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->addr = vb2_dma_contig_plane_dma_addr(vb, 0);
413 
414 	buf->index = fimc->buf_index++;
415 	if (fimc->buf_index >= fimc->reqbufs_count)
416 		fimc->buf_index = 0;
417 
418 	if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
419 	    !test_bit(ST_FLITE_STREAM, &fimc->state) &&
420 	    list_empty(&fimc->active_buf_q)) {
421 		flite_hw_set_dma_buffer(fimc, buf);
422 		fimc_lite_active_queue_add(fimc, buf);
423 	} else {
424 		fimc_lite_pending_queue_add(fimc, buf);
425 	}
426 
427 	if (vb2_is_streaming(&fimc->vb_queue) &&
428 	    !list_empty(&fimc->pending_buf_q) &&
429 	    !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
430 		flite_hw_capture_start(fimc);
431 		spin_unlock_irqrestore(&fimc->slock, flags);
432 
433 		if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
434 			fimc_pipeline_call(&fimc->ve, set_stream, 1);
435 		return;
436 	}
437 	spin_unlock_irqrestore(&fimc->slock, flags);
438 }
439 
440 static const struct vb2_ops fimc_lite_qops = {
441 	.queue_setup	 = queue_setup,
442 	.buf_prepare	 = buffer_prepare,
443 	.buf_queue	 = buffer_queue,
444 	.wait_prepare	 = vb2_ops_wait_prepare,
445 	.wait_finish	 = vb2_ops_wait_finish,
446 	.start_streaming = start_streaming,
447 	.stop_streaming	 = stop_streaming,
448 };
449 
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 			video_device_pipeline_stop(&fimc->ve.vdev);
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_state * sd_state,struct v4l2_subdev_format * format)552 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
553 					struct v4l2_subdev_state *sd_state,
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,
578 							      sd_state,
579 							      FLITE_SD_PAD_SINK);
580 
581 			mf->code = sink_fmt->code;
582 			mf->colorspace = sink_fmt->colorspace;
583 
584 			rect = v4l2_subdev_get_try_crop(&fimc->subdev,
585 							sd_state,
586 							FLITE_SD_PAD_SINK);
587 		} else {
588 			mf->code = sink->fmt->mbus_code;
589 			mf->colorspace = sink->fmt->colorspace;
590 			rect = &sink->rect;
591 		}
592 
593 		/* Allow changing format only on sink pad */
594 		mf->width = rect->width;
595 		mf->height = rect->height;
596 	}
597 
598 	mf->field = V4L2_FIELD_NONE;
599 
600 	v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
601 		 mf->code, mf->colorspace, mf->width, mf->height);
602 
603 	return fmt;
604 }
605 
fimc_lite_try_crop(struct fimc_lite * fimc,struct v4l2_rect * r)606 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
607 {
608 	struct flite_frame *frame = &fimc->inp_frame;
609 
610 	v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
611 			      &r->height, 0, frame->f_height, 0, 0);
612 
613 	/* Adjust left/top if cropping rectangle got out of bounds */
614 	r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
615 	r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
616 	r->top  = clamp_t(u32, r->top, 0, frame->f_height - r->height);
617 
618 	v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
619 		 r->left, r->top, r->width, r->height,
620 		 frame->f_width, frame->f_height);
621 }
622 
fimc_lite_try_compose(struct fimc_lite * fimc,struct v4l2_rect * r)623 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
624 {
625 	struct flite_frame *frame = &fimc->out_frame;
626 	struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
627 
628 	/* Scaling is not supported so we enforce compose rectangle size
629 	   same as size of the sink crop rectangle. */
630 	r->width = crop_rect->width;
631 	r->height = crop_rect->height;
632 
633 	/* Adjust left/top if the composing rectangle got out of bounds */
634 	r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
635 	r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
636 	r->top  = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
637 
638 	v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
639 		 r->left, r->top, r->width, r->height,
640 		 frame->f_width, frame->f_height);
641 }
642 
643 /*
644  * Video node ioctl operations
645  */
fimc_lite_querycap(struct file * file,void * priv,struct v4l2_capability * cap)646 static int fimc_lite_querycap(struct file *file, void *priv,
647 					struct v4l2_capability *cap)
648 {
649 	strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
650 	strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
651 	return 0;
652 }
653 
fimc_lite_enum_fmt(struct file * file,void * priv,struct v4l2_fmtdesc * f)654 static int fimc_lite_enum_fmt(struct file *file, void *priv,
655 			      struct v4l2_fmtdesc *f)
656 {
657 	const struct fimc_fmt *fmt;
658 
659 	if (f->index >= ARRAY_SIZE(fimc_lite_formats))
660 		return -EINVAL;
661 
662 	fmt = &fimc_lite_formats[f->index];
663 	f->pixelformat = fmt->fourcc;
664 
665 	return 0;
666 }
667 
fimc_lite_g_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)668 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
669 				  struct v4l2_format *f)
670 {
671 	struct fimc_lite *fimc = video_drvdata(file);
672 	struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
673 	struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
674 	struct flite_frame *frame = &fimc->out_frame;
675 	const struct fimc_fmt *fmt = frame->fmt;
676 
677 	plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
678 	plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
679 
680 	pixm->num_planes = fmt->memplanes;
681 	pixm->pixelformat = fmt->fourcc;
682 	pixm->width = frame->f_width;
683 	pixm->height = frame->f_height;
684 	pixm->field = V4L2_FIELD_NONE;
685 	pixm->colorspace = fmt->colorspace;
686 	return 0;
687 }
688 
fimc_lite_try_fmt(struct fimc_lite * fimc,struct v4l2_pix_format_mplane * pixm,const struct fimc_fmt ** ffmt)689 static int fimc_lite_try_fmt(struct fimc_lite *fimc,
690 			     struct v4l2_pix_format_mplane *pixm,
691 			     const struct fimc_fmt **ffmt)
692 {
693 	u32 bpl = pixm->plane_fmt[0].bytesperline;
694 	struct flite_drvdata *dd = fimc->dd;
695 	const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
696 	const struct fimc_fmt *fmt;
697 
698 	if (WARN_ON(inp_fmt == NULL))
699 		return -EINVAL;
700 	/*
701 	 * We allow some flexibility only for YUV formats. In case of raw
702 	 * raw Bayer the FIMC-LITE's output format must match its camera
703 	 * interface input format.
704 	 */
705 	if (inp_fmt->flags & FMT_FLAGS_YUV)
706 		fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
707 						inp_fmt->flags, 0);
708 	else
709 		fmt = inp_fmt;
710 
711 	if (WARN_ON(fmt == NULL))
712 		return -EINVAL;
713 	if (ffmt)
714 		*ffmt = fmt;
715 	v4l_bound_align_image(&pixm->width, 8, dd->max_width,
716 			      ffs(dd->out_width_align) - 1,
717 			      &pixm->height, 0, dd->max_height, 0, 0);
718 
719 	if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
720 		pixm->plane_fmt[0].bytesperline = (pixm->width *
721 						   fmt->depth[0]) / 8;
722 
723 	if (pixm->plane_fmt[0].sizeimage == 0)
724 		pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
725 						fmt->depth[0]) / 8;
726 	pixm->num_planes = fmt->memplanes;
727 	pixm->pixelformat = fmt->fourcc;
728 	pixm->colorspace = fmt->colorspace;
729 	pixm->field = V4L2_FIELD_NONE;
730 	return 0;
731 }
732 
fimc_lite_try_fmt_mplane(struct file * file,void * fh,struct v4l2_format * f)733 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
734 				    struct v4l2_format *f)
735 {
736 	struct fimc_lite *fimc = video_drvdata(file);
737 	return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
738 }
739 
fimc_lite_s_fmt_mplane(struct file * file,void * priv,struct v4l2_format * f)740 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
741 				  struct v4l2_format *f)
742 {
743 	struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
744 	struct fimc_lite *fimc = video_drvdata(file);
745 	struct flite_frame *frame = &fimc->out_frame;
746 	const struct fimc_fmt *fmt = NULL;
747 	int ret;
748 
749 	if (vb2_is_busy(&fimc->vb_queue))
750 		return -EBUSY;
751 
752 	ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
753 	if (ret < 0)
754 		return ret;
755 
756 	frame->fmt = fmt;
757 	fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
758 			       pixm->plane_fmt[0].sizeimage);
759 	frame->f_width = pixm->width;
760 	frame->f_height = pixm->height;
761 
762 	return 0;
763 }
764 
fimc_pipeline_validate(struct fimc_lite * fimc)765 static int fimc_pipeline_validate(struct fimc_lite *fimc)
766 {
767 	struct v4l2_subdev *sd = &fimc->subdev;
768 	struct v4l2_subdev_format sink_fmt = {
769 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
770 	};
771 	struct v4l2_subdev_format src_fmt = {
772 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
773 	};
774 	struct media_pad *pad;
775 	int ret;
776 
777 	while (1) {
778 		/* Retrieve format at the sink pad */
779 		pad = &sd->entity.pads[0];
780 		if (!(pad->flags & MEDIA_PAD_FL_SINK))
781 			break;
782 		/* Don't call FIMC subdev operation to avoid nested locking */
783 		if (sd == &fimc->subdev) {
784 			struct flite_frame *ff = &fimc->out_frame;
785 			sink_fmt.format.width = ff->f_width;
786 			sink_fmt.format.height = ff->f_height;
787 			sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
788 		} else {
789 			sink_fmt.pad = pad->index;
790 			ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
791 					       &sink_fmt);
792 			if (ret < 0 && ret != -ENOIOCTLCMD)
793 				return -EPIPE;
794 		}
795 		/* Retrieve format at the source pad */
796 		pad = media_pad_remote_pad_first(pad);
797 		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
798 			break;
799 
800 		sd = media_entity_to_v4l2_subdev(pad->entity);
801 		src_fmt.pad = pad->index;
802 		ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
803 		if (ret < 0 && ret != -ENOIOCTLCMD)
804 			return -EPIPE;
805 
806 		if (src_fmt.format.width != sink_fmt.format.width ||
807 		    src_fmt.format.height != sink_fmt.format.height ||
808 		    src_fmt.format.code != sink_fmt.format.code)
809 			return -EPIPE;
810 	}
811 	return 0;
812 }
813 
fimc_lite_streamon(struct file * file,void * priv,enum v4l2_buf_type type)814 static int fimc_lite_streamon(struct file *file, void *priv,
815 			      enum v4l2_buf_type type)
816 {
817 	struct fimc_lite *fimc = video_drvdata(file);
818 	int ret;
819 
820 	if (fimc_lite_active(fimc))
821 		return -EBUSY;
822 
823 	ret = video_device_pipeline_start(&fimc->ve.vdev, &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 	video_device_pipeline_stop(&fimc->ve.vdev);
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 	video_device_pipeline_stop(&fimc->ve.vdev);
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_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)1004 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
1005 					   struct v4l2_subdev_state *sd_state,
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_state * sd_state,unsigned int pad)1017 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
1018 		struct v4l2_subdev *sd,
1019 		struct v4l2_subdev_state *sd_state, 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, sd_state, pad);
1025 }
1026 
fimc_lite_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1027 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
1028 				    struct v4l2_subdev_state *sd_state,
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, sd_state, 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_state * sd_state,struct v4l2_subdev_format * fmt)1058 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
1059 				    struct v4l2_subdev_state *sd_state,
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 	    media_entity_is_streaming(&sd->entity)) ||
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, sd_state, 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, sd_state, 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, sd_state,
1092 								 pad);
1093 			*src_fmt = *mf;
1094 		}
1095 
1096 		mutex_unlock(&fimc->lock);
1097 		return 0;
1098 	}
1099 
1100 	if (fmt->pad == FLITE_SD_PAD_SINK) {
1101 		sink->f_width = mf->width;
1102 		sink->f_height = mf->height;
1103 		sink->fmt = ffmt;
1104 		/* Set sink crop rectangle */
1105 		sink->rect.width = mf->width;
1106 		sink->rect.height = mf->height;
1107 		sink->rect.left = 0;
1108 		sink->rect.top = 0;
1109 		/* Reset source format and crop rectangle */
1110 		source->rect = sink->rect;
1111 		source->f_width = mf->width;
1112 		source->f_height = mf->height;
1113 	}
1114 
1115 	mutex_unlock(&fimc->lock);
1116 	return 0;
1117 }
1118 
fimc_lite_subdev_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1119 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
1120 					  struct v4l2_subdev_state *sd_state,
1121 					  struct v4l2_subdev_selection *sel)
1122 {
1123 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1124 	struct flite_frame *f = &fimc->inp_frame;
1125 
1126 	if ((sel->target != V4L2_SEL_TGT_CROP &&
1127 	     sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
1128 	     sel->pad != FLITE_SD_PAD_SINK)
1129 		return -EINVAL;
1130 
1131 	if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1132 		sel->r = *v4l2_subdev_get_try_crop(sd, sd_state, sel->pad);
1133 		return 0;
1134 	}
1135 
1136 	mutex_lock(&fimc->lock);
1137 	if (sel->target == V4L2_SEL_TGT_CROP) {
1138 		sel->r = f->rect;
1139 	} else {
1140 		sel->r.left = 0;
1141 		sel->r.top = 0;
1142 		sel->r.width = f->f_width;
1143 		sel->r.height = f->f_height;
1144 	}
1145 	mutex_unlock(&fimc->lock);
1146 
1147 	v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1148 		 __func__, f->rect.left, f->rect.top, f->rect.width,
1149 		 f->rect.height, f->f_width, f->f_height);
1150 
1151 	return 0;
1152 }
1153 
fimc_lite_subdev_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)1154 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
1155 					  struct v4l2_subdev_state *sd_state,
1156 					  struct v4l2_subdev_selection *sel)
1157 {
1158 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1159 	struct flite_frame *f = &fimc->inp_frame;
1160 	int ret = 0;
1161 
1162 	if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
1163 		return -EINVAL;
1164 
1165 	mutex_lock(&fimc->lock);
1166 	fimc_lite_try_crop(fimc, &sel->r);
1167 
1168 	if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
1169 		*v4l2_subdev_get_try_crop(sd, sd_state, sel->pad) = sel->r;
1170 	} else {
1171 		unsigned long flags;
1172 		spin_lock_irqsave(&fimc->slock, flags);
1173 		f->rect = sel->r;
1174 		/* Same crop rectangle on the source pad */
1175 		fimc->out_frame.rect = sel->r;
1176 		set_bit(ST_FLITE_CONFIG, &fimc->state);
1177 		spin_unlock_irqrestore(&fimc->slock, flags);
1178 	}
1179 	mutex_unlock(&fimc->lock);
1180 
1181 	v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
1182 		 __func__, f->rect.left, f->rect.top, f->rect.width,
1183 		 f->rect.height, f->f_width, f->f_height);
1184 
1185 	return ret;
1186 }
1187 
fimc_lite_subdev_s_stream(struct v4l2_subdev * sd,int on)1188 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
1189 {
1190 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1191 	unsigned long flags;
1192 	int ret;
1193 
1194 	/*
1195 	 * Find sensor subdev linked to FIMC-LITE directly or through
1196 	 * MIPI-CSIS. This is required for configuration where FIMC-LITE
1197 	 * is used as a subdev only and feeds data internally to FIMC-IS.
1198 	 * The pipeline links are protected through entity.pipe so there is no
1199 	 * need to take the media graph mutex here.
1200 	 */
1201 	fimc->sensor = fimc_find_remote_sensor(&sd->entity);
1202 
1203 	if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
1204 		return -ENOIOCTLCMD;
1205 
1206 	mutex_lock(&fimc->lock);
1207 	if (on) {
1208 		flite_hw_reset(fimc);
1209 		ret = fimc_lite_hw_init(fimc, true);
1210 		if (!ret) {
1211 			spin_lock_irqsave(&fimc->slock, flags);
1212 			flite_hw_capture_start(fimc);
1213 			spin_unlock_irqrestore(&fimc->slock, flags);
1214 		}
1215 	} else {
1216 		set_bit(ST_FLITE_OFF, &fimc->state);
1217 
1218 		spin_lock_irqsave(&fimc->slock, flags);
1219 		flite_hw_capture_stop(fimc);
1220 		spin_unlock_irqrestore(&fimc->slock, flags);
1221 
1222 		ret = wait_event_timeout(fimc->irq_queue,
1223 				!test_bit(ST_FLITE_OFF, &fimc->state),
1224 				msecs_to_jiffies(200));
1225 		if (ret == 0)
1226 			v4l2_err(sd, "s_stream(0) timeout\n");
1227 		clear_bit(ST_FLITE_RUN, &fimc->state);
1228 	}
1229 
1230 	mutex_unlock(&fimc->lock);
1231 	return ret;
1232 }
1233 
fimc_lite_log_status(struct v4l2_subdev * sd)1234 static int fimc_lite_log_status(struct v4l2_subdev *sd)
1235 {
1236 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1237 
1238 	flite_hw_dump_regs(fimc, __func__);
1239 	return 0;
1240 }
1241 
fimc_lite_subdev_registered(struct v4l2_subdev * sd)1242 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
1243 {
1244 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1245 	struct vb2_queue *q = &fimc->vb_queue;
1246 	struct video_device *vfd = &fimc->ve.vdev;
1247 	int ret;
1248 
1249 	memset(vfd, 0, sizeof(*vfd));
1250 	atomic_set(&fimc->out_path, FIMC_IO_DMA);
1251 
1252 	snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
1253 		 fimc->index);
1254 
1255 	vfd->fops = &fimc_lite_fops;
1256 	vfd->ioctl_ops = &fimc_lite_ioctl_ops;
1257 	vfd->v4l2_dev = sd->v4l2_dev;
1258 	vfd->minor = -1;
1259 	vfd->release = video_device_release_empty;
1260 	vfd->queue = q;
1261 	vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
1262 	fimc->reqbufs_count = 0;
1263 
1264 	INIT_LIST_HEAD(&fimc->pending_buf_q);
1265 	INIT_LIST_HEAD(&fimc->active_buf_q);
1266 
1267 	memset(q, 0, sizeof(*q));
1268 	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1269 	q->io_modes = VB2_MMAP | VB2_USERPTR;
1270 	q->ops = &fimc_lite_qops;
1271 	q->mem_ops = &vb2_dma_contig_memops;
1272 	q->buf_struct_size = sizeof(struct flite_buffer);
1273 	q->drv_priv = fimc;
1274 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1275 	q->lock = &fimc->lock;
1276 	q->dev = &fimc->pdev->dev;
1277 
1278 	ret = vb2_queue_init(q);
1279 	if (ret < 0)
1280 		return ret;
1281 
1282 	fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
1283 	ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
1284 	if (ret < 0)
1285 		return ret;
1286 
1287 	video_set_drvdata(vfd, fimc);
1288 	fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
1289 
1290 	ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
1291 	if (ret < 0) {
1292 		media_entity_cleanup(&vfd->entity);
1293 		fimc->ve.pipe = NULL;
1294 		return ret;
1295 	}
1296 
1297 	v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
1298 		  vfd->name, video_device_node_name(vfd));
1299 	return 0;
1300 }
1301 
fimc_lite_subdev_unregistered(struct v4l2_subdev * sd)1302 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
1303 {
1304 	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
1305 
1306 	if (fimc == NULL)
1307 		return;
1308 
1309 	mutex_lock(&fimc->lock);
1310 
1311 	if (video_is_registered(&fimc->ve.vdev)) {
1312 		video_unregister_device(&fimc->ve.vdev);
1313 		media_entity_cleanup(&fimc->ve.vdev.entity);
1314 		fimc->ve.pipe = NULL;
1315 	}
1316 
1317 	mutex_unlock(&fimc->lock);
1318 }
1319 
1320 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
1321 	.registered = fimc_lite_subdev_registered,
1322 	.unregistered = fimc_lite_subdev_unregistered,
1323 };
1324 
1325 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
1326 	.enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
1327 	.get_selection = fimc_lite_subdev_get_selection,
1328 	.set_selection = fimc_lite_subdev_set_selection,
1329 	.get_fmt = fimc_lite_subdev_get_fmt,
1330 	.set_fmt = fimc_lite_subdev_set_fmt,
1331 };
1332 
1333 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
1334 	.s_stream = fimc_lite_subdev_s_stream,
1335 };
1336 
1337 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
1338 	.log_status = fimc_lite_log_status,
1339 };
1340 
1341 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
1342 	.core = &fimc_lite_core_ops,
1343 	.video = &fimc_lite_subdev_video_ops,
1344 	.pad = &fimc_lite_subdev_pad_ops,
1345 };
1346 
fimc_lite_s_ctrl(struct v4l2_ctrl * ctrl)1347 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
1348 {
1349 	struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
1350 					      ctrl_handler);
1351 	set_bit(ST_FLITE_CONFIG, &fimc->state);
1352 	return 0;
1353 }
1354 
1355 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
1356 	.s_ctrl	= fimc_lite_s_ctrl,
1357 };
1358 
1359 static const struct v4l2_ctrl_config fimc_lite_ctrl = {
1360 	.ops	= &fimc_lite_ctrl_ops,
1361 	.id	= V4L2_CTRL_CLASS_USER | 0x1001,
1362 	.type	= V4L2_CTRL_TYPE_BOOLEAN,
1363 	.name	= "Test Pattern 640x480",
1364 	.step	= 1,
1365 };
1366 
fimc_lite_set_default_config(struct fimc_lite * fimc)1367 static void fimc_lite_set_default_config(struct fimc_lite *fimc)
1368 {
1369 	struct flite_frame *sink = &fimc->inp_frame;
1370 	struct flite_frame *source = &fimc->out_frame;
1371 
1372 	sink->fmt = &fimc_lite_formats[0];
1373 	sink->f_width = FLITE_DEFAULT_WIDTH;
1374 	sink->f_height = FLITE_DEFAULT_HEIGHT;
1375 
1376 	sink->rect.width = FLITE_DEFAULT_WIDTH;
1377 	sink->rect.height = FLITE_DEFAULT_HEIGHT;
1378 	sink->rect.left = 0;
1379 	sink->rect.top = 0;
1380 
1381 	*source = *sink;
1382 }
1383 
fimc_lite_create_capture_subdev(struct fimc_lite * fimc)1384 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
1385 {
1386 	struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
1387 	struct v4l2_subdev *sd = &fimc->subdev;
1388 	int ret;
1389 
1390 	v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
1391 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1392 	snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
1393 
1394 	fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1395 	fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
1396 	fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
1397 	ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
1398 				fimc->subdev_pads);
1399 	if (ret)
1400 		return ret;
1401 
1402 	v4l2_ctrl_handler_init(handler, 1);
1403 	fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
1404 						  NULL);
1405 	if (handler->error) {
1406 		media_entity_cleanup(&sd->entity);
1407 		return handler->error;
1408 	}
1409 
1410 	sd->ctrl_handler = handler;
1411 	sd->internal_ops = &fimc_lite_subdev_internal_ops;
1412 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
1413 	sd->entity.ops = &fimc_lite_subdev_media_ops;
1414 	sd->owner = THIS_MODULE;
1415 	v4l2_set_subdevdata(sd, fimc);
1416 
1417 	return 0;
1418 }
1419 
fimc_lite_unregister_capture_subdev(struct fimc_lite * fimc)1420 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
1421 {
1422 	struct v4l2_subdev *sd = &fimc->subdev;
1423 
1424 	v4l2_device_unregister_subdev(sd);
1425 	media_entity_cleanup(&sd->entity);
1426 	v4l2_ctrl_handler_free(&fimc->ctrl_handler);
1427 	v4l2_set_subdevdata(sd, NULL);
1428 }
1429 
fimc_lite_clk_put(struct fimc_lite * fimc)1430 static void fimc_lite_clk_put(struct fimc_lite *fimc)
1431 {
1432 	if (IS_ERR(fimc->clock))
1433 		return;
1434 
1435 	clk_put(fimc->clock);
1436 	fimc->clock = ERR_PTR(-EINVAL);
1437 }
1438 
fimc_lite_clk_get(struct fimc_lite * fimc)1439 static int fimc_lite_clk_get(struct fimc_lite *fimc)
1440 {
1441 	fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
1442 	return PTR_ERR_OR_ZERO(fimc->clock);
1443 }
1444 
1445 static const struct of_device_id flite_of_match[];
1446 
fimc_lite_probe(struct platform_device * pdev)1447 static int fimc_lite_probe(struct platform_device *pdev)
1448 {
1449 	struct flite_drvdata *drv_data = NULL;
1450 	struct device *dev = &pdev->dev;
1451 	const struct of_device_id *of_id;
1452 	struct fimc_lite *fimc;
1453 	int ret;
1454 	int irq;
1455 
1456 	if (!dev->of_node)
1457 		return -ENODEV;
1458 
1459 	fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
1460 	if (!fimc)
1461 		return -ENOMEM;
1462 
1463 	of_id = of_match_node(flite_of_match, dev->of_node);
1464 	if (of_id)
1465 		drv_data = (struct flite_drvdata *)of_id->data;
1466 	fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
1467 
1468 	if (!drv_data || fimc->index >= drv_data->num_instances ||
1469 						fimc->index < 0) {
1470 		dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
1471 		return -EINVAL;
1472 	}
1473 
1474 	fimc->dd = drv_data;
1475 	fimc->pdev = pdev;
1476 
1477 	init_waitqueue_head(&fimc->irq_queue);
1478 	spin_lock_init(&fimc->slock);
1479 	mutex_init(&fimc->lock);
1480 
1481 	fimc->regs = devm_platform_ioremap_resource(pdev, 0);
1482 	if (IS_ERR(fimc->regs))
1483 		return PTR_ERR(fimc->regs);
1484 
1485 	irq = platform_get_irq(pdev, 0);
1486 	if (irq < 0)
1487 		return irq;
1488 
1489 	ret = fimc_lite_clk_get(fimc);
1490 	if (ret)
1491 		return ret;
1492 
1493 	ret = devm_request_irq(dev, irq, flite_irq_handler,
1494 			       0, dev_name(dev), fimc);
1495 	if (ret) {
1496 		dev_err(dev, "Failed to install irq (%d)\n", ret);
1497 		goto err_clk_put;
1498 	}
1499 
1500 	/* The video node will be created within the subdev's registered() op */
1501 	ret = fimc_lite_create_capture_subdev(fimc);
1502 	if (ret)
1503 		goto err_clk_put;
1504 
1505 	platform_set_drvdata(pdev, fimc);
1506 	pm_runtime_enable(dev);
1507 
1508 	if (!pm_runtime_enabled(dev)) {
1509 		ret = clk_prepare_enable(fimc->clock);
1510 		if (ret < 0)
1511 			goto err_sd;
1512 	}
1513 
1514 	vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
1515 
1516 	fimc_lite_set_default_config(fimc);
1517 
1518 	dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
1519 		fimc->index);
1520 	return 0;
1521 
1522 err_sd:
1523 	fimc_lite_unregister_capture_subdev(fimc);
1524 err_clk_put:
1525 	fimc_lite_clk_put(fimc);
1526 	return ret;
1527 }
1528 
1529 #ifdef CONFIG_PM
fimc_lite_runtime_resume(struct device * dev)1530 static int fimc_lite_runtime_resume(struct device *dev)
1531 {
1532 	struct fimc_lite *fimc = dev_get_drvdata(dev);
1533 
1534 	clk_prepare_enable(fimc->clock);
1535 	return 0;
1536 }
1537 
fimc_lite_runtime_suspend(struct device * dev)1538 static int fimc_lite_runtime_suspend(struct device *dev)
1539 {
1540 	struct fimc_lite *fimc = dev_get_drvdata(dev);
1541 
1542 	clk_disable_unprepare(fimc->clock);
1543 	return 0;
1544 }
1545 #endif
1546 
1547 #ifdef CONFIG_PM_SLEEP
fimc_lite_resume(struct device * dev)1548 static int fimc_lite_resume(struct device *dev)
1549 {
1550 	struct fimc_lite *fimc = dev_get_drvdata(dev);
1551 	struct flite_buffer *buf;
1552 	unsigned long flags;
1553 	int i;
1554 
1555 	spin_lock_irqsave(&fimc->slock, flags);
1556 	if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
1557 	    !test_bit(ST_FLITE_IN_USE, &fimc->state)) {
1558 		spin_unlock_irqrestore(&fimc->slock, flags);
1559 		return 0;
1560 	}
1561 	flite_hw_reset(fimc);
1562 	spin_unlock_irqrestore(&fimc->slock, flags);
1563 
1564 	if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
1565 		return 0;
1566 
1567 	INIT_LIST_HEAD(&fimc->active_buf_q);
1568 	fimc_pipeline_call(&fimc->ve, open,
1569 			   &fimc->ve.vdev.entity, false);
1570 	fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
1571 	clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
1572 
1573 	for (i = 0; i < fimc->reqbufs_count; i++) {
1574 		if (list_empty(&fimc->pending_buf_q))
1575 			break;
1576 		buf = fimc_lite_pending_queue_pop(fimc);
1577 		buffer_queue(&buf->vb.vb2_buf);
1578 	}
1579 	return 0;
1580 }
1581 
fimc_lite_suspend(struct device * dev)1582 static int fimc_lite_suspend(struct device *dev)
1583 {
1584 	struct fimc_lite *fimc = dev_get_drvdata(dev);
1585 	bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
1586 	int ret;
1587 
1588 	if (test_and_set_bit(ST_LPM, &fimc->state))
1589 		return 0;
1590 
1591 	ret = fimc_lite_stop_capture(fimc, suspend);
1592 	if (ret < 0 || !fimc_lite_active(fimc))
1593 		return ret;
1594 
1595 	return fimc_pipeline_call(&fimc->ve, close);
1596 }
1597 #endif /* CONFIG_PM_SLEEP */
1598 
fimc_lite_remove(struct platform_device * pdev)1599 static void fimc_lite_remove(struct platform_device *pdev)
1600 {
1601 	struct fimc_lite *fimc = platform_get_drvdata(pdev);
1602 	struct device *dev = &pdev->dev;
1603 
1604 	if (!pm_runtime_enabled(dev))
1605 		clk_disable_unprepare(fimc->clock);
1606 
1607 	pm_runtime_disable(dev);
1608 	pm_runtime_set_suspended(dev);
1609 	fimc_lite_unregister_capture_subdev(fimc);
1610 	vb2_dma_contig_clear_max_seg_size(dev);
1611 	fimc_lite_clk_put(fimc);
1612 
1613 	dev_info(dev, "Driver unloaded\n");
1614 }
1615 
1616 static const struct dev_pm_ops fimc_lite_pm_ops = {
1617 	SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
1618 	SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
1619 			   NULL)
1620 };
1621 
1622 /* EXYNOS4212, EXYNOS4412 */
1623 static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
1624 	.max_width		= 8192,
1625 	.max_height		= 8192,
1626 	.out_width_align	= 8,
1627 	.win_hor_offs_align	= 2,
1628 	.out_hor_offs_align	= 8,
1629 	.max_dma_bufs		= 1,
1630 	.num_instances		= 2,
1631 };
1632 
1633 /* EXYNOS5250 */
1634 static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
1635 	.max_width		= 8192,
1636 	.max_height		= 8192,
1637 	.out_width_align	= 8,
1638 	.win_hor_offs_align	= 2,
1639 	.out_hor_offs_align	= 8,
1640 	.max_dma_bufs		= 32,
1641 	.num_instances		= 3,
1642 };
1643 
1644 static const struct of_device_id flite_of_match[] = {
1645 	{
1646 		.compatible = "samsung,exynos4212-fimc-lite",
1647 		.data = &fimc_lite_drvdata_exynos4,
1648 	},
1649 	{
1650 		.compatible = "samsung,exynos5250-fimc-lite",
1651 		.data = &fimc_lite_drvdata_exynos5,
1652 	},
1653 	{ /* sentinel */ },
1654 };
1655 MODULE_DEVICE_TABLE(of, flite_of_match);
1656 
1657 static struct platform_driver fimc_lite_driver = {
1658 	.probe		= fimc_lite_probe,
1659 	.remove_new	= fimc_lite_remove,
1660 	.driver = {
1661 		.of_match_table = flite_of_match,
1662 		.name		= FIMC_LITE_DRV_NAME,
1663 		.pm		= &fimc_lite_pm_ops,
1664 	}
1665 };
1666 module_platform_driver(fimc_lite_driver);
1667 MODULE_LICENSE("GPL");
1668 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
1669