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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> | |
d3dd59c2 | 30 | #include <media/v4l2-ctrls.h> |
d80ee38c | 31 | #include <media/videobuf2-vmalloc.h> |
96d8eab5 PO |
32 | |
33 | #define MEM2MEM_TEST_MODULE_NAME "mem2mem-testdev" | |
34 | ||
35 | MODULE_DESCRIPTION("Virtual device for mem2mem framework testing"); | |
95072084 | 36 | MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>"); |
96d8eab5 | 37 | MODULE_LICENSE("GPL"); |
1990d50b | 38 | MODULE_VERSION("0.1.1"); |
96d8eab5 PO |
39 | |
40 | #define MIN_W 32 | |
41 | #define MIN_H 32 | |
42 | #define MAX_W 640 | |
43 | #define MAX_H 480 | |
9ce3ce4d | 44 | #define DIM_ALIGN_MASK 7 /* 8-byte alignment for line length */ |
96d8eab5 PO |
45 | |
46 | /* Flags that indicate a format can be used for capture/output */ | |
47 | #define MEM2MEM_CAPTURE (1 << 0) | |
48 | #define MEM2MEM_OUTPUT (1 << 1) | |
49 | ||
50 | #define MEM2MEM_NAME "m2m-testdev" | |
51 | ||
52 | /* Per queue */ | |
53 | #define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME | |
54 | /* In bytes, per queue */ | |
55 | #define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024) | |
56 | ||
57 | /* Default transaction time in msec */ | |
58 | #define MEM2MEM_DEF_TRANSTIME 1000 | |
59 | /* Default number of buffers per transaction */ | |
60 | #define MEM2MEM_DEF_TRANSLEN 1 | |
61 | #define MEM2MEM_COLOR_STEP (0xff >> 4) | |
62 | #define MEM2MEM_NUM_TILES 8 | |
63 | ||
80072871 TM |
64 | /* Flags that indicate processing mode */ |
65 | #define MEM2MEM_HFLIP (1 << 0) | |
66 | #define MEM2MEM_VFLIP (1 << 1) | |
67 | ||
96d8eab5 PO |
68 | #define dprintk(dev, fmt, arg...) \ |
69 | v4l2_dbg(1, 1, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) | |
70 | ||
71 | ||
72 | void m2mtest_dev_release(struct device *dev) | |
73 | {} | |
74 | ||
75 | static struct platform_device m2mtest_pdev = { | |
76 | .name = MEM2MEM_NAME, | |
77 | .dev.release = m2mtest_dev_release, | |
78 | }; | |
79 | ||
80 | struct m2mtest_fmt { | |
81 | char *name; | |
82 | u32 fourcc; | |
83 | int depth; | |
84 | /* Types the format can be used for */ | |
85 | u32 types; | |
86 | }; | |
87 | ||
88 | static struct m2mtest_fmt formats[] = { | |
89 | { | |
90 | .name = "RGB565 (BE)", | |
91 | .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */ | |
92 | .depth = 16, | |
93 | /* Both capture and output format */ | |
94 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, | |
95 | }, | |
96 | { | |
97 | .name = "4:2:2, packed, YUYV", | |
98 | .fourcc = V4L2_PIX_FMT_YUYV, | |
99 | .depth = 16, | |
100 | /* Output-only format */ | |
101 | .types = MEM2MEM_OUTPUT, | |
102 | }, | |
103 | }; | |
104 | ||
d3dd59c2 HV |
105 | #define NUM_FORMATS ARRAY_SIZE(formats) |
106 | ||
96d8eab5 PO |
107 | /* Per-queue, driver-specific private data */ |
108 | struct m2mtest_q_data { | |
109 | unsigned int width; | |
110 | unsigned int height; | |
111 | unsigned int sizeimage; | |
112 | struct m2mtest_fmt *fmt; | |
113 | }; | |
114 | ||
115 | enum { | |
116 | V4L2_M2M_SRC = 0, | |
117 | V4L2_M2M_DST = 1, | |
118 | }; | |
119 | ||
d3dd59c2 HV |
120 | #define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000) |
121 | #define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001) | |
96d8eab5 PO |
122 | |
123 | static struct m2mtest_fmt *find_format(struct v4l2_format *f) | |
124 | { | |
125 | struct m2mtest_fmt *fmt; | |
126 | unsigned int k; | |
127 | ||
128 | for (k = 0; k < NUM_FORMATS; k++) { | |
129 | fmt = &formats[k]; | |
130 | if (fmt->fourcc == f->fmt.pix.pixelformat) | |
131 | break; | |
132 | } | |
133 | ||
134 | if (k == NUM_FORMATS) | |
135 | return NULL; | |
136 | ||
137 | return &formats[k]; | |
138 | } | |
139 | ||
140 | struct m2mtest_dev { | |
141 | struct v4l2_device v4l2_dev; | |
142 | struct video_device *vfd; | |
143 | ||
144 | atomic_t num_inst; | |
145 | struct mutex dev_mutex; | |
146 | spinlock_t irqlock; | |
147 | ||
148 | struct timer_list timer; | |
149 | ||
150 | struct v4l2_m2m_dev *m2m_dev; | |
151 | }; | |
152 | ||
153 | struct m2mtest_ctx { | |
d3dd59c2 | 154 | struct v4l2_fh fh; |
96d8eab5 PO |
155 | struct m2mtest_dev *dev; |
156 | ||
d3dd59c2 HV |
157 | struct v4l2_ctrl_handler hdl; |
158 | ||
96d8eab5 PO |
159 | /* Processed buffers in this transaction */ |
160 | u8 num_processed; | |
161 | ||
162 | /* Transaction length (i.e. how many buffers per transaction) */ | |
163 | u32 translen; | |
164 | /* Transaction time (i.e. simulated processing time) in milliseconds */ | |
165 | u32 transtime; | |
166 | ||
167 | /* Abort requested by m2m */ | |
168 | int aborting; | |
169 | ||
80072871 TM |
170 | /* Processing mode */ |
171 | int mode; | |
172 | ||
96d8eab5 | 173 | struct v4l2_m2m_ctx *m2m_ctx; |
9f4161a6 TM |
174 | |
175 | /* Source and destination queue data */ | |
176 | struct m2mtest_q_data q_data[2]; | |
96d8eab5 PO |
177 | }; |
178 | ||
d3dd59c2 HV |
179 | static inline struct m2mtest_ctx *file2ctx(struct file *file) |
180 | { | |
181 | return container_of(file->private_data, struct m2mtest_ctx, fh); | |
182 | } | |
183 | ||
9f4161a6 TM |
184 | static struct m2mtest_q_data *get_q_data(struct m2mtest_ctx *ctx, |
185 | enum v4l2_buf_type type) | |
186 | { | |
187 | switch (type) { | |
188 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
189 | return &ctx->q_data[V4L2_M2M_SRC]; | |
190 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
191 | return &ctx->q_data[V4L2_M2M_DST]; | |
192 | default: | |
193 | BUG(); | |
194 | } | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | ||
96d8eab5 | 199 | static int device_process(struct m2mtest_ctx *ctx, |
d80ee38c MS |
200 | struct vb2_buffer *in_vb, |
201 | struct vb2_buffer *out_vb) | |
96d8eab5 PO |
202 | { |
203 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 204 | struct m2mtest_q_data *q_data; |
96d8eab5 PO |
205 | u8 *p_in, *p_out; |
206 | int x, y, t, w; | |
207 | int tile_w, bytes_left; | |
d80ee38c | 208 | int width, height, bytesperline; |
96d8eab5 | 209 | |
9f4161a6 | 210 | q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); |
d80ee38c MS |
211 | |
212 | width = q_data->width; | |
213 | height = q_data->height; | |
214 | bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
215 | ||
216 | p_in = vb2_plane_vaddr(in_vb, 0); | |
217 | p_out = vb2_plane_vaddr(out_vb, 0); | |
96d8eab5 PO |
218 | if (!p_in || !p_out) { |
219 | v4l2_err(&dev->v4l2_dev, | |
220 | "Acquiring kernel pointers to buffers failed\n"); | |
221 | return -EFAULT; | |
222 | } | |
223 | ||
d80ee38c | 224 | if (vb2_plane_size(in_vb, 0) > vb2_plane_size(out_vb, 0)) { |
96d8eab5 PO |
225 | v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); |
226 | return -EINVAL; | |
227 | } | |
228 | ||
d80ee38c | 229 | tile_w = (width * (q_data[V4L2_M2M_DST].fmt->depth >> 3)) |
96d8eab5 | 230 | / MEM2MEM_NUM_TILES; |
d80ee38c | 231 | bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES; |
96d8eab5 PO |
232 | w = 0; |
233 | ||
80072871 TM |
234 | switch (ctx->mode) { |
235 | case MEM2MEM_HFLIP | MEM2MEM_VFLIP: | |
236 | p_out += bytesperline * height - bytes_left; | |
237 | for (y = 0; y < height; ++y) { | |
238 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
239 | if (w & 0x1) { | |
240 | for (x = 0; x < tile_w; ++x) | |
241 | *--p_out = *p_in++ + | |
242 | MEM2MEM_COLOR_STEP; | |
243 | } else { | |
244 | for (x = 0; x < tile_w; ++x) | |
245 | *--p_out = *p_in++ - | |
246 | MEM2MEM_COLOR_STEP; | |
247 | } | |
248 | ++w; | |
96d8eab5 | 249 | } |
80072871 TM |
250 | p_in += bytes_left; |
251 | p_out -= bytes_left; | |
252 | } | |
253 | break; | |
254 | ||
255 | case MEM2MEM_HFLIP: | |
256 | for (y = 0; y < height; ++y) { | |
257 | p_out += MEM2MEM_NUM_TILES * tile_w; | |
258 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
259 | if (w & 0x01) { | |
260 | for (x = 0; x < tile_w; ++x) | |
261 | *--p_out = *p_in++ + | |
262 | MEM2MEM_COLOR_STEP; | |
263 | } else { | |
264 | for (x = 0; x < tile_w; ++x) | |
265 | *--p_out = *p_in++ - | |
266 | MEM2MEM_COLOR_STEP; | |
267 | } | |
268 | ++w; | |
269 | } | |
270 | p_in += bytes_left; | |
271 | p_out += bytesperline; | |
272 | } | |
273 | break; | |
274 | ||
275 | case MEM2MEM_VFLIP: | |
276 | p_out += bytesperline * (height - 1); | |
277 | for (y = 0; y < height; ++y) { | |
278 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
279 | if (w & 0x1) { | |
280 | for (x = 0; x < tile_w; ++x) | |
281 | *p_out++ = *p_in++ + | |
282 | MEM2MEM_COLOR_STEP; | |
283 | } else { | |
284 | for (x = 0; x < tile_w; ++x) | |
285 | *p_out++ = *p_in++ - | |
286 | MEM2MEM_COLOR_STEP; | |
287 | } | |
288 | ++w; | |
289 | } | |
290 | p_in += bytes_left; | |
291 | p_out += bytes_left - 2 * bytesperline; | |
292 | } | |
293 | break; | |
294 | ||
295 | default: | |
296 | for (y = 0; y < height; ++y) { | |
297 | for (t = 0; t < MEM2MEM_NUM_TILES; ++t) { | |
298 | if (w & 0x1) { | |
299 | for (x = 0; x < tile_w; ++x) | |
300 | *p_out++ = *p_in++ + | |
301 | MEM2MEM_COLOR_STEP; | |
302 | } else { | |
303 | for (x = 0; x < tile_w; ++x) | |
304 | *p_out++ = *p_in++ - | |
305 | MEM2MEM_COLOR_STEP; | |
306 | } | |
307 | ++w; | |
308 | } | |
309 | p_in += bytes_left; | |
310 | p_out += bytes_left; | |
96d8eab5 | 311 | } |
96d8eab5 PO |
312 | } |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | static void schedule_irq(struct m2mtest_dev *dev, int msec_timeout) | |
318 | { | |
319 | dprintk(dev, "Scheduling a simulated irq\n"); | |
320 | mod_timer(&dev->timer, jiffies + msecs_to_jiffies(msec_timeout)); | |
321 | } | |
322 | ||
323 | /* | |
324 | * mem2mem callbacks | |
325 | */ | |
326 | ||
327 | /** | |
328 | * job_ready() - check whether an instance is ready to be scheduled to run | |
329 | */ | |
330 | static int job_ready(void *priv) | |
331 | { | |
332 | struct m2mtest_ctx *ctx = priv; | |
333 | ||
334 | if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < ctx->translen | |
335 | || v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < ctx->translen) { | |
336 | dprintk(ctx->dev, "Not enough buffers available\n"); | |
337 | return 0; | |
338 | } | |
339 | ||
340 | return 1; | |
341 | } | |
342 | ||
343 | static void job_abort(void *priv) | |
344 | { | |
345 | struct m2mtest_ctx *ctx = priv; | |
346 | ||
347 | /* Will cancel the transaction in the next interrupt handler */ | |
348 | ctx->aborting = 1; | |
349 | } | |
350 | ||
d80ee38c MS |
351 | static void m2mtest_lock(void *priv) |
352 | { | |
353 | struct m2mtest_ctx *ctx = priv; | |
354 | struct m2mtest_dev *dev = ctx->dev; | |
355 | mutex_lock(&dev->dev_mutex); | |
356 | } | |
357 | ||
358 | static void m2mtest_unlock(void *priv) | |
359 | { | |
360 | struct m2mtest_ctx *ctx = priv; | |
361 | struct m2mtest_dev *dev = ctx->dev; | |
362 | mutex_unlock(&dev->dev_mutex); | |
363 | } | |
364 | ||
365 | ||
96d8eab5 PO |
366 | /* device_run() - prepares and starts the device |
367 | * | |
368 | * This simulates all the immediate preparations required before starting | |
369 | * a device. This will be called by the framework when it decides to schedule | |
370 | * a particular instance. | |
371 | */ | |
372 | static void device_run(void *priv) | |
373 | { | |
374 | struct m2mtest_ctx *ctx = priv; | |
375 | struct m2mtest_dev *dev = ctx->dev; | |
d80ee38c | 376 | struct vb2_buffer *src_buf, *dst_buf; |
96d8eab5 PO |
377 | |
378 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); | |
379 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); | |
380 | ||
381 | device_process(ctx, src_buf, dst_buf); | |
382 | ||
383 | /* Run a timer, which simulates a hardware irq */ | |
384 | schedule_irq(dev, ctx->transtime); | |
385 | } | |
386 | ||
96d8eab5 PO |
387 | static void device_isr(unsigned long priv) |
388 | { | |
389 | struct m2mtest_dev *m2mtest_dev = (struct m2mtest_dev *)priv; | |
390 | struct m2mtest_ctx *curr_ctx; | |
d80ee38c | 391 | struct vb2_buffer *src_vb, *dst_vb; |
96d8eab5 PO |
392 | unsigned long flags; |
393 | ||
394 | curr_ctx = v4l2_m2m_get_curr_priv(m2mtest_dev->m2m_dev); | |
395 | ||
396 | if (NULL == curr_ctx) { | |
397 | printk(KERN_ERR | |
398 | "Instance released before the end of transaction\n"); | |
399 | return; | |
400 | } | |
401 | ||
d80ee38c MS |
402 | src_vb = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
403 | dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); | |
404 | ||
96d8eab5 PO |
405 | curr_ctx->num_processed++; |
406 | ||
d80ee38c MS |
407 | spin_lock_irqsave(&m2mtest_dev->irqlock, flags); |
408 | v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE); | |
409 | v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE); | |
410 | spin_unlock_irqrestore(&m2mtest_dev->irqlock, flags); | |
411 | ||
96d8eab5 PO |
412 | if (curr_ctx->num_processed == curr_ctx->translen |
413 | || curr_ctx->aborting) { | |
414 | dprintk(curr_ctx->dev, "Finishing transaction\n"); | |
415 | curr_ctx->num_processed = 0; | |
96d8eab5 PO |
416 | v4l2_m2m_job_finish(m2mtest_dev->m2m_dev, curr_ctx->m2m_ctx); |
417 | } else { | |
96d8eab5 PO |
418 | device_run(curr_ctx); |
419 | } | |
420 | } | |
421 | ||
96d8eab5 PO |
422 | /* |
423 | * video ioctls | |
424 | */ | |
425 | static int vidioc_querycap(struct file *file, void *priv, | |
426 | struct v4l2_capability *cap) | |
427 | { | |
428 | strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1); | |
429 | strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1); | |
430 | cap->bus_info[0] = 0; | |
96d8eab5 PO |
431 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
432 | | V4L2_CAP_STREAMING; | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
437 | static int enum_fmt(struct v4l2_fmtdesc *f, u32 type) | |
438 | { | |
439 | int i, num; | |
440 | struct m2mtest_fmt *fmt; | |
441 | ||
442 | num = 0; | |
443 | ||
444 | for (i = 0; i < NUM_FORMATS; ++i) { | |
445 | if (formats[i].types & type) { | |
446 | /* index-th format of type type found ? */ | |
447 | if (num == f->index) | |
448 | break; | |
449 | /* Correct type but haven't reached our index yet, | |
450 | * just increment per-type index */ | |
451 | ++num; | |
452 | } | |
453 | } | |
454 | ||
455 | if (i < NUM_FORMATS) { | |
456 | /* Format found */ | |
457 | fmt = &formats[i]; | |
458 | strncpy(f->description, fmt->name, sizeof(f->description) - 1); | |
459 | f->pixelformat = fmt->fourcc; | |
460 | return 0; | |
461 | } | |
462 | ||
463 | /* Format not found */ | |
464 | return -EINVAL; | |
465 | } | |
466 | ||
467 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, | |
468 | struct v4l2_fmtdesc *f) | |
469 | { | |
470 | return enum_fmt(f, MEM2MEM_CAPTURE); | |
471 | } | |
472 | ||
473 | static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, | |
474 | struct v4l2_fmtdesc *f) | |
475 | { | |
476 | return enum_fmt(f, MEM2MEM_OUTPUT); | |
477 | } | |
478 | ||
479 | static int vidioc_g_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
480 | { | |
d80ee38c | 481 | struct vb2_queue *vq; |
96d8eab5 PO |
482 | struct m2mtest_q_data *q_data; |
483 | ||
484 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
485 | if (!vq) | |
486 | return -EINVAL; | |
487 | ||
9f4161a6 | 488 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
489 | |
490 | f->fmt.pix.width = q_data->width; | |
491 | f->fmt.pix.height = q_data->height; | |
d80ee38c | 492 | f->fmt.pix.field = V4L2_FIELD_NONE; |
96d8eab5 PO |
493 | f->fmt.pix.pixelformat = q_data->fmt->fourcc; |
494 | f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3; | |
495 | f->fmt.pix.sizeimage = q_data->sizeimage; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | static int vidioc_g_fmt_vid_out(struct file *file, void *priv, | |
501 | struct v4l2_format *f) | |
502 | { | |
d3dd59c2 | 503 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
504 | } |
505 | ||
506 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, | |
507 | struct v4l2_format *f) | |
508 | { | |
d3dd59c2 | 509 | return vidioc_g_fmt(file2ctx(file), f); |
96d8eab5 PO |
510 | } |
511 | ||
512 | static int vidioc_try_fmt(struct v4l2_format *f, struct m2mtest_fmt *fmt) | |
513 | { | |
514 | enum v4l2_field field; | |
515 | ||
516 | field = f->fmt.pix.field; | |
517 | ||
518 | if (field == V4L2_FIELD_ANY) | |
519 | field = V4L2_FIELD_NONE; | |
520 | else if (V4L2_FIELD_NONE != field) | |
521 | return -EINVAL; | |
522 | ||
523 | /* V4L2 specification suggests the driver corrects the format struct | |
524 | * if any of the dimensions is unsupported */ | |
525 | f->fmt.pix.field = field; | |
526 | ||
527 | if (f->fmt.pix.height < MIN_H) | |
528 | f->fmt.pix.height = MIN_H; | |
529 | else if (f->fmt.pix.height > MAX_H) | |
530 | f->fmt.pix.height = MAX_H; | |
531 | ||
532 | if (f->fmt.pix.width < MIN_W) | |
533 | f->fmt.pix.width = MIN_W; | |
534 | else if (f->fmt.pix.width > MAX_W) | |
535 | f->fmt.pix.width = MAX_W; | |
536 | ||
537 | f->fmt.pix.width &= ~DIM_ALIGN_MASK; | |
538 | f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; | |
539 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, | |
545 | struct v4l2_format *f) | |
546 | { | |
547 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 548 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
549 | |
550 | fmt = find_format(f); | |
551 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { | |
552 | v4l2_err(&ctx->dev->v4l2_dev, | |
553 | "Fourcc format (0x%08x) invalid.\n", | |
554 | f->fmt.pix.pixelformat); | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
558 | return vidioc_try_fmt(f, fmt); | |
559 | } | |
560 | ||
561 | static int vidioc_try_fmt_vid_out(struct file *file, void *priv, | |
562 | struct v4l2_format *f) | |
563 | { | |
564 | struct m2mtest_fmt *fmt; | |
d3dd59c2 | 565 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
566 | |
567 | fmt = find_format(f); | |
568 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { | |
569 | v4l2_err(&ctx->dev->v4l2_dev, | |
570 | "Fourcc format (0x%08x) invalid.\n", | |
571 | f->fmt.pix.pixelformat); | |
572 | return -EINVAL; | |
573 | } | |
574 | ||
575 | return vidioc_try_fmt(f, fmt); | |
576 | } | |
577 | ||
578 | static int vidioc_s_fmt(struct m2mtest_ctx *ctx, struct v4l2_format *f) | |
579 | { | |
580 | struct m2mtest_q_data *q_data; | |
d80ee38c | 581 | struct vb2_queue *vq; |
96d8eab5 PO |
582 | |
583 | vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); | |
584 | if (!vq) | |
585 | return -EINVAL; | |
586 | ||
9f4161a6 | 587 | q_data = get_q_data(ctx, f->type); |
96d8eab5 PO |
588 | if (!q_data) |
589 | return -EINVAL; | |
590 | ||
d80ee38c | 591 | if (vb2_is_busy(vq)) { |
96d8eab5 | 592 | v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); |
07e80305 | 593 | return -EBUSY; |
96d8eab5 PO |
594 | } |
595 | ||
596 | q_data->fmt = find_format(f); | |
597 | q_data->width = f->fmt.pix.width; | |
598 | q_data->height = f->fmt.pix.height; | |
599 | q_data->sizeimage = q_data->width * q_data->height | |
600 | * q_data->fmt->depth >> 3; | |
96d8eab5 PO |
601 | |
602 | dprintk(ctx->dev, | |
603 | "Setting format for type %d, wxh: %dx%d, fmt: %d\n", | |
604 | f->type, q_data->width, q_data->height, q_data->fmt->fourcc); | |
605 | ||
07e80305 | 606 | return 0; |
96d8eab5 PO |
607 | } |
608 | ||
609 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, | |
610 | struct v4l2_format *f) | |
611 | { | |
612 | int ret; | |
613 | ||
614 | ret = vidioc_try_fmt_vid_cap(file, priv, f); | |
615 | if (ret) | |
616 | return ret; | |
617 | ||
d3dd59c2 | 618 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
619 | } |
620 | ||
621 | static int vidioc_s_fmt_vid_out(struct file *file, void *priv, | |
622 | struct v4l2_format *f) | |
623 | { | |
624 | int ret; | |
625 | ||
626 | ret = vidioc_try_fmt_vid_out(file, priv, f); | |
627 | if (ret) | |
628 | return ret; | |
629 | ||
d3dd59c2 | 630 | return vidioc_s_fmt(file2ctx(file), f); |
96d8eab5 PO |
631 | } |
632 | ||
633 | static int vidioc_reqbufs(struct file *file, void *priv, | |
634 | struct v4l2_requestbuffers *reqbufs) | |
635 | { | |
d3dd59c2 | 636 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
637 | |
638 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); | |
639 | } | |
640 | ||
641 | static int vidioc_querybuf(struct file *file, void *priv, | |
642 | struct v4l2_buffer *buf) | |
643 | { | |
d3dd59c2 | 644 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
645 | |
646 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); | |
647 | } | |
648 | ||
649 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
650 | { | |
d3dd59c2 | 651 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
652 | |
653 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); | |
654 | } | |
655 | ||
656 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) | |
657 | { | |
d3dd59c2 | 658 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
659 | |
660 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); | |
661 | } | |
662 | ||
663 | static int vidioc_streamon(struct file *file, void *priv, | |
664 | enum v4l2_buf_type type) | |
665 | { | |
d3dd59c2 | 666 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
667 | |
668 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); | |
669 | } | |
670 | ||
671 | static int vidioc_streamoff(struct file *file, void *priv, | |
672 | enum v4l2_buf_type type) | |
673 | { | |
d3dd59c2 | 674 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
675 | |
676 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); | |
677 | } | |
678 | ||
d3dd59c2 | 679 | static int m2mtest_s_ctrl(struct v4l2_ctrl *ctrl) |
96d8eab5 | 680 | { |
d3dd59c2 HV |
681 | struct m2mtest_ctx *ctx = |
682 | container_of(ctrl->handler, struct m2mtest_ctx, hdl); | |
96d8eab5 PO |
683 | |
684 | switch (ctrl->id) { | |
80072871 | 685 | case V4L2_CID_HFLIP: |
d3dd59c2 | 686 | if (ctrl->val) |
80072871 TM |
687 | ctx->mode |= MEM2MEM_HFLIP; |
688 | else | |
689 | ctx->mode &= ~MEM2MEM_HFLIP; | |
690 | break; | |
691 | ||
692 | case V4L2_CID_VFLIP: | |
d3dd59c2 | 693 | if (ctrl->val) |
80072871 TM |
694 | ctx->mode |= MEM2MEM_VFLIP; |
695 | else | |
696 | ctx->mode &= ~MEM2MEM_VFLIP; | |
697 | break; | |
698 | ||
96d8eab5 | 699 | case V4L2_CID_TRANS_TIME_MSEC: |
d3dd59c2 | 700 | ctx->transtime = ctrl->val; |
96d8eab5 PO |
701 | break; |
702 | ||
703 | case V4L2_CID_TRANS_NUM_BUFS: | |
d3dd59c2 | 704 | ctx->translen = ctrl->val; |
96d8eab5 PO |
705 | break; |
706 | ||
707 | default: | |
708 | v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n"); | |
709 | return -EINVAL; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
d3dd59c2 HV |
715 | static const struct v4l2_ctrl_ops m2mtest_ctrl_ops = { |
716 | .s_ctrl = m2mtest_s_ctrl, | |
717 | }; | |
718 | ||
96d8eab5 PO |
719 | |
720 | static const struct v4l2_ioctl_ops m2mtest_ioctl_ops = { | |
721 | .vidioc_querycap = vidioc_querycap, | |
722 | ||
723 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, | |
724 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
725 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
726 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
727 | ||
728 | .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, | |
729 | .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, | |
730 | .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, | |
731 | .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, | |
732 | ||
733 | .vidioc_reqbufs = vidioc_reqbufs, | |
734 | .vidioc_querybuf = vidioc_querybuf, | |
735 | ||
736 | .vidioc_qbuf = vidioc_qbuf, | |
737 | .vidioc_dqbuf = vidioc_dqbuf, | |
738 | ||
739 | .vidioc_streamon = vidioc_streamon, | |
740 | .vidioc_streamoff = vidioc_streamoff, | |
96d8eab5 PO |
741 | }; |
742 | ||
743 | ||
744 | /* | |
745 | * Queue operations | |
746 | */ | |
747 | ||
fc714e70 GL |
748 | static int m2mtest_queue_setup(struct vb2_queue *vq, |
749 | const struct v4l2_format *fmt, | |
750 | unsigned int *nbuffers, unsigned int *nplanes, | |
751 | unsigned int sizes[], void *alloc_ctxs[]) | |
96d8eab5 | 752 | { |
d80ee38c | 753 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vq); |
96d8eab5 | 754 | struct m2mtest_q_data *q_data; |
d80ee38c | 755 | unsigned int size, count = *nbuffers; |
96d8eab5 | 756 | |
9f4161a6 | 757 | q_data = get_q_data(ctx, vq->type); |
96d8eab5 | 758 | |
d80ee38c MS |
759 | size = q_data->width * q_data->height * q_data->fmt->depth >> 3; |
760 | ||
761 | while (size * count > MEM2MEM_VID_MEM_LIMIT) | |
762 | (count)--; | |
96d8eab5 | 763 | |
d80ee38c MS |
764 | *nplanes = 1; |
765 | *nbuffers = count; | |
766 | sizes[0] = size; | |
96d8eab5 | 767 | |
d80ee38c MS |
768 | /* |
769 | * videobuf2-vmalloc allocator is context-less so no need to set | |
770 | * alloc_ctxs array. | |
771 | */ | |
96d8eab5 | 772 | |
d80ee38c | 773 | dprintk(ctx->dev, "get %d buffer(s) of size %d each.\n", count, size); |
96d8eab5 PO |
774 | |
775 | return 0; | |
776 | } | |
777 | ||
d80ee38c | 778 | static int m2mtest_buf_prepare(struct vb2_buffer *vb) |
96d8eab5 | 779 | { |
d80ee38c | 780 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
96d8eab5 | 781 | struct m2mtest_q_data *q_data; |
96d8eab5 | 782 | |
d80ee38c | 783 | dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); |
96d8eab5 | 784 | |
9f4161a6 | 785 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
96d8eab5 | 786 | |
d80ee38c MS |
787 | if (vb2_plane_size(vb, 0) < q_data->sizeimage) { |
788 | dprintk(ctx->dev, "%s data will not fit into plane (%lu < %lu)\n", | |
789 | __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); | |
96d8eab5 PO |
790 | return -EINVAL; |
791 | } | |
792 | ||
d80ee38c | 793 | vb2_set_plane_payload(vb, 0, q_data->sizeimage); |
96d8eab5 PO |
794 | |
795 | return 0; | |
96d8eab5 PO |
796 | } |
797 | ||
d80ee38c | 798 | static void m2mtest_buf_queue(struct vb2_buffer *vb) |
96d8eab5 | 799 | { |
d80ee38c MS |
800 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
801 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); | |
96d8eab5 PO |
802 | } |
803 | ||
0f910bf0 MO |
804 | static void m2mtest_wait_prepare(struct vb2_queue *q) |
805 | { | |
806 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
807 | m2mtest_unlock(ctx); | |
808 | } | |
809 | ||
810 | static void m2mtest_wait_finish(struct vb2_queue *q) | |
811 | { | |
812 | struct m2mtest_ctx *ctx = vb2_get_drv_priv(q); | |
813 | m2mtest_lock(ctx); | |
814 | } | |
815 | ||
d80ee38c MS |
816 | static struct vb2_ops m2mtest_qops = { |
817 | .queue_setup = m2mtest_queue_setup, | |
818 | .buf_prepare = m2mtest_buf_prepare, | |
819 | .buf_queue = m2mtest_buf_queue, | |
0f910bf0 MO |
820 | .wait_prepare = m2mtest_wait_prepare, |
821 | .wait_finish = m2mtest_wait_finish, | |
96d8eab5 PO |
822 | }; |
823 | ||
d80ee38c | 824 | static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) |
96d8eab5 PO |
825 | { |
826 | struct m2mtest_ctx *ctx = priv; | |
d80ee38c | 827 | int ret; |
96d8eab5 | 828 | |
d80ee38c MS |
829 | memset(src_vq, 0, sizeof(*src_vq)); |
830 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
831 | src_vq->io_modes = VB2_MMAP; | |
832 | src_vq->drv_priv = ctx; | |
833 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
834 | src_vq->ops = &m2mtest_qops; | |
835 | src_vq->mem_ops = &vb2_vmalloc_memops; | |
836 | ||
837 | ret = vb2_queue_init(src_vq); | |
838 | if (ret) | |
839 | return ret; | |
96d8eab5 | 840 | |
d80ee38c MS |
841 | memset(dst_vq, 0, sizeof(*dst_vq)); |
842 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
843 | dst_vq->io_modes = VB2_MMAP; | |
844 | dst_vq->drv_priv = ctx; | |
845 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); | |
846 | dst_vq->ops = &m2mtest_qops; | |
847 | dst_vq->mem_ops = &vb2_vmalloc_memops; | |
848 | ||
849 | return vb2_queue_init(dst_vq); | |
850 | } | |
96d8eab5 | 851 | |
d3dd59c2 HV |
852 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_time_msec = { |
853 | .ops = &m2mtest_ctrl_ops, | |
854 | .id = V4L2_CID_TRANS_TIME_MSEC, | |
855 | .name = "Transaction Time (msec)", | |
856 | .type = V4L2_CTRL_TYPE_INTEGER, | |
857 | .def = 1001, | |
858 | .min = 1, | |
859 | .max = 10001, | |
860 | .step = 100, | |
861 | }; | |
862 | ||
863 | static const struct v4l2_ctrl_config m2mtest_ctrl_trans_num_bufs = { | |
864 | .ops = &m2mtest_ctrl_ops, | |
865 | .id = V4L2_CID_TRANS_NUM_BUFS, | |
866 | .name = "Buffers Per Transaction", | |
867 | .type = V4L2_CTRL_TYPE_INTEGER, | |
868 | .def = 1, | |
869 | .min = 1, | |
870 | .max = MEM2MEM_DEF_NUM_BUFS, | |
871 | .step = 1, | |
872 | }; | |
873 | ||
96d8eab5 PO |
874 | /* |
875 | * File operations | |
876 | */ | |
877 | static int m2mtest_open(struct file *file) | |
878 | { | |
879 | struct m2mtest_dev *dev = video_drvdata(file); | |
880 | struct m2mtest_ctx *ctx = NULL; | |
d3dd59c2 | 881 | struct v4l2_ctrl_handler *hdl; |
96d8eab5 PO |
882 | |
883 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); | |
884 | if (!ctx) | |
885 | return -ENOMEM; | |
886 | ||
d3dd59c2 HV |
887 | v4l2_fh_init(&ctx->fh, video_devdata(file)); |
888 | file->private_data = &ctx->fh; | |
96d8eab5 | 889 | ctx->dev = dev; |
d3dd59c2 HV |
890 | hdl = &ctx->hdl; |
891 | v4l2_ctrl_handler_init(hdl, 4); | |
892 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); | |
893 | v4l2_ctrl_new_std(hdl, &m2mtest_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); | |
894 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_time_msec, NULL); | |
895 | v4l2_ctrl_new_custom(hdl, &m2mtest_ctrl_trans_num_bufs, NULL); | |
896 | if (hdl->error) { | |
897 | int err = hdl->error; | |
898 | ||
899 | v4l2_ctrl_handler_free(hdl); | |
900 | return err; | |
901 | } | |
902 | ctx->fh.ctrl_handler = hdl; | |
903 | v4l2_ctrl_handler_setup(hdl); | |
96d8eab5 | 904 | |
9f4161a6 TM |
905 | ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0]; |
906 | ctx->q_data[V4L2_M2M_DST].fmt = &formats[0]; | |
907 | ||
d80ee38c MS |
908 | ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init); |
909 | ||
96d8eab5 | 910 | if (IS_ERR(ctx->m2m_ctx)) { |
16ee9bb1 DC |
911 | int ret = PTR_ERR(ctx->m2m_ctx); |
912 | ||
d3dd59c2 | 913 | v4l2_ctrl_handler_free(hdl); |
96d8eab5 | 914 | kfree(ctx); |
16ee9bb1 | 915 | return ret; |
96d8eab5 PO |
916 | } |
917 | ||
d3dd59c2 | 918 | v4l2_fh_add(&ctx->fh); |
96d8eab5 PO |
919 | atomic_inc(&dev->num_inst); |
920 | ||
921 | dprintk(dev, "Created instance %p, m2m_ctx: %p\n", ctx, ctx->m2m_ctx); | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
926 | static int m2mtest_release(struct file *file) | |
927 | { | |
928 | struct m2mtest_dev *dev = video_drvdata(file); | |
d3dd59c2 | 929 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
930 | |
931 | dprintk(dev, "Releasing instance %p\n", ctx); | |
932 | ||
d3dd59c2 HV |
933 | v4l2_fh_del(&ctx->fh); |
934 | v4l2_fh_exit(&ctx->fh); | |
935 | v4l2_ctrl_handler_free(&ctx->hdl); | |
96d8eab5 PO |
936 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
937 | kfree(ctx); | |
938 | ||
939 | atomic_dec(&dev->num_inst); | |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
944 | static unsigned int m2mtest_poll(struct file *file, | |
945 | struct poll_table_struct *wait) | |
946 | { | |
d3dd59c2 | 947 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
948 | |
949 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); | |
950 | } | |
951 | ||
952 | static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma) | |
953 | { | |
d3dd59c2 | 954 | struct m2mtest_ctx *ctx = file2ctx(file); |
96d8eab5 PO |
955 | |
956 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); | |
957 | } | |
958 | ||
959 | static const struct v4l2_file_operations m2mtest_fops = { | |
960 | .owner = THIS_MODULE, | |
961 | .open = m2mtest_open, | |
962 | .release = m2mtest_release, | |
963 | .poll = m2mtest_poll, | |
07e80305 | 964 | .unlocked_ioctl = video_ioctl2, |
96d8eab5 PO |
965 | .mmap = m2mtest_mmap, |
966 | }; | |
967 | ||
968 | static struct video_device m2mtest_videodev = { | |
969 | .name = MEM2MEM_NAME, | |
970 | .fops = &m2mtest_fops, | |
971 | .ioctl_ops = &m2mtest_ioctl_ops, | |
972 | .minor = -1, | |
973 | .release = video_device_release, | |
974 | }; | |
975 | ||
976 | static struct v4l2_m2m_ops m2m_ops = { | |
977 | .device_run = device_run, | |
978 | .job_ready = job_ready, | |
979 | .job_abort = job_abort, | |
d80ee38c MS |
980 | .lock = m2mtest_lock, |
981 | .unlock = m2mtest_unlock, | |
96d8eab5 PO |
982 | }; |
983 | ||
984 | static int m2mtest_probe(struct platform_device *pdev) | |
985 | { | |
986 | struct m2mtest_dev *dev; | |
987 | struct video_device *vfd; | |
988 | int ret; | |
989 | ||
990 | dev = kzalloc(sizeof *dev, GFP_KERNEL); | |
991 | if (!dev) | |
992 | return -ENOMEM; | |
993 | ||
994 | spin_lock_init(&dev->irqlock); | |
995 | ||
996 | ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); | |
997 | if (ret) | |
998 | goto free_dev; | |
999 | ||
1000 | atomic_set(&dev->num_inst, 0); | |
1001 | mutex_init(&dev->dev_mutex); | |
1002 | ||
1003 | vfd = video_device_alloc(); | |
1004 | if (!vfd) { | |
1005 | v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); | |
1006 | ret = -ENOMEM; | |
1007 | goto unreg_dev; | |
1008 | } | |
1009 | ||
1010 | *vfd = m2mtest_videodev; | |
5126f259 HV |
1011 | /* Locking in file operations other than ioctl should be done |
1012 | by the driver, not the V4L2 core. | |
1013 | This driver needs auditing so that this flag can be removed. */ | |
1014 | set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); | |
07e80305 | 1015 | vfd->lock = &dev->dev_mutex; |
96d8eab5 PO |
1016 | |
1017 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); | |
1018 | if (ret) { | |
1019 | v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); | |
1020 | goto rel_vdev; | |
1021 | } | |
1022 | ||
1023 | video_set_drvdata(vfd, dev); | |
1024 | snprintf(vfd->name, sizeof(vfd->name), "%s", m2mtest_videodev.name); | |
1025 | dev->vfd = vfd; | |
1026 | v4l2_info(&dev->v4l2_dev, MEM2MEM_TEST_MODULE_NAME | |
1027 | "Device registered as /dev/video%d\n", vfd->num); | |
1028 | ||
1029 | setup_timer(&dev->timer, device_isr, (long)dev); | |
1030 | platform_set_drvdata(pdev, dev); | |
1031 | ||
1032 | dev->m2m_dev = v4l2_m2m_init(&m2m_ops); | |
1033 | if (IS_ERR(dev->m2m_dev)) { | |
1034 | v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); | |
1035 | ret = PTR_ERR(dev->m2m_dev); | |
1036 | goto err_m2m; | |
1037 | } | |
1038 | ||
1039 | return 0; | |
1040 | ||
d80ee38c | 1041 | v4l2_m2m_release(dev->m2m_dev); |
96d8eab5 PO |
1042 | err_m2m: |
1043 | video_unregister_device(dev->vfd); | |
1044 | rel_vdev: | |
1045 | video_device_release(vfd); | |
1046 | unreg_dev: | |
1047 | v4l2_device_unregister(&dev->v4l2_dev); | |
1048 | free_dev: | |
1049 | kfree(dev); | |
1050 | ||
1051 | return ret; | |
1052 | } | |
1053 | ||
1054 | static int m2mtest_remove(struct platform_device *pdev) | |
1055 | { | |
1056 | struct m2mtest_dev *dev = | |
1057 | (struct m2mtest_dev *)platform_get_drvdata(pdev); | |
1058 | ||
1059 | v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_TEST_MODULE_NAME); | |
1060 | v4l2_m2m_release(dev->m2m_dev); | |
1061 | del_timer_sync(&dev->timer); | |
1062 | video_unregister_device(dev->vfd); | |
1063 | v4l2_device_unregister(&dev->v4l2_dev); | |
1064 | kfree(dev); | |
1065 | ||
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static struct platform_driver m2mtest_pdrv = { | |
1070 | .probe = m2mtest_probe, | |
1071 | .remove = m2mtest_remove, | |
1072 | .driver = { | |
1073 | .name = MEM2MEM_NAME, | |
1074 | .owner = THIS_MODULE, | |
1075 | }, | |
1076 | }; | |
1077 | ||
1078 | static void __exit m2mtest_exit(void) | |
1079 | { | |
1080 | platform_driver_unregister(&m2mtest_pdrv); | |
1081 | platform_device_unregister(&m2mtest_pdev); | |
1082 | } | |
1083 | ||
1084 | static int __init m2mtest_init(void) | |
1085 | { | |
1086 | int ret; | |
1087 | ||
1088 | ret = platform_device_register(&m2mtest_pdev); | |
1089 | if (ret) | |
1090 | return ret; | |
1091 | ||
1092 | ret = platform_driver_register(&m2mtest_pdrv); | |
1093 | if (ret) | |
1094 | platform_device_unregister(&m2mtest_pdev); | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | module_init(m2mtest_init); | |
1100 | module_exit(m2mtest_exit); | |
1101 |