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1234734bccf4d3943d047e53a2f54347d73c58c0
[deliverable/linux.git] / drivers / media / platform / exynos4-is / fimc-lite.c
1 /*
2 * Samsung EXYNOS FIMC-LITE (camera host interface) driver
3 *
4 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
5 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
12
13 #include <linux/bug.h>
14 #include <linux/clk.h>
15 #include <linux/device.h>
16 #include <linux/errno.h>
17 #include <linux/interrupt.h>
18 #include <linux/kernel.h>
19 #include <linux/list.h>
20 #include <linux/module.h>
21 #include <linux/of.h>
22 #include <linux/types.h>
23 #include <linux/platform_device.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/slab.h>
26 #include <linux/videodev2.h>
27
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-ioctl.h>
30 #include <media/v4l2-mem2mem.h>
31 #include <media/videobuf2-core.h>
32 #include <media/videobuf2-dma-contig.h>
33 #include <media/s5p_fimc.h>
34
35 #include "common.h"
36 #include "fimc-core.h"
37 #include "fimc-lite.h"
38 #include "fimc-lite-reg.h"
39
40 static int debug;
41 module_param(debug, int, 0644);
42
43 static const struct fimc_fmt fimc_lite_formats[] = {
44 {
45 .name = "YUV 4:2:2 packed, YCbYCr",
46 .fourcc = V4L2_PIX_FMT_YUYV,
47 .colorspace = V4L2_COLORSPACE_JPEG,
48 .depth = { 16 },
49 .color = FIMC_FMT_YCBYCR422,
50 .memplanes = 1,
51 .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8,
52 .flags = FMT_FLAGS_YUV,
53 }, {
54 .name = "YUV 4:2:2 packed, CbYCrY",
55 .fourcc = V4L2_PIX_FMT_UYVY,
56 .colorspace = V4L2_COLORSPACE_JPEG,
57 .depth = { 16 },
58 .color = FIMC_FMT_CBYCRY422,
59 .memplanes = 1,
60 .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8,
61 .flags = FMT_FLAGS_YUV,
62 }, {
63 .name = "YUV 4:2:2 packed, CrYCbY",
64 .fourcc = V4L2_PIX_FMT_VYUY,
65 .colorspace = V4L2_COLORSPACE_JPEG,
66 .depth = { 16 },
67 .color = FIMC_FMT_CRYCBY422,
68 .memplanes = 1,
69 .mbus_code = V4L2_MBUS_FMT_VYUY8_2X8,
70 .flags = FMT_FLAGS_YUV,
71 }, {
72 .name = "YUV 4:2:2 packed, YCrYCb",
73 .fourcc = V4L2_PIX_FMT_YVYU,
74 .colorspace = V4L2_COLORSPACE_JPEG,
75 .depth = { 16 },
76 .color = FIMC_FMT_YCRYCB422,
77 .memplanes = 1,
78 .mbus_code = V4L2_MBUS_FMT_YVYU8_2X8,
79 .flags = FMT_FLAGS_YUV,
80 }, {
81 .name = "RAW8 (GRBG)",
82 .fourcc = V4L2_PIX_FMT_SGRBG8,
83 .colorspace = V4L2_COLORSPACE_SRGB,
84 .depth = { 8 },
85 .color = FIMC_FMT_RAW8,
86 .memplanes = 1,
87 .mbus_code = V4L2_MBUS_FMT_SGRBG8_1X8,
88 .flags = FMT_FLAGS_RAW_BAYER,
89 }, {
90 .name = "RAW10 (GRBG)",
91 .fourcc = V4L2_PIX_FMT_SGRBG10,
92 .colorspace = V4L2_COLORSPACE_SRGB,
93 .depth = { 16 },
94 .color = FIMC_FMT_RAW10,
95 .memplanes = 1,
96 .mbus_code = V4L2_MBUS_FMT_SGRBG10_1X10,
97 .flags = FMT_FLAGS_RAW_BAYER,
98 }, {
99 .name = "RAW12 (GRBG)",
100 .fourcc = V4L2_PIX_FMT_SGRBG12,
101 .colorspace = V4L2_COLORSPACE_SRGB,
102 .depth = { 16 },
103 .color = FIMC_FMT_RAW12,
104 .memplanes = 1,
105 .mbus_code = V4L2_MBUS_FMT_SGRBG12_1X12,
106 .flags = FMT_FLAGS_RAW_BAYER,
107 },
108 };
109
110 /**
111 * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code
112 * @pixelformat: fourcc to match, ignored if null
113 * @mbus_code: media bus code to match, ignored if null
114 * @mask: the color format flags to match
115 * @index: index to the fimc_lite_formats array, ignored if negative
116 */
117 static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat,
118 const u32 *mbus_code, unsigned int mask, int index)
119 {
120 const struct fimc_fmt *fmt, *def_fmt = NULL;
121 unsigned int i;
122 int id = 0;
123
124 if (index >= (int)ARRAY_SIZE(fimc_lite_formats))
125 return NULL;
126
127 for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) {
128 fmt = &fimc_lite_formats[i];
129 if (mask && !(fmt->flags & mask))
130 continue;
131 if (pixelformat && fmt->fourcc == *pixelformat)
132 return fmt;
133 if (mbus_code && fmt->mbus_code == *mbus_code)
134 return fmt;
135 if (index == id)
136 def_fmt = fmt;
137 id++;
138 }
139 return def_fmt;
140 }
141
142 static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output)
143 {
144 struct fimc_source_info *si;
145 unsigned long flags;
146
147 if (fimc->sensor == NULL)
148 return -ENXIO;
149
150 if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL)
151 return -EINVAL;
152
153 /* Get sensor configuration data from the sensor subdev */
154 si = v4l2_get_subdev_hostdata(fimc->sensor);
155 if (!si)
156 return -EINVAL;
157
158 spin_lock_irqsave(&fimc->slock, flags);
159
160 flite_hw_set_camera_bus(fimc, si);
161 flite_hw_set_source_format(fimc, &fimc->inp_frame);
162 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
163 flite_hw_set_dma_buf_mask(fimc, 0);
164 flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output);
165 flite_hw_set_interrupt_mask(fimc);
166 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
167
168 if (debug > 0)
169 flite_hw_dump_regs(fimc, __func__);
170
171 spin_unlock_irqrestore(&fimc->slock, flags);
172 return 0;
173 }
174
175 /*
176 * Reinitialize the driver so it is ready to start the streaming again.
177 * Set fimc->state to indicate stream off and the hardware shut down state.
178 * If not suspending (@suspend is false), return any buffers to videobuf2.
179 * Otherwise put any owned buffers onto the pending buffers queue, so they
180 * can be re-spun when the device is being resumed. Also perform FIMC
181 * software reset and disable streaming on the whole pipeline if required.
182 */
183 static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend)
184 {
185 struct flite_buffer *buf;
186 unsigned long flags;
187 bool streaming;
188
189 spin_lock_irqsave(&fimc->slock, flags);
190 streaming = fimc->state & (1 << ST_SENSOR_STREAM);
191
192 fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF |
193 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM);
194 if (suspend)
195 fimc->state |= (1 << ST_FLITE_SUSPENDED);
196 else
197 fimc->state &= ~(1 << ST_FLITE_PENDING |
198 1 << ST_FLITE_SUSPENDED);
199
200 /* Release unused buffers */
201 while (!suspend && !list_empty(&fimc->pending_buf_q)) {
202 buf = fimc_lite_pending_queue_pop(fimc);
203 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
204 }
205 /* If suspending put unused buffers onto pending queue */
206 while (!list_empty(&fimc->active_buf_q)) {
207 buf = fimc_lite_active_queue_pop(fimc);
208 if (suspend)
209 fimc_lite_pending_queue_add(fimc, buf);
210 else
211 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
212 }
213
214 spin_unlock_irqrestore(&fimc->slock, flags);
215
216 flite_hw_reset(fimc);
217
218 if (!streaming)
219 return 0;
220
221 return fimc_pipeline_call(&fimc->ve, set_stream, 0);
222 }
223
224 static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
225 {
226 unsigned long flags;
227
228 if (!fimc_lite_active(fimc))
229 return 0;
230
231 spin_lock_irqsave(&fimc->slock, flags);
232 set_bit(ST_FLITE_OFF, &fimc->state);
233 flite_hw_capture_stop(fimc);
234 spin_unlock_irqrestore(&fimc->slock, flags);
235
236 wait_event_timeout(fimc->irq_queue,
237 !test_bit(ST_FLITE_OFF, &fimc->state),
238 (2*HZ/10)); /* 200 ms */
239
240 return fimc_lite_reinit(fimc, suspend);
241 }
242
243 /* Must be called with fimc.slock spinlock held. */
244 static void fimc_lite_config_update(struct fimc_lite *fimc)
245 {
246 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
247 flite_hw_set_dma_window(fimc, &fimc->out_frame);
248 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
249 clear_bit(ST_FLITE_CONFIG, &fimc->state);
250 }
251
252 static irqreturn_t flite_irq_handler(int irq, void *priv)
253 {
254 struct fimc_lite *fimc = priv;
255 struct flite_buffer *vbuf;
256 unsigned long flags;
257 struct timeval *tv;
258 struct timespec ts;
259 u32 intsrc;
260
261 spin_lock_irqsave(&fimc->slock, flags);
262
263 intsrc = flite_hw_get_interrupt_source(fimc);
264 flite_hw_clear_pending_irq(fimc);
265
266 if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) {
267 wake_up(&fimc->irq_queue);
268 goto done;
269 }
270
271 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) {
272 clear_bit(ST_FLITE_RUN, &fimc->state);
273 fimc->events.data_overflow++;
274 }
275
276 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) {
277 flite_hw_clear_last_capture_end(fimc);
278 clear_bit(ST_FLITE_STREAM, &fimc->state);
279 wake_up(&fimc->irq_queue);
280 }
281
282 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA)
283 goto done;
284
285 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) &&
286 test_bit(ST_FLITE_RUN, &fimc->state) &&
287 !list_empty(&fimc->pending_buf_q)) {
288 vbuf = fimc_lite_pending_queue_pop(fimc);
289 flite_hw_set_dma_buffer(fimc, vbuf);
290 fimc_lite_active_queue_add(fimc, vbuf);
291 }
292
293 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) &&
294 test_bit(ST_FLITE_RUN, &fimc->state) &&
295 !list_empty(&fimc->active_buf_q)) {
296 vbuf = fimc_lite_active_queue_pop(fimc);
297 ktime_get_ts(&ts);
298 tv = &vbuf->vb.v4l2_buf.timestamp;
299 tv->tv_sec = ts.tv_sec;
300 tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
301 vbuf->vb.v4l2_buf.sequence = fimc->frame_count++;
302 flite_hw_mask_dma_buffer(fimc, vbuf->index);
303 vb2_buffer_done(&vbuf->vb, VB2_BUF_STATE_DONE);
304 }
305
306 if (test_bit(ST_FLITE_CONFIG, &fimc->state))
307 fimc_lite_config_update(fimc);
308
309 if (list_empty(&fimc->pending_buf_q)) {
310 flite_hw_capture_stop(fimc);
311 clear_bit(ST_FLITE_STREAM, &fimc->state);
312 }
313 done:
314 set_bit(ST_FLITE_RUN, &fimc->state);
315 spin_unlock_irqrestore(&fimc->slock, flags);
316 return IRQ_HANDLED;
317 }
318
319 static int start_streaming(struct vb2_queue *q, unsigned int count)
320 {
321 struct fimc_lite *fimc = q->drv_priv;
322 unsigned long flags;
323 int ret;
324
325 spin_lock_irqsave(&fimc->slock, flags);
326
327 fimc->buf_index = 0;
328 fimc->frame_count = 0;
329
330 spin_unlock_irqrestore(&fimc->slock, flags);
331
332 ret = fimc_lite_hw_init(fimc, false);
333 if (ret) {
334 fimc_lite_reinit(fimc, false);
335 return ret;
336 }
337
338 set_bit(ST_FLITE_PENDING, &fimc->state);
339
340 if (!list_empty(&fimc->active_buf_q) &&
341 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
342 flite_hw_capture_start(fimc);
343
344 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
345 fimc_pipeline_call(&fimc->ve, set_stream, 1);
346 }
347 if (debug > 0)
348 flite_hw_dump_regs(fimc, __func__);
349
350 return 0;
351 }
352
353 static int stop_streaming(struct vb2_queue *q)
354 {
355 struct fimc_lite *fimc = q->drv_priv;
356
357 if (!fimc_lite_active(fimc))
358 return -EINVAL;
359
360 return fimc_lite_stop_capture(fimc, false);
361 }
362
363 static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt,
364 unsigned int *num_buffers, unsigned int *num_planes,
365 unsigned int sizes[], void *allocators[])
366 {
367 const struct v4l2_pix_format_mplane *pixm = NULL;
368 struct fimc_lite *fimc = vq->drv_priv;
369 struct flite_frame *frame = &fimc->out_frame;
370 const struct fimc_fmt *fmt = frame->fmt;
371 unsigned long wh;
372 int i;
373
374 if (pfmt) {
375 pixm = &pfmt->fmt.pix_mp;
376 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, 0, -1);
377 wh = pixm->width * pixm->height;
378 } else {
379 wh = frame->f_width * frame->f_height;
380 }
381
382 if (fmt == NULL)
383 return -EINVAL;
384
385 *num_planes = fmt->memplanes;
386
387 for (i = 0; i < fmt->memplanes; i++) {
388 unsigned int size = (wh * fmt->depth[i]) / 8;
389 if (pixm)
390 sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
391 else
392 sizes[i] = size;
393 allocators[i] = fimc->alloc_ctx;
394 }
395
396 return 0;
397 }
398
399 static int buffer_prepare(struct vb2_buffer *vb)
400 {
401 struct vb2_queue *vq = vb->vb2_queue;
402 struct fimc_lite *fimc = vq->drv_priv;
403 int i;
404
405 if (fimc->out_frame.fmt == NULL)
406 return -EINVAL;
407
408 for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) {
409 unsigned long size = fimc->payload[i];
410
411 if (vb2_plane_size(vb, i) < size) {
412 v4l2_err(&fimc->ve.vdev,
413 "User buffer too small (%ld < %ld)\n",
414 vb2_plane_size(vb, i), size);
415 return -EINVAL;
416 }
417 vb2_set_plane_payload(vb, i, size);
418 }
419
420 return 0;
421 }
422
423 static void buffer_queue(struct vb2_buffer *vb)
424 {
425 struct flite_buffer *buf
426 = container_of(vb, struct flite_buffer, vb);
427 struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue);
428 unsigned long flags;
429
430 spin_lock_irqsave(&fimc->slock, flags);
431 buf->paddr = vb2_dma_contig_plane_dma_addr(vb, 0);
432
433 buf->index = fimc->buf_index++;
434 if (fimc->buf_index >= fimc->reqbufs_count)
435 fimc->buf_index = 0;
436
437 if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
438 !test_bit(ST_FLITE_STREAM, &fimc->state) &&
439 list_empty(&fimc->active_buf_q)) {
440 flite_hw_set_dma_buffer(fimc, buf);
441 fimc_lite_active_queue_add(fimc, buf);
442 } else {
443 fimc_lite_pending_queue_add(fimc, buf);
444 }
445
446 if (vb2_is_streaming(&fimc->vb_queue) &&
447 !list_empty(&fimc->pending_buf_q) &&
448 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
449 flite_hw_capture_start(fimc);
450 spin_unlock_irqrestore(&fimc->slock, flags);
451
452 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
453 fimc_pipeline_call(&fimc->ve, set_stream, 1);
454 return;
455 }
456 spin_unlock_irqrestore(&fimc->slock, flags);
457 }
458
459 static const struct vb2_ops fimc_lite_qops = {
460 .queue_setup = queue_setup,
461 .buf_prepare = buffer_prepare,
462 .buf_queue = buffer_queue,
463 .wait_prepare = vb2_ops_wait_prepare,
464 .wait_finish = vb2_ops_wait_finish,
465 .start_streaming = start_streaming,
466 .stop_streaming = stop_streaming,
467 };
468
469 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
470 {
471 unsigned long flags;
472
473 spin_lock_irqsave(&fimc->slock, flags);
474 memset(&fimc->events, 0, sizeof(fimc->events));
475 spin_unlock_irqrestore(&fimc->slock, flags);
476 }
477
478 static int fimc_lite_open(struct file *file)
479 {
480 struct fimc_lite *fimc = video_drvdata(file);
481 struct media_entity *me = &fimc->ve.vdev.entity;
482 int ret;
483
484 mutex_lock(&fimc->lock);
485 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
486 ret = -EBUSY;
487 goto unlock;
488 }
489
490 set_bit(ST_FLITE_IN_USE, &fimc->state);
491 ret = pm_runtime_get_sync(&fimc->pdev->dev);
492 if (ret < 0)
493 goto unlock;
494
495 ret = v4l2_fh_open(file);
496 if (ret < 0)
497 goto err_pm;
498
499 if (!v4l2_fh_is_singular_file(file) ||
500 atomic_read(&fimc->out_path) != FIMC_IO_DMA)
501 goto unlock;
502
503 mutex_lock(&me->parent->graph_mutex);
504
505 ret = fimc_pipeline_call(&fimc->ve, open, me, true);
506
507 /* Mark video pipeline ending at this video node as in use. */
508 if (ret == 0)
509 me->use_count++;
510
511 mutex_unlock(&me->parent->graph_mutex);
512
513 if (!ret) {
514 fimc_lite_clear_event_counters(fimc);
515 goto unlock;
516 }
517
518 v4l2_fh_release(file);
519 err_pm:
520 pm_runtime_put_sync(&fimc->pdev->dev);
521 clear_bit(ST_FLITE_IN_USE, &fimc->state);
522 unlock:
523 mutex_unlock(&fimc->lock);
524 return ret;
525 }
526
527 static int fimc_lite_release(struct file *file)
528 {
529 struct fimc_lite *fimc = video_drvdata(file);
530 struct media_entity *entity = &fimc->ve.vdev.entity;
531
532 mutex_lock(&fimc->lock);
533
534 if (v4l2_fh_is_singular_file(file) &&
535 atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
536 if (fimc->streaming) {
537 media_entity_pipeline_stop(entity);
538 fimc->streaming = false;
539 }
540 fimc_lite_stop_capture(fimc, false);
541 fimc_pipeline_call(&fimc->ve, close);
542 clear_bit(ST_FLITE_IN_USE, &fimc->state);
543
544 mutex_lock(&entity->parent->graph_mutex);
545 entity->use_count--;
546 mutex_unlock(&entity->parent->graph_mutex);
547 }
548
549 _vb2_fop_release(file, NULL);
550 pm_runtime_put(&fimc->pdev->dev);
551 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
552
553 mutex_unlock(&fimc->lock);
554 return 0;
555 }
556
557 static const struct v4l2_file_operations fimc_lite_fops = {
558 .owner = THIS_MODULE,
559 .open = fimc_lite_open,
560 .release = fimc_lite_release,
561 .poll = vb2_fop_poll,
562 .unlocked_ioctl = video_ioctl2,
563 .mmap = vb2_fop_mmap,
564 };
565
566 /*
567 * Format and crop negotiation helpers
568 */
569
570 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
571 struct v4l2_subdev_fh *fh,
572 struct v4l2_subdev_format *format)
573 {
574 struct flite_drvdata *dd = fimc->dd;
575 struct v4l2_mbus_framefmt *mf = &format->format;
576 const struct fimc_fmt *fmt = NULL;
577
578 if (format->pad == FLITE_SD_PAD_SINK) {
579 v4l_bound_align_image(&mf->width, 8, dd->max_width,
580 ffs(dd->out_width_align) - 1,
581 &mf->height, 0, dd->max_height, 0, 0);
582
583 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
584 if (WARN_ON(!fmt))
585 return NULL;
586
587 mf->colorspace = fmt->colorspace;
588 mf->code = fmt->mbus_code;
589 } else {
590 struct flite_frame *sink = &fimc->inp_frame;
591 struct v4l2_mbus_framefmt *sink_fmt;
592 struct v4l2_rect *rect;
593
594 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
595 sink_fmt = v4l2_subdev_get_try_format(fh,
596 FLITE_SD_PAD_SINK);
597
598 mf->code = sink_fmt->code;
599 mf->colorspace = sink_fmt->colorspace;
600
601 rect = v4l2_subdev_get_try_crop(fh,
602 FLITE_SD_PAD_SINK);
603 } else {
604 mf->code = sink->fmt->mbus_code;
605 mf->colorspace = sink->fmt->colorspace;
606 rect = &sink->rect;
607 }
608
609 /* Allow changing format only on sink pad */
610 mf->width = rect->width;
611 mf->height = rect->height;
612 }
613
614 mf->field = V4L2_FIELD_NONE;
615
616 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
617 mf->code, mf->colorspace, mf->width, mf->height);
618
619 return fmt;
620 }
621
622 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
623 {
624 struct flite_frame *frame = &fimc->inp_frame;
625
626 v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
627 &r->height, 0, frame->f_height, 0, 0);
628
629 /* Adjust left/top if cropping rectangle got out of bounds */
630 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
631 r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
632 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
633
634 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
635 r->left, r->top, r->width, r->height,
636 frame->f_width, frame->f_height);
637 }
638
639 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
640 {
641 struct flite_frame *frame = &fimc->out_frame;
642 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
643
644 /* Scaling is not supported so we enforce compose rectangle size
645 same as size of the sink crop rectangle. */
646 r->width = crop_rect->width;
647 r->height = crop_rect->height;
648
649 /* Adjust left/top if the composing rectangle got out of bounds */
650 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
651 r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
652 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
653
654 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
655 r->left, r->top, r->width, r->height,
656 frame->f_width, frame->f_height);
657 }
658
659 /*
660 * Video node ioctl operations
661 */
662 static int fimc_lite_querycap(struct file *file, void *priv,
663 struct v4l2_capability *cap)
664 {
665 struct fimc_lite *fimc = video_drvdata(file);
666
667 strlcpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
668 strlcpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
669 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
670 dev_name(&fimc->pdev->dev));
671
672 cap->device_caps = V4L2_CAP_STREAMING;
673 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
674 return 0;
675 }
676
677 static int fimc_lite_enum_fmt_mplane(struct file *file, void *priv,
678 struct v4l2_fmtdesc *f)
679 {
680 const struct fimc_fmt *fmt;
681
682 if (f->index >= ARRAY_SIZE(fimc_lite_formats))
683 return -EINVAL;
684
685 fmt = &fimc_lite_formats[f->index];
686 strlcpy(f->description, fmt->name, sizeof(f->description));
687 f->pixelformat = fmt->fourcc;
688
689 return 0;
690 }
691
692 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
693 struct v4l2_format *f)
694 {
695 struct fimc_lite *fimc = video_drvdata(file);
696 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
697 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
698 struct flite_frame *frame = &fimc->out_frame;
699 const struct fimc_fmt *fmt = frame->fmt;
700
701 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
702 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
703
704 pixm->num_planes = fmt->memplanes;
705 pixm->pixelformat = fmt->fourcc;
706 pixm->width = frame->f_width;
707 pixm->height = frame->f_height;
708 pixm->field = V4L2_FIELD_NONE;
709 pixm->colorspace = fmt->colorspace;
710 return 0;
711 }
712
713 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
714 struct v4l2_pix_format_mplane *pixm,
715 const struct fimc_fmt **ffmt)
716 {
717 u32 bpl = pixm->plane_fmt[0].bytesperline;
718 struct flite_drvdata *dd = fimc->dd;
719 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
720 const struct fimc_fmt *fmt;
721
722 if (WARN_ON(inp_fmt == NULL))
723 return -EINVAL;
724 /*
725 * We allow some flexibility only for YUV formats. In case of raw
726 * raw Bayer the FIMC-LITE's output format must match its camera
727 * interface input format.
728 */
729 if (inp_fmt->flags & FMT_FLAGS_YUV)
730 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
731 inp_fmt->flags, 0);
732 else
733 fmt = inp_fmt;
734
735 if (WARN_ON(fmt == NULL))
736 return -EINVAL;
737 if (ffmt)
738 *ffmt = fmt;
739 v4l_bound_align_image(&pixm->width, 8, dd->max_width,
740 ffs(dd->out_width_align) - 1,
741 &pixm->height, 0, dd->max_height, 0, 0);
742
743 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
744 pixm->plane_fmt[0].bytesperline = (pixm->width *
745 fmt->depth[0]) / 8;
746
747 if (pixm->plane_fmt[0].sizeimage == 0)
748 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
749 fmt->depth[0]) / 8;
750 pixm->num_planes = fmt->memplanes;
751 pixm->pixelformat = fmt->fourcc;
752 pixm->colorspace = fmt->colorspace;
753 pixm->field = V4L2_FIELD_NONE;
754 return 0;
755 }
756
757 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
758 struct v4l2_format *f)
759 {
760 struct fimc_lite *fimc = video_drvdata(file);
761 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
762 }
763
764 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
765 struct v4l2_format *f)
766 {
767 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
768 struct fimc_lite *fimc = video_drvdata(file);
769 struct flite_frame *frame = &fimc->out_frame;
770 const struct fimc_fmt *fmt = NULL;
771 int ret;
772
773 if (vb2_is_busy(&fimc->vb_queue))
774 return -EBUSY;
775
776 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
777 if (ret < 0)
778 return ret;
779
780 frame->fmt = fmt;
781 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
782 pixm->plane_fmt[0].sizeimage);
783 frame->f_width = pixm->width;
784 frame->f_height = pixm->height;
785
786 return 0;
787 }
788
789 static int fimc_pipeline_validate(struct fimc_lite *fimc)
790 {
791 struct v4l2_subdev *sd = &fimc->subdev;
792 struct v4l2_subdev_format sink_fmt, src_fmt;
793 struct media_pad *pad;
794 int ret;
795
796 while (1) {
797 /* Retrieve format at the sink pad */
798 pad = &sd->entity.pads[0];
799 if (!(pad->flags & MEDIA_PAD_FL_SINK))
800 break;
801 /* Don't call FIMC subdev operation to avoid nested locking */
802 if (sd == &fimc->subdev) {
803 struct flite_frame *ff = &fimc->out_frame;
804 sink_fmt.format.width = ff->f_width;
805 sink_fmt.format.height = ff->f_height;
806 sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
807 } else {
808 sink_fmt.pad = pad->index;
809 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
810 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
811 &sink_fmt);
812 if (ret < 0 && ret != -ENOIOCTLCMD)
813 return -EPIPE;
814 }
815 /* Retrieve format at the source pad */
816 pad = media_entity_remote_pad(pad);
817 if (pad == NULL ||
818 media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
819 break;
820
821 sd = media_entity_to_v4l2_subdev(pad->entity);
822 src_fmt.pad = pad->index;
823 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
824 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
825 if (ret < 0 && ret != -ENOIOCTLCMD)
826 return -EPIPE;
827
828 if (src_fmt.format.width != sink_fmt.format.width ||
829 src_fmt.format.height != sink_fmt.format.height ||
830 src_fmt.format.code != sink_fmt.format.code)
831 return -EPIPE;
832 }
833 return 0;
834 }
835
836 static int fimc_lite_streamon(struct file *file, void *priv,
837 enum v4l2_buf_type type)
838 {
839 struct fimc_lite *fimc = video_drvdata(file);
840 struct media_entity *entity = &fimc->ve.vdev.entity;
841 int ret;
842
843 if (fimc_lite_active(fimc))
844 return -EBUSY;
845
846 ret = media_entity_pipeline_start(entity, &fimc->ve.pipe->mp);
847 if (ret < 0)
848 return ret;
849
850 ret = fimc_pipeline_validate(fimc);
851 if (ret < 0)
852 goto err_p_stop;
853
854 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
855
856 ret = vb2_ioctl_streamon(file, priv, type);
857 if (!ret) {
858 fimc->streaming = true;
859 return ret;
860 }
861
862 err_p_stop:
863 media_entity_pipeline_stop(entity);
864 return 0;
865 }
866
867 static int fimc_lite_streamoff(struct file *file, void *priv,
868 enum v4l2_buf_type type)
869 {
870 struct fimc_lite *fimc = video_drvdata(file);
871 int ret;
872
873 ret = vb2_ioctl_streamoff(file, priv, type);
874 if (ret < 0)
875 return ret;
876
877 media_entity_pipeline_stop(&fimc->ve.vdev.entity);
878 fimc->streaming = false;
879 return 0;
880 }
881
882 static int fimc_lite_reqbufs(struct file *file, void *priv,
883 struct v4l2_requestbuffers *reqbufs)
884 {
885 struct fimc_lite *fimc = video_drvdata(file);
886 int ret;
887
888 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
889 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
890 if (!ret)
891 fimc->reqbufs_count = reqbufs->count;
892
893 return ret;
894 }
895
896 /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
897 static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
898 {
899 if (a->left < b->left || a->top < b->top)
900 return 0;
901 if (a->left + a->width > b->left + b->width)
902 return 0;
903 if (a->top + a->height > b->top + b->height)
904 return 0;
905
906 return 1;
907 }
908
909 static int fimc_lite_g_selection(struct file *file, void *fh,
910 struct v4l2_selection *sel)
911 {
912 struct fimc_lite *fimc = video_drvdata(file);
913 struct flite_frame *f = &fimc->out_frame;
914
915 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
916 return -EINVAL;
917
918 switch (sel->target) {
919 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
920 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
921 sel->r.left = 0;
922 sel->r.top = 0;
923 sel->r.width = f->f_width;
924 sel->r.height = f->f_height;
925 return 0;
926
927 case V4L2_SEL_TGT_COMPOSE:
928 sel->r = f->rect;
929 return 0;
930 }
931
932 return -EINVAL;
933 }
934
935 static int fimc_lite_s_selection(struct file *file, void *fh,
936 struct v4l2_selection *sel)
937 {
938 struct fimc_lite *fimc = video_drvdata(file);
939 struct flite_frame *f = &fimc->out_frame;
940 struct v4l2_rect rect = sel->r;
941 unsigned long flags;
942
943 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
944 sel->target != V4L2_SEL_TGT_COMPOSE)
945 return -EINVAL;
946
947 fimc_lite_try_compose(fimc, &rect);
948
949 if ((sel->flags & V4L2_SEL_FLAG_LE) &&
950 !enclosed_rectangle(&rect, &sel->r))
951 return -ERANGE;
952
953 if ((sel->flags & V4L2_SEL_FLAG_GE) &&
954 !enclosed_rectangle(&sel->r, &rect))
955 return -ERANGE;
956
957 sel->r = rect;
958 spin_lock_irqsave(&fimc->slock, flags);
959 f->rect = rect;
960 set_bit(ST_FLITE_CONFIG, &fimc->state);
961 spin_unlock_irqrestore(&fimc->slock, flags);
962
963 return 0;
964 }
965
966 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
967 .vidioc_querycap = fimc_lite_querycap,
968 .vidioc_enum_fmt_vid_cap_mplane = fimc_lite_enum_fmt_mplane,
969 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
970 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
971 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
972 .vidioc_g_selection = fimc_lite_g_selection,
973 .vidioc_s_selection = fimc_lite_s_selection,
974 .vidioc_reqbufs = fimc_lite_reqbufs,
975 .vidioc_querybuf = vb2_ioctl_querybuf,
976 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
977 .vidioc_create_bufs = vb2_ioctl_create_bufs,
978 .vidioc_qbuf = vb2_ioctl_qbuf,
979 .vidioc_dqbuf = vb2_ioctl_dqbuf,
980 .vidioc_streamon = fimc_lite_streamon,
981 .vidioc_streamoff = fimc_lite_streamoff,
982 };
983
984 /* Capture subdev media entity operations */
985 static int fimc_lite_link_setup(struct media_entity *entity,
986 const struct media_pad *local,
987 const struct media_pad *remote, u32 flags)
988 {
989 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
990 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
991 unsigned int remote_ent_type = media_entity_type(remote->entity);
992 int ret = 0;
993
994 if (WARN_ON(fimc == NULL))
995 return 0;
996
997 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
998 __func__, remote->entity->name, local->entity->name,
999 flags, fimc->source_subdev_grp_id);
1000
1001 switch (local->index) {
1002 case FLITE_SD_PAD_SINK:
1003 if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
1004 ret = -EINVAL;
1005 break;
1006 }
1007 if (flags & MEDIA_LNK_FL_ENABLED) {
1008 if (fimc->source_subdev_grp_id == 0)
1009 fimc->source_subdev_grp_id = sd->grp_id;
1010 else
1011 ret = -EBUSY;
1012 } else {
1013 fimc->source_subdev_grp_id = 0;
1014 fimc->sensor = NULL;
1015 }
1016 break;
1017
1018 case FLITE_SD_PAD_SOURCE_DMA:
1019 if (!(flags & MEDIA_LNK_FL_ENABLED))
1020 atomic_set(&fimc->out_path, FIMC_IO_NONE);
1021 else if (remote_ent_type == MEDIA_ENT_T_DEVNODE)
1022 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1023 else
1024 ret = -EINVAL;
1025 break;
1026
1027 case FLITE_SD_PAD_SOURCE_ISP:
1028 if (!(flags & MEDIA_LNK_FL_ENABLED))
1029 atomic_set(&fimc->out_path, FIMC_IO_NONE);
1030 else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV)
1031 atomic_set(&fimc->out_path, FIMC_IO_ISP);
1032 else
1033 ret = -EINVAL;
1034 break;
1035
1036 default:
1037 v4l2_err(sd, "Invalid pad index\n");
1038 ret = -EINVAL;
1039 }
1040 mb();
1041
1042 return ret;
1043 }
1044
1045 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
1046 .link_setup = fimc_lite_link_setup,
1047 };
1048
1049 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1050 struct v4l2_subdev_fh *fh,
1051 struct v4l2_subdev_mbus_code_enum *code)
1052 {
1053 const struct fimc_fmt *fmt;
1054
1055 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1056 if (!fmt)
1057 return -EINVAL;
1058 code->code = fmt->mbus_code;
1059 return 0;
1060 }
1061
1062 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1063 struct v4l2_subdev_fh *fh, unsigned int pad)
1064 {
1065 if (pad != FLITE_SD_PAD_SINK)
1066 pad = FLITE_SD_PAD_SOURCE_DMA;
1067
1068 return v4l2_subdev_get_try_format(fh, pad);
1069 }
1070
1071 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1072 struct v4l2_subdev_fh *fh,
1073 struct v4l2_subdev_format *fmt)
1074 {
1075 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1076 struct v4l2_mbus_framefmt *mf = &fmt->format;
1077 struct flite_frame *f = &fimc->inp_frame;
1078
1079 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1080 mf = __fimc_lite_subdev_get_try_fmt(fh, fmt->pad);
1081 fmt->format = *mf;
1082 return 0;
1083 }
1084
1085 mutex_lock(&fimc->lock);
1086 mf->colorspace = f->fmt->colorspace;
1087 mf->code = f->fmt->mbus_code;
1088
1089 if (fmt->pad == FLITE_SD_PAD_SINK) {
1090 /* full camera input frame size */
1091 mf->width = f->f_width;
1092 mf->height = f->f_height;
1093 } else {
1094 /* crop size */
1095 mf->width = f->rect.width;
1096 mf->height = f->rect.height;
1097 }
1098 mutex_unlock(&fimc->lock);
1099 return 0;
1100 }
1101
1102 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1103 struct v4l2_subdev_fh *fh,
1104 struct v4l2_subdev_format *fmt)
1105 {
1106 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1107 struct v4l2_mbus_framefmt *mf = &fmt->format;
1108 struct flite_frame *sink = &fimc->inp_frame;
1109 struct flite_frame *source = &fimc->out_frame;
1110 const struct fimc_fmt *ffmt;
1111
1112 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1113 fmt->pad, mf->code, mf->width, mf->height);
1114
1115 mutex_lock(&fimc->lock);
1116
1117 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1118 sd->entity.stream_count > 0) ||
1119 (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1120 vb2_is_busy(&fimc->vb_queue))) {
1121 mutex_unlock(&fimc->lock);
1122 return -EBUSY;
1123 }
1124
1125 ffmt = fimc_lite_subdev_try_fmt(fimc, fh, fmt);
1126
1127 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1128 struct v4l2_mbus_framefmt *src_fmt;
1129
1130 mf = __fimc_lite_subdev_get_try_fmt(fh, fmt->pad);
1131 *mf = fmt->format;
1132
1133 if (fmt->pad == FLITE_SD_PAD_SINK) {
1134 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1135 src_fmt = __fimc_lite_subdev_get_try_fmt(fh, pad);
1136 *src_fmt = *mf;
1137 }
1138
1139 mutex_unlock(&fimc->lock);
1140 return 0;
1141 }
1142
1143 if (fmt->pad == FLITE_SD_PAD_SINK) {
1144 sink->f_width = mf->width;
1145 sink->f_height = mf->height;
1146 sink->fmt = ffmt;
1147 /* Set sink crop rectangle */
1148 sink->rect.width = mf->width;
1149 sink->rect.height = mf->height;
1150 sink->rect.left = 0;
1151 sink->rect.top = 0;
1152 /* Reset source format and crop rectangle */
1153 source->rect = sink->rect;
1154 source->f_width = mf->width;
1155 source->f_height = mf->height;
1156 }
1157
1158 mutex_unlock(&fimc->lock);
1159 return 0;
1160 }
1161
1162 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1163 struct v4l2_subdev_fh *fh,
1164 struct v4l2_subdev_selection *sel)
1165 {
1166 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1167 struct flite_frame *f = &fimc->inp_frame;
1168
1169 if ((sel->target != V4L2_SEL_TGT_CROP &&
1170 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1171 sel->pad != FLITE_SD_PAD_SINK)
1172 return -EINVAL;
1173
1174 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1175 sel->r = *v4l2_subdev_get_try_crop(fh, sel->pad);
1176 return 0;
1177 }
1178
1179 mutex_lock(&fimc->lock);
1180 if (sel->target == V4L2_SEL_TGT_CROP) {
1181 sel->r = f->rect;
1182 } else {
1183 sel->r.left = 0;
1184 sel->r.top = 0;
1185 sel->r.width = f->f_width;
1186 sel->r.height = f->f_height;
1187 }
1188 mutex_unlock(&fimc->lock);
1189
1190 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1191 __func__, f->rect.left, f->rect.top, f->rect.width,
1192 f->rect.height, f->f_width, f->f_height);
1193
1194 return 0;
1195 }
1196
1197 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1198 struct v4l2_subdev_fh *fh,
1199 struct v4l2_subdev_selection *sel)
1200 {
1201 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1202 struct flite_frame *f = &fimc->inp_frame;
1203 int ret = 0;
1204
1205 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1206 return -EINVAL;
1207
1208 mutex_lock(&fimc->lock);
1209 fimc_lite_try_crop(fimc, &sel->r);
1210
1211 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1212 *v4l2_subdev_get_try_crop(fh, sel->pad) = sel->r;
1213 } else {
1214 unsigned long flags;
1215 spin_lock_irqsave(&fimc->slock, flags);
1216 f->rect = sel->r;
1217 /* Same crop rectangle on the source pad */
1218 fimc->out_frame.rect = sel->r;
1219 set_bit(ST_FLITE_CONFIG, &fimc->state);
1220 spin_unlock_irqrestore(&fimc->slock, flags);
1221 }
1222 mutex_unlock(&fimc->lock);
1223
1224 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1225 __func__, f->rect.left, f->rect.top, f->rect.width,
1226 f->rect.height, f->f_width, f->f_height);
1227
1228 return ret;
1229 }
1230
1231 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1232 {
1233 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1234 unsigned long flags;
1235 int ret;
1236
1237 /*
1238 * Find sensor subdev linked to FIMC-LITE directly or through
1239 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1240 * is used as a subdev only and feeds data internally to FIMC-IS.
1241 * The pipeline links are protected through entity.stream_count
1242 * so there is no need to take the media graph mutex here.
1243 */
1244 fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1245
1246 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1247 return -ENOIOCTLCMD;
1248
1249 mutex_lock(&fimc->lock);
1250 if (on) {
1251 flite_hw_reset(fimc);
1252 ret = fimc_lite_hw_init(fimc, true);
1253 if (!ret) {
1254 spin_lock_irqsave(&fimc->slock, flags);
1255 flite_hw_capture_start(fimc);
1256 spin_unlock_irqrestore(&fimc->slock, flags);
1257 }
1258 } else {
1259 set_bit(ST_FLITE_OFF, &fimc->state);
1260
1261 spin_lock_irqsave(&fimc->slock, flags);
1262 flite_hw_capture_stop(fimc);
1263 spin_unlock_irqrestore(&fimc->slock, flags);
1264
1265 ret = wait_event_timeout(fimc->irq_queue,
1266 !test_bit(ST_FLITE_OFF, &fimc->state),
1267 msecs_to_jiffies(200));
1268 if (ret == 0)
1269 v4l2_err(sd, "s_stream(0) timeout\n");
1270 clear_bit(ST_FLITE_RUN, &fimc->state);
1271 }
1272
1273 mutex_unlock(&fimc->lock);
1274 return ret;
1275 }
1276
1277 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1278 {
1279 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1280
1281 flite_hw_dump_regs(fimc, __func__);
1282 return 0;
1283 }
1284
1285 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1286 {
1287 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1288 struct vb2_queue *q = &fimc->vb_queue;
1289 struct video_device *vfd = &fimc->ve.vdev;
1290 int ret;
1291
1292 memset(vfd, 0, sizeof(*vfd));
1293 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1294
1295 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1296 fimc->index);
1297
1298 vfd->fops = &fimc_lite_fops;
1299 vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1300 vfd->v4l2_dev = sd->v4l2_dev;
1301 vfd->minor = -1;
1302 vfd->release = video_device_release_empty;
1303 vfd->queue = q;
1304 fimc->reqbufs_count = 0;
1305
1306 INIT_LIST_HEAD(&fimc->pending_buf_q);
1307 INIT_LIST_HEAD(&fimc->active_buf_q);
1308
1309 memset(q, 0, sizeof(*q));
1310 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1311 q->io_modes = VB2_MMAP | VB2_USERPTR;
1312 q->ops = &fimc_lite_qops;
1313 q->mem_ops = &vb2_dma_contig_memops;
1314 q->buf_struct_size = sizeof(struct flite_buffer);
1315 q->drv_priv = fimc;
1316 q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1317 q->lock = &fimc->lock;
1318
1319 ret = vb2_queue_init(q);
1320 if (ret < 0)
1321 return ret;
1322
1323 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1324 ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0);
1325 if (ret < 0)
1326 return ret;
1327
1328 video_set_drvdata(vfd, fimc);
1329 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1330
1331 ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
1332 if (ret < 0) {
1333 media_entity_cleanup(&vfd->entity);
1334 fimc->ve.pipe = NULL;
1335 return ret;
1336 }
1337
1338 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1339 vfd->name, video_device_node_name(vfd));
1340 return 0;
1341 }
1342
1343 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1344 {
1345 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1346
1347 if (fimc == NULL)
1348 return;
1349
1350 mutex_lock(&fimc->lock);
1351
1352 if (video_is_registered(&fimc->ve.vdev)) {
1353 video_unregister_device(&fimc->ve.vdev);
1354 media_entity_cleanup(&fimc->ve.vdev.entity);
1355 fimc->ve.pipe = NULL;
1356 }
1357
1358 mutex_unlock(&fimc->lock);
1359 }
1360
1361 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1362 .registered = fimc_lite_subdev_registered,
1363 .unregistered = fimc_lite_subdev_unregistered,
1364 };
1365
1366 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1367 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1368 .get_selection = fimc_lite_subdev_get_selection,
1369 .set_selection = fimc_lite_subdev_set_selection,
1370 .get_fmt = fimc_lite_subdev_get_fmt,
1371 .set_fmt = fimc_lite_subdev_set_fmt,
1372 };
1373
1374 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1375 .s_stream = fimc_lite_subdev_s_stream,
1376 };
1377
1378 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1379 .log_status = fimc_lite_log_status,
1380 };
1381
1382 static struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1383 .core = &fimc_lite_core_ops,
1384 .video = &fimc_lite_subdev_video_ops,
1385 .pad = &fimc_lite_subdev_pad_ops,
1386 };
1387
1388 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1389 {
1390 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1391 ctrl_handler);
1392 set_bit(ST_FLITE_CONFIG, &fimc->state);
1393 return 0;
1394 }
1395
1396 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1397 .s_ctrl = fimc_lite_s_ctrl,
1398 };
1399
1400 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1401 .ops = &fimc_lite_ctrl_ops,
1402 .id = V4L2_CTRL_CLASS_USER | 0x1001,
1403 .type = V4L2_CTRL_TYPE_BOOLEAN,
1404 .name = "Test Pattern 640x480",
1405 .step = 1,
1406 };
1407
1408 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1409 {
1410 struct flite_frame *sink = &fimc->inp_frame;
1411 struct flite_frame *source = &fimc->out_frame;
1412
1413 sink->fmt = &fimc_lite_formats[0];
1414 sink->f_width = FLITE_DEFAULT_WIDTH;
1415 sink->f_height = FLITE_DEFAULT_HEIGHT;
1416
1417 sink->rect.width = FLITE_DEFAULT_WIDTH;
1418 sink->rect.height = FLITE_DEFAULT_HEIGHT;
1419 sink->rect.left = 0;
1420 sink->rect.top = 0;
1421
1422 *source = *sink;
1423 }
1424
1425 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1426 {
1427 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1428 struct v4l2_subdev *sd = &fimc->subdev;
1429 int ret;
1430
1431 v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1432 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1433 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1434
1435 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1436 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1437 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1438 ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM,
1439 fimc->subdev_pads, 0);
1440 if (ret)
1441 return ret;
1442
1443 v4l2_ctrl_handler_init(handler, 1);
1444 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1445 NULL);
1446 if (handler->error) {
1447 media_entity_cleanup(&sd->entity);
1448 return handler->error;
1449 }
1450
1451 sd->ctrl_handler = handler;
1452 sd->internal_ops = &fimc_lite_subdev_internal_ops;
1453 sd->entity.ops = &fimc_lite_subdev_media_ops;
1454 sd->owner = THIS_MODULE;
1455 v4l2_set_subdevdata(sd, fimc);
1456
1457 return 0;
1458 }
1459
1460 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1461 {
1462 struct v4l2_subdev *sd = &fimc->subdev;
1463
1464 v4l2_device_unregister_subdev(sd);
1465 media_entity_cleanup(&sd->entity);
1466 v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1467 v4l2_set_subdevdata(sd, NULL);
1468 }
1469
1470 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1471 {
1472 if (IS_ERR(fimc->clock))
1473 return;
1474
1475 clk_unprepare(fimc->clock);
1476 clk_put(fimc->clock);
1477 fimc->clock = ERR_PTR(-EINVAL);
1478 }
1479
1480 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1481 {
1482 int ret;
1483
1484 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1485 if (IS_ERR(fimc->clock))
1486 return PTR_ERR(fimc->clock);
1487
1488 ret = clk_prepare(fimc->clock);
1489 if (ret < 0) {
1490 clk_put(fimc->clock);
1491 fimc->clock = ERR_PTR(-EINVAL);
1492 }
1493 return ret;
1494 }
1495
1496 static const struct of_device_id flite_of_match[];
1497
1498 static int fimc_lite_probe(struct platform_device *pdev)
1499 {
1500 struct flite_drvdata *drv_data = NULL;
1501 struct device *dev = &pdev->dev;
1502 const struct of_device_id *of_id;
1503 struct fimc_lite *fimc;
1504 struct resource *res;
1505 int ret;
1506
1507 if (!dev->of_node)
1508 return -ENODEV;
1509
1510 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1511 if (!fimc)
1512 return -ENOMEM;
1513
1514 of_id = of_match_node(flite_of_match, dev->of_node);
1515 if (of_id)
1516 drv_data = (struct flite_drvdata *)of_id->data;
1517 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1518
1519 if (!drv_data || fimc->index >= drv_data->num_instances ||
1520 fimc->index < 0) {
1521 dev_err(dev, "Wrong %s node alias\n",
1522 dev->of_node->full_name);
1523 return -EINVAL;
1524 }
1525
1526 fimc->dd = drv_data;
1527 fimc->pdev = pdev;
1528
1529 init_waitqueue_head(&fimc->irq_queue);
1530 spin_lock_init(&fimc->slock);
1531 mutex_init(&fimc->lock);
1532
1533 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1534 fimc->regs = devm_ioremap_resource(dev, res);
1535 if (IS_ERR(fimc->regs))
1536 return PTR_ERR(fimc->regs);
1537
1538 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1539 if (res == NULL) {
1540 dev_err(dev, "Failed to get IRQ resource\n");
1541 return -ENXIO;
1542 }
1543
1544 ret = fimc_lite_clk_get(fimc);
1545 if (ret)
1546 return ret;
1547
1548 ret = devm_request_irq(dev, res->start, flite_irq_handler,
1549 0, dev_name(dev), fimc);
1550 if (ret) {
1551 dev_err(dev, "Failed to install irq (%d)\n", ret);
1552 goto err_clk_put;
1553 }
1554
1555 /* The video node will be created within the subdev's registered() op */
1556 ret = fimc_lite_create_capture_subdev(fimc);
1557 if (ret)
1558 goto err_clk_put;
1559
1560 platform_set_drvdata(pdev, fimc);
1561 pm_runtime_enable(dev);
1562
1563 if (!pm_runtime_enabled(dev)) {
1564 ret = clk_enable(fimc->clock);
1565 if (ret < 0)
1566 goto err_clk_put;
1567 }
1568
1569 fimc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
1570 if (IS_ERR(fimc->alloc_ctx)) {
1571 ret = PTR_ERR(fimc->alloc_ctx);
1572 goto err_clk_dis;
1573 }
1574
1575 fimc_lite_set_default_config(fimc);
1576
1577 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1578 fimc->index);
1579 return 0;
1580
1581 err_clk_dis:
1582 clk_disable(fimc->clock);
1583 err_sd:
1584 fimc_lite_unregister_capture_subdev(fimc);
1585 err_clk_put:
1586 fimc_lite_clk_put(fimc);
1587 return ret;
1588 }
1589
1590 static int fimc_lite_runtime_resume(struct device *dev)
1591 {
1592 struct fimc_lite *fimc = dev_get_drvdata(dev);
1593
1594 clk_enable(fimc->clock);
1595 return 0;
1596 }
1597
1598 static int fimc_lite_runtime_suspend(struct device *dev)
1599 {
1600 struct fimc_lite *fimc = dev_get_drvdata(dev);
1601
1602 clk_disable(fimc->clock);
1603 return 0;
1604 }
1605
1606 #ifdef CONFIG_PM_SLEEP
1607 static int fimc_lite_resume(struct device *dev)
1608 {
1609 struct fimc_lite *fimc = dev_get_drvdata(dev);
1610 struct flite_buffer *buf;
1611 unsigned long flags;
1612 int i;
1613
1614 spin_lock_irqsave(&fimc->slock, flags);
1615 if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1616 !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1617 spin_unlock_irqrestore(&fimc->slock, flags);
1618 return 0;
1619 }
1620 flite_hw_reset(fimc);
1621 spin_unlock_irqrestore(&fimc->slock, flags);
1622
1623 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1624 return 0;
1625
1626 INIT_LIST_HEAD(&fimc->active_buf_q);
1627 fimc_pipeline_call(&fimc->ve, open,
1628 &fimc->ve.vdev.entity, false);
1629 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1630 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1631
1632 for (i = 0; i < fimc->reqbufs_count; i++) {
1633 if (list_empty(&fimc->pending_buf_q))
1634 break;
1635 buf = fimc_lite_pending_queue_pop(fimc);
1636 buffer_queue(&buf->vb);
1637 }
1638 return 0;
1639 }
1640
1641 static int fimc_lite_suspend(struct device *dev)
1642 {
1643 struct fimc_lite *fimc = dev_get_drvdata(dev);
1644 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1645 int ret;
1646
1647 if (test_and_set_bit(ST_LPM, &fimc->state))
1648 return 0;
1649
1650 ret = fimc_lite_stop_capture(fimc, suspend);
1651 if (ret < 0 || !fimc_lite_active(fimc))
1652 return ret;
1653
1654 return fimc_pipeline_call(&fimc->ve, close);
1655 }
1656 #endif /* CONFIG_PM_SLEEP */
1657
1658 static int fimc_lite_remove(struct platform_device *pdev)
1659 {
1660 struct fimc_lite *fimc = platform_get_drvdata(pdev);
1661 struct device *dev = &pdev->dev;
1662
1663 pm_runtime_disable(dev);
1664 pm_runtime_set_suspended(dev);
1665 fimc_lite_unregister_capture_subdev(fimc);
1666 vb2_dma_contig_cleanup_ctx(fimc->alloc_ctx);
1667 fimc_lite_clk_put(fimc);
1668
1669 dev_info(dev, "Driver unloaded\n");
1670 return 0;
1671 }
1672
1673 static const struct dev_pm_ops fimc_lite_pm_ops = {
1674 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1675 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1676 NULL)
1677 };
1678
1679 /* EXYNOS4212, EXYNOS4412 */
1680 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1681 .max_width = 8192,
1682 .max_height = 8192,
1683 .out_width_align = 8,
1684 .win_hor_offs_align = 2,
1685 .out_hor_offs_align = 8,
1686 .max_dma_bufs = 1,
1687 .num_instances = 2,
1688 };
1689
1690 /* EXYNOS5250 */
1691 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1692 .max_width = 8192,
1693 .max_height = 8192,
1694 .out_width_align = 8,
1695 .win_hor_offs_align = 2,
1696 .out_hor_offs_align = 8,
1697 .max_dma_bufs = 32,
1698 .num_instances = 3,
1699 };
1700
1701 static const struct of_device_id flite_of_match[] = {
1702 {
1703 .compatible = "samsung,exynos4212-fimc-lite",
1704 .data = &fimc_lite_drvdata_exynos4,
1705 },
1706 {
1707 .compatible = "samsung,exynos5250-fimc-lite",
1708 .data = &fimc_lite_drvdata_exynos5,
1709 },
1710 { /* sentinel */ },
1711 };
1712 MODULE_DEVICE_TABLE(of, flite_of_match);
1713
1714 static struct platform_driver fimc_lite_driver = {
1715 .probe = fimc_lite_probe,
1716 .remove = fimc_lite_remove,
1717 .driver = {
1718 .of_match_table = flite_of_match,
1719 .name = FIMC_LITE_DRV_NAME,
1720 .owner = THIS_MODULE,
1721 .pm = &fimc_lite_pm_ops,
1722 }
1723 };
1724 module_platform_driver(fimc_lite_driver);
1725 MODULE_LICENSE("GPL");
1726 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
Linux kernel - Deliverables
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