]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blame - drivers/media/video/davinci/vpif_capture.c
projects / mirror_ubuntu-jammy-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[media] vpif_cap/disp: Add debug functionality
[mirror_ubuntu-jammy-kernel.git] / drivers / media / video / davinci / vpif_capture.c
CommitLineData
6ffefff5
MK		 1/*
2 * Copyright (C) 2009 Texas Instruments Inc
3 *
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.
8 *
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.
13 *
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
17 *
18 * TODO : add support for VBI & HBI data service
19 * add static buffer allocation
20 */
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/module.h>
24#include <linux/errno.h>
25#include <linux/fs.h>
26#include <linux/mm.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>
35#include <linux/io.h>
36#include <linux/version.h>
5a0e3ad6 37#include <linux/slab.h>
6ffefff5
MK		 38#include <media/v4l2-device.h>
39#include <media/v4l2-ioctl.h>
7036d6a7 40#include <media/v4l2-chip-ident.h>
6ffefff5
MK		 41
42#include "vpif_capture.h"
43#include "vpif.h"
44
45MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver");
46MODULE_LICENSE("GPL");
47
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)
51
52static int debug = 1;
53static u32 ch0_numbuffers = 3;
54static u32 ch1_numbuffers = 3;
55static u32 ch0_bufsize = 1920 * 1080 * 2;
56static u32 ch1_bufsize = 720 * 576 * 2;
57
58module_param(debug, int, 0644);
59module_param(ch0_numbuffers, uint, S_IRUGO);
60module_param(ch1_numbuffers, uint, S_IRUGO);
61module_param(ch0_bufsize, uint, S_IRUGO);
62module_param(ch1_bufsize, uint, S_IRUGO);
63
64MODULE_PARM_DESC(debug, "Debug level 0-1");
65MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)");
66MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)");
67MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)");
68MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)");
69
70static struct vpif_config_params config_params = {
71 .min_numbuffers = 3,
72 .numbuffers[0] = 3,
73 .numbuffers[1] = 3,
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,
78};
79
80/* global variables */
81static struct vpif_device vpif_obj = { {NULL} };
82static struct device *vpif_dev;
83
84/**
85 * ch_params: video standard configuration parameters for vpif
86 */
87static const struct vpif_channel_config_params ch_params[] = {
88 {
89 "NTSC_M", 720, 480, 30, 0, 1, 268, 1440, 1, 23, 263, 266,
90 286, 525, 525, 0, 1, 0, V4L2_STD_525_60,
91 },
92 {
93 "PAL_BDGHIK", 720, 576, 25, 0, 1, 280, 1440, 1, 23, 311, 313,
94 336, 624, 625, 0, 1, 0, V4L2_STD_625_50,
95 },
96};
97
98/**
99 * vpif_uservirt_to_phys : translate user/virtual address to phy address
100 * @virtp: user/virtual address
101 *
102 * This inline function is used to convert user space virtual address to
103 * physical address.
104 */
105static inline u32 vpif_uservirt_to_phys(u32 virtp)
106{
107 unsigned long physp = 0;
108 struct mm_struct *mm = current->mm;
109 struct vm_area_struct *vma;
110
111 vma = find_vma(mm, virtp);
112
113 /* For kernel direct-mapped memory, take the easy way */
114 if (virtp >= PAGE_OFFSET)
115 physp = virt_to_phys((void *)virtp);
116 else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff))
117 /**
118 * this will catch, kernel-allocated, mmaped-to-usermode
119 * addresses
120 */
121 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
122 else {
123 /* otherwise, use get_user_pages() for general userland pages */
124 int res, nr_pages = 1;
125 struct page *pages;
126
127 down_read(&current->mm->mmap_sem);
128
129 res = get_user_pages(current, current->mm,
130 virtp, nr_pages, 1, 0, &pages, NULL);
131 up_read(&current->mm->mmap_sem);
132
133 if (res == nr_pages)
134 physp = __pa(page_address(&pages[0]) +
135 (virtp & ~PAGE_MASK));
136 else {
137 vpif_err("get_user_pages failed\n");
138 return 0;
139 }
140 }
141 return physp;
142}
143
144/**
145 * buffer_prepare : callback function for buffer prepare
146 * @q : buffer queue ptr
147 * @vb: ptr to video buffer
148 * @field: field info
149 *
150 * This is the callback function for buffer prepare when videobuf_qbuf()
151 * function is called. The buffer is prepared and user space virtual address
152 * or user address is converted into physical address
153 */
154static int vpif_buffer_prepare(struct videobuf_queue *q,
155 struct videobuf_buffer *vb,
156 enum v4l2_field field)
157{
158 /* Get the file handle object and channel object */
159 struct vpif_fh *fh = q->priv_data;
160 struct channel_obj *ch = fh->channel;
161 struct common_obj *common;
162 unsigned long addr;
163
164
165 vpif_dbg(2, debug, "vpif_buffer_prepare\n");
166
167 common = &ch->common[VPIF_VIDEO_INDEX];
168
169 /* If buffer is not initialized, initialize it */
170 if (VIDEOBUF_NEEDS_INIT == vb->state) {
171 vb->width = common->width;
172 vb->height = common->height;
173 vb->size = vb->width * vb->height;
174 vb->field = field;
175 }
176 vb->state = VIDEOBUF_PREPARED;
177 /**
178 * if user pointer memory mechanism is used, get the physical
179 * address of the buffer
180 */
181 if (V4L2_MEMORY_USERPTR == common->memory) {
182 if (0 == vb->baddr) {
183 vpif_dbg(1, debug, "buffer address is 0\n");
184 return -EINVAL;
185
186 }
187 vb->boff = vpif_uservirt_to_phys(vb->baddr);
188 if (!IS_ALIGNED(vb->boff, 8))
189 goto exit;
190 }
191
192 addr = vb->boff;
193 if (q->streaming) {
194 if (!IS_ALIGNED((addr + common->ytop_off), 8) ||
195 !IS_ALIGNED((addr + common->ybtm_off), 8) ||
196 !IS_ALIGNED((addr + common->ctop_off), 8) ||
197 !IS_ALIGNED((addr + common->cbtm_off), 8))
198 goto exit;
199 }
200 return 0;
201exit:
202 vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n");
203 return -EINVAL;
204}
205
206/**
207 * vpif_buffer_setup : Callback function for buffer setup.
208 * @q: buffer queue ptr
209 * @count: number of buffers
210 * @size: size of the buffer
211 *
212 * This callback function is called when reqbuf() is called to adjust
213 * the buffer count and buffer size
214 */
215static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count,
216 unsigned int *size)
217{
218 /* Get the file handle object and channel object */
219 struct vpif_fh *fh = q->priv_data;
220 struct channel_obj *ch = fh->channel;
221 struct common_obj *common;
222
223 common = &ch->common[VPIF_VIDEO_INDEX];
224
225 vpif_dbg(2, debug, "vpif_buffer_setup\n");
226
227 /* If memory type is not mmap, return */
228 if (V4L2_MEMORY_MMAP != common->memory)
229 return 0;
230
231 /* Calculate the size of the buffer */
232 *size = config_params.channel_bufsize[ch->channel_id];
233
234 if (*count < config_params.min_numbuffers)
235 *count = config_params.min_numbuffers;
236 return 0;
237}
238
239/**
240 * vpif_buffer_queue : Callback function to add buffer to DMA queue
241 * @q: ptr to videobuf_queue
242 * @vb: ptr to videobuf_buffer
243 */
244static void vpif_buffer_queue(struct videobuf_queue *q,
245 struct videobuf_buffer *vb)
246{
247 /* Get the file handle object and channel object */
248 struct vpif_fh *fh = q->priv_data;
249 struct channel_obj *ch = fh->channel;
250 struct common_obj *common;
251
252 common = &ch->common[VPIF_VIDEO_INDEX];
253
254 vpif_dbg(2, debug, "vpif_buffer_queue\n");
255
256 /* add the buffer to the DMA queue */
257 list_add_tail(&vb->queue, &common->dma_queue);
258 /* Change state of the buffer */
259 vb->state = VIDEOBUF_QUEUED;
260}
261
262/**
263 * vpif_buffer_release : Callback function to free buffer
264 * @q: buffer queue ptr
265 * @vb: ptr to video buffer
266 *
267 * This function is called from the videobuf layer to free memory
268 * allocated to the buffers
269 */
270static void vpif_buffer_release(struct videobuf_queue *q,
271 struct videobuf_buffer *vb)
272{
273 /* Get the file handle object and channel object */
274 struct vpif_fh *fh = q->priv_data;
275 struct channel_obj *ch = fh->channel;
276 struct common_obj *common;
277
278 common = &ch->common[VPIF_VIDEO_INDEX];
279
280 videobuf_dma_contig_free(q, vb);
281 vb->state = VIDEOBUF_NEEDS_INIT;
282}
283
284static struct videobuf_queue_ops video_qops = {
285 .buf_setup = vpif_buffer_setup,
286 .buf_prepare = vpif_buffer_prepare,
287 .buf_queue = vpif_buffer_queue,
288 .buf_release = vpif_buffer_release,
289};
290
291static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] =
292 { {1, 1} };
293
294/**
295 * vpif_process_buffer_complete: process a completed buffer
296 * @common: ptr to common channel object
297 *
298 * This function time stamp the buffer and mark it as DONE. It also
299 * wake up any process waiting on the QUEUE and set the next buffer
300 * as current
301 */
302static void vpif_process_buffer_complete(struct common_obj *common)
303{
304 do_gettimeofday(&common->cur_frm->ts);
305 common->cur_frm->state = VIDEOBUF_DONE;
306 wake_up_interruptible(&common->cur_frm->done);
307 /* Make curFrm pointing to nextFrm */
308 common->cur_frm = common->next_frm;
309}
310
311/**
312 * vpif_schedule_next_buffer: set next buffer address for capture
313 * @common : ptr to common channel object
314 *
315 * This function will get next buffer from the dma queue and
316 * set the buffer address in the vpif register for capture.
317 * the buffer is marked active
318 */
319static void vpif_schedule_next_buffer(struct common_obj *common)
320{
321 unsigned long addr = 0;
322
323 common->next_frm = list_entry(common->dma_queue.next,
324 struct videobuf_buffer, queue);
325 /* Remove that buffer from the buffer queue */
326 list_del(&common->next_frm->queue);
327 common->next_frm->state = VIDEOBUF_ACTIVE;
328 if (V4L2_MEMORY_USERPTR == common->memory)
329 addr = common->next_frm->boff;
330 else
331 addr = videobuf_to_dma_contig(common->next_frm);
332
333 /* Set top and bottom field addresses in VPIF registers */
334 common->set_addr(addr + common->ytop_off,
335 addr + common->ybtm_off,
336 addr + common->ctop_off,
337 addr + common->cbtm_off);
338}
339
340/**
341 * vpif_channel_isr : ISR handler for vpif capture
342 * @irq: irq number
343 * @dev_id: dev_id ptr
344 *
345 * It changes status of the captured buffer, takes next buffer from the queue
346 * and sets its address in VPIF registers
347 */
348static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
349{
350 struct vpif_device *dev = &vpif_obj;
351 struct common_obj *common;
352 struct channel_obj *ch;
353 enum v4l2_field field;
354 int channel_id = 0;
355 int fid = -1, i;
356
357 channel_id = *(int *)(dev_id);
358 ch = dev->dev[channel_id];
359
360 field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
361
362 for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
363 common = &ch->common[i];
364 /* skip If streaming is not started in this channel */
365 if (0 == common->started)
366 continue;
367
368 /* Check the field format */
369 if (1 == ch->vpifparams.std_info.frm_fmt) {
370 /* Progressive mode */
371 if (list_empty(&common->dma_queue))
372 continue;
373
374 if (!channel_first_int[i][channel_id])
375 vpif_process_buffer_complete(common);
376
377 channel_first_int[i][channel_id] = 0;
378
379 vpif_schedule_next_buffer(common);
380
381
382 channel_first_int[i][channel_id] = 0;
383 } else {
384 /**
385 * Interlaced mode. If it is first interrupt, ignore
386 * it
387 */
388 if (channel_first_int[i][channel_id]) {
389 channel_first_int[i][channel_id] = 0;
390 continue;
391 }
392 if (0 == i) {
393 ch->field_id ^= 1;
394 /* Get field id from VPIF registers */
395 fid = vpif_channel_getfid(ch->channel_id);
396 if (fid != ch->field_id) {
397 /**
398 * If field id does not match stored
399 * field id, make them in sync
400 */
401 if (0 == fid)
402 ch->field_id = fid;
403 return IRQ_HANDLED;
404 }
405 }
406 /* device field id and local field id are in sync */
407 if (0 == fid) {
408 /* this is even field */
409 if (common->cur_frm == common->next_frm)
410 continue;
411
412 /* mark the current buffer as done */
413 vpif_process_buffer_complete(common);
414 } else if (1 == fid) {
415 /* odd field */
416 if (list_empty(&common->dma_queue) ||
417 (common->cur_frm != common->next_frm))
418 continue;
419
420 vpif_schedule_next_buffer(common);
421 }
422 }
423 }
424 return IRQ_HANDLED;
425}
426
427/**
428 * vpif_update_std_info() - update standard related info
429 * @ch: ptr to channel object
430 *
431 * For a given standard selected by application, update values
432 * in the device data structures
433 */
434static int vpif_update_std_info(struct channel_obj *ch)
435{
436 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
437 struct vpif_params *vpifparams = &ch->vpifparams;
438 const struct vpif_channel_config_params *config;
439 struct vpif_channel_config_params *std_info;
440 struct video_obj *vid_ch = &ch->video;
441 int index;
442
443 vpif_dbg(2, debug, "vpif_update_std_info\n");
444
445 std_info = &vpifparams->std_info;
446
447 for (index = 0; index < ARRAY_SIZE(ch_params); index++) {
448 config = &ch_params[index];
449 if (config->stdid & vid_ch->stdid) {
450 memcpy(std_info, config, sizeof(*config));
451 break;
452 }
453 }
454
455 /* standard not found */
456 if (index == ARRAY_SIZE(ch_params))
457 return -EINVAL;
458
459 common->fmt.fmt.pix.width = std_info->width;
460 common->width = std_info->width;
461 common->fmt.fmt.pix.height = std_info->height;
462 common->height = std_info->height;
463 common->fmt.fmt.pix.bytesperline = std_info->width;
464 vpifparams->video_params.hpitch = std_info->width;
465 vpifparams->video_params.storage_mode = std_info->frm_fmt;
466 return 0;
467}
468
469/**
470 * vpif_calculate_offsets : This function calculates buffers offsets
471 * @ch : ptr to channel object
472 *
473 * This function calculates buffer offsets for Y and C in the top and
474 * bottom field
475 */
476static void vpif_calculate_offsets(struct channel_obj *ch)
477{
478 unsigned int hpitch, vpitch, sizeimage;
479 struct video_obj *vid_ch = &(ch->video);
480 struct vpif_params *vpifparams = &ch->vpifparams;
481 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
482 enum v4l2_field field = common->fmt.fmt.pix.field;
483
484 vpif_dbg(2, debug, "vpif_calculate_offsets\n");
485
486 if (V4L2_FIELD_ANY == field) {
487 if (vpifparams->std_info.frm_fmt)
488 vid_ch->buf_field = V4L2_FIELD_NONE;
489 else
490 vid_ch->buf_field = V4L2_FIELD_INTERLACED;
491 } else
492 vid_ch->buf_field = common->fmt.fmt.pix.field;
493
494 if (V4L2_MEMORY_USERPTR == common->memory)
495 sizeimage = common->fmt.fmt.pix.sizeimage;
496 else
497 sizeimage = config_params.channel_bufsize[ch->channel_id];
498
499 hpitch = common->fmt.fmt.pix.bytesperline;
500 vpitch = sizeimage / (hpitch * 2);
501
502 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
503 (V4L2_FIELD_INTERLACED == 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 = hpitch;
507 common->ctop_off = sizeimage / 2;
508 common->cbtm_off = sizeimage / 2 + hpitch;
509 } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
510 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
511 common->ytop_off = 0;
512 common->ybtm_off = sizeimage / 4;
513 common->ctop_off = sizeimage / 2;
514 common->cbtm_off = common->ctop_off + sizeimage / 4;
515 } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
516 /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */
517 common->ybtm_off = 0;
518 common->ytop_off = sizeimage / 4;
519 common->cbtm_off = sizeimage / 2;
520 common->ctop_off = common->cbtm_off + sizeimage / 4;
521 }
522 if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
523 (V4L2_FIELD_INTERLACED == vid_ch->buf_field))
524 vpifparams->video_params.storage_mode = 1;
525 else
526 vpifparams->video_params.storage_mode = 0;
527
528 if (1 == vpifparams->std_info.frm_fmt)
529 vpifparams->video_params.hpitch =
530 common->fmt.fmt.pix.bytesperline;
531 else {
532 if ((field == V4L2_FIELD_ANY)
533 || (field == V4L2_FIELD_INTERLACED))
534 vpifparams->video_params.hpitch =
535 common->fmt.fmt.pix.bytesperline * 2;
536 else
537 vpifparams->video_params.hpitch =
538 common->fmt.fmt.pix.bytesperline;
539 }
540
541 ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
542}
543
544/**
545 * vpif_config_format: configure default frame format in the device
546 * ch : ptr to channel object
547 */
548static void vpif_config_format(struct channel_obj *ch)
549{
550 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
551
552 vpif_dbg(2, debug, "vpif_config_format\n");
553
554 common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
555 if (config_params.numbuffers[ch->channel_id] == 0)
556 common->memory = V4L2_MEMORY_USERPTR;
557 else
558 common->memory = V4L2_MEMORY_MMAP;
559
560 common->fmt.fmt.pix.sizeimage
561 = config_params.channel_bufsize[ch->channel_id];
562
563 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER)
564 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8;
565 else
566 common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
567 common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
568}
569
570/**
571 * vpif_get_default_field() - Get default field type based on interface
572 * @vpif_params - ptr to vpif params
573 */
574static inline enum v4l2_field vpif_get_default_field(
575 struct vpif_interface *iface)
576{
577 return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
578 V4L2_FIELD_INTERLACED;
579}
580
581/**
582 * vpif_check_format() - check given pixel format for compatibility
583 * @ch - channel ptr
584 * @pixfmt - Given pixel format
585 * @update - update the values as per hardware requirement
586 *
587 * Check the application pixel format for S_FMT and update the input
588 * values as per hardware limits for TRY_FMT. The default pixel and
589 * field format is selected based on interface type.
590 */
591static int vpif_check_format(struct channel_obj *ch,
592 struct v4l2_pix_format *pixfmt,
593 int update)
594{
595 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
596 struct vpif_params *vpif_params = &ch->vpifparams;
597 enum v4l2_field field = pixfmt->field;
598 u32 sizeimage, hpitch, vpitch;
599 int ret = -EINVAL;
600
601 vpif_dbg(2, debug, "vpif_check_format\n");
602 /**
603 * first check for the pixel format. If if_type is Raw bayer,
604 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
605 * V4L2_PIX_FMT_YUV422P is supported
606 */
607 if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
608 if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
609 if (!update) {
610 vpif_dbg(2, debug, "invalid pix format\n");
611 goto exit;
612 }
613 pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
614 }
615 } else {
616 if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
617 if (!update) {
618 vpif_dbg(2, debug, "invalid pixel format\n");
619 goto exit;
620 }
621 pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
622 }
623 }
624
625 if (!(VPIF_VALID_FIELD(field))) {
626 if (!update) {
627 vpif_dbg(2, debug, "invalid field format\n");
628 goto exit;
629 }
630 /**
631 * By default use FIELD_NONE for RAW Bayer capture
632 * and FIELD_INTERLACED for other interfaces
633 */
634 field = vpif_get_default_field(&vpif_params->iface);
635 } else if (field == V4L2_FIELD_ANY)
636 /* unsupported field. Use default */
637 field = vpif_get_default_field(&vpif_params->iface);
638
639 /* validate the hpitch */
640 hpitch = pixfmt->bytesperline;
641 if (hpitch < vpif_params->std_info.width) {
642 if (!update) {
643 vpif_dbg(2, debug, "invalid hpitch\n");
644 goto exit;
645 }
646 hpitch = vpif_params->std_info.width;
647 }
648
649 if (V4L2_MEMORY_USERPTR == common->memory)
650 sizeimage = pixfmt->sizeimage;
651 else
652 sizeimage = config_params.channel_bufsize[ch->channel_id];
653
654 vpitch = sizeimage / (hpitch * 2);
655
656 /* validate the vpitch */
657 if (vpitch < vpif_params->std_info.height) {
658 if (!update) {
659 vpif_dbg(2, debug, "Invalid vpitch\n");
660 goto exit;
661 }
662 vpitch = vpif_params->std_info.height;
663 }
664
665 /* Check for 8 byte alignment */
666 if (!ALIGN(hpitch, 8)) {
667 if (!update) {
668 vpif_dbg(2, debug, "invalid pitch alignment\n");
669 goto exit;
670 }
671 /* adjust to next 8 byte boundary */
672 hpitch = (((hpitch + 7) / 8) * 8);
673 }
674 /* if update is set, modify the bytesperline and sizeimage */
675 if (update) {
676 pixfmt->bytesperline = hpitch;
677 pixfmt->sizeimage = hpitch * vpitch * 2;
678 }
679 /**
680 * Image width and height is always based on current standard width and
681 * height
682 */
683 pixfmt->width = common->fmt.fmt.pix.width;
684 pixfmt->height = common->fmt.fmt.pix.height;
685 return 0;
686exit:
687 return ret;
688}
689
690/**
691 * vpif_config_addr() - function to configure buffer address in vpif
692 * @ch - channel ptr
693 * @muxmode - channel mux mode
694 */
695static void vpif_config_addr(struct channel_obj *ch, int muxmode)
696{
697 struct common_obj *common;
698
699 vpif_dbg(2, debug, "vpif_config_addr\n");
700
701 common = &(ch->common[VPIF_VIDEO_INDEX]);
702
703 if (VPIF_CHANNEL1_VIDEO == ch->channel_id)
704 common->set_addr = ch1_set_videobuf_addr;
705 else if (2 == muxmode)
706 common->set_addr = ch0_set_videobuf_addr_yc_nmux;
707 else
708 common->set_addr = ch0_set_videobuf_addr;
709}
710
711/**
712 * vpfe_mmap : It is used to map kernel space buffers into user spaces
713 * @filep: file pointer
714 * @vma: ptr to vm_area_struct
715 */
716static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
717{
718 /* Get the channel object and file handle object */
719 struct vpif_fh *fh = filep->private_data;
720 struct channel_obj *ch = fh->channel;
721 struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
722
723 vpif_dbg(2, debug, "vpif_mmap\n");
724
725 return videobuf_mmap_mapper(&common->buffer_queue, vma);
726}
727
728/**
729 * vpif_poll: It is used for select/poll system call
730 * @filep: file pointer
731 * @wait: poll table to wait
732 */
733static unsigned int vpif_poll(struct file *filep, poll_table * wait)
734{
6ffefff5
MK		 735 struct vpif_fh *fh = filep->private_data;
736 struct channel_obj *channel = fh->channel;
737 struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]);
738
739 vpif_dbg(2, debug, "vpif_poll\n");
740
741 if (common->started)
11382f3d 742 return videobuf_poll_stream(filep, &common->buffer_queue, wait);
6ffefff5
MK		 743 return 0;
744}
745
746/**
747 * vpif_open : vpif open handler
748 * @filep: file ptr
749 *
750 * It creates object of file handle structure and stores it in private_data
751 * member of filepointer
752 */
753static int vpif_open(struct file *filep)
754{
755 struct vpif_capture_config *config = vpif_dev->platform_data;
756 struct video_device *vdev = video_devdata(filep);
757 struct common_obj *common;
758 struct video_obj *vid_ch;
759 struct channel_obj *ch;
760 struct vpif_fh *fh;
761 int i, ret = 0;
762
763 vpif_dbg(2, debug, "vpif_open\n");
764
765 ch = video_get_drvdata(vdev);
766
767 vid_ch = &ch->video;
768 common = &ch->common[VPIF_VIDEO_INDEX];
769
770 if (mutex_lock_interruptible(&common->lock))
771 return -ERESTARTSYS;
772
773 if (NULL == ch->curr_subdev_info) {
774 /**
775 * search through the sub device to see a registered
776 * sub device and make it as current sub device
777 */
778 for (i = 0; i < config->subdev_count; i++) {
779 if (vpif_obj.sd[i]) {
780 /* the sub device is registered */
781 ch->curr_subdev_info = &config->subdev_info[i];
782 /* make first input as the current input */
783 vid_ch->input_idx = 0;
784 break;
785 }
786 }
787 if (i == config->subdev_count) {
788 vpif_err("No sub device registered\n");
789 ret = -ENOENT;
790 goto exit;
791 }
792 }
793
794 /* Allocate memory for the file handle object */
1f8766b4 795 fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
6ffefff5
MK		 796 if (NULL == fh) {
797 vpif_err("unable to allocate memory for file handle object\n");
798 ret = -ENOMEM;
799 goto exit;
800 }
801
802 /* store pointer to fh in private_data member of filep */
803 filep->private_data = fh;
804 fh->channel = ch;
805 fh->initialized = 0;
806 /* If decoder is not initialized. initialize it */
807 if (!ch->initialized) {
808 fh->initialized = 1;
809 ch->initialized = 1;
810 memset(&(ch->vpifparams), 0, sizeof(struct vpif_params));
811 }
812 /* Increment channel usrs counter */
813 ch->usrs++;
814 /* Set io_allowed member to false */
815 fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
816 /* Initialize priority of this instance to default priority */
817 fh->prio = V4L2_PRIORITY_UNSET;
818 v4l2_prio_open(&ch->prio, &fh->prio);
819exit:
820 mutex_unlock(&common->lock);
821 return ret;
822}
823
824/**
825 * vpif_release : function to clean up file close
826 * @filep: file pointer
827 *
828 * This function deletes buffer queue, frees the buffers and the vpfe file
829 * handle
830 */
831static int vpif_release(struct file *filep)
832{
833 struct vpif_fh *fh = filep->private_data;
834 struct channel_obj *ch = fh->channel;
835 struct common_obj *common;
836
837 vpif_dbg(2, debug, "vpif_release\n");
838
839 common = &ch->common[VPIF_VIDEO_INDEX];
840
841 if (mutex_lock_interruptible(&common->lock))
842 return -ERESTARTSYS;
843
844 /* if this instance is doing IO */
845 if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
846 /* Reset io_usrs member of channel object */
847 common->io_usrs = 0;
848 /* Disable channel as per its device type and channel id */
849 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
850 enable_channel0(0);
851 channel0_intr_enable(0);
852 }
853 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
854 (2 == common->started)) {
855 enable_channel1(0);
856 channel1_intr_enable(0);
857 }
858 common->started = 0;
859 /* Free buffers allocated */
860 videobuf_queue_cancel(&common->buffer_queue);
861 videobuf_mmap_free(&common->buffer_queue);
862 }
863
864 /* Decrement channel usrs counter */
865 ch->usrs--;
866
867 /* unlock mutex on channel object */
868 mutex_unlock(&common->lock);
869
870 /* Close the priority */
ffb4877b 871 v4l2_prio_close(&ch->prio, fh->prio);
6ffefff5
MK		 872
873 if (fh->initialized)
874 ch->initialized = 0;
875
876 filep->private_data = NULL;
877 kfree(fh);
878 return 0;
879}
880
881/**
882 * vpif_reqbufs() - request buffer handler
883 * @file: file ptr
884 * @priv: file handle
885 * @reqbuf: request buffer structure ptr
886 */
887static int vpif_reqbufs(struct file *file, void *priv,
888 struct v4l2_requestbuffers *reqbuf)
889{
890 struct vpif_fh *fh = priv;
891 struct channel_obj *ch = fh->channel;
892 struct common_obj *common;
893 u8 index = 0;
894 int ret = 0;
895
896 vpif_dbg(2, debug, "vpif_reqbufs\n");
897
898 /**
899 * This file handle has not initialized the channel,
900 * It is not allowed to do settings
901 */
902 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)
903 || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
904 if (!fh->initialized) {
905 vpif_dbg(1, debug, "Channel Busy\n");
906 return -EBUSY;
907 }
908 }
909
910 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type)
911 return -EINVAL;
912
913 index = VPIF_VIDEO_INDEX;
914
915 common = &ch->common[index];
916
917 if (mutex_lock_interruptible(&common->lock))
918 return -ERESTARTSYS;
919
920 if (0 != common->io_usrs) {
921 ret = -EBUSY;
922 goto reqbuf_exit;
923 }
924
925 /* Initialize videobuf queue as per the buffer type */
926 videobuf_queue_dma_contig_init(&common->buffer_queue,
927 &video_qops, NULL,
928 &common->irqlock,
929 reqbuf->type,
930 common->fmt.fmt.pix.field,
e3cfd447
HV		 931 sizeof(struct videobuf_buffer), fh,
932 NULL);
6ffefff5
MK		 933
934 /* Set io allowed member of file handle to TRUE */
935 fh->io_allowed[index] = 1;
936 /* Increment io usrs member of channel object to 1 */
937 common->io_usrs = 1;
938 /* Store type of memory requested in channel object */
939 common->memory = reqbuf->memory;
940 INIT_LIST_HEAD(&common->dma_queue);
941
942 /* Allocate buffers */
943 ret = videobuf_reqbufs(&common->buffer_queue, reqbuf);
944
945reqbuf_exit:
946 mutex_unlock(&common->lock);
947 return ret;
948}
949
950/**
951 * vpif_querybuf() - query buffer handler
952 * @file: file ptr
953 * @priv: file handle
954 * @buf: v4l2 buffer structure ptr
955 */
956static int vpif_querybuf(struct file *file, void *priv,
957 struct v4l2_buffer *buf)
958{
959 struct vpif_fh *fh = priv;
960 struct channel_obj *ch = fh->channel;
961 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
962
963 vpif_dbg(2, debug, "vpif_querybuf\n");
964
965 if (common->fmt.type != buf->type)
966 return -EINVAL;
967
968 if (common->memory != V4L2_MEMORY_MMAP) {
969 vpif_dbg(1, debug, "Invalid memory\n");
970 return -EINVAL;
971 }
972
973 return videobuf_querybuf(&common->buffer_queue, buf);
974}
975
976/**
977 * vpif_qbuf() - query buffer handler
978 * @file: file ptr
979 * @priv: file handle
980 * @buf: v4l2 buffer structure ptr
981 */
982static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
983{
984
985 struct vpif_fh *fh = priv;
986 struct channel_obj *ch = fh->channel;
987 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
988 struct v4l2_buffer tbuf = *buf;
989 struct videobuf_buffer *buf1;
990 unsigned long addr = 0;
991 unsigned long flags;
992 int ret = 0;
993
994 vpif_dbg(2, debug, "vpif_qbuf\n");
995
996 if (common->fmt.type != tbuf.type) {
997 vpif_err("invalid buffer type\n");
998 return -EINVAL;
999 }
1000
1001 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1002 vpif_err("fh io not allowed \n");
1003 return -EACCES;
1004 }
1005
1006 if (!(list_empty(&common->dma_queue)) ||
1007 (common->cur_frm != common->next_frm) ||
1008 !common->started ||
1009 (common->started && (0 == ch->field_id)))
1010 return videobuf_qbuf(&common->buffer_queue, buf);
1011
1012 /* bufferqueue is empty store buffer address in VPIF registers */
1013 mutex_lock(&common->buffer_queue.vb_lock);
1014 buf1 = common->buffer_queue.bufs[tbuf.index];
1015
1016 if ((buf1->state == VIDEOBUF_QUEUED) ||
1017 (buf1->state == VIDEOBUF_ACTIVE)) {
1018 vpif_err("invalid state\n");
1019 goto qbuf_exit;
1020 }
1021
1022 switch (buf1->memory) {
1023 case V4L2_MEMORY_MMAP:
1024 if (buf1->baddr == 0)
1025 goto qbuf_exit;
1026 break;
1027
1028 case V4L2_MEMORY_USERPTR:
1029 if (tbuf.length < buf1->bsize)
1030 goto qbuf_exit;
1031
1032 if ((VIDEOBUF_NEEDS_INIT != buf1->state)
473d8024 1033 && (buf1->baddr != tbuf.m.userptr)) {
6ffefff5
MK		 1034 vpif_buffer_release(&common->buffer_queue, buf1);
1035 buf1->baddr = tbuf.m.userptr;
473d8024 1036 }
6ffefff5
MK		 1037 break;
1038
1039 default:
1040 goto qbuf_exit;
1041 }
1042
1043 local_irq_save(flags);
1044 ret = vpif_buffer_prepare(&common->buffer_queue, buf1,
1045 common->buffer_queue.field);
1046 if (ret < 0) {
1047 local_irq_restore(flags);
1048 goto qbuf_exit;
1049 }
1050
1051 buf1->state = VIDEOBUF_ACTIVE;
1052
1053 if (V4L2_MEMORY_USERPTR == common->memory)
1054 addr = buf1->boff;
1055 else
1056 addr = videobuf_to_dma_contig(buf1);
1057
1058 common->next_frm = buf1;
1059 common->set_addr(addr + common->ytop_off,
1060 addr + common->ybtm_off,
1061 addr + common->ctop_off,
1062 addr + common->cbtm_off);
1063
1064 local_irq_restore(flags);
1065 list_add_tail(&buf1->stream, &common->buffer_queue.stream);
1066 mutex_unlock(&common->buffer_queue.vb_lock);
1067 return 0;
1068
1069qbuf_exit:
1070 mutex_unlock(&common->buffer_queue.vb_lock);
1071 return -EINVAL;
1072}
1073
1074/**
1075 * vpif_dqbuf() - query buffer handler
1076 * @file: file ptr
1077 * @priv: file handle
1078 * @buf: v4l2 buffer structure ptr
1079 */
1080static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1081{
1082 struct vpif_fh *fh = priv;
1083 struct channel_obj *ch = fh->channel;
1084 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1085
1086 vpif_dbg(2, debug, "vpif_dqbuf\n");
1087
1088 return videobuf_dqbuf(&common->buffer_queue, buf,
1089 file->f_flags & O_NONBLOCK);
1090}
1091
1092/**
1093 * vpif_streamon() - streamon handler
1094 * @file: file ptr
1095 * @priv: file handle
1096 * @buftype: v4l2 buffer type
1097 */
1098static int vpif_streamon(struct file *file, void *priv,
1099 enum v4l2_buf_type buftype)
1100{
1101
1102 struct vpif_capture_config *config = vpif_dev->platform_data;
1103 struct vpif_fh *fh = priv;
1104 struct channel_obj *ch = fh->channel;
1105 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1106 struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1107 struct vpif_params *vpif;
1108 unsigned long addr = 0;
1109 int ret = 0;
1110
1111 vpif_dbg(2, debug, "vpif_streamon\n");
1112
1113 vpif = &ch->vpifparams;
1114
1115 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1116 vpif_dbg(1, debug, "buffer type not supported\n");
1117 return -EINVAL;
1118 }
1119
1120 /* If file handle is not allowed IO, return error */
1121 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1122 vpif_dbg(1, debug, "io not allowed\n");
1123 return -EACCES;
1124 }
1125
1126 /* If Streaming is already started, return error */
1127 if (common->started) {
1128 vpif_dbg(1, debug, "channel->started\n");
1129 return -EBUSY;
1130 }
1131
1132 if ((ch->channel_id == VPIF_CHANNEL0_VIDEO &&
1133 oth_ch->common[VPIF_VIDEO_INDEX].started &&
1134 vpif->std_info.ycmux_mode == 0) ||
1135 ((ch->channel_id == VPIF_CHANNEL1_VIDEO) &&
1136 (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1137 vpif_dbg(1, debug, "other channel is being used\n");
1138 return -EBUSY;
1139 }
1140
1141 ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0);
1142 if (ret)
1143 return ret;
1144
1145 /* Enable streamon on the sub device */
1146 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1147 s_stream, 1);
1148
1149 if (ret && (ret != -ENOIOCTLCMD)) {
1150 vpif_dbg(1, debug, "stream on failed in subdev\n");
1151 return ret;
1152 }
1153
1154 /* Call videobuf_streamon to start streaming in videobuf */
1155 ret = videobuf_streamon(&common->buffer_queue);
1156 if (ret) {
1157 vpif_dbg(1, debug, "videobuf_streamon\n");
1158 return ret;
1159 }
1160
1161 if (mutex_lock_interruptible(&common->lock)) {
1162 ret = -ERESTARTSYS;
1163 goto streamoff_exit;
1164 }
1165
1166 /* If buffer queue is empty, return error */
1167 if (list_empty(&common->dma_queue)) {
1168 vpif_dbg(1, debug, "buffer queue is empty\n");
1169 ret = -EIO;
1170 goto exit;
1171 }
1172
1173 /* Get the next frame from the buffer queue */
1174 common->cur_frm = list_entry(common->dma_queue.next,
1175 struct videobuf_buffer, queue);
1176 common->next_frm = common->cur_frm;
1177
1178 /* Remove buffer from the buffer queue */
1179 list_del(&common->cur_frm->queue);
1180 /* Mark state of the current frame to active */
1181 common->cur_frm->state = VIDEOBUF_ACTIVE;
1182 /* Initialize field_id and started member */
1183 ch->field_id = 0;
1184 common->started = 1;
1185
1186 if (V4L2_MEMORY_USERPTR == common->memory)
1187 addr = common->cur_frm->boff;
1188 else
1189 addr = videobuf_to_dma_contig(common->cur_frm);
1190
1191 /* Calculate the offset for Y and C data in the buffer */
1192 vpif_calculate_offsets(ch);
1193
1194 if ((vpif->std_info.frm_fmt &&
1195 ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) &&
1196 (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) ||
1197 (!vpif->std_info.frm_fmt &&
1198 (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
1199 vpif_dbg(1, debug, "conflict in field format and std format\n");
1200 ret = -EINVAL;
1201 goto exit;
1202 }
1203
1204 /* configure 1 or 2 channel mode */
1205 ret = config->setup_input_channel_mode(vpif->std_info.ycmux_mode);
1206
1207 if (ret < 0) {
1208 vpif_dbg(1, debug, "can't set vpif channel mode\n");
1209 goto exit;
1210 }
1211
1212 /* Call vpif_set_params function to set the parameters and addresses */
1213 ret = vpif_set_video_params(vpif, ch->channel_id);
1214
1215 if (ret < 0) {
1216 vpif_dbg(1, debug, "can't set video params\n");
1217 goto exit;
1218 }
1219
1220 common->started = ret;
1221 vpif_config_addr(ch, ret);
1222
1223 common->set_addr(addr + common->ytop_off,
1224 addr + common->ybtm_off,
1225 addr + common->ctop_off,
1226 addr + common->cbtm_off);
1227
1228 /**
1229 * Set interrupt for both the fields in VPIF Register enable channel in
1230 * VPIF register
1231 */
1232 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id)) {
1233 channel0_intr_assert();
1234 channel0_intr_enable(1);
1235 enable_channel0(1);
1236 }
1237 if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) ||
1238 (common->started == 2)) {
1239 channel1_intr_assert();
1240 channel1_intr_enable(1);
1241 enable_channel1(1);
1242 }
1243 channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
1244 mutex_unlock(&common->lock);
1245 return ret;
1246
1247exit:
1248 mutex_unlock(&common->lock);
1249streamoff_exit:
1250 ret = videobuf_streamoff(&common->buffer_queue);
1251 return ret;
1252}
1253
1254/**
1255 * vpif_streamoff() - streamoff handler
1256 * @file: file ptr
1257 * @priv: file handle
1258 * @buftype: v4l2 buffer type
1259 */
1260static int vpif_streamoff(struct file *file, void *priv,
1261 enum v4l2_buf_type buftype)
1262{
1263
1264 struct vpif_fh *fh = priv;
1265 struct channel_obj *ch = fh->channel;
1266 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1267 int ret;
1268
1269 vpif_dbg(2, debug, "vpif_streamoff\n");
1270
1271 if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1272 vpif_dbg(1, debug, "buffer type not supported\n");
1273 return -EINVAL;
1274 }
1275
1276 /* If io is allowed for this file handle, return error */
1277 if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1278 vpif_dbg(1, debug, "io not allowed\n");
1279 return -EACCES;
1280 }
1281
1282 /* If streaming is not started, return error */
1283 if (!common->started) {
1284 vpif_dbg(1, debug, "channel->started\n");
1285 return -EINVAL;
1286 }
1287
1288 if (mutex_lock_interruptible(&common->lock))
1289 return -ERESTARTSYS;
1290
1291 /* disable channel */
1292 if (VPIF_CHANNEL0_VIDEO == ch->channel_id) {
1293 enable_channel0(0);
1294 channel0_intr_enable(0);
1295 } else {
1296 enable_channel1(0);
1297 channel1_intr_enable(0);
1298 }
1299
1300 common->started = 0;
1301
1302 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1303 s_stream, 0);
1304
1305 if (ret && (ret != -ENOIOCTLCMD))
1306 vpif_dbg(1, debug, "stream off failed in subdev\n");
1307
1308 mutex_unlock(&common->lock);
1309
1310 return videobuf_streamoff(&common->buffer_queue);
1311}
1312
1313/**
1314 * vpif_map_sub_device_to_input() - Maps sub device to input
1315 * @ch - ptr to channel
1316 * @config - ptr to capture configuration
1317 * @input_index - Given input index from application
1318 * @sub_device_index - index into sd table
1319 *
1320 * lookup the sub device information for a given input index.
1321 * we report all the inputs to application. inputs table also
1322 * has sub device name for the each input
1323 */
1324static struct vpif_subdev_info *vpif_map_sub_device_to_input(
1325 struct channel_obj *ch,
1326 struct vpif_capture_config *vpif_cfg,
1327 int input_index,
1328 int *sub_device_index)
1329{
1330 struct vpif_capture_chan_config *chan_cfg;
1331 struct vpif_subdev_info *subdev_info = NULL;
1332 const char *subdev_name = NULL;
1333 int i;
1334
1335 vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n");
1336
1337 chan_cfg = &vpif_cfg->chan_config[ch->channel_id];
1338
1339 /**
1340 * search through the inputs to find the sub device supporting
1341 * the input
1342 */
1343 for (i = 0; i < chan_cfg->input_count; i++) {
1344 /* For each sub device, loop through input */
1345 if (i == input_index) {
1346 subdev_name = chan_cfg->inputs[i].subdev_name;
1347 break;
1348 }
1349 }
1350
1351 /* if reached maximum. return null */
1352 if (i == chan_cfg->input_count || (NULL == subdev_name))
1353 return subdev_info;
1354
1355 /* loop through the sub device list to get the sub device info */
1356 for (i = 0; i < vpif_cfg->subdev_count; i++) {
1357 subdev_info = &vpif_cfg->subdev_info[i];
1358 if (!strcmp(subdev_info->name, subdev_name))
1359 break;
1360 }
1361
1362 if (i == vpif_cfg->subdev_count)
1363 return subdev_info;
1364
1365 /* check if the sub device is registered */
1366 if (NULL == vpif_obj.sd[i])
1367 return NULL;
1368
1369 *sub_device_index = i;
1370 return subdev_info;
1371}
1372
1373/**
1374 * vpif_querystd() - querystd handler
1375 * @file: file ptr
1376 * @priv: file handle
1377 * @std_id: ptr to std id
1378 *
1379 * This function is called to detect standard at the selected input
1380 */
1381static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
1382{
1383 struct vpif_fh *fh = priv;
1384 struct channel_obj *ch = fh->channel;
1385 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1386 int ret = 0;
1387
1388 vpif_dbg(2, debug, "vpif_querystd\n");
1389
1390 if (mutex_lock_interruptible(&common->lock))
1391 return -ERESTARTSYS;
1392
1393 /* Call querystd function of decoder device */
1394 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], video,
1395 querystd, std_id);
1396 if (ret < 0)
1397 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
1398
1399 mutex_unlock(&common->lock);
1400 return ret;
1401}
1402
1403/**
1404 * vpif_g_std() - get STD handler
1405 * @file: file ptr
1406 * @priv: file handle
1407 * @std_id: ptr to std id
1408 */
1409static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1410{
1411 struct vpif_fh *fh = priv;
1412 struct channel_obj *ch = fh->channel;
1413
1414 vpif_dbg(2, debug, "vpif_g_std\n");
1415
1416 *std = ch->video.stdid;
1417 return 0;
1418}
1419
1420/**
1421 * vpif_s_std() - set STD handler
1422 * @file: file ptr
1423 * @priv: file handle
1424 * @std_id: ptr to std id
1425 */
1426static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
1427{
1428 struct vpif_fh *fh = priv;
1429 struct channel_obj *ch = fh->channel;
1430 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1431 int ret = 0;
1432
1433 vpif_dbg(2, debug, "vpif_s_std\n");
1434
1435 if (common->started) {
1436 vpif_err("streaming in progress\n");
1437 return -EBUSY;
1438 }
1439
1440 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1441 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1442 if (!fh->initialized) {
1443 vpif_dbg(1, debug, "Channel Busy\n");
1444 return -EBUSY;
1445 }
1446 }
1447
ffb4877b 1448 ret = v4l2_prio_check(&ch->prio, fh->prio);
6ffefff5
MK		 1449 if (0 != ret)
1450 return ret;
1451
1452 fh->initialized = 1;
1453
1454 /* Call encoder subdevice function to set the standard */
1455 if (mutex_lock_interruptible(&common->lock))
1456 return -ERESTARTSYS;
1457
1458 ch->video.stdid = *std_id;
1459
1460 /* Get the information about the standard */
1461 if (vpif_update_std_info(ch)) {
1462 ret = -EINVAL;
1463 vpif_err("Error getting the standard info\n");
1464 goto s_std_exit;
1465 }
1466
1467 /* Configure the default format information */
1468 vpif_config_format(ch);
1469
1470 /* set standard in the sub device */
1471 ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1472 s_std, *std_id);
1473 if (ret < 0)
1474 vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
1475
1476s_std_exit:
1477 mutex_unlock(&common->lock);
1478 return ret;
1479}
1480
1481/**
1482 * vpif_enum_input() - ENUMINPUT handler
1483 * @file: file ptr
1484 * @priv: file handle
1485 * @input: ptr to input structure
1486 */
1487static int vpif_enum_input(struct file *file, void *priv,
1488 struct v4l2_input *input)
1489{
1490
1491 struct vpif_capture_config *config = vpif_dev->platform_data;
1492 struct vpif_capture_chan_config *chan_cfg;
1493 struct vpif_fh *fh = priv;
1494 struct channel_obj *ch = fh->channel;
1495
1496 chan_cfg = &config->chan_config[ch->channel_id];
1497
1498 if (input->index >= chan_cfg->input_count) {
1499 vpif_dbg(1, debug, "Invalid input index\n");
1500 return -EINVAL;
1501 }
1502
1503 memcpy(input, &chan_cfg->inputs[input->index].input,
1504 sizeof(*input));
1505 return 0;
1506}
1507
1508/**
1509 * vpif_g_input() - Get INPUT handler
1510 * @file: file ptr
1511 * @priv: file handle
1512 * @index: ptr to input index
1513 */
1514static int vpif_g_input(struct file *file, void *priv, unsigned int *index)
1515{
1516 struct vpif_fh *fh = priv;
1517 struct channel_obj *ch = fh->channel;
1518 struct video_obj *vid_ch = &ch->video;
1519
1520 *index = vid_ch->input_idx;
1521
1522 return 0;
1523}
1524
1525/**
1526 * vpif_s_input() - Set INPUT handler
1527 * @file: file ptr
1528 * @priv: file handle
1529 * @index: input index
1530 */
1531static int vpif_s_input(struct file *file, void *priv, unsigned int index)
1532{
1533 struct vpif_capture_config *config = vpif_dev->platform_data;
1534 struct vpif_capture_chan_config *chan_cfg;
1535 struct vpif_fh *fh = priv;
1536 struct channel_obj *ch = fh->channel;
1537 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1538 struct video_obj *vid_ch = &ch->video;
1539 struct vpif_subdev_info *subdev_info;
1540 int ret = 0, sd_index = 0;
1541 u32 input = 0, output = 0;
1542
1543 chan_cfg = &config->chan_config[ch->channel_id];
1544
1545 if (common->started) {
1546 vpif_err("Streaming in progress\n");
1547 return -EBUSY;
1548 }
1549
1550 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1551 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1552 if (!fh->initialized) {
1553 vpif_dbg(1, debug, "Channel Busy\n");
1554 return -EBUSY;
1555 }
1556 }
1557
ffb4877b 1558 ret = v4l2_prio_check(&ch->prio, fh->prio);
6ffefff5
MK		 1559 if (0 != ret)
1560 return ret;
1561
1562 fh->initialized = 1;
1563 subdev_info = vpif_map_sub_device_to_input(ch, config, index,
1564 &sd_index);
1565 if (NULL == subdev_info) {
1566 vpif_dbg(1, debug,
1567 "couldn't lookup sub device for the input index\n");
1568 return -EINVAL;
1569 }
1570
1571 if (mutex_lock_interruptible(&common->lock))
1572 return -ERESTARTSYS;
1573
1574 /* first setup input path from sub device to vpif */
1575 if (config->setup_input_path) {
1576 ret = config->setup_input_path(ch->channel_id,
1577 subdev_info->name);
1578 if (ret < 0) {
1579 vpif_dbg(1, debug, "couldn't setup input path for the"
1580 " sub device %s, for input index %d\n",
1581 subdev_info->name, index);
1582 goto exit;
1583 }
1584 }
1585
1586 if (subdev_info->can_route) {
1587 input = subdev_info->input;
1588 output = subdev_info->output;
1589 ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing,
1590 input, output, 0);
1591 if (ret < 0) {
1592 vpif_dbg(1, debug, "Failed to set input\n");
1593 goto exit;
1594 }
1595 }
1596 vid_ch->input_idx = index;
1597 ch->curr_subdev_info = subdev_info;
1598 ch->curr_sd_index = sd_index;
1599 /* copy interface parameters to vpif */
1600 ch->vpifparams.iface = subdev_info->vpif_if;
1601
1602 /* update tvnorms from the sub device input info */
1603 ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
1604
1605exit:
1606 mutex_unlock(&common->lock);
1607 return ret;
1608}
1609
1610/**
1611 * vpif_enum_fmt_vid_cap() - ENUM_FMT handler
1612 * @file: file ptr
1613 * @priv: file handle
1614 * @index: input index
1615 */
1616static int vpif_enum_fmt_vid_cap(struct file *file, void *priv,
1617 struct v4l2_fmtdesc *fmt)
1618{
1619 struct vpif_fh *fh = priv;
1620 struct channel_obj *ch = fh->channel;
1621
1622 if (fmt->index != 0) {
1623 vpif_dbg(1, debug, "Invalid format index\n");
1624 return -EINVAL;
1625 }
1626
1627 /* Fill in the information about format */
1628 if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) {
1629 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1630 strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb");
1631 fmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
1632 } else {
1633 fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1634 strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
1635 fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
1636 }
1637 return 0;
1638}
1639
1640/**
1641 * vpif_try_fmt_vid_cap() - TRY_FMT handler
1642 * @file: file ptr
1643 * @priv: file handle
1644 * @fmt: ptr to v4l2 format structure
1645 */
1646static int vpif_try_fmt_vid_cap(struct file *file, void *priv,
1647 struct v4l2_format *fmt)
1648{
1649 struct vpif_fh *fh = priv;
1650 struct channel_obj *ch = fh->channel;
1651 struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
1652
1653 return vpif_check_format(ch, pixfmt, 1);
1654}
1655
1656
1657/**
1658 * vpif_g_fmt_vid_cap() - Set INPUT handler
1659 * @file: file ptr
1660 * @priv: file handle
1661 * @fmt: ptr to v4l2 format structure
1662 */
1663static int vpif_g_fmt_vid_cap(struct file *file, void *priv,
1664 struct v4l2_format *fmt)
1665{
1666 struct vpif_fh *fh = priv;
1667 struct channel_obj *ch = fh->channel;
1668 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1669
1670 /* Check the validity of the buffer type */
1671 if (common->fmt.type != fmt->type)
1672 return -EINVAL;
1673
1674 /* Fill in the information about format */
1675 if (mutex_lock_interruptible(&common->lock))
1676 return -ERESTARTSYS;
1677
1678 *fmt = common->fmt;
1679 mutex_unlock(&common->lock);
1680 return 0;
1681}
1682
1683/**
1684 * vpif_s_fmt_vid_cap() - Set FMT handler
1685 * @file: file ptr
1686 * @priv: file handle
1687 * @fmt: ptr to v4l2 format structure
1688 */
1689static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
1690 struct v4l2_format *fmt)
1691{
1692 struct vpif_fh *fh = priv;
1693 struct channel_obj *ch = fh->channel;
1694 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1695 struct v4l2_pix_format *pixfmt;
1696 int ret = 0;
1697
1698 vpif_dbg(2, debug, "VIDIOC_S_FMT\n");
1699
1700 /* If streaming is started, return error */
1701 if (common->started) {
1702 vpif_dbg(1, debug, "Streaming is started\n");
1703 return -EBUSY;
1704 }
1705
1706 if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) ||
1707 (VPIF_CHANNEL1_VIDEO == ch->channel_id)) {
1708 if (!fh->initialized) {
1709 vpif_dbg(1, debug, "Channel Busy\n");
1710 return -EBUSY;
1711 }
1712 }
1713
ffb4877b 1714 ret = v4l2_prio_check(&ch->prio, fh->prio);
6ffefff5
MK		 1715 if (0 != ret)
1716 return ret;
1717
1718 fh->initialized = 1;
1719
1720 pixfmt = &fmt->fmt.pix;
1721 /* Check for valid field format */
1722 ret = vpif_check_format(ch, pixfmt, 0);
1723
1724 if (ret)
1725 return ret;
1726 /* store the format in the channel object */
1727 if (mutex_lock_interruptible(&common->lock))
1728 return -ERESTARTSYS;
1729
1730 common->fmt = *fmt;
1731 mutex_unlock(&common->lock);
1732
1733 return 0;
1734}
1735
1736/**
1737 * vpif_querycap() - QUERYCAP handler
1738 * @file: file ptr
1739 * @priv: file handle
1740 * @cap: ptr to v4l2_capability structure
1741 */
1742static int vpif_querycap(struct file *file, void *priv,
1743 struct v4l2_capability *cap)
1744{
1745 struct vpif_capture_config *config = vpif_dev->platform_data;
1746
1747 cap->version = VPIF_CAPTURE_VERSION_CODE;
1748 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1749 strlcpy(cap->driver, "vpif capture", sizeof(cap->driver));
1750 strlcpy(cap->bus_info, "DM646x Platform", sizeof(cap->bus_info));
1751 strlcpy(cap->card, config->card_name, sizeof(cap->card));
1752
1753 return 0;
1754}
1755
1756/**
1757 * vpif_g_priority() - get priority handler
1758 * @file: file ptr
1759 * @priv: file handle
1760 * @prio: ptr to v4l2_priority structure
1761 */
1762static int vpif_g_priority(struct file *file, void *priv,
1763 enum v4l2_priority *prio)
1764{
1765 struct vpif_fh *fh = priv;
1766 struct channel_obj *ch = fh->channel;
1767
1768 *prio = v4l2_prio_max(&ch->prio);
1769
1770 return 0;
1771}
1772
1773/**
1774 * vpif_s_priority() - set priority handler
1775 * @file: file ptr
1776 * @priv: file handle
1777 * @prio: ptr to v4l2_priority structure
1778 */
1779static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1780{
1781 struct vpif_fh *fh = priv;
1782 struct channel_obj *ch = fh->channel;
1783
1784 return v4l2_prio_change(&ch->prio, &fh->prio, p);
1785}
1786
1787/**
1788 * vpif_cropcap() - cropcap handler
1789 * @file: file ptr
1790 * @priv: file handle
1791 * @crop: ptr to v4l2_cropcap structure
1792 */
1793static int vpif_cropcap(struct file *file, void *priv,
1794 struct v4l2_cropcap *crop)
1795{
1796 struct vpif_fh *fh = priv;
1797 struct channel_obj *ch = fh->channel;
1798 struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1799
1800 if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type)
1801 return -EINVAL;
1802
1803 crop->bounds.left = 0;
1804 crop->bounds.top = 0;
1805 crop->bounds.height = common->height;
1806 crop->bounds.width = common->width;
1807 crop->defrect = crop->bounds;
1808 return 0;
1809}
1810
7036d6a7
MR		 1811/*
1812 * vpif_g_chip_ident() - Identify the chip
1813 * @file: file ptr
1814 * @priv: file handle
1815 * @chip: chip identity
1816 *
1817 * Returns zero or -EINVAL if read operations fails.
1818 */
1819static int vpif_g_chip_ident(struct file *file, void *priv,
1820 struct v4l2_dbg_chip_ident *chip)
1821{
1822 chip->ident = V4L2_IDENT_NONE;
1823 chip->revision = 0;
1824 if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1825 chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1826 vpif_dbg(2, debug, "match_type is invalid.\n");
1827 return -EINVAL;
1828 }
1829
1830 return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1831 g_chip_ident, chip);
1832}
1833
1834#ifdef CONFIG_VIDEO_ADV_DEBUG
1835/*
1836 * vpif_dbg_g_register() - Read register
1837 * @file: file ptr
1838 * @priv: file handle
1839 * @reg: register to be read
1840 *
1841 * Debugging only
1842 * Returns zero or -EINVAL if read operations fails.
1843 */
1844static int vpif_dbg_g_register(struct file *file, void *priv,
1845 struct v4l2_dbg_register *reg){
1846 struct vpif_fh *fh = priv;
1847 struct channel_obj *ch = fh->channel;
1848
1849 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1850 g_register, reg);
1851}
1852
1853/*
1854 * vpif_dbg_s_register() - Write to register
1855 * @file: file ptr
1856 * @priv: file handle
1857 * @reg: register to be modified
1858 *
1859 * Debugging only
1860 * Returns zero or -EINVAL if write operations fails.
1861 */
1862static int vpif_dbg_s_register(struct file *file, void *priv,
1863 struct v4l2_dbg_register *reg){
1864 struct vpif_fh *fh = priv;
1865 struct channel_obj *ch = fh->channel;
1866
1867 return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], core,
1868 s_register, reg);
1869}
1870#endif
1871
1872/*
1873 * vpif_log_status() - Status information
1874 * @file: file ptr
1875 * @priv: file handle
1876 *
1877 * Returns zero.
1878 */
1879static int vpif_log_status(struct file *filep, void *priv)
1880{
1881 /* status for sub devices */
1882 v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1883
1884 return 0;
1885}
1886
6ffefff5
MK		 1887/* vpif capture ioctl operations */
1888static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1889 .vidioc_querycap = vpif_querycap,
1890 .vidioc_g_priority = vpif_g_priority,
1891 .vidioc_s_priority = vpif_s_priority,
1892 .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap,
1893 .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap,
1894 .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap,
1895 .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap,
1896 .vidioc_enum_input = vpif_enum_input,
1897 .vidioc_s_input = vpif_s_input,
1898 .vidioc_g_input = vpif_g_input,
1899 .vidioc_reqbufs = vpif_reqbufs,
1900 .vidioc_querybuf = vpif_querybuf,
1901 .vidioc_querystd = vpif_querystd,
1902 .vidioc_s_std = vpif_s_std,
1903 .vidioc_g_std = vpif_g_std,
1904 .vidioc_qbuf = vpif_qbuf,
1905 .vidioc_dqbuf = vpif_dqbuf,
1906 .vidioc_streamon = vpif_streamon,
1907 .vidioc_streamoff = vpif_streamoff,
1908 .vidioc_cropcap = vpif_cropcap,
7036d6a7
MR		 1909 .vidioc_g_chip_ident = vpif_g_chip_ident,
1910#ifdef CONFIG_VIDEO_ADV_DEBUG
1911 .vidioc_g_register = vpif_dbg_g_register,
1912 .vidioc_s_register = vpif_dbg_s_register,
1913#endif
1914 .vidioc_log_status = vpif_log_status,
6ffefff5
MK		 1915};
1916
1917/* vpif file operations */
1918static struct v4l2_file_operations vpif_fops = {
1919 .owner = THIS_MODULE,
1920 .open = vpif_open,
1921 .release = vpif_release,
1922 .ioctl = video_ioctl2,
1923 .mmap = vpif_mmap,
1924 .poll = vpif_poll
1925};
1926
1927/* vpif video template */
1928static struct video_device vpif_video_template = {
1929 .name = "vpif",
1930 .fops = &vpif_fops,
1931 .minor = -1,
1932 .ioctl_ops = &vpif_ioctl_ops,
1933};
1934
1935/**
1936 * initialize_vpif() - Initialize vpif data structures
1937 *
1938 * Allocate memory for data structures and initialize them
1939 */
1940static int initialize_vpif(void)
1941{
1942 int err = 0, i, j;
1943 int free_channel_objects_index;
1944
1945 /* Default number of buffers should be 3 */
1946 if ((ch0_numbuffers > 0) &&
1947 (ch0_numbuffers < config_params.min_numbuffers))
1948 ch0_numbuffers = config_params.min_numbuffers;
1949 if ((ch1_numbuffers > 0) &&
1950 (ch1_numbuffers < config_params.min_numbuffers))
1951 ch1_numbuffers = config_params.min_numbuffers;
1952
1953 /* Set buffer size to min buffers size if it is invalid */
1954 if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO])
1955 ch0_bufsize =
1956 config_params.min_bufsize[VPIF_CHANNEL0_VIDEO];
1957 if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO])
1958 ch1_bufsize =
1959 config_params.min_bufsize[VPIF_CHANNEL1_VIDEO];
1960
1961 config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers;
1962 config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers;
1963 if (ch0_numbuffers) {
1964 config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO]
1965 = ch0_bufsize;
1966 }
1967 if (ch1_numbuffers) {
1968 config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO]
1969 = ch1_bufsize;
1970 }
1971
1972 /* Allocate memory for six channel objects */
1973 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
1974 vpif_obj.dev[i] =
1975 kzalloc(sizeof(*vpif_obj.dev[i]), GFP_KERNEL);
1976 /* If memory allocation fails, return error */
1977 if (!vpif_obj.dev[i]) {
1978 free_channel_objects_index = i;
1979 err = -ENOMEM;
1980 goto vpif_init_free_channel_objects;
1981 }
1982 }
1983 return 0;
1984
1985vpif_init_free_channel_objects:
1986 for (j = 0; j < free_channel_objects_index; j++)
1987 kfree(vpif_obj.dev[j]);
1988 return err;
1989}
1990
1991/**
1992 * vpif_probe : This function probes the vpif capture driver
1993 * @pdev: platform device pointer
1994 *
1995 * This creates device entries by register itself to the V4L2 driver and
1996 * initializes fields of each channel objects
1997 */
1998static __init int vpif_probe(struct platform_device *pdev)
1999{
2000 struct vpif_subdev_info *subdevdata;
2001 struct vpif_capture_config *config;
2002 int i, j, k, m, q, err;
2003 struct i2c_adapter *i2c_adap;
2004 struct channel_obj *ch;
2005 struct common_obj *common;
2006 struct video_device *vfd;
2007 struct resource *res;
2008 int subdev_count;
2009
2010 vpif_dev = &pdev->dev;
2011
2012 err = initialize_vpif();
2013 if (err) {
2014 v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
2015 return err;
2016 }
2017
2018 k = 0;
2019 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
2020 for (i = res->start; i <= res->end; i++) {
2021 if (request_irq(i, vpif_channel_isr, IRQF_DISABLED,
2022 "DM646x_Capture",
2023 (void *)(&vpif_obj.dev[k]->channel_id))) {
2024 err = -EBUSY;
2025 i--;
2026 goto vpif_int_err;
2027 }
2028 }
2029 k++;
2030 }
2031
2032 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2033 /* Get the pointer to the channel object */
2034 ch = vpif_obj.dev[i];
2035 /* Allocate memory for video device */
2036 vfd = video_device_alloc();
2037 if (NULL == vfd) {
2038 for (j = 0; j < i; j++) {
2039 ch = vpif_obj.dev[j];
2040 video_device_release(ch->video_dev);
2041 }
2042 err = -ENOMEM;
2043 goto vpif_dev_alloc_err;
2044 }
2045
2046 /* Initialize field of video device */
2047 *vfd = vpif_video_template;
2048 vfd->v4l2_dev = &vpif_obj.v4l2_dev;
2049 vfd->release = video_device_release;
2050 snprintf(vfd->name, sizeof(vfd->name),
2051 "DM646x_VPIFCapture_DRIVER_V%d.%d.%d",
2052 (VPIF_CAPTURE_VERSION_CODE >> 16) & 0xff,
2053 (VPIF_CAPTURE_VERSION_CODE >> 8) & 0xff,
2054 (VPIF_CAPTURE_VERSION_CODE) & 0xff);
2055 /* Set video_dev to the video device */
2056 ch->video_dev = vfd;
2057 }
2058
2059 for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
2060 ch = vpif_obj.dev[j];
2061 ch->channel_id = j;
2062 common = &(ch->common[VPIF_VIDEO_INDEX]);
2063 spin_lock_init(&common->irqlock);
2064 mutex_init(&common->lock);
2065 /* Initialize prio member of channel object */
2066 v4l2_prio_init(&ch->prio);
2067 err = video_register_device(ch->video_dev,
2068 VFL_TYPE_GRABBER, (j ? 1 : 0));
2069 if (err)
2070 goto probe_out;
2071
2072 video_set_drvdata(ch->video_dev, ch);
2073
2074 }
2075
2076 i2c_adap = i2c_get_adapter(1);
2077 config = pdev->dev.platform_data;
2078
2079 subdev_count = config->subdev_count;
1f8766b4 2080 vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
6ffefff5
MK		 2081 GFP_KERNEL);
2082 if (vpif_obj.sd == NULL) {
2083 vpif_err("unable to allocate memory for subdevice pointers\n");
2084 err = -ENOMEM;
2085 goto probe_out;
2086 }
2087
2088 err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
2089 if (err) {
2090 v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
2091 goto probe_subdev_out;
2092 }
2093
2094 for (i = 0; i < subdev_count; i++) {
2095 subdevdata = &config->subdev_info[i];
2096 vpif_obj.sd[i] =
2097 v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
2098 i2c_adap,
6ffefff5
MK		 2099 &subdevdata->board_info,
2100 NULL);
2101
2102 if (!vpif_obj.sd[i]) {
2103 vpif_err("Error registering v4l2 subdevice\n");
2104 goto probe_subdev_out;
2105 }
2106 v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n",
2107 subdevdata->name);
2108
2109 if (vpif_obj.sd[i])
2110 vpif_obj.sd[i]->grp_id = 1 << i;
2111 }
2112 v4l2_info(&vpif_obj.v4l2_dev, "DM646x VPIF Capture driver"
2113 " initialized\n");
2114
2115 return 0;
2116
2117probe_subdev_out:
2118 /* free sub devices memory */
2119 kfree(vpif_obj.sd);
2120
2121 j = VPIF_CAPTURE_MAX_DEVICES;
2122probe_out:
2123 v4l2_device_unregister(&vpif_obj.v4l2_dev);
2124 for (k = 0; k < j; k++) {
2125 /* Get the pointer to the channel object */
2126 ch = vpif_obj.dev[k];
2127 /* Unregister video device */
2128 video_unregister_device(ch->video_dev);
2129 }
2130
2131vpif_dev_alloc_err:
2132 k = VPIF_CAPTURE_MAX_DEVICES-1;
2133 res = platform_get_resource(pdev, IORESOURCE_IRQ, k);
2134 i = res->end;
2135
2136vpif_int_err:
2137 for (q = k; q >= 0; q--) {
2138 for (m = i; m >= (int)res->start; m--)
2139 free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id));
2140
2141 res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1);
2142 if (res)
2143 i = res->end;
2144 }
2145 return err;
2146}
2147
2148/**
2149 * vpif_remove() - driver remove handler
2150 * @device: ptr to platform device structure
2151 *
2152 * The vidoe device is unregistered
2153 */
2154static int vpif_remove(struct platform_device *device)
2155{
2156 int i;
2157 struct channel_obj *ch;
2158
2159 v4l2_device_unregister(&vpif_obj.v4l2_dev);
2160
2161 /* un-register device */
2162 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
2163 /* Get the pointer to the channel object */
2164 ch = vpif_obj.dev[i];
2165 /* Unregister video device */
2166 video_unregister_device(ch->video_dev);
2167 }
2168 return 0;
2169}
2170
2171/**
2172 * vpif_suspend: vpif device suspend
2173 *
2174 * TODO: Add suspend code here
2175 */
2176static int
2177vpif_suspend(struct device *dev)
2178{
2179 return -1;
2180}
2181
2182/**
2183 * vpif_resume: vpif device suspend
2184 *
2185 * TODO: Add resume code here
2186 */
2187static int
2188vpif_resume(struct device *dev)
2189{
2190 return -1;
2191}
2192
47145210 2193static const struct dev_pm_ops vpif_dev_pm_ops = {
6ffefff5
MK		 2194 .suspend = vpif_suspend,
2195 .resume = vpif_resume,
2196};
2197
ffa1b391 2198static __refdata struct platform_driver vpif_driver = {
6ffefff5
MK		 2199 .driver = {
2200 .name = "vpif_capture",
2201 .owner = THIS_MODULE,
2202 .pm = &vpif_dev_pm_ops,
2203 },
2204 .probe = vpif_probe,
2205 .remove = vpif_remove,
2206};
2207
2208/**
2209 * vpif_init: initialize the vpif driver
2210 *
2211 * This function registers device and driver to the kernel, requests irq
2212 * handler and allocates memory
2213 * for channel objects
2214 */
2215static __init int vpif_init(void)
2216{
2217 return platform_driver_register(&vpif_driver);
2218}
2219
2220/**
2221 * vpif_cleanup : This function clean up the vpif capture resources
2222 *
2223 * This will un-registers device and driver to the kernel, frees
2224 * requested irq handler and de-allocates memory allocated for channel
2225 * objects.
2226 */
2227static void vpif_cleanup(void)
2228{
2229 struct platform_device *pdev;
2230 struct resource *res;
2231 int irq_num;
2232 int i = 0;
2233
2234 pdev = container_of(vpif_dev, struct platform_device, dev);
2235 while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
2236 for (irq_num = res->start; irq_num <= res->end; irq_num++)
2237 free_irq(irq_num,
2238 (void *)(&vpif_obj.dev[i]->channel_id));
2239 i++;
2240 }
2241
2242 platform_driver_unregister(&vpif_driver);
2243
2244 kfree(vpif_obj.sd);
2245 for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
2246 kfree(vpif_obj.dev[i]);
2247}
2248
2249/* Function for module initialization and cleanup */
2250module_init(vpif_init);
2251module_exit(vpif_cleanup);
Ubuntu Jammy Linux kernel mirror