2
* vpif-display - VPIF display driver
3
* Display driver for TI DaVinci VPIF
5
* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
7
* This program is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU General Public License as
9
* published by the Free Software Foundation version 2.
11
* This program is distributed .as is. WITHOUT ANY WARRANTY of any
12
* kind, whether express or implied; without even the implied warranty
13
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14
* GNU General Public License for more details.
17
#include <linux/kernel.h>
18
#include <linux/init.h>
19
#include <linux/module.h>
20
#include <linux/errno.h>
23
#include <linux/interrupt.h>
24
#include <linux/workqueue.h>
25
#include <linux/string.h>
26
#include <linux/videodev2.h>
27
#include <linux/wait.h>
28
#include <linux/time.h>
29
#include <linux/i2c.h>
30
#include <linux/platform_device.h>
32
#include <linux/slab.h>
37
#include <media/adv7343.h>
38
#include <media/v4l2-device.h>
39
#include <media/v4l2-ioctl.h>
40
#include <media/v4l2-chip-ident.h>
42
#include <mach/dm646x.h>
44
#include "vpif_display.h"
47
MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
48
MODULE_LICENSE("GPL");
49
MODULE_VERSION(VPIF_DISPLAY_VERSION);
51
#define DM646X_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
53
#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
54
#define vpif_dbg(level, debug, fmt, arg...) \
55
v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
58
static u32 ch2_numbuffers = 3;
59
static u32 ch3_numbuffers = 3;
60
static u32 ch2_bufsize = 1920 * 1080 * 2;
61
static u32 ch3_bufsize = 720 * 576 * 2;
63
module_param(debug, int, 0644);
64
module_param(ch2_numbuffers, uint, S_IRUGO);
65
module_param(ch3_numbuffers, uint, S_IRUGO);
66
module_param(ch2_bufsize, uint, S_IRUGO);
67
module_param(ch3_bufsize, uint, S_IRUGO);
69
MODULE_PARM_DESC(debug, "Debug level 0-1");
70
MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)");
71
MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)");
72
MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)");
73
MODULE_PARM_DESC(ch3_bufsize, "Channel3 buffer size (default:720 x 576 x 2)");
75
static struct vpif_config_params config_params = {
79
.min_bufsize[0] = 720 * 480 * 2,
80
.min_bufsize[1] = 720 * 480 * 2,
81
.channel_bufsize[0] = 1920 * 1080 * 2,
82
.channel_bufsize[1] = 720 * 576 * 2,
85
static struct vpif_device vpif_obj = { {NULL} };
86
static struct device *vpif_dev;
89
* vpif_uservirt_to_phys: This function is used to convert user
90
* space virtual address to physical address.
92
static u32 vpif_uservirt_to_phys(u32 virtp)
94
struct mm_struct *mm = current->mm;
95
unsigned long physp = 0;
96
struct vm_area_struct *vma;
98
vma = find_vma(mm, virtp);
100
/* For kernel direct-mapped memory, take the easy way */
101
if (virtp >= PAGE_OFFSET) {
102
physp = virt_to_phys((void *)virtp);
103
} else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) {
104
/* this will catch, kernel-allocated, mmaped-to-usermode addr */
105
physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
107
/* otherwise, use get_user_pages() for general userland pages */
108
int res, nr_pages = 1;
110
down_read(¤t->mm->mmap_sem);
112
res = get_user_pages(current, current->mm,
113
virtp, nr_pages, 1, 0, &pages, NULL);
114
up_read(¤t->mm->mmap_sem);
116
if (res == nr_pages) {
117
physp = __pa(page_address(&pages[0]) +
118
(virtp & ~PAGE_MASK));
120
vpif_err("get_user_pages failed\n");
129
* buffer_prepare: This is the callback function called from videobuf_qbuf()
130
* function the buffer is prepared and user space virtual address is converted
131
* into physical address
133
static int vpif_buffer_prepare(struct videobuf_queue *q,
134
struct videobuf_buffer *vb,
135
enum v4l2_field field)
137
struct vpif_fh *fh = q->priv_data;
138
struct common_obj *common;
141
common = &fh->channel->common[VPIF_VIDEO_INDEX];
142
if (VIDEOBUF_NEEDS_INIT == vb->state) {
143
vb->width = common->width;
144
vb->height = common->height;
145
vb->size = vb->width * vb->height;
148
vb->state = VIDEOBUF_PREPARED;
150
/* if user pointer memory mechanism is used, get the physical
151
* address of the buffer */
152
if (V4L2_MEMORY_USERPTR == common->memory) {
154
vpif_err("buffer_address is 0\n");
158
vb->boff = vpif_uservirt_to_phys(vb->baddr);
159
if (!ISALIGNED(vb->boff))
164
if (q->streaming && (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
165
if (!ISALIGNED(addr + common->ytop_off) ||
166
!ISALIGNED(addr + common->ybtm_off) ||
167
!ISALIGNED(addr + common->ctop_off) ||
168
!ISALIGNED(addr + common->cbtm_off))
174
vpif_err("buffer offset not aligned to 8 bytes\n");
179
* vpif_buffer_setup: This function allocates memory for the buffers
181
static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count,
184
struct vpif_fh *fh = q->priv_data;
185
struct channel_obj *ch = fh->channel;
186
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
188
if (V4L2_MEMORY_MMAP != common->memory)
191
*size = config_params.channel_bufsize[ch->channel_id];
192
if (*count < config_params.min_numbuffers)
193
*count = config_params.min_numbuffers;
199
* vpif_buffer_queue: This function adds the buffer to DMA queue
201
static void vpif_buffer_queue(struct videobuf_queue *q,
202
struct videobuf_buffer *vb)
204
struct vpif_fh *fh = q->priv_data;
205
struct common_obj *common;
207
common = &fh->channel->common[VPIF_VIDEO_INDEX];
209
/* add the buffer to the DMA queue */
210
list_add_tail(&vb->queue, &common->dma_queue);
211
vb->state = VIDEOBUF_QUEUED;
215
* vpif_buffer_release: This function is called from the videobuf layer to
216
* free memory allocated to the buffers
218
static void vpif_buffer_release(struct videobuf_queue *q,
219
struct videobuf_buffer *vb)
221
struct vpif_fh *fh = q->priv_data;
222
struct channel_obj *ch = fh->channel;
223
struct common_obj *common;
224
unsigned int buf_size = 0;
226
common = &ch->common[VPIF_VIDEO_INDEX];
228
videobuf_dma_contig_free(q, vb);
229
vb->state = VIDEOBUF_NEEDS_INIT;
231
if (V4L2_MEMORY_MMAP != common->memory)
234
buf_size = config_params.channel_bufsize[ch->channel_id];
237
static struct videobuf_queue_ops video_qops = {
238
.buf_setup = vpif_buffer_setup,
239
.buf_prepare = vpif_buffer_prepare,
240
.buf_queue = vpif_buffer_queue,
241
.buf_release = vpif_buffer_release,
243
static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
245
static void process_progressive_mode(struct common_obj *common)
247
unsigned long addr = 0;
249
/* Get the next buffer from buffer queue */
250
common->next_frm = list_entry(common->dma_queue.next,
251
struct videobuf_buffer, queue);
252
/* Remove that buffer from the buffer queue */
253
list_del(&common->next_frm->queue);
254
/* Mark status of the buffer as active */
255
common->next_frm->state = VIDEOBUF_ACTIVE;
257
/* Set top and bottom field addrs in VPIF registers */
258
addr = videobuf_to_dma_contig(common->next_frm);
259
common->set_addr(addr + common->ytop_off,
260
addr + common->ybtm_off,
261
addr + common->ctop_off,
262
addr + common->cbtm_off);
265
static void process_interlaced_mode(int fid, struct common_obj *common)
267
/* device field id and local field id are in sync */
268
/* If this is even field */
270
if (common->cur_frm == common->next_frm)
273
/* one frame is displayed If next frame is
274
* available, release cur_frm and move on */
275
/* Copy frame display time */
276
do_gettimeofday(&common->cur_frm->ts);
277
/* Change status of the cur_frm */
278
common->cur_frm->state = VIDEOBUF_DONE;
279
/* unlock semaphore on cur_frm */
280
wake_up_interruptible(&common->cur_frm->done);
281
/* Make cur_frm pointing to next_frm */
282
common->cur_frm = common->next_frm;
284
} else if (1 == fid) { /* odd field */
285
if (list_empty(&common->dma_queue)
286
|| (common->cur_frm != common->next_frm)) {
289
/* one field is displayed configure the next
290
* frame if it is available else hold on current
292
/* Get next from the buffer queue */
293
process_progressive_mode(common);
299
* vpif_channel_isr: It changes status of the displayed buffer, takes next
300
* buffer from the queue and sets its address in VPIF registers
302
static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
304
struct vpif_device *dev = &vpif_obj;
305
struct channel_obj *ch;
306
struct common_obj *common;
307
enum v4l2_field field;
311
channel_id = *(int *)(dev_id);
312
ch = dev->dev[channel_id];
313
field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
314
for (i = 0; i < VPIF_NUMOBJECTS; i++) {
315
common = &ch->common[i];
316
/* If streaming is started in this channel */
317
if (0 == common->started)
320
if (1 == ch->vpifparams.std_info.frm_fmt) {
321
if (list_empty(&common->dma_queue))
324
/* Progressive mode */
325
if (!channel_first_int[i][channel_id]) {
326
/* Mark status of the cur_frm to
327
* done and unlock semaphore on it */
328
do_gettimeofday(&common->cur_frm->ts);
329
common->cur_frm->state = VIDEOBUF_DONE;
330
wake_up_interruptible(&common->cur_frm->done);
331
/* Make cur_frm pointing to next_frm */
332
common->cur_frm = common->next_frm;
335
channel_first_int[i][channel_id] = 0;
336
process_progressive_mode(common);
338
/* Interlaced mode */
339
/* If it is first interrupt, ignore it */
341
if (channel_first_int[i][channel_id]) {
342
channel_first_int[i][channel_id] = 0;
348
/* Get field id from VPIF registers */
349
fid = vpif_channel_getfid(ch->channel_id + 2);
350
/* If fid does not match with stored field id */
351
if (fid != ch->field_id) {
352
/* Make them in sync */
359
process_interlaced_mode(fid, common);
366
static int vpif_update_std_info(struct channel_obj *ch)
368
struct video_obj *vid_ch = &ch->video;
369
struct vpif_params *vpifparams = &ch->vpifparams;
370
struct vpif_channel_config_params *std_info = &vpifparams->std_info;
371
const struct vpif_channel_config_params *config;
375
for (i = 0; i < vpif_ch_params_count; i++) {
376
config = &ch_params[i];
377
if (config->hd_sd == 0) {
378
vpif_dbg(2, debug, "SD format\n");
379
if (config->stdid & vid_ch->stdid) {
380
memcpy(std_info, config, sizeof(*config));
384
vpif_dbg(2, debug, "HD format\n");
385
if (config->dv_preset == vid_ch->dv_preset) {
386
memcpy(std_info, config, sizeof(*config));
392
if (i == vpif_ch_params_count) {
393
vpif_dbg(1, debug, "Format not found\n");
400
static int vpif_update_resolution(struct channel_obj *ch)
402
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
403
struct video_obj *vid_ch = &ch->video;
404
struct vpif_params *vpifparams = &ch->vpifparams;
405
struct vpif_channel_config_params *std_info = &vpifparams->std_info;
407
if (!vid_ch->stdid && !vid_ch->dv_preset && !vid_ch->bt_timings.height)
410
if (vid_ch->stdid || vid_ch->dv_preset) {
411
if (vpif_update_std_info(ch))
415
common->fmt.fmt.pix.width = std_info->width;
416
common->fmt.fmt.pix.height = std_info->height;
417
vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
418
common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
420
/* Set height and width paramateres */
421
common->height = std_info->height;
422
common->width = std_info->width;
428
* vpif_calculate_offsets: This function calculates buffers offset for Y and C
429
* in the top and bottom field
431
static void vpif_calculate_offsets(struct channel_obj *ch)
433
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
434
struct vpif_params *vpifparams = &ch->vpifparams;
435
enum v4l2_field field = common->fmt.fmt.pix.field;
436
struct video_obj *vid_ch = &ch->video;
437
unsigned int hpitch, vpitch, sizeimage;
439
if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
440
if (ch->vpifparams.std_info.frm_fmt)
441
vid_ch->buf_field = V4L2_FIELD_NONE;
443
vid_ch->buf_field = V4L2_FIELD_INTERLACED;
445
vid_ch->buf_field = common->fmt.fmt.pix.field;
448
if (V4L2_MEMORY_USERPTR == common->memory)
449
sizeimage = common->fmt.fmt.pix.sizeimage;
451
sizeimage = config_params.channel_bufsize[ch->channel_id];
453
hpitch = common->fmt.fmt.pix.bytesperline;
454
vpitch = sizeimage / (hpitch * 2);
455
if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
456
(V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
457
common->ytop_off = 0;
458
common->ybtm_off = hpitch;
459
common->ctop_off = sizeimage / 2;
460
common->cbtm_off = sizeimage / 2 + hpitch;
461
} else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
462
common->ytop_off = 0;
463
common->ybtm_off = sizeimage / 4;
464
common->ctop_off = sizeimage / 2;
465
common->cbtm_off = common->ctop_off + sizeimage / 4;
466
} else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
467
common->ybtm_off = 0;
468
common->ytop_off = sizeimage / 4;
469
common->cbtm_off = sizeimage / 2;
470
common->ctop_off = common->cbtm_off + sizeimage / 4;
473
if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
474
(V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
475
vpifparams->video_params.storage_mode = 1;
477
vpifparams->video_params.storage_mode = 0;
480
if (ch->vpifparams.std_info.frm_fmt == 1) {
481
vpifparams->video_params.hpitch =
482
common->fmt.fmt.pix.bytesperline;
484
if ((field == V4L2_FIELD_ANY) ||
485
(field == V4L2_FIELD_INTERLACED))
486
vpifparams->video_params.hpitch =
487
common->fmt.fmt.pix.bytesperline * 2;
489
vpifparams->video_params.hpitch =
490
common->fmt.fmt.pix.bytesperline;
493
ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
496
static void vpif_config_format(struct channel_obj *ch)
498
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
500
common->fmt.fmt.pix.field = V4L2_FIELD_ANY;
501
if (config_params.numbuffers[ch->channel_id] == 0)
502
common->memory = V4L2_MEMORY_USERPTR;
504
common->memory = V4L2_MEMORY_MMAP;
506
common->fmt.fmt.pix.sizeimage =
507
config_params.channel_bufsize[ch->channel_id];
508
common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
509
common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
512
static int vpif_check_format(struct channel_obj *ch,
513
struct v4l2_pix_format *pixfmt)
515
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
516
enum v4l2_field field = pixfmt->field;
517
u32 sizeimage, hpitch, vpitch;
519
if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
520
goto invalid_fmt_exit;
522
if (!(VPIF_VALID_FIELD(field)))
523
goto invalid_fmt_exit;
525
if (pixfmt->bytesperline <= 0)
526
goto invalid_pitch_exit;
528
if (V4L2_MEMORY_USERPTR == common->memory)
529
sizeimage = pixfmt->sizeimage;
531
sizeimage = config_params.channel_bufsize[ch->channel_id];
533
if (vpif_update_resolution(ch))
536
hpitch = pixfmt->bytesperline;
537
vpitch = sizeimage / (hpitch * 2);
539
/* Check for valid value of pitch */
540
if ((hpitch < ch->vpifparams.std_info.width) ||
541
(vpitch < ch->vpifparams.std_info.height))
542
goto invalid_pitch_exit;
544
/* Check for 8 byte alignment */
545
if (!ISALIGNED(hpitch)) {
546
vpif_err("invalid pitch alignment\n");
549
pixfmt->width = common->fmt.fmt.pix.width;
550
pixfmt->height = common->fmt.fmt.pix.height;
555
vpif_err("invalid field format\n");
559
vpif_err("invalid pitch\n");
563
static void vpif_config_addr(struct channel_obj *ch, int muxmode)
565
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
567
if (VPIF_CHANNEL3_VIDEO == ch->channel_id) {
568
common->set_addr = ch3_set_videobuf_addr;
571
common->set_addr = ch2_set_videobuf_addr_yc_nmux;
573
common->set_addr = ch2_set_videobuf_addr;
578
* vpif_mmap: It is used to map kernel space buffers into user spaces
580
static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
582
struct vpif_fh *fh = filep->private_data;
583
struct channel_obj *ch = fh->channel;
584
struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
586
vpif_dbg(2, debug, "vpif_mmap\n");
588
return videobuf_mmap_mapper(&common->buffer_queue, vma);
592
* vpif_poll: It is used for select/poll system call
594
static unsigned int vpif_poll(struct file *filep, poll_table *wait)
596
struct vpif_fh *fh = filep->private_data;
597
struct channel_obj *ch = fh->channel;
598
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
601
return videobuf_poll_stream(filep, &common->buffer_queue, wait);
607
* vpif_open: It creates object of file handle structure and stores it in
608
* private_data member of filepointer
610
static int vpif_open(struct file *filep)
612
struct video_device *vdev = video_devdata(filep);
613
struct channel_obj *ch = NULL;
614
struct vpif_fh *fh = NULL;
616
ch = video_get_drvdata(vdev);
617
/* Allocate memory for the file handle object */
618
fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL);
620
vpif_err("unable to allocate memory for file handle object\n");
624
/* store pointer to fh in private_data member of filep */
625
filep->private_data = fh;
628
if (!ch->initialized) {
631
memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
634
/* Increment channel usrs counter */
635
atomic_inc(&ch->usrs);
636
/* Set io_allowed[VPIF_VIDEO_INDEX] member to false */
637
fh->io_allowed[VPIF_VIDEO_INDEX] = 0;
638
/* Initialize priority of this instance to default priority */
639
fh->prio = V4L2_PRIORITY_UNSET;
640
v4l2_prio_open(&ch->prio, &fh->prio);
646
* vpif_release: This function deletes buffer queue, frees the buffers and
647
* the vpif file handle
649
static int vpif_release(struct file *filep)
651
struct vpif_fh *fh = filep->private_data;
652
struct channel_obj *ch = fh->channel;
653
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
655
/* if this instance is doing IO */
656
if (fh->io_allowed[VPIF_VIDEO_INDEX]) {
657
/* Reset io_usrs member of channel object */
659
/* Disable channel */
660
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
662
channel2_intr_enable(0);
664
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
665
(2 == common->started)) {
667
channel3_intr_enable(0);
670
/* Free buffers allocated */
671
videobuf_queue_cancel(&common->buffer_queue);
672
videobuf_mmap_free(&common->buffer_queue);
674
config_params.numbuffers[ch->channel_id];
677
/* Decrement channel usrs counter */
678
atomic_dec(&ch->usrs);
679
/* If this file handle has initialize encoder device, reset it */
683
/* Close the priority */
684
v4l2_prio_close(&ch->prio, fh->prio);
685
filep->private_data = NULL;
692
/* functions implementing ioctls */
694
* vpif_querycap() - QUERYCAP handler
697
* @cap: ptr to v4l2_capability structure
699
static int vpif_querycap(struct file *file, void *priv,
700
struct v4l2_capability *cap)
702
struct vpif_display_config *config = vpif_dev->platform_data;
704
cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
705
strlcpy(cap->driver, "vpif display", sizeof(cap->driver));
706
strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info));
707
strlcpy(cap->card, config->card_name, sizeof(cap->card));
712
static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
713
struct v4l2_fmtdesc *fmt)
715
if (fmt->index != 0) {
716
vpif_err("Invalid format index\n");
720
/* Fill in the information about format */
721
fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
722
strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
723
fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
728
static int vpif_g_fmt_vid_out(struct file *file, void *priv,
729
struct v4l2_format *fmt)
731
struct vpif_fh *fh = priv;
732
struct channel_obj *ch = fh->channel;
733
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
735
/* Check the validity of the buffer type */
736
if (common->fmt.type != fmt->type)
739
if (vpif_update_resolution(ch))
745
static int vpif_s_fmt_vid_out(struct file *file, void *priv,
746
struct v4l2_format *fmt)
748
struct vpif_fh *fh = priv;
749
struct v4l2_pix_format *pixfmt;
750
struct channel_obj *ch = fh->channel;
751
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
754
if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
755
|| (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
756
if (!fh->initialized) {
757
vpif_dbg(1, debug, "Channel Busy\n");
761
/* Check for the priority */
762
ret = v4l2_prio_check(&ch->prio, fh->prio);
768
if (common->started) {
769
vpif_dbg(1, debug, "Streaming in progress\n");
773
pixfmt = &fmt->fmt.pix;
774
/* Check for valid field format */
775
ret = vpif_check_format(ch, pixfmt);
779
/* store the pix format in the channel object */
780
common->fmt.fmt.pix = *pixfmt;
781
/* store the format in the channel object */
786
static int vpif_try_fmt_vid_out(struct file *file, void *priv,
787
struct v4l2_format *fmt)
789
struct vpif_fh *fh = priv;
790
struct channel_obj *ch = fh->channel;
791
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
792
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
795
ret = vpif_check_format(ch, pixfmt);
797
*pixfmt = common->fmt.fmt.pix;
798
pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2;
804
static int vpif_reqbufs(struct file *file, void *priv,
805
struct v4l2_requestbuffers *reqbuf)
807
struct vpif_fh *fh = priv;
808
struct channel_obj *ch = fh->channel;
809
struct common_obj *common;
810
enum v4l2_field field;
813
/* This file handle has not initialized the channel,
814
It is not allowed to do settings */
815
if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
816
|| (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
817
if (!fh->initialized) {
818
vpif_err("Channel Busy\n");
823
if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)
826
index = VPIF_VIDEO_INDEX;
828
common = &ch->common[index];
830
if (common->fmt.type != reqbuf->type)
833
if (0 != common->io_usrs)
836
if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
837
if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY)
838
field = V4L2_FIELD_INTERLACED;
840
field = common->fmt.fmt.pix.field;
842
field = V4L2_VBI_INTERLACED;
845
/* Initialize videobuf queue as per the buffer type */
846
videobuf_queue_dma_contig_init(&common->buffer_queue,
850
sizeof(struct videobuf_buffer), fh,
853
/* Set io allowed member of file handle to TRUE */
854
fh->io_allowed[index] = 1;
855
/* Increment io usrs member of channel object to 1 */
857
/* Store type of memory requested in channel object */
858
common->memory = reqbuf->memory;
859
INIT_LIST_HEAD(&common->dma_queue);
861
/* Allocate buffers */
862
return videobuf_reqbufs(&common->buffer_queue, reqbuf);
865
static int vpif_querybuf(struct file *file, void *priv,
866
struct v4l2_buffer *tbuf)
868
struct vpif_fh *fh = priv;
869
struct channel_obj *ch = fh->channel;
870
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
872
if (common->fmt.type != tbuf->type)
875
return videobuf_querybuf(&common->buffer_queue, tbuf);
878
static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
881
struct vpif_fh *fh = priv;
882
struct channel_obj *ch = fh->channel;
883
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
884
struct v4l2_buffer tbuf = *buf;
885
struct videobuf_buffer *buf1;
886
unsigned long addr = 0;
890
if (common->fmt.type != tbuf.type)
893
if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
894
vpif_err("fh->io_allowed\n");
898
if (!(list_empty(&common->dma_queue)) ||
899
(common->cur_frm != common->next_frm) ||
900
!(common->started) ||
901
(common->started && (0 == ch->field_id)))
902
return videobuf_qbuf(&common->buffer_queue, buf);
904
/* bufferqueue is empty store buffer address in VPIF registers */
905
mutex_lock(&common->buffer_queue.vb_lock);
906
buf1 = common->buffer_queue.bufs[tbuf.index];
907
if (buf1->memory != tbuf.memory) {
908
vpif_err("invalid buffer type\n");
912
if ((buf1->state == VIDEOBUF_QUEUED) ||
913
(buf1->state == VIDEOBUF_ACTIVE)) {
914
vpif_err("invalid state\n");
918
switch (buf1->memory) {
919
case V4L2_MEMORY_MMAP:
920
if (buf1->baddr == 0)
924
case V4L2_MEMORY_USERPTR:
925
if (tbuf.length < buf1->bsize)
928
if ((VIDEOBUF_NEEDS_INIT != buf1->state)
929
&& (buf1->baddr != tbuf.m.userptr)) {
930
vpif_buffer_release(&common->buffer_queue, buf1);
931
buf1->baddr = tbuf.m.userptr;
939
local_irq_save(flags);
940
ret = vpif_buffer_prepare(&common->buffer_queue, buf1,
941
common->buffer_queue.field);
943
local_irq_restore(flags);
947
buf1->state = VIDEOBUF_ACTIVE;
949
common->next_frm = buf1;
950
if (tbuf.type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
951
common->set_addr((addr + common->ytop_off),
952
(addr + common->ybtm_off),
953
(addr + common->ctop_off),
954
(addr + common->cbtm_off));
957
local_irq_restore(flags);
958
list_add_tail(&buf1->stream, &common->buffer_queue.stream);
959
mutex_unlock(&common->buffer_queue.vb_lock);
963
mutex_unlock(&common->buffer_queue.vb_lock);
967
static int vpif_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
969
struct vpif_fh *fh = priv;
970
struct channel_obj *ch = fh->channel;
971
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
974
if (!(*std_id & DM646X_V4L2_STD))
977
if (common->started) {
978
vpif_err("streaming in progress\n");
982
/* Call encoder subdevice function to set the standard */
983
ch->video.stdid = *std_id;
984
ch->video.dv_preset = V4L2_DV_INVALID;
985
memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
987
/* Get the information about the standard */
988
if (vpif_update_resolution(ch))
991
if ((ch->vpifparams.std_info.width *
992
ch->vpifparams.std_info.height * 2) >
993
config_params.channel_bufsize[ch->channel_id]) {
994
vpif_err("invalid std for this size\n");
998
common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
999
/* Configure the default format information */
1000
vpif_config_format(ch);
1002
ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1003
s_std_output, *std_id);
1005
vpif_err("Failed to set output standard\n");
1009
ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core,
1012
vpif_err("Failed to set standard for sub devices\n");
1016
static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
1018
struct vpif_fh *fh = priv;
1019
struct channel_obj *ch = fh->channel;
1021
*std = ch->video.stdid;
1025
static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1027
struct vpif_fh *fh = priv;
1028
struct channel_obj *ch = fh->channel;
1029
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1031
return videobuf_dqbuf(&common->buffer_queue, p,
1032
(file->f_flags & O_NONBLOCK));
1035
static int vpif_streamon(struct file *file, void *priv,
1036
enum v4l2_buf_type buftype)
1038
struct vpif_fh *fh = priv;
1039
struct channel_obj *ch = fh->channel;
1040
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1041
struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id];
1042
struct vpif_params *vpif = &ch->vpifparams;
1043
struct vpif_display_config *vpif_config_data =
1044
vpif_dev->platform_data;
1045
unsigned long addr = 0;
1048
if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1049
vpif_err("buffer type not supported\n");
1053
if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1054
vpif_err("fh->io_allowed\n");
1058
/* If Streaming is already started, return error */
1059
if (common->started) {
1060
vpif_err("channel->started\n");
1064
if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
1065
&& oth_ch->common[VPIF_VIDEO_INDEX].started &&
1066
ch->vpifparams.std_info.ycmux_mode == 0)
1067
|| ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
1068
&& (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
1069
vpif_err("other channel is using\n");
1073
ret = vpif_check_format(ch, &common->fmt.fmt.pix);
1077
/* Call videobuf_streamon to start streaming in videobuf */
1078
ret = videobuf_streamon(&common->buffer_queue);
1080
vpif_err("videobuf_streamon\n");
1084
/* If buffer queue is empty, return error */
1085
if (list_empty(&common->dma_queue)) {
1086
vpif_err("buffer queue is empty\n");
1090
/* Get the next frame from the buffer queue */
1091
common->next_frm = common->cur_frm =
1092
list_entry(common->dma_queue.next,
1093
struct videobuf_buffer, queue);
1095
list_del(&common->cur_frm->queue);
1096
/* Mark state of the current frame to active */
1097
common->cur_frm->state = VIDEOBUF_ACTIVE;
1099
/* Initialize field_id and started member */
1101
common->started = 1;
1102
if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1103
addr = common->cur_frm->boff;
1104
/* Calculate the offset for Y and C data in the buffer */
1105
vpif_calculate_offsets(ch);
1107
if ((ch->vpifparams.std_info.frm_fmt &&
1108
((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
1109
&& (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
1110
|| (!ch->vpifparams.std_info.frm_fmt
1111
&& (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
1112
vpif_err("conflict in field format and std format\n");
1116
/* clock settings */
1118
vpif_config_data->set_clock(ch->vpifparams.std_info.ycmux_mode,
1119
ch->vpifparams.std_info.hd_sd);
1121
vpif_err("can't set clock\n");
1125
/* set the parameters and addresses */
1126
ret = vpif_set_video_params(vpif, ch->channel_id + 2);
1130
common->started = ret;
1131
vpif_config_addr(ch, ret);
1132
common->set_addr((addr + common->ytop_off),
1133
(addr + common->ybtm_off),
1134
(addr + common->ctop_off),
1135
(addr + common->cbtm_off));
1137
/* Set interrupt for both the fields in VPIF
1138
Register enable channel in VPIF register */
1139
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
1140
channel2_intr_assert();
1141
channel2_intr_enable(1);
1145
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
1146
|| (common->started == 2)) {
1147
channel3_intr_assert();
1148
channel3_intr_enable(1);
1151
channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
1156
static int vpif_streamoff(struct file *file, void *priv,
1157
enum v4l2_buf_type buftype)
1159
struct vpif_fh *fh = priv;
1160
struct channel_obj *ch = fh->channel;
1161
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1163
if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1164
vpif_err("buffer type not supported\n");
1168
if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
1169
vpif_err("fh->io_allowed\n");
1173
if (!common->started) {
1174
vpif_err("channel->started\n");
1178
if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1179
/* disable channel */
1180
if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
1182
channel2_intr_enable(0);
1184
if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
1185
(2 == common->started)) {
1187
channel3_intr_enable(0);
1191
common->started = 0;
1192
return videobuf_streamoff(&common->buffer_queue);
1195
static int vpif_cropcap(struct file *file, void *priv,
1196
struct v4l2_cropcap *crop)
1198
struct vpif_fh *fh = priv;
1199
struct channel_obj *ch = fh->channel;
1200
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1201
if (V4L2_BUF_TYPE_VIDEO_OUTPUT != crop->type)
1204
crop->bounds.left = crop->bounds.top = 0;
1205
crop->defrect.left = crop->defrect.top = 0;
1206
crop->defrect.height = crop->bounds.height = common->height;
1207
crop->defrect.width = crop->bounds.width = common->width;
1212
static int vpif_enum_output(struct file *file, void *fh,
1213
struct v4l2_output *output)
1216
struct vpif_display_config *config = vpif_dev->platform_data;
1218
if (output->index >= config->output_count) {
1219
vpif_dbg(1, debug, "Invalid output index\n");
1223
strcpy(output->name, config->output[output->index]);
1224
output->type = V4L2_OUTPUT_TYPE_ANALOG;
1225
output->std = DM646X_V4L2_STD;
1230
static int vpif_s_output(struct file *file, void *priv, unsigned int i)
1232
struct vpif_fh *fh = priv;
1233
struct channel_obj *ch = fh->channel;
1234
struct video_obj *vid_ch = &ch->video;
1235
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1238
if (common->started) {
1239
vpif_err("Streaming in progress\n");
1243
ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
1244
s_routing, 0, i, 0);
1247
vpif_err("Failed to set output standard\n");
1249
vid_ch->output_id = i;
1253
static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
1255
struct vpif_fh *fh = priv;
1256
struct channel_obj *ch = fh->channel;
1257
struct video_obj *vid_ch = &ch->video;
1259
*i = vid_ch->output_id;
1264
static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
1266
struct vpif_fh *fh = priv;
1267
struct channel_obj *ch = fh->channel;
1269
*p = v4l2_prio_max(&ch->prio);
1274
static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p)
1276
struct vpif_fh *fh = priv;
1277
struct channel_obj *ch = fh->channel;
1279
return v4l2_prio_change(&ch->prio, &fh->prio, p);
1283
* vpif_enum_dv_presets() - ENUM_DV_PRESETS handler
1285
* @priv: file handle
1286
* @preset: input preset
1288
static int vpif_enum_dv_presets(struct file *file, void *priv,
1289
struct v4l2_dv_enum_preset *preset)
1291
struct vpif_fh *fh = priv;
1292
struct channel_obj *ch = fh->channel;
1293
struct video_obj *vid_ch = &ch->video;
1295
return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1296
video, enum_dv_presets, preset);
1300
* vpif_s_dv_presets() - S_DV_PRESETS handler
1302
* @priv: file handle
1303
* @preset: input preset
1305
static int vpif_s_dv_preset(struct file *file, void *priv,
1306
struct v4l2_dv_preset *preset)
1308
struct vpif_fh *fh = priv;
1309
struct channel_obj *ch = fh->channel;
1310
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
1311
struct video_obj *vid_ch = &ch->video;
1314
if (common->started) {
1315
vpif_dbg(1, debug, "streaming in progress\n");
1319
ret = v4l2_prio_check(&ch->prio, fh->prio);
1323
fh->initialized = 1;
1325
/* Call encoder subdevice function to set the standard */
1326
if (mutex_lock_interruptible(&common->lock))
1327
return -ERESTARTSYS;
1329
ch->video.dv_preset = preset->preset;
1330
ch->video.stdid = V4L2_STD_UNKNOWN;
1331
memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
1333
/* Get the information about the standard */
1334
if (vpif_update_resolution(ch)) {
1337
/* Configure the default format information */
1338
vpif_config_format(ch);
1340
ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1341
video, s_dv_preset, preset);
1344
mutex_unlock(&common->lock);
1349
* vpif_g_dv_presets() - G_DV_PRESETS handler
1351
* @priv: file handle
1352
* @preset: input preset
1354
static int vpif_g_dv_preset(struct file *file, void *priv,
1355
struct v4l2_dv_preset *preset)
1357
struct vpif_fh *fh = priv;
1358
struct channel_obj *ch = fh->channel;
1360
preset->preset = ch->video.dv_preset;
1365
* vpif_s_dv_timings() - S_DV_TIMINGS handler
1367
* @priv: file handle
1368
* @timings: digital video timings
1370
static int vpif_s_dv_timings(struct file *file, void *priv,
1371
struct v4l2_dv_timings *timings)
1373
struct vpif_fh *fh = priv;
1374
struct channel_obj *ch = fh->channel;
1375
struct vpif_params *vpifparams = &ch->vpifparams;
1376
struct vpif_channel_config_params *std_info = &vpifparams->std_info;
1377
struct video_obj *vid_ch = &ch->video;
1378
struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
1381
if (timings->type != V4L2_DV_BT_656_1120) {
1382
vpif_dbg(2, debug, "Timing type not defined\n");
1386
/* Configure subdevice timings, if any */
1387
ret = v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id],
1388
video, s_dv_timings, timings);
1389
if (ret == -ENOIOCTLCMD) {
1390
vpif_dbg(2, debug, "Custom DV timings not supported by "
1395
vpif_dbg(2, debug, "Error setting custom DV timings\n");
1399
if (!(timings->bt.width && timings->bt.height &&
1400
(timings->bt.hbackporch ||
1401
timings->bt.hfrontporch ||
1402
timings->bt.hsync) &&
1403
timings->bt.vfrontporch &&
1404
(timings->bt.vbackporch ||
1405
timings->bt.vsync))) {
1406
vpif_dbg(2, debug, "Timings for width, height, "
1407
"horizontal back porch, horizontal sync, "
1408
"horizontal front porch, vertical back porch, "
1409
"vertical sync and vertical back porch "
1410
"must be defined\n");
1416
/* Configure video port timings */
1418
std_info->eav2sav = bt->hbackporch + bt->hfrontporch +
1420
std_info->sav2eav = bt->width;
1423
std_info->l3 = bt->vsync + bt->vbackporch + 1;
1425
if (bt->interlaced) {
1426
if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
1427
std_info->vsize = bt->height * 2 +
1428
bt->vfrontporch + bt->vsync + bt->vbackporch +
1429
bt->il_vfrontporch + bt->il_vsync +
1431
std_info->l5 = std_info->vsize/2 -
1432
(bt->vfrontporch - 1);
1433
std_info->l7 = std_info->vsize/2 + 1;
1434
std_info->l9 = std_info->l7 + bt->il_vsync +
1435
bt->il_vbackporch + 1;
1436
std_info->l11 = std_info->vsize -
1437
(bt->il_vfrontporch - 1);
1439
vpif_dbg(2, debug, "Required timing values for "
1440
"interlaced BT format missing\n");
1444
std_info->vsize = bt->height + bt->vfrontporch +
1445
bt->vsync + bt->vbackporch;
1446
std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
1448
strncpy(std_info->name, "Custom timings BT656/1120",
1450
std_info->width = bt->width;
1451
std_info->height = bt->height;
1452
std_info->frm_fmt = bt->interlaced ? 0 : 1;
1453
std_info->ycmux_mode = 0;
1454
std_info->capture_format = 0;
1455
std_info->vbi_supported = 0;
1456
std_info->hd_sd = 1;
1457
std_info->stdid = 0;
1458
std_info->dv_preset = V4L2_DV_INVALID;
1461
vid_ch->dv_preset = V4L2_DV_INVALID;
1467
* vpif_g_dv_timings() - G_DV_TIMINGS handler
1469
* @priv: file handle
1470
* @timings: digital video timings
1472
static int vpif_g_dv_timings(struct file *file, void *priv,
1473
struct v4l2_dv_timings *timings)
1475
struct vpif_fh *fh = priv;
1476
struct channel_obj *ch = fh->channel;
1477
struct video_obj *vid_ch = &ch->video;
1478
struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
1486
* vpif_g_chip_ident() - Identify the chip
1488
* @priv: file handle
1489
* @chip: chip identity
1491
* Returns zero or -EINVAL if read operations fails.
1493
static int vpif_g_chip_ident(struct file *file, void *priv,
1494
struct v4l2_dbg_chip_ident *chip)
1496
chip->ident = V4L2_IDENT_NONE;
1498
if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER &&
1499
chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) {
1500
vpif_dbg(2, debug, "match_type is invalid.\n");
1504
return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core,
1505
g_chip_ident, chip);
1508
#ifdef CONFIG_VIDEO_ADV_DEBUG
1510
* vpif_dbg_g_register() - Read register
1512
* @priv: file handle
1513
* @reg: register to be read
1516
* Returns zero or -EINVAL if read operations fails.
1518
static int vpif_dbg_g_register(struct file *file, void *priv,
1519
struct v4l2_dbg_register *reg){
1520
struct vpif_fh *fh = priv;
1521
struct channel_obj *ch = fh->channel;
1522
struct video_obj *vid_ch = &ch->video;
1524
return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core,
1529
* vpif_dbg_s_register() - Write to register
1531
* @priv: file handle
1532
* @reg: register to be modified
1535
* Returns zero or -EINVAL if write operations fails.
1537
static int vpif_dbg_s_register(struct file *file, void *priv,
1538
struct v4l2_dbg_register *reg){
1539
struct vpif_fh *fh = priv;
1540
struct channel_obj *ch = fh->channel;
1541
struct video_obj *vid_ch = &ch->video;
1543
return v4l2_subdev_call(vpif_obj.sd[vid_ch->output_id], core,
1549
* vpif_log_status() - Status information
1551
* @priv: file handle
1555
static int vpif_log_status(struct file *filep, void *priv)
1557
/* status for sub devices */
1558
v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
1563
/* vpif display ioctl operations */
1564
static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
1565
.vidioc_querycap = vpif_querycap,
1566
.vidioc_g_priority = vpif_g_priority,
1567
.vidioc_s_priority = vpif_s_priority,
1568
.vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
1569
.vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
1570
.vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
1571
.vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
1572
.vidioc_reqbufs = vpif_reqbufs,
1573
.vidioc_querybuf = vpif_querybuf,
1574
.vidioc_qbuf = vpif_qbuf,
1575
.vidioc_dqbuf = vpif_dqbuf,
1576
.vidioc_streamon = vpif_streamon,
1577
.vidioc_streamoff = vpif_streamoff,
1578
.vidioc_s_std = vpif_s_std,
1579
.vidioc_g_std = vpif_g_std,
1580
.vidioc_enum_output = vpif_enum_output,
1581
.vidioc_s_output = vpif_s_output,
1582
.vidioc_g_output = vpif_g_output,
1583
.vidioc_cropcap = vpif_cropcap,
1584
.vidioc_enum_dv_presets = vpif_enum_dv_presets,
1585
.vidioc_s_dv_preset = vpif_s_dv_preset,
1586
.vidioc_g_dv_preset = vpif_g_dv_preset,
1587
.vidioc_s_dv_timings = vpif_s_dv_timings,
1588
.vidioc_g_dv_timings = vpif_g_dv_timings,
1589
.vidioc_g_chip_ident = vpif_g_chip_ident,
1590
#ifdef CONFIG_VIDEO_ADV_DEBUG
1591
.vidioc_g_register = vpif_dbg_g_register,
1592
.vidioc_s_register = vpif_dbg_s_register,
1594
.vidioc_log_status = vpif_log_status,
1597
static const struct v4l2_file_operations vpif_fops = {
1598
.owner = THIS_MODULE,
1600
.release = vpif_release,
1601
.unlocked_ioctl = video_ioctl2,
1606
static struct video_device vpif_video_template = {
1609
.ioctl_ops = &vpif_ioctl_ops,
1610
.tvnorms = DM646X_V4L2_STD,
1611
.current_norm = V4L2_STD_625_50,
1615
/*Configure the channels, buffer sizei, request irq */
1616
static int initialize_vpif(void)
1618
int free_channel_objects_index;
1619
int free_buffer_channel_index;
1620
int free_buffer_index;
1623
/* Default number of buffers should be 3 */
1624
if ((ch2_numbuffers > 0) &&
1625
(ch2_numbuffers < config_params.min_numbuffers))
1626
ch2_numbuffers = config_params.min_numbuffers;
1627
if ((ch3_numbuffers > 0) &&
1628
(ch3_numbuffers < config_params.min_numbuffers))
1629
ch3_numbuffers = config_params.min_numbuffers;
1631
/* Set buffer size to min buffers size if invalid buffer size is
1633
if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO])
1635
config_params.min_bufsize[VPIF_CHANNEL2_VIDEO];
1636
if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO])
1638
config_params.min_bufsize[VPIF_CHANNEL3_VIDEO];
1640
config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers;
1642
if (ch2_numbuffers) {
1643
config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] =
1646
config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers;
1648
if (ch3_numbuffers) {
1649
config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] =
1653
/* Allocate memory for six channel objects */
1654
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1656
kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
1657
/* If memory allocation fails, return error */
1658
if (!vpif_obj.dev[i]) {
1659
free_channel_objects_index = i;
1661
goto vpif_init_free_channel_objects;
1665
free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES;
1666
free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS;
1667
free_buffer_index = config_params.numbuffers[i - 1];
1671
vpif_init_free_channel_objects:
1672
for (j = 0; j < free_channel_objects_index; j++)
1673
kfree(vpif_obj.dev[j]);
1678
* vpif_probe: This function creates device entries by register itself to the
1679
* V4L2 driver and initializes fields of each channel objects
1681
static __init int vpif_probe(struct platform_device *pdev)
1683
struct vpif_subdev_info *subdevdata;
1684
struct vpif_display_config *config;
1685
int i, j = 0, k, q, m, err = 0;
1686
struct i2c_adapter *i2c_adap;
1687
struct common_obj *common;
1688
struct channel_obj *ch;
1689
struct video_device *vfd;
1690
struct resource *res;
1693
vpif_dev = &pdev->dev;
1695
err = initialize_vpif();
1698
v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
1702
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
1704
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
1709
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
1710
for (i = res->start; i <= res->end; i++) {
1711
if (request_irq(i, vpif_channel_isr, IRQF_DISABLED,
1713
(void *)(&vpif_obj.dev[k]->channel_id))) {
1721
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1723
/* Get the pointer to the channel object */
1724
ch = vpif_obj.dev[i];
1726
/* Allocate memory for video device */
1727
vfd = video_device_alloc();
1729
for (j = 0; j < i; j++) {
1730
ch = vpif_obj.dev[j];
1731
video_device_release(ch->video_dev);
1737
/* Initialize field of video device */
1738
*vfd = vpif_video_template;
1739
vfd->v4l2_dev = &vpif_obj.v4l2_dev;
1740
vfd->release = video_device_release;
1741
snprintf(vfd->name, sizeof(vfd->name),
1742
"DM646x_VPIFDisplay_DRIVER_V%s",
1743
VPIF_DISPLAY_VERSION);
1745
/* Set video_dev to the video device */
1746
ch->video_dev = vfd;
1749
for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
1750
ch = vpif_obj.dev[j];
1751
/* Initialize field of the channel objects */
1752
atomic_set(&ch->usrs, 0);
1753
for (k = 0; k < VPIF_NUMOBJECTS; k++) {
1754
ch->common[k].numbuffers = 0;
1755
common = &ch->common[k];
1756
common->io_usrs = 0;
1757
common->started = 0;
1758
spin_lock_init(&common->irqlock);
1759
mutex_init(&common->lock);
1760
common->numbuffers = 0;
1761
common->set_addr = NULL;
1762
common->ytop_off = common->ybtm_off = 0;
1763
common->ctop_off = common->cbtm_off = 0;
1764
common->cur_frm = common->next_frm = NULL;
1765
memset(&common->fmt, 0, sizeof(common->fmt));
1766
common->numbuffers = config_params.numbuffers[k];
1769
ch->initialized = 0;
1772
ch->common[VPIF_VIDEO_INDEX].numbuffers =
1773
config_params.numbuffers[ch->channel_id];
1775
ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
1777
memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
1779
/* Initialize prio member of channel object */
1780
v4l2_prio_init(&ch->prio);
1781
ch->common[VPIF_VIDEO_INDEX].fmt.type =
1782
V4L2_BUF_TYPE_VIDEO_OUTPUT;
1783
ch->video_dev->lock = &common->lock;
1785
/* register video device */
1786
vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
1787
(int)ch, (int)&ch->video_dev);
1789
err = video_register_device(ch->video_dev,
1790
VFL_TYPE_GRABBER, (j ? 3 : 2));
1794
video_set_drvdata(ch->video_dev, ch);
1797
i2c_adap = i2c_get_adapter(1);
1798
config = pdev->dev.platform_data;
1799
subdev_count = config->subdev_count;
1800
subdevdata = config->subdevinfo;
1801
vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
1803
if (vpif_obj.sd == NULL) {
1804
vpif_err("unable to allocate memory for subdevice pointers\n");
1809
for (i = 0; i < subdev_count; i++) {
1810
vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
1812
&subdevdata[i].board_info,
1814
if (!vpif_obj.sd[i]) {
1815
vpif_err("Error registering v4l2 subdevice\n");
1816
goto probe_subdev_out;
1820
vpif_obj.sd[i]->grp_id = 1 << i;
1823
v4l2_info(&vpif_obj.v4l2_dev,
1824
"DM646x VPIF display driver initialized\n");
1830
for (k = 0; k < j; k++) {
1831
ch = vpif_obj.dev[k];
1832
video_unregister_device(ch->video_dev);
1833
video_device_release(ch->video_dev);
1834
ch->video_dev = NULL;
1837
v4l2_device_unregister(&vpif_obj.v4l2_dev);
1838
vpif_err("VPIF IRQ request failed\n");
1839
for (q = k; k >= 0; k--) {
1840
for (m = i; m >= res->start; m--)
1841
free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id));
1842
res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1);
1850
* vpif_remove: It un-register channels from V4L2 driver
1852
static int vpif_remove(struct platform_device *device)
1854
struct channel_obj *ch;
1857
v4l2_device_unregister(&vpif_obj.v4l2_dev);
1859
/* un-register device */
1860
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
1861
/* Get the pointer to the channel object */
1862
ch = vpif_obj.dev[i];
1863
/* Unregister video device */
1864
video_unregister_device(ch->video_dev);
1866
ch->video_dev = NULL;
1872
static __refdata struct platform_driver vpif_driver = {
1874
.name = "vpif_display",
1875
.owner = THIS_MODULE,
1877
.probe = vpif_probe,
1878
.remove = vpif_remove,
1881
static __init int vpif_init(void)
1883
return platform_driver_register(&vpif_driver);
1887
* vpif_cleanup: This function un-registers device and driver to the kernel,
1888
* frees requested irq handler and de-allocates memory allocated for channel
1891
static void vpif_cleanup(void)
1893
struct platform_device *pdev;
1894
struct resource *res;
1898
pdev = container_of(vpif_dev, struct platform_device, dev);
1900
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
1901
for (irq_num = res->start; irq_num <= res->end; irq_num++)
1903
(void *)(&vpif_obj.dev[i]->channel_id));
1907
platform_driver_unregister(&vpif_driver);
1909
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)
1910
kfree(vpif_obj.dev[i]);
1913
module_init(vpif_init);
1914
module_exit(vpif_cleanup);