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/version.h>
37 #include <linux/slab.h>
38 #include <media/v4l2-device.h>
39 #include <media/v4l2-ioctl.h>
40 #include <media/v4l2-chip-ident.h>
42 #include "vpif_capture.h"
45 MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
46 MODULE_LICENSE("GPL");
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
;
85 * vpif_uservirt_to_phys : translate user/virtual address to phy address
86 * @virtp: user/virtual address
88 * This inline function is used to convert user space virtual address to
91 static inline u32
vpif_uservirt_to_phys(u32 virtp
)
93 unsigned long physp
= 0;
94 struct mm_struct
*mm
= current
->mm
;
95 struct vm_area_struct
*vma
;
97 vma
= find_vma(mm
, virtp
);
99 /* For kernel direct-mapped memory, take the easy way */
100 if (virtp
>= PAGE_OFFSET
)
101 physp
= virt_to_phys((void *)virtp
);
102 else if (vma
&& (vma
->vm_flags
& VM_IO
) && (vma
->vm_pgoff
))
104 * this will catch, kernel-allocated, mmaped-to-usermode
107 physp
= (vma
->vm_pgoff
<< PAGE_SHIFT
) + (virtp
- vma
->vm_start
);
109 /* otherwise, use get_user_pages() for general userland pages */
110 int res
, nr_pages
= 1;
113 down_read(¤t
->mm
->mmap_sem
);
115 res
= get_user_pages(current
, current
->mm
,
116 virtp
, nr_pages
, 1, 0, &pages
, NULL
);
117 up_read(¤t
->mm
->mmap_sem
);
120 physp
= __pa(page_address(&pages
[0]) +
121 (virtp
& ~PAGE_MASK
));
123 vpif_err("get_user_pages failed\n");
131 * buffer_prepare : callback function for buffer prepare
132 * @q : buffer queue ptr
133 * @vb: ptr to video buffer
136 * This is the callback function for buffer prepare when videobuf_qbuf()
137 * function is called. The buffer is prepared and user space virtual address
138 * or user address is converted into physical address
140 static int vpif_buffer_prepare(struct videobuf_queue
*q
,
141 struct videobuf_buffer
*vb
,
142 enum v4l2_field field
)
144 /* Get the file handle object and channel object */
145 struct vpif_fh
*fh
= q
->priv_data
;
146 struct channel_obj
*ch
= fh
->channel
;
147 struct common_obj
*common
;
151 vpif_dbg(2, debug
, "vpif_buffer_prepare\n");
153 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
155 /* If buffer is not initialized, initialize it */
156 if (VIDEOBUF_NEEDS_INIT
== vb
->state
) {
157 vb
->width
= common
->width
;
158 vb
->height
= common
->height
;
159 vb
->size
= vb
->width
* vb
->height
;
162 vb
->state
= VIDEOBUF_PREPARED
;
164 * if user pointer memory mechanism is used, get the physical
165 * address of the buffer
167 if (V4L2_MEMORY_USERPTR
== common
->memory
) {
168 if (0 == vb
->baddr
) {
169 vpif_dbg(1, debug
, "buffer address is 0\n");
173 vb
->boff
= vpif_uservirt_to_phys(vb
->baddr
);
174 if (!IS_ALIGNED(vb
->boff
, 8))
180 if (!IS_ALIGNED((addr
+ common
->ytop_off
), 8) ||
181 !IS_ALIGNED((addr
+ common
->ybtm_off
), 8) ||
182 !IS_ALIGNED((addr
+ common
->ctop_off
), 8) ||
183 !IS_ALIGNED((addr
+ common
->cbtm_off
), 8))
188 vpif_dbg(1, debug
, "buffer_prepare:offset is not aligned to 8 bytes\n");
193 * vpif_buffer_setup : Callback function for buffer setup.
194 * @q: buffer queue ptr
195 * @count: number of buffers
196 * @size: size of the buffer
198 * This callback function is called when reqbuf() is called to adjust
199 * the buffer count and buffer size
201 static int vpif_buffer_setup(struct videobuf_queue
*q
, unsigned int *count
,
204 /* Get the file handle object and channel object */
205 struct vpif_fh
*fh
= q
->priv_data
;
206 struct channel_obj
*ch
= fh
->channel
;
207 struct common_obj
*common
;
209 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
211 vpif_dbg(2, debug
, "vpif_buffer_setup\n");
213 /* If memory type is not mmap, return */
214 if (V4L2_MEMORY_MMAP
!= common
->memory
)
217 /* Calculate the size of the buffer */
218 *size
= config_params
.channel_bufsize
[ch
->channel_id
];
220 if (*count
< config_params
.min_numbuffers
)
221 *count
= config_params
.min_numbuffers
;
226 * vpif_buffer_queue : Callback function to add buffer to DMA queue
227 * @q: ptr to videobuf_queue
228 * @vb: ptr to videobuf_buffer
230 static void vpif_buffer_queue(struct videobuf_queue
*q
,
231 struct videobuf_buffer
*vb
)
233 /* Get the file handle object and channel object */
234 struct vpif_fh
*fh
= q
->priv_data
;
235 struct channel_obj
*ch
= fh
->channel
;
236 struct common_obj
*common
;
238 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
240 vpif_dbg(2, debug
, "vpif_buffer_queue\n");
242 /* add the buffer to the DMA queue */
243 list_add_tail(&vb
->queue
, &common
->dma_queue
);
244 /* Change state of the buffer */
245 vb
->state
= VIDEOBUF_QUEUED
;
249 * vpif_buffer_release : Callback function to free buffer
250 * @q: buffer queue ptr
251 * @vb: ptr to video buffer
253 * This function is called from the videobuf layer to free memory
254 * allocated to the buffers
256 static void vpif_buffer_release(struct videobuf_queue
*q
,
257 struct videobuf_buffer
*vb
)
259 /* Get the file handle object and channel object */
260 struct vpif_fh
*fh
= q
->priv_data
;
261 struct channel_obj
*ch
= fh
->channel
;
262 struct common_obj
*common
;
264 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
266 videobuf_dma_contig_free(q
, vb
);
267 vb
->state
= VIDEOBUF_NEEDS_INIT
;
270 static struct videobuf_queue_ops video_qops
= {
271 .buf_setup
= vpif_buffer_setup
,
272 .buf_prepare
= vpif_buffer_prepare
,
273 .buf_queue
= vpif_buffer_queue
,
274 .buf_release
= vpif_buffer_release
,
277 static u8 channel_first_int
[VPIF_NUMBER_OF_OBJECTS
][2] =
281 * vpif_process_buffer_complete: process a completed buffer
282 * @common: ptr to common channel object
284 * This function time stamp the buffer and mark it as DONE. It also
285 * wake up any process waiting on the QUEUE and set the next buffer
288 static void vpif_process_buffer_complete(struct common_obj
*common
)
290 do_gettimeofday(&common
->cur_frm
->ts
);
291 common
->cur_frm
->state
= VIDEOBUF_DONE
;
292 wake_up_interruptible(&common
->cur_frm
->done
);
293 /* Make curFrm pointing to nextFrm */
294 common
->cur_frm
= common
->next_frm
;
298 * vpif_schedule_next_buffer: set next buffer address for capture
299 * @common : ptr to common channel object
301 * This function will get next buffer from the dma queue and
302 * set the buffer address in the vpif register for capture.
303 * the buffer is marked active
305 static void vpif_schedule_next_buffer(struct common_obj
*common
)
307 unsigned long addr
= 0;
309 common
->next_frm
= list_entry(common
->dma_queue
.next
,
310 struct videobuf_buffer
, queue
);
311 /* Remove that buffer from the buffer queue */
312 list_del(&common
->next_frm
->queue
);
313 common
->next_frm
->state
= VIDEOBUF_ACTIVE
;
314 if (V4L2_MEMORY_USERPTR
== common
->memory
)
315 addr
= common
->next_frm
->boff
;
317 addr
= videobuf_to_dma_contig(common
->next_frm
);
319 /* Set top and bottom field addresses in VPIF registers */
320 common
->set_addr(addr
+ common
->ytop_off
,
321 addr
+ common
->ybtm_off
,
322 addr
+ common
->ctop_off
,
323 addr
+ common
->cbtm_off
);
327 * vpif_channel_isr : ISR handler for vpif capture
329 * @dev_id: dev_id ptr
331 * It changes status of the captured buffer, takes next buffer from the queue
332 * and sets its address in VPIF registers
334 static irqreturn_t
vpif_channel_isr(int irq
, void *dev_id
)
336 struct vpif_device
*dev
= &vpif_obj
;
337 struct common_obj
*common
;
338 struct channel_obj
*ch
;
339 enum v4l2_field field
;
343 channel_id
= *(int *)(dev_id
);
344 ch
= dev
->dev
[channel_id
];
346 field
= ch
->common
[VPIF_VIDEO_INDEX
].fmt
.fmt
.pix
.field
;
348 for (i
= 0; i
< VPIF_NUMBER_OF_OBJECTS
; i
++) {
349 common
= &ch
->common
[i
];
350 /* skip If streaming is not started in this channel */
351 if (0 == common
->started
)
354 /* Check the field format */
355 if (1 == ch
->vpifparams
.std_info
.frm_fmt
) {
356 /* Progressive mode */
357 if (list_empty(&common
->dma_queue
))
360 if (!channel_first_int
[i
][channel_id
])
361 vpif_process_buffer_complete(common
);
363 channel_first_int
[i
][channel_id
] = 0;
365 vpif_schedule_next_buffer(common
);
368 channel_first_int
[i
][channel_id
] = 0;
371 * Interlaced mode. If it is first interrupt, ignore
374 if (channel_first_int
[i
][channel_id
]) {
375 channel_first_int
[i
][channel_id
] = 0;
380 /* Get field id from VPIF registers */
381 fid
= vpif_channel_getfid(ch
->channel_id
);
382 if (fid
!= ch
->field_id
) {
384 * If field id does not match stored
385 * field id, make them in sync
392 /* device field id and local field id are in sync */
394 /* this is even field */
395 if (common
->cur_frm
== common
->next_frm
)
398 /* mark the current buffer as done */
399 vpif_process_buffer_complete(common
);
400 } else if (1 == fid
) {
402 if (list_empty(&common
->dma_queue
) ||
403 (common
->cur_frm
!= common
->next_frm
))
406 vpif_schedule_next_buffer(common
);
414 * vpif_update_std_info() - update standard related info
415 * @ch: ptr to channel object
417 * For a given standard selected by application, update values
418 * in the device data structures
420 static int vpif_update_std_info(struct channel_obj
*ch
)
422 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
423 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
424 const struct vpif_channel_config_params
*config
;
425 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
426 struct video_obj
*vid_ch
= &ch
->video
;
429 vpif_dbg(2, debug
, "vpif_update_std_info\n");
431 for (index
= 0; index
< vpif_ch_params_count
; index
++) {
432 config
= &ch_params
[index
];
433 if (config
->hd_sd
== 0) {
434 vpif_dbg(2, debug
, "SD format\n");
435 if (config
->stdid
& vid_ch
->stdid
) {
436 memcpy(std_info
, config
, sizeof(*config
));
440 vpif_dbg(2, debug
, "HD format\n");
441 if (config
->dv_preset
== vid_ch
->dv_preset
) {
442 memcpy(std_info
, config
, sizeof(*config
));
448 /* standard not found */
449 if (index
== vpif_ch_params_count
)
452 common
->fmt
.fmt
.pix
.width
= std_info
->width
;
453 common
->width
= std_info
->width
;
454 common
->fmt
.fmt
.pix
.height
= std_info
->height
;
455 common
->height
= std_info
->height
;
456 common
->fmt
.fmt
.pix
.bytesperline
= std_info
->width
;
457 vpifparams
->video_params
.hpitch
= std_info
->width
;
458 vpifparams
->video_params
.storage_mode
= std_info
->frm_fmt
;
464 * vpif_calculate_offsets : This function calculates buffers offsets
465 * @ch : ptr to channel object
467 * This function calculates buffer offsets for Y and C in the top and
470 static void vpif_calculate_offsets(struct channel_obj
*ch
)
472 unsigned int hpitch
, vpitch
, sizeimage
;
473 struct video_obj
*vid_ch
= &(ch
->video
);
474 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
475 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
476 enum v4l2_field field
= common
->fmt
.fmt
.pix
.field
;
478 vpif_dbg(2, debug
, "vpif_calculate_offsets\n");
480 if (V4L2_FIELD_ANY
== field
) {
481 if (vpifparams
->std_info
.frm_fmt
)
482 vid_ch
->buf_field
= V4L2_FIELD_NONE
;
484 vid_ch
->buf_field
= V4L2_FIELD_INTERLACED
;
486 vid_ch
->buf_field
= common
->fmt
.fmt
.pix
.field
;
488 if (V4L2_MEMORY_USERPTR
== common
->memory
)
489 sizeimage
= common
->fmt
.fmt
.pix
.sizeimage
;
491 sizeimage
= config_params
.channel_bufsize
[ch
->channel_id
];
493 hpitch
= common
->fmt
.fmt
.pix
.bytesperline
;
494 vpitch
= sizeimage
/ (hpitch
* 2);
496 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
497 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
)) {
498 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
499 common
->ytop_off
= 0;
500 common
->ybtm_off
= hpitch
;
501 common
->ctop_off
= sizeimage
/ 2;
502 common
->cbtm_off
= sizeimage
/ 2 + hpitch
;
503 } else if (V4L2_FIELD_SEQ_TB
== vid_ch
->buf_field
) {
504 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
505 common
->ytop_off
= 0;
506 common
->ybtm_off
= sizeimage
/ 4;
507 common
->ctop_off
= sizeimage
/ 2;
508 common
->cbtm_off
= common
->ctop_off
+ sizeimage
/ 4;
509 } else if (V4L2_FIELD_SEQ_BT
== vid_ch
->buf_field
) {
510 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
511 common
->ybtm_off
= 0;
512 common
->ytop_off
= sizeimage
/ 4;
513 common
->cbtm_off
= sizeimage
/ 2;
514 common
->ctop_off
= common
->cbtm_off
+ sizeimage
/ 4;
516 if ((V4L2_FIELD_NONE
== vid_ch
->buf_field
) ||
517 (V4L2_FIELD_INTERLACED
== vid_ch
->buf_field
))
518 vpifparams
->video_params
.storage_mode
= 1;
520 vpifparams
->video_params
.storage_mode
= 0;
522 if (1 == vpifparams
->std_info
.frm_fmt
)
523 vpifparams
->video_params
.hpitch
=
524 common
->fmt
.fmt
.pix
.bytesperline
;
526 if ((field
== V4L2_FIELD_ANY
)
527 || (field
== V4L2_FIELD_INTERLACED
))
528 vpifparams
->video_params
.hpitch
=
529 common
->fmt
.fmt
.pix
.bytesperline
* 2;
531 vpifparams
->video_params
.hpitch
=
532 common
->fmt
.fmt
.pix
.bytesperline
;
535 ch
->vpifparams
.video_params
.stdid
= vpifparams
->std_info
.stdid
;
539 * vpif_config_format: configure default frame format in the device
540 * ch : ptr to channel object
542 static void vpif_config_format(struct channel_obj
*ch
)
544 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
546 vpif_dbg(2, debug
, "vpif_config_format\n");
548 common
->fmt
.fmt
.pix
.field
= V4L2_FIELD_ANY
;
549 if (config_params
.numbuffers
[ch
->channel_id
] == 0)
550 common
->memory
= V4L2_MEMORY_USERPTR
;
552 common
->memory
= V4L2_MEMORY_MMAP
;
554 common
->fmt
.fmt
.pix
.sizeimage
555 = config_params
.channel_bufsize
[ch
->channel_id
];
557 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
)
558 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_SBGGR8
;
560 common
->fmt
.fmt
.pix
.pixelformat
= V4L2_PIX_FMT_YUV422P
;
561 common
->fmt
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
565 * vpif_get_default_field() - Get default field type based on interface
566 * @vpif_params - ptr to vpif params
568 static inline enum v4l2_field
vpif_get_default_field(
569 struct vpif_interface
*iface
)
571 return (iface
->if_type
== VPIF_IF_RAW_BAYER
) ? V4L2_FIELD_NONE
:
572 V4L2_FIELD_INTERLACED
;
576 * vpif_check_format() - check given pixel format for compatibility
578 * @pixfmt - Given pixel format
579 * @update - update the values as per hardware requirement
581 * Check the application pixel format for S_FMT and update the input
582 * values as per hardware limits for TRY_FMT. The default pixel and
583 * field format is selected based on interface type.
585 static int vpif_check_format(struct channel_obj
*ch
,
586 struct v4l2_pix_format
*pixfmt
,
589 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
590 struct vpif_params
*vpif_params
= &ch
->vpifparams
;
591 enum v4l2_field field
= pixfmt
->field
;
592 u32 sizeimage
, hpitch
, vpitch
;
595 vpif_dbg(2, debug
, "vpif_check_format\n");
597 * first check for the pixel format. If if_type is Raw bayer,
598 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
599 * V4L2_PIX_FMT_YUV422P is supported
601 if (vpif_params
->iface
.if_type
== VPIF_IF_RAW_BAYER
) {
602 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_SBGGR8
) {
604 vpif_dbg(2, debug
, "invalid pix format\n");
607 pixfmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
610 if (pixfmt
->pixelformat
!= V4L2_PIX_FMT_YUV422P
) {
612 vpif_dbg(2, debug
, "invalid pixel format\n");
615 pixfmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
619 if (!(VPIF_VALID_FIELD(field
))) {
621 vpif_dbg(2, debug
, "invalid field format\n");
625 * By default use FIELD_NONE for RAW Bayer capture
626 * and FIELD_INTERLACED for other interfaces
628 field
= vpif_get_default_field(&vpif_params
->iface
);
629 } else if (field
== V4L2_FIELD_ANY
)
630 /* unsupported field. Use default */
631 field
= vpif_get_default_field(&vpif_params
->iface
);
633 /* validate the hpitch */
634 hpitch
= pixfmt
->bytesperline
;
635 if (hpitch
< vpif_params
->std_info
.width
) {
637 vpif_dbg(2, debug
, "invalid hpitch\n");
640 hpitch
= vpif_params
->std_info
.width
;
643 if (V4L2_MEMORY_USERPTR
== common
->memory
)
644 sizeimage
= pixfmt
->sizeimage
;
646 sizeimage
= config_params
.channel_bufsize
[ch
->channel_id
];
648 vpitch
= sizeimage
/ (hpitch
* 2);
650 /* validate the vpitch */
651 if (vpitch
< vpif_params
->std_info
.height
) {
653 vpif_dbg(2, debug
, "Invalid vpitch\n");
656 vpitch
= vpif_params
->std_info
.height
;
659 /* Check for 8 byte alignment */
660 if (!ALIGN(hpitch
, 8)) {
662 vpif_dbg(2, debug
, "invalid pitch alignment\n");
665 /* adjust to next 8 byte boundary */
666 hpitch
= (((hpitch
+ 7) / 8) * 8);
668 /* if update is set, modify the bytesperline and sizeimage */
670 pixfmt
->bytesperline
= hpitch
;
671 pixfmt
->sizeimage
= hpitch
* vpitch
* 2;
674 * Image width and height is always based on current standard width and
677 pixfmt
->width
= common
->fmt
.fmt
.pix
.width
;
678 pixfmt
->height
= common
->fmt
.fmt
.pix
.height
;
685 * vpif_config_addr() - function to configure buffer address in vpif
687 * @muxmode - channel mux mode
689 static void vpif_config_addr(struct channel_obj
*ch
, int muxmode
)
691 struct common_obj
*common
;
693 vpif_dbg(2, debug
, "vpif_config_addr\n");
695 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
697 if (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)
698 common
->set_addr
= ch1_set_videobuf_addr
;
699 else if (2 == muxmode
)
700 common
->set_addr
= ch0_set_videobuf_addr_yc_nmux
;
702 common
->set_addr
= ch0_set_videobuf_addr
;
706 * vpfe_mmap : It is used to map kernel space buffers into user spaces
707 * @filep: file pointer
708 * @vma: ptr to vm_area_struct
710 static int vpif_mmap(struct file
*filep
, struct vm_area_struct
*vma
)
712 /* Get the channel object and file handle object */
713 struct vpif_fh
*fh
= filep
->private_data
;
714 struct channel_obj
*ch
= fh
->channel
;
715 struct common_obj
*common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
717 vpif_dbg(2, debug
, "vpif_mmap\n");
719 return videobuf_mmap_mapper(&common
->buffer_queue
, vma
);
723 * vpif_poll: It is used for select/poll system call
724 * @filep: file pointer
725 * @wait: poll table to wait
727 static unsigned int vpif_poll(struct file
*filep
, poll_table
* wait
)
729 struct vpif_fh
*fh
= filep
->private_data
;
730 struct channel_obj
*channel
= fh
->channel
;
731 struct common_obj
*common
= &(channel
->common
[VPIF_VIDEO_INDEX
]);
733 vpif_dbg(2, debug
, "vpif_poll\n");
736 return videobuf_poll_stream(filep
, &common
->buffer_queue
, wait
);
741 * vpif_open : vpif open handler
744 * It creates object of file handle structure and stores it in private_data
745 * member of filepointer
747 static int vpif_open(struct file
*filep
)
749 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
750 struct video_device
*vdev
= video_devdata(filep
);
751 struct common_obj
*common
;
752 struct video_obj
*vid_ch
;
753 struct channel_obj
*ch
;
757 vpif_dbg(2, debug
, "vpif_open\n");
759 ch
= video_get_drvdata(vdev
);
762 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
764 if (NULL
== ch
->curr_subdev_info
) {
766 * search through the sub device to see a registered
767 * sub device and make it as current sub device
769 for (i
= 0; i
< config
->subdev_count
; i
++) {
770 if (vpif_obj
.sd
[i
]) {
771 /* the sub device is registered */
772 ch
->curr_subdev_info
= &config
->subdev_info
[i
];
773 /* make first input as the current input */
774 vid_ch
->input_idx
= 0;
778 if (i
== config
->subdev_count
) {
779 vpif_err("No sub device registered\n");
784 /* Allocate memory for the file handle object */
785 fh
= kzalloc(sizeof(struct vpif_fh
), GFP_KERNEL
);
787 vpif_err("unable to allocate memory for file handle object\n");
791 /* store pointer to fh in private_data member of filep */
792 filep
->private_data
= fh
;
795 /* If decoder is not initialized. initialize it */
796 if (!ch
->initialized
) {
799 memset(&(ch
->vpifparams
), 0, sizeof(struct vpif_params
));
801 /* Increment channel usrs counter */
803 /* Set io_allowed member to false */
804 fh
->io_allowed
[VPIF_VIDEO_INDEX
] = 0;
805 /* Initialize priority of this instance to default priority */
806 fh
->prio
= V4L2_PRIORITY_UNSET
;
807 v4l2_prio_open(&ch
->prio
, &fh
->prio
);
812 * vpif_release : function to clean up file close
813 * @filep: file pointer
815 * This function deletes buffer queue, frees the buffers and the vpfe file
818 static int vpif_release(struct file
*filep
)
820 struct vpif_fh
*fh
= filep
->private_data
;
821 struct channel_obj
*ch
= fh
->channel
;
822 struct common_obj
*common
;
824 vpif_dbg(2, debug
, "vpif_release\n");
826 common
= &ch
->common
[VPIF_VIDEO_INDEX
];
828 /* if this instance is doing IO */
829 if (fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
830 /* Reset io_usrs member of channel object */
832 /* Disable channel as per its device type and channel id */
833 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
835 channel0_intr_enable(0);
837 if ((VPIF_CHANNEL1_VIDEO
== ch
->channel_id
) ||
838 (2 == common
->started
)) {
840 channel1_intr_enable(0);
843 /* Free buffers allocated */
844 videobuf_queue_cancel(&common
->buffer_queue
);
845 videobuf_mmap_free(&common
->buffer_queue
);
848 /* Decrement channel usrs counter */
851 /* Close the priority */
852 v4l2_prio_close(&ch
->prio
, fh
->prio
);
857 filep
->private_data
= NULL
;
863 * vpif_reqbufs() - request buffer handler
866 * @reqbuf: request buffer structure ptr
868 static int vpif_reqbufs(struct file
*file
, void *priv
,
869 struct v4l2_requestbuffers
*reqbuf
)
871 struct vpif_fh
*fh
= priv
;
872 struct channel_obj
*ch
= fh
->channel
;
873 struct common_obj
*common
;
876 vpif_dbg(2, debug
, "vpif_reqbufs\n");
879 * This file handle has not initialized the channel,
880 * It is not allowed to do settings
882 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
)
883 || (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
884 if (!fh
->initialized
) {
885 vpif_dbg(1, debug
, "Channel Busy\n");
890 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= reqbuf
->type
)
893 index
= VPIF_VIDEO_INDEX
;
895 common
= &ch
->common
[index
];
897 if (0 != common
->io_usrs
)
900 /* Initialize videobuf queue as per the buffer type */
901 videobuf_queue_dma_contig_init(&common
->buffer_queue
,
905 common
->fmt
.fmt
.pix
.field
,
906 sizeof(struct videobuf_buffer
), fh
,
909 /* Set io allowed member of file handle to TRUE */
910 fh
->io_allowed
[index
] = 1;
911 /* Increment io usrs member of channel object to 1 */
913 /* Store type of memory requested in channel object */
914 common
->memory
= reqbuf
->memory
;
915 INIT_LIST_HEAD(&common
->dma_queue
);
917 /* Allocate buffers */
918 return videobuf_reqbufs(&common
->buffer_queue
, reqbuf
);
922 * vpif_querybuf() - query buffer handler
925 * @buf: v4l2 buffer structure ptr
927 static int vpif_querybuf(struct file
*file
, void *priv
,
928 struct v4l2_buffer
*buf
)
930 struct vpif_fh
*fh
= priv
;
931 struct channel_obj
*ch
= fh
->channel
;
932 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
934 vpif_dbg(2, debug
, "vpif_querybuf\n");
936 if (common
->fmt
.type
!= buf
->type
)
939 if (common
->memory
!= V4L2_MEMORY_MMAP
) {
940 vpif_dbg(1, debug
, "Invalid memory\n");
944 return videobuf_querybuf(&common
->buffer_queue
, buf
);
948 * vpif_qbuf() - query buffer handler
951 * @buf: v4l2 buffer structure ptr
953 static int vpif_qbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*buf
)
956 struct vpif_fh
*fh
= priv
;
957 struct channel_obj
*ch
= fh
->channel
;
958 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
959 struct v4l2_buffer tbuf
= *buf
;
960 struct videobuf_buffer
*buf1
;
961 unsigned long addr
= 0;
965 vpif_dbg(2, debug
, "vpif_qbuf\n");
967 if (common
->fmt
.type
!= tbuf
.type
) {
968 vpif_err("invalid buffer type\n");
972 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
973 vpif_err("fh io not allowed \n");
977 if (!(list_empty(&common
->dma_queue
)) ||
978 (common
->cur_frm
!= common
->next_frm
) ||
980 (common
->started
&& (0 == ch
->field_id
)))
981 return videobuf_qbuf(&common
->buffer_queue
, buf
);
983 /* bufferqueue is empty store buffer address in VPIF registers */
984 mutex_lock(&common
->buffer_queue
.vb_lock
);
985 buf1
= common
->buffer_queue
.bufs
[tbuf
.index
];
987 if ((buf1
->state
== VIDEOBUF_QUEUED
) ||
988 (buf1
->state
== VIDEOBUF_ACTIVE
)) {
989 vpif_err("invalid state\n");
993 switch (buf1
->memory
) {
994 case V4L2_MEMORY_MMAP
:
995 if (buf1
->baddr
== 0)
999 case V4L2_MEMORY_USERPTR
:
1000 if (tbuf
.length
< buf1
->bsize
)
1003 if ((VIDEOBUF_NEEDS_INIT
!= buf1
->state
)
1004 && (buf1
->baddr
!= tbuf
.m
.userptr
)) {
1005 vpif_buffer_release(&common
->buffer_queue
, buf1
);
1006 buf1
->baddr
= tbuf
.m
.userptr
;
1014 local_irq_save(flags
);
1015 ret
= vpif_buffer_prepare(&common
->buffer_queue
, buf1
,
1016 common
->buffer_queue
.field
);
1018 local_irq_restore(flags
);
1022 buf1
->state
= VIDEOBUF_ACTIVE
;
1024 if (V4L2_MEMORY_USERPTR
== common
->memory
)
1027 addr
= videobuf_to_dma_contig(buf1
);
1029 common
->next_frm
= buf1
;
1030 common
->set_addr(addr
+ common
->ytop_off
,
1031 addr
+ common
->ybtm_off
,
1032 addr
+ common
->ctop_off
,
1033 addr
+ common
->cbtm_off
);
1035 local_irq_restore(flags
);
1036 list_add_tail(&buf1
->stream
, &common
->buffer_queue
.stream
);
1037 mutex_unlock(&common
->buffer_queue
.vb_lock
);
1041 mutex_unlock(&common
->buffer_queue
.vb_lock
);
1046 * vpif_dqbuf() - query buffer handler
1048 * @priv: file handle
1049 * @buf: v4l2 buffer structure ptr
1051 static int vpif_dqbuf(struct file
*file
, void *priv
, struct v4l2_buffer
*buf
)
1053 struct vpif_fh
*fh
= priv
;
1054 struct channel_obj
*ch
= fh
->channel
;
1055 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1057 vpif_dbg(2, debug
, "vpif_dqbuf\n");
1059 return videobuf_dqbuf(&common
->buffer_queue
, buf
,
1060 file
->f_flags
& O_NONBLOCK
);
1064 * vpif_streamon() - streamon handler
1066 * @priv: file handle
1067 * @buftype: v4l2 buffer type
1069 static int vpif_streamon(struct file
*file
, void *priv
,
1070 enum v4l2_buf_type buftype
)
1073 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1074 struct vpif_fh
*fh
= priv
;
1075 struct channel_obj
*ch
= fh
->channel
;
1076 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1077 struct channel_obj
*oth_ch
= vpif_obj
.dev
[!ch
->channel_id
];
1078 struct vpif_params
*vpif
;
1079 unsigned long addr
= 0;
1082 vpif_dbg(2, debug
, "vpif_streamon\n");
1084 vpif
= &ch
->vpifparams
;
1086 if (buftype
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1087 vpif_dbg(1, debug
, "buffer type not supported\n");
1091 /* If file handle is not allowed IO, return error */
1092 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
1093 vpif_dbg(1, debug
, "io not allowed\n");
1097 /* If Streaming is already started, return error */
1098 if (common
->started
) {
1099 vpif_dbg(1, debug
, "channel->started\n");
1103 if ((ch
->channel_id
== VPIF_CHANNEL0_VIDEO
&&
1104 oth_ch
->common
[VPIF_VIDEO_INDEX
].started
&&
1105 vpif
->std_info
.ycmux_mode
== 0) ||
1106 ((ch
->channel_id
== VPIF_CHANNEL1_VIDEO
) &&
1107 (2 == oth_ch
->common
[VPIF_VIDEO_INDEX
].started
))) {
1108 vpif_dbg(1, debug
, "other channel is being used\n");
1112 ret
= vpif_check_format(ch
, &common
->fmt
.fmt
.pix
, 0);
1116 /* Enable streamon on the sub device */
1117 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], video
,
1120 if (ret
&& (ret
!= -ENOIOCTLCMD
)) {
1121 vpif_dbg(1, debug
, "stream on failed in subdev\n");
1125 /* Call videobuf_streamon to start streaming in videobuf */
1126 ret
= videobuf_streamon(&common
->buffer_queue
);
1128 vpif_dbg(1, debug
, "videobuf_streamon\n");
1132 /* If buffer queue is empty, return error */
1133 if (list_empty(&common
->dma_queue
)) {
1134 vpif_dbg(1, debug
, "buffer queue is empty\n");
1139 /* Get the next frame from the buffer queue */
1140 common
->cur_frm
= list_entry(common
->dma_queue
.next
,
1141 struct videobuf_buffer
, queue
);
1142 common
->next_frm
= common
->cur_frm
;
1144 /* Remove buffer from the buffer queue */
1145 list_del(&common
->cur_frm
->queue
);
1146 /* Mark state of the current frame to active */
1147 common
->cur_frm
->state
= VIDEOBUF_ACTIVE
;
1148 /* Initialize field_id and started member */
1150 common
->started
= 1;
1152 if (V4L2_MEMORY_USERPTR
== common
->memory
)
1153 addr
= common
->cur_frm
->boff
;
1155 addr
= videobuf_to_dma_contig(common
->cur_frm
);
1157 /* Calculate the offset for Y and C data in the buffer */
1158 vpif_calculate_offsets(ch
);
1160 if ((vpif
->std_info
.frm_fmt
&&
1161 ((common
->fmt
.fmt
.pix
.field
!= V4L2_FIELD_NONE
) &&
1162 (common
->fmt
.fmt
.pix
.field
!= V4L2_FIELD_ANY
))) ||
1163 (!vpif
->std_info
.frm_fmt
&&
1164 (common
->fmt
.fmt
.pix
.field
== V4L2_FIELD_NONE
))) {
1165 vpif_dbg(1, debug
, "conflict in field format and std format\n");
1170 /* configure 1 or 2 channel mode */
1171 ret
= config
->setup_input_channel_mode(vpif
->std_info
.ycmux_mode
);
1174 vpif_dbg(1, debug
, "can't set vpif channel mode\n");
1178 /* Call vpif_set_params function to set the parameters and addresses */
1179 ret
= vpif_set_video_params(vpif
, ch
->channel_id
);
1182 vpif_dbg(1, debug
, "can't set video params\n");
1186 common
->started
= ret
;
1187 vpif_config_addr(ch
, ret
);
1189 common
->set_addr(addr
+ common
->ytop_off
,
1190 addr
+ common
->ybtm_off
,
1191 addr
+ common
->ctop_off
,
1192 addr
+ common
->cbtm_off
);
1195 * Set interrupt for both the fields in VPIF Register enable channel in
1198 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
)) {
1199 channel0_intr_assert();
1200 channel0_intr_enable(1);
1203 if ((VPIF_CHANNEL1_VIDEO
== ch
->channel_id
) ||
1204 (common
->started
== 2)) {
1205 channel1_intr_assert();
1206 channel1_intr_enable(1);
1209 channel_first_int
[VPIF_VIDEO_INDEX
][ch
->channel_id
] = 1;
1213 videobuf_streamoff(&common
->buffer_queue
);
1218 * vpif_streamoff() - streamoff handler
1220 * @priv: file handle
1221 * @buftype: v4l2 buffer type
1223 static int vpif_streamoff(struct file
*file
, void *priv
,
1224 enum v4l2_buf_type buftype
)
1227 struct vpif_fh
*fh
= priv
;
1228 struct channel_obj
*ch
= fh
->channel
;
1229 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1232 vpif_dbg(2, debug
, "vpif_streamoff\n");
1234 if (buftype
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
) {
1235 vpif_dbg(1, debug
, "buffer type not supported\n");
1239 /* If io is allowed for this file handle, return error */
1240 if (!fh
->io_allowed
[VPIF_VIDEO_INDEX
]) {
1241 vpif_dbg(1, debug
, "io not allowed\n");
1245 /* If streaming is not started, return error */
1246 if (!common
->started
) {
1247 vpif_dbg(1, debug
, "channel->started\n");
1251 /* disable channel */
1252 if (VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) {
1254 channel0_intr_enable(0);
1257 channel1_intr_enable(0);
1260 common
->started
= 0;
1262 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], video
,
1265 if (ret
&& (ret
!= -ENOIOCTLCMD
))
1266 vpif_dbg(1, debug
, "stream off failed in subdev\n");
1268 return videobuf_streamoff(&common
->buffer_queue
);
1272 * vpif_map_sub_device_to_input() - Maps sub device to input
1273 * @ch - ptr to channel
1274 * @config - ptr to capture configuration
1275 * @input_index - Given input index from application
1276 * @sub_device_index - index into sd table
1278 * lookup the sub device information for a given input index.
1279 * we report all the inputs to application. inputs table also
1280 * has sub device name for the each input
1282 static struct vpif_subdev_info
*vpif_map_sub_device_to_input(
1283 struct channel_obj
*ch
,
1284 struct vpif_capture_config
*vpif_cfg
,
1286 int *sub_device_index
)
1288 struct vpif_capture_chan_config
*chan_cfg
;
1289 struct vpif_subdev_info
*subdev_info
= NULL
;
1290 const char *subdev_name
= NULL
;
1293 vpif_dbg(2, debug
, "vpif_map_sub_device_to_input\n");
1295 chan_cfg
= &vpif_cfg
->chan_config
[ch
->channel_id
];
1298 * search through the inputs to find the sub device supporting
1301 for (i
= 0; i
< chan_cfg
->input_count
; i
++) {
1302 /* For each sub device, loop through input */
1303 if (i
== input_index
) {
1304 subdev_name
= chan_cfg
->inputs
[i
].subdev_name
;
1309 /* if reached maximum. return null */
1310 if (i
== chan_cfg
->input_count
|| (NULL
== subdev_name
))
1313 /* loop through the sub device list to get the sub device info */
1314 for (i
= 0; i
< vpif_cfg
->subdev_count
; i
++) {
1315 subdev_info
= &vpif_cfg
->subdev_info
[i
];
1316 if (!strcmp(subdev_info
->name
, subdev_name
))
1320 if (i
== vpif_cfg
->subdev_count
)
1323 /* check if the sub device is registered */
1324 if (NULL
== vpif_obj
.sd
[i
])
1327 *sub_device_index
= i
;
1332 * vpif_querystd() - querystd handler
1334 * @priv: file handle
1335 * @std_id: ptr to std id
1337 * This function is called to detect standard at the selected input
1339 static int vpif_querystd(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1341 struct vpif_fh
*fh
= priv
;
1342 struct channel_obj
*ch
= fh
->channel
;
1345 vpif_dbg(2, debug
, "vpif_querystd\n");
1347 /* Call querystd function of decoder device */
1348 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], video
,
1351 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
1357 * vpif_g_std() - get STD handler
1359 * @priv: file handle
1360 * @std_id: ptr to std id
1362 static int vpif_g_std(struct file
*file
, void *priv
, v4l2_std_id
*std
)
1364 struct vpif_fh
*fh
= priv
;
1365 struct channel_obj
*ch
= fh
->channel
;
1367 vpif_dbg(2, debug
, "vpif_g_std\n");
1369 *std
= ch
->video
.stdid
;
1374 * vpif_s_std() - set STD handler
1376 * @priv: file handle
1377 * @std_id: ptr to std id
1379 static int vpif_s_std(struct file
*file
, void *priv
, v4l2_std_id
*std_id
)
1381 struct vpif_fh
*fh
= priv
;
1382 struct channel_obj
*ch
= fh
->channel
;
1383 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1386 vpif_dbg(2, debug
, "vpif_s_std\n");
1388 if (common
->started
) {
1389 vpif_err("streaming in progress\n");
1393 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1394 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1395 if (!fh
->initialized
) {
1396 vpif_dbg(1, debug
, "Channel Busy\n");
1401 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1405 fh
->initialized
= 1;
1407 /* Call encoder subdevice function to set the standard */
1408 ch
->video
.stdid
= *std_id
;
1409 ch
->video
.dv_preset
= V4L2_DV_INVALID
;
1410 memset(&ch
->video
.bt_timings
, 0, sizeof(ch
->video
.bt_timings
));
1412 /* Get the information about the standard */
1413 if (vpif_update_std_info(ch
)) {
1414 vpif_err("Error getting the standard info\n");
1418 /* Configure the default format information */
1419 vpif_config_format(ch
);
1421 /* set standard in the sub device */
1422 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], core
,
1425 vpif_dbg(1, debug
, "Failed to set standard for sub devices\n");
1430 * vpif_enum_input() - ENUMINPUT handler
1432 * @priv: file handle
1433 * @input: ptr to input structure
1435 static int vpif_enum_input(struct file
*file
, void *priv
,
1436 struct v4l2_input
*input
)
1439 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1440 struct vpif_capture_chan_config
*chan_cfg
;
1441 struct vpif_fh
*fh
= priv
;
1442 struct channel_obj
*ch
= fh
->channel
;
1444 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1446 if (input
->index
>= chan_cfg
->input_count
) {
1447 vpif_dbg(1, debug
, "Invalid input index\n");
1451 memcpy(input
, &chan_cfg
->inputs
[input
->index
].input
,
1457 * vpif_g_input() - Get INPUT handler
1459 * @priv: file handle
1460 * @index: ptr to input index
1462 static int vpif_g_input(struct file
*file
, void *priv
, unsigned int *index
)
1464 struct vpif_fh
*fh
= priv
;
1465 struct channel_obj
*ch
= fh
->channel
;
1466 struct video_obj
*vid_ch
= &ch
->video
;
1468 *index
= vid_ch
->input_idx
;
1474 * vpif_s_input() - Set INPUT handler
1476 * @priv: file handle
1477 * @index: input index
1479 static int vpif_s_input(struct file
*file
, void *priv
, unsigned int index
)
1481 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1482 struct vpif_capture_chan_config
*chan_cfg
;
1483 struct vpif_fh
*fh
= priv
;
1484 struct channel_obj
*ch
= fh
->channel
;
1485 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1486 struct video_obj
*vid_ch
= &ch
->video
;
1487 struct vpif_subdev_info
*subdev_info
;
1488 int ret
= 0, sd_index
= 0;
1489 u32 input
= 0, output
= 0;
1491 chan_cfg
= &config
->chan_config
[ch
->channel_id
];
1493 if (common
->started
) {
1494 vpif_err("Streaming in progress\n");
1498 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1499 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1500 if (!fh
->initialized
) {
1501 vpif_dbg(1, debug
, "Channel Busy\n");
1506 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1510 fh
->initialized
= 1;
1511 subdev_info
= vpif_map_sub_device_to_input(ch
, config
, index
,
1513 if (NULL
== subdev_info
) {
1515 "couldn't lookup sub device for the input index\n");
1519 /* first setup input path from sub device to vpif */
1520 if (config
->setup_input_path
) {
1521 ret
= config
->setup_input_path(ch
->channel_id
,
1524 vpif_dbg(1, debug
, "couldn't setup input path for the"
1525 " sub device %s, for input index %d\n",
1526 subdev_info
->name
, index
);
1531 if (subdev_info
->can_route
) {
1532 input
= subdev_info
->input
;
1533 output
= subdev_info
->output
;
1534 ret
= v4l2_subdev_call(vpif_obj
.sd
[sd_index
], video
, s_routing
,
1537 vpif_dbg(1, debug
, "Failed to set input\n");
1541 vid_ch
->input_idx
= index
;
1542 ch
->curr_subdev_info
= subdev_info
;
1543 ch
->curr_sd_index
= sd_index
;
1544 /* copy interface parameters to vpif */
1545 ch
->vpifparams
.iface
= subdev_info
->vpif_if
;
1547 /* update tvnorms from the sub device input info */
1548 ch
->video_dev
->tvnorms
= chan_cfg
->inputs
[index
].input
.std
;
1553 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1555 * @priv: file handle
1556 * @index: input index
1558 static int vpif_enum_fmt_vid_cap(struct file
*file
, void *priv
,
1559 struct v4l2_fmtdesc
*fmt
)
1561 struct vpif_fh
*fh
= priv
;
1562 struct channel_obj
*ch
= fh
->channel
;
1564 if (fmt
->index
!= 0) {
1565 vpif_dbg(1, debug
, "Invalid format index\n");
1569 /* Fill in the information about format */
1570 if (ch
->vpifparams
.iface
.if_type
== VPIF_IF_RAW_BAYER
) {
1571 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1572 strcpy(fmt
->description
, "Raw Mode -Bayer Pattern GrRBGb");
1573 fmt
->pixelformat
= V4L2_PIX_FMT_SBGGR8
;
1575 fmt
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1576 strcpy(fmt
->description
, "YCbCr4:2:2 YC Planar");
1577 fmt
->pixelformat
= V4L2_PIX_FMT_YUV422P
;
1583 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1585 * @priv: file handle
1586 * @fmt: ptr to v4l2 format structure
1588 static int vpif_try_fmt_vid_cap(struct file
*file
, void *priv
,
1589 struct v4l2_format
*fmt
)
1591 struct vpif_fh
*fh
= priv
;
1592 struct channel_obj
*ch
= fh
->channel
;
1593 struct v4l2_pix_format
*pixfmt
= &fmt
->fmt
.pix
;
1595 return vpif_check_format(ch
, pixfmt
, 1);
1600 * vpif_g_fmt_vid_cap() - Set INPUT handler
1602 * @priv: file handle
1603 * @fmt: ptr to v4l2 format structure
1605 static int vpif_g_fmt_vid_cap(struct file
*file
, void *priv
,
1606 struct v4l2_format
*fmt
)
1608 struct vpif_fh
*fh
= priv
;
1609 struct channel_obj
*ch
= fh
->channel
;
1610 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1612 /* Check the validity of the buffer type */
1613 if (common
->fmt
.type
!= fmt
->type
)
1616 /* Fill in the information about format */
1622 * vpif_s_fmt_vid_cap() - Set FMT handler
1624 * @priv: file handle
1625 * @fmt: ptr to v4l2 format structure
1627 static int vpif_s_fmt_vid_cap(struct file
*file
, void *priv
,
1628 struct v4l2_format
*fmt
)
1630 struct vpif_fh
*fh
= priv
;
1631 struct channel_obj
*ch
= fh
->channel
;
1632 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1633 struct v4l2_pix_format
*pixfmt
;
1636 vpif_dbg(2, debug
, "%s\n", __func__
);
1638 /* If streaming is started, return error */
1639 if (common
->started
) {
1640 vpif_dbg(1, debug
, "Streaming is started\n");
1644 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1645 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1646 if (!fh
->initialized
) {
1647 vpif_dbg(1, debug
, "Channel Busy\n");
1652 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1656 fh
->initialized
= 1;
1658 pixfmt
= &fmt
->fmt
.pix
;
1659 /* Check for valid field format */
1660 ret
= vpif_check_format(ch
, pixfmt
, 0);
1664 /* store the format in the channel object */
1670 * vpif_querycap() - QUERYCAP handler
1672 * @priv: file handle
1673 * @cap: ptr to v4l2_capability structure
1675 static int vpif_querycap(struct file
*file
, void *priv
,
1676 struct v4l2_capability
*cap
)
1678 struct vpif_capture_config
*config
= vpif_dev
->platform_data
;
1680 cap
->version
= VPIF_CAPTURE_VERSION_CODE
;
1681 cap
->capabilities
= V4L2_CAP_VIDEO_CAPTURE
| V4L2_CAP_STREAMING
;
1682 strlcpy(cap
->driver
, "vpif capture", sizeof(cap
->driver
));
1683 strlcpy(cap
->bus_info
, "DM646x Platform", sizeof(cap
->bus_info
));
1684 strlcpy(cap
->card
, config
->card_name
, sizeof(cap
->card
));
1690 * vpif_g_priority() - get priority handler
1692 * @priv: file handle
1693 * @prio: ptr to v4l2_priority structure
1695 static int vpif_g_priority(struct file
*file
, void *priv
,
1696 enum v4l2_priority
*prio
)
1698 struct vpif_fh
*fh
= priv
;
1699 struct channel_obj
*ch
= fh
->channel
;
1701 *prio
= v4l2_prio_max(&ch
->prio
);
1707 * vpif_s_priority() - set priority handler
1709 * @priv: file handle
1710 * @prio: ptr to v4l2_priority structure
1712 static int vpif_s_priority(struct file
*file
, void *priv
, enum v4l2_priority p
)
1714 struct vpif_fh
*fh
= priv
;
1715 struct channel_obj
*ch
= fh
->channel
;
1717 return v4l2_prio_change(&ch
->prio
, &fh
->prio
, p
);
1721 * vpif_cropcap() - cropcap handler
1723 * @priv: file handle
1724 * @crop: ptr to v4l2_cropcap structure
1726 static int vpif_cropcap(struct file
*file
, void *priv
,
1727 struct v4l2_cropcap
*crop
)
1729 struct vpif_fh
*fh
= priv
;
1730 struct channel_obj
*ch
= fh
->channel
;
1731 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1733 if (V4L2_BUF_TYPE_VIDEO_CAPTURE
!= crop
->type
)
1736 crop
->bounds
.left
= 0;
1737 crop
->bounds
.top
= 0;
1738 crop
->bounds
.height
= common
->height
;
1739 crop
->bounds
.width
= common
->width
;
1740 crop
->defrect
= crop
->bounds
;
1745 * vpif_enum_dv_presets() - ENUM_DV_PRESETS handler
1747 * @priv: file handle
1748 * @preset: input preset
1750 static int vpif_enum_dv_presets(struct file
*file
, void *priv
,
1751 struct v4l2_dv_enum_preset
*preset
)
1753 struct vpif_fh
*fh
= priv
;
1754 struct channel_obj
*ch
= fh
->channel
;
1756 return v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
],
1757 video
, enum_dv_presets
, preset
);
1761 * vpif_query_dv_presets() - QUERY_DV_PRESET handler
1763 * @priv: file handle
1764 * @preset: input preset
1766 static int vpif_query_dv_preset(struct file
*file
, void *priv
,
1767 struct v4l2_dv_preset
*preset
)
1769 struct vpif_fh
*fh
= priv
;
1770 struct channel_obj
*ch
= fh
->channel
;
1772 return v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
],
1773 video
, query_dv_preset
, preset
);
1776 * vpif_s_dv_presets() - S_DV_PRESETS handler
1778 * @priv: file handle
1779 * @preset: input preset
1781 static int vpif_s_dv_preset(struct file
*file
, void *priv
,
1782 struct v4l2_dv_preset
*preset
)
1784 struct vpif_fh
*fh
= priv
;
1785 struct channel_obj
*ch
= fh
->channel
;
1786 struct common_obj
*common
= &ch
->common
[VPIF_VIDEO_INDEX
];
1789 if (common
->started
) {
1790 vpif_dbg(1, debug
, "streaming in progress\n");
1794 if ((VPIF_CHANNEL0_VIDEO
== ch
->channel_id
) ||
1795 (VPIF_CHANNEL1_VIDEO
== ch
->channel_id
)) {
1796 if (!fh
->initialized
) {
1797 vpif_dbg(1, debug
, "Channel Busy\n");
1802 ret
= v4l2_prio_check(&ch
->prio
, fh
->prio
);
1806 fh
->initialized
= 1;
1808 /* Call encoder subdevice function to set the standard */
1809 if (mutex_lock_interruptible(&common
->lock
))
1810 return -ERESTARTSYS
;
1812 ch
->video
.dv_preset
= preset
->preset
;
1813 ch
->video
.stdid
= V4L2_STD_UNKNOWN
;
1814 memset(&ch
->video
.bt_timings
, 0, sizeof(ch
->video
.bt_timings
));
1816 /* Get the information about the standard */
1817 if (vpif_update_std_info(ch
)) {
1818 vpif_dbg(1, debug
, "Error getting the standard info\n");
1821 /* Configure the default format information */
1822 vpif_config_format(ch
);
1824 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
],
1825 video
, s_dv_preset
, preset
);
1828 mutex_unlock(&common
->lock
);
1833 * vpif_g_dv_presets() - G_DV_PRESETS handler
1835 * @priv: file handle
1836 * @preset: input preset
1838 static int vpif_g_dv_preset(struct file
*file
, void *priv
,
1839 struct v4l2_dv_preset
*preset
)
1841 struct vpif_fh
*fh
= priv
;
1842 struct channel_obj
*ch
= fh
->channel
;
1844 preset
->preset
= ch
->video
.dv_preset
;
1850 * vpif_s_dv_timings() - S_DV_TIMINGS handler
1852 * @priv: file handle
1853 * @timings: digital video timings
1855 static int vpif_s_dv_timings(struct file
*file
, void *priv
,
1856 struct v4l2_dv_timings
*timings
)
1858 struct vpif_fh
*fh
= priv
;
1859 struct channel_obj
*ch
= fh
->channel
;
1860 struct vpif_params
*vpifparams
= &ch
->vpifparams
;
1861 struct vpif_channel_config_params
*std_info
= &vpifparams
->std_info
;
1862 struct video_obj
*vid_ch
= &ch
->video
;
1863 struct v4l2_bt_timings
*bt
= &vid_ch
->bt_timings
;
1866 if (timings
->type
!= V4L2_DV_BT_656_1120
) {
1867 vpif_dbg(2, debug
, "Timing type not defined\n");
1871 /* Configure subdevice timings, if any */
1872 ret
= v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
],
1873 video
, s_dv_timings
, timings
);
1874 if (ret
== -ENOIOCTLCMD
) {
1875 vpif_dbg(2, debug
, "Custom DV timings not supported by "
1880 vpif_dbg(2, debug
, "Error setting custom DV timings\n");
1884 if (!(timings
->bt
.width
&& timings
->bt
.height
&&
1885 (timings
->bt
.hbackporch
||
1886 timings
->bt
.hfrontporch
||
1887 timings
->bt
.hsync
) &&
1888 timings
->bt
.vfrontporch
&&
1889 (timings
->bt
.vbackporch
||
1890 timings
->bt
.vsync
))) {
1891 vpif_dbg(2, debug
, "Timings for width, height, "
1892 "horizontal back porch, horizontal sync, "
1893 "horizontal front porch, vertical back porch, "
1894 "vertical sync and vertical back porch "
1895 "must be defined\n");
1901 /* Configure video port timings */
1903 std_info
->eav2sav
= bt
->hbackporch
+ bt
->hfrontporch
+
1905 std_info
->sav2eav
= bt
->width
;
1908 std_info
->l3
= bt
->vsync
+ bt
->vbackporch
+ 1;
1910 if (bt
->interlaced
) {
1911 if (bt
->il_vbackporch
|| bt
->il_vfrontporch
|| bt
->il_vsync
) {
1912 std_info
->vsize
= bt
->height
* 2 +
1913 bt
->vfrontporch
+ bt
->vsync
+ bt
->vbackporch
+
1914 bt
->il_vfrontporch
+ bt
->il_vsync
+
1916 std_info
->l5
= std_info
->vsize
/2 -
1917 (bt
->vfrontporch
- 1);
1918 std_info
->l7
= std_info
->vsize
/2 + 1;
1919 std_info
->l9
= std_info
->l7
+ bt
->il_vsync
+
1920 bt
->il_vbackporch
+ 1;
1921 std_info
->l11
= std_info
->vsize
-
1922 (bt
->il_vfrontporch
- 1);
1924 vpif_dbg(2, debug
, "Required timing values for "
1925 "interlaced BT format missing\n");
1929 std_info
->vsize
= bt
->height
+ bt
->vfrontporch
+
1930 bt
->vsync
+ bt
->vbackporch
;
1931 std_info
->l5
= std_info
->vsize
- (bt
->vfrontporch
- 1);
1933 strncpy(std_info
->name
, "Custom timings BT656/1120", VPIF_MAX_NAME
);
1934 std_info
->width
= bt
->width
;
1935 std_info
->height
= bt
->height
;
1936 std_info
->frm_fmt
= bt
->interlaced
? 0 : 1;
1937 std_info
->ycmux_mode
= 0;
1938 std_info
->capture_format
= 0;
1939 std_info
->vbi_supported
= 0;
1940 std_info
->hd_sd
= 1;
1941 std_info
->stdid
= 0;
1942 std_info
->dv_preset
= V4L2_DV_INVALID
;
1945 vid_ch
->dv_preset
= V4L2_DV_INVALID
;
1950 * vpif_g_dv_timings() - G_DV_TIMINGS handler
1952 * @priv: file handle
1953 * @timings: digital video timings
1955 static int vpif_g_dv_timings(struct file
*file
, void *priv
,
1956 struct v4l2_dv_timings
*timings
)
1958 struct vpif_fh
*fh
= priv
;
1959 struct channel_obj
*ch
= fh
->channel
;
1960 struct video_obj
*vid_ch
= &ch
->video
;
1961 struct v4l2_bt_timings
*bt
= &vid_ch
->bt_timings
;
1969 * vpif_g_chip_ident() - Identify the chip
1971 * @priv: file handle
1972 * @chip: chip identity
1974 * Returns zero or -EINVAL if read operations fails.
1976 static int vpif_g_chip_ident(struct file
*file
, void *priv
,
1977 struct v4l2_dbg_chip_ident
*chip
)
1979 chip
->ident
= V4L2_IDENT_NONE
;
1981 if (chip
->match
.type
!= V4L2_CHIP_MATCH_I2C_DRIVER
&&
1982 chip
->match
.type
!= V4L2_CHIP_MATCH_I2C_ADDR
) {
1983 vpif_dbg(2, debug
, "match_type is invalid.\n");
1987 return v4l2_device_call_until_err(&vpif_obj
.v4l2_dev
, 0, core
,
1988 g_chip_ident
, chip
);
1991 #ifdef CONFIG_VIDEO_ADV_DEBUG
1993 * vpif_dbg_g_register() - Read register
1995 * @priv: file handle
1996 * @reg: register to be read
1999 * Returns zero or -EINVAL if read operations fails.
2001 static int vpif_dbg_g_register(struct file
*file
, void *priv
,
2002 struct v4l2_dbg_register
*reg
){
2003 struct vpif_fh
*fh
= priv
;
2004 struct channel_obj
*ch
= fh
->channel
;
2006 return v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], core
,
2011 * vpif_dbg_s_register() - Write to register
2013 * @priv: file handle
2014 * @reg: register to be modified
2017 * Returns zero or -EINVAL if write operations fails.
2019 static int vpif_dbg_s_register(struct file
*file
, void *priv
,
2020 struct v4l2_dbg_register
*reg
){
2021 struct vpif_fh
*fh
= priv
;
2022 struct channel_obj
*ch
= fh
->channel
;
2024 return v4l2_subdev_call(vpif_obj
.sd
[ch
->curr_sd_index
], core
,
2030 * vpif_log_status() - Status information
2032 * @priv: file handle
2036 static int vpif_log_status(struct file
*filep
, void *priv
)
2038 /* status for sub devices */
2039 v4l2_device_call_all(&vpif_obj
.v4l2_dev
, 0, core
, log_status
);
2044 /* vpif capture ioctl operations */
2045 static const struct v4l2_ioctl_ops vpif_ioctl_ops
= {
2046 .vidioc_querycap
= vpif_querycap
,
2047 .vidioc_g_priority
= vpif_g_priority
,
2048 .vidioc_s_priority
= vpif_s_priority
,
2049 .vidioc_enum_fmt_vid_cap
= vpif_enum_fmt_vid_cap
,
2050 .vidioc_g_fmt_vid_cap
= vpif_g_fmt_vid_cap
,
2051 .vidioc_s_fmt_vid_cap
= vpif_s_fmt_vid_cap
,
2052 .vidioc_try_fmt_vid_cap
= vpif_try_fmt_vid_cap
,
2053 .vidioc_enum_input
= vpif_enum_input
,
2054 .vidioc_s_input
= vpif_s_input
,
2055 .vidioc_g_input
= vpif_g_input
,
2056 .vidioc_reqbufs
= vpif_reqbufs
,
2057 .vidioc_querybuf
= vpif_querybuf
,
2058 .vidioc_querystd
= vpif_querystd
,
2059 .vidioc_s_std
= vpif_s_std
,
2060 .vidioc_g_std
= vpif_g_std
,
2061 .vidioc_qbuf
= vpif_qbuf
,
2062 .vidioc_dqbuf
= vpif_dqbuf
,
2063 .vidioc_streamon
= vpif_streamon
,
2064 .vidioc_streamoff
= vpif_streamoff
,
2065 .vidioc_cropcap
= vpif_cropcap
,
2066 .vidioc_enum_dv_presets
= vpif_enum_dv_presets
,
2067 .vidioc_s_dv_preset
= vpif_s_dv_preset
,
2068 .vidioc_g_dv_preset
= vpif_g_dv_preset
,
2069 .vidioc_query_dv_preset
= vpif_query_dv_preset
,
2070 .vidioc_s_dv_timings
= vpif_s_dv_timings
,
2071 .vidioc_g_dv_timings
= vpif_g_dv_timings
,
2072 .vidioc_g_chip_ident
= vpif_g_chip_ident
,
2073 #ifdef CONFIG_VIDEO_ADV_DEBUG
2074 .vidioc_g_register
= vpif_dbg_g_register
,
2075 .vidioc_s_register
= vpif_dbg_s_register
,
2077 .vidioc_log_status
= vpif_log_status
,
2080 /* vpif file operations */
2081 static struct v4l2_file_operations vpif_fops
= {
2082 .owner
= THIS_MODULE
,
2084 .release
= vpif_release
,
2085 .unlocked_ioctl
= video_ioctl2
,
2090 /* vpif video template */
2091 static struct video_device vpif_video_template
= {
2095 .ioctl_ops
= &vpif_ioctl_ops
,
2099 * initialize_vpif() - Initialize vpif data structures
2101 * Allocate memory for data structures and initialize them
2103 static int initialize_vpif(void)
2106 int free_channel_objects_index
;
2108 /* Default number of buffers should be 3 */
2109 if ((ch0_numbuffers
> 0) &&
2110 (ch0_numbuffers
< config_params
.min_numbuffers
))
2111 ch0_numbuffers
= config_params
.min_numbuffers
;
2112 if ((ch1_numbuffers
> 0) &&
2113 (ch1_numbuffers
< config_params
.min_numbuffers
))
2114 ch1_numbuffers
= config_params
.min_numbuffers
;
2116 /* Set buffer size to min buffers size if it is invalid */
2117 if (ch0_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
])
2119 config_params
.min_bufsize
[VPIF_CHANNEL0_VIDEO
];
2120 if (ch1_bufsize
< config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
])
2122 config_params
.min_bufsize
[VPIF_CHANNEL1_VIDEO
];
2124 config_params
.numbuffers
[VPIF_CHANNEL0_VIDEO
] = ch0_numbuffers
;
2125 config_params
.numbuffers
[VPIF_CHANNEL1_VIDEO
] = ch1_numbuffers
;
2126 if (ch0_numbuffers
) {
2127 config_params
.channel_bufsize
[VPIF_CHANNEL0_VIDEO
]
2130 if (ch1_numbuffers
) {
2131 config_params
.channel_bufsize
[VPIF_CHANNEL1_VIDEO
]
2135 /* Allocate memory for six channel objects */
2136 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2138 kzalloc(sizeof(*vpif_obj
.dev
[i
]), GFP_KERNEL
);
2139 /* If memory allocation fails, return error */
2140 if (!vpif_obj
.dev
[i
]) {
2141 free_channel_objects_index
= i
;
2143 goto vpif_init_free_channel_objects
;
2148 vpif_init_free_channel_objects
:
2149 for (j
= 0; j
< free_channel_objects_index
; j
++)
2150 kfree(vpif_obj
.dev
[j
]);
2155 * vpif_probe : This function probes the vpif capture driver
2156 * @pdev: platform device pointer
2158 * This creates device entries by register itself to the V4L2 driver and
2159 * initializes fields of each channel objects
2161 static __init
int vpif_probe(struct platform_device
*pdev
)
2163 struct vpif_subdev_info
*subdevdata
;
2164 struct vpif_capture_config
*config
;
2165 int i
, j
, k
, m
, q
, err
;
2166 struct i2c_adapter
*i2c_adap
;
2167 struct channel_obj
*ch
;
2168 struct common_obj
*common
;
2169 struct video_device
*vfd
;
2170 struct resource
*res
;
2173 vpif_dev
= &pdev
->dev
;
2175 err
= initialize_vpif();
2177 v4l2_err(vpif_dev
->driver
, "Error initializing vpif\n");
2182 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, k
))) {
2183 for (i
= res
->start
; i
<= res
->end
; i
++) {
2184 if (request_irq(i
, vpif_channel_isr
, IRQF_DISABLED
,
2186 (void *)(&vpif_obj
.dev
[k
]->channel_id
))) {
2195 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2196 /* Get the pointer to the channel object */
2197 ch
= vpif_obj
.dev
[i
];
2198 /* Allocate memory for video device */
2199 vfd
= video_device_alloc();
2201 for (j
= 0; j
< i
; j
++) {
2202 ch
= vpif_obj
.dev
[j
];
2203 video_device_release(ch
->video_dev
);
2206 goto vpif_dev_alloc_err
;
2209 /* Initialize field of video device */
2210 *vfd
= vpif_video_template
;
2211 vfd
->v4l2_dev
= &vpif_obj
.v4l2_dev
;
2212 vfd
->release
= video_device_release
;
2213 snprintf(vfd
->name
, sizeof(vfd
->name
),
2214 "DM646x_VPIFCapture_DRIVER_V%d.%d.%d",
2215 (VPIF_CAPTURE_VERSION_CODE
>> 16) & 0xff,
2216 (VPIF_CAPTURE_VERSION_CODE
>> 8) & 0xff,
2217 (VPIF_CAPTURE_VERSION_CODE
) & 0xff);
2218 /* Set video_dev to the video device */
2219 ch
->video_dev
= vfd
;
2222 for (j
= 0; j
< VPIF_CAPTURE_MAX_DEVICES
; j
++) {
2223 ch
= vpif_obj
.dev
[j
];
2225 common
= &(ch
->common
[VPIF_VIDEO_INDEX
]);
2226 spin_lock_init(&common
->irqlock
);
2227 mutex_init(&common
->lock
);
2228 ch
->video_dev
->lock
= &common
->lock
;
2229 /* Initialize prio member of channel object */
2230 v4l2_prio_init(&ch
->prio
);
2231 err
= video_register_device(ch
->video_dev
,
2232 VFL_TYPE_GRABBER
, (j
? 1 : 0));
2236 video_set_drvdata(ch
->video_dev
, ch
);
2240 i2c_adap
= i2c_get_adapter(1);
2241 config
= pdev
->dev
.platform_data
;
2243 subdev_count
= config
->subdev_count
;
2244 vpif_obj
.sd
= kzalloc(sizeof(struct v4l2_subdev
*) * subdev_count
,
2246 if (vpif_obj
.sd
== NULL
) {
2247 vpif_err("unable to allocate memory for subdevice pointers\n");
2252 err
= v4l2_device_register(vpif_dev
, &vpif_obj
.v4l2_dev
);
2254 v4l2_err(vpif_dev
->driver
, "Error registering v4l2 device\n");
2255 goto probe_subdev_out
;
2258 for (i
= 0; i
< subdev_count
; i
++) {
2259 subdevdata
= &config
->subdev_info
[i
];
2261 v4l2_i2c_new_subdev_board(&vpif_obj
.v4l2_dev
,
2263 &subdevdata
->board_info
,
2266 if (!vpif_obj
.sd
[i
]) {
2267 vpif_err("Error registering v4l2 subdevice\n");
2268 goto probe_subdev_out
;
2270 v4l2_info(&vpif_obj
.v4l2_dev
, "registered sub device %s\n",
2274 vpif_obj
.sd
[i
]->grp_id
= 1 << i
;
2277 v4l2_info(&vpif_obj
.v4l2_dev
,
2278 "DM646x VPIF capture driver initialized\n");
2282 /* free sub devices memory */
2285 j
= VPIF_CAPTURE_MAX_DEVICES
;
2287 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
2288 for (k
= 0; k
< j
; k
++) {
2289 /* Get the pointer to the channel object */
2290 ch
= vpif_obj
.dev
[k
];
2291 /* Unregister video device */
2292 video_unregister_device(ch
->video_dev
);
2296 k
= VPIF_CAPTURE_MAX_DEVICES
-1;
2297 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, k
);
2301 for (q
= k
; q
>= 0; q
--) {
2302 for (m
= i
; m
>= (int)res
->start
; m
--)
2303 free_irq(m
, (void *)(&vpif_obj
.dev
[q
]->channel_id
));
2305 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, q
-1);
2313 * vpif_remove() - driver remove handler
2314 * @device: ptr to platform device structure
2316 * The vidoe device is unregistered
2318 static int vpif_remove(struct platform_device
*device
)
2321 struct channel_obj
*ch
;
2323 v4l2_device_unregister(&vpif_obj
.v4l2_dev
);
2325 /* un-register device */
2326 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++) {
2327 /* Get the pointer to the channel object */
2328 ch
= vpif_obj
.dev
[i
];
2329 /* Unregister video device */
2330 video_unregister_device(ch
->video_dev
);
2336 * vpif_suspend: vpif device suspend
2338 * TODO: Add suspend code here
2341 vpif_suspend(struct device
*dev
)
2347 * vpif_resume: vpif device suspend
2349 * TODO: Add resume code here
2352 vpif_resume(struct device
*dev
)
2357 static const struct dev_pm_ops vpif_dev_pm_ops
= {
2358 .suspend
= vpif_suspend
,
2359 .resume
= vpif_resume
,
2362 static __refdata
struct platform_driver vpif_driver
= {
2364 .name
= "vpif_capture",
2365 .owner
= THIS_MODULE
,
2366 .pm
= &vpif_dev_pm_ops
,
2368 .probe
= vpif_probe
,
2369 .remove
= vpif_remove
,
2373 * vpif_init: initialize the vpif driver
2375 * This function registers device and driver to the kernel, requests irq
2376 * handler and allocates memory
2377 * for channel objects
2379 static __init
int vpif_init(void)
2381 return platform_driver_register(&vpif_driver
);
2385 * vpif_cleanup : This function clean up the vpif capture resources
2387 * This will un-registers device and driver to the kernel, frees
2388 * requested irq handler and de-allocates memory allocated for channel
2391 static void vpif_cleanup(void)
2393 struct platform_device
*pdev
;
2394 struct resource
*res
;
2398 pdev
= container_of(vpif_dev
, struct platform_device
, dev
);
2399 while ((res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, i
))) {
2400 for (irq_num
= res
->start
; irq_num
<= res
->end
; irq_num
++)
2402 (void *)(&vpif_obj
.dev
[i
]->channel_id
));
2406 platform_driver_unregister(&vpif_driver
);
2409 for (i
= 0; i
< VPIF_CAPTURE_MAX_DEVICES
; i
++)
2410 kfree(vpif_obj
.dev
[i
]);
2413 /* Function for module initialization and cleanup */
2414 module_init(vpif_init
);
2415 module_exit(vpif_cleanup
);