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14#include <linux/module.h>
15#include <linux/uaccess.h>
16#include <linux/delay.h>
17#include <linux/device.h>
18#include <linux/dma-mapping.h>
19#include <linux/mm.h>
20#include <linux/sched.h>
21
22#include "iss.h"
23#include "iss_regs.h"
24#include "iss_ipipe.h"
25
26static struct v4l2_mbus_framefmt *
27__ipipe_get_format(struct iss_ipipe_device *ipipe,
28 struct v4l2_subdev_pad_config *cfg,
29 unsigned int pad,
30 enum v4l2_subdev_format_whence which);
31
32static const unsigned int ipipe_fmts[] = {
33 MEDIA_BUS_FMT_SGRBG10_1X10,
34 MEDIA_BUS_FMT_SRGGB10_1X10,
35 MEDIA_BUS_FMT_SBGGR10_1X10,
36 MEDIA_BUS_FMT_SGBRG10_1X10,
37};
38
39
40
41
42
43
44
45#define IPIPE_PRINT_REGISTER(iss, name)\
46 dev_dbg(iss->dev, "###IPIPE " #name "=0x%08x\n", \
47 iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_##name))
48
49static void ipipe_print_status(struct iss_ipipe_device *ipipe)
50{
51 struct iss_device *iss = to_iss_device(ipipe);
52
53 dev_dbg(iss->dev, "-------------IPIPE Register dump-------------\n");
54
55 IPIPE_PRINT_REGISTER(iss, SRC_EN);
56 IPIPE_PRINT_REGISTER(iss, SRC_MODE);
57 IPIPE_PRINT_REGISTER(iss, SRC_FMT);
58 IPIPE_PRINT_REGISTER(iss, SRC_COL);
59 IPIPE_PRINT_REGISTER(iss, SRC_VPS);
60 IPIPE_PRINT_REGISTER(iss, SRC_VSZ);
61 IPIPE_PRINT_REGISTER(iss, SRC_HPS);
62 IPIPE_PRINT_REGISTER(iss, SRC_HSZ);
63 IPIPE_PRINT_REGISTER(iss, GCK_MMR);
64 IPIPE_PRINT_REGISTER(iss, YUV_PHS);
65
66 dev_dbg(iss->dev, "-----------------------------------------------\n");
67}
68
69
70
71
72
73
74static void ipipe_enable(struct iss_ipipe_device *ipipe, u8 enable)
75{
76 struct iss_device *iss = to_iss_device(ipipe);
77
78 iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_EN,
79 IPIPE_SRC_EN_EN, enable ? IPIPE_SRC_EN_EN : 0);
80}
81
82
83
84
85
86static void ipipe_configure(struct iss_ipipe_device *ipipe)
87{
88 struct iss_device *iss = to_iss_device(ipipe);
89 struct v4l2_mbus_framefmt *format;
90
91
92 format = &ipipe->formats[IPIPE_PAD_SINK];
93
94
95 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_FMT,
96 IPIPE_SRC_FMT_RAW2YUV);
97
98
99 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_YUV_PHS,
100 IPIPE_YUV_PHS_LPF);
101
102 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_VPS, 0);
103 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_HPS, 0);
104 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_VSZ,
105 (format->height - 2) & IPIPE_SRC_VSZ_MASK);
106 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_HSZ,
107 (format->width - 1) & IPIPE_SRC_HSZ_MASK);
108
109
110 iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_MODE,
111 IPIPE_SRC_MODE_WRT | IPIPE_SRC_MODE_OST);
112
113
114 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_SRC_COL,
115 IPIPE_SRC_COL_EE_B | IPIPE_SRC_COL_EO_GB |
116 IPIPE_SRC_COL_OE_GR | IPIPE_SRC_COL_OO_R);
117
118
119 format = &ipipe->formats[IPIPE_PAD_SOURCE_VP];
120
121}
122
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130
131
132static int ipipe_set_stream(struct v4l2_subdev *sd, int enable)
133{
134 struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
135 struct iss_device *iss = to_iss_device(ipipe);
136 int ret = 0;
137
138 if (ipipe->state == ISS_PIPELINE_STREAM_STOPPED) {
139 if (enable == ISS_PIPELINE_STREAM_STOPPED)
140 return 0;
141
142 omap4iss_isp_subclk_enable(iss, OMAP4_ISS_ISP_SUBCLK_IPIPE);
143
144
145 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_GCK_MMR,
146 IPIPE_GCK_MMR_REG);
147
148
149 iss_reg_write(iss, OMAP4_ISS_MEM_ISP_IPIPE, IPIPE_GCK_PIX,
150 IPIPE_GCK_PIX_G3 | IPIPE_GCK_PIX_G2 |
151 IPIPE_GCK_PIX_G1 | IPIPE_GCK_PIX_G0);
152 }
153
154 switch (enable) {
155 case ISS_PIPELINE_STREAM_CONTINUOUS:
156
157 ipipe_configure(ipipe);
158 ipipe_print_status(ipipe);
159
160 atomic_set(&ipipe->stopping, 0);
161 ipipe_enable(ipipe, 1);
162 break;
163
164 case ISS_PIPELINE_STREAM_STOPPED:
165 if (ipipe->state == ISS_PIPELINE_STREAM_STOPPED)
166 return 0;
167 if (omap4iss_module_sync_idle(&sd->entity, &ipipe->wait,
168 &ipipe->stopping))
169 ret = -ETIMEDOUT;
170
171 ipipe_enable(ipipe, 0);
172 omap4iss_isp_subclk_disable(iss, OMAP4_ISS_ISP_SUBCLK_IPIPE);
173 break;
174 }
175
176 ipipe->state = enable;
177 return ret;
178}
179
180static struct v4l2_mbus_framefmt *
181__ipipe_get_format(struct iss_ipipe_device *ipipe,
182 struct v4l2_subdev_pad_config *cfg,
183 unsigned int pad,
184 enum v4l2_subdev_format_whence which)
185{
186 if (which == V4L2_SUBDEV_FORMAT_TRY)
187 return v4l2_subdev_get_try_format(&ipipe->subdev, cfg, pad);
188
189 return &ipipe->formats[pad];
190}
191
192
193
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195
196
197
198
199static void
200ipipe_try_format(struct iss_ipipe_device *ipipe,
201 struct v4l2_subdev_pad_config *cfg,
202 unsigned int pad,
203 struct v4l2_mbus_framefmt *fmt,
204 enum v4l2_subdev_format_whence which)
205{
206 struct v4l2_mbus_framefmt *format;
207 unsigned int width = fmt->width;
208 unsigned int height = fmt->height;
209 unsigned int i;
210
211 switch (pad) {
212 case IPIPE_PAD_SINK:
213 for (i = 0; i < ARRAY_SIZE(ipipe_fmts); i++) {
214 if (fmt->code == ipipe_fmts[i])
215 break;
216 }
217
218
219 if (i >= ARRAY_SIZE(ipipe_fmts))
220 fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
221
222
223 fmt->width = clamp_t(u32, width, 1, 8192);
224 fmt->height = clamp_t(u32, height, 1, 8192);
225 fmt->colorspace = V4L2_COLORSPACE_SRGB;
226 break;
227
228 case IPIPE_PAD_SOURCE_VP:
229 format = __ipipe_get_format(ipipe, cfg, IPIPE_PAD_SINK, which);
230 memcpy(fmt, format, sizeof(*fmt));
231
232 fmt->code = MEDIA_BUS_FMT_UYVY8_1X16;
233 fmt->width = clamp_t(u32, width, 32, fmt->width);
234 fmt->height = clamp_t(u32, height, 32, fmt->height);
235 fmt->colorspace = V4L2_COLORSPACE_JPEG;
236 break;
237 }
238
239 fmt->field = V4L2_FIELD_NONE;
240}
241
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243
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246
247
248
249static int ipipe_enum_mbus_code(struct v4l2_subdev *sd,
250 struct v4l2_subdev_pad_config *cfg,
251 struct v4l2_subdev_mbus_code_enum *code)
252{
253 switch (code->pad) {
254 case IPIPE_PAD_SINK:
255 if (code->index >= ARRAY_SIZE(ipipe_fmts))
256 return -EINVAL;
257
258 code->code = ipipe_fmts[code->index];
259 break;
260
261 case IPIPE_PAD_SOURCE_VP:
262
263 if (code->index != 0)
264 return -EINVAL;
265
266 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
267 break;
268
269 default:
270 return -EINVAL;
271 }
272
273 return 0;
274}
275
276static int ipipe_enum_frame_size(struct v4l2_subdev *sd,
277 struct v4l2_subdev_pad_config *cfg,
278 struct v4l2_subdev_frame_size_enum *fse)
279{
280 struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
281 struct v4l2_mbus_framefmt format;
282
283 if (fse->index != 0)
284 return -EINVAL;
285
286 format.code = fse->code;
287 format.width = 1;
288 format.height = 1;
289 ipipe_try_format(ipipe, cfg, fse->pad, &format, fse->which);
290 fse->min_width = format.width;
291 fse->min_height = format.height;
292
293 if (format.code != fse->code)
294 return -EINVAL;
295
296 format.code = fse->code;
297 format.width = -1;
298 format.height = -1;
299 ipipe_try_format(ipipe, cfg, fse->pad, &format, fse->which);
300 fse->max_width = format.width;
301 fse->max_height = format.height;
302
303 return 0;
304}
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313
314
315static int ipipe_get_format(struct v4l2_subdev *sd,
316 struct v4l2_subdev_pad_config *cfg,
317 struct v4l2_subdev_format *fmt)
318{
319 struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
320 struct v4l2_mbus_framefmt *format;
321
322 format = __ipipe_get_format(ipipe, cfg, fmt->pad, fmt->which);
323 if (format == NULL)
324 return -EINVAL;
325
326 fmt->format = *format;
327 return 0;
328}
329
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337
338
339static int ipipe_set_format(struct v4l2_subdev *sd,
340 struct v4l2_subdev_pad_config *cfg,
341 struct v4l2_subdev_format *fmt)
342{
343 struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
344 struct v4l2_mbus_framefmt *format;
345
346 format = __ipipe_get_format(ipipe, cfg, fmt->pad, fmt->which);
347 if (format == NULL)
348 return -EINVAL;
349
350 ipipe_try_format(ipipe, cfg, fmt->pad, &fmt->format, fmt->which);
351 *format = fmt->format;
352
353
354 if (fmt->pad == IPIPE_PAD_SINK) {
355 format = __ipipe_get_format(ipipe, cfg, IPIPE_PAD_SOURCE_VP,
356 fmt->which);
357 *format = fmt->format;
358 ipipe_try_format(ipipe, cfg, IPIPE_PAD_SOURCE_VP, format,
359 fmt->which);
360 }
361
362 return 0;
363}
364
365static int ipipe_link_validate(struct v4l2_subdev *sd, struct media_link *link,
366 struct v4l2_subdev_format *source_fmt,
367 struct v4l2_subdev_format *sink_fmt)
368{
369
370 if (source_fmt->format.width != sink_fmt->format.width ||
371 source_fmt->format.height != sink_fmt->format.height)
372 return -EPIPE;
373
374 if (source_fmt->format.code != sink_fmt->format.code)
375 return -EPIPE;
376
377 return 0;
378}
379
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388
389static int ipipe_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
390{
391 struct v4l2_subdev_format format;
392
393 memset(&format, 0, sizeof(format));
394 format.pad = IPIPE_PAD_SINK;
395 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
396 format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
397 format.format.width = 4096;
398 format.format.height = 4096;
399 ipipe_set_format(sd, fh ? fh->pad : NULL, &format);
400
401 return 0;
402}
403
404
405static const struct v4l2_subdev_video_ops ipipe_v4l2_video_ops = {
406 .s_stream = ipipe_set_stream,
407};
408
409
410static const struct v4l2_subdev_pad_ops ipipe_v4l2_pad_ops = {
411 .enum_mbus_code = ipipe_enum_mbus_code,
412 .enum_frame_size = ipipe_enum_frame_size,
413 .get_fmt = ipipe_get_format,
414 .set_fmt = ipipe_set_format,
415 .link_validate = ipipe_link_validate,
416};
417
418
419static const struct v4l2_subdev_ops ipipe_v4l2_ops = {
420 .video = &ipipe_v4l2_video_ops,
421 .pad = &ipipe_v4l2_pad_ops,
422};
423
424
425static const struct v4l2_subdev_internal_ops ipipe_v4l2_internal_ops = {
426 .open = ipipe_init_formats,
427};
428
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441
442static int ipipe_link_setup(struct media_entity *entity,
443 const struct media_pad *local,
444 const struct media_pad *remote, u32 flags)
445{
446 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
447 struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
448 struct iss_device *iss = to_iss_device(ipipe);
449
450 switch (local->index | media_entity_type(remote->entity)) {
451 case IPIPE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
452
453 if (!(flags & MEDIA_LNK_FL_ENABLED)) {
454 ipipe->input = IPIPE_INPUT_NONE;
455 break;
456 }
457
458 if (ipipe->input != IPIPE_INPUT_NONE)
459 return -EBUSY;
460
461 if (remote->entity == &iss->ipipeif.subdev.entity)
462 ipipe->input = IPIPE_INPUT_IPIPEIF;
463
464 break;
465
466 case IPIPE_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
467
468 if (flags & MEDIA_LNK_FL_ENABLED) {
469 if (ipipe->output & ~IPIPE_OUTPUT_VP)
470 return -EBUSY;
471 ipipe->output |= IPIPE_OUTPUT_VP;
472 } else {
473 ipipe->output &= ~IPIPE_OUTPUT_VP;
474 }
475 break;
476
477 default:
478 return -EINVAL;
479 }
480
481 return 0;
482}
483
484
485static const struct media_entity_operations ipipe_media_ops = {
486 .link_setup = ipipe_link_setup,
487 .link_validate = v4l2_subdev_link_validate,
488};
489
490
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492
493
494
495
496static int ipipe_init_entities(struct iss_ipipe_device *ipipe)
497{
498 struct v4l2_subdev *sd = &ipipe->subdev;
499 struct media_pad *pads = ipipe->pads;
500 struct media_entity *me = &sd->entity;
501 int ret;
502
503 ipipe->input = IPIPE_INPUT_NONE;
504
505 v4l2_subdev_init(sd, &ipipe_v4l2_ops);
506 sd->internal_ops = &ipipe_v4l2_internal_ops;
507 strlcpy(sd->name, "OMAP4 ISS ISP IPIPE", sizeof(sd->name));
508 sd->grp_id = 1 << 16;
509 v4l2_set_subdevdata(sd, ipipe);
510 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
511
512 pads[IPIPE_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
513 pads[IPIPE_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
514
515 me->ops = &ipipe_media_ops;
516 ret = media_entity_init(me, IPIPE_PADS_NUM, pads, 0);
517 if (ret < 0)
518 return ret;
519
520 ipipe_init_formats(sd, NULL);
521
522 return 0;
523}
524
525void omap4iss_ipipe_unregister_entities(struct iss_ipipe_device *ipipe)
526{
527 v4l2_device_unregister_subdev(&ipipe->subdev);
528}
529
530int omap4iss_ipipe_register_entities(struct iss_ipipe_device *ipipe,
531 struct v4l2_device *vdev)
532{
533 int ret;
534
535
536 ret = v4l2_device_register_subdev(vdev, &ipipe->subdev);
537 if (ret < 0)
538 goto error;
539
540 return 0;
541
542error:
543 omap4iss_ipipe_unregister_entities(ipipe);
544 return ret;
545}
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557
558
559int omap4iss_ipipe_init(struct iss_device *iss)
560{
561 struct iss_ipipe_device *ipipe = &iss->ipipe;
562
563 ipipe->state = ISS_PIPELINE_STREAM_STOPPED;
564 init_waitqueue_head(&ipipe->wait);
565
566 return ipipe_init_entities(ipipe);
567}
568
569
570
571
572
573void omap4iss_ipipe_cleanup(struct iss_device *iss)
574{
575 struct iss_ipipe_device *ipipe = &iss->ipipe;
576
577 media_entity_cleanup(&ipipe->subdev.entity);
578}
579