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96d8eab5 PO |
1 | /* |
2 | * A virtual v4l2-mem2mem example device. | |
3 | * | |
4 | * This is a virtual device driver for testing mem-to-mem videobuf framework. | |
5 | * It simulates a device that uses memory buffers for both source and | |
6 | * destination, processes the data and issues an "irq" (simulated by a timer). | |
7 | * The device is capable of multi-instance, multi-buffer-per-transaction | |
8 | * operation (via the mem2mem framework). | |
9 | * | |
10 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | |
95072084 | 11 | * Pawel Osciak, <pawel@osciak.com> |
96d8eab5 PO |
12 | * Marek Szyprowski, <m.szyprowski@samsung.com> |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by the | |
16 | * Free Software Foundation; either version 2 of the | |
17 | * License, or (at your option) any later version | |
18 | */ | |
19 | #include <linux/module.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/fs.h> | |
96d8eab5 PO |
22 | #include <linux/timer.h> |
23 | #include <linux/sched.h> | |
6b46c397 | 24 | #include <linux/slab.h> |
96d8eab5 PO |
25 | |
26 | #include <linux/platform_device.h> | |
27 | #include <media/v4l2-mem2mem.h> | |
28 | #include <media/v4l2-device.h> | |
29 | #include <media/v4l2-ioctl.h> | |
d80ee38c | 30 | #include <media/videobuf2-vmalloc.h> |
96d8eab5 PO |
31 | |
32 | #define MEM2MEM_TEST_MODULE_NAME "mem2mem-testdev" | |
33 | ||
34 | MODULE_DESCRIPTION("Virtual device for mem2mem framework testing"); | |
95072084 | 35 | MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>"); |
96d8eab5 | 36 | MODULE_LICENSE("GPL"); |
1990d50b | 37 | MODULE_VERSION("0.1.1"); |
96d8eab5 PO |
38 | |
39 | #define MIN_W 32 | |
40 | #define MIN_H 32 | |
41 | #define MAX_W 640 | |
42 | #define MAX_H 480 | |
9ce3ce4d | 43 | #define DIM_ALIGN_MASK 7 /* 8-byte alignment for line length */ |
96d8eab5 PO |
44 | |
45 | /* Flags that indicate a format can be used for capture/output */ | |
46 | #define MEM2MEM_CAPTURE (1 << 0) | |
47 | #define MEM2MEM_OUTPUT (1 << 1) | |
48 | ||
49 | #define MEM2MEM_NAME "m2m-testdev" | |
50 | ||
51 | /* Per queue */ | |
52 | #define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME | |
53 | /* In bytes, per queue */ | |
54 | #define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024) | |
55 | ||
56 | /* Default transaction time in msec */ | |
57 | #define MEM2MEM_DEF_TRANSTIME 1000 | |
58 | /* Default number of buffers per transaction */ | |
59 | #define MEM2MEM_DEF_TRANSLEN 1 | |
60 | #define MEM2MEM_COLOR_STEP (0xff >> 4) | |
61 | #define MEM2MEM_NUM_TILES 8 | |
62 | ||
80072871 TM |
63 | /* Flags that indicate processing mode */ |
64 | #define MEM2MEM_HFLIP (1 << 0) | |
65 | #define MEM2MEM_VFLIP (1 << 1) | |
66 | ||
96d8eab5 PO |
67 | #define dprintk(dev, fmt, arg...) \ |
68 | v4l2_dbg(1, 1, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) | |
69 | ||
70 | ||
71 | void m2mtest_dev_release(struct device *dev) | |
72 | {} | |
73 | ||
74 | static struct platform_device m2mtest_pdev = { | |
75 | .name = MEM2MEM_NAME, | |
76 | .dev.release = m2mtest_dev_release, | |
77 | }; | |
78 | ||
79 | struct m2mtest_fmt { | |
80 | char *name; | |
81 | u32 fourcc; | |
82 | int depth; | |
83 | /* Types the format can be used for */ | |
84 | u32 types; | |
85 | }; | |
86 | ||
87 | static struct m2mtest_fmt formats[] = { | |
88 | { | |
89 | .name = "RGB565 (BE)", | |
90 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
91 | .depth = 16, | |
92 | /* Both capture and output format */ | |
93 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
94 | }, | |
95 | { | |
96 | .name = "4:2:2, packed, YUYV", | |
97 | .fourcc = V4L2_PIX_FMT_YUYV, | |
98 | .depth = 16, | |
99 | /* Output-only format */ | |
100 | .types = MEM2MEM_OUTPUT, | |
101 | }, | |
102 | }; | |
103 | ||
104 | /* Per-queue, driver-specific private data */ | |
105 | struct m2mtest_q_data { | |
106 | unsigned int width; | |
107 | unsigned int height; | |
108 | unsigned int sizeimage; | |
109 | struct m2mtest_fmt *fmt; | |
110 | }; | |
111 | ||
112 | enum { | |
113 | V4L2_M2M_SRC = 0, | |
114 | V4L2_M2M_DST = 1, | |
115 | }; | |
116 | ||
96d8eab5 PO |
117 | #define V4L2_CID_TRANS_TIME_MSEC V4L2_CID_PRIVATE_BASE |
118 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_PRIVATE_BASE + 1) | |
119 | ||
120 | static struct v4l2_queryctrl m2mtest_ctrls[] = { | |
121 | { | |
80072871 TM |
122 | .id = V4L2_CID_HFLIP, |
123 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
124 | .name = "Mirror", | |
125 | .minimum = 0, | |
126 | .maximum = 1, | |
127 | .step = 1, | |
128 | .default_value = 0, | |
129 | .flags = 0, | |
130 | }, { | |
131 | .id = V4L2_CID_VFLIP, | |
132 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
133 | .name = "Vertical Mirror", | |
134 | .minimum = 0, | |
135 | .maximum = 1, | |
136 | .step = 1, | |
137 | .default_value = 0, | |
138 | .flags = 0, | |
139 | }, { | |
96d8eab5 PO |
140 | .id = V4L2_CID_TRANS_TIME_MSEC, |
141 | .type = V4L2_CTRL_TYPE_INTEGER, | |
142 | .name = "Transaction time (msec)", | |
143 | .minimum = 1, | |
144 | .maximum = 10000, | |
145 | .step = 100, | |
146 | .default_value = 1000, | |
147 | .flags = 0, | |
148 | }, { | |
149 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
150 | .type = V4L2_CTRL_TYPE_INTEGER, | |
151 | .name = "Buffers per transaction", | |
152 | .minimum = 1, | |
153 | .maximum = MEM2MEM_DEF_NUM_BUFS, | |
154 | .step = 1, | |
155 | .default_value = 1, | |
156 | .flags = 0, | |
157 | }, | |
158 | }; | |
159 | ||
160 | #define NUM_FORMATS ARRAY_SIZE(formats) | |
161 | ||
162 | static struct m2mtest_fmt *find_format(struct v4l2_format *f) | |
163 | { | |
164 | struct m2mtest_fmt *fmt; | |
165 | unsigned int k; | |
166 | ||
167 | for (k = 0; k < NUM_FORMATS; k++) { | |
168 | fmt = &formats[k]; | |
169 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
170 | break; | |
171 | } | |
172 | ||
173 | if (k == NUM_FORMATS) | |
174 | return NULL; | |
175 | ||
176 | return &formats[k]; | |
177 | } | |
178 | ||
179 | struct m2mtest_dev { | |
180 | struct v4l2_device v4l2_dev; | |
181 | struct video_device *vfd; | |
182 | ||
183 | atomic_t num_inst; | |
184 | struct mutex dev_mutex; | |
185 | spinlock_t irqlock; | |
186 | ||
187 | struct timer_list timer; | |
188 | ||
189 | struct v4l2_m2m_dev *m2m_dev; | |
190 | }; | |
191 | ||
192 | struct m2mtest_ctx { | |
193 | struct m2mtest_dev *dev; | |
194 | ||
195 | /* Processed buffers in this transaction */ | |
196 | u8 num_processed; | |
197 | ||
198 | /* Transaction length (i.e. how many buffers per transaction) */ | |
199 | u32 translen; | |
200 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
201 | u32 transtime; | |
202 | ||
203 | /* Abort requested by m2m */ | |
204 | int aborting; | |
205 | ||
80072871 TM |
206 | /* Processing mode */ |
207 | int mode; | |
208 | ||
96d8eab5 | 209 | struct v4l2_m2m_ctx *m2m_ctx; |
9f4161a6 TM |
210 | |
211 | /* Source and destination queue data */ | |
212 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
213 | }; |
214 | ||
9f4161a6 TM |
215 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
216 | enum v4l2_buf_type type) | |
217 | { | |
218 | switch (type) { | |
219 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
220 | return &ctx->q_data[V4L2_M2M_SRC]; | |
221 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
222 | return &ctx->q_data[V4L2_M2M_DST]; | |
223 | default: | |
224 | BUG(); | |
225 | } | |
226 | return NULL; | |
227 | } | |
228 | ||
229 | ||
96d8eab5 PO |
230 | static struct v4l2_queryctrl *get_ctrl(int id) |
231 | { | |
232 | int i; | |
233 | ||
234 | for (i = 0; i < ARRAY_SIZE(m2mtest_ctrls); ++i) { | |
235 | if (id == m2mtest_ctrls[i].id) | |
236 | return &m2mtest_ctrls[i]; | |
237 | } | |
238 | ||
239 | return NULL; | |
240 | } | |
241 | ||
242 | static int device_process(struct m2mtest_ctx *ctx, | |
d80ee38c MS |
243 | struct vb2_buffer *in_vb, |
244 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
245 | { |
246 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 247 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
248 | u8 *p_in, *p_out; |
249 | int x, y, t, w; | |
250 | int tile_w, bytes_left; | |
d80ee38c | 251 | int width, height, bytesperline; |
96d8eab5 | 252 | |
9f4161a6 | 253 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
254 | |
255 | width = q_data->width; | |
256 | height = q_data->height; | |
257 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
258 | ||
259 | p_in = vb2_plane_vaddr(in_vb, 0); | |
260 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
261 | if (!p_in || !p_out) { |
262 | v4l2_err(&dev->v4l2_dev, | |
263 | "Acquiring kernel pointers to buffers failed\n"); | |
264 | return -EFAULT; | |
265 | } | |
266 | ||
d80ee38c | 267 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
268 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
269 | return -EINVAL; | |
270 | } | |
271 | ||
d80ee38c | 272 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 273 | / MEM2MEM_NUM_TILES; |
d80ee38c | 274 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
275 | w = 0; |
276 | ||
80072871 TM |
277 | switch (ctx->mode) { |
278 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
279 | p_out += bytesperline * height - bytes_left; | |
280 | for (y = 0; y < height; ++y) { | |
281 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
282 | if (w & 0x1) { | |
283 | for (x = 0; x < tile_w; ++x) | |
284 | *--p_out = *p_in++ + | |
285 | MEM2MEM_COLOR_STEP; | |
286 | } else { | |
287 | for (x = 0; x < tile_w; ++x) | |
288 | *--p_out = *p_in++ - | |
289 | MEM2MEM_COLOR_STEP; | |
290 | } | |
291 | ++w; | |
96d8eab5 | 292 | } |
80072871 TM |
293 | p_in += bytes_left; |
294 | p_out -= bytes_left; | |
295 | } | |
296 | break; | |
297 | ||
298 | case MEM2MEM_HFLIP: | |
299 | for (y = 0; y < height; ++y) { | |
300 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
301 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
302 | if (w & 0x01) { | |
303 | for (x = 0; x < tile_w; ++x) | |
304 | *--p_out = *p_in++ + | |
305 | MEM2MEM_COLOR_STEP; | |
306 | } else { | |
307 | for (x = 0; x < tile_w; ++x) | |
308 | *--p_out = *p_in++ - | |
309 | MEM2MEM_COLOR_STEP; | |
310 | } | |
311 | ++w; | |
312 | } | |
313 | p_in += bytes_left; | |
314 | p_out += bytesperline; | |
315 | } | |
316 | break; | |
317 | ||
318 | case MEM2MEM_VFLIP: | |
319 | p_out += bytesperline * (height - 1); | |
320 | for (y = 0; y < height; ++y) { | |
321 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
322 | if (w & 0x1) { | |
323 | for (x = 0; x < tile_w; ++x) | |
324 | *p_out++ = *p_in++ + | |
325 | MEM2MEM_COLOR_STEP; | |
326 | } else { | |
327 | for (x = 0; x < tile_w; ++x) | |
328 | *p_out++ = *p_in++ - | |
329 | MEM2MEM_COLOR_STEP; | |
330 | } | |
331 | ++w; | |
332 | } | |
333 | p_in += bytes_left; | |
334 | p_out += bytes_left - 2 * bytesperline; | |
335 | } | |
336 | break; | |
337 | ||
338 | default: | |
339 | for (y = 0; y < height; ++y) { | |
340 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
341 | if (w & 0x1) { | |
342 | for (x = 0; x < tile_w; ++x) | |
343 | *p_out++ = *p_in++ + | |
344 | MEM2MEM_COLOR_STEP; | |
345 | } else { | |
346 | for (x = 0; x < tile_w; ++x) | |
347 | *p_out++ = *p_in++ - | |
348 | MEM2MEM_COLOR_STEP; | |
349 | } | |
350 | ++w; | |
351 | } | |
352 | p_in += bytes_left; | |
353 | p_out += bytes_left; | |
96d8eab5 | 354 | } |
96d8eab5 PO |
355 | } |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
361 | { | |
362 | dprintk(dev, "Scheduling a simulated irq\n"); | |
363 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
364 | } | |
365 | ||
366 | /* | |
367 | * mem2mem callbacks | |
368 | */ | |
369 | ||
370 | /** | |
371 | * job_ready() - check whether an instance is ready to be scheduled to run | |
372 | */ | |
373 | static int job_ready(void *priv) | |
374 | { | |
375 | struct m2mtest_ctx *ctx = priv; | |
376 | ||
377 | if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < ctx->translen | |
378 | || v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < ctx->translen) { | |
379 | dprintk(ctx->dev, "Not enough buffers available\n"); | |
380 | return 0; | |
381 | } | |
382 | ||
383 | return 1; | |
384 | } | |
385 | ||
386 | static void job_abort(void *priv) | |
387 | { | |
388 | struct m2mtest_ctx *ctx = priv; | |
389 | ||
390 | /* Will cancel the transaction in the next interrupt handler */ | |
391 | ctx->aborting = 1; | |
392 | } | |
393 | ||
d80ee38c MS |
394 | static void m2mtest_lock(void *priv) |
395 | { | |
396 | struct m2mtest_ctx *ctx = priv; | |
397 | struct m2mtest_dev *dev = ctx->dev; | |
398 | mutex_lock(&dev->dev_mutex); | |
399 | } | |
400 | ||
401 | static void m2mtest_unlock(void *priv) | |
402 | { | |
403 | struct m2mtest_ctx *ctx = priv; | |
404 | struct m2mtest_dev *dev = ctx->dev; | |
405 | mutex_unlock(&dev->dev_mutex); | |
406 | } | |
407 | ||
408 | ||
96d8eab5 PO |
409 | /* device_run() - prepares and starts the device |
410 | * | |
411 | * This simulates all the immediate preparations required before starting | |
412 | * a device. This will be called by the framework when it decides to schedule | |
413 | * a particular instance. | |
414 | */ | |
415 | static void device_run(void *priv) | |
416 | { | |
417 | struct m2mtest_ctx *ctx = priv; | |
418 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 419 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 PO |
420 | |
421 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
422 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
423 | ||
424 | device_process(ctx, src_buf, dst_buf); | |
425 | ||
426 | /* Run a timer, which simulates a hardware irq */ | |
427 | schedule_irq(dev, ctx->transtime); | |
428 | } | |
429 | ||
96d8eab5 PO |
430 | static void device_isr(unsigned long priv) |
431 | { | |
432 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
433 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 434 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
435 | unsigned long flags; |
436 | ||
437 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
438 | ||
439 | if (NULL == curr_ctx) { | |
440 | printk(KERN_ERR | |
441 | "Instance released before the end of transaction\n"); | |
442 | return; | |
443 | } | |
444 | ||
d80ee38c MS |
445 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
446 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
447 | ||
96d8eab5 PO |
448 | curr_ctx->num_processed++; |
449 | ||
d80ee38c MS |
450 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
451 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
452 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
453 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
454 | ||
96d8eab5 PO |
455 | if (curr_ctx->num_processed == curr_ctx->translen |
456 | || curr_ctx->aborting) { | |
457 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
458 | curr_ctx->num_processed = 0; | |
96d8eab5 PO |
459 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->m2m_ctx); |
460 | } else { | |
96d8eab5 PO |
461 | device_run(curr_ctx); |
462 | } | |
463 | } | |
464 | ||
96d8eab5 PO |
465 | /* |
466 | * video ioctls | |
467 | */ | |
468 | static int vidioc_querycap(struct file *file, void *priv, | |
469 | struct v4l2_capability *cap) | |
470 | { | |
471 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
472 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
473 | cap->bus_info[0] = 0; | |
96d8eab5 PO |
474 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
475 | | V4L2_CAP_STREAMING; | |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
481 | { | |
482 | int i, num; | |
483 | struct m2mtest_fmt *fmt; | |
484 | ||
485 | num = 0; | |
486 | ||
487 | for (i = 0; i < NUM_FORMATS; ++i) { | |
488 | if (formats[i].types & type) { | |
489 | /* index-th format of type type found ? */ | |
490 | if (num == f->index) | |
491 | break; | |
492 | /* Correct type but haven't reached our index yet, | |
493 | * just increment per-type index */ | |
494 | ++num; | |
495 | } | |
496 | } | |
497 | ||
498 | if (i < NUM_FORMATS) { | |
499 | /* Format found */ | |
500 | fmt = &formats[i]; | |
501 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
502 | f->pixelformat = fmt->fourcc; | |
503 | return 0; | |
504 | } | |
505 | ||
506 | /* Format not found */ | |
507 | return -EINVAL; | |
508 | } | |
509 | ||
510 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
511 | struct v4l2_fmtdesc *f) | |
512 | { | |
513 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
514 | } | |
515 | ||
516 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
517 | struct v4l2_fmtdesc *f) | |
518 | { | |
519 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
520 | } | |
521 | ||
522 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
523 | { | |
d80ee38c | 524 | struct vb2_queue *vq; |
96d8eab5 PO |
525 | struct m2mtest_q_data *q_data; |
526 | ||
527 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
528 | if (!vq) | |
529 | return -EINVAL; | |
530 | ||
9f4161a6 | 531 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
532 | |
533 | f->fmt.pix.width = q_data->width; | |
534 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 535 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
536 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
537 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
538 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
544 | struct v4l2_format *f) | |
545 | { | |
546 | return vidioc_g_fmt(priv, f); | |
547 | } | |
548 | ||
549 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
550 | struct v4l2_format *f) | |
551 | { | |
552 | return vidioc_g_fmt(priv, f); | |
553 | } | |
554 | ||
555 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
556 | { | |
557 | enum v4l2_field field; | |
558 | ||
559 | field = f->fmt.pix.field; | |
560 | ||
561 | if (field == V4L2_FIELD_ANY) | |
562 | field = V4L2_FIELD_NONE; | |
563 | else if (V4L2_FIELD_NONE != field) | |
564 | return -EINVAL; | |
565 | ||
566 | /* V4L2 specification suggests the driver corrects the format struct | |
567 | * if any of the dimensions is unsupported */ | |
568 | f->fmt.pix.field = field; | |
569 | ||
570 | if (f->fmt.pix.height < MIN_H) | |
571 | f->fmt.pix.height = MIN_H; | |
572 | else if (f->fmt.pix.height > MAX_H) | |
573 | f->fmt.pix.height = MAX_H; | |
574 | ||
575 | if (f->fmt.pix.width < MIN_W) | |
576 | f->fmt.pix.width = MIN_W; | |
577 | else if (f->fmt.pix.width > MAX_W) | |
578 | f->fmt.pix.width = MAX_W; | |
579 | ||
580 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
581 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
582 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
588 | struct v4l2_format *f) | |
589 | { | |
590 | struct m2mtest_fmt *fmt; | |
591 | struct m2mtest_ctx *ctx = priv; | |
592 | ||
593 | fmt = find_format(f); | |
594 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
595 | v4l2_err(&ctx->dev->v4l2_dev, | |
596 | "Fourcc format (0x%08x) invalid.\n", | |
597 | f->fmt.pix.pixelformat); | |
598 | return -EINVAL; | |
599 | } | |
600 | ||
601 | return vidioc_try_fmt(f, fmt); | |
602 | } | |
603 | ||
604 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
605 | struct v4l2_format *f) | |
606 | { | |
607 | struct m2mtest_fmt *fmt; | |
608 | struct m2mtest_ctx *ctx = priv; | |
609 | ||
610 | fmt = find_format(f); | |
611 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
612 | v4l2_err(&ctx->dev->v4l2_dev, | |
613 | "Fourcc format (0x%08x) invalid.\n", | |
614 | f->fmt.pix.pixelformat); | |
615 | return -EINVAL; | |
616 | } | |
617 | ||
618 | return vidioc_try_fmt(f, fmt); | |
619 | } | |
620 | ||
621 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
622 | { | |
623 | struct m2mtest_q_data *q_data; | |
d80ee38c | 624 | struct vb2_queue *vq; |
96d8eab5 PO |
625 | |
626 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
627 | if (!vq) | |
628 | return -EINVAL; | |
629 | ||
9f4161a6 | 630 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
631 | if (!q_data) |
632 | return -EINVAL; | |
633 | ||
d80ee38c | 634 | if (vb2_is_busy(vq)) { |
96d8eab5 | 635 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 636 | return -EBUSY; |
96d8eab5 PO |
637 | } |
638 | ||
639 | q_data->fmt = find_format(f); | |
640 | q_data->width = f->fmt.pix.width; | |
641 | q_data->height = f->fmt.pix.height; | |
642 | q_data->sizeimage = q_data->width * q_data->height | |
643 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
644 | |
645 | dprintk(ctx->dev, | |
646 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
647 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
648 | ||
07e80305 | 649 | return 0; |
96d8eab5 PO |
650 | } |
651 | ||
652 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
653 | struct v4l2_format *f) | |
654 | { | |
655 | int ret; | |
656 | ||
657 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
658 | if (ret) | |
659 | return ret; | |
660 | ||
661 | return vidioc_s_fmt(priv, f); | |
662 | } | |
663 | ||
664 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
665 | struct v4l2_format *f) | |
666 | { | |
667 | int ret; | |
668 | ||
669 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
670 | if (ret) | |
671 | return ret; | |
672 | ||
673 | return vidioc_s_fmt(priv, f); | |
674 | } | |
675 | ||
676 | static int vidioc_reqbufs(struct file *file, void *priv, | |
677 | struct v4l2_requestbuffers *reqbufs) | |
678 | { | |
679 | struct m2mtest_ctx *ctx = priv; | |
680 | ||
681 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
682 | } | |
683 | ||
684 | static int vidioc_querybuf(struct file *file, void *priv, | |
685 | struct v4l2_buffer *buf) | |
686 | { | |
687 | struct m2mtest_ctx *ctx = priv; | |
688 | ||
689 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
690 | } | |
691 | ||
692 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
693 | { | |
694 | struct m2mtest_ctx *ctx = priv; | |
695 | ||
696 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
697 | } | |
698 | ||
699 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
700 | { | |
701 | struct m2mtest_ctx *ctx = priv; | |
702 | ||
703 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
704 | } | |
705 | ||
706 | static int vidioc_streamon(struct file *file, void *priv, | |
707 | enum v4l2_buf_type type) | |
708 | { | |
709 | struct m2mtest_ctx *ctx = priv; | |
710 | ||
711 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
712 | } | |
713 | ||
714 | static int vidioc_streamoff(struct file *file, void *priv, | |
715 | enum v4l2_buf_type type) | |
716 | { | |
717 | struct m2mtest_ctx *ctx = priv; | |
718 | ||
719 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
720 | } | |
721 | ||
722 | static int vidioc_queryctrl(struct file *file, void *priv, | |
723 | struct v4l2_queryctrl *qc) | |
724 | { | |
725 | struct v4l2_queryctrl *c; | |
726 | ||
727 | c = get_ctrl(qc->id); | |
728 | if (!c) | |
729 | return -EINVAL; | |
730 | ||
731 | *qc = *c; | |
732 | return 0; | |
733 | } | |
734 | ||
735 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
736 | struct v4l2_control *ctrl) | |
737 | { | |
738 | struct m2mtest_ctx *ctx = priv; | |
739 | ||
740 | switch (ctrl->id) { | |
80072871 TM |
741 | case V4L2_CID_HFLIP: |
742 | ctrl->value = (ctx->mode & MEM2MEM_HFLIP) ? 1 : 0; | |
743 | break; | |
744 | ||
745 | case V4L2_CID_VFLIP: | |
746 | ctrl->value = (ctx->mode & MEM2MEM_VFLIP) ? 1 : 0; | |
747 | break; | |
748 | ||
96d8eab5 PO |
749 | case V4L2_CID_TRANS_TIME_MSEC: |
750 | ctrl->value = ctx->transtime; | |
751 | break; | |
752 | ||
753 | case V4L2_CID_TRANS_NUM_BUFS: | |
754 | ctrl->value = ctx->translen; | |
755 | break; | |
756 | ||
757 | default: | |
758 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
759 | return -EINVAL; | |
760 | } | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | static int check_ctrl_val(struct m2mtest_ctx *ctx, struct v4l2_control *ctrl) | |
766 | { | |
767 | struct v4l2_queryctrl *c; | |
768 | ||
769 | c = get_ctrl(ctrl->id); | |
770 | if (!c) | |
771 | return -EINVAL; | |
772 | ||
773 | if (ctrl->value < c->minimum || ctrl->value > c->maximum) { | |
774 | v4l2_err(&ctx->dev->v4l2_dev, "Value out of range\n"); | |
775 | return -ERANGE; | |
776 | } | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
782 | struct v4l2_control *ctrl) | |
783 | { | |
784 | struct m2mtest_ctx *ctx = priv; | |
785 | int ret = 0; | |
786 | ||
787 | ret = check_ctrl_val(ctx, ctrl); | |
788 | if (ret != 0) | |
789 | return ret; | |
790 | ||
791 | switch (ctrl->id) { | |
80072871 TM |
792 | case V4L2_CID_HFLIP: |
793 | if (ctrl->value) | |
794 | ctx->mode |= MEM2MEM_HFLIP; | |
795 | else | |
796 | ctx->mode &= ~MEM2MEM_HFLIP; | |
797 | break; | |
798 | ||
799 | case V4L2_CID_VFLIP: | |
800 | if (ctrl->value) | |
801 | ctx->mode |= MEM2MEM_VFLIP; | |
802 | else | |
803 | ctx->mode &= ~MEM2MEM_VFLIP; | |
804 | break; | |
805 | ||
96d8eab5 PO |
806 | case V4L2_CID_TRANS_TIME_MSEC: |
807 | ctx->transtime = ctrl->value; | |
808 | break; | |
809 | ||
810 | case V4L2_CID_TRANS_NUM_BUFS: | |
811 | ctx->translen = ctrl->value; | |
812 | break; | |
813 | ||
814 | default: | |
815 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
816 | return -EINVAL; | |
817 | } | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | ||
823 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
824 | .vidioc_querycap = vidioc_querycap, | |
825 | ||
826 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
827 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
828 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
829 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
830 | ||
831 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
832 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
833 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
834 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
835 | ||
836 | .vidioc_reqbufs = vidioc_reqbufs, | |
837 | .vidioc_querybuf = vidioc_querybuf, | |
838 | ||
839 | .vidioc_qbuf = vidioc_qbuf, | |
840 | .vidioc_dqbuf = vidioc_dqbuf, | |
841 | ||
842 | .vidioc_streamon = vidioc_streamon, | |
843 | .vidioc_streamoff = vidioc_streamoff, | |
844 | ||
845 | .vidioc_queryctrl = vidioc_queryctrl, | |
846 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
847 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
848 | }; | |
849 | ||
850 | ||
851 | /* | |
852 | * Queue operations | |
853 | */ | |
854 | ||
fc714e70 GL |
855 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
856 | const struct v4l2_format *fmt, | |
857 | unsigned int *nbuffers, unsigned int *nplanes, | |
858 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 859 | { |
d80ee38c | 860 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 861 | struct m2mtest_q_data *q_data; |
d80ee38c | 862 | unsigned int size, count = *nbuffers; |
96d8eab5 | 863 | |
9f4161a6 | 864 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 865 | |
d80ee38c MS |
866 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
867 | ||
868 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
869 | (count)--; | |
96d8eab5 | 870 | |
d80ee38c MS |
871 | *nplanes = 1; |
872 | *nbuffers = count; | |
873 | sizes[0] = size; | |
96d8eab5 | 874 | |
d80ee38c MS |
875 | /* |
876 | * videobuf2-vmalloc allocator is context-less so no need to set | |
877 | * alloc_ctxs array. | |
878 | */ | |
96d8eab5 | 879 | |
d80ee38c | 880 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
881 | |
882 | return 0; | |
883 | } | |
884 | ||
d80ee38c | 885 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 886 | { |
d80ee38c | 887 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 888 | struct m2mtest_q_data *q_data; |
96d8eab5 | 889 | |
d80ee38c | 890 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 891 | |
9f4161a6 | 892 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 893 | |
d80ee38c MS |
894 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
895 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
896 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
897 | return -EINVAL; |
898 | } | |
899 | ||
d80ee38c | 900 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
901 | |
902 | return 0; | |
96d8eab5 PO |
903 | } |
904 | ||
d80ee38c | 905 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 906 | { |
d80ee38c MS |
907 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
908 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
96d8eab5 PO |
909 | } |
910 | ||
0f910bf0 MO |
911 | static void m2mtest_wait_prepare(struct vb2_queue *q) |
912 | { | |
913 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
914 | m2mtest_unlock(ctx); | |
915 | } | |
916 | ||
917 | static void m2mtest_wait_finish(struct vb2_queue *q) | |
918 | { | |
919 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
920 | m2mtest_lock(ctx); | |
921 | } | |
922 | ||
d80ee38c MS |
923 | static struct vb2_ops m2mtest_qops = { |
924 | .queue_setup = m2mtest_queue_setup, | |
925 | .buf_prepare = m2mtest_buf_prepare, | |
926 | .buf_queue = m2mtest_buf_queue, | |
0f910bf0 MO |
927 | .wait_prepare = m2mtest_wait_prepare, |
928 | .wait_finish = m2mtest_wait_finish, | |
96d8eab5 PO |
929 | }; |
930 | ||
d80ee38c | 931 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
932 | { |
933 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 934 | int ret; |
96d8eab5 | 935 | |
d80ee38c MS |
936 | memset(src_vq, 0, sizeof(*src_vq)); |
937 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
938 | src_vq->io_modes = VB2_MMAP; | |
939 | src_vq->drv_priv = ctx; | |
940 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
941 | src_vq->ops = &m2mtest_qops; | |
942 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
943 | ||
944 | ret = vb2_queue_init(src_vq); | |
945 | if (ret) | |
946 | return ret; | |
96d8eab5 | 947 | |
d80ee38c MS |
948 | memset(dst_vq, 0, sizeof(*dst_vq)); |
949 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
950 | dst_vq->io_modes = VB2_MMAP; | |
951 | dst_vq->drv_priv = ctx; | |
952 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
953 | dst_vq->ops = &m2mtest_qops; | |
954 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
955 | ||
956 | return vb2_queue_init(dst_vq); | |
957 | } | |
96d8eab5 PO |
958 | |
959 | /* | |
960 | * File operations | |
961 | */ | |
962 | static int m2mtest_open(struct file *file) | |
963 | { | |
964 | struct m2mtest_dev *dev = video_drvdata(file); | |
965 | struct m2mtest_ctx *ctx = NULL; | |
966 | ||
967 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
968 | if (!ctx) | |
969 | return -ENOMEM; | |
970 | ||
971 | file->private_data = ctx; | |
972 | ctx->dev = dev; | |
973 | ctx->translen = MEM2MEM_DEF_TRANSLEN; | |
974 | ctx->transtime = MEM2MEM_DEF_TRANSTIME; | |
975 | ctx->num_processed = 0; | |
80072871 | 976 | ctx->mode = 0; |
96d8eab5 | 977 | |
9f4161a6 TM |
978 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
979 | ctx->q_data[V4L2_M2M_DST].fmt = &formats[0]; | |
980 | ||
d80ee38c MS |
981 | ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
982 | ||
96d8eab5 | 983 | if (IS_ERR(ctx->m2m_ctx)) { |
16ee9bb1 DC |
984 | int ret = PTR_ERR(ctx->m2m_ctx); |
985 | ||
96d8eab5 | 986 | kfree(ctx); |
16ee9bb1 | 987 | return ret; |
96d8eab5 PO |
988 | } |
989 | ||
990 | atomic_inc(&dev->num_inst); | |
991 | ||
992 | dprintk(dev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
997 | static int m2mtest_release(struct file *file) | |
998 | { | |
999 | struct m2mtest_dev *dev = video_drvdata(file); | |
1000 | struct m2mtest_ctx *ctx = file->private_data; | |
1001 | ||
1002 | dprintk(dev, "Releasing instance %p\n", ctx); | |
1003 | ||
1004 | v4l2_m2m_ctx_release(ctx->m2m_ctx); | |
1005 | kfree(ctx); | |
1006 | ||
1007 | atomic_dec(&dev->num_inst); | |
1008 | ||
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | static unsigned int m2mtest_poll(struct file *file, | |
1013 | struct poll_table_struct *wait) | |
1014 | { | |
abf84383 | 1015 | struct m2mtest_ctx *ctx = file->private_data; |
96d8eab5 PO |
1016 | |
1017 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
1018 | } | |
1019 | ||
1020 | static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma) | |
1021 | { | |
abf84383 | 1022 | struct m2mtest_ctx *ctx = file->private_data; |
96d8eab5 PO |
1023 | |
1024 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
1025 | } | |
1026 | ||
1027 | static const struct v4l2_file_operations m2mtest_fops = { | |
1028 | .owner = THIS_MODULE, | |
1029 | .open = m2mtest_open, | |
1030 | .release = m2mtest_release, | |
1031 | .poll = m2mtest_poll, | |
07e80305 | 1032 | .unlocked_ioctl = video_ioctl2, |
96d8eab5 PO |
1033 | .mmap = m2mtest_mmap, |
1034 | }; | |
1035 | ||
1036 | static struct video_device m2mtest_videodev = { | |
1037 | .name = MEM2MEM_NAME, | |
1038 | .fops = &m2mtest_fops, | |
1039 | .ioctl_ops = &m2mtest_ioctl_ops, | |
1040 | .minor = -1, | |
1041 | .release = video_device_release, | |
1042 | }; | |
1043 | ||
1044 | static struct v4l2_m2m_ops m2m_ops = { | |
1045 | .device_run = device_run, | |
1046 | .job_ready = job_ready, | |
1047 | .job_abort = job_abort, | |
d80ee38c MS |
1048 | .lock = m2mtest_lock, |
1049 | .unlock = m2mtest_unlock, | |
96d8eab5 PO |
1050 | }; |
1051 | ||
1052 | static int m2mtest_probe(struct platform_device *pdev) | |
1053 | { | |
1054 | struct m2mtest_dev *dev; | |
1055 | struct video_device *vfd; | |
1056 | int ret; | |
1057 | ||
1058 | dev = kzalloc(sizeof *dev, GFP_KERNEL); | |
1059 | if (!dev) | |
1060 | return -ENOMEM; | |
1061 | ||
1062 | spin_lock_init(&dev->irqlock); | |
1063 | ||
1064 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
1065 | if (ret) | |
1066 | goto free_dev; | |
1067 | ||
1068 | atomic_set(&dev->num_inst, 0); | |
1069 | mutex_init(&dev->dev_mutex); | |
1070 | ||
1071 | vfd = video_device_alloc(); | |
1072 | if (!vfd) { | |
1073 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1074 | ret = -ENOMEM; | |
1075 | goto unreg_dev; | |
1076 | } | |
1077 | ||
1078 | *vfd = m2mtest_videodev; | |
5126f259 HV |
1079 | /* Locking in file operations other than ioctl should be done |
1080 | by the driver, not the V4L2 core. | |
1081 | This driver needs auditing so that this flag can be removed. */ | |
1082 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); | |
07e80305 | 1083 | vfd->lock = &dev->dev_mutex; |
96d8eab5 PO |
1084 | |
1085 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1086 | if (ret) { | |
1087 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1088 | goto rel_vdev; | |
1089 | } | |
1090 | ||
1091 | video_set_drvdata(vfd, dev); | |
1092 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1093 | dev->vfd = vfd; | |
1094 | v4l2_info(&dev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1095 | "Device registered as /dev/video%d\n", vfd->num); | |
1096 | ||
1097 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1098 | platform_set_drvdata(pdev, dev); | |
1099 | ||
1100 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1101 | if (IS_ERR(dev->m2m_dev)) { | |
1102 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1103 | ret = PTR_ERR(dev->m2m_dev); | |
1104 | goto err_m2m; | |
1105 | } | |
1106 | ||
1107 | return 0; | |
1108 | ||
d80ee38c | 1109 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1110 | err_m2m: |
1111 | video_unregister_device(dev->vfd); | |
1112 | rel_vdev: | |
1113 | video_device_release(vfd); | |
1114 | unreg_dev: | |
1115 | v4l2_device_unregister(&dev->v4l2_dev); | |
1116 | free_dev: | |
1117 | kfree(dev); | |
1118 | ||
1119 | return ret; | |
1120 | } | |
1121 | ||
1122 | static int m2mtest_remove(struct platform_device *pdev) | |
1123 | { | |
1124 | struct m2mtest_dev *dev = | |
1125 | (struct m2mtest_dev *)platform_get_drvdata(pdev); | |
1126 | ||
1127 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1128 | v4l2_m2m_release(dev->m2m_dev); | |
1129 | del_timer_sync(&dev->timer); | |
1130 | video_unregister_device(dev->vfd); | |
1131 | v4l2_device_unregister(&dev->v4l2_dev); | |
1132 | kfree(dev); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static struct platform_driver m2mtest_pdrv = { | |
1138 | .probe = m2mtest_probe, | |
1139 | .remove = m2mtest_remove, | |
1140 | .driver = { | |
1141 | .name = MEM2MEM_NAME, | |
1142 | .owner = THIS_MODULE, | |
1143 | }, | |
1144 | }; | |
1145 | ||
1146 | static void __exit m2mtest_exit(void) | |
1147 | { | |
1148 | platform_driver_unregister(&m2mtest_pdrv); | |
1149 | platform_device_unregister(&m2mtest_pdev); | |
1150 | } | |
1151 | ||
1152 | static int __init m2mtest_init(void) | |
1153 | { | |
1154 | int ret; | |
1155 | ||
1156 | ret = platform_device_register(&m2mtest_pdev); | |
1157 | if (ret) | |
1158 | return ret; | |
1159 | ||
1160 | ret = platform_driver_register(&m2mtest_pdrv); | |
1161 | if (ret) | |
1162 | platform_device_unregister(&m2mtest_pdev); | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | module_init(m2mtest_init); | |
1168 | module_exit(m2mtest_exit); | |
1169 |