1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
|
/*
* TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module
*
* Copyright (C) 2012 Texas Instruments, Inc.
*
* Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include "iss.h"
#include "iss_regs.h"
#include "iss_ipipeif.h"
static const unsigned int ipipeif_fmts[] = {
MEDIA_BUS_FMT_SGRBG10_1X10,
MEDIA_BUS_FMT_SRGGB10_1X10,
MEDIA_BUS_FMT_SBGGR10_1X10,
MEDIA_BUS_FMT_SGBRG10_1X10,
MEDIA_BUS_FMT_UYVY8_1X16,
MEDIA_BUS_FMT_YUYV8_1X16,
};
/*
* ipipeif_print_status - Print current IPIPEIF Module register values.
* @ipipeif: Pointer to ISS ISP IPIPEIF device.
*
* Also prints other debug information stored in the IPIPEIF module.
*/
#define IPIPEIF_PRINT_REGISTER(iss, name)\
dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \
iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_##name))
#define ISIF_PRINT_REGISTER(iss, name)\
dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \
iss_reg_read(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_##name))
#define ISP5_PRINT_REGISTER(iss, name)\
dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \
iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_##name))
static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif)
{
struct iss_device *iss = to_iss_device(ipipeif);
dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n");
IPIPEIF_PRINT_REGISTER(iss, CFG1);
IPIPEIF_PRINT_REGISTER(iss, CFG2);
ISIF_PRINT_REGISTER(iss, SYNCEN);
ISIF_PRINT_REGISTER(iss, CADU);
ISIF_PRINT_REGISTER(iss, CADL);
ISIF_PRINT_REGISTER(iss, MODESET);
ISIF_PRINT_REGISTER(iss, CCOLP);
ISIF_PRINT_REGISTER(iss, SPH);
ISIF_PRINT_REGISTER(iss, LNH);
ISIF_PRINT_REGISTER(iss, LNV);
ISIF_PRINT_REGISTER(iss, VDINT(0));
ISIF_PRINT_REGISTER(iss, HSIZE);
ISP5_PRINT_REGISTER(iss, SYSCONFIG);
ISP5_PRINT_REGISTER(iss, CTRL);
ISP5_PRINT_REGISTER(iss, IRQSTATUS(0));
ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0));
ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0));
dev_dbg(iss->dev, "-----------------------------------------------\n");
}
static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
{
struct iss_device *iss = to_iss_device(ipipeif);
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
ISIF_SYNCEN_DWEN, enable ? ISIF_SYNCEN_DWEN : 0);
}
/*
* ipipeif_enable - Enable/Disable IPIPEIF.
* @enable: enable flag
*
*/
static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
{
struct iss_device *iss = to_iss_device(ipipeif);
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
ISIF_SYNCEN_SYEN, enable ? ISIF_SYNCEN_SYEN : 0);
}
/* -----------------------------------------------------------------------------
* Format- and pipeline-related configuration helpers
*/
/*
* ipipeif_set_outaddr - Set memory address to save output image
* @ipipeif: Pointer to ISP IPIPEIF device.
* @addr: 32-bit memory address aligned on 32 byte boundary.
*
* Sets the memory address where the output will be saved.
*/
static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr)
{
struct iss_device *iss = to_iss_device(ipipeif);
/* Save address split in Base Address H & L */
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADU,
(addr >> (16 + 5)) & ISIF_CADU_MASK);
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADL,
(addr >> 5) & ISIF_CADL_MASK);
}
static void ipipeif_configure(struct iss_ipipeif_device *ipipeif)
{
struct iss_device *iss = to_iss_device(ipipeif);
const struct iss_format_info *info;
struct v4l2_mbus_framefmt *format;
u32 isif_ccolp = 0;
omap4iss_configure_bridge(iss, ipipeif->input);
/* IPIPEIF_PAD_SINK */
format = &ipipeif->formats[IPIPEIF_PAD_SINK];
/* IPIPEIF with YUV422 input from ISIF */
iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG1,
IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK);
/* Select ISIF/IPIPEIF input format */
switch (format->code) {
case MEDIA_BUS_FMT_UYVY8_1X16:
case MEDIA_BUS_FMT_YUYV8_1X16:
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
ISIF_MODESET_CCDW_MASK,
ISIF_MODESET_INPMOD_YCBCR16);
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
IPIPEIF_CFG2_YUV8, IPIPEIF_CFG2_YUV16);
break;
case MEDIA_BUS_FMT_SGRBG10_1X10:
isif_ccolp = ISIF_CCOLP_CP0_F0_GR |
ISIF_CCOLP_CP1_F0_R |
ISIF_CCOLP_CP2_F0_B |
ISIF_CCOLP_CP3_F0_GB;
goto cont_raw;
case MEDIA_BUS_FMT_SRGGB10_1X10:
isif_ccolp = ISIF_CCOLP_CP0_F0_R |
ISIF_CCOLP_CP1_F0_GR |
ISIF_CCOLP_CP2_F0_GB |
ISIF_CCOLP_CP3_F0_B;
goto cont_raw;
case MEDIA_BUS_FMT_SBGGR10_1X10:
isif_ccolp = ISIF_CCOLP_CP0_F0_B |
ISIF_CCOLP_CP1_F0_GB |
ISIF_CCOLP_CP2_F0_GR |
ISIF_CCOLP_CP3_F0_R;
goto cont_raw;
case MEDIA_BUS_FMT_SGBRG10_1X10:
isif_ccolp = ISIF_CCOLP_CP0_F0_GB |
ISIF_CCOLP_CP1_F0_B |
ISIF_CCOLP_CP2_F0_R |
ISIF_CCOLP_CP3_F0_GR;
cont_raw:
iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
IPIPEIF_CFG2_YUV16);
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
ISIF_MODESET_CCDW_MASK, ISIF_MODESET_INPMOD_RAW |
ISIF_MODESET_CCDW_2BIT);
info = omap4iss_video_format_info(format->code);
iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CGAMMAWD,
ISIF_CGAMMAWD_GWDI_MASK,
ISIF_CGAMMAWD_GWDI(info->bpp));
/* Set RAW Bayer pattern */
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CCOLP,
isif_ccolp);
break;
}
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SPH, 0 & ISIF_SPH_MASK);
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNH,
(format->width - 1) & ISIF_LNH_MASK);
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNV,
(format->height - 1) & ISIF_LNV_MASK);
/* Generate ISIF0 on the last line of the image */
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_VDINT(0),
format->height - 1);
/* IPIPEIF_PAD_SOURCE_ISIF_SF */
format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF];
iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_HSIZE,
(ipipeif->video_out.bpl_value >> 5) &
ISIF_HSIZE_HSIZE_MASK);
/* IPIPEIF_PAD_SOURCE_VP */
/* Do nothing? */
}
/* -----------------------------------------------------------------------------
* Interrupt handling
*/
static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
{
struct iss_buffer *buffer;
/* The ISIF generates VD0 interrupts even when writes are disabled.
* deal with it anyway). Disabling the ISIF when no buffer is available
* is thus not be enough, we need to handle the situation explicitly.
*/
if (list_empty(&ipipeif->video_out.dmaqueue))
return;
ipipeif_write_enable(ipipeif, 0);
buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
if (!buffer)
return;
ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
ipipeif_write_enable(ipipeif, 1);
}
/*
* omap4iss_ipipeif_isr - Configure ipipeif during interframe time.
* @ipipeif: Pointer to ISP IPIPEIF device.
* @events: IPIPEIF events
*/
void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events)
{
if (omap4iss_module_sync_is_stopping(&ipipeif->wait,
&ipipeif->stopping))
return;
if ((events & ISP5_IRQ_ISIF_INT(0)) &&
(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
ipipeif_isr_buffer(ipipeif);
}
/* -----------------------------------------------------------------------------
* ISP video operations
*/
static int ipipeif_video_queue(struct iss_video *video,
struct iss_buffer *buffer)
{
struct iss_ipipeif_device *ipipeif = container_of(video,
struct iss_ipipeif_device, video_out);
if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
return -ENODEV;
ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
/*
* If streaming was enabled before there was a buffer queued
* or underrun happened in the ISR, the hardware was not enabled
* and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
* Enable it now.
*/
if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
ipipeif_write_enable(ipipeif, 1);
ipipeif_enable(ipipeif, 1);
iss_video_dmaqueue_flags_clr(video);
}
return 0;
}
static const struct iss_video_operations ipipeif_video_ops = {
.queue = ipipeif_video_queue,
};
/* -----------------------------------------------------------------------------
* V4L2 subdev operations
*/
#define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\
OMAP4_ISS_ISP_SUBCLK_ISIF)
/*
* ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module
* @sd: ISP IPIPEIF V4L2 subdevice
* @enable: Enable/disable stream
*/
static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
{
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct iss_device *iss = to_iss_device(ipipeif);
struct iss_video *video_out = &ipipeif->video_out;
int ret = 0;
if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) {
if (enable == ISS_PIPELINE_STREAM_STOPPED)
return 0;
omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK);
}
switch (enable) {
case ISS_PIPELINE_STREAM_CONTINUOUS:
ipipeif_configure(ipipeif);
ipipeif_print_status(ipipeif);
/*
* When outputting to memory with no buffer available, let the
* buffer queue handler start the hardware. A DMA queue flag
* ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
* a buffer available.
*/
if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY &&
!(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED))
break;
atomic_set(&ipipeif->stopping, 0);
if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
ipipeif_write_enable(ipipeif, 1);
ipipeif_enable(ipipeif, 1);
iss_video_dmaqueue_flags_clr(video_out);
break;
case ISS_PIPELINE_STREAM_STOPPED:
if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED)
return 0;
if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait,
&ipipeif->stopping))
ret = -ETIMEDOUT;
if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
ipipeif_write_enable(ipipeif, 0);
ipipeif_enable(ipipeif, 0);
omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK);
iss_video_dmaqueue_flags_clr(video_out);
break;
}
ipipeif->state = enable;
return ret;
}
static struct v4l2_mbus_framefmt *
__ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
struct v4l2_subdev_pad_config *cfg, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
return &ipipeif->formats[pad];
}
/*
* ipipeif_try_format - Try video format on a pad
* @ipipeif: ISS IPIPEIF device
* @cfg: V4L2 subdev pad config
* @pad: Pad number
* @fmt: Format
*/
static void
ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
struct v4l2_subdev_pad_config *cfg, unsigned int pad,
struct v4l2_mbus_framefmt *fmt,
enum v4l2_subdev_format_whence which)
{
struct v4l2_mbus_framefmt *format;
unsigned int width = fmt->width;
unsigned int height = fmt->height;
unsigned int i;
switch (pad) {
case IPIPEIF_PAD_SINK:
/* TODO: If the IPIPEIF output formatter pad is connected
* directly to the resizer, only YUV formats can be used.
*/
for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) {
if (fmt->code == ipipeif_fmts[i])
break;
}
/* If not found, use SGRBG10 as default */
if (i >= ARRAY_SIZE(ipipeif_fmts))
fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
/* Clamp the input size. */
fmt->width = clamp_t(u32, width, 1, 8192);
fmt->height = clamp_t(u32, height, 1, 8192);
break;
case IPIPEIF_PAD_SOURCE_ISIF_SF:
format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
which);
memcpy(fmt, format, sizeof(*fmt));
/* The data formatter truncates the number of horizontal output
* pixels to a multiple of 16. To avoid clipping data, allow
* callers to request an output size bigger than the input size
* up to the nearest multiple of 16.
*/
fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
fmt->width &= ~15;
fmt->height = clamp_t(u32, height, 32, fmt->height);
break;
case IPIPEIF_PAD_SOURCE_VP:
format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
which);
memcpy(fmt, format, sizeof(*fmt));
fmt->width = clamp_t(u32, width, 32, fmt->width);
fmt->height = clamp_t(u32, height, 32, fmt->height);
break;
}
/* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
* stored on 2 bytes.
*/
fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->field = V4L2_FIELD_NONE;
}
/*
* ipipeif_enum_mbus_code - Handle pixel format enumeration
* @sd : pointer to v4l2 subdev structure
* @cfg : V4L2 subdev pad config
* @code : pointer to v4l2_subdev_mbus_code_enum structure
* return -EINVAL or zero on success
*/
static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
switch (code->pad) {
case IPIPEIF_PAD_SINK:
if (code->index >= ARRAY_SIZE(ipipeif_fmts))
return -EINVAL;
code->code = ipipeif_fmts[code->index];
break;
case IPIPEIF_PAD_SOURCE_ISIF_SF:
case IPIPEIF_PAD_SOURCE_VP:
/* No format conversion inside IPIPEIF */
if (code->index != 0)
return -EINVAL;
format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
code->which);
code->code = format->code;
break;
default:
return -EINVAL;
}
return 0;
}
static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_frame_size_enum *fse)
{
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt format;
if (fse->index != 0)
return -EINVAL;
format.code = fse->code;
format.width = 1;
format.height = 1;
ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
fse->min_width = format.width;
fse->min_height = format.height;
if (format.code != fse->code)
return -EINVAL;
format.code = fse->code;
format.width = -1;
format.height = -1;
ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
fse->max_width = format.width;
fse->max_height = format.height;
return 0;
}
/*
* ipipeif_get_format - Retrieve the video format on a pad
* @sd : ISP IPIPEIF V4L2 subdevice
* @cfg: V4L2 subdev pad config
* @fmt: Format
*
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
* to the format type.
*/
static int ipipeif_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
if (!format)
return -EINVAL;
fmt->format = *format;
return 0;
}
/*
* ipipeif_set_format - Set the video format on a pad
* @sd : ISP IPIPEIF V4L2 subdevice
* @cfg: V4L2 subdev pad config
* @fmt: Format
*
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
* to the format type.
*/
static int ipipeif_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *fmt)
{
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
if (!format)
return -EINVAL;
ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
*format = fmt->format;
/* Propagate the format from sink to source */
if (fmt->pad == IPIPEIF_PAD_SINK) {
format = __ipipeif_get_format(ipipeif, cfg,
IPIPEIF_PAD_SOURCE_ISIF_SF,
fmt->which);
*format = fmt->format;
ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_ISIF_SF,
format, fmt->which);
format = __ipipeif_get_format(ipipeif, cfg,
IPIPEIF_PAD_SOURCE_VP,
fmt->which);
*format = fmt->format;
ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_VP, format,
fmt->which);
}
return 0;
}
static int ipipeif_link_validate(struct v4l2_subdev *sd,
struct media_link *link,
struct v4l2_subdev_format *source_fmt,
struct v4l2_subdev_format *sink_fmt)
{
/* Check if the two ends match */
if (source_fmt->format.width != sink_fmt->format.width ||
source_fmt->format.height != sink_fmt->format.height)
return -EPIPE;
if (source_fmt->format.code != sink_fmt->format.code)
return -EPIPE;
return 0;
}
/*
* ipipeif_init_formats - Initialize formats on all pads
* @sd: ISP IPIPEIF V4L2 subdevice
* @fh: V4L2 subdev file handle
*
* Initialize all pad formats with default values. If fh is not NULL, try
* formats are initialized on the file handle. Otherwise active formats are
* initialized on the device.
*/
static int ipipeif_init_formats(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
struct v4l2_subdev_format format;
memset(&format, 0, sizeof(format));
format.pad = IPIPEIF_PAD_SINK;
format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
format.format.width = 4096;
format.format.height = 4096;
ipipeif_set_format(sd, fh ? fh->pad : NULL, &format);
return 0;
}
/* V4L2 subdev video operations */
static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
.s_stream = ipipeif_set_stream,
};
/* V4L2 subdev pad operations */
static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
.enum_mbus_code = ipipeif_enum_mbus_code,
.enum_frame_size = ipipeif_enum_frame_size,
.get_fmt = ipipeif_get_format,
.set_fmt = ipipeif_set_format,
.link_validate = ipipeif_link_validate,
};
/* V4L2 subdev operations */
static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
.video = &ipipeif_v4l2_video_ops,
.pad = &ipipeif_v4l2_pad_ops,
};
/* V4L2 subdev internal operations */
static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
.open = ipipeif_init_formats,
};
/* -----------------------------------------------------------------------------
* Media entity operations
*/
/*
* ipipeif_link_setup - Setup IPIPEIF connections
* @entity: IPIPEIF media entity
* @local: Pad at the local end of the link
* @remote: Pad at the remote end of the link
* @flags: Link flags
*
* return -EINVAL or zero on success
*/
static int ipipeif_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
struct iss_device *iss = to_iss_device(ipipeif);
unsigned int index = local->index;
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case IPIPEIF_PAD_SINK | 2 << 16:
/* Read from the sensor CSI2a or CSI2b. */
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ipipeif->input = IPIPEIF_INPUT_NONE;
break;
}
if (ipipeif->input != IPIPEIF_INPUT_NONE)
return -EBUSY;
if (remote->entity == &iss->csi2a.subdev.entity)
ipipeif->input = IPIPEIF_INPUT_CSI2A;
else if (remote->entity == &iss->csi2b.subdev.entity)
ipipeif->input = IPIPEIF_INPUT_CSI2B;
break;
case IPIPEIF_PAD_SOURCE_ISIF_SF:
/* Write to memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY)
return -EBUSY;
ipipeif->output |= IPIPEIF_OUTPUT_MEMORY;
} else {
ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY;
}
break;
case IPIPEIF_PAD_SOURCE_VP | 2 << 16:
/* Send to IPIPE/RESIZER */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ipipeif->output & ~IPIPEIF_OUTPUT_VP)
return -EBUSY;
ipipeif->output |= IPIPEIF_OUTPUT_VP;
} else {
ipipeif->output &= ~IPIPEIF_OUTPUT_VP;
}
break;
default:
return -EINVAL;
}
return 0;
}
/* media operations */
static const struct media_entity_operations ipipeif_media_ops = {
.link_setup = ipipeif_link_setup,
.link_validate = v4l2_subdev_link_validate,
};
/*
* ipipeif_init_entities - Initialize V4L2 subdev and media entity
* @ipipeif: ISS ISP IPIPEIF module
*
* Return 0 on success and a negative error code on failure.
*/
static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
{
struct v4l2_subdev *sd = &ipipeif->subdev;
struct media_pad *pads = ipipeif->pads;
struct media_entity *me = &sd->entity;
int ret;
ipipeif->input = IPIPEIF_INPUT_NONE;
v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
sd->internal_ops = &ipipeif_v4l2_internal_ops;
strscpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name));
sd->grp_id = BIT(16); /* group ID for iss subdevs */
v4l2_set_subdevdata(sd, ipipeif);
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE;
pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ipipeif_media_ops;
ret = media_entity_pads_init(me, IPIPEIF_PADS_NUM, pads);
if (ret < 0)
return ret;
ipipeif_init_formats(sd, NULL);
ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ipipeif->video_out.ops = &ipipeif_video_ops;
ipipeif->video_out.iss = to_iss_device(ipipeif);
ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
ipipeif->video_out.bpl_alignment = 32;
ipipeif->video_out.bpl_zero_padding = 1;
ipipeif->video_out.bpl_max = 0x1ffe0;
return omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
}
void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
{
v4l2_device_unregister_subdev(&ipipeif->subdev);
omap4iss_video_unregister(&ipipeif->video_out);
}
int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
struct v4l2_device *vdev)
{
int ret;
/* Register the subdev and video node. */
ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
if (ret < 0)
goto error;
ret = omap4iss_video_register(&ipipeif->video_out, vdev);
if (ret < 0)
goto error;
return 0;
error:
omap4iss_ipipeif_unregister_entities(ipipeif);
return ret;
}
/* -----------------------------------------------------------------------------
* ISP IPIPEIF initialisation and cleanup
*/
/*
* omap4iss_ipipeif_init - IPIPEIF module initialization.
* @iss: Device pointer specific to the OMAP4 ISS.
*
* TODO: Get the initialisation values from platform data.
*
* Return 0 on success or a negative error code otherwise.
*/
int omap4iss_ipipeif_init(struct iss_device *iss)
{
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
ipipeif->state = ISS_PIPELINE_STREAM_STOPPED;
init_waitqueue_head(&ipipeif->wait);
return ipipeif_init_entities(ipipeif);
}
/*
* omap4iss_ipipeif_create_links() - IPIPEIF pads links creation
* @iss: Pointer to ISS device
*
* return negative error code or zero on success
*/
int omap4iss_ipipeif_create_links(struct iss_device *iss)
{
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
/* Connect the IPIPEIF subdev to the video node. */
return media_create_pad_link(&ipipeif->subdev.entity,
IPIPEIF_PAD_SOURCE_ISIF_SF,
&ipipeif->video_out.video.entity, 0, 0);
}
/*
* omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
* @iss: Device pointer specific to the OMAP4 ISS.
*/
void omap4iss_ipipeif_cleanup(struct iss_device *iss)
{
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
media_entity_cleanup(&ipipeif->subdev.entity);
}
|