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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / media / platform / samsung / exynos4-is / fimc-lite.c
blobf23e51e3da2fe520683a556b2e912e1e3cedff95
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 .start_streaming = start_streaming,
445 .stop_streaming = stop_streaming,
446 };
447
448 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
449 {
450 unsigned long flags;
451
452 spin_lock_irqsave(&fimc->slock, flags);
453 memset(&fimc->events, 0, sizeof(fimc->events));
454 spin_unlock_irqrestore(&fimc->slock, flags);
455 }
456
457 static int fimc_lite_open(struct file *file)
458 {
459 struct fimc_lite *fimc = video_drvdata(file);
460 struct media_entity *me = &fimc->ve.vdev.entity;
461 int ret;
462
463 mutex_lock(&fimc->lock);
464 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
465 ret = -EBUSY;
466 goto unlock;
467 }
468
469 set_bit(ST_FLITE_IN_USE, &fimc->state);
470 ret = pm_runtime_resume_and_get(&fimc->pdev->dev);
471 if (ret < 0)
472 goto err_in_use;
473
474 ret = v4l2_fh_open(file);
475 if (ret < 0)
476 goto err_pm;
477
478 if (!v4l2_fh_is_singular_file(file) ||
479 atomic_read(&fimc->out_path) != FIMC_IO_DMA)
480 goto unlock;
481
482 mutex_lock(&me->graph_obj.mdev->graph_mutex);
483
484 ret = fimc_pipeline_call(&fimc->ve, open, me, true);
485
486 /* Mark video pipeline ending at this video node as in use. */
487 if (ret == 0)
488 me->use_count++;
489
490 mutex_unlock(&me->graph_obj.mdev->graph_mutex);
491
492 if (!ret) {
493 fimc_lite_clear_event_counters(fimc);
494 goto unlock;
495 }
496
497 v4l2_fh_release(file);
498 err_pm:
499 pm_runtime_put_sync(&fimc->pdev->dev);
500 err_in_use:
501 clear_bit(ST_FLITE_IN_USE, &fimc->state);
502 unlock:
503 mutex_unlock(&fimc->lock);
504 return ret;
505 }
506
507 static int fimc_lite_release(struct file *file)
508 {
509 struct fimc_lite *fimc = video_drvdata(file);
510 struct media_entity *entity = &fimc->ve.vdev.entity;
511
512 mutex_lock(&fimc->lock);
513
514 if (v4l2_fh_is_singular_file(file) &&
515 atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
516 if (fimc->streaming) {
517 video_device_pipeline_stop(&fimc->ve.vdev);
518 fimc->streaming = false;
519 }
520 fimc_lite_stop_capture(fimc, false);
521 fimc_pipeline_call(&fimc->ve, close);
522 clear_bit(ST_FLITE_IN_USE, &fimc->state);
523
524 mutex_lock(&entity->graph_obj.mdev->graph_mutex);
525 entity->use_count--;
526 mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
527 }
528
529 _vb2_fop_release(file, NULL);
530 pm_runtime_put(&fimc->pdev->dev);
531 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
532
533 mutex_unlock(&fimc->lock);
534 return 0;
535 }
536
537 static const struct v4l2_file_operations fimc_lite_fops = {
538 .owner = THIS_MODULE,
539 .open = fimc_lite_open,
540 .release = fimc_lite_release,
541 .poll = vb2_fop_poll,
542 .unlocked_ioctl = video_ioctl2,
543 .mmap = vb2_fop_mmap,
544 };
545
546 /*
547 * Format and crop negotiation helpers
548 */
549
550 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
551 struct v4l2_subdev_state *sd_state,
552 struct v4l2_subdev_format *format)
553 {
554 struct flite_drvdata *dd = fimc->dd;
555 struct v4l2_mbus_framefmt *mf = &format->format;
556 const struct fimc_fmt *fmt = NULL;
557
558 if (format->pad == FLITE_SD_PAD_SINK) {
559 v4l_bound_align_image(&mf->width, 8, dd->max_width,
560 ffs(dd->out_width_align) - 1,
561 &mf->height, 0, dd->max_height, 0, 0);
562
563 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
564 if (WARN_ON(!fmt))
565 return NULL;
566
567 mf->colorspace = fmt->colorspace;
568 mf->code = fmt->mbus_code;
569 } else {
570 struct flite_frame *sink = &fimc->inp_frame;
571 struct v4l2_mbus_framefmt *sink_fmt;
572 struct v4l2_rect *rect;
573
574 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
575 sink_fmt = v4l2_subdev_state_get_format(sd_state,
576 FLITE_SD_PAD_SINK);
577
578 mf->code = sink_fmt->code;
579 mf->colorspace = sink_fmt->colorspace;
580
581 rect = v4l2_subdev_state_get_crop(sd_state,
582 FLITE_SD_PAD_SINK);
583 } else {
584 mf->code = sink->fmt->mbus_code;
585 mf->colorspace = sink->fmt->colorspace;
586 rect = &sink->rect;
587 }
588
589 /* Allow changing format only on sink pad */
590 mf->width = rect->width;
591 mf->height = rect->height;
592 }
593
594 mf->field = V4L2_FIELD_NONE;
595
596 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
597 mf->code, mf->colorspace, mf->width, mf->height);
598
599 return fmt;
600 }
601
602 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
603 {
604 struct flite_frame *frame = &fimc->inp_frame;
605
606 v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
607 &r->height, 0, frame->f_height, 0, 0);
608
609 /* Adjust left/top if cropping rectangle got out of bounds */
610 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
611 r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
612 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
613
614 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
615 r->left, r->top, r->width, r->height,
616 frame->f_width, frame->f_height);
617 }
618
619 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
620 {
621 struct flite_frame *frame = &fimc->out_frame;
622 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
623
624 /* Scaling is not supported so we enforce compose rectangle size
625 same as size of the sink crop rectangle. */
626 r->width = crop_rect->width;
627 r->height = crop_rect->height;
628
629 /* Adjust left/top if the composing 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->out_hor_offs_align);
632 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
633
634 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
635 r->left, r->top, r->width, r->height,
636 frame->f_width, frame->f_height);
637 }
638
639 /*
640 * Video node ioctl operations
641 */
642 static int fimc_lite_querycap(struct file *file, void *priv,
643 struct v4l2_capability *cap)
644 {
645 strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
646 strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
647 return 0;
648 }
649
650 static int fimc_lite_enum_fmt(struct file *file, void *priv,
651 struct v4l2_fmtdesc *f)
652 {
653 const struct fimc_fmt *fmt;
654
655 if (f->index >= ARRAY_SIZE(fimc_lite_formats))
656 return -EINVAL;
657
658 fmt = &fimc_lite_formats[f->index];
659 f->pixelformat = fmt->fourcc;
660
661 return 0;
662 }
663
664 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
665 struct v4l2_format *f)
666 {
667 struct fimc_lite *fimc = video_drvdata(file);
668 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
669 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
670 struct flite_frame *frame = &fimc->out_frame;
671 const struct fimc_fmt *fmt = frame->fmt;
672
673 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
674 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
675
676 pixm->num_planes = fmt->memplanes;
677 pixm->pixelformat = fmt->fourcc;
678 pixm->width = frame->f_width;
679 pixm->height = frame->f_height;
680 pixm->field = V4L2_FIELD_NONE;
681 pixm->colorspace = fmt->colorspace;
682 return 0;
683 }
684
685 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
686 struct v4l2_pix_format_mplane *pixm,
687 const struct fimc_fmt **ffmt)
688 {
689 u32 bpl = pixm->plane_fmt[0].bytesperline;
690 struct flite_drvdata *dd = fimc->dd;
691 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
692 const struct fimc_fmt *fmt;
693
694 if (WARN_ON(inp_fmt == NULL))
695 return -EINVAL;
696 /*
697 * We allow some flexibility only for YUV formats. In case of raw
698 * raw Bayer the FIMC-LITE's output format must match its camera
699 * interface input format.
700 */
701 if (inp_fmt->flags & FMT_FLAGS_YUV)
702 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
703 inp_fmt->flags, 0);
704 else
705 fmt = inp_fmt;
706
707 if (WARN_ON(fmt == NULL))
708 return -EINVAL;
709 if (ffmt)
710 *ffmt = fmt;
711 v4l_bound_align_image(&pixm->width, 8, dd->max_width,
712 ffs(dd->out_width_align) - 1,
713 &pixm->height, 0, dd->max_height, 0, 0);
714
715 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
716 pixm->plane_fmt[0].bytesperline = (pixm->width *
717 fmt->depth[0]) / 8;
718
719 if (pixm->plane_fmt[0].sizeimage == 0)
720 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
721 fmt->depth[0]) / 8;
722 pixm->num_planes = fmt->memplanes;
723 pixm->pixelformat = fmt->fourcc;
724 pixm->colorspace = fmt->colorspace;
725 pixm->field = V4L2_FIELD_NONE;
726 return 0;
727 }
728
729 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
730 struct v4l2_format *f)
731 {
732 struct fimc_lite *fimc = video_drvdata(file);
733 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
734 }
735
736 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
737 struct v4l2_format *f)
738 {
739 const struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
740 struct fimc_lite *fimc = video_drvdata(file);
741 struct flite_frame *frame = &fimc->out_frame;
742 const struct fimc_fmt *fmt = NULL;
743 int ret;
744
745 if (vb2_is_busy(&fimc->vb_queue))
746 return -EBUSY;
747
748 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
749 if (ret < 0)
750 return ret;
751
752 frame->fmt = fmt;
753 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
754 pixm->plane_fmt[0].sizeimage);
755 frame->f_width = pixm->width;
756 frame->f_height = pixm->height;
757
758 return 0;
759 }
760
761 static int fimc_pipeline_validate(struct fimc_lite *fimc)
762 {
763 struct v4l2_subdev *sd = &fimc->subdev;
764 struct v4l2_subdev_format sink_fmt = {
765 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
766 };
767 struct v4l2_subdev_format src_fmt = {
768 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
769 };
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 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
787 &sink_fmt);
788 if (ret < 0 && ret != -ENOIOCTLCMD)
789 return -EPIPE;
790 }
791 /* Retrieve format at the source pad */
792 pad = media_pad_remote_pad_first(pad);
793 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
794 break;
795
796 sd = media_entity_to_v4l2_subdev(pad->entity);
797 src_fmt.pad = pad->index;
798 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
799 if (ret < 0 && ret != -ENOIOCTLCMD)
800 return -EPIPE;
801
802 if (src_fmt.format.width != sink_fmt.format.width ||
803 src_fmt.format.height != sink_fmt.format.height ||
804 src_fmt.format.code != sink_fmt.format.code)
805 return -EPIPE;
806 }
807 return 0;
808 }
809
810 static int fimc_lite_streamon(struct file *file, void *priv,
811 enum v4l2_buf_type type)
812 {
813 struct fimc_lite *fimc = video_drvdata(file);
814 int ret;
815
816 if (fimc_lite_active(fimc))
817 return -EBUSY;
818
819 ret = video_device_pipeline_start(&fimc->ve.vdev, &fimc->ve.pipe->mp);
820 if (ret < 0)
821 return ret;
822
823 ret = fimc_pipeline_validate(fimc);
824 if (ret < 0)
825 goto err_p_stop;
826
827 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
828
829 ret = vb2_ioctl_streamon(file, priv, type);
830 if (!ret) {
831 fimc->streaming = true;
832 return ret;
833 }
834
835 err_p_stop:
836 video_device_pipeline_stop(&fimc->ve.vdev);
837 return 0;
838 }
839
840 static int fimc_lite_streamoff(struct file *file, void *priv,
841 enum v4l2_buf_type type)
842 {
843 struct fimc_lite *fimc = video_drvdata(file);
844 int ret;
845
846 ret = vb2_ioctl_streamoff(file, priv, type);
847 if (ret < 0)
848 return ret;
849
850 video_device_pipeline_stop(&fimc->ve.vdev);
851 fimc->streaming = false;
852 return 0;
853 }
854
855 static int fimc_lite_reqbufs(struct file *file, void *priv,
856 struct v4l2_requestbuffers *reqbufs)
857 {
858 struct fimc_lite *fimc = video_drvdata(file);
859 int ret;
860
861 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
862 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
863 if (!ret)
864 fimc->reqbufs_count = reqbufs->count;
865
866 return ret;
867 }
868
869 static int fimc_lite_g_selection(struct file *file, void *fh,
870 struct v4l2_selection *sel)
871 {
872 struct fimc_lite *fimc = video_drvdata(file);
873 struct flite_frame *f = &fimc->out_frame;
874
875 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
876 return -EINVAL;
877
878 switch (sel->target) {
879 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
880 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
881 sel->r.left = 0;
882 sel->r.top = 0;
883 sel->r.width = f->f_width;
884 sel->r.height = f->f_height;
885 return 0;
886
887 case V4L2_SEL_TGT_COMPOSE:
888 sel->r = f->rect;
889 return 0;
890 }
891
892 return -EINVAL;
893 }
894
895 static int fimc_lite_s_selection(struct file *file, void *fh,
896 struct v4l2_selection *sel)
897 {
898 struct fimc_lite *fimc = video_drvdata(file);
899 struct flite_frame *f = &fimc->out_frame;
900 struct v4l2_rect rect = sel->r;
901 unsigned long flags;
902
903 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
904 sel->target != V4L2_SEL_TGT_COMPOSE)
905 return -EINVAL;
906
907 fimc_lite_try_compose(fimc, &rect);
908
909 if ((sel->flags & V4L2_SEL_FLAG_LE) &&
910 !v4l2_rect_enclosed(&rect, &sel->r))
911 return -ERANGE;
912
913 if ((sel->flags & V4L2_SEL_FLAG_GE) &&
914 !v4l2_rect_enclosed(&sel->r, &rect))
915 return -ERANGE;
916
917 sel->r = rect;
918 spin_lock_irqsave(&fimc->slock, flags);
919 f->rect = rect;
920 set_bit(ST_FLITE_CONFIG, &fimc->state);
921 spin_unlock_irqrestore(&fimc->slock, flags);
922
923 return 0;
924 }
925
926 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
927 .vidioc_querycap = fimc_lite_querycap,
928 .vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt,
929 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
930 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
931 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
932 .vidioc_g_selection = fimc_lite_g_selection,
933 .vidioc_s_selection = fimc_lite_s_selection,
934 .vidioc_reqbufs = fimc_lite_reqbufs,
935 .vidioc_querybuf = vb2_ioctl_querybuf,
936 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
937 .vidioc_create_bufs = vb2_ioctl_create_bufs,
938 .vidioc_qbuf = vb2_ioctl_qbuf,
939 .vidioc_dqbuf = vb2_ioctl_dqbuf,
940 .vidioc_streamon = fimc_lite_streamon,
941 .vidioc_streamoff = fimc_lite_streamoff,
942 };
943
944 /* Capture subdev media entity operations */
945 static int fimc_lite_link_setup(struct media_entity *entity,
946 const struct media_pad *local,
947 const struct media_pad *remote, u32 flags)
948 {
949 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
950 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
951 int ret = 0;
952
953 if (WARN_ON(fimc == NULL))
954 return 0;
955
956 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
957 __func__, remote->entity->name, local->entity->name,
958 flags, fimc->source_subdev_grp_id);
959
960 switch (local->index) {
961 case FLITE_SD_PAD_SINK:
962 if (flags & MEDIA_LNK_FL_ENABLED) {
963 if (fimc->source_subdev_grp_id == 0)
964 fimc->source_subdev_grp_id = sd->grp_id;
965 else
966 ret = -EBUSY;
967 } else {
968 fimc->source_subdev_grp_id = 0;
969 fimc->sensor = NULL;
970 }
971 break;
972
973 case FLITE_SD_PAD_SOURCE_DMA:
974 if (!(flags & MEDIA_LNK_FL_ENABLED))
975 atomic_set(&fimc->out_path, FIMC_IO_NONE);
976 else
977 atomic_set(&fimc->out_path, FIMC_IO_DMA);
978 break;
979
980 case FLITE_SD_PAD_SOURCE_ISP:
981 if (!(flags & MEDIA_LNK_FL_ENABLED))
982 atomic_set(&fimc->out_path, FIMC_IO_NONE);
983 else
984 atomic_set(&fimc->out_path, FIMC_IO_ISP);
985 break;
986
987 default:
988 v4l2_err(sd, "Invalid pad index\n");
989 ret = -EINVAL;
990 }
991 mb();
992
993 return ret;
994 }
995
996 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
997 .link_setup = fimc_lite_link_setup,
998 };
999
1000 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1001 struct v4l2_subdev_state *sd_state,
1002 struct v4l2_subdev_mbus_code_enum *code)
1003 {
1004 const struct fimc_fmt *fmt;
1005
1006 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1007 if (!fmt)
1008 return -EINVAL;
1009 code->code = fmt->mbus_code;
1010 return 0;
1011 }
1012
1013 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1014 struct v4l2_subdev *sd,
1015 struct v4l2_subdev_state *sd_state, unsigned int pad)
1016 {
1017 if (pad != FLITE_SD_PAD_SINK)
1018 pad = FLITE_SD_PAD_SOURCE_DMA;
1019
1020 return v4l2_subdev_state_get_format(sd_state, pad);
1021 }
1022
1023 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1024 struct v4l2_subdev_state *sd_state,
1025 struct v4l2_subdev_format *fmt)
1026 {
1027 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1028 struct v4l2_mbus_framefmt *mf = &fmt->format;
1029 struct flite_frame *f = &fimc->inp_frame;
1030
1031 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1032 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad);
1033 fmt->format = *mf;
1034 return 0;
1035 }
1036
1037 mutex_lock(&fimc->lock);
1038 mf->colorspace = f->fmt->colorspace;
1039 mf->code = f->fmt->mbus_code;
1040
1041 if (fmt->pad == FLITE_SD_PAD_SINK) {
1042 /* full camera input frame size */
1043 mf->width = f->f_width;
1044 mf->height = f->f_height;
1045 } else {
1046 /* crop size */
1047 mf->width = f->rect.width;
1048 mf->height = f->rect.height;
1049 }
1050 mutex_unlock(&fimc->lock);
1051 return 0;
1052 }
1053
1054 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1055 struct v4l2_subdev_state *sd_state,
1056 struct v4l2_subdev_format *fmt)
1057 {
1058 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1059 struct v4l2_mbus_framefmt *mf = &fmt->format;
1060 struct flite_frame *sink = &fimc->inp_frame;
1061 struct flite_frame *source = &fimc->out_frame;
1062 const struct fimc_fmt *ffmt;
1063
1064 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1065 fmt->pad, mf->code, mf->width, mf->height);
1066
1067 mutex_lock(&fimc->lock);
1068
1069 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1070 media_entity_is_streaming(&sd->entity)) ||
1071 (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1072 vb2_is_busy(&fimc->vb_queue))) {
1073 mutex_unlock(&fimc->lock);
1074 return -EBUSY;
1075 }
1076
1077 ffmt = fimc_lite_subdev_try_fmt(fimc, sd_state, fmt);
1078
1079 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1080 struct v4l2_mbus_framefmt *src_fmt;
1081
1082 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad);
1083 *mf = fmt->format;
1084
1085 if (fmt->pad == FLITE_SD_PAD_SINK) {
1086 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1087 src_fmt = __fimc_lite_subdev_get_try_fmt(sd, sd_state,
1088 pad);
1089 *src_fmt = *mf;
1090 }
1091
1092 mutex_unlock(&fimc->lock);
1093 return 0;
1094 }
1095
1096 if (fmt->pad == FLITE_SD_PAD_SINK) {
1097 sink->f_width = mf->width;
1098 sink->f_height = mf->height;
1099 sink->fmt = ffmt;
1100 /* Set sink crop rectangle */
1101 sink->rect.width = mf->width;
1102 sink->rect.height = mf->height;
1103 sink->rect.left = 0;
1104 sink->rect.top = 0;
1105 /* Reset source format and crop rectangle */
1106 source->rect = sink->rect;
1107 source->f_width = mf->width;
1108 source->f_height = mf->height;
1109 }
1110
1111 mutex_unlock(&fimc->lock);
1112 return 0;
1113 }
1114
1115 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1116 struct v4l2_subdev_state *sd_state,
1117 struct v4l2_subdev_selection *sel)
1118 {
1119 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1120 struct flite_frame *f = &fimc->inp_frame;
1121
1122 if ((sel->target != V4L2_SEL_TGT_CROP &&
1123 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1124 sel->pad != FLITE_SD_PAD_SINK)
1125 return -EINVAL;
1126
1127 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1128 sel->r = *v4l2_subdev_state_get_crop(sd_state, sel->pad);
1129 return 0;
1130 }
1131
1132 mutex_lock(&fimc->lock);
1133 if (sel->target == V4L2_SEL_TGT_CROP) {
1134 sel->r = f->rect;
1135 } else {
1136 sel->r.left = 0;
1137 sel->r.top = 0;
1138 sel->r.width = f->f_width;
1139 sel->r.height = f->f_height;
1140 }
1141 mutex_unlock(&fimc->lock);
1142
1143 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1144 __func__, f->rect.left, f->rect.top, f->rect.width,
1145 f->rect.height, f->f_width, f->f_height);
1146
1147 return 0;
1148 }
1149
1150 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1151 struct v4l2_subdev_state *sd_state,
1152 struct v4l2_subdev_selection *sel)
1153 {
1154 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1155 struct flite_frame *f = &fimc->inp_frame;
1156 int ret = 0;
1157
1158 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1159 return -EINVAL;
1160
1161 mutex_lock(&fimc->lock);
1162 fimc_lite_try_crop(fimc, &sel->r);
1163
1164 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1165 *v4l2_subdev_state_get_crop(sd_state, sel->pad) = sel->r;
1166 } else {
1167 unsigned long flags;
1168 spin_lock_irqsave(&fimc->slock, flags);
1169 f->rect = sel->r;
1170 /* Same crop rectangle on the source pad */
1171 fimc->out_frame.rect = sel->r;
1172 set_bit(ST_FLITE_CONFIG, &fimc->state);
1173 spin_unlock_irqrestore(&fimc->slock, flags);
1174 }
1175 mutex_unlock(&fimc->lock);
1176
1177 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1178 __func__, f->rect.left, f->rect.top, f->rect.width,
1179 f->rect.height, f->f_width, f->f_height);
1180
1181 return ret;
1182 }
1183
1184 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1185 {
1186 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1187 unsigned long flags;
1188 int ret;
1189
1190 /*
1191 * Find sensor subdev linked to FIMC-LITE directly or through
1192 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1193 * is used as a subdev only and feeds data internally to FIMC-IS.
1194 * The pipeline links are protected through entity.pipe so there is no
1195 * need to take the media graph mutex here.
1196 */
1197 fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1198
1199 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1200 return -ENOIOCTLCMD;
1201
1202 mutex_lock(&fimc->lock);
1203 if (on) {
1204 flite_hw_reset(fimc);
1205 ret = fimc_lite_hw_init(fimc, true);
1206 if (!ret) {
1207 spin_lock_irqsave(&fimc->slock, flags);
1208 flite_hw_capture_start(fimc);
1209 spin_unlock_irqrestore(&fimc->slock, flags);
1210 }
1211 } else {
1212 set_bit(ST_FLITE_OFF, &fimc->state);
1213
1214 spin_lock_irqsave(&fimc->slock, flags);
1215 flite_hw_capture_stop(fimc);
1216 spin_unlock_irqrestore(&fimc->slock, flags);
1217
1218 ret = wait_event_timeout(fimc->irq_queue,
1219 !test_bit(ST_FLITE_OFF, &fimc->state),
1220 msecs_to_jiffies(200));
1221 if (ret == 0)
1222 v4l2_err(sd, "s_stream(0) timeout\n");
1223 clear_bit(ST_FLITE_RUN, &fimc->state);
1224 }
1225
1226 mutex_unlock(&fimc->lock);
1227 return ret;
1228 }
1229
1230 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1231 {
1232 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1233
1234 flite_hw_dump_regs(fimc, __func__);
1235 return 0;
1236 }
1237
1238 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1239 {
1240 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1241 struct vb2_queue *q = &fimc->vb_queue;
1242 struct video_device *vfd = &fimc->ve.vdev;
1243 int ret;
1244
1245 memset(vfd, 0, sizeof(*vfd));
1246 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1247
1248 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1249 fimc->index);
1250
1251 vfd->fops = &fimc_lite_fops;
1252 vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1253 vfd->v4l2_dev = sd->v4l2_dev;
1254 vfd->minor = -1;
1255 vfd->release = video_device_release_empty;
1256 vfd->queue = q;
1257 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
1258 fimc->reqbufs_count = 0;
1259
1260 INIT_LIST_HEAD(&fimc->pending_buf_q);
1261 INIT_LIST_HEAD(&fimc->active_buf_q);
1262
1263 memset(q, 0, sizeof(*q));
1264 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1265 q->io_modes = VB2_MMAP | VB2_USERPTR;
1266 q->ops = &fimc_lite_qops;
1267 q->mem_ops = &vb2_dma_contig_memops;
1268 q->buf_struct_size = sizeof(struct flite_buffer);
1269 q->drv_priv = fimc;
1270 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1271 q->lock = &fimc->lock;
1272 q->dev = &fimc->pdev->dev;
1273
1274 ret = vb2_queue_init(q);
1275 if (ret < 0)
1276 return ret;
1277
1278 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1279 ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
1280 if (ret < 0)
1281 return ret;
1282
1283 video_set_drvdata(vfd, fimc);
1284 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1285
1286 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1287 if (ret < 0) {
1288 media_entity_cleanup(&vfd->entity);
1289 fimc->ve.pipe = NULL;
1290 return ret;
1291 }
1292
1293 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1294 vfd->name, video_device_node_name(vfd));
1295 return 0;
1296 }
1297
1298 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1299 {
1300 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1301
1302 if (fimc == NULL)
1303 return;
1304
1305 mutex_lock(&fimc->lock);
1306
1307 if (video_is_registered(&fimc->ve.vdev)) {
1308 video_unregister_device(&fimc->ve.vdev);
1309 media_entity_cleanup(&fimc->ve.vdev.entity);
1310 fimc->ve.pipe = NULL;
1311 }
1312
1313 mutex_unlock(&fimc->lock);
1314 }
1315
1316 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1317 .registered = fimc_lite_subdev_registered,
1318 .unregistered = fimc_lite_subdev_unregistered,
1319 };
1320
1321 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1322 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1323 .get_selection = fimc_lite_subdev_get_selection,
1324 .set_selection = fimc_lite_subdev_set_selection,
1325 .get_fmt = fimc_lite_subdev_get_fmt,
1326 .set_fmt = fimc_lite_subdev_set_fmt,
1327 };
1328
1329 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1330 .s_stream = fimc_lite_subdev_s_stream,
1331 };
1332
1333 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1334 .log_status = fimc_lite_log_status,
1335 };
1336
1337 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1338 .core = &fimc_lite_core_ops,
1339 .video = &fimc_lite_subdev_video_ops,
1340 .pad = &fimc_lite_subdev_pad_ops,
1341 };
1342
1343 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1344 {
1345 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1346 ctrl_handler);
1347 set_bit(ST_FLITE_CONFIG, &fimc->state);
1348 return 0;
1349 }
1350
1351 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1352 .s_ctrl = fimc_lite_s_ctrl,
1353 };
1354
1355 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1356 .ops = &fimc_lite_ctrl_ops,
1357 .id = V4L2_CTRL_CLASS_USER | 0x1001,
1358 .type = V4L2_CTRL_TYPE_BOOLEAN,
1359 .name = "Test Pattern 640x480",
1360 .step = 1,
1361 };
1362
1363 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1364 {
1365 struct flite_frame *sink = &fimc->inp_frame;
1366 struct flite_frame *source = &fimc->out_frame;
1367
1368 sink->fmt = &fimc_lite_formats[0];
1369 sink->f_width = FLITE_DEFAULT_WIDTH;
1370 sink->f_height = FLITE_DEFAULT_HEIGHT;
1371
1372 sink->rect.width = FLITE_DEFAULT_WIDTH;
1373 sink->rect.height = FLITE_DEFAULT_HEIGHT;
1374 sink->rect.left = 0;
1375 sink->rect.top = 0;
1376
1377 *source = *sink;
1378 }
1379
1380 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1381 {
1382 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1383 struct v4l2_subdev *sd = &fimc->subdev;
1384 int ret;
1385
1386 v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1387 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1388 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1389
1390 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1391 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1392 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1393 ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
1394 fimc->subdev_pads);
1395 if (ret)
1396 return ret;
1397
1398 v4l2_ctrl_handler_init(handler, 1);
1399 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1400 NULL);
1401 if (handler->error) {
1402 media_entity_cleanup(&sd->entity);
1403 return handler->error;
1404 }
1405
1406 sd->ctrl_handler = handler;
1407 sd->internal_ops = &fimc_lite_subdev_internal_ops;
1408 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1409 sd->entity.ops = &fimc_lite_subdev_media_ops;
1410 sd->owner = THIS_MODULE;
1411 v4l2_set_subdevdata(sd, fimc);
1412
1413 return 0;
1414 }
1415
1416 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1417 {
1418 struct v4l2_subdev *sd = &fimc->subdev;
1419
1420 v4l2_device_unregister_subdev(sd);
1421 media_entity_cleanup(&sd->entity);
1422 v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1423 v4l2_set_subdevdata(sd, NULL);
1424 }
1425
1426 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1427 {
1428 if (IS_ERR(fimc->clock))
1429 return;
1430
1431 clk_put(fimc->clock);
1432 fimc->clock = ERR_PTR(-EINVAL);
1433 }
1434
1435 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1436 {
1437 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1438 return PTR_ERR_OR_ZERO(fimc->clock);
1439 }
1440
1441 static const struct of_device_id flite_of_match[];
1442
1443 static int fimc_lite_probe(struct platform_device *pdev)
1444 {
1445 struct flite_drvdata *drv_data = NULL;
1446 struct device *dev = &pdev->dev;
1447 const struct of_device_id *of_id;
1448 struct fimc_lite *fimc;
1449 int ret;
1450 int irq;
1451
1452 if (!dev->of_node)
1453 return -ENODEV;
1454
1455 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1456 if (!fimc)
1457 return -ENOMEM;
1458
1459 of_id = of_match_node(flite_of_match, dev->of_node);
1460 if (of_id)
1461 drv_data = (struct flite_drvdata *)of_id->data;
1462 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1463
1464 if (!drv_data || fimc->index >= drv_data->num_instances ||
1465 fimc->index < 0) {
1466 dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
1467 return -EINVAL;
1468 }
1469
1470 fimc->dd = drv_data;
1471 fimc->pdev = pdev;
1472
1473 init_waitqueue_head(&fimc->irq_queue);
1474 spin_lock_init(&fimc->slock);
1475 mutex_init(&fimc->lock);
1476
1477 fimc->regs = devm_platform_ioremap_resource(pdev, 0);
1478 if (IS_ERR(fimc->regs))
1479 return PTR_ERR(fimc->regs);
1480
1481 irq = platform_get_irq(pdev, 0);
1482 if (irq < 0)
1483 return irq;
1484
1485 ret = fimc_lite_clk_get(fimc);
1486 if (ret)
1487 return ret;
1488
1489 ret = devm_request_irq(dev, irq, flite_irq_handler,
1490 0, dev_name(dev), fimc);
1491 if (ret) {
1492 dev_err(dev, "Failed to install irq (%d)\n", ret);
1493 goto err_clk_put;
1494 }
1495
1496 /* The video node will be created within the subdev's registered() op */
1497 ret = fimc_lite_create_capture_subdev(fimc);
1498 if (ret)
1499 goto err_clk_put;
1500
1501 platform_set_drvdata(pdev, fimc);
1502 pm_runtime_enable(dev);
1503
1504 if (!pm_runtime_enabled(dev)) {
1505 ret = clk_prepare_enable(fimc->clock);
1506 if (ret < 0)
1507 goto err_sd;
1508 }
1509
1510 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1511
1512 fimc_lite_set_default_config(fimc);
1513
1514 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1515 fimc->index);
1516 return 0;
1517
1518 err_sd:
1519 fimc_lite_unregister_capture_subdev(fimc);
1520 err_clk_put:
1521 fimc_lite_clk_put(fimc);
1522 return ret;
1523 }
1524
1525 #ifdef CONFIG_PM
1526 static int fimc_lite_runtime_resume(struct device *dev)
1527 {
1528 struct fimc_lite *fimc = dev_get_drvdata(dev);
1529
1530 clk_prepare_enable(fimc->clock);
1531 return 0;
1532 }
1533
1534 static int fimc_lite_runtime_suspend(struct device *dev)
1535 {
1536 struct fimc_lite *fimc = dev_get_drvdata(dev);
1537
1538 clk_disable_unprepare(fimc->clock);
1539 return 0;
1540 }
1541 #endif
1542
1543 #ifdef CONFIG_PM_SLEEP
1544 static int fimc_lite_resume(struct device *dev)
1545 {
1546 struct fimc_lite *fimc = dev_get_drvdata(dev);
1547 struct flite_buffer *buf;
1548 unsigned long flags;
1549 int i;
1550
1551 spin_lock_irqsave(&fimc->slock, flags);
1552 if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1553 !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1554 spin_unlock_irqrestore(&fimc->slock, flags);
1555 return 0;
1556 }
1557 flite_hw_reset(fimc);
1558 spin_unlock_irqrestore(&fimc->slock, flags);
1559
1560 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1561 return 0;
1562
1563 INIT_LIST_HEAD(&fimc->active_buf_q);
1564 fimc_pipeline_call(&fimc->ve, open,
1565 &fimc->ve.vdev.entity, false);
1566 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1567 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1568
1569 for (i = 0; i < fimc->reqbufs_count; i++) {
1570 if (list_empty(&fimc->pending_buf_q))
1571 break;
1572 buf = fimc_lite_pending_queue_pop(fimc);
1573 buffer_queue(&buf->vb.vb2_buf);
1574 }
1575 return 0;
1576 }
1577
1578 static int fimc_lite_suspend(struct device *dev)
1579 {
1580 struct fimc_lite *fimc = dev_get_drvdata(dev);
1581 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1582 int ret;
1583
1584 if (test_and_set_bit(ST_LPM, &fimc->state))
1585 return 0;
1586
1587 ret = fimc_lite_stop_capture(fimc, suspend);
1588 if (ret < 0 || !fimc_lite_active(fimc))
1589 return ret;
1590
1591 return fimc_pipeline_call(&fimc->ve, close);
1592 }
1593 #endif /* CONFIG_PM_SLEEP */
1594
1595 static void fimc_lite_remove(struct platform_device *pdev)
1596 {
1597 struct fimc_lite *fimc = platform_get_drvdata(pdev);
1598 struct device *dev = &pdev->dev;
1599
1600 if (!pm_runtime_enabled(dev))
1601 clk_disable_unprepare(fimc->clock);
1602
1603 pm_runtime_disable(dev);
1604 pm_runtime_set_suspended(dev);
1605 fimc_lite_unregister_capture_subdev(fimc);
1606 vb2_dma_contig_clear_max_seg_size(dev);
1607 fimc_lite_clk_put(fimc);
1608
1609 dev_info(dev, "Driver unloaded\n");
1610 }
1611
1612 static const struct dev_pm_ops fimc_lite_pm_ops = {
1613 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1614 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1615 NULL)
1616 };
1617
1618 /* EXYNOS4212, EXYNOS4412 */
1619 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1620 .max_width = 8192,
1621 .max_height = 8192,
1622 .out_width_align = 8,
1623 .win_hor_offs_align = 2,
1624 .out_hor_offs_align = 8,
1625 .max_dma_bufs = 1,
1626 .num_instances = 2,
1627 };
1628
1629 /* EXYNOS5250 */
1630 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1631 .max_width = 8192,
1632 .max_height = 8192,
1633 .out_width_align = 8,
1634 .win_hor_offs_align = 2,
1635 .out_hor_offs_align = 8,
1636 .max_dma_bufs = 32,
1637 .num_instances = 3,
1638 };
1639
1640 static const struct of_device_id flite_of_match[] = {
1641 {
1642 .compatible = "samsung,exynos4212-fimc-lite",
1643 .data = &fimc_lite_drvdata_exynos4,
1644 },
1645 {
1646 .compatible = "samsung,exynos5250-fimc-lite",
1647 .data = &fimc_lite_drvdata_exynos5,
1648 },
1649 { /* sentinel */ },
1650 };
1651 MODULE_DEVICE_TABLE(of, flite_of_match);
1652
1653 static struct platform_driver fimc_lite_driver = {
1654 .probe = fimc_lite_probe,
1655 .remove = fimc_lite_remove,
1656 .driver = {
1657 .of_match_table = flite_of_match,
1658 .name = FIMC_LITE_DRV_NAME,
1659 .pm = &fimc_lite_pm_ops,
1660 }
1661 };
1662 module_platform_driver(fimc_lite_driver);
1663 MODULE_DESCRIPTION("Samsung EXYNOS FIMC-LITE (camera host interface) driver");
1664 MODULE_LICENSE("GPL");
1665 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
Kernel DRM miscellaneous fixes and cross-tree changes