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 */
fimc_lite_find_format(const u32 * pixelformat,const u32 * mbus_code,unsigned int mask,int index)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
fimc_lite_hw_init(struct fimc_lite * fimc,bool isp_output)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 */
fimc_lite_reinit(struct fimc_lite * fimc,bool suspend)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
fimc_lite_stop_capture(struct fimc_lite * fimc,bool suspend)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. */
fimc_lite_config_update(struct fimc_lite * fimc)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
flite_irq_handler(int irq,void * priv)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
start_streaming(struct vb2_queue * q,unsigned int count)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
stop_streaming(struct vb2_queue * q)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
queue_setup(struct vb2_queue * vq,unsigned int * num_buffers,unsigned int * num_planes,unsigned int sizes[],struct device * alloc_devs[])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
buffer_prepare(struct vb2_buffer * vb)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
buffer_queue(struct vb2_buffer * vb)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->paddr = 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
fimc_lite_clear_event_counters(struct fimc_lite * fimc)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
fimc_lite_open(struct file * file)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_resume_and_get(&fimc->pdev->dev);
473 if (ret < 0)
474 goto err_in_use;
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 err_in_use:
503 clear_bit(ST_FLITE_IN_USE, &fimc->state);
504 unlock:
505 mutex_unlock(&fimc->lock);
506 return ret;
507 }
508
fimc_lite_release(struct file * file)509 static int fimc_lite_release(struct file *file)
510 {
511 struct fimc_lite *fimc = video_drvdata(file);
512 struct media_entity *entity = &fimc->ve.vdev.entity;
513
514 mutex_lock(&fimc->lock);
515
516 if (v4l2_fh_is_singular_file(file) &&
517 atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
518 if (fimc->streaming) {
519 media_pipeline_stop(entity);
520 fimc->streaming = false;
521 }
522 fimc_lite_stop_capture(fimc, false);
523 fimc_pipeline_call(&fimc->ve, close);
524 clear_bit(ST_FLITE_IN_USE, &fimc->state);
525
526 mutex_lock(&entity->graph_obj.mdev->graph_mutex);
527 entity->use_count--;
528 mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
529 }
530
531 _vb2_fop_release(file, NULL);
532 pm_runtime_put(&fimc->pdev->dev);
533 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
534
535 mutex_unlock(&fimc->lock);
536 return 0;
537 }
538
539 static const struct v4l2_file_operations fimc_lite_fops = {
540 .owner = THIS_MODULE,
541 .open = fimc_lite_open,
542 .release = fimc_lite_release,
543 .poll = vb2_fop_poll,
544 .unlocked_ioctl = video_ioctl2,
545 .mmap = vb2_fop_mmap,
546 };
547
548 /*
549 * Format and crop negotiation helpers
550 */
551
fimc_lite_subdev_try_fmt(struct fimc_lite * fimc,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * format)552 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
553 struct v4l2_subdev_pad_config *cfg,
554 struct v4l2_subdev_format *format)
555 {
556 struct flite_drvdata *dd = fimc->dd;
557 struct v4l2_mbus_framefmt *mf = &format->format;
558 const struct fimc_fmt *fmt = NULL;
559
560 if (format->pad == FLITE_SD_PAD_SINK) {
561 v4l_bound_align_image(&mf->width, 8, dd->max_width,
562 ffs(dd->out_width_align) - 1,
563 &mf->height, 0, dd->max_height, 0, 0);
564
565 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
566 if (WARN_ON(!fmt))
567 return NULL;
568
569 mf->colorspace = fmt->colorspace;
570 mf->code = fmt->mbus_code;
571 } else {
572 struct flite_frame *sink = &fimc->inp_frame;
573 struct v4l2_mbus_framefmt *sink_fmt;
574 struct v4l2_rect *rect;
575
576 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
577 sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, cfg,
578 FLITE_SD_PAD_SINK);
579
580 mf->code = sink_fmt->code;
581 mf->colorspace = sink_fmt->colorspace;
582
583 rect = v4l2_subdev_get_try_crop(&fimc->subdev, cfg,
584 FLITE_SD_PAD_SINK);
585 } else {
586 mf->code = sink->fmt->mbus_code;
587 mf->colorspace = sink->fmt->colorspace;
588 rect = &sink->rect;
589 }
590
591 /* Allow changing format only on sink pad */
592 mf->width = rect->width;
593 mf->height = rect->height;
594 }
595
596 mf->field = V4L2_FIELD_NONE;
597
598 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
599 mf->code, mf->colorspace, mf->width, mf->height);
600
601 return fmt;
602 }
603
fimc_lite_try_crop(struct fimc_lite * fimc,struct v4l2_rect * r)604 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
605 {
606 struct flite_frame *frame = &fimc->inp_frame;
607
608 v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
609 &r->height, 0, frame->f_height, 0, 0);
610
611 /* Adjust left/top if cropping rectangle got out of bounds */
612 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
613 r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
614 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
615
616 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
617 r->left, r->top, r->width, r->height,
618 frame->f_width, frame->f_height);
619 }
620
fimc_lite_try_compose(struct fimc_lite * fimc,struct v4l2_rect * r)621 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
622 {
623 struct flite_frame *frame = &fimc->out_frame;
624 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
625
626 /* Scaling is not supported so we enforce compose rectangle size
627 same as size of the sink crop rectangle. */
628 r->width = crop_rect->width;
629 r->height = crop_rect->height;
630
631 /* Adjust left/top if the composing rectangle got out of bounds */
632 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
633 r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
634 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
635
636 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
637 r->left, r->top, r->width, r->height,
638 frame->f_width, frame->f_height);
639 }
640
641 /*
642 * Video node ioctl operations
643 */
fimc_lite_querycap(struct file * file,void * priv,struct v4l2_capability * cap)644 static int fimc_lite_querycap(struct file *file, void *priv,
645 struct v4l2_capability *cap)
646 {
647 struct fimc_lite *fimc = video_drvdata(file);
648
649 strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
650 strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
651 snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
652 dev_name(&fimc->pdev->dev));
653 return 0;
654 }
655
fimc_lite_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)656 static int fimc_lite_enum_fmt(struct file *file, void *priv,
657 struct v4l2_fmtdesc *f)
658 {
659 const struct fimc_fmt *fmt;
660
661 if (f->index >= ARRAY_SIZE(fimc_lite_formats))
662 return -EINVAL;
663
664 fmt = &fimc_lite_formats[f->index];
665 f->pixelformat = fmt->fourcc;
666
667 return 0;
668 }
669
fimc_lite_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)670 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
671 struct v4l2_format *f)
672 {
673 struct fimc_lite *fimc = video_drvdata(file);
674 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
675 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
676 struct flite_frame *frame = &fimc->out_frame;
677 const struct fimc_fmt *fmt = frame->fmt;
678
679 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
680 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
681
682 pixm->num_planes = fmt->memplanes;
683 pixm->pixelformat = fmt->fourcc;
684 pixm->width = frame->f_width;
685 pixm->height = frame->f_height;
686 pixm->field = V4L2_FIELD_NONE;
687 pixm->colorspace = fmt->colorspace;
688 return 0;
689 }
690
fimc_lite_try_fmt(struct fimc_lite * fimc,struct v4l2_pix_format_mplane * pixm,const struct fimc_fmt ** ffmt)691 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
692 struct v4l2_pix_format_mplane *pixm,
693 const struct fimc_fmt **ffmt)
694 {
695 u32 bpl = pixm->plane_fmt[0].bytesperline;
696 struct flite_drvdata *dd = fimc->dd;
697 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
698 const struct fimc_fmt *fmt;
699
700 if (WARN_ON(inp_fmt == NULL))
701 return -EINVAL;
702 /*
703 * We allow some flexibility only for YUV formats. In case of raw
704 * raw Bayer the FIMC-LITE's output format must match its camera
705 * interface input format.
706 */
707 if (inp_fmt->flags & FMT_FLAGS_YUV)
708 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
709 inp_fmt->flags, 0);
710 else
711 fmt = inp_fmt;
712
713 if (WARN_ON(fmt == NULL))
714 return -EINVAL;
715 if (ffmt)
716 *ffmt = fmt;
717 v4l_bound_align_image(&pixm->width, 8, dd->max_width,
718 ffs(dd->out_width_align) - 1,
719 &pixm->height, 0, dd->max_height, 0, 0);
720
721 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
722 pixm->plane_fmt[0].bytesperline = (pixm->width *
723 fmt->depth[0]) / 8;
724
725 if (pixm->plane_fmt[0].sizeimage == 0)
726 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
727 fmt->depth[0]) / 8;
728 pixm->num_planes = fmt->memplanes;
729 pixm->pixelformat = fmt->fourcc;
730 pixm->colorspace = fmt->colorspace;
731 pixm->field = V4L2_FIELD_NONE;
732 return 0;
733 }
734
fimc_lite_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)735 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
736 struct v4l2_format *f)
737 {
738 struct fimc_lite *fimc = video_drvdata(file);
739 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
740 }
741
fimc_lite_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)742 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
743 struct v4l2_format *f)
744 {
745 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
746 struct fimc_lite *fimc = video_drvdata(file);
747 struct flite_frame *frame = &fimc->out_frame;
748 const struct fimc_fmt *fmt = NULL;
749 int ret;
750
751 if (vb2_is_busy(&fimc->vb_queue))
752 return -EBUSY;
753
754 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
755 if (ret < 0)
756 return ret;
757
758 frame->fmt = fmt;
759 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
760 pixm->plane_fmt[0].sizeimage);
761 frame->f_width = pixm->width;
762 frame->f_height = pixm->height;
763
764 return 0;
765 }
766
fimc_pipeline_validate(struct fimc_lite * fimc)767 static int fimc_pipeline_validate(struct fimc_lite *fimc)
768 {
769 struct v4l2_subdev *sd = &fimc->subdev;
770 struct v4l2_subdev_format sink_fmt, src_fmt;
771 struct media_pad *pad;
772 int ret;
773
774 while (1) {
775 /* Retrieve format at the sink pad */
776 pad = &sd->entity.pads[0];
777 if (!(pad->flags & MEDIA_PAD_FL_SINK))
778 break;
779 /* Don't call FIMC subdev operation to avoid nested locking */
780 if (sd == &fimc->subdev) {
781 struct flite_frame *ff = &fimc->out_frame;
782 sink_fmt.format.width = ff->f_width;
783 sink_fmt.format.height = ff->f_height;
784 sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
785 } else {
786 sink_fmt.pad = pad->index;
787 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
788 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
789 &sink_fmt);
790 if (ret < 0 && ret != -ENOIOCTLCMD)
791 return -EPIPE;
792 }
793 /* Retrieve format at the source pad */
794 pad = media_entity_remote_pad(pad);
795 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
796 break;
797
798 sd = media_entity_to_v4l2_subdev(pad->entity);
799 src_fmt.pad = pad->index;
800 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
801 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
802 if (ret < 0 && ret != -ENOIOCTLCMD)
803 return -EPIPE;
804
805 if (src_fmt.format.width != sink_fmt.format.width ||
806 src_fmt.format.height != sink_fmt.format.height ||
807 src_fmt.format.code != sink_fmt.format.code)
808 return -EPIPE;
809 }
810 return 0;
811 }
812
fimc_lite_streamon(struct file * file,void * priv,enum v4l2_buf_type type)813 static int fimc_lite_streamon(struct file *file, void *priv,
814 enum v4l2_buf_type type)
815 {
816 struct fimc_lite *fimc = video_drvdata(file);
817 struct media_entity *entity = &fimc->ve.vdev.entity;
818 int ret;
819
820 if (fimc_lite_active(fimc))
821 return -EBUSY;
822
823 ret = media_pipeline_start(entity, &fimc->ve.pipe->mp);
824 if (ret < 0)
825 return ret;
826
827 ret = fimc_pipeline_validate(fimc);
828 if (ret < 0)
829 goto err_p_stop;
830
831 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
832
833 ret = vb2_ioctl_streamon(file, priv, type);
834 if (!ret) {
835 fimc->streaming = true;
836 return ret;
837 }
838
839 err_p_stop:
840 media_pipeline_stop(entity);
841 return 0;
842 }
843
fimc_lite_streamoff(struct file * file,void * priv,enum v4l2_buf_type type)844 static int fimc_lite_streamoff(struct file *file, void *priv,
845 enum v4l2_buf_type type)
846 {
847 struct fimc_lite *fimc = video_drvdata(file);
848 int ret;
849
850 ret = vb2_ioctl_streamoff(file, priv, type);
851 if (ret < 0)
852 return ret;
853
854 media_pipeline_stop(&fimc->ve.vdev.entity);
855 fimc->streaming = false;
856 return 0;
857 }
858
fimc_lite_reqbufs(struct file * file,void * priv,struct v4l2_requestbuffers * reqbufs)859 static int fimc_lite_reqbufs(struct file *file, void *priv,
860 struct v4l2_requestbuffers *reqbufs)
861 {
862 struct fimc_lite *fimc = video_drvdata(file);
863 int ret;
864
865 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
866 ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
867 if (!ret)
868 fimc->reqbufs_count = reqbufs->count;
869
870 return ret;
871 }
872
fimc_lite_g_selection(struct file * file,void * fh,struct v4l2_selection * sel)873 static int fimc_lite_g_selection(struct file *file, void *fh,
874 struct v4l2_selection *sel)
875 {
876 struct fimc_lite *fimc = video_drvdata(file);
877 struct flite_frame *f = &fimc->out_frame;
878
879 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
880 return -EINVAL;
881
882 switch (sel->target) {
883 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
884 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
885 sel->r.left = 0;
886 sel->r.top = 0;
887 sel->r.width = f->f_width;
888 sel->r.height = f->f_height;
889 return 0;
890
891 case V4L2_SEL_TGT_COMPOSE:
892 sel->r = f->rect;
893 return 0;
894 }
895
896 return -EINVAL;
897 }
898
fimc_lite_s_selection(struct file * file,void * fh,struct v4l2_selection * sel)899 static int fimc_lite_s_selection(struct file *file, void *fh,
900 struct v4l2_selection *sel)
901 {
902 struct fimc_lite *fimc = video_drvdata(file);
903 struct flite_frame *f = &fimc->out_frame;
904 struct v4l2_rect rect = sel->r;
905 unsigned long flags;
906
907 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
908 sel->target != V4L2_SEL_TGT_COMPOSE)
909 return -EINVAL;
910
911 fimc_lite_try_compose(fimc, &rect);
912
913 if ((sel->flags & V4L2_SEL_FLAG_LE) &&
914 !v4l2_rect_enclosed(&rect, &sel->r))
915 return -ERANGE;
916
917 if ((sel->flags & V4L2_SEL_FLAG_GE) &&
918 !v4l2_rect_enclosed(&sel->r, &rect))
919 return -ERANGE;
920
921 sel->r = rect;
922 spin_lock_irqsave(&fimc->slock, flags);
923 f->rect = rect;
924 set_bit(ST_FLITE_CONFIG, &fimc->state);
925 spin_unlock_irqrestore(&fimc->slock, flags);
926
927 return 0;
928 }
929
930 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
931 .vidioc_querycap = fimc_lite_querycap,
932 .vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt,
933 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
934 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
935 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
936 .vidioc_g_selection = fimc_lite_g_selection,
937 .vidioc_s_selection = fimc_lite_s_selection,
938 .vidioc_reqbufs = fimc_lite_reqbufs,
939 .vidioc_querybuf = vb2_ioctl_querybuf,
940 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
941 .vidioc_create_bufs = vb2_ioctl_create_bufs,
942 .vidioc_qbuf = vb2_ioctl_qbuf,
943 .vidioc_dqbuf = vb2_ioctl_dqbuf,
944 .vidioc_streamon = fimc_lite_streamon,
945 .vidioc_streamoff = fimc_lite_streamoff,
946 };
947
948 /* Capture subdev media entity operations */
fimc_lite_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)949 static int fimc_lite_link_setup(struct media_entity *entity,
950 const struct media_pad *local,
951 const struct media_pad *remote, u32 flags)
952 {
953 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
954 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
955 int ret = 0;
956
957 if (WARN_ON(fimc == NULL))
958 return 0;
959
960 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
961 __func__, remote->entity->name, local->entity->name,
962 flags, fimc->source_subdev_grp_id);
963
964 switch (local->index) {
965 case FLITE_SD_PAD_SINK:
966 if (flags & MEDIA_LNK_FL_ENABLED) {
967 if (fimc->source_subdev_grp_id == 0)
968 fimc->source_subdev_grp_id = sd->grp_id;
969 else
970 ret = -EBUSY;
971 } else {
972 fimc->source_subdev_grp_id = 0;
973 fimc->sensor = NULL;
974 }
975 break;
976
977 case FLITE_SD_PAD_SOURCE_DMA:
978 if (!(flags & MEDIA_LNK_FL_ENABLED))
979 atomic_set(&fimc->out_path, FIMC_IO_NONE);
980 else
981 atomic_set(&fimc->out_path, FIMC_IO_DMA);
982 break;
983
984 case FLITE_SD_PAD_SOURCE_ISP:
985 if (!(flags & MEDIA_LNK_FL_ENABLED))
986 atomic_set(&fimc->out_path, FIMC_IO_NONE);
987 else
988 atomic_set(&fimc->out_path, FIMC_IO_ISP);
989 break;
990
991 default:
992 v4l2_err(sd, "Invalid pad index\n");
993 ret = -EINVAL;
994 }
995 mb();
996
997 return ret;
998 }
999
1000 static const struct media_entity_operations fimc_lite_subdev_media_ops = {
1001 .link_setup = fimc_lite_link_setup,
1002 };
1003
fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)1004 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1005 struct v4l2_subdev_pad_config *cfg,
1006 struct v4l2_subdev_mbus_code_enum *code)
1007 {
1008 const struct fimc_fmt *fmt;
1009
1010 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
1011 if (!fmt)
1012 return -EINVAL;
1013 code->code = fmt->mbus_code;
1014 return 0;
1015 }
1016
__fimc_lite_subdev_get_try_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,unsigned int pad)1017 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1018 struct v4l2_subdev *sd,
1019 struct v4l2_subdev_pad_config *cfg, unsigned int pad)
1020 {
1021 if (pad != FLITE_SD_PAD_SINK)
1022 pad = FLITE_SD_PAD_SOURCE_DMA;
1023
1024 return v4l2_subdev_get_try_format(sd, cfg, pad);
1025 }
1026
fimc_lite_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1027 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1028 struct v4l2_subdev_pad_config *cfg,
1029 struct v4l2_subdev_format *fmt)
1030 {
1031 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1032 struct v4l2_mbus_framefmt *mf = &fmt->format;
1033 struct flite_frame *f = &fimc->inp_frame;
1034
1035 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1036 mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
1037 fmt->format = *mf;
1038 return 0;
1039 }
1040
1041 mutex_lock(&fimc->lock);
1042 mf->colorspace = f->fmt->colorspace;
1043 mf->code = f->fmt->mbus_code;
1044
1045 if (fmt->pad == FLITE_SD_PAD_SINK) {
1046 /* full camera input frame size */
1047 mf->width = f->f_width;
1048 mf->height = f->f_height;
1049 } else {
1050 /* crop size */
1051 mf->width = f->rect.width;
1052 mf->height = f->rect.height;
1053 }
1054 mutex_unlock(&fimc->lock);
1055 return 0;
1056 }
1057
fimc_lite_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1058 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1059 struct v4l2_subdev_pad_config *cfg,
1060 struct v4l2_subdev_format *fmt)
1061 {
1062 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1063 struct v4l2_mbus_framefmt *mf = &fmt->format;
1064 struct flite_frame *sink = &fimc->inp_frame;
1065 struct flite_frame *source = &fimc->out_frame;
1066 const struct fimc_fmt *ffmt;
1067
1068 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
1069 fmt->pad, mf->code, mf->width, mf->height);
1070
1071 mutex_lock(&fimc->lock);
1072
1073 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
1074 sd->entity.stream_count > 0) ||
1075 (atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
1076 vb2_is_busy(&fimc->vb_queue))) {
1077 mutex_unlock(&fimc->lock);
1078 return -EBUSY;
1079 }
1080
1081 ffmt = fimc_lite_subdev_try_fmt(fimc, cfg, fmt);
1082
1083 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1084 struct v4l2_mbus_framefmt *src_fmt;
1085
1086 mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
1087 *mf = fmt->format;
1088
1089 if (fmt->pad == FLITE_SD_PAD_SINK) {
1090 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
1091 src_fmt = __fimc_lite_subdev_get_try_fmt(sd, cfg, pad);
1092 *src_fmt = *mf;
1093 }
1094
1095 mutex_unlock(&fimc->lock);
1096 return 0;
1097 }
1098
1099 if (fmt->pad == FLITE_SD_PAD_SINK) {
1100 sink->f_width = mf->width;
1101 sink->f_height = mf->height;
1102 sink->fmt = ffmt;
1103 /* Set sink crop rectangle */
1104 sink->rect.width = mf->width;
1105 sink->rect.height = mf->height;
1106 sink->rect.left = 0;
1107 sink->rect.top = 0;
1108 /* Reset source format and crop rectangle */
1109 source->rect = sink->rect;
1110 source->f_width = mf->width;
1111 source->f_height = mf->height;
1112 }
1113
1114 mutex_unlock(&fimc->lock);
1115 return 0;
1116 }
1117
fimc_lite_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)1118 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1119 struct v4l2_subdev_pad_config *cfg,
1120 struct v4l2_subdev_selection *sel)
1121 {
1122 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1123 struct flite_frame *f = &fimc->inp_frame;
1124
1125 if ((sel->target != V4L2_SEL_TGT_CROP &&
1126 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1127 sel->pad != FLITE_SD_PAD_SINK)
1128 return -EINVAL;
1129
1130 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1131 sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
1132 return 0;
1133 }
1134
1135 mutex_lock(&fimc->lock);
1136 if (sel->target == V4L2_SEL_TGT_CROP) {
1137 sel->r = f->rect;
1138 } else {
1139 sel->r.left = 0;
1140 sel->r.top = 0;
1141 sel->r.width = f->f_width;
1142 sel->r.height = f->f_height;
1143 }
1144 mutex_unlock(&fimc->lock);
1145
1146 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1147 __func__, f->rect.left, f->rect.top, f->rect.width,
1148 f->rect.height, f->f_width, f->f_height);
1149
1150 return 0;
1151 }
1152
fimc_lite_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)1153 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1154 struct v4l2_subdev_pad_config *cfg,
1155 struct v4l2_subdev_selection *sel)
1156 {
1157 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1158 struct flite_frame *f = &fimc->inp_frame;
1159 int ret = 0;
1160
1161 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1162 return -EINVAL;
1163
1164 mutex_lock(&fimc->lock);
1165 fimc_lite_try_crop(fimc, &sel->r);
1166
1167 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1168 *v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r;
1169 } else {
1170 unsigned long flags;
1171 spin_lock_irqsave(&fimc->slock, flags);
1172 f->rect = sel->r;
1173 /* Same crop rectangle on the source pad */
1174 fimc->out_frame.rect = sel->r;
1175 set_bit(ST_FLITE_CONFIG, &fimc->state);
1176 spin_unlock_irqrestore(&fimc->slock, flags);
1177 }
1178 mutex_unlock(&fimc->lock);
1179
1180 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1181 __func__, f->rect.left, f->rect.top, f->rect.width,
1182 f->rect.height, f->f_width, f->f_height);
1183
1184 return ret;
1185 }
1186
fimc_lite_subdev_s_stream(struct v4l2_subdev * sd,int on)1187 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1188 {
1189 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1190 unsigned long flags;
1191 int ret;
1192
1193 /*
1194 * Find sensor subdev linked to FIMC-LITE directly or through
1195 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1196 * is used as a subdev only and feeds data internally to FIMC-IS.
1197 * The pipeline links are protected through entity.stream_count
1198 * so there is no need to take the media graph mutex here.
1199 */
1200 fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1201
1202 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1203 return -ENOIOCTLCMD;
1204
1205 mutex_lock(&fimc->lock);
1206 if (on) {
1207 flite_hw_reset(fimc);
1208 ret = fimc_lite_hw_init(fimc, true);
1209 if (!ret) {
1210 spin_lock_irqsave(&fimc->slock, flags);
1211 flite_hw_capture_start(fimc);
1212 spin_unlock_irqrestore(&fimc->slock, flags);
1213 }
1214 } else {
1215 set_bit(ST_FLITE_OFF, &fimc->state);
1216
1217 spin_lock_irqsave(&fimc->slock, flags);
1218 flite_hw_capture_stop(fimc);
1219 spin_unlock_irqrestore(&fimc->slock, flags);
1220
1221 ret = wait_event_timeout(fimc->irq_queue,
1222 !test_bit(ST_FLITE_OFF, &fimc->state),
1223 msecs_to_jiffies(200));
1224 if (ret == 0)
1225 v4l2_err(sd, "s_stream(0) timeout\n");
1226 clear_bit(ST_FLITE_RUN, &fimc->state);
1227 }
1228
1229 mutex_unlock(&fimc->lock);
1230 return ret;
1231 }
1232
fimc_lite_log_status(struct v4l2_subdev * sd)1233 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1234 {
1235 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1236
1237 flite_hw_dump_regs(fimc, __func__);
1238 return 0;
1239 }
1240
fimc_lite_subdev_registered(struct v4l2_subdev * sd)1241 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1242 {
1243 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1244 struct vb2_queue *q = &fimc->vb_queue;
1245 struct video_device *vfd = &fimc->ve.vdev;
1246 int ret;
1247
1248 memset(vfd, 0, sizeof(*vfd));
1249 atomic_set(&fimc->out_path, FIMC_IO_DMA);
1250
1251 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1252 fimc->index);
1253
1254 vfd->fops = &fimc_lite_fops;
1255 vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1256 vfd->v4l2_dev = sd->v4l2_dev;
1257 vfd->minor = -1;
1258 vfd->release = video_device_release_empty;
1259 vfd->queue = q;
1260 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
1261 fimc->reqbufs_count = 0;
1262
1263 INIT_LIST_HEAD(&fimc->pending_buf_q);
1264 INIT_LIST_HEAD(&fimc->active_buf_q);
1265
1266 memset(q, 0, sizeof(*q));
1267 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1268 q->io_modes = VB2_MMAP | VB2_USERPTR;
1269 q->ops = &fimc_lite_qops;
1270 q->mem_ops = &vb2_dma_contig_memops;
1271 q->buf_struct_size = sizeof(struct flite_buffer);
1272 q->drv_priv = fimc;
1273 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1274 q->lock = &fimc->lock;
1275 q->dev = &fimc->pdev->dev;
1276
1277 ret = vb2_queue_init(q);
1278 if (ret < 0)
1279 return ret;
1280
1281 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1282 ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
1283 if (ret < 0)
1284 return ret;
1285
1286 video_set_drvdata(vfd, fimc);
1287 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1288
1289 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1290 if (ret < 0) {
1291 media_entity_cleanup(&vfd->entity);
1292 fimc->ve.pipe = NULL;
1293 return ret;
1294 }
1295
1296 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1297 vfd->name, video_device_node_name(vfd));
1298 return 0;
1299 }
1300
fimc_lite_subdev_unregistered(struct v4l2_subdev * sd)1301 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1302 {
1303 struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1304
1305 if (fimc == NULL)
1306 return;
1307
1308 mutex_lock(&fimc->lock);
1309
1310 if (video_is_registered(&fimc->ve.vdev)) {
1311 video_unregister_device(&fimc->ve.vdev);
1312 media_entity_cleanup(&fimc->ve.vdev.entity);
1313 fimc->ve.pipe = NULL;
1314 }
1315
1316 mutex_unlock(&fimc->lock);
1317 }
1318
1319 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1320 .registered = fimc_lite_subdev_registered,
1321 .unregistered = fimc_lite_subdev_unregistered,
1322 };
1323
1324 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1325 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1326 .get_selection = fimc_lite_subdev_get_selection,
1327 .set_selection = fimc_lite_subdev_set_selection,
1328 .get_fmt = fimc_lite_subdev_get_fmt,
1329 .set_fmt = fimc_lite_subdev_set_fmt,
1330 };
1331
1332 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1333 .s_stream = fimc_lite_subdev_s_stream,
1334 };
1335
1336 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1337 .log_status = fimc_lite_log_status,
1338 };
1339
1340 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1341 .core = &fimc_lite_core_ops,
1342 .video = &fimc_lite_subdev_video_ops,
1343 .pad = &fimc_lite_subdev_pad_ops,
1344 };
1345
fimc_lite_s_ctrl(struct v4l2_ctrl * ctrl)1346 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1347 {
1348 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1349 ctrl_handler);
1350 set_bit(ST_FLITE_CONFIG, &fimc->state);
1351 return 0;
1352 }
1353
1354 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1355 .s_ctrl = fimc_lite_s_ctrl,
1356 };
1357
1358 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1359 .ops = &fimc_lite_ctrl_ops,
1360 .id = V4L2_CTRL_CLASS_USER | 0x1001,
1361 .type = V4L2_CTRL_TYPE_BOOLEAN,
1362 .name = "Test Pattern 640x480",
1363 .step = 1,
1364 };
1365
fimc_lite_set_default_config(struct fimc_lite * fimc)1366 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1367 {
1368 struct flite_frame *sink = &fimc->inp_frame;
1369 struct flite_frame *source = &fimc->out_frame;
1370
1371 sink->fmt = &fimc_lite_formats[0];
1372 sink->f_width = FLITE_DEFAULT_WIDTH;
1373 sink->f_height = FLITE_DEFAULT_HEIGHT;
1374
1375 sink->rect.width = FLITE_DEFAULT_WIDTH;
1376 sink->rect.height = FLITE_DEFAULT_HEIGHT;
1377 sink->rect.left = 0;
1378 sink->rect.top = 0;
1379
1380 *source = *sink;
1381 }
1382
fimc_lite_create_capture_subdev(struct fimc_lite * fimc)1383 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1384 {
1385 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1386 struct v4l2_subdev *sd = &fimc->subdev;
1387 int ret;
1388
1389 v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1390 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1391 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1392
1393 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1394 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1395 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1396 ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
1397 fimc->subdev_pads);
1398 if (ret)
1399 return ret;
1400
1401 v4l2_ctrl_handler_init(handler, 1);
1402 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1403 NULL);
1404 if (handler->error) {
1405 media_entity_cleanup(&sd->entity);
1406 return handler->error;
1407 }
1408
1409 sd->ctrl_handler = handler;
1410 sd->internal_ops = &fimc_lite_subdev_internal_ops;
1411 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1412 sd->entity.ops = &fimc_lite_subdev_media_ops;
1413 sd->owner = THIS_MODULE;
1414 v4l2_set_subdevdata(sd, fimc);
1415
1416 return 0;
1417 }
1418
fimc_lite_unregister_capture_subdev(struct fimc_lite * fimc)1419 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1420 {
1421 struct v4l2_subdev *sd = &fimc->subdev;
1422
1423 v4l2_device_unregister_subdev(sd);
1424 media_entity_cleanup(&sd->entity);
1425 v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1426 v4l2_set_subdevdata(sd, NULL);
1427 }
1428
fimc_lite_clk_put(struct fimc_lite * fimc)1429 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1430 {
1431 if (IS_ERR(fimc->clock))
1432 return;
1433
1434 clk_put(fimc->clock);
1435 fimc->clock = ERR_PTR(-EINVAL);
1436 }
1437
fimc_lite_clk_get(struct fimc_lite * fimc)1438 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1439 {
1440 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1441 return PTR_ERR_OR_ZERO(fimc->clock);
1442 }
1443
1444 static const struct of_device_id flite_of_match[];
1445
fimc_lite_probe(struct platform_device * pdev)1446 static int fimc_lite_probe(struct platform_device *pdev)
1447 {
1448 struct flite_drvdata *drv_data = NULL;
1449 struct device *dev = &pdev->dev;
1450 const struct of_device_id *of_id;
1451 struct fimc_lite *fimc;
1452 struct resource *res;
1453 int ret;
1454
1455 if (!dev->of_node)
1456 return -ENODEV;
1457
1458 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1459 if (!fimc)
1460 return -ENOMEM;
1461
1462 of_id = of_match_node(flite_of_match, dev->of_node);
1463 if (of_id)
1464 drv_data = (struct flite_drvdata *)of_id->data;
1465 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1466
1467 if (!drv_data || fimc->index >= drv_data->num_instances ||
1468 fimc->index < 0) {
1469 dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
1470 return -EINVAL;
1471 }
1472
1473 fimc->dd = drv_data;
1474 fimc->pdev = pdev;
1475
1476 init_waitqueue_head(&fimc->irq_queue);
1477 spin_lock_init(&fimc->slock);
1478 mutex_init(&fimc->lock);
1479
1480 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1481 fimc->regs = devm_ioremap_resource(dev, res);
1482 if (IS_ERR(fimc->regs))
1483 return PTR_ERR(fimc->regs);
1484
1485 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1486 if (res == NULL) {
1487 dev_err(dev, "Failed to get IRQ resource\n");
1488 return -ENXIO;
1489 }
1490
1491 ret = fimc_lite_clk_get(fimc);
1492 if (ret)
1493 return ret;
1494
1495 ret = devm_request_irq(dev, res->start, flite_irq_handler,
1496 0, dev_name(dev), fimc);
1497 if (ret) {
1498 dev_err(dev, "Failed to install irq (%d)\n", ret);
1499 goto err_clk_put;
1500 }
1501
1502 /* The video node will be created within the subdev's registered() op */
1503 ret = fimc_lite_create_capture_subdev(fimc);
1504 if (ret)
1505 goto err_clk_put;
1506
1507 platform_set_drvdata(pdev, fimc);
1508 pm_runtime_enable(dev);
1509
1510 if (!pm_runtime_enabled(dev)) {
1511 ret = clk_prepare_enable(fimc->clock);
1512 if (ret < 0)
1513 goto err_sd;
1514 }
1515
1516 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1517
1518 fimc_lite_set_default_config(fimc);
1519
1520 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1521 fimc->index);
1522 return 0;
1523
1524 err_sd:
1525 fimc_lite_unregister_capture_subdev(fimc);
1526 err_clk_put:
1527 fimc_lite_clk_put(fimc);
1528 return ret;
1529 }
1530
1531 #ifdef CONFIG_PM
fimc_lite_runtime_resume(struct device * dev)1532 static int fimc_lite_runtime_resume(struct device *dev)
1533 {
1534 struct fimc_lite *fimc = dev_get_drvdata(dev);
1535
1536 clk_prepare_enable(fimc->clock);
1537 return 0;
1538 }
1539
fimc_lite_runtime_suspend(struct device * dev)1540 static int fimc_lite_runtime_suspend(struct device *dev)
1541 {
1542 struct fimc_lite *fimc = dev_get_drvdata(dev);
1543
1544 clk_disable_unprepare(fimc->clock);
1545 return 0;
1546 }
1547 #endif
1548
1549 #ifdef CONFIG_PM_SLEEP
fimc_lite_resume(struct device * dev)1550 static int fimc_lite_resume(struct device *dev)
1551 {
1552 struct fimc_lite *fimc = dev_get_drvdata(dev);
1553 struct flite_buffer *buf;
1554 unsigned long flags;
1555 int i;
1556
1557 spin_lock_irqsave(&fimc->slock, flags);
1558 if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1559 !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1560 spin_unlock_irqrestore(&fimc->slock, flags);
1561 return 0;
1562 }
1563 flite_hw_reset(fimc);
1564 spin_unlock_irqrestore(&fimc->slock, flags);
1565
1566 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1567 return 0;
1568
1569 INIT_LIST_HEAD(&fimc->active_buf_q);
1570 fimc_pipeline_call(&fimc->ve, open,
1571 &fimc->ve.vdev.entity, false);
1572 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1573 clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1574
1575 for (i = 0; i < fimc->reqbufs_count; i++) {
1576 if (list_empty(&fimc->pending_buf_q))
1577 break;
1578 buf = fimc_lite_pending_queue_pop(fimc);
1579 buffer_queue(&buf->vb.vb2_buf);
1580 }
1581 return 0;
1582 }
1583
fimc_lite_suspend(struct device * dev)1584 static int fimc_lite_suspend(struct device *dev)
1585 {
1586 struct fimc_lite *fimc = dev_get_drvdata(dev);
1587 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1588 int ret;
1589
1590 if (test_and_set_bit(ST_LPM, &fimc->state))
1591 return 0;
1592
1593 ret = fimc_lite_stop_capture(fimc, suspend);
1594 if (ret < 0 || !fimc_lite_active(fimc))
1595 return ret;
1596
1597 return fimc_pipeline_call(&fimc->ve, close);
1598 }
1599 #endif /* CONFIG_PM_SLEEP */
1600
fimc_lite_remove(struct platform_device * pdev)1601 static int fimc_lite_remove(struct platform_device *pdev)
1602 {
1603 struct fimc_lite *fimc = platform_get_drvdata(pdev);
1604 struct device *dev = &pdev->dev;
1605
1606 if (!pm_runtime_enabled(dev))
1607 clk_disable_unprepare(fimc->clock);
1608
1609 pm_runtime_disable(dev);
1610 pm_runtime_set_suspended(dev);
1611 fimc_lite_unregister_capture_subdev(fimc);
1612 vb2_dma_contig_clear_max_seg_size(dev);
1613 fimc_lite_clk_put(fimc);
1614
1615 dev_info(dev, "Driver unloaded\n");
1616 return 0;
1617 }
1618
1619 static const struct dev_pm_ops fimc_lite_pm_ops = {
1620 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1621 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1622 NULL)
1623 };
1624
1625 /* EXYNOS4412 */
1626 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1627 .max_width = 8192,
1628 .max_height = 8192,
1629 .out_width_align = 8,
1630 .win_hor_offs_align = 2,
1631 .out_hor_offs_align = 8,
1632 .max_dma_bufs = 1,
1633 .num_instances = 2,
1634 };
1635
1636 /* EXYNOS5250 */
1637 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1638 .max_width = 8192,
1639 .max_height = 8192,
1640 .out_width_align = 8,
1641 .win_hor_offs_align = 2,
1642 .out_hor_offs_align = 8,
1643 .max_dma_bufs = 32,
1644 .num_instances = 3,
1645 };
1646
1647 static const struct of_device_id flite_of_match[] = {
1648 {
1649 .compatible = "samsung,exynos4212-fimc-lite",
1650 .data = &fimc_lite_drvdata_exynos4,
1651 },
1652 {
1653 .compatible = "samsung,exynos5250-fimc-lite",
1654 .data = &fimc_lite_drvdata_exynos5,
1655 },
1656 { /* sentinel */ },
1657 };
1658 MODULE_DEVICE_TABLE(of, flite_of_match);
1659
1660 static struct platform_driver fimc_lite_driver = {
1661 .probe = fimc_lite_probe,
1662 .remove = fimc_lite_remove,
1663 .driver = {
1664 .of_match_table = flite_of_match,
1665 .name = FIMC_LITE_DRV_NAME,
1666 .pm = &fimc_lite_pm_ops,
1667 }
1668 };
1669 module_platform_driver(fimc_lite_driver);
1670 MODULE_LICENSE("GPL");
1671 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
1672