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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / platform / exynos4-is / fimc-lite.c
blobfe20af3a7178afef2713bb213787ebb949617358
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung EXYNOS FIMC-LITE (camera host interface) driver
4 *
5 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
6 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
7 */
8 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
9
10 #include <linux/bug.h>
11 #include <linux/clk.h>
12 #include <linux/device.h>
13 #include <linux/errno.h>
14 #include <linux/interrupt.h>
15 #include <linux/kernel.h>
16 #include <linux/list.h>
17 #include <linux/module.h>
18 #include <linux/of.h>
19 #include <linux/types.h>
20 #include <linux/platform_device.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/slab.h>
23 #include <linux/videodev2.h>
24
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/v4l2-mem2mem.h>
28 #include <media/v4l2-rect.h>
29 #include <media/videobuf2-v4l2.h>
30 #include <media/videobuf2-dma-contig.h>
31 #include <media/drv-intf/exynos-fimc.h>
32
33 #include "common.h"
34 #include "fimc-core.h"
35 #include "fimc-lite.h"
36 #include "fimc-lite-reg.h"
37
38 static int debug;
39 module_param(debug, int, 0644);
40
41 static const struct fimc_fmt fimc_lite_formats[] = {
42 {
43 .fourcc = V4L2_PIX_FMT_YUYV,
44 .colorspace = V4L2_COLORSPACE_JPEG,
45 .depth = { 16 },
46 .color = FIMC_FMT_YCBYCR422,
47 .memplanes = 1,
48 .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
49 .flags = FMT_FLAGS_YUV,
50 }, {
51 .fourcc = V4L2_PIX_FMT_UYVY,
52 .colorspace = V4L2_COLORSPACE_JPEG,
53 .depth = { 16 },
54 .color = FIMC_FMT_CBYCRY422,
55 .memplanes = 1,
56 .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
57 .flags = FMT_FLAGS_YUV,
58 }, {
59 .fourcc = V4L2_PIX_FMT_VYUY,
60 .colorspace = V4L2_COLORSPACE_JPEG,
61 .depth = { 16 },
62 .color = FIMC_FMT_CRYCBY422,
63 .memplanes = 1,
64 .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
65 .flags = FMT_FLAGS_YUV,
66 }, {
67 .fourcc = V4L2_PIX_FMT_YVYU,
68 .colorspace = V4L2_COLORSPACE_JPEG,
69 .depth = { 16 },
70 .color = FIMC_FMT_YCRYCB422,
71 .memplanes = 1,
72 .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
73 .flags = FMT_FLAGS_YUV,
74 }, {
75 .fourcc = V4L2_PIX_FMT_SGRBG8,
76 .colorspace = V4L2_COLORSPACE_SRGB,
77 .depth = { 8 },
78 .color = FIMC_FMT_RAW8,
79 .memplanes = 1,
80 .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
81 .flags = FMT_FLAGS_RAW_BAYER,
82 }, {
83 .fourcc = V4L2_PIX_FMT_SGRBG10,
84 .colorspace = V4L2_COLORSPACE_SRGB,
85 .depth = { 16 },
86 .color = FIMC_FMT_RAW10,
87 .memplanes = 1,
88 .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
89 .flags = FMT_FLAGS_RAW_BAYER,
90 }, {
91 .fourcc = V4L2_PIX_FMT_SGRBG12,
92 .colorspace = V4L2_COLORSPACE_SRGB,
93 .depth = { 16 },
94 .color = FIMC_FMT_RAW12,
95 .memplanes = 1,
96 .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
97 .flags = FMT_FLAGS_RAW_BAYER,
98 },
99 };
100
101 /**
102 * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code
103 * @pixelformat: fourcc to match, ignored if null
104 * @mbus_code: media bus code to match, ignored if null
105 * @mask: the color format flags to match
106 * @index: index to the fimc_lite_formats array, ignored if negative
107 */
108 static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat,
109 const u32 *mbus_code, unsigned int mask, int index)
110 {
111 const struct fimc_fmt *fmt, *def_fmt = NULL;
112 unsigned int i;
113 int id = 0;
114
115 if (index >= (int)ARRAY_SIZE(fimc_lite_formats))
116 return NULL;
117
118 for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) {
119 fmt = &fimc_lite_formats[i];
120 if (mask && !(fmt->flags & mask))
121 continue;
122 if (pixelformat && fmt->fourcc == *pixelformat)
123 return fmt;
124 if (mbus_code && fmt->mbus_code == *mbus_code)
125 return fmt;
126 if (index == id)
127 def_fmt = fmt;
128 id++;
129 }
130 return def_fmt;
131 }
132
133 static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output)
134 {
135 struct fimc_source_info *si;
136 unsigned long flags;
137
138 if (fimc->sensor == NULL)
139 return -ENXIO;
140
141 if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL)
142 return -EINVAL;
143
144 /* Get sensor configuration data from the sensor subdev */
145 si = v4l2_get_subdev_hostdata(fimc->sensor);
146 if (!si)
147 return -EINVAL;
148
149 spin_lock_irqsave(&fimc->slock, flags);
150
151 flite_hw_set_camera_bus(fimc, si);
152 flite_hw_set_source_format(fimc, &fimc->inp_frame);
153 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
154 flite_hw_set_dma_buf_mask(fimc, 0);
155 flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output);
156 flite_hw_set_interrupt_mask(fimc);
157 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
158
159 if (debug > 0)
160 flite_hw_dump_regs(fimc, __func__);
161
162 spin_unlock_irqrestore(&fimc->slock, flags);
163 return 0;
164 }
165
166 /*
167 * Reinitialize the driver so it is ready to start the streaming again.
168 * Set fimc->state to indicate stream off and the hardware shut down state.
169 * If not suspending (@suspend is false), return any buffers to videobuf2.
170 * Otherwise put any owned buffers onto the pending buffers queue, so they
171 * can be re-spun when the device is being resumed. Also perform FIMC
172 * software reset and disable streaming on the whole pipeline if required.
173 */
174 static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend)
175 {
176 struct flite_buffer *buf;
177 unsigned long flags;
178 bool streaming;
179
180 spin_lock_irqsave(&fimc->slock, flags);
181 streaming = fimc->state & (1 << ST_SENSOR_STREAM);
182
183 fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF |
184 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM);
185 if (suspend)
186 fimc->state |= (1 << ST_FLITE_SUSPENDED);
187 else
188 fimc->state &= ~(1 << ST_FLITE_PENDING |
189 1 << ST_FLITE_SUSPENDED);
190
191 /* Release unused buffers */
192 while (!suspend && !list_empty(&fimc->pending_buf_q)) {
193 buf = fimc_lite_pending_queue_pop(fimc);
194 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
195 }
196 /* If suspending put unused buffers onto pending queue */
197 while (!list_empty(&fimc->active_buf_q)) {
198 buf = fimc_lite_active_queue_pop(fimc);
199 if (suspend)
200 fimc_lite_pending_queue_add(fimc, buf);
201 else
202 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
203 }
204
205 spin_unlock_irqrestore(&fimc->slock, flags);
206
207 flite_hw_reset(fimc);
208
209 if (!streaming)
210 return 0;
211
212 return fimc_pipeline_call(&fimc->ve, set_stream, 0);
213 }
214
215 static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
216 {
217 unsigned long flags;
218
219 if (!fimc_lite_active(fimc))
220 return 0;
221
222 spin_lock_irqsave(&fimc->slock, flags);
223 set_bit(ST_FLITE_OFF, &fimc->state);
224 flite_hw_capture_stop(fimc);
225 spin_unlock_irqrestore(&fimc->slock, flags);
226
227 wait_event_timeout(fimc->irq_queue,
228 !test_bit(ST_FLITE_OFF, &fimc->state),
229 (2*HZ/10)); /* 200 ms */
230
231 return fimc_lite_reinit(fimc, suspend);
232 }
233
234 /* Must be called with fimc.slock spinlock held. */
235 static void fimc_lite_config_update(struct fimc_lite *fimc)
236 {
237 flite_hw_set_window_offset(fimc, &fimc->inp_frame);
238 flite_hw_set_dma_window(fimc, &fimc->out_frame);
239 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
240 clear_bit(ST_FLITE_CONFIG, &fimc->state);
241 }
242
243 static irqreturn_t flite_irq_handler(int irq, void *priv)
244 {
245 struct fimc_lite *fimc = priv;
246 struct flite_buffer *vbuf;
247 unsigned long flags;
248 u32 intsrc;
249
250 spin_lock_irqsave(&fimc->slock, flags);
251
252 intsrc = flite_hw_get_interrupt_source(fimc);
253 flite_hw_clear_pending_irq(fimc);
254
255 if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) {
256 wake_up(&fimc->irq_queue);
257 goto done;
258 }
259
260 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) {
261 clear_bit(ST_FLITE_RUN, &fimc->state);
262 fimc->events.data_overflow++;
263 }
264
265 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) {
266 flite_hw_clear_last_capture_end(fimc);
267 clear_bit(ST_FLITE_STREAM, &fimc->state);
268 wake_up(&fimc->irq_queue);
269 }
270
271 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA)
272 goto done;
273
274 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) &&
275 test_bit(ST_FLITE_RUN, &fimc->state) &&
276 !list_empty(&fimc->pending_buf_q)) {
277 vbuf = fimc_lite_pending_queue_pop(fimc);
278 flite_hw_set_dma_buffer(fimc, vbuf);
279 fimc_lite_active_queue_add(fimc, vbuf);
280 }
281
282 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) &&
283 test_bit(ST_FLITE_RUN, &fimc->state) &&
284 !list_empty(&fimc->active_buf_q)) {
285 vbuf = fimc_lite_active_queue_pop(fimc);
286 vbuf->vb.vb2_buf.timestamp = ktime_get_ns();
287 vbuf->vb.sequence = fimc->frame_count++;
288 flite_hw_mask_dma_buffer(fimc, vbuf->index);
289 vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
290 }
291
292 if (test_bit(ST_FLITE_CONFIG, &fimc->state))
293 fimc_lite_config_update(fimc);
294
295 if (list_empty(&fimc->pending_buf_q)) {
296 flite_hw_capture_stop(fimc);
297 clear_bit(ST_FLITE_STREAM, &fimc->state);
298 }
299 done:
300 set_bit(ST_FLITE_RUN, &fimc->state);
301 spin_unlock_irqrestore(&fimc->slock, flags);
302 return IRQ_HANDLED;
303 }
304
305 static int start_streaming(struct vb2_queue *q, unsigned int count)
306 {
307 struct fimc_lite *fimc = q->drv_priv;
308 unsigned long flags;
309 int ret;
310
311 spin_lock_irqsave(&fimc->slock, flags);
312
313 fimc->buf_index = 0;
314 fimc->frame_count = 0;
315
316 spin_unlock_irqrestore(&fimc->slock, flags);
317
318 ret = fimc_lite_hw_init(fimc, false);
319 if (ret) {
320 fimc_lite_reinit(fimc, false);
321 return ret;
322 }
323
324 set_bit(ST_FLITE_PENDING, &fimc->state);
325
326 if (!list_empty(&fimc->active_buf_q) &&
327 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
328 flite_hw_capture_start(fimc);
329
330 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
331 fimc_pipeline_call(&fimc->ve, set_stream, 1);
332 }
333 if (debug > 0)
334 flite_hw_dump_regs(fimc, __func__);
335
336 return 0;
337 }
338
339 static void stop_streaming(struct vb2_queue *q)
340 {
341 struct fimc_lite *fimc = q->drv_priv;
342
343 if (!fimc_lite_active(fimc))
344 return;
345
346 fimc_lite_stop_capture(fimc, false);
347 }
348
349 static int queue_setup(struct vb2_queue *vq,
350 unsigned int *num_buffers, unsigned int *num_planes,
351 unsigned int sizes[], struct device *alloc_devs[])
352 {
353 struct fimc_lite *fimc = vq->drv_priv;
354 struct flite_frame *frame = &fimc->out_frame;
355 const struct fimc_fmt *fmt = frame->fmt;
356 unsigned long wh = frame->f_width * frame->f_height;
357 int i;
358
359 if (fmt == NULL)
360 return -EINVAL;
361
362 if (*num_planes) {
363 if (*num_planes != fmt->memplanes)
364 return -EINVAL;
365 for (i = 0; i < *num_planes; i++)
366 if (sizes[i] < (wh * fmt->depth[i]) / 8)
367 return -EINVAL;
368 return 0;
369 }
370
371 *num_planes = fmt->memplanes;
372
373 for (i = 0; i < fmt->memplanes; i++)
374 sizes[i] = (wh * fmt->depth[i]) / 8;
375
376 return 0;
377 }
378
379 static int buffer_prepare(struct vb2_buffer *vb)
380 {
381 struct vb2_queue *vq = vb->vb2_queue;
382 struct fimc_lite *fimc = vq->drv_priv;
383 int i;
384
385 if (fimc->out_frame.fmt == NULL)
386 return -EINVAL;
387
388 for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) {
389 unsigned long size = fimc->payload[i];
390
391 if (vb2_plane_size(vb, i) < size) {
392 v4l2_err(&fimc->ve.vdev,
393 "User buffer too small (%ld < %ld)\n",
394 vb2_plane_size(vb, i), size);
395 return -EINVAL;
396 }
397 vb2_set_plane_payload(vb, i, size);
398 }
399
400 return 0;
401 }
402
403 static void buffer_queue(struct vb2_buffer *vb)
404 {
405 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
406 struct flite_buffer *buf
407 = container_of(vbuf, struct flite_buffer, vb);
408 struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue);
409 unsigned long flags;
410
411 spin_lock_irqsave(&fimc->slock, flags);
412 buf->addr = vb2_dma_contig_plane_dma_addr(vb, 0);
413
414 buf->index = fimc->buf_index++;
415 if (fimc->buf_index >= fimc->reqbufs_count)
416 fimc->buf_index = 0;
417
418 if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
419 !test_bit(ST_FLITE_STREAM, &fimc->state) &&
420 list_empty(&fimc->active_buf_q)) {
421 flite_hw_set_dma_buffer(fimc, buf);
422 fimc_lite_active_queue_add(fimc, buf);
423 } else {
424 fimc_lite_pending_queue_add(fimc, buf);
425 }
426
427 if (vb2_is_streaming(&fimc->vb_queue) &&
428 !list_empty(&fimc->pending_buf_q) &&
429 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
430 flite_hw_capture_start(fimc);
431 spin_unlock_irqrestore(&fimc->slock, flags);
432
433 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
434 fimc_pipeline_call(&fimc->ve, set_stream, 1);
435 return;
436 }
437 spin_unlock_irqrestore(&fimc->slock, flags);
438 }
439
440 static const struct vb2_ops fimc_lite_qops = {
441 .queue_setup = queue_setup,
442 .buf_prepare = buffer_prepare,
443 .buf_queue = buffer_queue,
444 .wait_prepare = vb2_ops_wait_prepare,
445 .wait_finish = vb2_ops_wait_finish,
446 .start_streaming = start_streaming,
447 .stop_streaming = stop_streaming,
448 };
449
450 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
451 {
452 unsigned long flags;
453
454 spin_lock_irqsave(&fimc->slock, flags);
455 memset(&fimc->events, 0, sizeof(fimc->events));
456 spin_unlock_irqrestore(&fimc->slock, flags);
457 }
458
459 static int fimc_lite_open(struct file *file)
460 {
461 struct fimc_lite *fimc = video_drvdata(file);
462 struct media_entity *me = &fimc->ve.vdev.entity;
463 int ret;
464
465 mutex_lock(&fimc->lock);
466 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
467 ret = -EBUSY;
468 goto unlock;
469 }
470
471 set_bit(ST_FLITE_IN_USE, &fimc->state);
472 ret = pm_runtime_get_sync(&fimc->pdev->dev);
473 if (ret < 0)
474 goto err_pm;
475
476 ret = v4l2_fh_open(file);
477 if (ret < 0)
478 goto err_pm;
479
480 if (!v4l2_fh_is_singular_file(file) ||
481 atomic_read(&fimc->out_path) != FIMC_IO_DMA)
482 goto unlock;
483
484 mutex_lock(&me->graph_obj.mdev->graph_mutex);
485
486 ret = fimc_pipeline_call(&fimc->ve, open, me, true);
487
488 /* Mark video pipeline ending at this video node as in use. */
489 if (ret == 0)
490 me->use_count++;
491
492 mutex_unlock(&me->graph_obj.mdev->graph_mutex);
493
494 if (!ret) {
495 fimc_lite_clear_event_counters(fimc);
496 goto unlock;
497 }
498
499 v4l2_fh_release(file);
500 err_pm:
501 pm_runtime_put_sync(&fimc->pdev->dev);
502 clear_bit(ST_FLITE_IN_USE, &fimc->state);
503 unlock:
504 mutex_unlock(&fimc->lock);
505 return ret;
506 }
507
508 static int fimc_lite_release(struct file *file)
509 {
510 struct fimc_lite *fimc = video_drvdata(file);
511 struct media_entity *entity = &fimc->ve.vdev.entity;
512
513 mutex_lock(&fimc->lock);
514
515 if (v4l2_fh_is_singular_file(file) &&
516 atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
517 if (fimc->streaming) {
518 media_pipeline_stop(entity);
519 fimc->streaming = false;
520 }
521 fimc_lite_stop_capture(fimc, false);
522 fimc_pipeline_call(&fimc->ve, close);
523 clear_bit(ST_FLITE_IN_USE, &fimc->state);
524
525 mutex_lock(&entity->graph_obj.mdev->graph_mutex);
526 entity->use_count--;
527 mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
528 }
529
530 _vb2_fop_release(file, NULL);
531 pm_runtime_put(&fimc->pdev->dev);
532 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
533
534 mutex_unlock(&fimc->lock);
535 return 0;
536 }
537
538 static const struct v4l2_file_operations fimc_lite_fops = {
539 .owner = THIS_MODULE,
540 .open = fimc_lite_open,
541 .release = fimc_lite_release,
542 .poll = vb2_fop_poll,
543 .unlocked_ioctl = video_ioctl2,
544 .mmap = vb2_fop_mmap,
545 };
546
547 /*
548 * Format and crop negotiation helpers
549 */
550
551 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
552 struct v4l2_subdev_pad_config *cfg,
553 struct v4l2_subdev_format *format)
554 {
555 struct flite_drvdata *dd = fimc->dd;
556 struct v4l2_mbus_framefmt *mf = &format->format;
557 const struct fimc_fmt *fmt = NULL;
558
559 if (format->pad == FLITE_SD_PAD_SINK) {
560 v4l_bound_align_image(&mf->width, 8, dd->max_width,
561 ffs(dd->out_width_align) - 1,
562 &mf->height, 0, dd->max_height, 0, 0);
563
564 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
565 if (WARN_ON(!fmt))
566 return NULL;
567
568 mf->colorspace = fmt->colorspace;
569 mf->code = fmt->mbus_code;
570 } else {
571 struct flite_frame *sink = &fimc->inp_frame;
572 struct v4l2_mbus_framefmt *sink_fmt;
573 struct v4l2_rect *rect;
574
575 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
576 sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, cfg,
577 FLITE_SD_PAD_SINK);
578
579 mf->code = sink_fmt->code;
580 mf->colorspace = sink_fmt->colorspace;
581
582 rect = v4l2_subdev_get_try_crop(&fimc->subdev, cfg,
583 FLITE_SD_PAD_SINK);
584 } else {
585 mf->code = sink->fmt->mbus_code;
586 mf->colorspace = sink->fmt->colorspace;
587 rect = &sink->rect;
588 }
589
590 /* Allow changing format only on sink pad */
591 mf->width = rect->width;
592 mf->height = rect->height;
593 }
594
595 mf->field = V4L2_FIELD_NONE;
596
597 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
598 mf->code, mf->colorspace, mf->width, mf->height);
599
600 return fmt;
601 }
602
603 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
604 {
605 struct flite_frame *frame = &fimc->inp_frame;
606
607 v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
608 &r->height, 0, frame->f_height, 0, 0);
609
610 /* Adjust left/top if cropping rectangle got out of bounds */
611 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
612 r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
613 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
614
615 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
616 r->left, r->top, r->width, r->height,
617 frame->f_width, frame->f_height);
618 }
619
620 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
621 {
622 struct flite_frame *frame = &fimc->out_frame;
623 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
624
625 /* Scaling is not supported so we enforce compose rectangle size
626 same as size of the sink crop rectangle. */
627 r->width = crop_rect->width;
628 r->height = crop_rect->height;
629
630 /* Adjust left/top if the composing rectangle got out of bounds */
631 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
632 r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
633 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
634
635 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
636 r->left, r->top, r->width, r->height,
637 frame->f_width, frame->f_height);
638 }
639
640 /*
641 * Video node ioctl operations
642 */
643 static int fimc_lite_querycap(struct file *file, void *priv,
644 struct v4l2_capability *cap)
645 {
646 struct fimc_lite *fimc = video_drvdata(file);
647
648 strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
649 strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
650 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
651 dev_name(&fimc->pdev->dev));
652 return 0;
653 }
654
655 static int fimc_lite_enum_fmt(struct file *file, void *priv,
656 struct v4l2_fmtdesc *f)
657 {
658 const struct fimc_fmt *fmt;
659
660 if (f->index >= ARRAY_SIZE(fimc_lite_formats))
661 return -EINVAL;
662
663 fmt = &fimc_lite_formats[f->index];
664 f->pixelformat = fmt->fourcc;
665
666 return 0;
667 }
668
669 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
670 struct v4l2_format *f)
671 {
672 struct fimc_lite *fimc = video_drvdata(file);
673 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
674 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
675 struct flite_frame *frame = &fimc->out_frame;
676 const struct fimc_fmt *fmt = frame->fmt;
677
678 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
679 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
680
681 pixm->num_planes = fmt->memplanes;
682 pixm->pixelformat = fmt->fourcc;
683 pixm->width = frame->f_width;
684 pixm->height = frame->f_height;
685 pixm->field = V4L2_FIELD_NONE;
686 pixm->colorspace = fmt->colorspace;
687 return 0;
688 }
689
690 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
691 struct v4l2_pix_format_mplane *pixm,
692 const struct fimc_fmt **ffmt)
693 {
694 u32 bpl = pixm->plane_fmt[0].bytesperline;
695 struct flite_drvdata *dd = fimc->dd;
696 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
697 const struct fimc_fmt *fmt;
698
699 if (WARN_ON(inp_fmt == NULL))
700 return -EINVAL;
701 /*
702 * We allow some flexibility only for YUV formats. In case of raw
703 * raw Bayer the FIMC-LITE's output format must match its camera
704 * interface input format.
705 */
706 if (inp_fmt->flags & FMT_FLAGS_YUV)
707 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
708 inp_fmt->flags, 0);
709 else
710 fmt = inp_fmt;
711
712 if (WARN_ON(fmt == NULL))
713 return -EINVAL;
714 if (ffmt)
715 *ffmt = fmt;
716 v4l_bound_align_image(&pixm->width, 8, dd->max_width,
717 ffs(dd->out_width_align) - 1,
718 &pixm->height, 0, dd->max_height, 0, 0);
719
720 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
721 pixm->plane_fmt[0].bytesperline = (pixm->width *
722 fmt->depth[0]) / 8;
723
724 if (pixm->plane_fmt[0].sizeimage == 0)
725 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
726 fmt->depth[0]) / 8;
727 pixm->num_planes = fmt->memplanes;
728 pixm->pixelformat = fmt->fourcc;
729 pixm->colorspace = fmt->colorspace;
730 pixm->field = V4L2_FIELD_NONE;
731 return 0;
732 }
733
734 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
735 struct v4l2_format *f)
736 {
737 struct fimc_lite *fimc = video_drvdata(file);
738 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
739 }
740
741 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
742 struct v4l2_format *f)
743 {
744 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
745 struct fimc_lite *fimc = video_drvdata(file);
746 struct flite_frame *frame = &fimc->out_frame;
747 const struct fimc_fmt *fmt = NULL;
748 int ret;
749
750 if (vb2_is_busy(&fimc->vb_queue))
751 return -EBUSY;
752
753 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
754 if (ret < 0)
755 return ret;
756
757 frame->fmt = fmt;
758 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
759 pixm->plane_fmt[0].sizeimage);
760 frame->f_width = pixm->width;
761 frame->f_height = pixm->height;
762
763 return 0;
764 }
765
766 static int fimc_pipeline_validate(struct fimc_lite *fimc)
767 {
768 struct v4l2_subdev *sd = &fimc->subdev;
769 struct v4l2_subdev_format sink_fmt, src_fmt;
770 struct media_pad *pad;
771 int ret;
772
773 while (1) {
774 /* Retrieve format at the sink pad */
775 pad = &sd->entity.pads[0];
776 if (!(pad->flags & MEDIA_PAD_FL_SINK))
777 break;
778 /* Don't call FIMC subdev operation to avoid nested locking */
779 if (sd == &fimc->subdev) {
780 struct flite_frame *ff = &fimc->out_frame;
781 sink_fmt.format.width = ff->f_width;
782 sink_fmt.format.height = ff->f_height;
783 sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
784 } else {
785 sink_fmt.pad = pad->index;
786 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
787 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
788 &sink_fmt);
789 if (ret < 0 && ret != -ENOIOCTLCMD)
790 return -EPIPE;
791 }
792 /* Retrieve format at the source pad */
793 pad = media_entity_remote_pad(pad);
794 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
795 break;
796
797 sd = media_entity_to_v4l2_subdev(pad->entity);
798 src_fmt.pad = pad->index;
799 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
800 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
801 if (ret < 0 && ret != -ENOIOCTLCMD)
802 return -EPIPE;
803
804 if (src_fmt.format.width != sink_fmt.format.width ||
805 src_fmt.format.height != sink_fmt.format.height ||
806 src_fmt.format.code != sink_fmt.format.code)
807 return -EPIPE;
808 }
809 return 0;
810 }
811
812 static int fimc_lite_streamon(struct file *file, void *priv,
813 enum v4l2_buf_type type)
814 {
815 struct fimc_lite *fimc = video_drvdata(file);
816 struct media_entity *entity = &fimc->ve.vdev.entity;
817 int ret;
818
819 if (fimc_lite_active(fimc))
820 return -EBUSY;
821
822 ret = media_pipeline_start(entity, &fimc->ve.pipe->mp);
823 if (ret < 0)
824 return ret;
825
826 ret = fimc_pipeline_validate(fimc);
827 if (ret < 0)
828 goto err_p_stop;
829
830 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
831
832 ret = vb2_ioctl_streamon(file, priv, type);
833 if (!ret) {
834 fimc->streaming = true;
835 return ret;
836 }
837
838 err_p_stop:
839 media_pipeline_stop(entity);
840 return 0;
841 }
842
843 static int fimc_lite_streamoff(struct file *file, void *priv,
844 enum v4l2_buf_type type)
845 {
846 struct fimc_lite *fimc = video_drvdata(file);
847 int ret;
848
849 ret = vb2_ioctl_streamoff(file, priv, type);
850 if (ret < 0)
851 return ret;
852
853 media_pipeline_stop(&fimc->ve.vdev.entity);
854 fimc->streaming = false;
855 return 0;
856 }
857
858 static int fimc_lite_reqbufs(struct file *file, void *priv,
859 struct v4l2_requestbuffers *reqbufs)
860 {
861 struct fimc_lite *fimc = video_drvdata(file);
862 int ret;
863
864 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
865 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
866 if (!ret)
867 fimc->reqbufs_count = reqbufs->count;
868
869 return ret;
870 }
871
872 static int fimc_lite_g_selection(struct file *file, void *fh,
873 struct v4l2_selection *sel)
874 {
875 struct fimc_lite *fimc = video_drvdata(file);
876 struct flite_frame *f = &fimc->out_frame;
877
878 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
879 return -EINVAL;
880
881 switch (sel->target) {
882 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
883 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
884 sel->r.left = 0;
885 sel->r.top = 0;
886 sel->r.width = f->f_width;
887 sel->r.height = f->f_height;
888 return 0;
889
890 case V4L2_SEL_TGT_COMPOSE:
891 sel->r = f->rect;
892 return 0;
893 }
894
895 return -EINVAL;
896 }
897
898 static int fimc_lite_s_selection(struct file *file, void *fh,
899 struct v4l2_selection *sel)
900 {
901 struct fimc_lite *fimc = video_drvdata(file);
902 struct flite_frame *f = &fimc->out_frame;
903 struct v4l2_rect rect = sel->r;
904 unsigned long flags;
905
906 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
907 sel->target != V4L2_SEL_TGT_COMPOSE)
908 return -EINVAL;
909
910 fimc_lite_try_compose(fimc, &rect);
911
912 if ((sel->flags & V4L2_SEL_FLAG_LE) &&
913 !v4l2_rect_enclosed(&rect, &sel->r))
914 return -ERANGE;
915
916 if ((sel->flags & V4L2_SEL_FLAG_GE) &&
917 !v4l2_rect_enclosed(&sel->r, &rect))
918 return -ERANGE;
919
920 sel->r = rect;
921 spin_lock_irqsave(&fimc->slock, flags);
922 f->rect = rect;
923 set_bit(ST_FLITE_CONFIG, &fimc->state);
924 spin_unlock_irqrestore(&fimc->slock, flags);
925
926 return 0;
927 }
928
929 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
930 .vidioc_querycap = fimc_lite_querycap,
931 .vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt,
932 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
933 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
934 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
935 .vidioc_g_selection = fimc_lite_g_selection,
936 .vidioc_s_selection = fimc_lite_s_selection,
937 .vidioc_reqbufs = fimc_lite_reqbufs,
938 .vidioc_querybuf = vb2_ioctl_querybuf,
939 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
940 .vidioc_create_bufs = vb2_ioctl_create_bufs,
941 .vidioc_qbuf = vb2_ioctl_qbuf,
942 .vidioc_dqbuf = vb2_ioctl_dqbuf,
943 .vidioc_streamon = fimc_lite_streamon,
944 .vidioc_streamoff = fimc_lite_streamoff,
945 };
946
947 /* Capture subdev media entity operations */
948 static int fimc_lite_link_setup(struct media_entity *entity,
949 const struct media_pad *local,
950 const struct media_pad *remote, u32 flags)
951 {
952 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
953 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
954 int ret = 0;
955
956 if (WARN_ON(fimc == NULL))
957 return 0;
958
959 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
960 __func__, remote->entity->name, local->entity->name,
961 flags, fimc->source_subdev_grp_id);
962
963 switch (local->index) {
964 case FLITE_SD_PAD_SINK:
965 if (flags & MEDIA_LNK_FL_ENABLED) {
966 if (fimc->source_subdev_grp_id == 0)
967 fimc->source_subdev_grp_id = sd->grp_id;
968 else
969 ret = -EBUSY;
970 } else {
971 fimc->source_subdev_grp_id = 0;
972 fimc->sensor = NULL;
973 }
974 break;
975
976 case FLITE_SD_PAD_SOURCE_DMA:
977 if (!(flags & MEDIA_LNK_FL_ENABLED))
978 atomic_set(&fimc->out_path, FIMC_IO_NONE);
979 else
980 atomic_set(&fimc->out_path, FIMC_IO_DMA);
981 break;
982
983 case FLITE_SD_PAD_SOURCE_ISP:
984 if (!(flags & MEDIA_LNK_FL_ENABLED))
985 atomic_set(&fimc->out_path, FIMC_IO_NONE);
986 else
987 atomic_set(&fimc->out_path, FIMC_IO_ISP);
988 break;
989
990 default:
991 v4l2_err(sd, "Invalid pad index\n");
992 ret = -EINVAL;
993 }
994 mb();
995
996 return ret;
997 }
998
999 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
1000 .link_setup = fimc_lite_link_setup,
1001 };
1002
1003 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1004 struct v4l2_subdev_pad_config *cfg,
1005 struct v4l2_subdev_mbus_code_enum *code)
1006 {
1007 const struct fimc_fmt *fmt;
1008
1009 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1010 if (!fmt)
1011 return -EINVAL;
1012 code->code = fmt->mbus_code;
1013 return 0;
1014 }
1015
1016 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1017 struct v4l2_subdev *sd,
1018 struct v4l2_subdev_pad_config *cfg, unsigned int pad)
1019 {
1020 if (pad != FLITE_SD_PAD_SINK)
1021 pad = FLITE_SD_PAD_SOURCE_DMA;
1022
1023 return v4l2_subdev_get_try_format(sd, cfg, pad);
1024 }
1025
1026 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1027 struct v4l2_subdev_pad_config *cfg,
1028 struct v4l2_subdev_format *fmt)
1029 {
1030 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1031 struct v4l2_mbus_framefmt *mf = &fmt->format;
1032 struct flite_frame *f = &fimc->inp_frame;
1033
1034 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1035 mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
1036 fmt->format = *mf;
1037 return 0;
1038 }
1039
1040 mutex_lock(&fimc->lock);
1041 mf->colorspace = f->fmt->colorspace;
1042 mf->code = f->fmt->mbus_code;
1043
1044 if (fmt->pad == FLITE_SD_PAD_SINK) {
1045 /* full camera input frame size */
1046 mf->width = f->f_width;
1047 mf->height = f->f_height;
1048 } else {
1049 /* crop size */
1050 mf->width = f->rect.width;
1051 mf->height = f->rect.height;
1052 }
1053 mutex_unlock(&fimc->lock);
1054 return 0;
1055 }
1056
1057 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1058 struct v4l2_subdev_pad_config *cfg,
1059 struct v4l2_subdev_format *fmt)
1060 {
1061 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1062 struct v4l2_mbus_framefmt *mf = &fmt->format;
1063 struct flite_frame *sink = &fimc->inp_frame;
1064 struct flite_frame *source = &fimc->out_frame;
1065 const struct fimc_fmt *ffmt;
1066
1067 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1068 fmt->pad, mf->code, mf->width, mf->height);
1069
1070 mutex_lock(&fimc->lock);
1071
1072 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1073 sd->entity.stream_count > 0) ||
1074 (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1075 vb2_is_busy(&fimc->vb_queue))) {
1076 mutex_unlock(&fimc->lock);
1077 return -EBUSY;
1078 }
1079
1080 ffmt = fimc_lite_subdev_try_fmt(fimc, cfg, fmt);
1081
1082 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1083 struct v4l2_mbus_framefmt *src_fmt;
1084
1085 mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
1086 *mf = fmt->format;
1087
1088 if (fmt->pad == FLITE_SD_PAD_SINK) {
1089 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1090 src_fmt = __fimc_lite_subdev_get_try_fmt(sd, cfg, pad);
1091 *src_fmt = *mf;
1092 }
1093
1094 mutex_unlock(&fimc->lock);
1095 return 0;
1096 }
1097
1098 if (fmt->pad == FLITE_SD_PAD_SINK) {
1099 sink->f_width = mf->width;
1100 sink->f_height = mf->height;
1101 sink->fmt = ffmt;
1102 /* Set sink crop rectangle */
1103 sink->rect.width = mf->width;
1104 sink->rect.height = mf->height;
1105 sink->rect.left = 0;
1106 sink->rect.top = 0;
1107 /* Reset source format and crop rectangle */
1108 source->rect = sink->rect;
1109 source->f_width = mf->width;
1110 source->f_height = mf->height;
1111 }
1112
1113 mutex_unlock(&fimc->lock);
1114 return 0;
1115 }
1116
1117 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1118 struct v4l2_subdev_pad_config *cfg,
1119 struct v4l2_subdev_selection *sel)
1120 {
1121 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1122 struct flite_frame *f = &fimc->inp_frame;
1123
1124 if ((sel->target != V4L2_SEL_TGT_CROP &&
1125 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1126 sel->pad != FLITE_SD_PAD_SINK)
1127 return -EINVAL;
1128
1129 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1130 sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1131 return 0;
1132 }
1133
1134 mutex_lock(&fimc->lock);
1135 if (sel->target == V4L2_SEL_TGT_CROP) {
1136 sel->r = f->rect;
1137 } else {
1138 sel->r.left = 0;
1139 sel->r.top = 0;
1140 sel->r.width = f->f_width;
1141 sel->r.height = f->f_height;
1142 }
1143 mutex_unlock(&fimc->lock);
1144
1145 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1146 __func__, f->rect.left, f->rect.top, f->rect.width,
1147 f->rect.height, f->f_width, f->f_height);
1148
1149 return 0;
1150 }
1151
1152 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1153 struct v4l2_subdev_pad_config *cfg,
1154 struct v4l2_subdev_selection *sel)
1155 {
1156 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1157 struct flite_frame *f = &fimc->inp_frame;
1158 int ret = 0;
1159
1160 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1161 return -EINVAL;
1162
1163 mutex_lock(&fimc->lock);
1164 fimc_lite_try_crop(fimc, &sel->r);
1165
1166 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1167 *v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r;
1168 } else {
1169 unsigned long flags;
1170 spin_lock_irqsave(&fimc->slock, flags);
1171 f->rect = sel->r;
1172 /* Same crop rectangle on the source pad */
1173 fimc->out_frame.rect = sel->r;
1174 set_bit(ST_FLITE_CONFIG, &fimc->state);
1175 spin_unlock_irqrestore(&fimc->slock, flags);
1176 }
1177 mutex_unlock(&fimc->lock);
1178
1179 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1180 __func__, f->rect.left, f->rect.top, f->rect.width,
1181 f->rect.height, f->f_width, f->f_height);
1182
1183 return ret;
1184 }
1185
1186 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1187 {
1188 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1189 unsigned long flags;
1190 int ret;
1191
1192 /*
1193 * Find sensor subdev linked to FIMC-LITE directly or through
1194 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1195 * is used as a subdev only and feeds data internally to FIMC-IS.
1196 * The pipeline links are protected through entity.stream_count
1197 * so there is no need to take the media graph mutex here.
1198 */
1199 fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1200
1201 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1202 return -ENOIOCTLCMD;
1203
1204 mutex_lock(&fimc->lock);
1205 if (on) {
1206 flite_hw_reset(fimc);
1207 ret = fimc_lite_hw_init(fimc, true);
1208 if (!ret) {
1209 spin_lock_irqsave(&fimc->slock, flags);
1210 flite_hw_capture_start(fimc);
1211 spin_unlock_irqrestore(&fimc->slock, flags);
1212 }
1213 } else {
1214 set_bit(ST_FLITE_OFF, &fimc->state);
1215
1216 spin_lock_irqsave(&fimc->slock, flags);
1217 flite_hw_capture_stop(fimc);
1218 spin_unlock_irqrestore(&fimc->slock, flags);
1219
1220 ret = wait_event_timeout(fimc->irq_queue,
1221 !test_bit(ST_FLITE_OFF, &fimc->state),
1222 msecs_to_jiffies(200));
1223 if (ret == 0)
1224 v4l2_err(sd, "s_stream(0) timeout\n");
1225 clear_bit(ST_FLITE_RUN, &fimc->state);
1226 }
1227
1228 mutex_unlock(&fimc->lock);
1229 return ret;
1230 }
1231
1232 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1233 {
1234 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1235
1236 flite_hw_dump_regs(fimc, __func__);
1237 return 0;
1238 }
1239
1240 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1241 {
1242 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1243 struct vb2_queue *q = &fimc->vb_queue;
1244 struct video_device *vfd = &fimc->ve.vdev;
1245 int ret;
1246
1247 memset(vfd, 0, sizeof(*vfd));
1248 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1249
1250 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1251 fimc->index);
1252
1253 vfd->fops = &fimc_lite_fops;
1254 vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1255 vfd->v4l2_dev = sd->v4l2_dev;
1256 vfd->minor = -1;
1257 vfd->release = video_device_release_empty;
1258 vfd->queue = q;
1259 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
1260 fimc->reqbufs_count = 0;
1261
1262 INIT_LIST_HEAD(&fimc->pending_buf_q);
1263 INIT_LIST_HEAD(&fimc->active_buf_q);
1264
1265 memset(q, 0, sizeof(*q));
1266 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1267 q->io_modes = VB2_MMAP | VB2_USERPTR;
1268 q->ops = &fimc_lite_qops;
1269 q->mem_ops = &vb2_dma_contig_memops;
1270 q->buf_struct_size = sizeof(struct flite_buffer);
1271 q->drv_priv = fimc;
1272 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1273 q->lock = &fimc->lock;
1274 q->dev = &fimc->pdev->dev;
1275
1276 ret = vb2_queue_init(q);
1277 if (ret < 0)
1278 return ret;
1279
1280 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1281 ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
1282 if (ret < 0)
1283 return ret;
1284
1285 video_set_drvdata(vfd, fimc);
1286 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1287
1288 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1289 if (ret < 0) {
1290 media_entity_cleanup(&vfd->entity);
1291 fimc->ve.pipe = NULL;
1292 return ret;
1293 }
1294
1295 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1296 vfd->name, video_device_node_name(vfd));
1297 return 0;
1298 }
1299
1300 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1301 {
1302 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1303
1304 if (fimc == NULL)
1305 return;
1306
1307 mutex_lock(&fimc->lock);
1308
1309 if (video_is_registered(&fimc->ve.vdev)) {
1310 video_unregister_device(&fimc->ve.vdev);
1311 media_entity_cleanup(&fimc->ve.vdev.entity);
1312 fimc->ve.pipe = NULL;
1313 }
1314
1315 mutex_unlock(&fimc->lock);
1316 }
1317
1318 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1319 .registered = fimc_lite_subdev_registered,
1320 .unregistered = fimc_lite_subdev_unregistered,
1321 };
1322
1323 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1324 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1325 .get_selection = fimc_lite_subdev_get_selection,
1326 .set_selection = fimc_lite_subdev_set_selection,
1327 .get_fmt = fimc_lite_subdev_get_fmt,
1328 .set_fmt = fimc_lite_subdev_set_fmt,
1329 };
1330
1331 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1332 .s_stream = fimc_lite_subdev_s_stream,
1333 };
1334
1335 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1336 .log_status = fimc_lite_log_status,
1337 };
1338
1339 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1340 .core = &fimc_lite_core_ops,
1341 .video = &fimc_lite_subdev_video_ops,
1342 .pad = &fimc_lite_subdev_pad_ops,
1343 };
1344
1345 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1346 {
1347 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1348 ctrl_handler);
1349 set_bit(ST_FLITE_CONFIG, &fimc->state);
1350 return 0;
1351 }
1352
1353 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1354 .s_ctrl = fimc_lite_s_ctrl,
1355 };
1356
1357 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1358 .ops = &fimc_lite_ctrl_ops,
1359 .id = V4L2_CTRL_CLASS_USER | 0x1001,
1360 .type = V4L2_CTRL_TYPE_BOOLEAN,
1361 .name = "Test Pattern 640x480",
1362 .step = 1,
1363 };
1364
1365 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1366 {
1367 struct flite_frame *sink = &fimc->inp_frame;
1368 struct flite_frame *source = &fimc->out_frame;
1369
1370 sink->fmt = &fimc_lite_formats[0];
1371 sink->f_width = FLITE_DEFAULT_WIDTH;
1372 sink->f_height = FLITE_DEFAULT_HEIGHT;
1373
1374 sink->rect.width = FLITE_DEFAULT_WIDTH;
1375 sink->rect.height = FLITE_DEFAULT_HEIGHT;
1376 sink->rect.left = 0;
1377 sink->rect.top = 0;
1378
1379 *source = *sink;
1380 }
1381
1382 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1383 {
1384 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1385 struct v4l2_subdev *sd = &fimc->subdev;
1386 int ret;
1387
1388 v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1389 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1390 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1391
1392 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1393 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1394 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1395 ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
1396 fimc->subdev_pads);
1397 if (ret)
1398 return ret;
1399
1400 v4l2_ctrl_handler_init(handler, 1);
1401 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1402 NULL);
1403 if (handler->error) {
1404 media_entity_cleanup(&sd->entity);
1405 return handler->error;
1406 }
1407
1408 sd->ctrl_handler = handler;
1409 sd->internal_ops = &fimc_lite_subdev_internal_ops;
1410 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1411 sd->entity.ops = &fimc_lite_subdev_media_ops;
1412 sd->owner = THIS_MODULE;
1413 v4l2_set_subdevdata(sd, fimc);
1414
1415 return 0;
1416 }
1417
1418 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1419 {
1420 struct v4l2_subdev *sd = &fimc->subdev;
1421
1422 v4l2_device_unregister_subdev(sd);
1423 media_entity_cleanup(&sd->entity);
1424 v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1425 v4l2_set_subdevdata(sd, NULL);
1426 }
1427
1428 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1429 {
1430 if (IS_ERR(fimc->clock))
1431 return;
1432
1433 clk_put(fimc->clock);
1434 fimc->clock = ERR_PTR(-EINVAL);
1435 }
1436
1437 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1438 {
1439 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1440 return PTR_ERR_OR_ZERO(fimc->clock);
1441 }
1442
1443 static const struct of_device_id flite_of_match[];
1444
1445 static int fimc_lite_probe(struct platform_device *pdev)
1446 {
1447 struct flite_drvdata *drv_data = NULL;
1448 struct device *dev = &pdev->dev;
1449 const struct of_device_id *of_id;
1450 struct fimc_lite *fimc;
1451 struct resource *res;
1452 int ret;
1453
1454 if (!dev->of_node)
1455 return -ENODEV;
1456
1457 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1458 if (!fimc)
1459 return -ENOMEM;
1460
1461 of_id = of_match_node(flite_of_match, dev->of_node);
1462 if (of_id)
1463 drv_data = (struct flite_drvdata *)of_id->data;
1464 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1465
1466 if (!drv_data || fimc->index >= drv_data->num_instances ||
1467 fimc->index < 0) {
1468 dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
1469 return -EINVAL;
1470 }
1471
1472 fimc->dd = drv_data;
1473 fimc->pdev = pdev;
1474
1475 init_waitqueue_head(&fimc->irq_queue);
1476 spin_lock_init(&fimc->slock);
1477 mutex_init(&fimc->lock);
1478
1479 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1480 fimc->regs = devm_ioremap_resource(dev, res);
1481 if (IS_ERR(fimc->regs))
1482 return PTR_ERR(fimc->regs);
1483
1484 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1485 if (res == NULL) {
1486 dev_err(dev, "Failed to get IRQ resource\n");
1487 return -ENXIO;
1488 }
1489
1490 ret = fimc_lite_clk_get(fimc);
1491 if (ret)
1492 return ret;
1493
1494 ret = devm_request_irq(dev, res->start, flite_irq_handler,
1495 0, dev_name(dev), fimc);
1496 if (ret) {
1497 dev_err(dev, "Failed to install irq (%d)\n", ret);
1498 goto err_clk_put;
1499 }
1500
1501 /* The video node will be created within the subdev's registered() op */
1502 ret = fimc_lite_create_capture_subdev(fimc);
1503 if (ret)
1504 goto err_clk_put;
1505
1506 platform_set_drvdata(pdev, fimc);
1507 pm_runtime_enable(dev);
1508
1509 if (!pm_runtime_enabled(dev)) {
1510 ret = clk_prepare_enable(fimc->clock);
1511 if (ret < 0)
1512 goto err_sd;
1513 }
1514
1515 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1516
1517 fimc_lite_set_default_config(fimc);
1518
1519 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1520 fimc->index);
1521 return 0;
1522
1523 err_sd:
1524 fimc_lite_unregister_capture_subdev(fimc);
1525 err_clk_put:
1526 fimc_lite_clk_put(fimc);
1527 return ret;
1528 }
1529
1530 #ifdef CONFIG_PM
1531 static int fimc_lite_runtime_resume(struct device *dev)
1532 {
1533 struct fimc_lite *fimc = dev_get_drvdata(dev);
1534
1535 clk_prepare_enable(fimc->clock);
1536 return 0;
1537 }
1538
1539 static int fimc_lite_runtime_suspend(struct device *dev)
1540 {
1541 struct fimc_lite *fimc = dev_get_drvdata(dev);
1542
1543 clk_disable_unprepare(fimc->clock);
1544 return 0;
1545 }
1546 #endif
1547
1548 #ifdef CONFIG_PM_SLEEP
1549 static int fimc_lite_resume(struct device *dev)
1550 {
1551 struct fimc_lite *fimc = dev_get_drvdata(dev);
1552 struct flite_buffer *buf;
1553 unsigned long flags;
1554 int i;
1555
1556 spin_lock_irqsave(&fimc->slock, flags);
1557 if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1558 !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1559 spin_unlock_irqrestore(&fimc->slock, flags);
1560 return 0;
1561 }
1562 flite_hw_reset(fimc);
1563 spin_unlock_irqrestore(&fimc->slock, flags);
1564
1565 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1566 return 0;
1567
1568 INIT_LIST_HEAD(&fimc->active_buf_q);
1569 fimc_pipeline_call(&fimc->ve, open,
1570 &fimc->ve.vdev.entity, false);
1571 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1572 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1573
1574 for (i = 0; i < fimc->reqbufs_count; i++) {
1575 if (list_empty(&fimc->pending_buf_q))
1576 break;
1577 buf = fimc_lite_pending_queue_pop(fimc);
1578 buffer_queue(&buf->vb.vb2_buf);
1579 }
1580 return 0;
1581 }
1582
1583 static int fimc_lite_suspend(struct device *dev)
1584 {
1585 struct fimc_lite *fimc = dev_get_drvdata(dev);
1586 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1587 int ret;
1588
1589 if (test_and_set_bit(ST_LPM, &fimc->state))
1590 return 0;
1591
1592 ret = fimc_lite_stop_capture(fimc, suspend);
1593 if (ret < 0 || !fimc_lite_active(fimc))
1594 return ret;
1595
1596 return fimc_pipeline_call(&fimc->ve, close);
1597 }
1598 #endif /* CONFIG_PM_SLEEP */
1599
1600 static int fimc_lite_remove(struct platform_device *pdev)
1601 {
1602 struct fimc_lite *fimc = platform_get_drvdata(pdev);
1603 struct device *dev = &pdev->dev;
1604
1605 if (!pm_runtime_enabled(dev))
1606 clk_disable_unprepare(fimc->clock);
1607
1608 pm_runtime_disable(dev);
1609 pm_runtime_set_suspended(dev);
1610 fimc_lite_unregister_capture_subdev(fimc);
1611 vb2_dma_contig_clear_max_seg_size(dev);
1612 fimc_lite_clk_put(fimc);
1613
1614 dev_info(dev, "Driver unloaded\n");
1615 return 0;
1616 }
1617
1618 static const struct dev_pm_ops fimc_lite_pm_ops = {
1619 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1620 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1621 NULL)
1622 };
1623
1624 /* EXYNOS4412 */
1625 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1626 .max_width = 8192,
1627 .max_height = 8192,
1628 .out_width_align = 8,
1629 .win_hor_offs_align = 2,
1630 .out_hor_offs_align = 8,
1631 .max_dma_bufs = 1,
1632 .num_instances = 2,
1633 };
1634
1635 /* EXYNOS5250 */
1636 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1637 .max_width = 8192,
1638 .max_height = 8192,
1639 .out_width_align = 8,
1640 .win_hor_offs_align = 2,
1641 .out_hor_offs_align = 8,
1642 .max_dma_bufs = 32,
1643 .num_instances = 3,
1644 };
1645
1646 static const struct of_device_id flite_of_match[] = {
1647 {
1648 .compatible = "samsung,exynos4212-fimc-lite",
1649 .data = &fimc_lite_drvdata_exynos4,
1650 },
1651 {
1652 .compatible = "samsung,exynos5250-fimc-lite",
1653 .data = &fimc_lite_drvdata_exynos5,
1654 },
1655 { /* sentinel */ },
1656 };
1657 MODULE_DEVICE_TABLE(of, flite_of_match);
1658
1659 static struct platform_driver fimc_lite_driver = {
1660 .probe = fimc_lite_probe,
1661 .remove = fimc_lite_remove,
1662 .driver = {
1663 .of_match_table = flite_of_match,
1664 .name = FIMC_LITE_DRV_NAME,
1665 .pm = &fimc_lite_pm_ops,
1666 }
1667 };
1668 module_platform_driver(fimc_lite_driver);
1669 MODULE_LICENSE("GPL");
1670 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
Linux with added FPC-III support