)
1189 struct vpif_fh
*fh
= priv
;
1190 struct channel_obj
*ch
= fh
->channel
;
1191 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1194 vpif_dbg(2, debug
, "vpif_streamoff\n");
1196 if (buftype
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1197 vpif_dbg(1, debug
, "buffer type not supported\n");
1201 /* If io is allowed for this file handle, return error */
1202 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
1203 vpif_dbg(1, debug
, "io not allowed\n");
1207 /* If streaming is not started, return error */
1208 if (!common
->started
) {
1209 vpif_dbg(1, debug
, "channel->started\n");
1213 /* disable channel */
1214 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
1216 channel0_intr_enable(0);
1219 channel1_intr_enable(0);
1222 common
->started
= 0;
1224 ret
= v4l2_subdev_call(ch
->sd
, video
, s_stream
, 0);
1226 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
)
1227 vpif_dbg(1, debug
, "stream off failed in subdev\n");
1229 return vb2_streamoff(&common
->buffer_queue
, buftype
);
1233 * vpif_input_to_subdev() - Maps input to sub device
1234 * @vpif_cfg - global config ptr
1235 * @chan_cfg - channel config ptr
1236 * @input_index - Given input index from application
1238 * lookup the sub device information for a given input index.
1239 * we report all the inputs to application. inputs table also
1240 * has sub device name for the each input
1242 static int vpif_input_to_subdev(
1243 struct vpif_capture_config
*vpif_cfg
,
1244 struct vpif_capture_chan_config
*chan_cfg
,
1247 struct vpif_subdev_info
*subdev_info
;
1248 const char *subdev_name
;
1251 vpif_dbg(2, debug
, "vpif_input_to_subdev\n");
1253 subdev_name
= chan_cfg
->inputs
[input_index
].subdev_name
;
1254 if (subdev_name
== NULL
)
1257 /* loop through the sub device list to get the sub device info */
1258 for (i
= 0; i
< vpif_cfg
->subdev_count
; i
++) {
1259 subdev_info
= &vpif_cfg
->subdev_info
[i
];
1260 if (!strcmp(subdev_info
->name
, subdev_name
))
1267 * vpif_set_input() - Select an input
1268 * @vpif_cfg - global config ptr
1270 * @_index - Given input index from application
1272 * Select the given input.
1274 static int vpif_set_input(
1275 struct vpif_capture_config
*vpif_cfg
,
1276 struct channel_obj
*ch
,
1279 struct vpif_capture_chan_config
*chan_cfg
=
1280 &vpif_cfg
->chan_config
[ch
->channel_id
];
1281 struct vpif_subdev_info
*subdev_info
= NULL
;
1282 struct v4l2_subdev
*sd
= NULL
;
1283 u32 input
= 0, output
= 0;
1287 sd_index
= vpif_input_to_subdev(vpif_cfg
, chan_cfg
, index
);
1288 if (sd_index
>= 0) {
1289 sd
= vpif_obj
.sd
[sd_index
];
1290 subdev_info
= &vpif_cfg
->subdev_info
[sd_index
];
1293 /* first setup input path from sub device to vpif */
1294 if (sd
&& vpif_cfg
->setup_input_path
) {
1295 ret
= vpif_cfg
->setup_input_path(ch
->channel_id
,
1298 vpif_dbg(1, debug
, "couldn't setup input path for the" \
1299 " sub device %s, for input index %d\n",
1300 subdev_info
->name
, index
);
1306 input
= chan_cfg
->inputs
[index
].input_route
;
1307 output
= chan_cfg
->inputs
[index
].output_route
;
1308 ret
= v4l2_subdev_call(sd
, video
, s_routing
,
1310 if (ret
< 0 && ret
!= -ENOIOCTLCMD
) {
1311 vpif_dbg(1, debug
, "Failed to set input\n");
1315 ch
->input_idx
= index
;
1317 /* copy interface parameters to vpif */
1318 ch
->vpifparams
.iface
= chan_cfg
->vpif_if
;
1320 /* update tvnorms from the sub device input info */
1321 ch
->video_dev
->tvnorms
= chan_cfg
->inputs
[index
].input
.std
;
1326 * vpif_querystd() - querystd handler
1328 * @priv: file handle
1329 * @std_id: ptr to std id
1331 * This function is called to detect standard at the selected input
1333 static int vpif_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1335 struct vpif_fh
*fh
= priv
;
1336 struct channel_obj
*ch
= fh
->channel
;
1339 vpif_dbg(2, debug
, "vpif_querystd\n");
1341 /* Call querystd function of decoder device */
1342 ret
= v4l2_subdev_call(ch
->sd
, video
, querystd
, std_id
);
1344 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1347 vpif_dbg(1, debug
, "Failed to query standard for sub devices\n");
1355 * vpif_g_std() - get STD handler
1357 * @priv: file handle
1358 * @std_id: ptr to std id
1360 static int vpif_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std
)
1362 struct vpif_fh
*fh
= priv
;
1363 struct channel_obj
*ch
= fh
->channel
;
1365 vpif_dbg(2, debug
, "vpif_g_std\n");
1367 *std
= ch
->video
.stdid
;
1372 * vpif_s_std() - set STD handler
1374 * @priv: file handle
1375 * @std_id: ptr to std id
1377 static int vpif_s_std(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1379 struct vpif_fh
*fh
= priv
;
1380 struct channel_obj
*ch
= fh
->channel
;
1381 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1384 vpif_dbg(2, debug
, "vpif_s_std\n");
1386 if (common
->started
) {
1387 vpif_err("streaming in progress\n");
1391 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1392 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1393 if (!fh
->initialized
) {
1394 vpif_dbg(1, debug
, "Channel Busy\n");
1399 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1403 fh
->initialized
= 1;
1405 /* Call encoder subdevice function to set the standard */
1406 ch
->video
.stdid
= *std_id
;
1407 memset(&ch
->video
.dv_timings
, 0, sizeof(ch
->video
.dv_timings
));
1409 /* Get the information about the standard */
1410 if (vpif_update_std_info(ch
)) {
1411 vpif_err("Error getting the standard info\n");
1415 /* Configure the default format information */
1416 vpif_config_format(ch
);
1418 /* set standard in the sub device */
1419 ret
= v4l2_subdev_call(ch
->sd
, core
, s_std
, *std_id
);
1420 if (ret
&& ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
) {
1421 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
1428 * vpif_enum_input() - ENUMINPUT handler
1430 * @priv: file handle
1431 * @input: ptr to input structure
1433 static int vpif_enum_input(struct file
*file
, void *priv
,
1434 struct v4l2_input
*input
)
1437 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1438 struct vpif_capture_chan_config
*chan_cfg
;
1439 struct vpif_fh
*fh
= priv
;
1440 struct channel_obj
*ch
= fh
->channel
;
1442 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1444 if (input
->index
>= chan_cfg
->input_count
) {
1445 vpif_dbg(1, debug
, "Invalid input index\n");
1449 memcpy(input
, &chan_cfg
->inputs
[input
->index
].input
,
1455 * vpif_g_input() - Get INPUT handler
1457 * @priv: file handle
1458 * @index: ptr to input index
1460 static int vpif_g_input(struct file
*file
, void *priv
, unsigned int *index
)
1462 struct vpif_fh
*fh
= priv
;
1463 struct channel_obj
*ch
= fh
->channel
;
1465 *index
= ch
->input_idx
;
1470 * vpif_s_input() - Set INPUT handler
1472 * @priv: file handle
1473 * @index: input index
1475 static int vpif_s_input(struct file
*file
, void *priv
, unsigned int index
)
1477 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1478 struct vpif_capture_chan_config
*chan_cfg
;
1479 struct vpif_fh
*fh
= priv
;
1480 struct channel_obj
*ch
= fh
->channel
;
1481 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1484 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1486 if (index
>= chan_cfg
->input_count
)
1489 if (common
->started
) {
1490 vpif_err("Streaming in progress\n");
1494 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1495 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1496 if (!fh
->initialized
) {
1497 vpif_dbg(1, debug
, "Channel Busy\n");
1502 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1506 fh
->initialized
= 1;
1507 return vpif_set_input(config
, ch
, index
);
1511 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1513 * @priv: file handle
1514 * @index: input index
1516 static int vpif_enum_fmt_vid_cap(struct file
*file
, void *priv
,
1517 struct v4l2_fmtdesc
*fmt
)
1519 struct vpif_fh
*fh
= priv
;
1520 struct channel_obj
*ch
= fh
->channel
;
1522 if (fmt
->index
!= 0) {
1523 vpif_dbg(1, debug
, "Invalid format index\n");
1527 /* Fill in the information about format */
1528 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
) {
1529 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1530 strcpy(fmt
->description
, "Raw Mode -Bayer Pattern GrRBGb");
1531 fmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
1533 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1534 strcpy(fmt
->description
, "YCbCr4:2:2 YC Planar");
1535 fmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
1541 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1543 * @priv: file handle
1544 * @fmt: ptr to v4l2 format structure
1546 static int vpif_try_fmt_vid_cap(struct file
*file
, void *priv
,
1547 struct v4l2_format
*fmt
)
1549 struct vpif_fh
*fh
= priv
;
1550 struct channel_obj
*ch
= fh
->channel
;
1551 struct v4l2_pix_format
*pixfmt
= &fmt
->fmt
.pix
;
1553 return vpif_check_format(ch
, pixfmt
, 1);
1558 * vpif_g_fmt_vid_cap() - Set INPUT handler
1560 * @priv: file handle
1561 * @fmt: ptr to v4l2 format structure
1563 static int vpif_g_fmt_vid_cap(struct file
*file
, void *priv
,
1564 struct v4l2_format
*fmt
)
1566 struct vpif_fh
*fh
= priv
;
1567 struct channel_obj
*ch
= fh
->channel
;
1568 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1570 /* Check the validity of the buffer type */
1571 if (common
->fmt
.type
!= fmt
->type
)
1574 /* Fill in the information about format */
1580 * vpif_s_fmt_vid_cap() - Set FMT handler
1582 * @priv: file handle
1583 * @fmt: ptr to v4l2 format structure
1585 static int vpif_s_fmt_vid_cap(struct file
*file
, void *priv
,
1586 struct v4l2_format
*fmt
)
1588 struct vpif_fh
*fh
= priv
;
1589 struct channel_obj
*ch
= fh
->channel
;
1590 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1591 struct v4l2_pix_format
*pixfmt
;
1594 vpif_dbg(2, debug
, "%s\n", __func__
);
1596 /* If streaming is started, return error */
1597 if (common
->started
) {
1598 vpif_dbg(1, debug
, "Streaming is started\n");
1602 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1603 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1604 if (!fh
->initialized
) {
1605 vpif_dbg(1, debug
, "Channel Busy\n");
1610 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1614 fh
->initialized
= 1;
1616 pixfmt
= &fmt
->fmt
.pix
;
1617 /* Check for valid field format */
1618 ret
= vpif_check_format(ch
, pixfmt
, 0);
1622 /* store the format in the channel object */
1628 * vpif_querycap() - QUERYCAP handler
1630 * @priv: file handle
1631 * @cap: ptr to v4l2_capability structure
1633 static int vpif_querycap(struct file
*file
, void *priv
,
1634 struct v4l2_capability
*cap
)
1636 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1638 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
1639 strlcpy(cap
->driver
, "vpif capture", sizeof(cap
->driver
));
1640 strlcpy(cap
->bus_info
, "VPIF Platform", sizeof(cap
->bus_info
));
1641 strlcpy(cap
->card
, config
->card_name
, sizeof(cap
->card
));
1647 * vpif_g_priority() - get priority handler
1649 * @priv: file handle
1650 * @prio: ptr to v4l2_priority structure
1652 static int vpif_g_priority(struct file
*file
, void *priv
,
1653 enum v4l2_priority
*prio
)
1655 struct vpif_fh
*fh
= priv
;
1656 struct channel_obj
*ch
= fh
->channel
;
1658 *prio
= v4l2_prio_max(&ch
->prio
);
1664 * vpif_s_priority() - set priority handler
1666 * @priv: file handle
1667 * @prio: ptr to v4l2_priority structure
1669 static int vpif_s_priority(struct file
*file
, void *priv
, enum v4l2_priority p
)
1671 struct vpif_fh
*fh
= priv
;
1672 struct channel_obj
*ch
= fh
->channel
;
1674 return v4l2_prio_change(&ch
->prio
, &fh
->prio
, p
);
1678 * vpif_cropcap() - cropcap handler
1680 * @priv: file handle
1681 * @crop: ptr to v4l2_cropcap structure
1683 static int vpif_cropcap(struct file
*file
, void *priv
,
1684 struct v4l2_cropcap
*crop
)
1686 struct vpif_fh
*fh
= priv
;
1687 struct channel_obj
*ch
= fh
->channel
;
1688 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1690 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= crop
->type
)
1693 crop
->bounds
.left
= 0;
1694 crop
->bounds
.top
= 0;
1695 crop
->bounds
.height
= common
->height
;
1696 crop
->bounds
.width
= common
->width
;
1697 crop
->defrect
= crop
->bounds
;
1702 * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
1704 * @priv: file handle
1705 * @timings: input timings
1708 vpif_enum_dv_timings(struct file
*file
, void *priv
,
1709 struct v4l2_enum_dv_timings
*timings
)
1711 struct vpif_fh
*fh
= priv
;
1712 struct channel_obj
*ch
= fh
->channel
;
1715 ret
= v4l2_subdev_call(ch
->sd
, video
, enum_dv_timings
, timings
);
1716 if (ret
== -ENOIOCTLCMD
&& ret
== -ENODEV
)
1722 * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler
1724 * @priv: file handle
1725 * @timings: input timings
1728 vpif_query_dv_timings(struct file
*file
, void *priv
,
1729 struct v4l2_dv_timings
*timings
)
1731 struct vpif_fh
*fh
= priv
;
1732 struct channel_obj
*ch
= fh
->channel
;
1735 ret
= v4l2_subdev_call(ch
->sd
, video
, query_dv_timings
, timings
);
1736 if (ret
== -ENOIOCTLCMD
&& ret
== -ENODEV
)
1742 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1744 * @priv: file handle
1745 * @timings: digital video timings
1747 static int vpif_s_dv_timings(struct file
*file
, void *priv
,
1748 struct v4l2_dv_timings
*timings
)
1750 struct vpif_fh
*fh
= priv
;
1751 struct channel_obj
*ch
= fh
->channel
;
1752 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
1753 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
1754 struct video_obj
*vid_ch
= &ch
->video
;
1755 struct v4l2_bt_timings
*bt
= &vid_ch
->dv_timings
.bt
;
1758 if (timings
->type
!= V4L2_DV_BT_656_1120
) {
1759 vpif_dbg(2, debug
, "Timing type not defined\n");
1763 /* Configure subdevice timings, if any */
1764 ret
= v4l2_subdev_call(ch
->sd
, video
, s_dv_timings
, timings
);
1765 if (ret
== -ENOIOCTLCMD
|| ret
== -ENODEV
)
1768 vpif_dbg(2, debug
, "Error setting custom DV timings\n");
1772 if (!(timings
->bt
.width
&& timings
->bt
.height
&&
1773 (timings
->bt
.hbackporch
||
1774 timings
->bt
.hfrontporch
||
1775 timings
->bt
.hsync
) &&
1776 timings
->bt
.vfrontporch
&&
1777 (timings
->bt
.vbackporch
||
1778 timings
->bt
.vsync
))) {
1779 vpif_dbg(2, debug
, "Timings for width, height, "
1780 "horizontal back porch, horizontal sync, "
1781 "horizontal front porch, vertical back porch, "
1782 "vertical sync and vertical back porch "
1783 "must be defined\n");
1787 vid_ch
->dv_timings
= *timings
;
1789 /* Configure video port timings */
1791 std_info
->eav2sav
= bt
->hbackporch
+ bt
->hfrontporch
+
1793 std_info
->sav2eav
= bt
->width
;
1796 std_info
->l3
= bt
->vsync
+ bt
->vbackporch
+ 1;
1798 if (bt
->interlaced
) {
1799 if (bt
->il_vbackporch
|| bt
->il_vfrontporch
|| bt
->il_vsync
) {
1800 std_info
->vsize
= bt
->height
* 2 +
1801 bt
->vfrontporch
+ bt
->vsync
+ bt
->vbackporch
+
1802 bt
->il_vfrontporch
+ bt
->il_vsync
+
1804 std_info
->l5
= std_info
->vsize
/2 -
1805 (bt
->vfrontporch
- 1);
1806 std_info
->l7
= std_info
->vsize
/2 + 1;
1807 std_info
->l9
= std_info
->l7
+ bt
->il_vsync
+
1808 bt
->il_vbackporch
+ 1;
1809 std_info
->l11
= std_info
->vsize
-
1810 (bt
->il_vfrontporch
- 1);
1812 vpif_dbg(2, debug
, "Required timing values for "
1813 "interlaced BT format missing\n");
1817 std_info
->vsize
= bt
->height
+ bt
->vfrontporch
+
1818 bt
->vsync
+ bt
->vbackporch
;
1819 std_info
->l5
= std_info
->vsize
- (bt
->vfrontporch
- 1);
1821 strncpy(std_info
->name
, "Custom timings BT656/1120", VPIF_MAX_NAME
);
1822 std_info
->width
= bt
->width
;
1823 std_info
->height
= bt
->height
;
1824 std_info
->frm_fmt
= bt
->interlaced
? 0 : 1;
1825 std_info
->ycmux_mode
= 0;
1826 std_info
->capture_format
= 0;
1827 std_info
->vbi_supported
= 0;
1828 std_info
->hd_sd
= 1;
1829 std_info
->stdid
= 0;
1836 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1838 * @priv: file handle
1839 * @timings: digital video timings
1841 static int vpif_g_dv_timings(struct file
*file
, void *priv
,
1842 struct v4l2_dv_timings
*timings
)
1844 struct vpif_fh
*fh
= priv
;
1845 struct channel_obj
*ch
= fh
->channel
;
1846 struct video_obj
*vid_ch
= &ch
->video
;
1848 *timings
= vid_ch
->dv_timings
;
1854 * vpif_g_chip_ident() - Identify the chip
1856 * @priv: file handle
1857 * @chip: chip identity
1859 * Returns zero or -EINVAL if read operations fails.
1861 static int vpif_g_chip_ident(struct file
*file
, void *priv
,
1862 struct v4l2_dbg_chip_ident
*chip
)
1864 chip
->ident
= V4L2_IDENT_NONE
;
1866 if (chip
->match
.type
!= V4L2_CHIP_MATCH_I2C_DRIVER
&&
1867 chip
->match
.type
!= V4L2_CHIP_MATCH_I2C_ADDR
) {
1868 vpif_dbg(2, debug
, "match_type is invalid.\n");
1872 return v4l2_device_call_until_err(&vpif_obj
.v4l2_dev
, 0, core
,
1873 g_chip_ident
, chip
);
1876 #ifdef CONFIG_VIDEO_ADV_DEBUG
1878 * vpif_dbg_g_register() - Read register
1880 * @priv: file handle
1881 * @reg: register to be read
1884 * Returns zero or -EINVAL if read operations fails.
1886 static int vpif_dbg_g_register(struct file
*file
, void *priv
,
1887 struct v4l2_dbg_register
*reg
){
1888 struct vpif_fh
*fh
= priv
;
1889 struct channel_obj
*ch
= fh
->channel
;
1891 return v4l2_subdev_call(ch
->sd
, core
, g_register
, reg
);
1895 * vpif_dbg_s_register() - Write to register
1897 * @priv: file handle
1898 * @reg: register to be modified
1901 * Returns zero or -EINVAL if write operations fails.
1903 static int vpif_dbg_s_register(struct file
*file
, void *priv
,
1904 struct v4l2_dbg_register
*reg
){
1905 struct vpif_fh
*fh
= priv
;
1906 struct channel_obj
*ch
= fh
->channel
;
1908 return v4l2_subdev_call(ch
->sd
, core
, s_register
, reg
);
1913 * vpif_log_status() - Status information
1915 * @priv: file handle
1919 static int vpif_log_status(struct file
*filep
, void *priv
)
1921 /* status for sub devices */
1922 v4l2_device_call_all(&vpif_obj
.v4l2_dev
, 0, core
, log_status
);
1927 /* vpif capture ioctl operations */
1928 static const struct v4l2_ioctl_ops vpif_ioctl_ops
= {
1929 .vidioc_querycap
= vpif_querycap
,
1930 .vidioc_g_priority
= vpif_g_priority
,
1931 .vidioc_s_priority
= vpif_s_priority
,
1932 .vidioc_enum_fmt_vid_cap
= vpif_enum_fmt_vid_cap
,
1933 .vidioc_g_fmt_vid_cap
= vpif_g_fmt_vid_cap
,
1934 .vidioc_s_fmt_vid_cap
= vpif_s_fmt_vid_cap
,
1935 .vidioc_try_fmt_vid_cap
= vpif_try_fmt_vid_cap
,
1936 .vidioc_enum_input
= vpif_enum_input
,
1937 .vidioc_s_input
= vpif_s_input
,
1938 .vidioc_g_input
= vpif_g_input
,
1939 .vidioc_reqbufs
= vpif_reqbufs
,
1940 .vidioc_querybuf
= vpif_querybuf
,
1941 .vidioc_querystd
= vpif_querystd
,
1942 .vidioc_s_std
= vpif_s_std
,
1943 .vidioc_g_std
= vpif_g_std
,
1944 .vidioc_qbuf
= vpif_qbuf
,
1945 .vidioc_dqbuf
= vpif_dqbuf
,
1946 .vidioc_streamon
= vpif_streamon
,
1947 .vidioc_streamoff
= vpif_streamoff
,
1948 .vidioc_cropcap
= vpif_cropcap
,
1949 .vidioc_enum_dv_timings
= vpif_enum_dv_timings
,
1950 .vidioc_query_dv_timings
= vpif_query_dv_timings
,
1951 .vidioc_s_dv_timings
= vpif_s_dv_timings
,
1952 .vidioc_g_dv_timings
= vpif_g_dv_timings
,
1953 .vidioc_g_chip_ident
= vpif_g_chip_ident
,
1954 #ifdef CONFIG_VIDEO_ADV_DEBUG
1955 .vidioc_g_register
= vpif_dbg_g_register
,
1956 .vidioc_s_register
= vpif_dbg_s_register
,
1958 .vidioc_log_status
= vpif_log_status
,
1961 /* vpif file operations */
1962 static struct v4l2_file_operations vpif_fops
= {
1963 .owner
= THIS_MODULE
,
1965 .release
= vpif_release
,
1966 .unlocked_ioctl
= video_ioctl2
,
1971 /* vpif video template */
1972 static struct video_device vpif_video_template
= {
1976 .ioctl_ops
= &vpif_ioctl_ops
,
1980 * initialize_vpif() - Initialize vpif data structures
1982 * Allocate memory for data structures and initialize them
1984 static int initialize_vpif(void)
1987 int free_channel_objects_index
;
1989 /* Default number of buffers should be 3 */
1990 if ((ch0_numbuffers
> 0) &&
1991 (ch0_numbuffers
< config_params
.min_numbuffers
))
1992 ch0_numbuffers
= config_params
.min_numbuffers
;
1993 if ((ch1_numbuffers
> 0) &&
1994 (ch1_numbuffers
< config_params
.min_numbuffers
))
1995 ch1_numbuffers
= config_params
.min_numbuffers
;
1997 /* Set buffer size to min buffers size if it is invalid */
1998 if (ch0_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
])
2000 config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
];
2001 if (ch1_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
])
2003 config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
];
2005 config_params
.numbuffers
[VPIF_CHANNEL0_VIDEO
] = ch0_numbuffers
;
2006 config_params
.numbuffers
[VPIF_CHANNEL1_VIDEO
] = ch1_numbuffers
;
2007 if (ch0_numbuffers
) {
2008 config_params
.channel_bufsize
[VPIF_CHANNEL0_VIDEO
]
2011 if (ch1_numbuffers
) {
2012 config_params
.channel_bufsize
[VPIF_CHANNEL1_VIDEO
]
2016 /* Allocate memory for six channel objects */
2017 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2019 kzalloc(sizeof(*vpif_obj
.dev
[i
]), GFP_KERNEL
);
2020 /* If memory allocation fails, return error */
2021 if (!vpif_obj
.dev
[i
]) {
2022 free_channel_objects_index
= i
;
2024 goto vpif_init_free_channel_objects
;
2029 vpif_init_free_channel_objects
:
2030 for (j
= 0; j
< free_channel_objects_index
; j
++)
2031 kfree(vpif_obj
.dev
[j
]);
2036 * vpif_probe : This function probes the vpif capture driver
2037 * @pdev: platform device pointer
2039 * This creates device entries by register itself to the V4L2 driver and
2040 * initializes fields of each channel objects
2042 static __init
int vpif_probe(struct platform_device
*pdev
)
2044 struct vpif_subdev_info
*subdevdata
;
2045 struct vpif_capture_config
*config
;
2048 struct i2c_adapter
*i2c_adap
;
2049 struct channel_obj
*ch
;
2050 struct common_obj
*common
;
2051 struct video_device
*vfd
;
2052 struct resource
*res
;
2056 vpif_dev
= &pdev
->dev
;
2058 err
= initialize_vpif();
2060 v4l2_err(vpif_dev
->driver
, "Error initializing vpif\n");
2064 err
= v4l2_device_register(vpif_dev
, &vpif_obj
.v4l2_dev
);
2066 v4l2_err(vpif_dev
->driver
, "Error registering v4l2 device\n");
2070 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, res_idx
))) {
2071 for (i
= res
->start
; i
<= res
->end
; i
++) {
2072 if (request_irq(i
, vpif_channel_isr
, IRQF_SHARED
,
2073 "VPIF_Capture", (void *)
2074 (&vpif_obj
.dev
[res_idx
]->channel_id
))) {
2076 for (j
= 0; j
< i
; j
++)
2077 free_irq(j
, (void *)
2078 (&vpif_obj
.dev
[res_idx
]->channel_id
));
2085 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2086 /* Get the pointer to the channel object */
2087 ch
= vpif_obj
.dev
[i
];
2088 /* Allocate memory for video device */
2089 vfd
= video_device_alloc();
2091 for (j
= 0; j
< i
; j
++) {
2092 ch
= vpif_obj
.dev
[j
];
2093 video_device_release(ch
->video_dev
);
2099 /* Initialize field of video device */
2100 *vfd
= vpif_video_template
;
2101 vfd
->v4l2_dev
= &vpif_obj
.v4l2_dev
;
2102 vfd
->release
= video_device_release
;
2103 snprintf(vfd
->name
, sizeof(vfd
->name
),
2104 "VPIF_Capture_DRIVER_V%s",
2105 VPIF_CAPTURE_VERSION
);
2106 /* Set video_dev to the video device */
2107 ch
->video_dev
= vfd
;
2110 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2112 size
= resource_size(res
);
2113 /* The resources are divided into two equal memory and when we
2114 * have HD output we can add them together
2116 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
2117 ch
= vpif_obj
.dev
[j
];
2119 /* only enabled if second resource exists */
2120 config_params
.video_limit
[ch
->channel_id
] = 0;
2122 config_params
.video_limit
[ch
->channel_id
] =
2127 i2c_adap
= i2c_get_adapter(1);
2128 config
= pdev
->dev
.platform_data
;
2130 subdev_count
= config
->subdev_count
;
2131 vpif_obj
.sd
= kzalloc(sizeof(struct v4l2_subdev
*) * subdev_count
,
2133 if (vpif_obj
.sd
== NULL
) {
2134 vpif_err("unable to allocate memory for subdevice pointers\n");
2139 for (i
= 0; i
< subdev_count
; i
++) {
2140 subdevdata
= &config
->subdev_info
[i
];
2142 v4l2_i2c_new_subdev_board(&vpif_obj
.v4l2_dev
,
2144 &subdevdata
->board_info
,
2147 if (!vpif_obj
.sd
[i
]) {
2148 vpif_err("Error registering v4l2 subdevice\n");
2149 goto probe_subdev_out
;
2151 v4l2_info(&vpif_obj
.v4l2_dev
, "registered sub device %s\n",
2155 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
2156 ch
= vpif_obj
.dev
[j
];
2158 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
2159 spin_lock_init(&common
->irqlock
);
2160 mutex_init(&common
->lock
);
2161 ch
->video_dev
->lock
= &common
->lock
;
2162 /* Initialize prio member of channel object */
2163 v4l2_prio_init(&ch
->prio
);
2164 video_set_drvdata(ch
->video_dev
, ch
);
2166 /* select input 0 */
2167 err
= vpif_set_input(config
, ch
, 0);
2171 err
= video_register_device(ch
->video_dev
,
2172 VFL_TYPE_GRABBER
, (j
? 1 : 0));
2176 v4l2_info(&vpif_obj
.v4l2_dev
, "VPIF capture driver initialized\n");
2180 for (k
= 0; k
< j
; k
++) {
2181 /* Get the pointer to the channel object */
2182 ch
= vpif_obj
.dev
[k
];
2183 /* Unregister video device */
2184 video_unregister_device(ch
->video_dev
);
2187 /* free sub devices memory */
2191 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2192 ch
= vpif_obj
.dev
[i
];
2193 /* Note: does nothing if ch->video_dev == NULL */
2194 video_device_release(ch
->video_dev
);
2197 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
2198 for (i
= 0; i
< res_idx
; i
++) {
2199 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, i
);
2200 for (j
= res
->start
; j
<= res
->end
; j
++)
2201 free_irq(j
, (void *)(&vpif_obj
.dev
[i
]->channel_id
));
2207 * vpif_remove() - driver remove handler
2208 * @device: ptr to platform device structure
2210 * The vidoe device is unregistered
2212 static int vpif_remove(struct platform_device
*device
)
2215 struct channel_obj
*ch
;
2217 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
2219 /* un-register device */
2220 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2221 /* Get the pointer to the channel object */
2222 ch
= vpif_obj
.dev
[i
];
2223 /* Unregister video device */
2224 video_unregister_device(ch
->video_dev
);
2231 * vpif_suspend: vpif device suspend
2233 static int vpif_suspend(struct device
*dev
)
2236 struct common_obj
*common
;
2237 struct channel_obj
*ch
;
2240 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2241 /* Get the pointer to the channel object */
2242 ch
= vpif_obj
.dev
[i
];
2243 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
2244 mutex_lock(&common
->lock
);
2245 if (ch
->usrs
&& common
->io_usrs
) {
2246 /* Disable channel */
2247 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
2249 channel0_intr_enable(0);
2251 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
2252 common
->started
== 2) {
2254 channel1_intr_enable(0);
2257 mutex_unlock(&common
->lock
);
2264 * vpif_resume: vpif device suspend
2266 static int vpif_resume(struct device
*dev
)
2268 struct common_obj
*common
;
2269 struct channel_obj
*ch
;
2272 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2273 /* Get the pointer to the channel object */
2274 ch
= vpif_obj
.dev
[i
];
2275 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
2276 mutex_lock(&common
->lock
);
2277 if (ch
->usrs
&& common
->io_usrs
) {
2278 /* Disable channel */
2279 if (ch
->channel_id
== VPIF_CHANNEL0_VIDEO
) {
2281 channel0_intr_enable(1);
2283 if (ch
->channel_id
== VPIF_CHANNEL1_VIDEO
||
2284 common
->started
== 2) {
2286 channel1_intr_enable(1);
2289 mutex_unlock(&common
->lock
);
2295 static const struct dev_pm_ops vpif_dev_pm_ops
= {
2296 .suspend
= vpif_suspend
,
2297 .resume
= vpif_resume
,
2300 #define vpif_pm_ops (&vpif_dev_pm_ops)
2302 #define vpif_pm_ops NULL
2305 static __refdata
struct platform_driver vpif_driver
= {
2307 .name
= "vpif_capture",
2308 .owner
= THIS_MODULE
,
2311 .probe
= vpif_probe
,
2312 .remove
= vpif_remove
,
2316 * vpif_init: initialize the vpif driver
2318 * This function registers device and driver to the kernel, requests irq
2319 * handler and allocates memory
2320 * for channel objects
2322 static __init
int vpif_init(void)
2324 return platform_driver_register(&vpif_driver
);
2328 * vpif_cleanup : This function clean up the vpif capture resources
2330 * This will un-registers device and driver to the kernel, frees
2331 * requested irq handler and de-allocates memory allocated for channel
2334 static void vpif_cleanup(void)
2336 struct platform_device
*pdev
;
2337 struct resource
*res
;
2341 pdev
= container_of(vpif_dev
, struct platform_device
, dev
);
2342 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, i
))) {
2343 for (irq_num
= res
->start
; irq_num
<= res
->end
; irq_num
++)
2345 (void *)(&vpif_obj
.dev
[i
]->channel_id
));
2349 platform_driver_unregister(&vpif_driver
);
2352 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++)
2353 kfree(vpif_obj
.dev
[i
]);
2356 /* Function for module initialization and cleanup */
2357 module_init(vpif_init
);
2358 module_exit(vpif_cleanup
);