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Merge tag 'at24-4.17-rc5-fixes-for-wolfram' of git://git.kernel.org/pub/scm/linux...
[linux-2.6-block.git] / drivers / staging / media / imx / imx-media-csi.c
CommitLineData
4a34ec8e
SL		 1/*
2 * V4L2 Capture CSI Subdev for Freescale i.MX5/6 SOC
3 *
4 * Copyright (c) 2014-2017 Mentor Graphics Inc.
fb30ee79 5 * Copyright (C) 2017 Pengutronix, Philipp Zabel <kernel@pengutronix.de>
4a34ec8e
SL		 6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 */
12#include <linux/delay.h>
fb30ee79 13#include <linux/gcd.h>
4a34ec8e
SL		 14#include <linux/interrupt.h>
15#include <linux/module.h>
bf3cfaa7 16#include <linux/of_graph.h>
4a34ec8e
SL		 17#include <linux/pinctrl/consumer.h>
18#include <linux/platform_device.h>
19#include <media/v4l2-ctrls.h>
20#include <media/v4l2-device.h>
21#include <media/v4l2-event.h>
22#include <media/v4l2-fwnode.h>
23#include <media/v4l2-mc.h>
24#include <media/v4l2-subdev.h>
25#include <media/videobuf2-dma-contig.h>
26#include <video/imx-ipu-v3.h>
27#include <media/imx.h>
28#include "imx-media.h"
29
30/*
31 * Min/Max supported width and heights.
32 *
33 * We allow planar output, so we have to align width by 16 pixels
34 * to meet IDMAC alignment requirements.
35 *
36 * TODO: move this into pad format negotiation, if capture device
37 * has not requested planar formats, we should allow 8 pixel
38 * alignment.
39 */
40#define MIN_W 176
41#define MIN_H 144
42#define MAX_W 4096
43#define MAX_H 4096
44#define W_ALIGN 4 /* multiple of 16 pixels */
45#define H_ALIGN 1 /* multiple of 2 lines */
46#define S_ALIGN 1 /* multiple of 2 */
47
fb30ee79
PZ		 48/*
49 * struct csi_skip_desc - CSI frame skipping descriptor
50 * @keep - number of frames kept per max_ratio frames
51 * @max_ratio - width of skip_smfc, written to MAX_RATIO bitfield
52 * @skip_smfc - skip pattern written to the SKIP_SMFC bitfield
53 */
54struct csi_skip_desc {
55 u8 keep;
56 u8 max_ratio;
57 u8 skip_smfc;
58};
59
4a34ec8e
SL		 60struct csi_priv {
61 struct device *dev;
62 struct ipu_soc *ipu;
63 struct imx_media_dev *md;
64 struct v4l2_subdev sd;
65 struct media_pad pad[CSI_NUM_PADS];
66 /* the video device at IDMAC output pad */
67 struct imx_media_video_dev *vdev;
68 struct imx_media_fim *fim;
69 int csi_id;
70 int smfc_id;
71
72 /* lock to protect all members below */
73 struct mutex lock;
74
75 int active_output_pad;
76
77 struct ipuv3_channel *idmac_ch;
78 struct ipu_smfc *smfc;
79 struct ipu_csi *csi;
80
81 struct v4l2_mbus_framefmt format_mbus[CSI_NUM_PADS];
82 const struct imx_media_pixfmt *cc[CSI_NUM_PADS];
fb30ee79 83 struct v4l2_fract frame_interval[CSI_NUM_PADS];
4a34ec8e 84 struct v4l2_rect crop;
69e78611 85 struct v4l2_rect compose;
fb30ee79 86 const struct csi_skip_desc *skip;
4a34ec8e
SL		 87
88 /* active vb2 buffers to send to video dev sink */
89 struct imx_media_buffer *active_vb2_buf[2];
90 struct imx_media_dma_buf underrun_buf;
91
92 int ipu_buf_num; /* ipu double buffer index: 0-1 */
93
94 /* the sink for the captured frames */
95 struct media_entity *sink;
96 enum ipu_csi_dest dest;
97 /* the source subdev */
98 struct v4l2_subdev *src_sd;
99
100 /* the mipi virtual channel number at link validate */
101 int vc_num;
102
bf3cfaa7
SL		 103 /* the upstream endpoint CSI is receiving from */
104 struct v4l2_fwnode_endpoint upstream_ep;
4a34ec8e
SL		 105
106 spinlock_t irqlock; /* protect eof_irq handler */
107 struct timer_list eof_timeout_timer;
108 int eof_irq;
109 int nfb4eof_irq;
110
111 struct v4l2_ctrl_handler ctrl_hdlr;
112
113 int stream_count; /* streaming counter */
114 bool last_eof; /* waiting for last EOF at stream off */
115 bool nfb4eof; /* NFB4EOF encountered during streaming */
116 struct completion last_eof_comp;
117};
118
119static inline struct csi_priv *sd_to_dev(struct v4l2_subdev *sdev)
120{
121 return container_of(sdev, struct csi_priv, sd);
122}
123
bf3cfaa7
SL		 124static inline bool is_parallel_16bit_bus(struct v4l2_fwnode_endpoint *ep)
125{
126 return ep->bus_type != V4L2_MBUS_CSI2 &&
127 ep->bus.parallel.bus_width >= 16;
128}
129
130/*
131 * Parses the fwnode endpoint from the source pad of the entity
132 * connected to this CSI. This will either be the entity directly
133 * upstream from the CSI-2 receiver, or directly upstream from the
134 * video mux. The endpoint is needed to determine the bus type and
135 * bus config coming into the CSI.
136 */
137static int csi_get_upstream_endpoint(struct csi_priv *priv,
138 struct v4l2_fwnode_endpoint *ep)
139{
140 struct device_node *endpoint, *port;
bf3cfaa7
SL		 141 struct media_entity *src;
142 struct v4l2_subdev *sd;
143 struct media_pad *pad;
144
145 if (!priv->src_sd)
146 return -EPIPE;
147
148 src = &priv->src_sd->entity;
149
150 if (src->function == MEDIA_ENT_F_VID_MUX) {
151 /*
152 * CSI is connected directly to video mux, skip up to
153 * CSI-2 receiver if it is in the path, otherwise stay
154 * with video mux.
155 */
9f6a0c59
SL		 156 sd = imx_media_find_upstream_subdev(priv->md, src,
157 IMX_MEDIA_GRP_ID_CSI2);
158 if (!IS_ERR(sd))
159 src = &sd->entity;
bf3cfaa7
SL		 160 }
161
162 /* get source pad of entity directly upstream from src */
163 pad = imx_media_find_upstream_pad(priv->md, src, 0);
164 if (IS_ERR(pad))
165 return PTR_ERR(pad);
166
167 sd = media_entity_to_v4l2_subdev(pad->entity);
168
169 /*
170 * NOTE: this assumes an OF-graph port id is the same as a
171 * media pad index.
172 */
173 port = of_graph_get_port_by_id(sd->dev->of_node, pad->index);
174 if (!port)
175 return -ENODEV;
176
177 endpoint = of_get_next_child(port, NULL);
178 of_node_put(port);
179 if (!endpoint)
180 return -ENODEV;
181
182 v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), ep);
183 of_node_put(endpoint);
184
185 return 0;
186}
187
4a34ec8e
SL		 188static void csi_idmac_put_ipu_resources(struct csi_priv *priv)
189{
0b2e9e79 190 if (priv->idmac_ch)
4a34ec8e
SL		 191 ipu_idmac_put(priv->idmac_ch);
192 priv->idmac_ch = NULL;
193
0b2e9e79 194 if (priv->smfc)
4a34ec8e
SL		 195 ipu_smfc_put(priv->smfc);
196 priv->smfc = NULL;
197}
198
199static int csi_idmac_get_ipu_resources(struct csi_priv *priv)
200{
201 int ch_num, ret;
0b2e9e79
AB		 202 struct ipu_smfc *smfc;
203 struct ipuv3_channel *idmac_ch;
4a34ec8e
SL		 204
205 ch_num = IPUV3_CHANNEL_CSI0 + priv->smfc_id;
206
0b2e9e79
AB		 207 smfc = ipu_smfc_get(priv->ipu, ch_num);
208 if (IS_ERR(smfc)) {
4a34ec8e 209 v4l2_err(&priv->sd, "failed to get SMFC\n");
0b2e9e79 210 ret = PTR_ERR(smfc);
4a34ec8e
SL		 211 goto out;
212 }
0b2e9e79 213 priv->smfc = smfc;
4a34ec8e 214
0b2e9e79
AB		 215 idmac_ch = ipu_idmac_get(priv->ipu, ch_num);
216 if (IS_ERR(idmac_ch)) {
4a34ec8e
SL		 217 v4l2_err(&priv->sd, "could not get IDMAC channel %u\n",
218 ch_num);
0b2e9e79 219 ret = PTR_ERR(idmac_ch);
4a34ec8e
SL		 220 goto out;
221 }
0b2e9e79 222 priv->idmac_ch = idmac_ch;
4a34ec8e
SL		 223
224 return 0;
225out:
226 csi_idmac_put_ipu_resources(priv);
227 return ret;
228}
229
230static void csi_vb2_buf_done(struct csi_priv *priv)
231{
232 struct imx_media_video_dev *vdev = priv->vdev;
233 struct imx_media_buffer *done, *next;
234 struct vb2_buffer *vb;
235 dma_addr_t phys;
236
237 done = priv->active_vb2_buf[priv->ipu_buf_num];
238 if (done) {
239 vb = &done->vbuf.vb2_buf;
240 vb->timestamp = ktime_get_ns();
241 vb2_buffer_done(vb, priv->nfb4eof ?
242 VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
243 }
244
245 priv->nfb4eof = false;
246
247 /* get next queued buffer */
248 next = imx_media_capture_device_next_buf(vdev);
249 if (next) {
250 phys = vb2_dma_contig_plane_dma_addr(&next->vbuf.vb2_buf, 0);
251 priv->active_vb2_buf[priv->ipu_buf_num] = next;
252 } else {
253 phys = priv->underrun_buf.phys;
254 priv->active_vb2_buf[priv->ipu_buf_num] = NULL;
255 }
256
257 if (ipu_idmac_buffer_is_ready(priv->idmac_ch, priv->ipu_buf_num))
258 ipu_idmac_clear_buffer(priv->idmac_ch, priv->ipu_buf_num);
259
260 ipu_cpmem_set_buffer(priv->idmac_ch, priv->ipu_buf_num, phys);
261}
262
263static irqreturn_t csi_idmac_eof_interrupt(int irq, void *dev_id)
264{
265 struct csi_priv *priv = dev_id;
266
267 spin_lock(&priv->irqlock);
268
269 if (priv->last_eof) {
270 complete(&priv->last_eof_comp);
271 priv->last_eof = false;
272 goto unlock;
273 }
274
1d88f4bc 275 if (priv->fim)
4a34ec8e 276 /* call frame interval monitor */
1d88f4bc 277 imx_media_fim_eof_monitor(priv->fim, ktime_get());
4a34ec8e
SL		 278
279 csi_vb2_buf_done(priv);
280
281 /* select new IPU buf */
282 ipu_idmac_select_buffer(priv->idmac_ch, priv->ipu_buf_num);
283 /* toggle IPU double-buffer index */
284 priv->ipu_buf_num ^= 1;
285
286 /* bump the EOF timeout timer */
287 mod_timer(&priv->eof_timeout_timer,
288 jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
289
290unlock:
291 spin_unlock(&priv->irqlock);
292 return IRQ_HANDLED;
293}
294
295static irqreturn_t csi_idmac_nfb4eof_interrupt(int irq, void *dev_id)
296{
297 struct csi_priv *priv = dev_id;
298
299 spin_lock(&priv->irqlock);
300
301 /*
302 * this is not an unrecoverable error, just mark
303 * the next captured frame with vb2 error flag.
304 */
305 priv->nfb4eof = true;
306
307 v4l2_err(&priv->sd, "NFB4EOF\n");
308
309 spin_unlock(&priv->irqlock);
310
311 return IRQ_HANDLED;
312}
313
314/*
315 * EOF timeout timer function. This is an unrecoverable condition
316 * without a stream restart.
317 */
e99e88a9 318static void csi_idmac_eof_timeout(struct timer_list *t)
4a34ec8e 319{
e99e88a9 320 struct csi_priv *priv = from_timer(priv, t, eof_timeout_timer);
4a34ec8e
SL		 321 struct imx_media_video_dev *vdev = priv->vdev;
322
323 v4l2_err(&priv->sd, "EOF timeout\n");
324
325 /* signal a fatal error to capture device */
326 imx_media_capture_device_error(vdev);
327}
328
329static void csi_idmac_setup_vb2_buf(struct csi_priv *priv, dma_addr_t *phys)
330{
331 struct imx_media_video_dev *vdev = priv->vdev;
332 struct imx_media_buffer *buf;
333 int i;
334
335 for (i = 0; i < 2; i++) {
336 buf = imx_media_capture_device_next_buf(vdev);
337 if (buf) {
338 priv->active_vb2_buf[i] = buf;
339 phys[i] = vb2_dma_contig_plane_dma_addr(
340 &buf->vbuf.vb2_buf, 0);
341 } else {
342 priv->active_vb2_buf[i] = NULL;
343 phys[i] = priv->underrun_buf.phys;
344 }
345 }
346}
347
348static void csi_idmac_unsetup_vb2_buf(struct csi_priv *priv,
349 enum vb2_buffer_state return_status)
350{
351 struct imx_media_buffer *buf;
352 int i;
353
354 /* return any remaining active frames with return_status */
355 for (i = 0; i < 2; i++) {
356 buf = priv->active_vb2_buf[i];
357 if (buf) {
358 struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
359
360 vb->timestamp = ktime_get_ns();
361 vb2_buffer_done(vb, return_status);
362 }
363 }
364}
365
366/* init the SMFC IDMAC channel */
367static int csi_idmac_setup_channel(struct csi_priv *priv)
368{
369 struct imx_media_video_dev *vdev = priv->vdev;
4a34ec8e 370 struct v4l2_mbus_framefmt *infmt;
4a34ec8e 371 struct ipu_image image;
c8da8c03 372 u32 passthrough_bits;
4a34ec8e
SL		 373 dma_addr_t phys[2];
374 bool passthrough;
c8da8c03 375 u32 burst_size;
4a34ec8e
SL		 376 int ret;
377
378 infmt = &priv->format_mbus[CSI_SINK_PAD];
4a34ec8e
SL		 379
380 ipu_cpmem_zero(priv->idmac_ch);
381
382 memset(&image, 0, sizeof(image));
383 image.pix = vdev->fmt.fmt.pix;
384 image.rect.width = image.pix.width;
385 image.rect.height = image.pix.height;
386
387 csi_idmac_setup_vb2_buf(priv, phys);
388
389 image.phys0 = phys[0];
390 image.phys1 = phys[1];
391
4a34ec8e 392 /*
c8da8c03
RK		 393 * Check for conditions that require the IPU to handle the
394 * data internally as generic data, aka passthrough mode:
395 * - raw bayer formats
bf3cfaa7 396 * - the CSI is receiving from a 16-bit parallel bus
4a34ec8e 397 */
c8da8c03
RK		 398 switch (image.pix.pixelformat) {
399 case V4L2_PIX_FMT_SBGGR8:
400 case V4L2_PIX_FMT_SGBRG8:
401 case V4L2_PIX_FMT_SGRBG8:
402 case V4L2_PIX_FMT_SRGGB8:
b1e064c2 403 case V4L2_PIX_FMT_GREY:
37ea9830 404 burst_size = 16;
c8da8c03
RK		 405 passthrough = true;
406 passthrough_bits = 8;
407 break;
408 case V4L2_PIX_FMT_SBGGR16:
409 case V4L2_PIX_FMT_SGBRG16:
410 case V4L2_PIX_FMT_SGRBG16:
411 case V4L2_PIX_FMT_SRGGB16:
412 burst_size = 4;
413 passthrough = true;
414 passthrough_bits = 16;
415 break;
6f303592
PZ		 416 case V4L2_PIX_FMT_YUV420:
417 case V4L2_PIX_FMT_NV12:
418 burst_size = (image.pix.width & 0x3f) ?
419 ((image.pix.width & 0x1f) ?
420 ((image.pix.width & 0xf) ? 8 : 16) : 32) : 64;
bf3cfaa7 421 passthrough = is_parallel_16bit_bus(&priv->upstream_ep);
6f303592 422 passthrough_bits = 16;
14330d7f
PZ		 423 /* Skip writing U and V components to odd rows */
424 ipu_cpmem_skip_odd_chroma_rows(priv->idmac_ch);
6f303592
PZ		 425 break;
426 case V4L2_PIX_FMT_YUYV:
427 case V4L2_PIX_FMT_UYVY:
428 burst_size = (image.pix.width & 0x1f) ?
429 ((image.pix.width & 0xf) ? 8 : 16) : 32;
bf3cfaa7 430 passthrough = is_parallel_16bit_bus(&priv->upstream_ep);
6f303592
PZ		 431 passthrough_bits = 16;
432 break;
c8da8c03
RK		 433 default:
434 burst_size = (image.pix.width & 0xf) ? 8 : 16;
bf3cfaa7 435 passthrough = is_parallel_16bit_bus(&priv->upstream_ep);
c8da8c03
RK		 436 passthrough_bits = 16;
437 break;
438 }
4a34ec8e 439
c8da8c03
RK		 440 if (passthrough) {
441 ipu_cpmem_set_resolution(priv->idmac_ch, image.rect.width,
442 image.rect.height);
443 ipu_cpmem_set_stride(priv->idmac_ch, image.pix.bytesperline);
444 ipu_cpmem_set_buffer(priv->idmac_ch, 0, image.phys0);
445 ipu_cpmem_set_buffer(priv->idmac_ch, 1, image.phys1);
446 ipu_cpmem_set_format_passthrough(priv->idmac_ch,
447 passthrough_bits);
448 } else {
449 ret = ipu_cpmem_set_image(priv->idmac_ch, &image);
450 if (ret)
451 goto unsetup_vb2;
452 }
453
454 ipu_cpmem_set_burstsize(priv->idmac_ch, burst_size);
4a34ec8e
SL		 455
456 /*
457 * Set the channel for the direct CSI-->memory via SMFC
458 * use-case to very high priority, by enabling the watermark
459 * signal in the SMFC, enabling WM in the channel, and setting
460 * the channel priority to high.
461 *
462 * Refer to the i.mx6 rev. D TRM Table 36-8: Calculated priority
463 * value.
464 *
465 * The WM's are set very low by intention here to ensure that
466 * the SMFC FIFOs do not overflow.
467 */
468 ipu_smfc_set_watermark(priv->smfc, 0x02, 0x01);
469 ipu_cpmem_set_high_priority(priv->idmac_ch);
470 ipu_idmac_enable_watermark(priv->idmac_ch, true);
471 ipu_cpmem_set_axi_id(priv->idmac_ch, 0);
472
473 burst_size = passthrough ?
474 (burst_size >> 3) - 1 : (burst_size >> 2) - 1;
475
476 ipu_smfc_set_burstsize(priv->smfc, burst_size);
477
478 if (image.pix.field == V4L2_FIELD_NONE &&
479 V4L2_FIELD_HAS_BOTH(infmt->field))
480 ipu_cpmem_interlaced_scan(priv->idmac_ch,
481 image.pix.bytesperline);
482
483 ipu_idmac_set_double_buffer(priv->idmac_ch, true);
484
485 return 0;
486
487unsetup_vb2:
488 csi_idmac_unsetup_vb2_buf(priv, VB2_BUF_STATE_QUEUED);
489 return ret;
490}
491
492static void csi_idmac_unsetup(struct csi_priv *priv,
493 enum vb2_buffer_state state)
494{
495 ipu_idmac_disable_channel(priv->idmac_ch);
496 ipu_smfc_disable(priv->smfc);
497
498 csi_idmac_unsetup_vb2_buf(priv, state);
499}
500
501static int csi_idmac_setup(struct csi_priv *priv)
502{
503 int ret;
504
505 ret = csi_idmac_setup_channel(priv);
506 if (ret)
507 return ret;
508
509 ipu_cpmem_dump(priv->idmac_ch);
510 ipu_dump(priv->ipu);
511
512 ipu_smfc_enable(priv->smfc);
513
514 /* set buffers ready */
515 ipu_idmac_select_buffer(priv->idmac_ch, 0);
516 ipu_idmac_select_buffer(priv->idmac_ch, 1);
517
518 /* enable the channels */
519 ipu_idmac_enable_channel(priv->idmac_ch);
520
521 return 0;
522}
523
524static int csi_idmac_start(struct csi_priv *priv)
525{
526 struct imx_media_video_dev *vdev = priv->vdev;
527 struct v4l2_pix_format *outfmt;
528 int ret;
529
530 ret = csi_idmac_get_ipu_resources(priv);
531 if (ret)
532 return ret;
533
534 ipu_smfc_map_channel(priv->smfc, priv->csi_id, priv->vc_num);
535
536 outfmt = &vdev->fmt.fmt.pix;
537
538 ret = imx_media_alloc_dma_buf(priv->md, &priv->underrun_buf,
539 outfmt->sizeimage);
540 if (ret)
541 goto out_put_ipu;
542
543 priv->ipu_buf_num = 0;
544
545 /* init EOF completion waitq */
546 init_completion(&priv->last_eof_comp);
547 priv->last_eof = false;
548 priv->nfb4eof = false;
549
550 ret = csi_idmac_setup(priv);
551 if (ret) {
552 v4l2_err(&priv->sd, "csi_idmac_setup failed: %d\n", ret);
553 goto out_free_dma_buf;
554 }
555
556 priv->nfb4eof_irq = ipu_idmac_channel_irq(priv->ipu,
557 priv->idmac_ch,
558 IPU_IRQ_NFB4EOF);
559 ret = devm_request_irq(priv->dev, priv->nfb4eof_irq,
560 csi_idmac_nfb4eof_interrupt, 0,
561 "imx-smfc-nfb4eof", priv);
562 if (ret) {
563 v4l2_err(&priv->sd,
564 "Error registering NFB4EOF irq: %d\n", ret);
565 goto out_unsetup;
566 }
567
568 priv->eof_irq = ipu_idmac_channel_irq(priv->ipu, priv->idmac_ch,
569 IPU_IRQ_EOF);
570
571 ret = devm_request_irq(priv->dev, priv->eof_irq,
572 csi_idmac_eof_interrupt, 0,
573 "imx-smfc-eof", priv);
574 if (ret) {
575 v4l2_err(&priv->sd,
576 "Error registering eof irq: %d\n", ret);
577 goto out_free_nfb4eof_irq;
578 }
579
580 /* start the EOF timeout timer */
581 mod_timer(&priv->eof_timeout_timer,
582 jiffies + msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
583
584 return 0;
585
586out_free_nfb4eof_irq:
587 devm_free_irq(priv->dev, priv->nfb4eof_irq, priv);
588out_unsetup:
589 csi_idmac_unsetup(priv, VB2_BUF_STATE_QUEUED);
590out_free_dma_buf:
591 imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
592out_put_ipu:
593 csi_idmac_put_ipu_resources(priv);
594 return ret;
595}
596
597static void csi_idmac_stop(struct csi_priv *priv)
598{
599 unsigned long flags;
600 int ret;
601
602 /* mark next EOF interrupt as the last before stream off */
603 spin_lock_irqsave(&priv->irqlock, flags);
604 priv->last_eof = true;
605 spin_unlock_irqrestore(&priv->irqlock, flags);
606
607 /*
608 * and then wait for interrupt handler to mark completion.
609 */
610 ret = wait_for_completion_timeout(
611 &priv->last_eof_comp, msecs_to_jiffies(IMX_MEDIA_EOF_TIMEOUT));
612 if (ret == 0)
613 v4l2_warn(&priv->sd, "wait last EOF timeout\n");
614
615 devm_free_irq(priv->dev, priv->eof_irq, priv);
616 devm_free_irq(priv->dev, priv->nfb4eof_irq, priv);
617
618 csi_idmac_unsetup(priv, VB2_BUF_STATE_ERROR);
619
620 imx_media_free_dma_buf(priv->md, &priv->underrun_buf);
621
622 /* cancel the EOF timeout timer */
623 del_timer_sync(&priv->eof_timeout_timer);
624
625 csi_idmac_put_ipu_resources(priv);
626}
627
628/* Update the CSI whole sensor and active windows */
629static int csi_setup(struct csi_priv *priv)
630{
631 struct v4l2_mbus_framefmt *infmt, *outfmt;
bf3cfaa7 632 struct v4l2_mbus_config mbus_cfg;
4a34ec8e
SL		 633 struct v4l2_mbus_framefmt if_fmt;
634
635 infmt = &priv->format_mbus[CSI_SINK_PAD];
636 outfmt = &priv->format_mbus[priv->active_output_pad];
4a34ec8e 637
bf3cfaa7
SL		 638 /* compose mbus_config from the upstream endpoint */
639 mbus_cfg.type = priv->upstream_ep.bus_type;
640 mbus_cfg.flags = (priv->upstream_ep.bus_type == V4L2_MBUS_CSI2) ?
641 priv->upstream_ep.bus.mipi_csi2.flags :
642 priv->upstream_ep.bus.parallel.flags;
4a34ec8e
SL		 643
644 /*
bf3cfaa7 645 * we need to pass input frame to CSI interface, but
4a34ec8e
SL		 646 * with translated field type from output format
647 */
648 if_fmt = *infmt;
649 if_fmt.field = outfmt->field;
650
651 ipu_csi_set_window(priv->csi, &priv->crop);
652
653 ipu_csi_set_downsize(priv->csi,
69e78611
PZ		 654 priv->crop.width == 2 * priv->compose.width,
655 priv->crop.height == 2 * priv->compose.height);
4a34ec8e 656
bf3cfaa7 657 ipu_csi_init_interface(priv->csi, &mbus_cfg, &if_fmt);
4a34ec8e
SL		 658
659 ipu_csi_set_dest(priv->csi, priv->dest);
660
fb30ee79
PZ		 661 if (priv->dest == IPU_CSI_DEST_IDMAC)
662 ipu_csi_set_skip_smfc(priv->csi, priv->skip->skip_smfc,
663 priv->skip->max_ratio - 1, 0);
664
4a34ec8e
SL		 665 ipu_csi_dump(priv->csi);
666
667 return 0;
668}
669
670static int csi_start(struct csi_priv *priv)
671{
52e17089 672 struct v4l2_fract *output_fi;
4a34ec8e
SL		 673 int ret;
674
fb30ee79 675 output_fi = &priv->frame_interval[priv->active_output_pad];
fb30ee79 676
4a34ec8e
SL		 677 if (priv->dest == IPU_CSI_DEST_IDMAC) {
678 ret = csi_idmac_start(priv);
679 if (ret)
680 return ret;
681 }
682
683 ret = csi_setup(priv);
684 if (ret)
685 goto idmac_stop;
686
687 /* start the frame interval monitor */
688 if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC) {
fb30ee79 689 ret = imx_media_fim_set_stream(priv->fim, output_fi, true);
4a34ec8e
SL		 690 if (ret)
691 goto idmac_stop;
692 }
693
694 ret = ipu_csi_enable(priv->csi);
695 if (ret) {
696 v4l2_err(&priv->sd, "CSI enable error: %d\n", ret);
697 goto fim_off;
698 }
699
700 return 0;
701
702fim_off:
703 if (priv->fim && priv->dest == IPU_CSI_DEST_IDMAC)
fb30ee79 704 imx_media_fim_set_stream(priv->fim, NULL, false);
4a34ec8e
SL		 705idmac_stop:
706 if (priv->dest == IPU_CSI_DEST_IDMAC)
707 csi_idmac_stop(priv);
708 return ret;
709}
710
711static void csi_stop(struct csi_priv *priv)
712{
713 if (priv->dest == IPU_CSI_DEST_IDMAC) {
714 csi_idmac_stop(priv);
715
716 /* stop the frame interval monitor */
717 if (priv->fim)
fb30ee79 718 imx_media_fim_set_stream(priv->fim, NULL, false);
4a34ec8e
SL		 719 }
720
721 ipu_csi_disable(priv->csi);
722}
723
fb30ee79
PZ		 724static const struct csi_skip_desc csi_skip[12] = {
725 { 1, 1, 0x00 }, /* Keep all frames */
726 { 5, 6, 0x10 }, /* Skip every sixth frame */
727 { 4, 5, 0x08 }, /* Skip every fifth frame */
728 { 3, 4, 0x04 }, /* Skip every fourth frame */
729 { 2, 3, 0x02 }, /* Skip every third frame */
730 { 3, 5, 0x0a }, /* Skip frames 1 and 3 of every 5 */
731 { 1, 2, 0x01 }, /* Skip every second frame */
732 { 2, 5, 0x0b }, /* Keep frames 1 and 4 of every 5 */
733 { 1, 3, 0x03 }, /* Keep one in three frames */
734 { 1, 4, 0x07 }, /* Keep one in four frames */
735 { 1, 5, 0x0f }, /* Keep one in five frames */
736 { 1, 6, 0x1f }, /* Keep one in six frames */
737};
738
739static void csi_apply_skip_interval(const struct csi_skip_desc *skip,
740 struct v4l2_fract *interval)
741{
742 unsigned int div;
743
744 interval->numerator *= skip->max_ratio;
745 interval->denominator *= skip->keep;
746
747 /* Reduce fraction to lowest terms */
748 div = gcd(interval->numerator, interval->denominator);
749 if (div > 1) {
750 interval->numerator /= div;
751 interval->denominator /= div;
752 }
753}
754
755/*
756 * Find the skip pattern to produce the output frame interval closest to the
757 * requested one, for the given input frame interval. Updates the output frame
758 * interval to the exact value.
759 */
760static const struct csi_skip_desc *csi_find_best_skip(struct v4l2_fract *in,
761 struct v4l2_fract *out)
762{
763 const struct csi_skip_desc *skip = &csi_skip[0], *best_skip = skip;
764 u32 min_err = UINT_MAX;
765 u64 want_us;
766 int i;
767
768 /* Default to 1:1 ratio */
769 if (out->numerator == 0 || out->denominator == 0 ||
770 in->numerator == 0 || in->denominator == 0) {
771 *out = *in;
772 return best_skip;
773 }
774
775 want_us = div_u64((u64)USEC_PER_SEC * out->numerator, out->denominator);
776
777 /* Find the reduction closest to the requested time per frame */
778 for (i = 0; i < ARRAY_SIZE(csi_skip); i++, skip++) {
779 u64 tmp, err;
780
781 tmp = div_u64((u64)USEC_PER_SEC * in->numerator *
782 skip->max_ratio, in->denominator * skip->keep);
783
784 err = abs((s64)tmp - want_us);
785 if (err < min_err) {
786 min_err = err;
787 best_skip = skip;
788 }
789 }
790
791 *out = *in;
792 csi_apply_skip_interval(best_skip, out);
793
794 return best_skip;
795}
796
4a34ec8e
SL		 797/*
798 * V4L2 subdev operations.
799 */
800
801static int csi_g_frame_interval(struct v4l2_subdev *sd,
802 struct v4l2_subdev_frame_interval *fi)
803{
804 struct csi_priv *priv = v4l2_get_subdevdata(sd);
805
fb30ee79
PZ		 806 if (fi->pad >= CSI_NUM_PADS)
807 return -EINVAL;
808
4a34ec8e 809 mutex_lock(&priv->lock);
fb30ee79
PZ		 810
811 fi->interval = priv->frame_interval[fi->pad];
812
4a34ec8e
SL		 813 mutex_unlock(&priv->lock);
814
815 return 0;
816}
817
818static int csi_s_frame_interval(struct v4l2_subdev *sd,
819 struct v4l2_subdev_frame_interval *fi)
820{
821 struct csi_priv *priv = v4l2_get_subdevdata(sd);
fb30ee79
PZ		 822 struct v4l2_fract *input_fi;
823 int ret = 0;
4a34ec8e
SL		 824
825 mutex_lock(&priv->lock);
826
fb30ee79 827 input_fi = &priv->frame_interval[CSI_SINK_PAD];
4a34ec8e 828
fb30ee79
PZ		 829 switch (fi->pad) {
830 case CSI_SINK_PAD:
831 /* No limits on input frame interval */
832 /* Reset output intervals and frame skipping ratio to 1:1 */
833 priv->frame_interval[CSI_SRC_PAD_IDMAC] = fi->interval;
834 priv->frame_interval[CSI_SRC_PAD_DIRECT] = fi->interval;
835 priv->skip = &csi_skip[0];
836 break;
837 case CSI_SRC_PAD_IDMAC:
838 /*
839 * frame interval at IDMAC output pad depends on input
840 * interval, modified by frame skipping.
841 */
842 priv->skip = csi_find_best_skip(input_fi, &fi->interval);
843 break;
844 case CSI_SRC_PAD_DIRECT:
845 /*
846 * frame interval at DIRECT output pad is same as input
847 * interval.
848 */
849 fi->interval = *input_fi;
850 break;
851 default:
852 ret = -EINVAL;
853 goto out;
854 }
4a34ec8e 855
fb30ee79
PZ		 856 priv->frame_interval[fi->pad] = fi->interval;
857out:
4a34ec8e 858 mutex_unlock(&priv->lock);
fb30ee79 859 return ret;
4a34ec8e
SL		 860}
861
862static int csi_s_stream(struct v4l2_subdev *sd, int enable)
863{
864 struct csi_priv *priv = v4l2_get_subdevdata(sd);
865 int ret = 0;
866
867 mutex_lock(&priv->lock);
868
869 if (!priv->src_sd || !priv->sink) {
870 ret = -EPIPE;
871 goto out;
872 }
873
874 /*
875 * enable/disable streaming only if stream_count is
876 * going from 0 to 1 / 1 to 0.
877 */
878 if (priv->stream_count != !enable)
879 goto update_count;
880
881 if (enable) {
882 /* upstream must be started first, before starting CSI */
883 ret = v4l2_subdev_call(priv->src_sd, video, s_stream, 1);
884 ret = (ret && ret != -ENOIOCTLCMD) ? ret : 0;
885 if (ret)
886 goto out;
887
888 dev_dbg(priv->dev, "stream ON\n");
889 ret = csi_start(priv);
890 if (ret) {
891 v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
892 goto out;
893 }
894 } else {
895 dev_dbg(priv->dev, "stream OFF\n");
896 /* CSI must be stopped first, then stop upstream */
897 csi_stop(priv);
898 v4l2_subdev_call(priv->src_sd, video, s_stream, 0);
899 }
900
901update_count:
902 priv->stream_count += enable ? 1 : -1;
de2e0456
MV		 903 if (priv->stream_count < 0)
904 priv->stream_count = 0;
4a34ec8e
SL		 905out:
906 mutex_unlock(&priv->lock);
907 return ret;
908}
909
910static int csi_link_setup(struct media_entity *entity,
911 const struct media_pad *local,
912 const struct media_pad *remote, u32 flags)
913{
914 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
915 struct csi_priv *priv = v4l2_get_subdevdata(sd);
916 struct v4l2_subdev *remote_sd;
917 int ret = 0;
918
919 dev_dbg(priv->dev, "link setup %s -> %s\n", remote->entity->name,
920 local->entity->name);
921
922 mutex_lock(&priv->lock);
923
924 if (local->flags & MEDIA_PAD_FL_SINK) {
925 if (!is_media_entity_v4l2_subdev(remote->entity)) {
926 ret = -EINVAL;
927 goto out;
928 }
929
930 remote_sd = media_entity_to_v4l2_subdev(remote->entity);
931
932 if (flags & MEDIA_LNK_FL_ENABLED) {
933 if (priv->src_sd) {
934 ret = -EBUSY;
935 goto out;
936 }
937 priv->src_sd = remote_sd;
938 } else {
939 priv->src_sd = NULL;
940 }
941
942 goto out;
943 }
944
945 /* this is a source pad */
946
947 if (flags & MEDIA_LNK_FL_ENABLED) {
948 if (priv->sink) {
949 ret = -EBUSY;
950 goto out;
951 }
952 } else {
953 v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
954 v4l2_ctrl_handler_init(&priv->ctrl_hdlr, 0);
955 priv->sink = NULL;
956 goto out;
957 }
958
959 /* record which output pad is now active */
960 priv->active_output_pad = local->index;
961
962 /* set CSI destination */
963 if (local->index == CSI_SRC_PAD_IDMAC) {
964 if (!is_media_entity_v4l2_video_device(remote->entity)) {
965 ret = -EINVAL;
966 goto out;
967 }
968
969 if (priv->fim) {
970 ret = imx_media_fim_add_controls(priv->fim);
971 if (ret)
972 goto out;
973 }
974
975 priv->dest = IPU_CSI_DEST_IDMAC;
976 } else {
977 if (!is_media_entity_v4l2_subdev(remote->entity)) {
978 ret = -EINVAL;
979 goto out;
980 }
981
982 remote_sd = media_entity_to_v4l2_subdev(remote->entity);
983 switch (remote_sd->grp_id) {
984 case IMX_MEDIA_GRP_ID_VDIC:
985 priv->dest = IPU_CSI_DEST_VDIC;
986 break;
987 case IMX_MEDIA_GRP_ID_IC_PRP:
988 priv->dest = IPU_CSI_DEST_IC;
989 break;
990 default:
991 ret = -EINVAL;
992 goto out;
993 }
994 }
995
996 priv->sink = remote->entity;
997out:
998 mutex_unlock(&priv->lock);
999 return ret;
1000}
1001
1002static int csi_link_validate(struct v4l2_subdev *sd,
1003 struct media_link *link,
1004 struct v4l2_subdev_format *source_fmt,
1005 struct v4l2_subdev_format *sink_fmt)
1006{
1007 struct csi_priv *priv = v4l2_get_subdevdata(sd);
890f2769 1008 struct v4l2_fwnode_endpoint upstream_ep = {};
c8da8c03 1009 const struct imx_media_pixfmt *incc;
4a34ec8e
SL		 1010 bool is_csi2;
1011 int ret;
1012
1013 ret = v4l2_subdev_link_validate_default(sd, link,
1014 source_fmt, sink_fmt);
1015 if (ret)
1016 return ret;
1017
bf3cfaa7
SL		 1018 ret = csi_get_upstream_endpoint(priv, &upstream_ep);
1019 if (ret) {
1020 v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
1021 return ret;
4a34ec8e
SL		 1022 }
1023
1024 mutex_lock(&priv->lock);
1025
bf3cfaa7
SL		 1026 priv->upstream_ep = upstream_ep;
1027 is_csi2 = (upstream_ep.bus_type == V4L2_MBUS_CSI2);
c8da8c03
RK		 1028 incc = priv->cc[CSI_SINK_PAD];
1029
1030 if (priv->dest != IPU_CSI_DEST_IDMAC &&
bf3cfaa7 1031 (incc->bayer || is_parallel_16bit_bus(&upstream_ep))) {
c8da8c03
RK		 1032 v4l2_err(&priv->sd,
1033 "bayer/16-bit parallel buses must go to IDMAC pad\n");
1034 ret = -EINVAL;
1035 goto out;
1036 }
4a34ec8e
SL		 1037
1038 if (is_csi2) {
1039 int vc_num = 0;
1040 /*
1041 * NOTE! It seems the virtual channels from the mipi csi-2
1042 * receiver are used only for routing by the video mux's,
1043 * or for hard-wired routing to the CSI's. Once the stream
1044 * enters the CSI's however, they are treated internally
1045 * in the IPU as virtual channel 0.
1046 */
1047#if 0
1048 mutex_unlock(&priv->lock);
1049 vc_num = imx_media_find_mipi_csi2_channel(priv->md,
1050 &priv->sd.entity);
1051 if (vc_num < 0)
1052 return vc_num;
1053 mutex_lock(&priv->lock);
1054#endif
1055 ipu_csi_set_mipi_datatype(priv->csi, vc_num,
1056 &priv->format_mbus[CSI_SINK_PAD]);
1057 }
1058
1059 /* select either parallel or MIPI-CSI2 as input to CSI */
1060 ipu_set_csi_src_mux(priv->ipu, priv->csi_id, is_csi2);
c8da8c03 1061out:
4a34ec8e
SL		 1062 mutex_unlock(&priv->lock);
1063 return ret;
1064}
1065
1066static struct v4l2_mbus_framefmt *
1067__csi_get_fmt(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
1068 unsigned int pad, enum v4l2_subdev_format_whence which)
1069{
1070 if (which == V4L2_SUBDEV_FORMAT_TRY)
1071 return v4l2_subdev_get_try_format(&priv->sd, cfg, pad);
1072 else
1073 return &priv->format_mbus[pad];
1074}
1075
1076static struct v4l2_rect *
1077__csi_get_crop(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
1078 enum v4l2_subdev_format_whence which)
1079{
1080 if (which == V4L2_SUBDEV_FORMAT_TRY)
1081 return v4l2_subdev_get_try_crop(&priv->sd, cfg, CSI_SINK_PAD);
1082 else
1083 return &priv->crop;
1084}
1085
69e78611
PZ		 1086static struct v4l2_rect *
1087__csi_get_compose(struct csi_priv *priv, struct v4l2_subdev_pad_config *cfg,
1088 enum v4l2_subdev_format_whence which)
1089{
1090 if (which == V4L2_SUBDEV_FORMAT_TRY)
1091 return v4l2_subdev_get_try_compose(&priv->sd, cfg,
1092 CSI_SINK_PAD);
1093 else
1094 return &priv->compose;
1095}
1096
4a34ec8e
SL		 1097static void csi_try_crop(struct csi_priv *priv,
1098 struct v4l2_rect *crop,
1099 struct v4l2_subdev_pad_config *cfg,
1100 struct v4l2_mbus_framefmt *infmt,
bf3cfaa7 1101 struct v4l2_fwnode_endpoint *upstream_ep)
4a34ec8e 1102{
4a34ec8e
SL		 1103 crop->width = min_t(__u32, infmt->width, crop->width);
1104 if (crop->left + crop->width > infmt->width)
1105 crop->left = infmt->width - crop->width;
1106 /* adjust crop left/width to h/w alignment restrictions */
1107 crop->left &= ~0x3;
1108 crop->width &= ~0x7;
1109
1110 /*
1111 * FIXME: not sure why yet, but on interlaced bt.656,
1112 * changing the vertical cropping causes loss of vertical
1113 * sync, so fix it to NTSC/PAL active lines. NTSC contains
1114 * 2 extra lines of active video that need to be cropped.
1115 */
bf3cfaa7 1116 if (upstream_ep->bus_type == V4L2_MBUS_BT656 &&
4a34ec8e
SL		 1117 (V4L2_FIELD_HAS_BOTH(infmt->field) ||
1118 infmt->field == V4L2_FIELD_ALTERNATE)) {
1119 crop->height = infmt->height;
1120 crop->top = (infmt->height == 480) ? 2 : 0;
1121 } else {
1122 crop->height = min_t(__u32, infmt->height, crop->height);
1123 if (crop->top + crop->height > infmt->height)
1124 crop->top = infmt->height - crop->height;
1125 }
1126}
1127
1128static int csi_enum_mbus_code(struct v4l2_subdev *sd,
1129 struct v4l2_subdev_pad_config *cfg,
1130 struct v4l2_subdev_mbus_code_enum *code)
1131{
1132 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1133 const struct imx_media_pixfmt *incc;
1134 struct v4l2_mbus_framefmt *infmt;
1135 int ret = 0;
1136
1137 mutex_lock(&priv->lock);
1138
1139 infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, code->which);
1140 incc = imx_media_find_mbus_format(infmt->code, CS_SEL_ANY, true);
1141
1142 switch (code->pad) {
1143 case CSI_SINK_PAD:
1144 ret = imx_media_enum_mbus_format(&code->code, code->index,
1145 CS_SEL_ANY, true);
1146 break;
1147 case CSI_SRC_PAD_DIRECT:
1148 case CSI_SRC_PAD_IDMAC:
1149 if (incc->bayer) {
1150 if (code->index != 0) {
1151 ret = -EINVAL;
1152 goto out;
1153 }
1154 code->code = infmt->code;
1155 } else {
1156 u32 cs_sel = (incc->cs == IPUV3_COLORSPACE_YUV) ?
1157 CS_SEL_YUV : CS_SEL_RGB;
1158 ret = imx_media_enum_ipu_format(&code->code,
1159 code->index,
1160 cs_sel);
1161 }
1162 break;
1163 default:
1164 ret = -EINVAL;
1165 }
1166
1167out:
1168 mutex_unlock(&priv->lock);
1169 return ret;
1170}
1171
949ffdbf
RK		 1172static int csi_enum_frame_size(struct v4l2_subdev *sd,
1173 struct v4l2_subdev_pad_config *cfg,
1174 struct v4l2_subdev_frame_size_enum *fse)
1175{
1176 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1177 struct v4l2_rect *crop;
1178 int ret = 0;
1179
1180 if (fse->pad >= CSI_NUM_PADS ||
1181 fse->index > (fse->pad == CSI_SINK_PAD ? 0 : 3))
1182 return -EINVAL;
1183
1184 mutex_lock(&priv->lock);
1185
1186 if (fse->pad == CSI_SINK_PAD) {
1187 fse->min_width = MIN_W;
1188 fse->max_width = MAX_W;
1189 fse->min_height = MIN_H;
1190 fse->max_height = MAX_H;
1191 } else {
1192 crop = __csi_get_crop(priv, cfg, fse->which);
1193
1194 fse->min_width = fse->max_width = fse->index & 1 ?
1195 crop->width / 2 : crop->width;
1196 fse->min_height = fse->max_height = fse->index & 2 ?
1197 crop->height / 2 : crop->height;
1198 }
1199
1200 mutex_unlock(&priv->lock);
1201 return ret;
1202}
1203
1204static int csi_enum_frame_interval(struct v4l2_subdev *sd,
1205 struct v4l2_subdev_pad_config *cfg,
1206 struct v4l2_subdev_frame_interval_enum *fie)
1207{
1208 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1209 struct v4l2_fract *input_fi;
1210 struct v4l2_rect *crop;
1211 int ret = 0;
1212
1213 if (fie->pad >= CSI_NUM_PADS ||
1214 fie->index >= (fie->pad != CSI_SRC_PAD_IDMAC ?
1215 1 : ARRAY_SIZE(csi_skip)))
1216 return -EINVAL;
1217
1218 mutex_lock(&priv->lock);
1219
1220 input_fi = &priv->frame_interval[CSI_SINK_PAD];
1221 crop = __csi_get_crop(priv, cfg, fie->which);
1222
1223 if ((fie->width != crop->width && fie->width != crop->width / 2) ||
1224 (fie->height != crop->height && fie->height != crop->height / 2)) {
1225 ret = -EINVAL;
1226 goto out;
1227 }
1228
1229 fie->interval = *input_fi;
1230
1231 if (fie->pad == CSI_SRC_PAD_IDMAC)
1232 csi_apply_skip_interval(&csi_skip[fie->index],
1233 &fie->interval);
1234
1235out:
1236 mutex_unlock(&priv->lock);
1237 return ret;
1238}
1239
4a34ec8e
SL		 1240static int csi_get_fmt(struct v4l2_subdev *sd,
1241 struct v4l2_subdev_pad_config *cfg,
1242 struct v4l2_subdev_format *sdformat)
1243{
1244 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1245 struct v4l2_mbus_framefmt *fmt;
1246 int ret = 0;
1247
1248 if (sdformat->pad >= CSI_NUM_PADS)
1249 return -EINVAL;
1250
1251 mutex_lock(&priv->lock);
1252
1253 fmt = __csi_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
1254 if (!fmt) {
1255 ret = -EINVAL;
1256 goto out;
1257 }
1258
1259 sdformat->format = *fmt;
1260out:
1261 mutex_unlock(&priv->lock);
1262 return ret;
1263}
1264
1265static void csi_try_fmt(struct csi_priv *priv,
bf3cfaa7 1266 struct v4l2_fwnode_endpoint *upstream_ep,
4a34ec8e
SL		 1267 struct v4l2_subdev_pad_config *cfg,
1268 struct v4l2_subdev_format *sdformat,
1269 struct v4l2_rect *crop,
69e78611 1270 struct v4l2_rect *compose,
4a34ec8e
SL		 1271 const struct imx_media_pixfmt **cc)
1272{
1273 const struct imx_media_pixfmt *incc;
1274 struct v4l2_mbus_framefmt *infmt;
1275 u32 code;
1276
21e54111
SL		 1277 infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sdformat->which);
1278
4a34ec8e
SL		 1279 switch (sdformat->pad) {
1280 case CSI_SRC_PAD_DIRECT:
1281 case CSI_SRC_PAD_IDMAC:
4a34ec8e
SL		 1282 incc = imx_media_find_mbus_format(infmt->code,
1283 CS_SEL_ANY, true);
1284
69e78611
PZ		 1285 sdformat->format.width = compose->width;
1286 sdformat->format.height = compose->height;
4a34ec8e
SL		 1287
1288 if (incc->bayer) {
1289 sdformat->format.code = infmt->code;
1290 *cc = incc;
1291 } else {
1292 u32 cs_sel = (incc->cs == IPUV3_COLORSPACE_YUV) ?
1293 CS_SEL_YUV : CS_SEL_RGB;
1294
1295 *cc = imx_media_find_ipu_format(sdformat->format.code,
1296 cs_sel);
1297 if (!*cc) {
1298 imx_media_enum_ipu_format(&code, 0, cs_sel);
1299 *cc = imx_media_find_ipu_format(code, cs_sel);
1300 sdformat->format.code = (*cc)->codes[0];
1301 }
1302 }
1303
1304 if (sdformat->pad == CSI_SRC_PAD_DIRECT ||
1305 sdformat->format.field != V4L2_FIELD_NONE)
1306 sdformat->format.field = infmt->field;
1307
1308 /*
1309 * translate V4L2_FIELD_ALTERNATE to SEQ_TB or SEQ_BT
1310 * depending on input height (assume NTSC top-bottom
1311 * order if 480 lines, otherwise PAL bottom-top order).
1312 */
1313 if (sdformat->format.field == V4L2_FIELD_ALTERNATE) {
1314 sdformat->format.field = (infmt->height == 480) ?
1315 V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT;
1316 }
21e54111
SL		 1317
1318 /* propagate colorimetry from sink */
1319 sdformat->format.colorspace = infmt->colorspace;
1320 sdformat->format.xfer_func = infmt->xfer_func;
1321 sdformat->format.quantization = infmt->quantization;
1322 sdformat->format.ycbcr_enc = infmt->ycbcr_enc;
4a34ec8e
SL		 1323 break;
1324 case CSI_SINK_PAD:
1325 v4l_bound_align_image(&sdformat->format.width, MIN_W, MAX_W,
1326 W_ALIGN, &sdformat->format.height,
1327 MIN_H, MAX_H, H_ALIGN, S_ALIGN);
69e78611
PZ		 1328
1329 /* Reset crop and compose rectangles */
4a34ec8e
SL		 1330 crop->left = 0;
1331 crop->top = 0;
1332 crop->width = sdformat->format.width;
1333 crop->height = sdformat->format.height;
bf3cfaa7 1334 csi_try_crop(priv, crop, cfg, &sdformat->format, upstream_ep);
69e78611
PZ		 1335 compose->left = 0;
1336 compose->top = 0;
1337 compose->width = crop->width;
1338 compose->height = crop->height;
4a34ec8e
SL		 1339
1340 *cc = imx_media_find_mbus_format(sdformat->format.code,
1341 CS_SEL_ANY, true);
1342 if (!*cc) {
1343 imx_media_enum_mbus_format(&code, 0,
1344 CS_SEL_ANY, false);
1345 *cc = imx_media_find_mbus_format(code,
1346 CS_SEL_ANY, false);
1347 sdformat->format.code = (*cc)->codes[0];
1348 }
21e54111
SL		 1349
1350 imx_media_fill_default_mbus_fields(
1351 &sdformat->format, infmt,
1352 priv->active_output_pad == CSI_SRC_PAD_DIRECT);
4a34ec8e
SL		 1353 break;
1354 }
1355}
1356
1357static int csi_set_fmt(struct v4l2_subdev *sd,
1358 struct v4l2_subdev_pad_config *cfg,
1359 struct v4l2_subdev_format *sdformat)
1360{
1361 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1362 struct imx_media_video_dev *vdev = priv->vdev;
bf3cfaa7 1363 struct v4l2_fwnode_endpoint upstream_ep;
4a34ec8e 1364 const struct imx_media_pixfmt *cc;
4a34ec8e
SL		 1365 struct v4l2_pix_format vdev_fmt;
1366 struct v4l2_mbus_framefmt *fmt;
69e78611 1367 struct v4l2_rect *crop, *compose;
bf3cfaa7 1368 int ret;
4a34ec8e
SL		 1369
1370 if (sdformat->pad >= CSI_NUM_PADS)
1371 return -EINVAL;
1372
bf3cfaa7
SL		 1373 ret = csi_get_upstream_endpoint(priv, &upstream_ep);
1374 if (ret) {
1375 v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
1376 return ret;
4a34ec8e
SL		 1377 }
1378
1379 mutex_lock(&priv->lock);
1380
1381 if (priv->stream_count > 0) {
1382 ret = -EBUSY;
1383 goto out;
1384 }
1385
1386 crop = __csi_get_crop(priv, cfg, sdformat->which);
69e78611 1387 compose = __csi_get_compose(priv, cfg, sdformat->which);
4a34ec8e 1388
bf3cfaa7 1389 csi_try_fmt(priv, &upstream_ep, cfg, sdformat, crop, compose, &cc);
4a34ec8e
SL		 1390
1391 fmt = __csi_get_fmt(priv, cfg, sdformat->pad, sdformat->which);
1392 *fmt = sdformat->format;
1393
1394 if (sdformat->pad == CSI_SINK_PAD) {
1395 int pad;
1396
1397 /* propagate format to source pads */
1398 for (pad = CSI_SINK_PAD + 1; pad < CSI_NUM_PADS; pad++) {
1399 const struct imx_media_pixfmt *outcc;
1400 struct v4l2_mbus_framefmt *outfmt;
1401 struct v4l2_subdev_format format;
1402
1403 format.pad = pad;
1404 format.which = sdformat->which;
1405 format.format = sdformat->format;
bf3cfaa7
SL		 1406 csi_try_fmt(priv, &upstream_ep, cfg, &format,
1407 NULL, compose, &outcc);
4a34ec8e
SL		 1408
1409 outfmt = __csi_get_fmt(priv, cfg, pad, sdformat->which);
1410 *outfmt = format.format;
1411
1412 if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1413 priv->cc[pad] = outcc;
1414 }
1415 }
1416
1417 if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY)
1418 goto out;
1419
1420 priv->cc[sdformat->pad] = cc;
1421
1422 /* propagate IDMAC output pad format to capture device */
1423 imx_media_mbus_fmt_to_pix_fmt(&vdev_fmt,
1424 &priv->format_mbus[CSI_SRC_PAD_IDMAC],
1425 priv->cc[CSI_SRC_PAD_IDMAC]);
1426 mutex_unlock(&priv->lock);
1427 imx_media_capture_device_set_format(vdev, &vdev_fmt);
1428
1429 return 0;
1430out:
1431 mutex_unlock(&priv->lock);
1432 return ret;
1433}
1434
1435static int csi_get_selection(struct v4l2_subdev *sd,
1436 struct v4l2_subdev_pad_config *cfg,
1437 struct v4l2_subdev_selection *sel)
1438{
1439 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1440 struct v4l2_mbus_framefmt *infmt;
69e78611 1441 struct v4l2_rect *crop, *compose;
4a34ec8e
SL		 1442 int ret = 0;
1443
69e78611 1444 if (sel->pad != CSI_SINK_PAD)
4a34ec8e
SL		 1445 return -EINVAL;
1446
1447 mutex_lock(&priv->lock);
1448
1449 infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sel->which);
1450 crop = __csi_get_crop(priv, cfg, sel->which);
69e78611 1451 compose = __csi_get_compose(priv, cfg, sel->which);
4a34ec8e
SL		 1452
1453 switch (sel->target) {
1454 case V4L2_SEL_TGT_CROP_BOUNDS:
1455 sel->r.left = 0;
1456 sel->r.top = 0;
1457 sel->r.width = infmt->width;
1458 sel->r.height = infmt->height;
1459 break;
1460 case V4L2_SEL_TGT_CROP:
1461 sel->r = *crop;
1462 break;
69e78611
PZ		 1463 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1464 sel->r.left = 0;
1465 sel->r.top = 0;
1466 sel->r.width = crop->width;
1467 sel->r.height = crop->height;
1468 break;
1469 case V4L2_SEL_TGT_COMPOSE:
1470 sel->r = *compose;
1471 break;
4a34ec8e
SL		 1472 default:
1473 ret = -EINVAL;
1474 }
1475
1476 mutex_unlock(&priv->lock);
1477 return ret;
1478}
1479
69e78611
PZ		 1480static int csi_set_scale(u32 *compose, u32 crop, u32 flags)
1481{
1482 if ((flags & (V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE)) ==
1483 (V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE) &&
1484 *compose != crop && *compose != crop / 2)
1485 return -ERANGE;
1486
1487 if (*compose <= crop / 2 ||
1488 (*compose < crop * 3 / 4 && !(flags & V4L2_SEL_FLAG_GE)) ||
1489 (*compose < crop && (flags & V4L2_SEL_FLAG_LE)))
1490 *compose = crop / 2;
1491 else
1492 *compose = crop;
1493
1494 return 0;
1495}
1496
4a34ec8e
SL		 1497static int csi_set_selection(struct v4l2_subdev *sd,
1498 struct v4l2_subdev_pad_config *cfg,
1499 struct v4l2_subdev_selection *sel)
1500{
1501 struct csi_priv *priv = v4l2_get_subdevdata(sd);
bf3cfaa7 1502 struct v4l2_fwnode_endpoint upstream_ep;
4a34ec8e 1503 struct v4l2_mbus_framefmt *infmt;
69e78611 1504 struct v4l2_rect *crop, *compose;
bf3cfaa7 1505 int pad, ret;
4a34ec8e 1506
69e78611 1507 if (sel->pad != CSI_SINK_PAD)
4a34ec8e
SL		 1508 return -EINVAL;
1509
bf3cfaa7
SL		 1510 ret = csi_get_upstream_endpoint(priv, &upstream_ep);
1511 if (ret) {
1512 v4l2_err(&priv->sd, "failed to find upstream endpoint\n");
1513 return ret;
4a34ec8e
SL		 1514 }
1515
1516 mutex_lock(&priv->lock);
1517
1518 if (priv->stream_count > 0) {
1519 ret = -EBUSY;
1520 goto out;
1521 }
1522
1523 infmt = __csi_get_fmt(priv, cfg, CSI_SINK_PAD, sel->which);
1524 crop = __csi_get_crop(priv, cfg, sel->which);
69e78611 1525 compose = __csi_get_compose(priv, cfg, sel->which);
4a34ec8e 1526
69e78611
PZ		 1527 switch (sel->target) {
1528 case V4L2_SEL_TGT_CROP:
1529 /*
1530 * Modifying the crop rectangle always changes the format on
1531 * the source pads. If the KEEP_CONFIG flag is set, just return
1532 * the current crop rectangle.
1533 */
1534 if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
1535 sel->r = priv->crop;
1536 if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
1537 *crop = sel->r;
1538 goto out;
1539 }
1540
bf3cfaa7 1541 csi_try_crop(priv, &sel->r, cfg, infmt, &upstream_ep);
69e78611
PZ		 1542
1543 *crop = sel->r;
1544
1545 /* Reset scaling to 1:1 */
1546 compose->width = crop->width;
1547 compose->height = crop->height;
1548 break;
1549 case V4L2_SEL_TGT_COMPOSE:
1550 /*
1551 * Modifying the compose rectangle always changes the format on
1552 * the source pads. If the KEEP_CONFIG flag is set, just return
1553 * the current compose rectangle.
1554 */
1555 if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
1556 sel->r = priv->compose;
1557 if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
1558 *compose = sel->r;
1559 goto out;
1560 }
4a34ec8e 1561
69e78611
PZ		 1562 sel->r.left = 0;
1563 sel->r.top = 0;
1564 ret = csi_set_scale(&sel->r.width, crop->width, sel->flags);
1565 if (ret)
1566 goto out;
1567 ret = csi_set_scale(&sel->r.height, crop->height, sel->flags);
1568 if (ret)
1569 goto out;
4a34ec8e 1570
69e78611
PZ		 1571 *compose = sel->r;
1572 break;
1573 default:
1574 ret = -EINVAL;
1575 goto out;
1576 }
4a34ec8e 1577
69e78611 1578 /* Reset source pads to sink compose rectangle */
4a34ec8e
SL		 1579 for (pad = CSI_SINK_PAD + 1; pad < CSI_NUM_PADS; pad++) {
1580 struct v4l2_mbus_framefmt *outfmt;
1581
1582 outfmt = __csi_get_fmt(priv, cfg, pad, sel->which);
69e78611
PZ		 1583 outfmt->width = compose->width;
1584 outfmt->height = compose->height;
4a34ec8e
SL		 1585 }
1586
1587out:
1588 mutex_unlock(&priv->lock);
1589 return ret;
1590}
1591
1592static int csi_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1593 struct v4l2_event_subscription *sub)
1594{
1595 if (sub->type != V4L2_EVENT_IMX_FRAME_INTERVAL_ERROR)
1596 return -EINVAL;
1597 if (sub->id != 0)
1598 return -EINVAL;
1599
1600 return v4l2_event_subscribe(fh, sub, 0, NULL);
1601}
1602
1603static int csi_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1604 struct v4l2_event_subscription *sub)
1605{
1606 return v4l2_event_unsubscribe(fh, sub);
1607}
1608
1609/*
1610 * retrieve our pads parsed from the OF graph by the media device
1611 */
1612static int csi_registered(struct v4l2_subdev *sd)
1613{
1614 struct csi_priv *priv = v4l2_get_subdevdata(sd);
0b2e9e79 1615 struct ipu_csi *csi;
4a34ec8e
SL		 1616 int i, ret;
1617 u32 code;
1618
1619 /* get media device */
1620 priv->md = dev_get_drvdata(sd->v4l2_dev->dev);
1621
1622 /* get handle to IPU CSI */
0b2e9e79
AB		 1623 csi = ipu_csi_get(priv->ipu, priv->csi_id);
1624 if (IS_ERR(csi)) {
4a34ec8e 1625 v4l2_err(&priv->sd, "failed to get CSI%d\n", priv->csi_id);
0b2e9e79 1626 return PTR_ERR(csi);
4a34ec8e 1627 }
0b2e9e79 1628 priv->csi = csi;
4a34ec8e
SL		 1629
1630 for (i = 0; i < CSI_NUM_PADS; i++) {
1631 priv->pad[i].flags = (i == CSI_SINK_PAD) ?
1632 MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1633
1634 code = 0;
1635 if (i != CSI_SINK_PAD)
1636 imx_media_enum_ipu_format(&code, 0, CS_SEL_YUV);
1637
1638 /* set a default mbus format */
1639 ret = imx_media_init_mbus_fmt(&priv->format_mbus[i],
1640 640, 480, code, V4L2_FIELD_NONE,
1641 &priv->cc[i]);
1642 if (ret)
1643 goto put_csi;
fb30ee79
PZ		 1644
1645 /* init default frame interval */
1646 priv->frame_interval[i].numerator = 1;
1647 priv->frame_interval[i].denominator = 30;
4a34ec8e
SL		 1648 }
1649
fb30ee79
PZ		 1650 /* disable frame skipping */
1651 priv->skip = &csi_skip[0];
4a34ec8e 1652
69e78611
PZ		 1653 /* init default crop and compose rectangle sizes */
1654 priv->crop.width = 640;
1655 priv->crop.height = 480;
1656 priv->compose.width = 640;
1657 priv->compose.height = 480;
1658
4a34ec8e
SL		 1659 priv->fim = imx_media_fim_init(&priv->sd);
1660 if (IS_ERR(priv->fim)) {
1661 ret = PTR_ERR(priv->fim);
1662 goto put_csi;
1663 }
1664
1665 ret = media_entity_pads_init(&sd->entity, CSI_NUM_PADS, priv->pad);
1666 if (ret)
1667 goto free_fim;
1668
1669 ret = imx_media_capture_device_register(priv->vdev);
1670 if (ret)
1671 goto free_fim;
1672
1673 ret = imx_media_add_video_device(priv->md, priv->vdev);
1674 if (ret)
1675 goto unreg;
1676
1677 return 0;
1678unreg:
1679 imx_media_capture_device_unregister(priv->vdev);
1680free_fim:
1681 if (priv->fim)
1682 imx_media_fim_free(priv->fim);
1683put_csi:
1684 ipu_csi_put(priv->csi);
1685 return ret;
1686}
1687
1688static void csi_unregistered(struct v4l2_subdev *sd)
1689{
1690 struct csi_priv *priv = v4l2_get_subdevdata(sd);
1691
1692 imx_media_capture_device_unregister(priv->vdev);
1693
1694 if (priv->fim)
1695 imx_media_fim_free(priv->fim);
1696
0b2e9e79 1697 if (priv->csi)
4a34ec8e
SL		 1698 ipu_csi_put(priv->csi);
1699}
1700
1701static const struct media_entity_operations csi_entity_ops = {
1702 .link_setup = csi_link_setup,
1703 .link_validate = v4l2_subdev_link_validate,
1704};
1705
1706static const struct v4l2_subdev_core_ops csi_core_ops = {
1707 .subscribe_event = csi_subscribe_event,
1708 .unsubscribe_event = csi_unsubscribe_event,
1709};
1710
1711static const struct v4l2_subdev_video_ops csi_video_ops = {
1712 .g_frame_interval = csi_g_frame_interval,
1713 .s_frame_interval = csi_s_frame_interval,
1714 .s_stream = csi_s_stream,
1715};
1716
1717static const struct v4l2_subdev_pad_ops csi_pad_ops = {
46c121e0 1718 .init_cfg = imx_media_init_cfg,
4a34ec8e 1719 .enum_mbus_code = csi_enum_mbus_code,
949ffdbf
RK		 1720 .enum_frame_size = csi_enum_frame_size,
1721 .enum_frame_interval = csi_enum_frame_interval,
4a34ec8e
SL		 1722 .get_fmt = csi_get_fmt,
1723 .set_fmt = csi_set_fmt,
1724 .get_selection = csi_get_selection,
1725 .set_selection = csi_set_selection,
1726 .link_validate = csi_link_validate,
1727};
1728
1729static const struct v4l2_subdev_ops csi_subdev_ops = {
1730 .core = &csi_core_ops,
1731 .video = &csi_video_ops,
1732 .pad = &csi_pad_ops,
1733};
1734
1735static const struct v4l2_subdev_internal_ops csi_internal_ops = {
1736 .registered = csi_registered,
1737 .unregistered = csi_unregistered,
1738};
1739
1740static int imx_csi_probe(struct platform_device *pdev)
1741{
1742 struct ipu_client_platformdata *pdata;
1743 struct pinctrl *pinctrl;
1744 struct csi_priv *priv;
1745 int ret;
1746
1747 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1748 if (!priv)
1749 return -ENOMEM;
1750
1751 platform_set_drvdata(pdev, &priv->sd);
1752 priv->dev = &pdev->dev;
1753
1754 ret = dma_set_coherent_mask(priv->dev, DMA_BIT_MASK(32));
1755 if (ret)
1756 return ret;
1757
1758 /* get parent IPU */
1759 priv->ipu = dev_get_drvdata(priv->dev->parent);
1760
1761 /* get our CSI id */
1762 pdata = priv->dev->platform_data;
1763 priv->csi_id = pdata->csi;
1764 priv->smfc_id = (priv->csi_id == 0) ? 0 : 2;
1765
e99e88a9 1766 timer_setup(&priv->eof_timeout_timer, csi_idmac_eof_timeout, 0);
4a34ec8e
SL		 1767 spin_lock_init(&priv->irqlock);
1768
1769 v4l2_subdev_init(&priv->sd, &csi_subdev_ops);
1770 v4l2_set_subdevdata(&priv->sd, priv);
1771 priv->sd.internal_ops = &csi_internal_ops;
1772 priv->sd.entity.ops = &csi_entity_ops;
1773 priv->sd.entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
1774 priv->sd.dev = &pdev->dev;
1775 priv->sd.fwnode = of_fwnode_handle(pdata->of_node);
1776 priv->sd.owner = THIS_MODULE;
1777 priv->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
1778 priv->sd.grp_id = priv->csi_id ?
1779 IMX_MEDIA_GRP_ID_CSI1 : IMX_MEDIA_GRP_ID_CSI0;
1780 imx_media_grp_id_to_sd_name(priv->sd.name, sizeof(priv->sd.name),
1781 priv->sd.grp_id, ipu_get_num(priv->ipu));
1782
1783 priv->vdev = imx_media_capture_device_init(&priv->sd,
1784 CSI_SRC_PAD_IDMAC);
1785 if (IS_ERR(priv->vdev))
1786 return PTR_ERR(priv->vdev);
1787
1788 mutex_init(&priv->lock);
1789
1790 v4l2_ctrl_handler_init(&priv->ctrl_hdlr, 0);
1791 priv->sd.ctrl_handler = &priv->ctrl_hdlr;
1792
1793 /*
1794 * The IPUv3 driver did not assign an of_node to this
1795 * device. As a result, pinctrl does not automatically
1796 * configure our pin groups, so we need to do that manually
1797 * here, after setting this device's of_node.
1798 */
1799 priv->dev->of_node = pdata->of_node;
1800 pinctrl = devm_pinctrl_get_select_default(priv->dev);
52e17089 1801 if (IS_ERR(pinctrl)) {
2b7db29b 1802 ret = PTR_ERR(pinctrl);
dd5747fb
FE		 1803 dev_dbg(priv->dev,
1804 "devm_pinctrl_get_select_default() failed: %d\n", ret);
1805 if (ret != -ENODEV)
1806 goto free;
52e17089 1807 }
4a34ec8e
SL		 1808
1809 ret = v4l2_async_register_subdev(&priv->sd);
1810 if (ret)
1811 goto free;
1812
1813 return 0;
1814free:
1815 v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
1816 mutex_destroy(&priv->lock);
1817 imx_media_capture_device_remove(priv->vdev);
1818 return ret;
1819}
1820
1821static int imx_csi_remove(struct platform_device *pdev)
1822{
1823 struct v4l2_subdev *sd = platform_get_drvdata(pdev);
1824 struct csi_priv *priv = sd_to_dev(sd);
1825
1826 v4l2_ctrl_handler_free(&priv->ctrl_hdlr);
1827 mutex_destroy(&priv->lock);
1828 imx_media_capture_device_remove(priv->vdev);
1829 v4l2_async_unregister_subdev(sd);
1830 media_entity_cleanup(&sd->entity);
1831
1832 return 0;
1833}
1834
1835static const struct platform_device_id imx_csi_ids[] = {
1836 { .name = "imx-ipuv3-csi" },
1837 { },
1838};
1839MODULE_DEVICE_TABLE(platform, imx_csi_ids);
1840
1841static struct platform_driver imx_csi_driver = {
1842 .probe = imx_csi_probe,
1843 .remove = imx_csi_remove,
1844 .id_table = imx_csi_ids,
1845 .driver = {
1846 .name = "imx-ipuv3-csi",
1847 },
1848};
1849module_platform_driver(imx_csi_driver);
1850
1851MODULE_DESCRIPTION("i.MX CSI subdev driver");
1852MODULE_AUTHOR("Steve Longerbeam <steve_longerbeam@mentor.com>");
1853MODULE_LICENSE("GPL");
1854MODULE_ALIAS("platform:imx-ipuv3-csi");
Linux 6.x block layer and io_uring tree(s)