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dma-buf: Replace PTR_RET with PTR_ERR_OR_ZERO
[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
5a442b76 362 return PTR_RET(veu->m2m_ctx);
05efa71b
GL		 363}
364
365static int sh_veu_querycap(struct file *file, void *priv,
366 struct v4l2_capability *cap)
367{
368 strlcpy(cap->driver, "sh-veu", sizeof(cap->driver));
369 strlcpy(cap->card, "sh-mobile VEU", sizeof(cap->card));
370 strlcpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info));
371 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
372 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
373
374 return 0;
375}
376
377static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num)
378{
379 if (f->index >= fmt_num)
380 return -EINVAL;
381
382 strlcpy(f->description, sh_veu_fmt[fmt[f->index]].name, sizeof(f->description));
383 f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc;
384 return 0;
385}
386
387static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv,
388 struct v4l2_fmtdesc *f)
389{
390 return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out));
391}
392
393static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv,
394 struct v4l2_fmtdesc *f)
395{
396 return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in));
397}
398
399static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu,
400 enum v4l2_buf_type type)
401{
402 switch (type) {
403 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
404 return &veu->vfmt_out;
405 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
406 return &veu->vfmt_in;
407 default:
408 return NULL;
409 }
410}
411
412static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
413{
414 struct v4l2_pix_format *pix = &f->fmt.pix;
415 struct sh_veu_dev *veu = veu_file->veu_dev;
416 struct sh_veu_vfmt *vfmt;
417
418 vfmt = sh_veu_get_vfmt(veu, f->type);
419
420 pix->width = vfmt->frame.width;
421 pix->height = vfmt->frame.height;
422 pix->field = V4L2_FIELD_NONE;
423 pix->pixelformat = vfmt->fmt->fourcc;
424 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
425 pix->bytesperline = vfmt->bytesperline;
426 pix->sizeimage = vfmt->bytesperline * pix->height *
427 vfmt->fmt->depth / vfmt->fmt->ydepth;
428 pix->priv = 0;
429 dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__,
430 f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat);
431
432 return 0;
433}
434
435static int sh_veu_g_fmt_vid_out(struct file *file, void *priv,
436 struct v4l2_format *f)
437{
438 return sh_veu_g_fmt(priv, f);
439}
440
441static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv,
442 struct v4l2_format *f)
443{
444 return sh_veu_g_fmt(priv, f);
445}
446
447static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt)
448{
449 struct v4l2_pix_format *pix = &f->fmt.pix;
450 unsigned int y_bytes_used;
451
452 /*
453 * V4L2 specification suggests, that the driver should correct the
454 * format struct if any of the dimensions is unsupported
455 */
456 switch (pix->field) {
457 default:
458 case V4L2_FIELD_ANY:
459 pix->field = V4L2_FIELD_NONE;
460 /* fall through: continue handling V4L2_FIELD_NONE */
461 case V4L2_FIELD_NONE:
462 break;
463 }
464
465 v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W,
466 &pix->height, MIN_H, MAX_H, 0, 0);
467
468 y_bytes_used = (pix->width * fmt->ydepth) >> 3;
469
470 if (pix->bytesperline < y_bytes_used)
471 pix->bytesperline = y_bytes_used;
472 pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth;
473
474 pix->pixelformat = fmt->fourcc;
475 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
476 pix->priv = 0;
477
478 pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage);
479
480 return 0;
481}
482
483static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f)
484{
485 const int *fmt;
486 int i, n, dflt;
487
488 pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field);
489
490 switch (f->type) {
491 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
492 fmt = sh_veu_fmt_out;
493 n = ARRAY_SIZE(sh_veu_fmt_out);
494 dflt = DEFAULT_OUT_FMTIDX;
495 break;
496 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
497 default:
498 fmt = sh_veu_fmt_in;
499 n = ARRAY_SIZE(sh_veu_fmt_in);
500 dflt = DEFAULT_IN_FMTIDX;
501 break;
502 }
503
504 for (i = 0; i < n; i++)
505 if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat)
506 return &sh_veu_fmt[fmt[i]];
507
508 return &sh_veu_fmt[dflt];
509}
510
511static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv,
512 struct v4l2_format *f)
513{
514 const struct sh_veu_format *fmt;
515
516 fmt = sh_veu_find_fmt(f);
517 if (!fmt)
518 /* wrong buffer type */
519 return -EINVAL;
520
521 return sh_veu_try_fmt(f, fmt);
522}
523
524static int sh_veu_try_fmt_vid_out(struct file *file, void *priv,
525 struct v4l2_format *f)
526{
527 const struct sh_veu_format *fmt;
528
529 fmt = sh_veu_find_fmt(f);
530 if (!fmt)
531 /* wrong buffer type */
532 return -EINVAL;
533
534 return sh_veu_try_fmt(f, fmt);
535}
536
537static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt)
538{
539 /* dst_left and dst_top validity will be verified in CROP / COMPOSE */
540 unsigned int left = vfmt->frame.left & ~0x03;
541 unsigned int top = vfmt->frame.top;
542 dma_addr_t offset = ((left * veu->vfmt_out.fmt->depth) >> 3) +
543 top * veu->vfmt_out.bytesperline;
544 unsigned int y_line;
545
546 vfmt->offset_y = offset;
547
548 switch (vfmt->fmt->fourcc) {
549 case V4L2_PIX_FMT_NV12:
550 case V4L2_PIX_FMT_NV16:
551 case V4L2_PIX_FMT_NV24:
552 y_line = ALIGN(vfmt->frame.width, 16);
553 vfmt->offset_c = offset + y_line * vfmt->frame.height;
554 break;
555 case V4L2_PIX_FMT_RGB332:
556 case V4L2_PIX_FMT_RGB444:
557 case V4L2_PIX_FMT_RGB565:
558 case V4L2_PIX_FMT_BGR666:
559 case V4L2_PIX_FMT_RGB24:
560 vfmt->offset_c = 0;
561 break;
562 default:
563 BUG();
564 }
565}
566
567static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
568{
569 struct v4l2_pix_format *pix = &f->fmt.pix;
570 struct sh_veu_dev *veu = veu_file->veu_dev;
571 struct sh_veu_vfmt *vfmt;
572 struct vb2_queue *vq;
573 int ret = sh_veu_context_init(veu);
574 if (ret < 0)
575 return ret;
576
577 vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type);
578 if (!vq)
579 return -EINVAL;
580
581 if (vb2_is_busy(vq)) {
582 v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__);
583 return -EBUSY;
584 }
585
586 vfmt = sh_veu_get_vfmt(veu, f->type);
587 /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */
588
589 vfmt->fmt = sh_veu_find_fmt(f);
590 /* vfmt->fmt != NULL following the same argument as above */
591 vfmt->frame.width = pix->width;
592 vfmt->frame.height = pix->height;
593 vfmt->bytesperline = pix->bytesperline;
594
595 sh_veu_colour_offset(veu, vfmt);
596
597 /*
598 * We could also verify and require configuration only if any parameters
599 * actually have changed, but it is unlikely, that the user requests the
600 * same configuration several times without closing the device.
601 */
602 veu_file->cfg_needed = true;
603
604 dev_dbg(veu->dev,
605 "Setting format for type %d, wxh: %dx%d, fmt: %x\n",
606 f->type, pix->width, pix->height, vfmt->fmt->fourcc);
607
608 return 0;
609}
610
611static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv,
612 struct v4l2_format *f)
613{
614 int ret = sh_veu_try_fmt_vid_cap(file, priv, f);
615 if (ret)
616 return ret;
617
618 return sh_veu_s_fmt(priv, f);
619}
620
621static int sh_veu_s_fmt_vid_out(struct file *file, void *priv,
622 struct v4l2_format *f)
623{
624 int ret = sh_veu_try_fmt_vid_out(file, priv, f);
625 if (ret)
626 return ret;
627
628 return sh_veu_s_fmt(priv, f);
629}
630
631static int sh_veu_reqbufs(struct file *file, void *priv,
632 struct v4l2_requestbuffers *reqbufs)
633{
634 struct sh_veu_file *veu_file = priv;
635 struct sh_veu_dev *veu = veu_file->veu_dev;
636 int ret = sh_veu_context_init(veu);
637 if (ret < 0)
638 return ret;
639
640 ret = sh_veu_stream_init(veu, veu_file, reqbufs->type);
641 if (ret < 0)
642 return ret;
643
644 return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs);
645}
646
647static int sh_veu_querybuf(struct file *file, void *priv,
648 struct v4l2_buffer *buf)
649{
650 struct sh_veu_file *veu_file = priv;
651
652 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
653 return -EBUSY;
654
655 return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf);
656}
657
658static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
659{
660 struct sh_veu_file *veu_file = priv;
661
662 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
663 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
664 return -EBUSY;
665
666 return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf);
667}
668
669static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
670{
671 struct sh_veu_file *veu_file = priv;
672
673 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
674 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
675 return -EBUSY;
676
677 return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf);
678}
679
680static void sh_veu_calc_scale(struct sh_veu_dev *veu,
681 int size_in, int size_out, int crop_out,
682 u32 *mant, u32 *frac, u32 *rep)
683{
684 u32 fixpoint;
685
686 /* calculate FRAC and MANT */
687 *rep = *mant = *frac = 0;
688
689 if (size_in == size_out) {
690 if (crop_out != size_out)
691 *mant = 1; /* needed for cropping */
692 return;
693 }
694
695 /* VEU2H special upscale */
696 if (veu->is_2h && size_out > size_in) {
697 u32 fixpoint = (4096 * size_in) / size_out;
698 *mant = fixpoint / 4096;
699 *frac = (fixpoint - (*mant * 4096)) & ~0x07;
700
701 switch (*frac) {
702 case 0x800:
703 *rep = 1;
704 break;
705 case 0x400:
706 *rep = 3;
707 break;
708 case 0x200:
709 *rep = 7;
710 break;
711 }
712 if (*rep)
713 return;
714 }
715
716 fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
717 *mant = fixpoint / 4096;
718 *frac = fixpoint - (*mant * 4096);
719
720 if (*frac & 0x07) {
721 /*
722 * FIXME: do we really have to round down twice in the
723 * up-scaling case?
724 */
725 *frac &= ~0x07;
726 if (size_out > size_in)
727 *frac -= 8; /* round down if scaling up */
728 else
729 *frac += 8; /* round up if scaling down */
730 }
731}
732
733static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu,
734 int size_in, int size_out, int crop_out)
735{
736 u32 mant, frac, value, rep;
737
738 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
739
740 /* set scale */
741 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) |
742 (((mant << 12) | frac) << 16);
743
744 sh_veu_reg_write(veu, VEU_RFCR, value);
745
746 /* set clip */
747 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) |
748 (((rep << 12) | crop_out) << 16);
749
750 sh_veu_reg_write(veu, VEU_RFSR, value);
751
752 return ALIGN((size_in * crop_out) / size_out, 4);
753}
754
755static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu,
756 int size_in, int size_out, int crop_out)
757{
758 u32 mant, frac, value, rep;
759
760 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
761
762 /* set scale */
763 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) |
764 (mant << 12) | frac;
765
766 sh_veu_reg_write(veu, VEU_RFCR, value);
767
768 /* set clip */
769 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) |
770 (rep << 12) | crop_out;
771
772 sh_veu_reg_write(veu, VEU_RFSR, value);
773
774 return ALIGN((size_in * crop_out) / size_out, 4);
775}
776
777static void sh_veu_configure(struct sh_veu_dev *veu)
778{
779 u32 src_width, src_stride, src_height;
780 u32 dst_width, dst_stride, dst_height;
781 u32 real_w, real_h;
782
783 /* reset VEU */
784 sh_veu_reg_write(veu, VEU_BSRR, 0x100);
785
786 src_width = veu->vfmt_in.frame.width;
787 src_height = veu->vfmt_in.frame.height;
788 src_stride = ALIGN(veu->vfmt_in.frame.width, 16);
789
790 dst_width = real_w = veu->vfmt_out.frame.width;
791 dst_height = real_h = veu->vfmt_out.frame.height;
792 /* Datasheet is unclear - whether it's always number of bytes or not */
793 dst_stride = veu->vfmt_out.bytesperline;
794
795 /*
796 * So far real_w == dst_width && real_h == dst_height, but it wasn't
797 * necessarily the case in the original vidix driver, so, it may change
798 * here in the future too.
799 */
800 src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width);
801 src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height);
802
803 sh_veu_reg_write(veu, VEU_SWR, src_stride);
804 sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16));
805 sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */
806
807 sh_veu_reg_write(veu, VEU_EDWR, dst_stride);
808 sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */
809
810 sh_veu_reg_write(veu, VEU_SWPR, 0x67);
811 sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4);
812
813 if (veu->is_2h) {
814 sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5);
815 sh_veu_reg_write(veu, VEU_MCR01, 0x0950);
816 sh_veu_reg_write(veu, VEU_MCR02, 0x0000);
817
818 sh_veu_reg_write(veu, VEU_MCR10, 0x397f);
819 sh_veu_reg_write(veu, VEU_MCR11, 0x0950);
820 sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd);
821
822 sh_veu_reg_write(veu, VEU_MCR20, 0x0000);
823 sh_veu_reg_write(veu, VEU_MCR21, 0x0950);
824 sh_veu_reg_write(veu, VEU_MCR22, 0x1023);
825
826 sh_veu_reg_write(veu, VEU_COFFR, 0x00800010);
827 }
828}
829
830static int sh_veu_streamon(struct file *file, void *priv,
831 enum v4l2_buf_type type)
832{
833 struct sh_veu_file *veu_file = priv;
834
835 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
836 return -EBUSY;
837
838 if (veu_file->cfg_needed) {
839 struct sh_veu_dev *veu = veu_file->veu_dev;
840 veu_file->cfg_needed = false;
841 sh_veu_configure(veu_file->veu_dev);
842 veu->xaction = 0;
843 veu->aborting = false;
844 }
845
846 return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type);
847}
848
849static int sh_veu_streamoff(struct file *file, void *priv,
850 enum v4l2_buf_type type)
851{
852 struct sh_veu_file *veu_file = priv;
853
854 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
855 return -EBUSY;
856
857 return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type);
858}
859
860static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = {
861 .vidioc_querycap = sh_veu_querycap,
862
863 .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap,
864 .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap,
865 .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap,
866 .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap,
867
868 .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out,
869 .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out,
870 .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out,
871 .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out,
872
873 .vidioc_reqbufs = sh_veu_reqbufs,
874 .vidioc_querybuf = sh_veu_querybuf,
875
876 .vidioc_qbuf = sh_veu_qbuf,
877 .vidioc_dqbuf = sh_veu_dqbuf,
878
879 .vidioc_streamon = sh_veu_streamon,
880 .vidioc_streamoff = sh_veu_streamoff,
881};
882
883 /* ========== Queue operations ========== */
884
885static int sh_veu_queue_setup(struct vb2_queue *vq,
886 const struct v4l2_format *f,
887 unsigned int *nbuffers, unsigned int *nplanes,
888 unsigned int sizes[], void *alloc_ctxs[])
889{
890 struct sh_veu_dev *veu = vb2_get_drv_priv(vq);
891 struct sh_veu_vfmt *vfmt;
892 unsigned int size, count = *nbuffers;
893
894 if (f) {
895 const struct v4l2_pix_format *pix = &f->fmt.pix;
896 const struct sh_veu_format *fmt = sh_veu_find_fmt(f);
897 struct v4l2_format ftmp = *f;
898
899 if (fmt->fourcc != pix->pixelformat)
900 return -EINVAL;
901 sh_veu_try_fmt(&ftmp, fmt);
902 if (ftmp.fmt.pix.width != pix->width ||
903 ftmp.fmt.pix.height != pix->height)
904 return -EINVAL;
697a6d23
KM		 905 size = pix->bytesperline ? pix->bytesperline * pix->height * fmt->depth / fmt->ydepth :
906 pix->width * pix->height * fmt->depth / fmt->ydepth;
05efa71b
GL		 907 } else {
908 vfmt = sh_veu_get_vfmt(veu, vq->type);
697a6d23 909 size = vfmt->bytesperline * vfmt->frame.height * vfmt->fmt->depth / vfmt->fmt->ydepth;
05efa71b
GL		 910 }
911
912 if (count < 2)
913 *nbuffers = count = 2;
914
915 if (size * count > VIDEO_MEM_LIMIT) {
916 count = VIDEO_MEM_LIMIT / size;
917 *nbuffers = count;
918 }
919
920 *nplanes = 1;
921 sizes[0] = size;
922 alloc_ctxs[0] = veu->alloc_ctx;
923
924 dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size);
925
926 return 0;
927}
928
929static int sh_veu_buf_prepare(struct vb2_buffer *vb)
930{
931 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
932 struct sh_veu_vfmt *vfmt;
933 unsigned int sizeimage;
934
935 vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type);
936 sizeimage = vfmt->bytesperline * vfmt->frame.height *
937 vfmt->fmt->depth / vfmt->fmt->ydepth;
938
939 if (vb2_plane_size(vb, 0) < sizeimage) {
940 dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n",
941 __func__, vb2_plane_size(vb, 0), sizeimage);
942 return -EINVAL;
943 }
944
945 vb2_set_plane_payload(vb, 0, sizeimage);
946
947 return 0;
948}
949
950static void sh_veu_buf_queue(struct vb2_buffer *vb)
951{
952 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
953 dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->v4l2_buf.type);
954 v4l2_m2m_buf_queue(veu->m2m_ctx, vb);
955}
956
957static void sh_veu_wait_prepare(struct vb2_queue *q)
958{
959 sh_veu_unlock(vb2_get_drv_priv(q));
960}
961
962static void sh_veu_wait_finish(struct vb2_queue *q)
963{
964 sh_veu_lock(vb2_get_drv_priv(q));
965}
966
967static const struct vb2_ops sh_veu_qops = {
968 .queue_setup = sh_veu_queue_setup,
969 .buf_prepare = sh_veu_buf_prepare,
970 .buf_queue = sh_veu_buf_queue,
971 .wait_prepare = sh_veu_wait_prepare,
972 .wait_finish = sh_veu_wait_finish,
973};
974
975static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
976 struct vb2_queue *dst_vq)
977{
978 int ret;
979
980 memset(src_vq, 0, sizeof(*src_vq));
981 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
982 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
983 src_vq->drv_priv = priv;
984 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
985 src_vq->ops = &sh_veu_qops;
986 src_vq->mem_ops = &vb2_dma_contig_memops;
987
988 ret = vb2_queue_init(src_vq);
989 if (ret < 0)
990 return ret;
991
992 memset(dst_vq, 0, sizeof(*dst_vq));
993 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
994 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
995 dst_vq->drv_priv = priv;
996 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
997 dst_vq->ops = &sh_veu_qops;
998 dst_vq->mem_ops = &vb2_dma_contig_memops;
999
1000 return vb2_queue_init(dst_vq);
1001}
1002
1003 /* ========== File operations ========== */
1004
1005static int sh_veu_open(struct file *file)
1006{
1007 struct sh_veu_dev *veu = video_drvdata(file);
1008 struct sh_veu_file *veu_file;
1009
1010 veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL);
1011 if (!veu_file)
1012 return -ENOMEM;
1013
1014 veu_file->veu_dev = veu;
1015 veu_file->cfg_needed = true;
1016
1017 file->private_data = veu_file;
1018
1019 pm_runtime_get_sync(veu->dev);
1020
1021 dev_dbg(veu->dev, "Created instance %p\n", veu_file);
1022
1023 return 0;
1024}
1025
1026static int sh_veu_release(struct file *file)
1027{
1028 struct sh_veu_dev *veu = video_drvdata(file);
1029 struct sh_veu_file *veu_file = file->private_data;
1030
1031 dev_dbg(veu->dev, "Releasing instance %p\n", veu_file);
1032
05efa71b
GL		 1033 if (veu_file == veu->capture) {
1034 veu->capture = NULL;
1035 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE));
1036 }
1037
1038 if (veu_file == veu->output) {
1039 veu->output = NULL;
1040 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT));
1041 }
1042
1043 if (!veu->output && !veu->capture && veu->m2m_ctx) {
1044 v4l2_m2m_ctx_release(veu->m2m_ctx);
1045 veu->m2m_ctx = NULL;
1046 }
1047
6abb3cf2
KM		 1048 pm_runtime_put(veu->dev);
1049
05efa71b
GL		 1050 kfree(veu_file);
1051
1052 return 0;
1053}
1054
1055static unsigned int sh_veu_poll(struct file *file,
1056 struct poll_table_struct *wait)
1057{
1058 struct sh_veu_file *veu_file = file->private_data;
1059
1060 return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait);
1061}
1062
1063static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma)
1064{
1065 struct sh_veu_file *veu_file = file->private_data;
1066
1067 return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma);
1068}
1069
1070static const struct v4l2_file_operations sh_veu_fops = {
1071 .owner = THIS_MODULE,
1072 .open = sh_veu_open,
1073 .release = sh_veu_release,
1074 .poll = sh_veu_poll,
1075 .unlocked_ioctl = video_ioctl2,
1076 .mmap = sh_veu_mmap,
1077};
1078
1079static const struct video_device sh_veu_videodev = {
1080 .name = "sh-veu",
1081 .fops = &sh_veu_fops,
1082 .ioctl_ops = &sh_veu_ioctl_ops,
1083 .minor = -1,
1084 .release = video_device_release_empty,
1085 .vfl_dir = VFL_DIR_M2M,
1086};
1087
1088static const struct v4l2_m2m_ops sh_veu_m2m_ops = {
1089 .device_run = sh_veu_device_run,
1090 .job_abort = sh_veu_job_abort,
1091};
1092
1093static irqreturn_t sh_veu_bh(int irq, void *dev_id)
1094{
1095 struct sh_veu_dev *veu = dev_id;
1096
1097 if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) {
1098 v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx);
1099 veu->xaction = 0;
1100 } else {
1101 sh_veu_device_run(veu);
1102 }
1103
1104 return IRQ_HANDLED;
1105}
1106
1107static irqreturn_t sh_veu_isr(int irq, void *dev_id)
1108{
1109 struct sh_veu_dev *veu = dev_id;
1110 struct vb2_buffer *dst;
1111 struct vb2_buffer *src;
1112 u32 status = sh_veu_reg_read(veu, VEU_EVTR);
1113
1114 /* bundle read mode not used */
1115 if (!(status & 1))
1116 return IRQ_NONE;
1117
1118 /* disable interrupt in VEU */
1119 sh_veu_reg_write(veu, VEU_EIER, 0);
1120 /* halt operation */
1121 sh_veu_reg_write(veu, VEU_STR, 0);
1122 /* ack int, write 0 to clear bits */
1123 sh_veu_reg_write(veu, VEU_EVTR, status & ~1);
1124
1125 /* conversion completed */
1126 dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx);
1127 src = v4l2_m2m_src_buf_remove(veu->m2m_ctx);
1128 if (!src || !dst)
1129 return IRQ_NONE;
1130
1131 spin_lock(&veu->lock);
1132 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
1133 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
1134 spin_unlock(&veu->lock);
1135
1136 veu->xaction++;
1137
9166e1aa 1138 return IRQ_WAKE_THREAD;
05efa71b
GL		 1139}
1140
3151d14a 1141static int sh_veu_probe(struct platform_device *pdev)
05efa71b
GL		 1142{
1143 struct sh_veu_dev *veu;
1144 struct resource *reg_res;
1145 struct video_device *vdev;
1146 int irq, ret;
1147
1148 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1149 irq = platform_get_irq(pdev, 0);
1150
1151 if (!reg_res || irq <= 0) {
1152 dev_err(&pdev->dev, "Insufficient VEU platform information.\n");
1153 return -ENODEV;
1154 }
1155
1156 veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL);
1157 if (!veu)
1158 return -ENOMEM;
1159
1160 veu->is_2h = resource_size(reg_res) == 0x22c;
1161
f2b4dc1a
SK		 1162 veu->base = devm_ioremap_resource(&pdev->dev, reg_res);
1163 if (IS_ERR(veu->base))
1164 return PTR_ERR(veu->base);
05efa71b
GL		 1165
1166 ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh,
1167 0, "veu", veu);
1168 if (ret < 0)
1169 return ret;
1170
1171 ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev);
1172 if (ret < 0) {
1173 dev_err(&pdev->dev, "Error registering v4l2 device\n");
1174 return ret;
1175 }
1176
1177 vdev = &veu->vdev;
1178
1179 veu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1180 if (IS_ERR(veu->alloc_ctx)) {
1181 ret = PTR_ERR(veu->alloc_ctx);
1182 goto einitctx;
1183 }
1184
1185 *vdev = sh_veu_videodev;
1186 spin_lock_init(&veu->lock);
1187 mutex_init(&veu->fop_lock);
1188 vdev->lock = &veu->fop_lock;
1189
1190 video_set_drvdata(vdev, veu);
1191
1192 veu->dev = &pdev->dev;
1193 veu->vfmt_out = DEFAULT_OUT_VFMT;
1194 veu->vfmt_in = DEFAULT_IN_VFMT;
1195
1196 veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops);
1197 if (IS_ERR(veu->m2m_dev)) {
1198 ret = PTR_ERR(veu->m2m_dev);
1199 v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret);
1200 goto em2minit;
1201 }
1202
1203 pm_runtime_enable(&pdev->dev);
1204 pm_runtime_resume(&pdev->dev);
1205
1206 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1207 pm_runtime_suspend(&pdev->dev);
1208 if (ret < 0)
1209 goto evidreg;
1210
1211 return ret;
1212
1213evidreg:
1214 pm_runtime_disable(&pdev->dev);
1215 v4l2_m2m_release(veu->m2m_dev);
1216em2minit:
1217 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1218einitctx:
1219 v4l2_device_unregister(&veu->v4l2_dev);
1220 return ret;
1221}
1222
3151d14a 1223static int sh_veu_remove(struct platform_device *pdev)
05efa71b
GL		 1224{
1225 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1226 struct sh_veu_dev *veu = container_of(v4l2_dev,
1227 struct sh_veu_dev, v4l2_dev);
1228
1229 video_unregister_device(&veu->vdev);
1230 pm_runtime_disable(&pdev->dev);
1231 v4l2_m2m_release(veu->m2m_dev);
1232 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1233 v4l2_device_unregister(&veu->v4l2_dev);
1234
1235 return 0;
1236}
1237
1238static struct platform_driver __refdata sh_veu_pdrv = {
3151d14a 1239 .remove = sh_veu_remove,
05efa71b
GL		 1240 .driver = {
1241 .name = "sh_veu",
1242 .owner = THIS_MODULE,
1243 },
1244};
1245
6647b9c0 1246module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe);
05efa71b
GL		 1247
1248MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver");
1249MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>");
1250MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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