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[media] v4l2-ioctl: don't print the clips list
[deliverable/linux.git] / drivers / media / platform / sh_veu.c
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05efa71b
GL		 1/*
2 * sh-mobile VEU mem2mem driver
3 *
4 * Copyright (C) 2012 Renesas Electronics Corporation
5 * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
6 * Copyright (C) 2008 Magnus Damm
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the version 2 of the GNU General Public License as
10 * published by the Free Software Foundation
11 */
12
f2b4dc1a 13#include <linux/err.h>
05efa71b
GL		 14#include <linux/fs.h>
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/interrupt.h>
18#include <linux/io.h>
19#include <linux/platform_device.h>
20#include <linux/pm_runtime.h>
21#include <linux/slab.h>
22#include <linux/types.h>
23#include <linux/videodev2.h>
24
25#include <media/v4l2-dev.h>
26#include <media/v4l2-device.h>
27#include <media/v4l2-ioctl.h>
28#include <media/v4l2-mem2mem.h>
29#include <media/videobuf2-dma-contig.h>
30
31#define VEU_STR 0x00 /* start register */
32#define VEU_SWR 0x10 /* src: line length */
33#define VEU_SSR 0x14 /* src: image size */
34#define VEU_SAYR 0x18 /* src: y/rgb plane address */
35#define VEU_SACR 0x1c /* src: c plane address */
36#define VEU_BSSR 0x20 /* bundle mode register */
37#define VEU_EDWR 0x30 /* dst: line length */
38#define VEU_DAYR 0x34 /* dst: y/rgb plane address */
39#define VEU_DACR 0x38 /* dst: c plane address */
40#define VEU_TRCR 0x50 /* transform control */
41#define VEU_RFCR 0x54 /* resize scale */
42#define VEU_RFSR 0x58 /* resize clip */
43#define VEU_ENHR 0x5c /* enhance */
44#define VEU_FMCR 0x70 /* filter mode */
45#define VEU_VTCR 0x74 /* lowpass vertical */
46#define VEU_HTCR 0x78 /* lowpass horizontal */
47#define VEU_APCR 0x80 /* color match */
48#define VEU_ECCR 0x84 /* color replace */
49#define VEU_AFXR 0x90 /* fixed mode */
50#define VEU_SWPR 0x94 /* swap */
51#define VEU_EIER 0xa0 /* interrupt mask */
52#define VEU_EVTR 0xa4 /* interrupt event */
53#define VEU_STAR 0xb0 /* status */
54#define VEU_BSRR 0xb4 /* reset */
55
56#define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */
57#define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */
58#define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */
59#define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */
60#define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */
61#define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */
62#define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */
63#define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */
64#define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */
65#define VEU_COFFR 0x224 /* color conversion offset */
66#define VEU_CBR 0x228 /* color conversion clip */
67
68/*
69 * 4092x4092 max size is the normal case. In some cases it can be reduced to
70 * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188.
71 */
72#define MAX_W 4092
73#define MAX_H 4092
74#define MIN_W 8
75#define MIN_H 8
76#define ALIGN_W 4
77
78/* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */
79#define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024)
80
81#define MEM2MEM_DEF_TRANSLEN 1
82
83struct sh_veu_dev;
84
85struct sh_veu_file {
86 struct sh_veu_dev *veu_dev;
87 bool cfg_needed;
88};
89
90struct sh_veu_format {
91 char *name;
92 u32 fourcc;
93 unsigned int depth;
94 unsigned int ydepth;
95};
96
97/* video data format */
98struct sh_veu_vfmt {
99 /* Replace with v4l2_rect */
100 struct v4l2_rect frame;
101 unsigned int bytesperline;
102 unsigned int offset_y;
103 unsigned int offset_c;
104 const struct sh_veu_format *fmt;
105};
106
107struct sh_veu_dev {
108 struct v4l2_device v4l2_dev;
109 struct video_device vdev;
110 struct v4l2_m2m_dev *m2m_dev;
111 struct device *dev;
112 struct v4l2_m2m_ctx *m2m_ctx;
113 struct sh_veu_vfmt vfmt_out;
114 struct sh_veu_vfmt vfmt_in;
115 /* Only single user per direction so far */
116 struct sh_veu_file *capture;
117 struct sh_veu_file *output;
118 struct mutex fop_lock;
119 void __iomem *base;
120 struct vb2_alloc_ctx *alloc_ctx;
121 spinlock_t lock;
122 bool is_2h;
123 unsigned int xaction;
124 bool aborting;
125};
126
127enum sh_veu_fmt_idx {
128 SH_VEU_FMT_NV12,
129 SH_VEU_FMT_NV16,
130 SH_VEU_FMT_NV24,
131 SH_VEU_FMT_RGB332,
132 SH_VEU_FMT_RGB444,
133 SH_VEU_FMT_RGB565,
134 SH_VEU_FMT_RGB666,
135 SH_VEU_FMT_RGB24,
136};
137
138#define VGA_WIDTH 640
139#define VGA_HEIGHT 480
140
141#define DEFAULT_IN_WIDTH VGA_WIDTH
142#define DEFAULT_IN_HEIGHT VGA_HEIGHT
143#define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12
144#define DEFAULT_OUT_WIDTH VGA_WIDTH
145#define DEFAULT_OUT_HEIGHT VGA_HEIGHT
146#define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565
147
148/*
149 * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte
150 * aligned for NV24.
151 */
152static const struct sh_veu_format sh_veu_fmt[] = {
153 [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .name = "NV12", .fourcc = V4L2_PIX_FMT_NV12 },
154 [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .name = "NV16", .fourcc = V4L2_PIX_FMT_NV16 },
155 [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .name = "NV24", .fourcc = V4L2_PIX_FMT_NV24 },
156 [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .name = "RGB332", .fourcc = V4L2_PIX_FMT_RGB332 },
157 [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .name = "RGB444", .fourcc = V4L2_PIX_FMT_RGB444 },
158 [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .name = "RGB565", .fourcc = V4L2_PIX_FMT_RGB565 },
159 [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .name = "BGR666", .fourcc = V4L2_PIX_FMT_BGR666 },
160 [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .name = "RGB24", .fourcc = V4L2_PIX_FMT_RGB24 },
161};
162
163#define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \
164 .frame = { \
165 .width = VGA_WIDTH, \
166 .height = VGA_HEIGHT, \
167 }, \
168 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \
169 .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \
170}
171
172#define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \
173 .frame = { \
174 .width = VGA_WIDTH, \
175 .height = VGA_HEIGHT, \
176 }, \
177 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \
178 .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \
179}
180
181/*
182 * TODO: add support for further output formats:
183 * SH_VEU_FMT_NV12,
184 * SH_VEU_FMT_NV16,
185 * SH_VEU_FMT_NV24,
186 * SH_VEU_FMT_RGB332,
187 * SH_VEU_FMT_RGB444,
188 * SH_VEU_FMT_RGB666,
189 * SH_VEU_FMT_RGB24,
190 */
191
192static const int sh_veu_fmt_out[] = {
193 SH_VEU_FMT_RGB565,
194};
195
196/*
197 * TODO: add support for further input formats:
198 * SH_VEU_FMT_NV16,
199 * SH_VEU_FMT_NV24,
200 * SH_VEU_FMT_RGB565,
201 * SH_VEU_FMT_RGB666,
202 * SH_VEU_FMT_RGB24,
203 */
204static const int sh_veu_fmt_in[] = {
205 SH_VEU_FMT_NV12,
206};
207
208static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc)
209{
210 switch (fourcc) {
211 default:
212 BUG();
213 case V4L2_PIX_FMT_NV12:
214 case V4L2_PIX_FMT_NV16:
215 case V4L2_PIX_FMT_NV24:
216 return V4L2_COLORSPACE_JPEG;
217 case V4L2_PIX_FMT_RGB332:
218 case V4L2_PIX_FMT_RGB444:
219 case V4L2_PIX_FMT_RGB565:
220 case V4L2_PIX_FMT_BGR666:
221 case V4L2_PIX_FMT_RGB24:
222 return V4L2_COLORSPACE_SRGB;
223 }
224}
225
226static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg)
227{
228 return ioread32(veu->base + reg);
229}
230
231static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg,
232 u32 value)
233{
234 iowrite32(value, veu->base + reg);
235}
236
237 /* ========== mem2mem callbacks ========== */
238
239static void sh_veu_job_abort(void *priv)
240{
241 struct sh_veu_dev *veu = priv;
242
243 /* Will cancel the transaction in the next interrupt handler */
244 veu->aborting = true;
245}
246
247static void sh_veu_lock(void *priv)
248{
249 struct sh_veu_dev *veu = priv;
250
251 mutex_lock(&veu->fop_lock);
252}
253
254static void sh_veu_unlock(void *priv)
255{
256 struct sh_veu_dev *veu = priv;
257
258 mutex_unlock(&veu->fop_lock);
259}
260
261static void sh_veu_process(struct sh_veu_dev *veu,
262 struct vb2_buffer *src_buf,
263 struct vb2_buffer *dst_buf)
264{
265 dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
266
267 sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y);
268 sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ?
269 addr + veu->vfmt_out.offset_c : 0);
59dad49e
MCC		 270 dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__,
271 (unsigned long)addr,
272 veu->vfmt_out.offset_y, veu->vfmt_out.offset_c);
05efa71b
GL		 273
274 addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
275 sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y);
276 sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ?
277 addr + veu->vfmt_in.offset_c : 0);
59dad49e
MCC		 278 dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__,
279 (unsigned long)addr,
280 veu->vfmt_in.offset_y, veu->vfmt_in.offset_c);
05efa71b
GL		 281
282 sh_veu_reg_write(veu, VEU_STR, 1);
283
284 sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */
285}
286
287/**
288 * sh_veu_device_run() - prepares and starts the device
289 *
290 * This will be called by the framework when it decides to schedule a particular
291 * instance.
292 */
293static void sh_veu_device_run(void *priv)
294{
295 struct sh_veu_dev *veu = priv;
296 struct vb2_buffer *src_buf, *dst_buf;
297
298 src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
299 dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
300
301 if (src_buf && dst_buf)
302 sh_veu_process(veu, src_buf, dst_buf);
303}
304
305 /* ========== video ioctls ========== */
306
307static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
308 enum v4l2_buf_type type)
309{
310 return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
311 veu_file == veu->capture) ||
312 (type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
313 veu_file == veu->output);
314}
315
316static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
317 struct vb2_queue *dst_vq);
318
319/*
320 * It is not unusual to have video nodes open()ed multiple times. While some
321 * V4L2 operations are non-intrusive, like querying formats and various
322 * parameters, others, like setting formats, starting and stopping streaming,
323 * queuing and dequeuing buffers, directly affect hardware configuration and /
324 * or execution. This function verifies availability of the requested interface
325 * and, if available, reserves it for the requesting user.
326 */
327static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
328 enum v4l2_buf_type type)
329{
330 struct sh_veu_file **stream;
331
332 switch (type) {
333 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
334 stream = &veu->capture;
335 break;
336 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
337 stream = &veu->output;
338 break;
339 default:
340 return -EINVAL;
341 }
342
343 if (*stream == veu_file)
344 return 0;
345
346 if (*stream)
347 return -EBUSY;
348
349 *stream = veu_file;
350
351 return 0;
352}
353
354static int sh_veu_context_init(struct sh_veu_dev *veu)
355{
356 if (veu->m2m_ctx)
357 return 0;
358
359 veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu,
360 sh_veu_queue_init);
361
362 if (IS_ERR(veu->m2m_ctx))
363 return PTR_ERR(veu->m2m_ctx);
364
365 return 0;
366}
367
368static int sh_veu_querycap(struct file *file, void *priv,
369 struct v4l2_capability *cap)
370{
371 strlcpy(cap->driver, "sh-veu", sizeof(cap->driver));
372 strlcpy(cap->card, "sh-mobile VEU", sizeof(cap->card));
373 strlcpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info));
374 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
375 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
376
377 return 0;
378}
379
380static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num)
381{
382 if (f->index >= fmt_num)
383 return -EINVAL;
384
385 strlcpy(f->description, sh_veu_fmt[fmt[f->index]].name, sizeof(f->description));
386 f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc;
387 return 0;
388}
389
390static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv,
391 struct v4l2_fmtdesc *f)
392{
393 return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out));
394}
395
396static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv,
397 struct v4l2_fmtdesc *f)
398{
399 return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in));
400}
401
402static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu,
403 enum v4l2_buf_type type)
404{
405 switch (type) {
406 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
407 return &veu->vfmt_out;
408 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
409 return &veu->vfmt_in;
410 default:
411 return NULL;
412 }
413}
414
415static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
416{
417 struct v4l2_pix_format *pix = &f->fmt.pix;
418 struct sh_veu_dev *veu = veu_file->veu_dev;
419 struct sh_veu_vfmt *vfmt;
420
421 vfmt = sh_veu_get_vfmt(veu, f->type);
422
423 pix->width = vfmt->frame.width;
424 pix->height = vfmt->frame.height;
425 pix->field = V4L2_FIELD_NONE;
426 pix->pixelformat = vfmt->fmt->fourcc;
427 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
428 pix->bytesperline = vfmt->bytesperline;
429 pix->sizeimage = vfmt->bytesperline * pix->height *
430 vfmt->fmt->depth / vfmt->fmt->ydepth;
431 pix->priv = 0;
432 dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__,
433 f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat);
434
435 return 0;
436}
437
438static int sh_veu_g_fmt_vid_out(struct file *file, void *priv,
439 struct v4l2_format *f)
440{
441 return sh_veu_g_fmt(priv, f);
442}
443
444static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv,
445 struct v4l2_format *f)
446{
447 return sh_veu_g_fmt(priv, f);
448}
449
450static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt)
451{
452 struct v4l2_pix_format *pix = &f->fmt.pix;
453 unsigned int y_bytes_used;
454
455 /*
456 * V4L2 specification suggests, that the driver should correct the
457 * format struct if any of the dimensions is unsupported
458 */
459 switch (pix->field) {
460 default:
461 case V4L2_FIELD_ANY:
462 pix->field = V4L2_FIELD_NONE;
463 /* fall through: continue handling V4L2_FIELD_NONE */
464 case V4L2_FIELD_NONE:
465 break;
466 }
467
468 v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W,
469 &pix->height, MIN_H, MAX_H, 0, 0);
470
471 y_bytes_used = (pix->width * fmt->ydepth) >> 3;
472
473 if (pix->bytesperline < y_bytes_used)
474 pix->bytesperline = y_bytes_used;
475 pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth;
476
477 pix->pixelformat = fmt->fourcc;
478 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
479 pix->priv = 0;
480
481 pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage);
482
483 return 0;
484}
485
486static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f)
487{
488 const int *fmt;
489 int i, n, dflt;
490
491 pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field);
492
493 switch (f->type) {
494 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
495 fmt = sh_veu_fmt_out;
496 n = ARRAY_SIZE(sh_veu_fmt_out);
497 dflt = DEFAULT_OUT_FMTIDX;
498 break;
499 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
500 default:
501 fmt = sh_veu_fmt_in;
502 n = ARRAY_SIZE(sh_veu_fmt_in);
503 dflt = DEFAULT_IN_FMTIDX;
504 break;
505 }
506
507 for (i = 0; i < n; i++)
508 if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat)
509 return &sh_veu_fmt[fmt[i]];
510
511 return &sh_veu_fmt[dflt];
512}
513
514static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv,
515 struct v4l2_format *f)
516{
517 const struct sh_veu_format *fmt;
518
519 fmt = sh_veu_find_fmt(f);
520 if (!fmt)
521 /* wrong buffer type */
522 return -EINVAL;
523
524 return sh_veu_try_fmt(f, fmt);
525}
526
527static int sh_veu_try_fmt_vid_out(struct file *file, void *priv,
528 struct v4l2_format *f)
529{
530 const struct sh_veu_format *fmt;
531
532 fmt = sh_veu_find_fmt(f);
533 if (!fmt)
534 /* wrong buffer type */
535 return -EINVAL;
536
537 return sh_veu_try_fmt(f, fmt);
538}
539
540static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt)
541{
542 /* dst_left and dst_top validity will be verified in CROP / COMPOSE */
543 unsigned int left = vfmt->frame.left & ~0x03;
544 unsigned int top = vfmt->frame.top;
545 dma_addr_t offset = ((left * veu->vfmt_out.fmt->depth) >> 3) +
546 top * veu->vfmt_out.bytesperline;
547 unsigned int y_line;
548
549 vfmt->offset_y = offset;
550
551 switch (vfmt->fmt->fourcc) {
552 case V4L2_PIX_FMT_NV12:
553 case V4L2_PIX_FMT_NV16:
554 case V4L2_PIX_FMT_NV24:
555 y_line = ALIGN(vfmt->frame.width, 16);
556 vfmt->offset_c = offset + y_line * vfmt->frame.height;
557 break;
558 case V4L2_PIX_FMT_RGB332:
559 case V4L2_PIX_FMT_RGB444:
560 case V4L2_PIX_FMT_RGB565:
561 case V4L2_PIX_FMT_BGR666:
562 case V4L2_PIX_FMT_RGB24:
563 vfmt->offset_c = 0;
564 break;
565 default:
566 BUG();
567 }
568}
569
570static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
571{
572 struct v4l2_pix_format *pix = &f->fmt.pix;
573 struct sh_veu_dev *veu = veu_file->veu_dev;
574 struct sh_veu_vfmt *vfmt;
575 struct vb2_queue *vq;
576 int ret = sh_veu_context_init(veu);
577 if (ret < 0)
578 return ret;
579
580 vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type);
581 if (!vq)
582 return -EINVAL;
583
584 if (vb2_is_busy(vq)) {
585 v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__);
586 return -EBUSY;
587 }
588
589 vfmt = sh_veu_get_vfmt(veu, f->type);
590 /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */
591
592 vfmt->fmt = sh_veu_find_fmt(f);
593 /* vfmt->fmt != NULL following the same argument as above */
594 vfmt->frame.width = pix->width;
595 vfmt->frame.height = pix->height;
596 vfmt->bytesperline = pix->bytesperline;
597
598 sh_veu_colour_offset(veu, vfmt);
599
600 /*
601 * We could also verify and require configuration only if any parameters
602 * actually have changed, but it is unlikely, that the user requests the
603 * same configuration several times without closing the device.
604 */
605 veu_file->cfg_needed = true;
606
607 dev_dbg(veu->dev,
608 "Setting format for type %d, wxh: %dx%d, fmt: %x\n",
609 f->type, pix->width, pix->height, vfmt->fmt->fourcc);
610
611 return 0;
612}
613
614static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv,
615 struct v4l2_format *f)
616{
617 int ret = sh_veu_try_fmt_vid_cap(file, priv, f);
618 if (ret)
619 return ret;
620
621 return sh_veu_s_fmt(priv, f);
622}
623
624static int sh_veu_s_fmt_vid_out(struct file *file, void *priv,
625 struct v4l2_format *f)
626{
627 int ret = sh_veu_try_fmt_vid_out(file, priv, f);
628 if (ret)
629 return ret;
630
631 return sh_veu_s_fmt(priv, f);
632}
633
634static int sh_veu_reqbufs(struct file *file, void *priv,
635 struct v4l2_requestbuffers *reqbufs)
636{
637 struct sh_veu_file *veu_file = priv;
638 struct sh_veu_dev *veu = veu_file->veu_dev;
639 int ret = sh_veu_context_init(veu);
640 if (ret < 0)
641 return ret;
642
643 ret = sh_veu_stream_init(veu, veu_file, reqbufs->type);
644 if (ret < 0)
645 return ret;
646
647 return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs);
648}
649
650static int sh_veu_querybuf(struct file *file, void *priv,
651 struct v4l2_buffer *buf)
652{
653 struct sh_veu_file *veu_file = priv;
654
655 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
656 return -EBUSY;
657
658 return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf);
659}
660
661static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
662{
663 struct sh_veu_file *veu_file = priv;
664
665 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
666 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
667 return -EBUSY;
668
669 return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf);
670}
671
672static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
673{
674 struct sh_veu_file *veu_file = priv;
675
676 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
677 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
678 return -EBUSY;
679
680 return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf);
681}
682
683static void sh_veu_calc_scale(struct sh_veu_dev *veu,
684 int size_in, int size_out, int crop_out,
685 u32 *mant, u32 *frac, u32 *rep)
686{
687 u32 fixpoint;
688
689 /* calculate FRAC and MANT */
690 *rep = *mant = *frac = 0;
691
692 if (size_in == size_out) {
693 if (crop_out != size_out)
694 *mant = 1; /* needed for cropping */
695 return;
696 }
697
698 /* VEU2H special upscale */
699 if (veu->is_2h && size_out > size_in) {
700 u32 fixpoint = (4096 * size_in) / size_out;
701 *mant = fixpoint / 4096;
702 *frac = (fixpoint - (*mant * 4096)) & ~0x07;
703
704 switch (*frac) {
705 case 0x800:
706 *rep = 1;
707 break;
708 case 0x400:
709 *rep = 3;
710 break;
711 case 0x200:
712 *rep = 7;
713 break;
714 }
715 if (*rep)
716 return;
717 }
718
719 fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
720 *mant = fixpoint / 4096;
721 *frac = fixpoint - (*mant * 4096);
722
723 if (*frac & 0x07) {
724 /*
725 * FIXME: do we really have to round down twice in the
726 * up-scaling case?
727 */
728 *frac &= ~0x07;
729 if (size_out > size_in)
730 *frac -= 8; /* round down if scaling up */
731 else
732 *frac += 8; /* round up if scaling down */
733 }
734}
735
736static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu,
737 int size_in, int size_out, int crop_out)
738{
739 u32 mant, frac, value, rep;
740
741 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
742
743 /* set scale */
744 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) |
745 (((mant << 12) | frac) << 16);
746
747 sh_veu_reg_write(veu, VEU_RFCR, value);
748
749 /* set clip */
750 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) |
751 (((rep << 12) | crop_out) << 16);
752
753 sh_veu_reg_write(veu, VEU_RFSR, value);
754
755 return ALIGN((size_in * crop_out) / size_out, 4);
756}
757
758static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu,
759 int size_in, int size_out, int crop_out)
760{
761 u32 mant, frac, value, rep;
762
763 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
764
765 /* set scale */
766 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) |
767 (mant << 12) | frac;
768
769 sh_veu_reg_write(veu, VEU_RFCR, value);
770
771 /* set clip */
772 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) |
773 (rep << 12) | crop_out;
774
775 sh_veu_reg_write(veu, VEU_RFSR, value);
776
777 return ALIGN((size_in * crop_out) / size_out, 4);
778}
779
780static void sh_veu_configure(struct sh_veu_dev *veu)
781{
782 u32 src_width, src_stride, src_height;
783 u32 dst_width, dst_stride, dst_height;
784 u32 real_w, real_h;
785
786 /* reset VEU */
787 sh_veu_reg_write(veu, VEU_BSRR, 0x100);
788
789 src_width = veu->vfmt_in.frame.width;
790 src_height = veu->vfmt_in.frame.height;
791 src_stride = ALIGN(veu->vfmt_in.frame.width, 16);
792
793 dst_width = real_w = veu->vfmt_out.frame.width;
794 dst_height = real_h = veu->vfmt_out.frame.height;
795 /* Datasheet is unclear - whether it's always number of bytes or not */
796 dst_stride = veu->vfmt_out.bytesperline;
797
798 /*
799 * So far real_w == dst_width && real_h == dst_height, but it wasn't
800 * necessarily the case in the original vidix driver, so, it may change
801 * here in the future too.
802 */
803 src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width);
804 src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height);
805
806 sh_veu_reg_write(veu, VEU_SWR, src_stride);
807 sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16));
808 sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */
809
810 sh_veu_reg_write(veu, VEU_EDWR, dst_stride);
811 sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */
812
813 sh_veu_reg_write(veu, VEU_SWPR, 0x67);
814 sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4);
815
816 if (veu->is_2h) {
817 sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5);
818 sh_veu_reg_write(veu, VEU_MCR01, 0x0950);
819 sh_veu_reg_write(veu, VEU_MCR02, 0x0000);
820
821 sh_veu_reg_write(veu, VEU_MCR10, 0x397f);
822 sh_veu_reg_write(veu, VEU_MCR11, 0x0950);
823 sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd);
824
825 sh_veu_reg_write(veu, VEU_MCR20, 0x0000);
826 sh_veu_reg_write(veu, VEU_MCR21, 0x0950);
827 sh_veu_reg_write(veu, VEU_MCR22, 0x1023);
828
829 sh_veu_reg_write(veu, VEU_COFFR, 0x00800010);
830 }
831}
832
833static int sh_veu_streamon(struct file *file, void *priv,
834 enum v4l2_buf_type type)
835{
836 struct sh_veu_file *veu_file = priv;
837
838 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
839 return -EBUSY;
840
841 if (veu_file->cfg_needed) {
842 struct sh_veu_dev *veu = veu_file->veu_dev;
843 veu_file->cfg_needed = false;
844 sh_veu_configure(veu_file->veu_dev);
845 veu->xaction = 0;
846 veu->aborting = false;
847 }
848
849 return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type);
850}
851
852static int sh_veu_streamoff(struct file *file, void *priv,
853 enum v4l2_buf_type type)
854{
855 struct sh_veu_file *veu_file = priv;
856
857 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
858 return -EBUSY;
859
860 return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type);
861}
862
863static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = {
864 .vidioc_querycap = sh_veu_querycap,
865
866 .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap,
867 .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap,
868 .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap,
869 .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap,
870
871 .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out,
872 .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out,
873 .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out,
874 .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out,
875
876 .vidioc_reqbufs = sh_veu_reqbufs,
877 .vidioc_querybuf = sh_veu_querybuf,
878
879 .vidioc_qbuf = sh_veu_qbuf,
880 .vidioc_dqbuf = sh_veu_dqbuf,
881
882 .vidioc_streamon = sh_veu_streamon,
883 .vidioc_streamoff = sh_veu_streamoff,
884};
885
886 /* ========== Queue operations ========== */
887
888static int sh_veu_queue_setup(struct vb2_queue *vq,
889 const struct v4l2_format *f,
890 unsigned int *nbuffers, unsigned int *nplanes,
891 unsigned int sizes[], void *alloc_ctxs[])
892{
893 struct sh_veu_dev *veu = vb2_get_drv_priv(vq);
894 struct sh_veu_vfmt *vfmt;
895 unsigned int size, count = *nbuffers;
896
897 if (f) {
898 const struct v4l2_pix_format *pix = &f->fmt.pix;
899 const struct sh_veu_format *fmt = sh_veu_find_fmt(f);
900 struct v4l2_format ftmp = *f;
901
902 if (fmt->fourcc != pix->pixelformat)
903 return -EINVAL;
904 sh_veu_try_fmt(&ftmp, fmt);
905 if (ftmp.fmt.pix.width != pix->width ||
906 ftmp.fmt.pix.height != pix->height)
907 return -EINVAL;
908 size = pix->bytesperline ? pix->bytesperline * pix->height :
909 pix->width * pix->height * fmt->depth >> 3;
910 } else {
911 vfmt = sh_veu_get_vfmt(veu, vq->type);
912 size = vfmt->bytesperline * vfmt->frame.height;
913 }
914
915 if (count < 2)
916 *nbuffers = count = 2;
917
918 if (size * count > VIDEO_MEM_LIMIT) {
919 count = VIDEO_MEM_LIMIT / size;
920 *nbuffers = count;
921 }
922
923 *nplanes = 1;
924 sizes[0] = size;
925 alloc_ctxs[0] = veu->alloc_ctx;
926
927 dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size);
928
929 return 0;
930}
931
932static int sh_veu_buf_prepare(struct vb2_buffer *vb)
933{
934 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
935 struct sh_veu_vfmt *vfmt;
936 unsigned int sizeimage;
937
938 vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type);
939 sizeimage = vfmt->bytesperline * vfmt->frame.height *
940 vfmt->fmt->depth / vfmt->fmt->ydepth;
941
942 if (vb2_plane_size(vb, 0) < sizeimage) {
943 dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n",
944 __func__, vb2_plane_size(vb, 0), sizeimage);
945 return -EINVAL;
946 }
947
948 vb2_set_plane_payload(vb, 0, sizeimage);
949
950 return 0;
951}
952
953static void sh_veu_buf_queue(struct vb2_buffer *vb)
954{
955 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
956 dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->v4l2_buf.type);
957 v4l2_m2m_buf_queue(veu->m2m_ctx, vb);
958}
959
960static void sh_veu_wait_prepare(struct vb2_queue *q)
961{
962 sh_veu_unlock(vb2_get_drv_priv(q));
963}
964
965static void sh_veu_wait_finish(struct vb2_queue *q)
966{
967 sh_veu_lock(vb2_get_drv_priv(q));
968}
969
970static const struct vb2_ops sh_veu_qops = {
971 .queue_setup = sh_veu_queue_setup,
972 .buf_prepare = sh_veu_buf_prepare,
973 .buf_queue = sh_veu_buf_queue,
974 .wait_prepare = sh_veu_wait_prepare,
975 .wait_finish = sh_veu_wait_finish,
976};
977
978static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
979 struct vb2_queue *dst_vq)
980{
981 int ret;
982
983 memset(src_vq, 0, sizeof(*src_vq));
984 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
985 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
986 src_vq->drv_priv = priv;
987 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
988 src_vq->ops = &sh_veu_qops;
989 src_vq->mem_ops = &vb2_dma_contig_memops;
990
991 ret = vb2_queue_init(src_vq);
992 if (ret < 0)
993 return ret;
994
995 memset(dst_vq, 0, sizeof(*dst_vq));
996 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
997 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
998 dst_vq->drv_priv = priv;
999 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1000 dst_vq->ops = &sh_veu_qops;
1001 dst_vq->mem_ops = &vb2_dma_contig_memops;
1002
1003 return vb2_queue_init(dst_vq);
1004}
1005
1006 /* ========== File operations ========== */
1007
1008static int sh_veu_open(struct file *file)
1009{
1010 struct sh_veu_dev *veu = video_drvdata(file);
1011 struct sh_veu_file *veu_file;
1012
1013 veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL);
1014 if (!veu_file)
1015 return -ENOMEM;
1016
1017 veu_file->veu_dev = veu;
1018 veu_file->cfg_needed = true;
1019
1020 file->private_data = veu_file;
1021
1022 pm_runtime_get_sync(veu->dev);
1023
1024 dev_dbg(veu->dev, "Created instance %p\n", veu_file);
1025
1026 return 0;
1027}
1028
1029static int sh_veu_release(struct file *file)
1030{
1031 struct sh_veu_dev *veu = video_drvdata(file);
1032 struct sh_veu_file *veu_file = file->private_data;
1033
1034 dev_dbg(veu->dev, "Releasing instance %p\n", veu_file);
1035
1036 pm_runtime_put(veu->dev);
1037
1038 if (veu_file == veu->capture) {
1039 veu->capture = NULL;
1040 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE));
1041 }
1042
1043 if (veu_file == veu->output) {
1044 veu->output = NULL;
1045 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT));
1046 }
1047
1048 if (!veu->output && !veu->capture && veu->m2m_ctx) {
1049 v4l2_m2m_ctx_release(veu->m2m_ctx);
1050 veu->m2m_ctx = NULL;
1051 }
1052
1053 kfree(veu_file);
1054
1055 return 0;
1056}
1057
1058static unsigned int sh_veu_poll(struct file *file,
1059 struct poll_table_struct *wait)
1060{
1061 struct sh_veu_file *veu_file = file->private_data;
1062
1063 return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait);
1064}
1065
1066static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma)
1067{
1068 struct sh_veu_file *veu_file = file->private_data;
1069
1070 return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma);
1071}
1072
1073static const struct v4l2_file_operations sh_veu_fops = {
1074 .owner = THIS_MODULE,
1075 .open = sh_veu_open,
1076 .release = sh_veu_release,
1077 .poll = sh_veu_poll,
1078 .unlocked_ioctl = video_ioctl2,
1079 .mmap = sh_veu_mmap,
1080};
1081
1082static const struct video_device sh_veu_videodev = {
1083 .name = "sh-veu",
1084 .fops = &sh_veu_fops,
1085 .ioctl_ops = &sh_veu_ioctl_ops,
1086 .minor = -1,
1087 .release = video_device_release_empty,
1088 .vfl_dir = VFL_DIR_M2M,
1089};
1090
1091static const struct v4l2_m2m_ops sh_veu_m2m_ops = {
1092 .device_run = sh_veu_device_run,
1093 .job_abort = sh_veu_job_abort,
1094};
1095
1096static irqreturn_t sh_veu_bh(int irq, void *dev_id)
1097{
1098 struct sh_veu_dev *veu = dev_id;
1099
1100 if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) {
1101 v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx);
1102 veu->xaction = 0;
1103 } else {
1104 sh_veu_device_run(veu);
1105 }
1106
1107 return IRQ_HANDLED;
1108}
1109
1110static irqreturn_t sh_veu_isr(int irq, void *dev_id)
1111{
1112 struct sh_veu_dev *veu = dev_id;
1113 struct vb2_buffer *dst;
1114 struct vb2_buffer *src;
1115 u32 status = sh_veu_reg_read(veu, VEU_EVTR);
1116
1117 /* bundle read mode not used */
1118 if (!(status & 1))
1119 return IRQ_NONE;
1120
1121 /* disable interrupt in VEU */
1122 sh_veu_reg_write(veu, VEU_EIER, 0);
1123 /* halt operation */
1124 sh_veu_reg_write(veu, VEU_STR, 0);
1125 /* ack int, write 0 to clear bits */
1126 sh_veu_reg_write(veu, VEU_EVTR, status & ~1);
1127
1128 /* conversion completed */
1129 dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx);
1130 src = v4l2_m2m_src_buf_remove(veu->m2m_ctx);
1131 if (!src || !dst)
1132 return IRQ_NONE;
1133
1134 spin_lock(&veu->lock);
1135 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
1136 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
1137 spin_unlock(&veu->lock);
1138
1139 veu->xaction++;
1140
1141 if (!veu->aborting)
1142 return IRQ_WAKE_THREAD;
1143
1144 return IRQ_HANDLED;
1145}
1146
3151d14a 1147static int sh_veu_probe(struct platform_device *pdev)
05efa71b
GL		 1148{
1149 struct sh_veu_dev *veu;
1150 struct resource *reg_res;
1151 struct video_device *vdev;
1152 int irq, ret;
1153
1154 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1155 irq = platform_get_irq(pdev, 0);
1156
1157 if (!reg_res || irq <= 0) {
1158 dev_err(&pdev->dev, "Insufficient VEU platform information.\n");
1159 return -ENODEV;
1160 }
1161
1162 veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL);
1163 if (!veu)
1164 return -ENOMEM;
1165
1166 veu->is_2h = resource_size(reg_res) == 0x22c;
1167
f2b4dc1a
SK		 1168 veu->base = devm_ioremap_resource(&pdev->dev, reg_res);
1169 if (IS_ERR(veu->base))
1170 return PTR_ERR(veu->base);
05efa71b
GL		 1171
1172 ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh,
1173 0, "veu", veu);
1174 if (ret < 0)
1175 return ret;
1176
1177 ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev);
1178 if (ret < 0) {
1179 dev_err(&pdev->dev, "Error registering v4l2 device\n");
1180 return ret;
1181 }
1182
1183 vdev = &veu->vdev;
1184
1185 veu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1186 if (IS_ERR(veu->alloc_ctx)) {
1187 ret = PTR_ERR(veu->alloc_ctx);
1188 goto einitctx;
1189 }
1190
1191 *vdev = sh_veu_videodev;
1192 spin_lock_init(&veu->lock);
1193 mutex_init(&veu->fop_lock);
1194 vdev->lock = &veu->fop_lock;
1195
1196 video_set_drvdata(vdev, veu);
1197
1198 veu->dev = &pdev->dev;
1199 veu->vfmt_out = DEFAULT_OUT_VFMT;
1200 veu->vfmt_in = DEFAULT_IN_VFMT;
1201
1202 veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops);
1203 if (IS_ERR(veu->m2m_dev)) {
1204 ret = PTR_ERR(veu->m2m_dev);
1205 v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret);
1206 goto em2minit;
1207 }
1208
1209 pm_runtime_enable(&pdev->dev);
1210 pm_runtime_resume(&pdev->dev);
1211
1212 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1213 pm_runtime_suspend(&pdev->dev);
1214 if (ret < 0)
1215 goto evidreg;
1216
1217 return ret;
1218
1219evidreg:
1220 pm_runtime_disable(&pdev->dev);
1221 v4l2_m2m_release(veu->m2m_dev);
1222em2minit:
1223 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1224einitctx:
1225 v4l2_device_unregister(&veu->v4l2_dev);
1226 return ret;
1227}
1228
3151d14a 1229static int sh_veu_remove(struct platform_device *pdev)
05efa71b
GL		 1230{
1231 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1232 struct sh_veu_dev *veu = container_of(v4l2_dev,
1233 struct sh_veu_dev, v4l2_dev);
1234
1235 video_unregister_device(&veu->vdev);
1236 pm_runtime_disable(&pdev->dev);
1237 v4l2_m2m_release(veu->m2m_dev);
1238 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1239 v4l2_device_unregister(&veu->v4l2_dev);
1240
1241 return 0;
1242}
1243
1244static struct platform_driver __refdata sh_veu_pdrv = {
3151d14a 1245 .remove = sh_veu_remove,
05efa71b
GL		 1246 .driver = {
1247 .name = "sh_veu",
1248 .owner = THIS_MODULE,
1249 },
1250};
1251
6647b9c0 1252module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe);
05efa71b
GL		 1253
1254MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver");
1255MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>");
1256MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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