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[media] platform: Make use of media_bus_format enum
[linux-2.6-block.git] / drivers / media / platform / soc_camera / rcar_vin.c
CommitLineData
73135e96
VB		 1/*
2 * SoC-camera host driver for Renesas R-Car VIN unit
3 *
4 * Copyright (C) 2011-2013 Renesas Solutions Corp.
5 * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
6 *
7 * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c"
8 *
9 * Copyright (C) 2008 Magnus Damm
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16
17#include <linux/delay.h>
18#include <linux/interrupt.h>
3cdcf736 19#include <linux/io.h>
73135e96
VB		 20#include <linux/kernel.h>
21#include <linux/module.h>
47c71bd6
BD		 22#include <linux/of.h>
23#include <linux/of_device.h>
73135e96
VB		 24#include <linux/platform_data/camera-rcar.h>
25#include <linux/platform_device.h>
26#include <linux/pm_runtime.h>
27#include <linux/slab.h>
28#include <linux/videodev2.h>
29
30#include <media/soc_camera.h>
31#include <media/soc_mediabus.h>
32#include <media/v4l2-common.h>
33#include <media/v4l2-dev.h>
34#include <media/v4l2-device.h>
35#include <media/v4l2-mediabus.h>
47c71bd6 36#include <media/v4l2-of.h>
73135e96
VB		 37#include <media/v4l2-subdev.h>
38#include <media/videobuf2-dma-contig.h>
39
40#include "soc_scale_crop.h"
41
42#define DRV_NAME "rcar_vin"
43
44/* Register offsets for R-Car VIN */
45#define VNMC_REG 0x00 /* Video n Main Control Register */
46#define VNMS_REG 0x04 /* Video n Module Status Register */
47#define VNFC_REG 0x08 /* Video n Frame Capture Register */
48#define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */
49#define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */
50#define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */
51#define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */
52#define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */
53#define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */
54#define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */
55#define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */
56#define VNIS_REG 0x2C /* Video n Image Stride Register */
57#define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */
58#define VNIE_REG 0x40 /* Video n Interrupt Enable Register */
59#define VNINTS_REG 0x44 /* Video n Interrupt Status Register */
60#define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */
61#define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */
62#define VNYS_REG 0x50 /* Video n Y Scale Register */
63#define VNXS_REG 0x54 /* Video n X Scale Register */
64#define VNDMR_REG 0x58 /* Video n Data Mode Register */
65#define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */
66#define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */
67
68/* Register bit fields for R-Car VIN */
69/* Video n Main Control Register bits */
70#define VNMC_FOC (1 << 21)
71#define VNMC_YCAL (1 << 19)
72#define VNMC_INF_YUV8_BT656 (0 << 16)
73#define VNMC_INF_YUV8_BT601 (1 << 16)
cbe504d4
PE		 74#define VNMC_INF_YUV10_BT656 (2 << 16)
75#define VNMC_INF_YUV10_BT601 (3 << 16)
73135e96
VB		 76#define VNMC_INF_YUV16 (5 << 16)
77#define VNMC_VUP (1 << 10)
78#define VNMC_IM_ODD (0 << 3)
79#define VNMC_IM_ODD_EVEN (1 << 3)
80#define VNMC_IM_EVEN (2 << 3)
81#define VNMC_IM_FULL (3 << 3)
82#define VNMC_BPS (1 << 1)
83#define VNMC_ME (1 << 0)
84
85/* Video n Module Status Register bits */
86#define VNMS_FBS_MASK (3 << 3)
87#define VNMS_FBS_SHIFT 3
88#define VNMS_AV (1 << 1)
89#define VNMS_CA (1 << 0)
90
91/* Video n Frame Capture Register bits */
92#define VNFC_C_FRAME (1 << 1)
93#define VNFC_S_FRAME (1 << 0)
94
95/* Video n Interrupt Enable Register bits */
96#define VNIE_FIE (1 << 4)
97#define VNIE_EFE (1 << 1)
98
99/* Video n Data Mode Register bits */
100#define VNDMR_EXRGB (1 << 8)
101#define VNDMR_BPSM (1 << 4)
102#define VNDMR_DTMD_YCSEP (1 << 1)
103#define VNDMR_DTMD_ARGB1555 (1 << 0)
104
105/* Video n Data Mode Register 2 bits */
106#define VNDMR2_VPS (1 << 30)
107#define VNDMR2_HPS (1 << 29)
108#define VNDMR2_FTEV (1 << 17)
109
110#define VIN_MAX_WIDTH 2048
111#define VIN_MAX_HEIGHT 2048
112
113enum chip_id {
2a9ecc17 114 RCAR_GEN2,
73135e96
VB		 115 RCAR_H1,
116 RCAR_M1,
117 RCAR_E1,
118};
119
120enum rcar_vin_state {
121 STOPPED = 0,
122 RUNNING,
123 STOPPING,
124};
125
126struct rcar_vin_priv {
127 void __iomem *base;
128 spinlock_t lock;
129 int sequence;
130 /* State of the VIN module in capturing mode */
131 enum rcar_vin_state state;
73135e96
VB		 132 struct soc_camera_host ici;
133 struct list_head capture;
134#define MAX_BUFFER_NUM 3
135 struct vb2_buffer *queue_buf[MAX_BUFFER_NUM];
136 struct vb2_alloc_ctx *alloc_ctx;
137 enum v4l2_field field;
25dfa02c 138 unsigned int pdata_flags;
73135e96
VB		 139 unsigned int vb_count;
140 unsigned int nr_hw_slots;
141 bool request_to_stop;
142 struct completion capture_stop;
143 enum chip_id chip;
144};
145
146#define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM)
147
148struct rcar_vin_buffer {
149 struct vb2_buffer vb;
150 struct list_head list;
151};
152
153#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
154 struct rcar_vin_buffer, \
155 vb)->list)
156
157struct rcar_vin_cam {
158 /* VIN offsets within the camera output, before the VIN scaler */
159 unsigned int vin_left;
160 unsigned int vin_top;
161 /* Client output, as seen by the VIN */
162 unsigned int width;
163 unsigned int height;
164 /*
165 * User window from S_CROP / G_CROP, produced by client cropping and
166 * scaling, VIN scaling and VIN cropping, mapped back onto the client
167 * input window
168 */
169 struct v4l2_rect subrect;
170 /* Camera cropping rectangle */
171 struct v4l2_rect rect;
172 const struct soc_mbus_pixelfmt *extra_fmt;
173};
174
175/*
176 * .queue_setup() is called to check whether the driver can accept the requested
177 * number of buffers and to fill in plane sizes for the current frame format if
178 * required
179 */
180static int rcar_vin_videobuf_setup(struct vb2_queue *vq,
181 const struct v4l2_format *fmt,
182 unsigned int *count,
183 unsigned int *num_planes,
184 unsigned int sizes[], void *alloc_ctxs[])
185{
186 struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
187 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
188 struct rcar_vin_priv *priv = ici->priv;
189
190 if (fmt) {
191 const struct soc_camera_format_xlate *xlate;
192 unsigned int bytes_per_line;
193 int ret;
194
195 xlate = soc_camera_xlate_by_fourcc(icd,
196 fmt->fmt.pix.pixelformat);
197 if (!xlate)
198 return -EINVAL;
199 ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
200 xlate->host_fmt);
201 if (ret < 0)
202 return ret;
203
204 bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret);
205
206 ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line,
207 fmt->fmt.pix.height);
208 if (ret < 0)
209 return ret;
210
211 sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret);
212 } else {
213 /* Called from VIDIOC_REQBUFS or in compatibility mode */
214 sizes[0] = icd->sizeimage;
215 }
216
217 alloc_ctxs[0] = priv->alloc_ctx;
218
219 if (!vq->num_buffers)
220 priv->sequence = 0;
221
222 if (!*count)
223 *count = 2;
224 priv->vb_count = *count;
225
226 *num_planes = 1;
227
228 /* Number of hardware slots */
229 if (is_continuous_transfer(priv))
230 priv->nr_hw_slots = MAX_BUFFER_NUM;
231 else
232 priv->nr_hw_slots = 1;
233
234 dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]);
235
236 return 0;
237}
238
239static int rcar_vin_setup(struct rcar_vin_priv *priv)
240{
241 struct soc_camera_device *icd = priv->ici.icd;
242 struct rcar_vin_cam *cam = icd->host_priv;
243 u32 vnmc, dmr, interrupts;
244 bool progressive = false, output_is_yuv = false;
245
246 switch (priv->field) {
247 case V4L2_FIELD_TOP:
248 vnmc = VNMC_IM_ODD;
249 break;
250 case V4L2_FIELD_BOTTOM:
251 vnmc = VNMC_IM_EVEN;
252 break;
253 case V4L2_FIELD_INTERLACED:
254 case V4L2_FIELD_INTERLACED_TB:
255 vnmc = VNMC_IM_FULL;
256 break;
257 case V4L2_FIELD_INTERLACED_BT:
258 vnmc = VNMC_IM_FULL | VNMC_FOC;
259 break;
260 case V4L2_FIELD_NONE:
261 if (is_continuous_transfer(priv)) {
262 vnmc = VNMC_IM_ODD_EVEN;
263 progressive = true;
264 } else {
265 vnmc = VNMC_IM_ODD;
266 }
267 break;
268 default:
269 vnmc = VNMC_IM_ODD;
270 break;
271 }
272
273 /* input interface */
274 switch (icd->current_fmt->code) {
27ffaeb0 275 case MEDIA_BUS_FMT_YUYV8_1X16:
73135e96
VB		 276 /* BT.601/BT.1358 16bit YCbCr422 */
277 vnmc |= VNMC_INF_YUV16;
278 break;
27ffaeb0 279 case MEDIA_BUS_FMT_YUYV8_2X8:
73135e96 280 /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
25dfa02c 281 vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
73135e96 282 VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
cbe504d4 283 break;
27ffaeb0 284 case MEDIA_BUS_FMT_YUYV10_2X10:
cbe504d4 285 /* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */
25dfa02c 286 vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ?
cbe504d4
PE		 287 VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
288 break;
73135e96
VB		 289 default:
290 break;
291 }
292
293 /* output format */
294 switch (icd->current_fmt->host_fmt->fourcc) {
295 case V4L2_PIX_FMT_NV16:
296 iowrite32(ALIGN(cam->width * cam->height, 0x80),
297 priv->base + VNUVAOF_REG);
298 dmr = VNDMR_DTMD_YCSEP;
299 output_is_yuv = true;
300 break;
301 case V4L2_PIX_FMT_YUYV:
302 dmr = VNDMR_BPSM;
303 output_is_yuv = true;
304 break;
305 case V4L2_PIX_FMT_UYVY:
306 dmr = 0;
307 output_is_yuv = true;
308 break;
309 case V4L2_PIX_FMT_RGB555X:
310 dmr = VNDMR_DTMD_ARGB1555;
311 break;
312 case V4L2_PIX_FMT_RGB565:
313 dmr = 0;
314 break;
315 case V4L2_PIX_FMT_RGB32:
2a9ecc17 316 if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 ||
ca0c9f17 317 priv->chip == RCAR_E1) {
73135e96
VB		 318 dmr = VNDMR_EXRGB;
319 break;
320 }
321 default:
322 dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n",
323 icd->current_fmt->host_fmt->fourcc);
324 return -EINVAL;
325 }
326
327 /* Always update on field change */
328 vnmc |= VNMC_VUP;
329
330 /* If input and output use the same colorspace, use bypass mode */
331 if (output_is_yuv)
332 vnmc |= VNMC_BPS;
333
334 /* progressive or interlaced mode */
335 interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE;
336
337 /* ack interrupts */
338 iowrite32(interrupts, priv->base + VNINTS_REG);
339 /* enable interrupts */
340 iowrite32(interrupts, priv->base + VNIE_REG);
341 /* start capturing */
342 iowrite32(dmr, priv->base + VNDMR_REG);
343 iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG);
344
345 return 0;
346}
347
348static void rcar_vin_capture(struct rcar_vin_priv *priv)
349{
350 if (is_continuous_transfer(priv))
351 /* Continuous Frame Capture Mode */
352 iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG);
353 else
354 /* Single Frame Capture Mode */
355 iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG);
356}
357
358static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv)
359{
360 priv->state = STOPPING;
361
362 /* set continuous & single transfer off */
363 iowrite32(0, priv->base + VNFC_REG);
364 /* disable capture (release DMA buffer), reset */
365 iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
366 priv->base + VNMC_REG);
367
368 /* update the status if stopped already */
369 if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA))
370 priv->state = STOPPED;
371}
372
373static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv)
374{
375 int slot;
376
377 for (slot = 0; slot < priv->nr_hw_slots; slot++)
378 if (priv->queue_buf[slot] == NULL)
379 return slot;
380
381 return -1;
382}
383
384static int rcar_vin_hw_ready(struct rcar_vin_priv *priv)
385{
386 /* Ensure all HW slots are filled */
387 return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0;
388}
389
390/* Moves a buffer from the queue to the HW slots */
391static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv)
392{
393 struct vb2_buffer *vb;
394 dma_addr_t phys_addr_top;
395 int slot;
396
397 if (list_empty(&priv->capture))
398 return 0;
399
400 /* Find a free HW slot */
401 slot = rcar_vin_get_free_hw_slot(priv);
402 if (slot < 0)
403 return 0;
404
405 vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb;
406 list_del_init(to_buf_list(vb));
407 priv->queue_buf[slot] = vb;
408 phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0);
409 iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
410
411 return 1;
412}
413
414static void rcar_vin_videobuf_queue(struct vb2_buffer *vb)
415{
416 struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
417 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
418 struct rcar_vin_priv *priv = ici->priv;
419 unsigned long size;
420
421 size = icd->sizeimage;
422
423 if (vb2_plane_size(vb, 0) < size) {
424 dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n",
425 vb->v4l2_buf.index, vb2_plane_size(vb, 0), size);
426 goto error;
427 }
428
429 vb2_set_plane_payload(vb, 0, size);
430
431 dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
432 vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
433
434 spin_lock_irq(&priv->lock);
435
436 list_add_tail(to_buf_list(vb), &priv->capture);
437 rcar_vin_fill_hw_slot(priv);
438
439 /* If we weren't running, and have enough buffers, start capturing! */
440 if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) {
441 if (rcar_vin_setup(priv)) {
442 /* Submit error */
443 list_del_init(to_buf_list(vb));
444 spin_unlock_irq(&priv->lock);
445 goto error;
446 }
447 priv->request_to_stop = false;
448 init_completion(&priv->capture_stop);
449 priv->state = RUNNING;
450 rcar_vin_capture(priv);
451 }
452
453 spin_unlock_irq(&priv->lock);
454
455 return;
456
457error:
458 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
459}
460
461static void rcar_vin_videobuf_release(struct vb2_buffer *vb)
462{
463 struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
464 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
465 struct rcar_vin_priv *priv = ici->priv;
466 unsigned int i;
467 int buf_in_use = 0;
468
469 spin_lock_irq(&priv->lock);
470
471 /* Is the buffer in use by the VIN hardware? */
472 for (i = 0; i < MAX_BUFFER_NUM; i++) {
473 if (priv->queue_buf[i] == vb) {
474 buf_in_use = 1;
475 break;
476 }
477 }
478
479 if (buf_in_use) {
480 while (priv->state != STOPPED) {
481
482 /* issue stop if running */
483 if (priv->state == RUNNING)
484 rcar_vin_request_capture_stop(priv);
485
486 /* wait until capturing has been stopped */
487 if (priv->state == STOPPING) {
488 priv->request_to_stop = true;
489 spin_unlock_irq(&priv->lock);
490 wait_for_completion(&priv->capture_stop);
491 spin_lock_irq(&priv->lock);
492 }
493 }
494 /*
495 * Capturing has now stopped. The buffer we have been asked
496 * to release could be any of the current buffers in use, so
497 * release all buffers that are in use by HW
498 */
499 for (i = 0; i < MAX_BUFFER_NUM; i++) {
500 if (priv->queue_buf[i]) {
501 vb2_buffer_done(priv->queue_buf[i],
502 VB2_BUF_STATE_ERROR);
503 priv->queue_buf[i] = NULL;
504 }
505 }
506 } else {
507 list_del_init(to_buf_list(vb));
508 }
509
510 spin_unlock_irq(&priv->lock);
511}
512
513static int rcar_vin_videobuf_init(struct vb2_buffer *vb)
514{
515 INIT_LIST_HEAD(to_buf_list(vb));
516 return 0;
517}
518
e37559b2 519static void rcar_vin_stop_streaming(struct vb2_queue *vq)
73135e96
VB		 520{
521 struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
522 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
523 struct rcar_vin_priv *priv = ici->priv;
524 struct list_head *buf_head, *tmp;
525
526 spin_lock_irq(&priv->lock);
527 list_for_each_safe(buf_head, tmp, &priv->capture)
528 list_del_init(buf_head);
529 spin_unlock_irq(&priv->lock);
73135e96
VB		 530}
531
532static struct vb2_ops rcar_vin_vb2_ops = {
533 .queue_setup = rcar_vin_videobuf_setup,
534 .buf_init = rcar_vin_videobuf_init,
535 .buf_cleanup = rcar_vin_videobuf_release,
536 .buf_queue = rcar_vin_videobuf_queue,
537 .stop_streaming = rcar_vin_stop_streaming,
538 .wait_prepare = soc_camera_unlock,
539 .wait_finish = soc_camera_lock,
540};
541
542static irqreturn_t rcar_vin_irq(int irq, void *data)
543{
544 struct rcar_vin_priv *priv = data;
545 u32 int_status;
546 bool can_run = false, hw_stopped;
547 int slot;
548 unsigned int handled = 0;
549
550 spin_lock(&priv->lock);
551
552 int_status = ioread32(priv->base + VNINTS_REG);
553 if (!int_status)
554 goto done;
555 /* ack interrupts */
556 iowrite32(int_status, priv->base + VNINTS_REG);
557 handled = 1;
558
559 /* nothing to do if capture status is 'STOPPED' */
560 if (priv->state == STOPPED)
561 goto done;
562
563 hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA);
564
565 if (!priv->request_to_stop) {
566 if (is_continuous_transfer(priv))
567 slot = (ioread32(priv->base + VNMS_REG) &
568 VNMS_FBS_MASK) >> VNMS_FBS_SHIFT;
569 else
570 slot = 0;
571
572 priv->queue_buf[slot]->v4l2_buf.field = priv->field;
573 priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++;
574 do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp);
575 vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE);
576 priv->queue_buf[slot] = NULL;
577
578 if (priv->state != STOPPING)
579 can_run = rcar_vin_fill_hw_slot(priv);
580
581 if (hw_stopped || !can_run) {
582 priv->state = STOPPED;
583 } else if (is_continuous_transfer(priv) &&
584 list_empty(&priv->capture) &&
585 priv->state == RUNNING) {
586 /*
587 * The continuous capturing requires an explicit stop
588 * operation when there is no buffer to be set into
589 * the VnMBm registers.
590 */
591 rcar_vin_request_capture_stop(priv);
592 } else {
593 rcar_vin_capture(priv);
594 }
595
596 } else if (hw_stopped) {
597 priv->state = STOPPED;
598 priv->request_to_stop = false;
599 complete(&priv->capture_stop);
600 }
601
602done:
603 spin_unlock(&priv->lock);
604
605 return IRQ_RETVAL(handled);
606}
607
608static int rcar_vin_add_device(struct soc_camera_device *icd)
609{
610 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
611 struct rcar_vin_priv *priv = ici->priv;
612 int i;
613
614 for (i = 0; i < MAX_BUFFER_NUM; i++)
615 priv->queue_buf[i] = NULL;
616
617 pm_runtime_get_sync(ici->v4l2_dev.dev);
618
619 dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n",
620 icd->devnum);
621
622 return 0;
623}
624
625static void rcar_vin_remove_device(struct soc_camera_device *icd)
626{
627 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
628 struct rcar_vin_priv *priv = ici->priv;
629 struct vb2_buffer *vb;
630 int i;
631
632 /* disable capture, disable interrupts */
633 iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
634 priv->base + VNMC_REG);
635 iowrite32(0, priv->base + VNIE_REG);
636
637 priv->state = STOPPED;
638 priv->request_to_stop = false;
639
640 /* make sure active buffer is cancelled */
641 spin_lock_irq(&priv->lock);
642 for (i = 0; i < MAX_BUFFER_NUM; i++) {
643 vb = priv->queue_buf[i];
644 if (vb) {
645 list_del_init(to_buf_list(vb));
646 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
647 }
648 }
649 spin_unlock_irq(&priv->lock);
650
651 pm_runtime_put(ici->v4l2_dev.dev);
652
653 dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n",
654 icd->devnum);
655}
656
657/* Called with .host_lock held */
658static int rcar_vin_clock_start(struct soc_camera_host *ici)
659{
660 /* VIN does not have "mclk" */
661 return 0;
662}
663
664/* Called with .host_lock held */
665static void rcar_vin_clock_stop(struct soc_camera_host *ici)
666{
667 /* VIN does not have "mclk" */
668}
669
670/* rect is guaranteed to not exceed the scaled camera rectangle */
671static int rcar_vin_set_rect(struct soc_camera_device *icd)
672{
673 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
674 struct rcar_vin_cam *cam = icd->host_priv;
675 struct rcar_vin_priv *priv = ici->priv;
676 unsigned int left_offset, top_offset;
677 unsigned char dsize = 0;
678 struct v4l2_rect *cam_subrect = &cam->subrect;
679
680 dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n",
681 icd->user_width, icd->user_height, cam->vin_left, cam->vin_top);
682
683 left_offset = cam->vin_left;
684 top_offset = cam->vin_top;
685
686 if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 &&
687 priv->chip == RCAR_E1)
688 dsize = 1;
689
690 dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n",
691 cam->width, cam->height, cam->vin_left, cam->vin_top);
692 dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n",
693 cam_subrect->width, cam_subrect->height,
694 cam_subrect->left, cam_subrect->top);
695
696 /* Set Start/End Pixel/Line Pre-Clip */
697 iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG);
698 iowrite32((left_offset + cam->width - 1) << dsize,
699 priv->base + VNEPPRC_REG);
700 switch (priv->field) {
701 case V4L2_FIELD_INTERLACED:
702 case V4L2_FIELD_INTERLACED_TB:
703 case V4L2_FIELD_INTERLACED_BT:
704 iowrite32(top_offset / 2, priv->base + VNSLPRC_REG);
705 iowrite32((top_offset + cam->height) / 2 - 1,
706 priv->base + VNELPRC_REG);
707 break;
708 default:
709 iowrite32(top_offset, priv->base + VNSLPRC_REG);
710 iowrite32(top_offset + cam->height - 1,
711 priv->base + VNELPRC_REG);
712 break;
713 }
714
715 /* Set Start/End Pixel/Line Post-Clip */
716 iowrite32(0, priv->base + VNSPPOC_REG);
717 iowrite32(0, priv->base + VNSLPOC_REG);
718 iowrite32((cam_subrect->width - 1) << dsize, priv->base + VNEPPOC_REG);
719 switch (priv->field) {
720 case V4L2_FIELD_INTERLACED:
721 case V4L2_FIELD_INTERLACED_TB:
722 case V4L2_FIELD_INTERLACED_BT:
723 iowrite32(cam_subrect->height / 2 - 1,
724 priv->base + VNELPOC_REG);
725 break;
726 default:
727 iowrite32(cam_subrect->height - 1, priv->base + VNELPOC_REG);
728 break;
729 }
730
731 iowrite32(ALIGN(cam->width, 0x10), priv->base + VNIS_REG);
732
733 return 0;
734}
735
736static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc)
737{
738 *vnmc = ioread32(priv->base + VNMC_REG);
739 /* module disable */
740 iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG);
741}
742
743static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc)
744{
745 unsigned long timeout = jiffies + 10 * HZ;
746
747 /*
748 * Wait until the end of the current frame. It can take a long time,
749 * but if it has been aborted by a MRST1 reset, it should exit sooner.
750 */
751 while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) &&
752 time_before(jiffies, timeout))
753 msleep(1);
754
755 if (time_after(jiffies, timeout)) {
756 dev_err(priv->ici.v4l2_dev.dev,
757 "Timeout waiting for frame end! Interface problem?\n");
758 return;
759 }
760
761 iowrite32(vnmc, priv->base + VNMC_REG);
762}
763
764#define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \
765 V4L2_MBUS_PCLK_SAMPLE_RISING | \
766 V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
767 V4L2_MBUS_HSYNC_ACTIVE_LOW | \
768 V4L2_MBUS_VSYNC_ACTIVE_HIGH | \
769 V4L2_MBUS_VSYNC_ACTIVE_LOW | \
770 V4L2_MBUS_DATA_ACTIVE_HIGH)
771
772static int rcar_vin_set_bus_param(struct soc_camera_device *icd)
773{
774 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
775 struct rcar_vin_priv *priv = ici->priv;
776 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
777 struct v4l2_mbus_config cfg;
778 unsigned long common_flags;
779 u32 vnmc;
780 u32 val;
781 int ret;
782
783 capture_stop_preserve(priv, &vnmc);
784
785 ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
786 if (!ret) {
787 common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
788 if (!common_flags) {
789 dev_warn(icd->parent,
790 "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
791 cfg.flags, VIN_MBUS_FLAGS);
792 return -EINVAL;
793 }
794 } else if (ret != -ENOIOCTLCMD) {
795 return ret;
796 } else {
797 common_flags = VIN_MBUS_FLAGS;
798 }
799
800 /* Make choises, based on platform preferences */
801 if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
802 (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
25dfa02c 803 if (priv->pdata_flags & RCAR_VIN_HSYNC_ACTIVE_LOW)
73135e96
VB		 804 common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
805 else
806 common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
807 }
808
809 if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
810 (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
25dfa02c 811 if (priv->pdata_flags & RCAR_VIN_VSYNC_ACTIVE_LOW)
73135e96
VB		 812 common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
813 else
814 common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
815 }
816
817 cfg.flags = common_flags;
818 ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
819 if (ret < 0 && ret != -ENOIOCTLCMD)
820 return ret;
821
822 val = priv->field == V4L2_FIELD_NONE ? VNDMR2_FTEV : 0;
823 if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
824 val |= VNDMR2_VPS;
825 if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
826 val |= VNDMR2_HPS;
827 iowrite32(val, priv->base + VNDMR2_REG);
828
829 ret = rcar_vin_set_rect(icd);
830 if (ret < 0)
831 return ret;
832
833 capture_restore(priv, vnmc);
834
835 return 0;
836}
837
838static int rcar_vin_try_bus_param(struct soc_camera_device *icd,
839 unsigned char buswidth)
840{
841 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
842 struct v4l2_mbus_config cfg;
843 int ret;
844
845 ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
846 if (ret == -ENOIOCTLCMD)
847 return 0;
848 else if (ret)
849 return ret;
850
851 if (buswidth > 24)
852 return -EINVAL;
853
854 /* check is there common mbus flags */
855 ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
856 if (ret)
857 return 0;
858
859 dev_warn(icd->parent,
860 "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
861 cfg.flags, VIN_MBUS_FLAGS);
862
863 return -EINVAL;
864}
865
866static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt)
867{
868 return fmt->packing == SOC_MBUS_PACKING_NONE ||
869 (fmt->bits_per_sample > 8 &&
870 fmt->packing == SOC_MBUS_PACKING_EXTEND16);
871}
872
873static const struct soc_mbus_pixelfmt rcar_vin_formats[] = {
874 {
875 .fourcc = V4L2_PIX_FMT_NV16,
876 .name = "NV16",
877 .bits_per_sample = 8,
878 .packing = SOC_MBUS_PACKING_2X8_PADHI,
879 .order = SOC_MBUS_ORDER_LE,
880 .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C,
881 },
882 {
883 .fourcc = V4L2_PIX_FMT_UYVY,
884 .name = "UYVY",
885 .bits_per_sample = 16,
886 .packing = SOC_MBUS_PACKING_NONE,
887 .order = SOC_MBUS_ORDER_LE,
888 .layout = SOC_MBUS_LAYOUT_PACKED,
889 },
890 {
891 .fourcc = V4L2_PIX_FMT_RGB565,
892 .name = "RGB565",
893 .bits_per_sample = 16,
894 .packing = SOC_MBUS_PACKING_NONE,
895 .order = SOC_MBUS_ORDER_LE,
896 .layout = SOC_MBUS_LAYOUT_PACKED,
897 },
898 {
899 .fourcc = V4L2_PIX_FMT_RGB555X,
900 .name = "ARGB1555",
901 .bits_per_sample = 16,
902 .packing = SOC_MBUS_PACKING_NONE,
903 .order = SOC_MBUS_ORDER_LE,
904 .layout = SOC_MBUS_LAYOUT_PACKED,
905 },
906 {
907 .fourcc = V4L2_PIX_FMT_RGB32,
908 .name = "RGB888",
909 .bits_per_sample = 32,
910 .packing = SOC_MBUS_PACKING_NONE,
911 .order = SOC_MBUS_ORDER_LE,
912 .layout = SOC_MBUS_LAYOUT_PACKED,
913 },
914};
915
916static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx,
917 struct soc_camera_format_xlate *xlate)
918{
919 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
920 struct device *dev = icd->parent;
921 int ret, k, n;
922 int formats = 0;
923 struct rcar_vin_cam *cam;
27ffaeb0 924 u32 code;
73135e96
VB		 925 const struct soc_mbus_pixelfmt *fmt;
926
927 ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
928 if (ret < 0)
929 return 0;
930
931 fmt = soc_mbus_get_fmtdesc(code);
932 if (!fmt) {
933 dev_warn(dev, "unsupported format code #%u: %d\n", idx, code);
934 return 0;
935 }
936
937 ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample);
938 if (ret < 0)
939 return 0;
940
941 if (!icd->host_priv) {
942 struct v4l2_mbus_framefmt mf;
943 struct v4l2_rect rect;
944 struct device *dev = icd->parent;
945 int shift;
946
947 ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
948 if (ret < 0)
949 return ret;
950
951 /* Cache current client geometry */
952 ret = soc_camera_client_g_rect(sd, &rect);
953 if (ret == -ENOIOCTLCMD) {
954 /* Sensor driver doesn't support cropping */
955 rect.left = 0;
956 rect.top = 0;
957 rect.width = mf.width;
958 rect.height = mf.height;
959 } else if (ret < 0) {
960 return ret;
961 }
962
963 /*
964 * If sensor proposes too large format then try smaller ones:
965 * 1280x960, 640x480, 320x240
966 */
967 for (shift = 0; shift < 3; shift++) {
968 if (mf.width <= VIN_MAX_WIDTH &&
969 mf.height <= VIN_MAX_HEIGHT)
970 break;
971
972 mf.width = 1280 >> shift;
973 mf.height = 960 >> shift;
974 ret = v4l2_device_call_until_err(sd->v4l2_dev,
975 soc_camera_grp_id(icd),
976 video, s_mbus_fmt,
977 &mf);
978 if (ret < 0)
979 return ret;
980 }
981
982 if (shift == 3) {
983 dev_err(dev,
197a47f2 984 "Failed to configure the client below %ux%u\n",
73135e96
VB		 985 mf.width, mf.height);
986 return -EIO;
987 }
988
989 dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height);
990
991 cam = kzalloc(sizeof(*cam), GFP_KERNEL);
992 if (!cam)
993 return -ENOMEM;
994 /*
995 * We are called with current camera crop,
996 * initialise subrect with it
997 */
998 cam->rect = rect;
999 cam->subrect = rect;
1000 cam->width = mf.width;
1001 cam->height = mf.height;
1002
1003 icd->host_priv = cam;
1004 } else {
1005 cam = icd->host_priv;
1006 }
1007
1008 /* Beginning of a pass */
1009 if (!idx)
1010 cam->extra_fmt = NULL;
1011
1012 switch (code) {
27ffaeb0
BB		 1013 case MEDIA_BUS_FMT_YUYV8_1X16:
1014 case MEDIA_BUS_FMT_YUYV8_2X8:
1015 case MEDIA_BUS_FMT_YUYV10_2X10:
73135e96
VB		 1016 if (cam->extra_fmt)
1017 break;
1018
1019 /* Add all our formats that can be generated by VIN */
1020 cam->extra_fmt = rcar_vin_formats;
1021
1022 n = ARRAY_SIZE(rcar_vin_formats);
1023 formats += n;
1024 for (k = 0; xlate && k < n; k++, xlate++) {
1025 xlate->host_fmt = &rcar_vin_formats[k];
1026 xlate->code = code;
1027 dev_dbg(dev, "Providing format %s using code %d\n",
1028 rcar_vin_formats[k].name, code);
1029 }
1030 break;
1031 default:
1032 if (!rcar_vin_packing_supported(fmt))
1033 return 0;
1034
1035 dev_dbg(dev, "Providing format %s in pass-through mode\n",
1036 fmt->name);
1037 break;
1038 }
1039
1040 /* Generic pass-through */
1041 formats++;
1042 if (xlate) {
1043 xlate->host_fmt = fmt;
1044 xlate->code = code;
1045 xlate++;
1046 }
1047
1048 return formats;
1049}
1050
1051static void rcar_vin_put_formats(struct soc_camera_device *icd)
1052{
1053 kfree(icd->host_priv);
1054 icd->host_priv = NULL;
1055}
1056
1057static int rcar_vin_set_crop(struct soc_camera_device *icd,
1058 const struct v4l2_crop *a)
1059{
1060 struct v4l2_crop a_writable = *a;
1061 const struct v4l2_rect *rect = &a_writable.c;
1062 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1063 struct rcar_vin_priv *priv = ici->priv;
1064 struct v4l2_crop cam_crop;
1065 struct rcar_vin_cam *cam = icd->host_priv;
1066 struct v4l2_rect *cam_rect = &cam_crop.c;
1067 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1068 struct device *dev = icd->parent;
1069 struct v4l2_mbus_framefmt mf;
1070 u32 vnmc;
1071 int ret, i;
1072
1073 dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height,
1074 rect->left, rect->top);
1075
1076 /* During camera cropping its output window can change too, stop VIN */
1077 capture_stop_preserve(priv, &vnmc);
1078 dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc);
1079
1080 /* Apply iterative camera S_CROP for new input window. */
1081 ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop,
1082 &cam->rect, &cam->subrect);
1083 if (ret < 0)
1084 return ret;
1085
1086 dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n",
1087 cam_rect->width, cam_rect->height,
1088 cam_rect->left, cam_rect->top);
1089
1090 /* On success cam_crop contains current camera crop */
1091
1092 /* Retrieve camera output window */
1093 ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
1094 if (ret < 0)
1095 return ret;
1096
1097 if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT)
1098 return -EINVAL;
1099
1100 /* Cache camera output window */
1101 cam->width = mf.width;
1102 cam->height = mf.height;
1103
1104 icd->user_width = cam->width;
1105 icd->user_height = cam->height;
1106
1107 cam->vin_left = rect->left & ~1;
1108 cam->vin_top = rect->top & ~1;
1109
1110 /* Use VIN cropping to crop to the new window. */
1111 ret = rcar_vin_set_rect(icd);
1112 if (ret < 0)
1113 return ret;
1114
1115 cam->subrect = *rect;
1116
1117 dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n",
1118 icd->user_width, icd->user_height,
1119 cam->vin_left, cam->vin_top);
1120
1121 /* Restore capture */
1122 for (i = 0; i < MAX_BUFFER_NUM; i++) {
1123 if (priv->queue_buf[i] && priv->state == STOPPED) {
1124 vnmc |= VNMC_ME;
1125 break;
1126 }
1127 }
1128 capture_restore(priv, vnmc);
1129
1130 /* Even if only camera cropping succeeded */
1131 return ret;
1132}
1133
1134static int rcar_vin_get_crop(struct soc_camera_device *icd,
1135 struct v4l2_crop *a)
1136{
1137 struct rcar_vin_cam *cam = icd->host_priv;
1138
1139 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1140 a->c = cam->subrect;
1141
1142 return 0;
1143}
1144
1145/* Similar to set_crop multistage iterative algorithm */
1146static int rcar_vin_set_fmt(struct soc_camera_device *icd,
1147 struct v4l2_format *f)
1148{
1149 struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
1150 struct rcar_vin_priv *priv = ici->priv;
1151 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1152 struct rcar_vin_cam *cam = icd->host_priv;
1153 struct v4l2_pix_format *pix = &f->fmt.pix;
1154 struct v4l2_mbus_framefmt mf;
1155 struct device *dev = icd->parent;
1156 __u32 pixfmt = pix->pixelformat;
1157 const struct soc_camera_format_xlate *xlate;
1158 unsigned int vin_sub_width = 0, vin_sub_height = 0;
1159 int ret;
1160 bool can_scale;
1161 enum v4l2_field field;
1162 v4l2_std_id std;
1163
1164 dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n",
1165 pixfmt, pix->width, pix->height);
1166
1167 switch (pix->field) {
1168 default:
1169 pix->field = V4L2_FIELD_NONE;
1170 /* fall-through */
1171 case V4L2_FIELD_NONE:
1172 case V4L2_FIELD_TOP:
1173 case V4L2_FIELD_BOTTOM:
1174 case V4L2_FIELD_INTERLACED_TB:
1175 case V4L2_FIELD_INTERLACED_BT:
1176 field = pix->field;
1177 break;
1178 case V4L2_FIELD_INTERLACED:
1179 /* Query for standard if not explicitly mentioned _TB/_BT */
1180 ret = v4l2_subdev_call(sd, video, querystd, &std);
1181 if (ret < 0)
1182 std = V4L2_STD_625_50;
1183
1184 field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB :
1185 V4L2_FIELD_INTERLACED_BT;
1186 break;
1187 }
1188
1189 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
1190 if (!xlate) {
1191 dev_warn(dev, "Format %x not found\n", pixfmt);
1192 return -EINVAL;
1193 }
1194 /* Calculate client output geometry */
1195 soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf,
1196 12);
1197 mf.field = pix->field;
1198 mf.colorspace = pix->colorspace;
1199 mf.code = xlate->code;
1200
1201 switch (pixfmt) {
1202 case V4L2_PIX_FMT_RGB32:
1203 can_scale = priv->chip != RCAR_E1;
1204 break;
1205 case V4L2_PIX_FMT_UYVY:
1206 case V4L2_PIX_FMT_YUYV:
1207 case V4L2_PIX_FMT_RGB565:
1208 case V4L2_PIX_FMT_RGB555X:
1209 can_scale = true;
1210 break;
1211 default:
1212 can_scale = false;
1213 break;
1214 }
1215
1216 dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height);
1217
1218 ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect,
1219 &mf, &vin_sub_width, &vin_sub_height,
1220 can_scale, 12);
1221
1222 /* Done with the camera. Now see if we can improve the result */
1223 dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
1224 ret, mf.width, mf.height, pix->width, pix->height);
1225
1226 if (ret == -ENOIOCTLCMD)
1227 dev_dbg(dev, "Sensor doesn't support scaling\n");
1228 else if (ret < 0)
1229 return ret;
1230
1231 if (mf.code != xlate->code)
1232 return -EINVAL;
1233
1234 /* Prepare VIN crop */
1235 cam->width = mf.width;
1236 cam->height = mf.height;
1237
1238 /* Use VIN scaling to scale to the requested user window. */
1239
1240 /* We cannot scale up */
1241 if (pix->width > vin_sub_width)
1242 vin_sub_width = pix->width;
1243
1244 if (pix->height > vin_sub_height)
1245 vin_sub_height = pix->height;
1246
1247 pix->colorspace = mf.colorspace;
1248
1249 if (!can_scale) {
1250 pix->width = vin_sub_width;
1251 pix->height = vin_sub_height;
1252 }
1253
1254 /*
1255 * We have calculated CFLCR, the actual configuration will be performed
1256 * in rcar_vin_set_bus_param()
1257 */
1258
1259 dev_dbg(dev, "W: %u : %u, H: %u : %u\n",
1260 vin_sub_width, pix->width, vin_sub_height, pix->height);
1261
1262 icd->current_fmt = xlate;
1263
1264 priv->field = field;
1265
1266 return 0;
1267}
1268
1269static int rcar_vin_try_fmt(struct soc_camera_device *icd,
1270 struct v4l2_format *f)
1271{
1272 const struct soc_camera_format_xlate *xlate;
1273 struct v4l2_pix_format *pix = &f->fmt.pix;
1274 struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
1275 struct v4l2_mbus_framefmt mf;
1276 __u32 pixfmt = pix->pixelformat;
1277 int width, height;
1278 int ret;
1279
1280 xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
1281 if (!xlate) {
1282 xlate = icd->current_fmt;
1283 dev_dbg(icd->parent, "Format %x not found, keeping %x\n",
1284 pixfmt, xlate->host_fmt->fourcc);
1285 pixfmt = xlate->host_fmt->fourcc;
1286 pix->pixelformat = pixfmt;
1287 pix->colorspace = icd->colorspace;
1288 }
1289
1290 /* FIXME: calculate using depth and bus width */
1291 v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1,
1292 &pix->height, 4, VIN_MAX_HEIGHT, 2, 0);
1293
1294 width = pix->width;
1295 height = pix->height;
1296
1297 /* let soc-camera calculate these values */
1298 pix->bytesperline = 0;
1299 pix->sizeimage = 0;
1300
1301 /* limit to sensor capabilities */
1302 mf.width = pix->width;
1303 mf.height = pix->height;
1304 mf.field = pix->field;
1305 mf.code = xlate->code;
1306 mf.colorspace = pix->colorspace;
1307
1308 ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd),
1309 video, try_mbus_fmt, &mf);
1310 if (ret < 0)
1311 return ret;
1312
1313 pix->width = mf.width;
1314 pix->height = mf.height;
1315 pix->field = mf.field;
1316 pix->colorspace = mf.colorspace;
1317
1318 if (pixfmt == V4L2_PIX_FMT_NV16) {
1319 /* FIXME: check against rect_max after converting soc-camera */
1320 /* We can scale precisely, need a bigger image from camera */
1321 if (pix->width < width || pix->height < height) {
1322 /*
1323 * We presume, the sensor behaves sanely, i.e. if
1324 * requested a bigger rectangle, it will not return a
1325 * smaller one.
1326 */
1327 mf.width = VIN_MAX_WIDTH;
1328 mf.height = VIN_MAX_HEIGHT;
1329 ret = v4l2_device_call_until_err(sd->v4l2_dev,
1330 soc_camera_grp_id(icd),
1331 video, try_mbus_fmt,
1332 &mf);
1333 if (ret < 0) {
1334 dev_err(icd->parent,
1335 "client try_fmt() = %d\n", ret);
1336 return ret;
1337 }
1338 }
1339 /* We will scale exactly */
1340 if (mf.width > width)
1341 pix->width = width;
1342 if (mf.height > height)
1343 pix->height = height;
1344 }
1345
1346 return ret;
1347}
1348
1349static unsigned int rcar_vin_poll(struct file *file, poll_table *pt)
1350{
1351 struct soc_camera_device *icd = file->private_data;
1352
1353 return vb2_poll(&icd->vb2_vidq, file, pt);
1354}
1355
1356static int rcar_vin_querycap(struct soc_camera_host *ici,
1357 struct v4l2_capability *cap)
1358{
1359 strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
1360 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
1361 return 0;
1362}
1363
1364static int rcar_vin_init_videobuf2(struct vb2_queue *vq,
1365 struct soc_camera_device *icd)
1366{
1367 vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1368 vq->io_modes = VB2_MMAP | VB2_USERPTR;
1369 vq->drv_priv = icd;
1370 vq->ops = &rcar_vin_vb2_ops;
1371 vq->mem_ops = &vb2_dma_contig_memops;
1372 vq->buf_struct_size = sizeof(struct rcar_vin_buffer);
ade48681 1373 vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
73135e96
VB		 1374
1375 return vb2_queue_init(vq);
1376}
1377
1378static struct soc_camera_host_ops rcar_vin_host_ops = {
1379 .owner = THIS_MODULE,
1380 .add = rcar_vin_add_device,
1381 .remove = rcar_vin_remove_device,
1382 .clock_start = rcar_vin_clock_start,
1383 .clock_stop = rcar_vin_clock_stop,
1384 .get_formats = rcar_vin_get_formats,
1385 .put_formats = rcar_vin_put_formats,
1386 .get_crop = rcar_vin_get_crop,
1387 .set_crop = rcar_vin_set_crop,
1388 .try_fmt = rcar_vin_try_fmt,
1389 .set_fmt = rcar_vin_set_fmt,
1390 .poll = rcar_vin_poll,
1391 .querycap = rcar_vin_querycap,
1392 .set_bus_param = rcar_vin_set_bus_param,
1393 .init_videobuf2 = rcar_vin_init_videobuf2,
1394};
1395
47c71bd6
BD		 1396#ifdef CONFIG_OF
1397static struct of_device_id rcar_vin_of_table[] = {
1398 { .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 },
1399 { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 },
1400 { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 },
1401 { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 },
1402 { },
1403};
1404MODULE_DEVICE_TABLE(of, rcar_vin_of_table);
1405#endif
1406
73135e96 1407static struct platform_device_id rcar_vin_id_table[] = {
2a9ecc17
VB		 1408 { "r8a7791-vin", RCAR_GEN2 },
1409 { "r8a7790-vin", RCAR_GEN2 },
73135e96
VB		 1410 { "r8a7779-vin", RCAR_H1 },
1411 { "r8a7778-vin", RCAR_M1 },
1412 { "uPD35004-vin", RCAR_E1 },
1413 {},
1414};
1415MODULE_DEVICE_TABLE(platform, rcar_vin_id_table);
1416
1417static int rcar_vin_probe(struct platform_device *pdev)
1418{
47c71bd6 1419 const struct of_device_id *match = NULL;
73135e96
VB		 1420 struct rcar_vin_priv *priv;
1421 struct resource *mem;
1422 struct rcar_vin_platform_data *pdata;
47c71bd6 1423 unsigned int pdata_flags;
73135e96
VB		 1424 int irq, ret;
1425
47c71bd6
BD		 1426 if (pdev->dev.of_node) {
1427 struct v4l2_of_endpoint ep;
1428 struct device_node *np;
1429
1430 match = of_match_device(of_match_ptr(rcar_vin_of_table),
1431 &pdev->dev);
1432
1433 np = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
1434 if (!np) {
1435 dev_err(&pdev->dev, "could not find endpoint\n");
1436 return -EINVAL;
1437 }
1438
1439 ret = v4l2_of_parse_endpoint(np, &ep);
1440 if (ret) {
1441 dev_err(&pdev->dev, "could not parse endpoint\n");
1442 return ret;
1443 }
1444
1445 if (ep.bus_type == V4L2_MBUS_BT656)
1446 pdata_flags = RCAR_VIN_BT656;
1447 else {
1448 pdata_flags = 0;
1449 if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
1450 pdata_flags |= RCAR_VIN_HSYNC_ACTIVE_LOW;
1451 if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
1452 pdata_flags |= RCAR_VIN_VSYNC_ACTIVE_LOW;
1453 }
1454
1455 of_node_put(np);
1456
1457 dev_dbg(&pdev->dev, "pdata_flags = %08x\n", pdata_flags);
1458 } else {
1459 pdata = pdev->dev.platform_data;
1460 if (!pdata || !pdata->flags) {
1461 dev_err(&pdev->dev, "platform data not set\n");
1462 return -EINVAL;
1463 }
1464 pdata_flags = pdata->flags;
73135e96
VB		 1465 }
1466
1467 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1468 if (mem == NULL)
1469 return -EINVAL;
1470
1471 irq = platform_get_irq(pdev, 0);
1472 if (irq <= 0)
1473 return -EINVAL;
1474
1475 priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv),
1476 GFP_KERNEL);
1477 if (!priv)
1478 return -ENOMEM;
1479
1480 priv->base = devm_ioremap_resource(&pdev->dev, mem);
1481 if (IS_ERR(priv->base))
1482 return PTR_ERR(priv->base);
1483
1484 ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED,
1485 dev_name(&pdev->dev), priv);
1486 if (ret)
1487 return ret;
1488
1489 priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1490 if (IS_ERR(priv->alloc_ctx))
1491 return PTR_ERR(priv->alloc_ctx);
1492
1493 priv->ici.priv = priv;
1494 priv->ici.v4l2_dev.dev = &pdev->dev;
73135e96
VB		 1495 priv->ici.drv_name = dev_name(&pdev->dev);
1496 priv->ici.ops = &rcar_vin_host_ops;
1497
47c71bd6
BD		 1498 priv->pdata_flags = pdata_flags;
1499 if (!match) {
1500 priv->ici.nr = pdev->id;
1501 priv->chip = pdev->id_entry->driver_data;
1502 } else {
1503 priv->ici.nr = of_alias_get_id(pdev->dev.of_node, "vin");
1504 priv->chip = (enum chip_id)match->data;
c611c908 1505 }
47c71bd6 1506
73135e96
VB		 1507 spin_lock_init(&priv->lock);
1508 INIT_LIST_HEAD(&priv->capture);
1509
1510 priv->state = STOPPED;
1511
1512 pm_suspend_ignore_children(&pdev->dev, true);
1513 pm_runtime_enable(&pdev->dev);
1514
1515 ret = soc_camera_host_register(&priv->ici);
1516 if (ret)
1517 goto cleanup;
1518
1519 return 0;
1520
1521cleanup:
1522 pm_runtime_disable(&pdev->dev);
1523 vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
1524
1525 return ret;
1526}
1527
1528static int rcar_vin_remove(struct platform_device *pdev)
1529{
1530 struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
1531 struct rcar_vin_priv *priv = container_of(soc_host,
1532 struct rcar_vin_priv, ici);
1533
1534 soc_camera_host_unregister(soc_host);
1535 pm_runtime_disable(&pdev->dev);
1536 vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
1537
1538 return 0;
1539}
1540
1541static struct platform_driver rcar_vin_driver = {
1542 .probe = rcar_vin_probe,
1543 .remove = rcar_vin_remove,
1544 .driver = {
1545 .name = DRV_NAME,
1546 .owner = THIS_MODULE,
47c71bd6 1547 .of_match_table = of_match_ptr(rcar_vin_of_table),
73135e96
VB		 1548 },
1549 .id_table = rcar_vin_id_table,
1550};
1551
1552module_platform_driver(rcar_vin_driver);
1553
1554MODULE_LICENSE("GPL");
1555MODULE_ALIAS("platform:rcar_vin");
1556MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver");
Linux 6.x block layer and io_uring tree(s)